• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The honing tool comprises a base casing (10) and a slide block (20) carrying a honing tip (23a). The base casing has a through hole (11) concentric to an axial axis (A) through which a guide rod (21) of the sliding block is inserted with an elastic device (30) around it. The sliding block is secured with a polygonal nut (40) that establishes a precompression to the elastic device. The honing tool further comprises an anti-rotation device that prevents a relative rotation of the sliding block with respect to the base casing and a locking device that prevents the rotation of the nut with respect to the sliding block. (Machine-translation by Google Translate, not legally binding)
    公开号:ES2832525A1
    申请号:ES201931092
    申请日:2019-12-10
    公开日:2021-06-10
    发明作者:Salvador Jordi Adalbert Marques；Rodriguez Jose Antonio Travieso；Fuentes Jordi Llumà；Mesa Ramón Jerez
    申请人:Universitat Politecnica de Catalunya UPC；Fundacio Universitaria Balmes；
    IPC主号:
    专利说明:

    [0004] Technique field
    [0006] The present invention concerns a tool, usable in a machine tool to provide a burnished finish by plastic deformation to machined metal parts.
    [0008] State of the art
    [0009] Honing tools are widely known in the industry and are used to produce a finish on metal parts by plastic deformation of their surface roughness, and act by applying pressure by means of a ball, roller or rounded honing point that is moved over the surface to be finished. .
    [0011] Honing tools typically consist of a base casing, attached to a support such as a gripping member of a machine tool that allows its movement to be guided precisely, and comprise a sliding block provided with the honing element supported and guided by said base casing. Typically between the base housing and the slide block a retainer is included which holds the slide block attached to the base housing, allowing relative movement in a linear direction. Between the sliding block and the base casing, a compressed elastic device is also usually included which applies an elastic tension to separate both bodies in a linear direction, said elastic device being retained in a compressed position thanks to said retainer.
    [0013] For example, document DE102012223474A1 describes a honing tool of this type, in which the base casing includes a conduit inside which a part of the sliding block is housed, which can be guided inside it, but without the possibility of turning. from the remainder of the slide block, which includes a honing tip, protruding from one end of the base housing. The opposite end of the conduit from the base housing includes a threaded plug, the insertion level of which within the base housing can be precisely adjusted by said thread. The conduit constituted by the base casing also integrates inside the elastic device, compressed between the sliding block and the threaded plug.
    [0014] In this embodiment, the retainer that connects the sliding block with the base casing, allowing its movement in a linear direction, but preventing its rotation, is a perpendicular projection of the sliding block, which passes through an elongated slot provided in the base casing. Said elongated slot defines the path of the sliding block and also prevents the rotation of the sliding block within the base housing.
    [0016] This solution, however, complicates the obtaining of the sliding block by providing it with the aforementioned perpendicular projections.
    [0018] DE102012223474A1 does not contemplate that the base casing has a cylindrical outer surface dimensioned to be gripped by a collet chuck of a head of a machine tool capable of imparting to the collet collet a rotation around the axial geometric axis (A) in order to avoid a uneven burnishing tip wear.
    [0020] This document also does not contemplate that the honing tip can be replaced without requiring the removal of the entire slide block. The removal and replacement of the sliding block would force the tension of the elastic device to re-calibrate, which makes this operation more difficult and more expensive.
    [0022] The invention proposes an alternative structure of the honing tool, which offers both robustness and performance advantages and which generally has a removable and interchangeable honing tip.
    [0024] Brief description of the invention
    [0026] The present invention concerns a honing tool that comprises, in a way known per se in the state of the art, for example, according to document DE102012223474A1:
    [0028] - a base casing with an axial passage concentric to an axial axis (A),
    [0030] - a sliding block with the possibility of axial sliding, having a central or intermediate portion inserted through said axial passage of the base casing and a honing portion that integrates a honing point, said central and honing portions being aligned with the axial geometric axis (A);
    [0032] - a limiting device configured to limit the axial sliding travel of the sliding block with respect to the base casing;
    [0033] - a tubular elastic device that applies an elastic force on the sliding block in the direction of the axial geometric axis (A);
    [0035] - a regulation device configured to establish a selected degree of precompression to the tubular elastic device; Y
    [0037] - an anti-rotation device configured to prevent a rotation of the sliding block with respect to the base casing about the axial geometric axis (A).
    [0039] Unlike the structure of the tool of the state of the art, the tool of this invention is defined by the combination of the following characteristics:
    [0041] the limiting device and the regulating device both include:
    [0043] - a transverse wall arranged in the axial passage of the base casing and provided with a central through hole;
    [0045] - a guide rod of the slide block including a threaded portion, said guide rod being aligned with the axial axis (A) and inserted through said through hole of the transverse wall; Y
    [0047] - a polygonal nut screwed to the threaded portion of the guide rod, said nut being arranged on one side of the transverse wall, said polygonal nut having a polygonal outer perimeter larger than the through hole
    [0049] and the anti-rotation device comprises:
    [0051] - at least one anti-rotation wall provided with at least one locking surface parallel to the axial geometric axis (A), facing and adjacent to at least part of the polygonal outer perimeter of the polygonal nut and configured to prevent the relative rotation of the polygonal nut, allowing its relative displacement in the direction of the axial geometric axis (A), said anti-rotation wall being connected to the base casing, and
    [0053] - a locking device that connects the polygon nut with the guide rod, preventing its relative rotation,
    [0055] Thus, the polygonal nut in cooperation with the transverse wall constitutes both the limiting device and the regulating device, and the polygonal nut in cooperation with the anti-rotation wall and the locking device constitutes the anti-rotation device.
    [0056] Preferably, the base housing has a cylindrical outer surface dimensioned to be gripped by a conventional collet chuck, for example 32 millimeters, of a machine tool head capable of imparting to the collet chuck and the honing tool a rotation about the axis. axial geometry, and the anti-rotation device ensures that the sliding block and honing tip rotate together with the base housing. In general, the rotation imparted by the machine tool is of very low speed, for example, 1 to 20 revolutions per minute, and is intended to ensure uniform wear of the honing tip and the lateral surfaces adjacent to said tip.
    [0058] In one embodiment, the honing tip is interchangeable and is attached to the slide block by a removable threaded joint. In another embodiment, the honing tip is interchangeable and is attached to the slide block by a tight fit by thermal expansion and contraction. To facilitate the gripping of the interchangeable honing tip, it preferably includes, on opposite sides thereof symmetrical with respect to the axial axis, two flat surfaces parallel to the axial geometric axis that constitute clamping surfaces.
    [0060] In one embodiment, the anti-rotation wall, which is at least one, is a circular or polygonal anti-rotation wall that defines a plurality of locking surfaces that surround the polygonal outer perimeter of the polygonal nut. Optionally, at least some of said locking surfaces are defined by grooves, preferably of semicircular cross-section, formed in an anti-rotation wall, parallel to the axial geometric axis, and located in radial positions coinciding with each one of the edges of the outer perimeter of the polygonal nut to house said edges of the outer perimeter. In another embodiment, the anti-rotation wall, which is at least one, are two anti-rotation walls located on opposite sides of the polygon nut, each with a locking surface. In either case, the polygonal outer perimeter of the polygon nut can be square, hexagonal, or octagonal.
    [0062] Preferably, the central portion of the base housing has a cylindrical perimeter and the base housing comprises, on a distal side of the transverse wall, at least one guide wall provided with at least one cylindrical inner guide surface parallel to the axial axis and facing and adjacent to at least part of the outer perimeter of the central portion of the sliding block, guiding its relative movement in the direction of the axial geometric axis.
    [0064] Preferably, the honing tool further comprises a locking device configured to prevent relative rotation of the polygon nut and the threaded portion of the block. sliding. For example, the locking device comprises a hole in the polygon nut, a hole in the threaded portion of the slide block aligned with the hole in the polygon nut, and a locking pin inserted into said hole in the polygon nut and into said hole. of the threaded portion. In one embodiment the hole in the polygon nut and the hole in the threaded portion are radial and perpendicular to the axial axis and the anti-rotation wall has a slot or recess elongated in an axial direction and facing the radial hole in the polygon nut to allow a access to it. In another embodiment, the hole in the polygon nut and the hole in the threaded portion are inclined relative to the axial axis and the hole in the polygon nut is accessible through a space between the anti-rotation walls.
    [0066] Brief description of the figures
    [0068] The foregoing and other characteristic advantages will be more fully understood from the following detailed description of an exemplary embodiment with reference to the attached drawings, which should be taken by way of illustration and not limitation, in which:
    [0070] Fig. 1 is a cross-sectional view of a honing tool in accordance with one embodiment of the present invention, taken along a plane containing an axial axis of the honing tool;
    [0072] Fig. 2 shows a cross-sectional exploded view of the honing tool;
    [0074] Figs. 3A, 3B and 3C show some embodiments of a rotation locking device of the honing tool.
    [0076] Detailed description of a realization example
    [0078] The attached figures show an exemplary embodiment with a non-limiting illustrative character of a honing tool according to the present invention.
    [0080] Fig. 1 represents an embodiment composed of a base casing 10, a sliding block 20 carrying a honing tip 23a, a tubular elastic device 30 and a polygonal nut 40.
    [0081] The base casing 10 has a cylindrical outer surface 63 and an axial passage 12, both concentric to an axial axis A. The cylindrical outer surface 63 has a diameter dimensioned to be gripped for example by a collet chuck of a machine tool head. . Advantageously, the head of the machine tool is of a type capable of imparting to the base casing 10 a rotation about the axial geometric axis A. The axial passage 12 can be made by machining in the central part of said base casing 10 in a direction parallel to the axial axis A. The base casing 10 further comprises a transverse wall 13 arranged in the axial passage 12 and provided with a central through hole 11.
    [0083] On a proximal side of the transverse wall 13, the base casing 10 has an anti-rotation wall 50 that generates in its intrados a locking surface 51 parallel to the axial axis A. This anti-rotation wall 50 can be obtained by machining a polygonal opening or a hole parallel to the axial axis A with a diameter greater than that of the through hole 11.
    [0084] On an opposite distal side of the transverse wall 13, the base housing 10 has a guide wall 60 which at its intrados generates a guide surface 61 parallel to the axial axis A. The guide surface 61 can be obtained with a cylindrical machining of a diameter greater than that of the through hole 11.
    [0086] The sliding block 20 has a concentric shape with respect to the axial axis A, which facilitates its machining by manual or automatic rotary cutting and machining tools, and comprises three differentiated portions aligned along the axial axis A: a guide rod 21, a central portion 22 and a honing portion 23.
    [0088] The honing portion 23 and the central portion 22 are cylindrical and have a cylindrical outer surface 26 with the same outer diameter sized to slideably fit with the guide surface 61 of the base housing 10 to allow their guidance and relative movement in the direction. of the axial geometric axis A.
    [0090] The guide rod 21 has a cylindrical shape with an outer diameter smaller than the through hole 11 to be able to be inserted through the same through hole 11 of the base casing 10, and said guide rod 21 comprises a threaded portion 21a in a further part to the honing portion 23. The threaded portion 21a and the central portion 22 are disposed on opposite sides of the transverse wall 13 of the base housing 10.
    [0091] The honing tip 23a is interchangeable, and for this the honing portion 23 of the sliding block 20 comprises a threaded hole 24 concentric to the axial axis A located at the end opposite the threaded portion 21a and the honing tip 23a has a lug threaded 25 concentric to the axial geometric axis A located in its proximal part. The threaded lug 25 of the honing tip 23a is threadedly coupled to the threaded hole 24 of the sliding block 20, constituting a removable joint that is easy to machine as it is drilled and threaded at the same end of the part in a direction parallel to the axis. axial geometric A.
    [0093] Alternatively, the joint between the honing tip 23a and the slide block 20 may be made by a tight fit by thermal expansion and contraction. Also alternatively, the honing tip 23a and the sliding block 20 may be made of the same single piece, although in this case the honing tip 23a would not be interchangeable. The central portion 22 has an outer diameter greater than that of the guide rod 21, thus making it possible to generate a bearing surface facing a surface of the transverse wall 13 of the base casing 10 that surrounds the through hole 11.
    [0095] The tubular elastic device 30 is constituted by a compression helical spring arranged around the guide rod 21 of the sliding block 20, between the mentioned bearing surface of the sliding block 20 and the transverse wall 10 of the base housing 10. Thus, the device Tubular elastic 30 has one end supported on the central portion 22 of the slide block 20 and another end supported on the distal side of the transverse wall 13 of the base housing 10.
    [0097] The guide rod 21 of the slide block 20 is inserted into the through hole 11 of the transverse wall 13, with the threaded portion 21a protruding from the proximal side of the transverse wall 13 of the base housing 10.
    [0099] Polygon nut 40 has a threaded hole 42 that is threaded to threaded portion 21a of slide block 20, and a polygonal outer perimeter 41 of a hexagonal shape larger than through hole 11, which prevents removal of threaded end 21a from the base casing 10 and retains the tubular elastic device 30 arranged between the base casing 10 and the sliding block 20.
    [0101] The polygonal nut 40 allows the adjustment of the set pressure of the tubular elastic device 30, in this case a helical spring, and as the polygonal nut is screwed on 40, the tubular elastic device 30 is compressed between the transverse wall 13 of the base casing 10 and the bearing surface of the central portion 22 of the sliding block 20 so that a pre-compression of the tubular elastic device 30 is established and a elastic force in the direction of the axial axis A.
    [0103] Once set to a suitable precompression to obtain a desired honing pressure, relative rotation between polygon nut 40 and threaded portion 21a must be prevented by a locking device 44 to prevent misadjustment. In the illustrated embodiment, the locking device 44 consists of a radial hole 45 perpendicular to the axial axis A formed in the polygon nut 40, a radial hole 47 perpendicular to the axial axis A formed in the threaded portion 21a of the slide block 20, and aligned with radial hole 45 of polygon nut 40, and a locking pin 46 inserted into radial hole 45 of polygon nut 40 and radial hole 47 of threaded portion 21a. In turn, the anti-rotation wall 50 has a slot 14 elongated in an axial direction and facing the radial hole 45 of the polygonal nut 40 to allow access thereto.
    [0105] Alternatively, the hole 45 of the polygon nut 40 and the hole 47 of the threaded portion 21a could be inclined with respect to the axial axis A so that the hole 45 of the polygon nut 40 would be accessible through a space between the walls. anti-rotation 50, which would avoid the need for the elongated slot 14 in the anti-rotation wall 50. Also alternatively, the locking device 44 could comprise a self-locking element of the conventional type included in the polygon nut 40.
    [0107] The polygonal nut 40 has a polygonal outer perimeter 41 with variable radii with respect to the center of the polygonal nut 40, which define areas of minimum radius and areas of maximum radius, where the areas of maximum radius coincide with perimeter edges. outside 43 of polygon nut 40.
    [0109] The honing tool further comprises an anti-rotation device configured to prevent a rotation of the sliding block 20 with respect to the base casing 10 about the axial geometric axis A. This anti-rotation device is constituted by a cooperation between the polygonal outer perimeter 41 of the polygonal nut 40 and locking surfaces 51 of the anti-rotation wall 50.
    [0111] Fig. 3A shows an embodiment of the locking device in which the anti-rotation wall 50 is formed with a side-to-side through slot that generates two locking surfaces 51 Parallel spaced apart by a distance slightly greater than two parallel faces of the polygonal outer perimeter 41 of the polygon nut 40.
    [0113] Fig. 3B shows another embodiment of the locking device in which the locking surfaces 51 comprise a concentric central hole with axial geometric axis A in the anti-rotation wall 50 with a distance radius between the minimum radius and the maximum radius of the perimeter polygonal exterior 41 of the polygonal nut 40, and vertical grooves 52 parallel to the axial geometric axis A and preferably semicircular in shape that define housings for the edges of the outer perimeter 43 of the polygonal nut 40, and that allow its introduction into the anti-rotation wall 50, preventing its rotation.
    [0115] Fig. 3C shows yet another embodiment of the locking device similar to that shown in Fig. 3b, with the difference that instead of a central hole the locking surfaces 51 comprise a polygonal recess complementary to the polygonal outer perimeter 41 of the nut polygonal 40. In this embodiment there are also vertical grooves 52 parallel to the axial geometric axis A and preferably semi-circular in shape located at the vertices of the polygonal pocket that are intended to facilitate the machining of the polygonal pocket.
    [0117] In this way, upon contact between the outer perimeter 43 of the polygonal nut 40 and the locking surfaces 51 of the base casing 10, the rotation of the polygon nut 40 with respect to the base casing 10 is prevented, allowing only movement in the direction of the axial axis A of the whole assembly of the sliding block 20 with the honing point 23a.
    [0118] The honing tip 23a has two flat surfaces 62 opposite and parallel to the axial geometric axis that constitute clamping surfaces that, using a manual or automatic tool, allow the honing tip 23a to be unscrewed and screwed in for replacement if necessary. This screwing and unscrewing of the honing tip 23a is ensured by the locking device 44 together with the anti-rotation device formed by the locking surfaces 51 that prevent the rotation of the entire assembly of the sliding block 20 and the honing tip 23a with respect to base housing 10.
    [0120] Furthermore, when the head of the machine tool that handles the honing tool is capable of imparting a turn to the collet chuck that grips the base casing 10, the anti-twist device in cooperation with the locking device ensures the transmission of the casing turn. base 10 to slide block 20 and honing tip 23a. This twist, which in general it is very low speed, such as 1 to 20 rpm, it is advantageous to ensure uniform wear of the honing tip 23a.
    [0122] It will be understood that the different parts that make up the invention described in one embodiment can be freely combined with the parts described in other different embodiments even though said combination has not been explicitly described, as long as there is no harm in the combination.
    权利要求:
    Claims (16)
    [1]
    1. Honing tool comprising:
    - a base casing (10) with an axial passage (12) concentric to an axial geometric axis (A),
    - a sliding block (20) with the possibility of axial sliding, which has a portion (22) inserted through said axial passage (12) of the base casing (10) and a honing portion (23) carrying a point of honing (23a), said portions (22, 23) being aligned with the axial geometric axis (A);
    - a limiting device configured to limit the axial sliding travel of the sliding block (20) with respect to the base casing (10);
    - a tubular elastic device (30) that applies an elastic force on the sliding block (20) in the direction of the axial geometric axis (A);
    - a regulation device configured to establish a selected degree of precompression to the tubular elastic device (30); Y
    - an anti-rotation device configured to prevent a rotation of the sliding block (20) with respect to the base casing (10) about the axial geometric axis (A);
    characterized by:
    the limiting device and the regulating device include:
    - a transverse wall (13) arranged in the axial passage (12) of the base casing (10) and provided with a central through hole (11);
    - a guide rod (21) of the sliding block (20) including a threaded portion (21a), said guide rod (21) being aligned with the axial geometric axis (A) and inserted through said through hole (11 ) of the transverse wall (13
    - a polygonal nut (40) screwed to the threaded portion (21a) arranged on one side of the transverse wall (13), said polygonal nut (40) having a polygonal outer perimeter (41) larger than the through hole (11 )
    and because the anti-rotation device comprises:
    - at least one anti-rotation wall (50), provided with at least one locking surface (51) parallel to the axial geometric axis (A), facing and adjacent to at least part of the polygonal outer perimeter (41) of the polygonal nut (40 ) and configured to prevent the relative rotation of the polygonal nut (40), allowing its relative movement in the direction of the axial geometric axis (A), said anti-rotation wall (50) being connected to the base casing (10),; Y
    - a locking device (44) that connects the polygonal nut (40) with the guide rod, preventing its relative rotation,
    [2]
    Honing tool according to claim 1, wherein the honing tip (23a) is connected to the sliding block (20) by means of a removable threaded joint.
    [3]
    Honing tool according to claim 1, wherein the honing tip (23a) is attached to the slide block (20) by a tight fit by thermal expansion and contraction.
    [4]
    A honing tool according to claim 1, wherein said at least one anti-rotation wall (50) is a circular or polygonal anti-rotation wall defining a plurality of locking surfaces (51) surrounding the outer polygonal perimeter (41) of the polygon nut (40).
    [5]
    Honing tool according to claim 4, wherein at least some of said locking surfaces (51) are defined by grooves (52) of the anti-rotation wall (50), parallel to the axial geometric axis (A), located in radial positions coinciding with each of some edges of the outer perimeter (43) of the polygonal nut (40) to house said edges of the outer perimeter (43).
    [6]
    Honing tool according to claim 1, wherein said at least one anti-rotation wall (50) is two anti-rotation walls (50) located on opposite sides of the polygon nut (40), each with a locking surface (51) .
    [7]
    Honing tool according to any one of claims 4 to 6, wherein the polygonal outer perimeter (41) of the polygonal nut (40) is square, hexagonal or octagonal.
    [8]
    Honing tool according to any one of the preceding claims, wherein the portion (22) of the base casing (20) has a cylindrical perimeter and the base casing (10) comprises, on the distal side of the transverse wall (13 ), at least one guide wall (60) provided with at least one inner cylindrical guide surface (61) parallel to the axial geometric axis (A) and facing and adjacent to at least part of the outer perimeter of the portion (22) of the sliding block (20), guiding its relative movement in the direction of the axial axis (A).
    [9]
    Honing tool according to any one of the preceding claims, further comprising a locking device (44) configured to prevent relative rotation of the polygon nut (40) and the threaded portion (21a) of the slide block (20).
    [10]
    Honing tool according to claim 9, wherein the locking device (44) comprises a hole (45) in the polygon nut (40), a hole (47) in the threaded portion (21a) of the sliding block (20 ) and aligned with the hole (45) of the polygon nut (40), and a locking pin (46) inserted in said hole (45) of the polygon nut (40) and in said hole (47) of the threaded portion (21a).
    [11]
    Honing tool according to claim 10, wherein the hole (45) of the polygonal nut (40) and the hole (47) of the threaded portion (21a) are radial and perpendicular to the axial axis (A) and the Anti-rotation wall (50) has a slot (14) or recess elongated in an axial direction and facing the radial hole (45) of the polygonal nut (40).
    [12]
    Honing tool according to claim 10, wherein the hole (45) of the polygonal nut (40) and the hole (47) of the threaded portion (21a) are inclined with respect to the axial axis (A) and the hole (45) of the polygonal nut (40) is accessible through a space existing between the anti-rotation walls (50).
    [13]
    Honing tool according to claim 9, wherein the locking device (44) comprises a self-locking element included in the polygonal nut (40).
    [14]
    Honing tool according to claim 2 or 3, wherein the honing tip (23a) includes, on opposite sides thereof symmetrical with respect to the axial geometric axis (A), two flat surfaces (62) parallel to the axial geometric axis (A) constituting clamping surfaces.
    [15]
    Honing tool according to any one of the preceding claims, wherein the base casing (10) has a cylindrical outer surface (63) dimensioned to be gripped by a collet chuck of a head of a machine tool capable of imparting to the collet drill chuck one turn around the axial geometric axis (A).
    [16]
    Honing tool according to any one of the preceding claims, wherein the tubular elastic device (30) has one end supported on the portion (22) of the sliding block (20) and another end supported on one side of the transverse wall ( 13) from the base casing (10).
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    同族专利:
    公开号 | 公开日
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    ES2832525B2|2021-10-18|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US20060144198A1|2005-01-05|2006-07-06|Sugino Machine Limited|Throw-away burnishing tool for outside diameter and for inside diameter|
    US20180021916A1|2016-07-19|2018-01-25|Actuant Corporation|Surface finishing assembly|
    KR20180038625A|2016-10-07|2018-04-17|김가은|Diamond Burnishing Tool|
    RU177001U1|2017-03-22|2018-02-06|федеральное государственное бюджетное образовательное учреждение высшего образования "Санкт-Петербургский горный университет"|DEVICE FOR CREATING PRELIMINARY LOCAL PLASTIC DEFORMATION|
    法律状态:
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    2021-10-18| FG2A| Definitive protection|Ref document number: 2832525 Country of ref document: ES Kind code of ref document: B2 Effective date: 20211018 |
    优先权:
    申请号 | 申请日 | 专利标题
    ES201931092A|ES2832525B2|2019-12-10|2019-12-10|INTERCHANGEABLE TIPS BURNISHING TOOL|ES201931092A| ES2832525B2|2019-12-10|2019-12-10|INTERCHANGEABLE TIPS BURNISHING TOOL|
    PCT/ES2020/070727| WO2021116508A1|2019-12-10|2020-11-23|Interchangeable-tip burnishing tool|
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