• 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 present invention relates to a machine tool for machining workpieces, comprising: a linear guide (2, 102) aligned in a predetermined direction (A, A '), wherein in said linear guide (2, 102) at least one upper surface portion is defined; and a slider (4, 104) adapted to slide on the linear guide (2, 102). The sliding device (4, 104) includes: at least one rolling element system (6) adapted to allow the sliding device (4, 104) to slide on the linear guide (2, 102); a shutter member (5 ", 105") extending along a substantially parallel direction to said predetermined direction (A, A ') and disposed so as to prevent, in use, dust and machining debris from entering at least one system with rolling elements (6) can get; and a scraper member (7, 107) extending along a substantially parallel direction to said predetermined direction (A, A '), wherein in the scraper member (7, 107) is defined at least one scraper surface arranged such that it brushes over the at least one top surface portion of the linear guide (2, 102) while the slider (4, 104) slides on the linear guide (2, 102) to, in use, remove dust and / or processing residues from the at least one top side Surface section of the linear guide (2, 102) to remove.
    公开号:AT519785A2
    申请号:T9/2018
    申请日:2018-01-09
    公开日:2018-10-15
    发明作者:
    申请人:Scm Group Spa；
    IPC主号:
    专利说明:

    The present invention relates to an improved machine tool.
    In particular, the invention relates to a machine tool which is also suitable for machining workpieces made of hard materials, such as aluminum, composite materials or plastic materials.
    There are various types of machine tools which, to facilitate relative movement between the workpiece to be machined and the tool, are provided with one or more guides on which one or more sliding shoes can slide.
    Usually the guides are integral with the
    Base frame of the machine tool running, while the shoes, possibly by means of additional organs, are connected to the processing tools or workpieces to be machined. Usually, these machine tools are the
    Provide material removal of the workpieces, also with
    Protective elements or organs equipped, such as seals, to prevent the dust generated by the processing of the workpieces can penetrate into existing between the shoe and the corresponding guide gaps.
    In fact, the penetration of more or less large dust grains in the space between the shoe and guide could lead to damage or even breakage of these two mechanical organs, and consequently to the blockage of the shoe.
    In particular, in the cases where the coupling between the shoe and the guide is of the ball or roller type, the possible presence of dust between the shoe and guide could block the balls (depending on the type) and breakage the holding organs, which hold the balls or rollers close to the sliding shoe fitting result.
    However, the protective devices and elements listed above, which are normally used on machines of the known type, do not fully perform the function for which they are intended, thereby causing malfunction or even breakage on the machines on which they are mounted.
    In view of this, it is therefore the object of this invention to provide a machine tool equipped with a sliding device which prevents the occurrence of malfunctions or breakage on the machine caused by the accumulation of dust and machining residues in the area affected by the sliding movement of the device caused.
    Another object of the invention is to provide a machine tool that is reliable in use.
    The subject of the present invention is therefore a machine tool for machining workpieces, which comprises: a linear guide aligned in a predetermined direction, wherein in this linear guide at least one upper-side surface section is defined; a sliding device adapted to slide on the linear guide; wherein the sliding device includes: at least one rolling element system configured to allow the sliding device to slide on the linear guide; a closure member extending along a substantially parallel direction to said predetermined direction and arranged to prevent, in use, dust and machining debris from entering the at least one rolling element system; and a scraper member extending along a substantially parallel direction to said predetermined direction, wherein in the scraper member is defined at least one scraper surface disposed so as to brush over the at least one upper surface portion of the linear guider while the slider is on the linear guide slides to, in use, dust and / or
    Remove machining residues from the at least one upper-side surface portion of the linear guide.
    Preferably, according to the invention, the at least one upper-side surface section of the linear guide and the at least one wiping surface of the wiper element are substantially planar.
    Furthermore, according to the invention, the stripping element can extend over the entire length of the sliding device.
    Also according to the invention, the closure element may be provided between the stripping element and the at least one system with rolling elements.
    Furthermore, according to the invention, the sliding device may include a bearing element that includes at least one system having rolling elements, and the wiping element may be detachably connected to the bearing element.
    Preferably, according to the invention consists of the stripping brass, bronze, rubber, polyurethane or plastic.
    Advantageously, the stripping element according to the invention may include a strip of material in which the at least one contact surface is formed; wherein this strip of material for example made of rubber, polyurethane, felt, plastic, brass or bronze.
    Furthermore, according to the invention, at least one bore can be formed on at least one end section of the wiping element which faces the linear guide and, in use, can be connected to a compressed air system in order to remove residual materials from the at least one bore, in use, by dispensing compressed air. which arise during machining of the workpieces which are located on the linear guide downstream and / or upstream of the sliding device.
    Also according to the invention, the at least one bore may include a plurality of bores made in a portion of the scraping member that is substantially "C" shaped.
    Advantageously, the at least one bore according to the invention may be inclined along a direction such that the compressed air emerging from the at least one bore strikes the linear guide in such a way that the residual materials resulting from the machining of the workpieces are removed.
    In the following, this invention is illustrated by way of illustration, but not limitation, in its preferred embodiments, with particular reference to the figures of the accompanying drawings. Show it:
    1 is a partial perspective view, viewed from a first viewpoint, of a group of a machine tool according to a first embodiment of the present invention;
    Fig. 2 is another partial perspective view, viewed from a second viewpoint, of the group shown in Fig. 1;
    Fig. 3 is a front view of the group of Figs. 1 and 2;
    Fig. 4 is a partially sectioned front view of the group shown in Figs. 1 to 3;
    Fig. 5 is a first perspective view of a component of the group of Figs. 1 to 4;
    Fig. 6 is a second perspective view of the component shown in Fig. 5;
    7 shows a first perspective partial view of a group of a machine tool according to a further embodiment of the present invention;
    Fig. 8 is a second partial perspective view of the group shown in Fig. 7;
    Fig. 9 is a front view of the group of Figs. 7 and 8; and
    FIG. 10 is a perspective view of a component of FIG
    Fig. 7 to 9 shown group.
    In the various figures, similar parts are identified by the same reference numerals.
    With particular reference to Figures 1 to 6, reference numeral 1 denotes a group of a machine tool in which a translational movement of the workpiece or tool to be machined relative to the stationary parts of the machine is provided.
    Said group 1 includes a guide 2, for example a rectilinear prism guide.
    Specifically, the guide 2 has an extension in a predetermined rectilinear direction A, and a prismatic cross section in which an upper longitudinal groove 2a and a lower longitudinal groove 2b are formed, which extend substantially along the entire longitudinal extension of the guide 2.
    In particular, the upper longitudinal groove 2a and the lower longitudinal groove 2b both have a trapezoidal profile and are symmetrical to each other relative to a horizontal center plane of the guide 2.
    Although in the accompanying figures a guide 2 is shown with a particular shape, the present invention should by no means be construed as limited to this form, as it may advantageously also function with guides having a different shape from that shown in the figures.
    An end portion 2 'of the guide 2, which has none of the longitudinal grooves 2a, 2b, is rigidly and cantilevered to a fixed part 3 of the machine tool, such as a portion of the corresponding base frame, so as to protrude laterally from the fixed part 3.
    The group 1 further provides a shoe 4 which is capable of sliding along the guide 2.
    The shoe 4 in turn includes a bearing member 5, which is intended for direct coupling with the guide 2 and has a substantially "C" -shaped profile.
    For receiving the guide 2, a longitudinal recess 5 'is defined in the bearing member 5, which faces outward and has a cross section whose shape is complementary to a portion of the guide 2, on which the upper 2a and 2b lower longitudinal grooves.
    In order to allow in the two contact areas between the upper 2a and 2b lower longitudinal grooves, the relative movement of the guide 2 and the corresponding complementary portions of the shoe 4, are each an upper ball or
    Roller circulation system 6 or a lower ball or
    Roller circulating system (not shown) provided.
    In the upper part of the bearing member 5, a first threaded hole 5a and a second threaded hole (not shown) are further made, which are parallel to each other and their function will be described in more detail in the following description.
    Although not explicitly shown in the figures, the bearing member 5, possibly also with the help of other mechanical elements and / or organs, be connected to the workpiece to be machined or, alternatively, to the tool selected for the machining to be performed on the workpiece.
    The group 1 also includes a lateral plate 7 rigidly fixed to the support member 5 and arranged to closely abut a flat surface 8 of the latter facing the fixed part 3 of the machine tool.
    Optionally, an additional strip 9 of relatively soft material, such as rubber, polyurethane, felt, plastic, brass or bronze may be provided at the lower part and over the entire length of the side plate 7.
    More specifically, the side plate 7 is disposed directly over the end portion 2 'of the guide 2, so that the additional strip 9 abuts against and strokes over a flat surface of the end portion 2' when the slide shoe 4 is in motion, in this way to block at any time the lateral access path from the outside to the upper ball or roller circulation system 6 and thus to prevent that in the. Machining dust produced there penetrate and get into the upper ball or roller circulation system 6 and affect its function.
    According to further variants of the present invention, which are not shown in the accompanying figures, the additional strip 9 can be excluded and instead a lateral plate can be provided, which consists of a relatively soft material, such as bronze, brass, rubber, polyurethane or plastic , and is arranged in direct contact with the underlying end portion 2 'of the guide 2.
    On the other hand, at the upper part of the side plate 7, a first through hole 10a and a second through hole 10b are provided which are parallel to each other and each have a first widened portion 11a and a second widened portion 11b on an outer side 12 of the side plate 7, opposite to the side thereof which is in contact with the support member 5.
    The group 1 also includes a first screw 13a and a second screw 13b respectively through the first through hole 10a and the second through hole 10b of the side plate 7, respectively, so that the corresponding heads in the first flared portion 11a and 11b the second widened portion 11b are housed.
    The first screw 13a and the second screw 13b are further screwed into the first threaded hole 5a and in the second threaded bore of the bearing member 5, just to realize the rigid coupling between the latter and the side plate 7.
    Also mounted on the support member 5 is a linear seal 5 "which is disposed parallel to the direction A in an area between the upper ball or roller circulation system 6 and the contact area between the side plate 7 and the underlying guide 2 to provide another protective barrier the penetration of the machining residues from the outside into the upper ball or roller circulation system 6 to form.
    Further, since the side plate 7 is a full, solid component, it functions not only as a guide cleaning member but also as a shutter member to prevent dust and / or machining residues from entering the upper ball or roller circulation system 6 from the outside can.
    Although not shown in the figures, a front closure and / or cleaning system and a rear closure and / or cleaning system may also be provided in the group 1, respectively at the front region and at the rear region of the sliding shoe 4 that is, downstream and upstream of the upper ball or roller circulation system 6, to prevent dust and machining debris from entering the upper ball or roller circulation system 6 from said front and rear portions.
    On the other hand, referring to Figs. 7-10, reference numeral 100 denotes another group of a machine tool according to another embodiment of the present invention.
    The group 100 includes a rectilinear guide 102 which is aligned in a predetermined rectilinear direction A 'and cantilevered rigidly to a fixed portion 103 of the machine tool.
    This guide 102 has the same shape as that of the previously described guide 2.
    The group 100 includes a shoe 104 provided with a bearing member 105 in which a recess 106 is made, which is open to the outside of the bearing member 105 and has a shape that is complementary to a portion of the guide 102, so that Slider 104 is fixed to slide on the guide 102.
    Also in this case, an upper ball or roller circulation system and a lower ball or roller circulation system (not shown) are provided between the upper and lower grooves of the guide 102 and the corresponding complementary portions of the bearing member 105, respectively, to guide the sliding shoe 104 along the To allow guide 102.
    The group 100 also includes a profiled member 107 that can be rigidly and releasably connected to the bearing member 105.
    The profiled member 107 is integrally formed with a side member 108 having a substantially "C" shaped profile and an elongated plate 109 extending from an upper portion of the side member 108.
    At the lower part and over the entire length of the elongate plate 109, an additional strip 110 of relatively soft material is provided, such as rubber, polyurethane, felt, plastic, brass or bronze.
    Alternatively, as in the previously described
    Embodiment, the additional strips 110 excluded and provided instead that the elongated plate 109, or the entire profiled member 107, made of a relatively soft material, such as bronze, brass, rubber, polyurethane or plastic.
    More specifically, the elongate plate 109 and the corresponding additional strip 110 are arranged so that the latter abuts against an upper surface of the guide 102 and slides on the guide 102 when the
    Slide shoe 104 is set in motion.
    The function of the elongate plate 109, in cooperation with the additional strip 110, if present, to prevent dust and machining debris from being able to penetrate laterally into the upper contact area between the shoe 104 and the guide 102.
    On the other hand, the side member 108 has a plurality of holes 111 provided in a "C" -shaped area of the corresponding front side and facing the guide 102.
    The plurality of bores 111 may be connected to a compressed air system (not shown), which serves to output a directed onto the guide 102 compressed air flow and in this way the removal of dust or
    To allow processing residues, which may have previously accumulated in the region of the guide 102 in the vicinity of the shoe 104.
    In particular, each bore of the plurality of holes 111 is aligned such that the output compressed air flow is oriented so that any residues or dust from the sliding portion of the shoe 104 are removed.
    In this case, too, on the support 105, a
    Linear seal 105 "provided, which is arranged parallel to the direction A 'in an edge region of the recess 106 and adapted to be in contact with the underlying guide 102, thus closing the passage between the latter and the bearing member 105.
    According to a variant of the sliding shoe 104, which is not shown in the figures, in the profiled member 107, a further lateral element such as that described above can be provided.
    This further side member is fixed to the elongated plate 109 on the side opposite to the above-mentioned side member 108, and is also connected to the
    Compressed air system connected.
    This particular variant of the shoe 104 makes it possible to remove any dust or debris that may have accumulated on the guide 102 upstream or downstream of the shoe 104.
    As can be seen from the above description, the machine tool according to the invention has a structure which is such that it can effectively prevent dust and residues of workpiece machining from getting into the areas of interaction between the shoe and the corresponding guide, so that a blockage caused by these machining residues of the shoe or even the breakage of shoe or guide is avoided.
    The advantages achieved with the machine tool proposed here are even more evident in the cases in which said machine is used for the machining of workpieces of a certain hardness, since in these situations the dust produced by the machining has a very small grain size and thus even easier Even in the smallest gaps can penetrate.
    This invention has been described by way of illustration but not limitation in the preferred embodiments. However, variations and / or changes may be made by those of skill in the art, all of which are within the scope of the invention as defined in the appended claims.
    权利要求:
    Claims (10)
    [1]
    Claims:
    1. Machine tool for machining workpieces, comprising: a in a predetermined direction (A, A ') aligned linear guide (2, 102), wherein in this linear guide (2, 102) at least one upper-side surface portion is defined; a slider (4, 104) adapted to slide on the linear guide (2, 102); the sliding device (4, 104) comprising: at least one system having rolling elements (6) adapted to allow the sliding device (4, 104) to slide on the linear guide (2, 102); a shutter member (5 ", 105") extending along a substantially parallel direction to said predetermined direction (A, A ') and disposed so as to prevent, in use, dust and machining residues from entering said at least one a system with rolling elements (6) can get; and a scraper member (7, 107) extending along a substantially parallel direction to said predetermined direction (A, A '), wherein in the scraper member (7, 107) is defined at least one scraper surface arranged such that it brushes over the at least one top surface portion of the linear guide (2, 102) while the slider (4, 104) slides on the linear guide (2, 102) to, in use, remove dust and / or processing residues from the at least one top side Surface section of the linear guide (2, 102) to remove.
    [2]
    2. Machine tool according to claim 1, characterized in that the at least one upper-side surface portion of the linear guide (2, 102) and the at least one stripping surface of the stripping element (7, 107) are substantially planar.
    [3]
    3. Machine tool according to one of the preceding claims, characterized in that the stripping element (7, 107) over the entire length of the sliding device (4, 104).
    [4]
    4. Machine tool according to one of the preceding claims, characterized in that the closure element (5 ", 105") between the stripping element (7, 107) and the at least one system with rolling elements (6) is provided.
    [5]
    5. Machine tool according to one of the preceding claims, characterized in that the sliding device (4, 104) includes a bearing element (5, 105), which includes the at least one system with rolling elements (6), and in that the stripping element (7, 107) is detachably connected to the bearing element (5, 105).
    [6]
    6. Machine tool according to one of the preceding claims, characterized in that the stripping element (7, 107) made of brass, bronze, rubber, polyurethane or plastic.
    [7]
    7. Machine tool according to one of the preceding claims, characterized in that the stripping element (7, 107) includes a strip of material (9, 110), in which the at least one contact surface is formed; wherein this strip of material (9, 110) consists for example of rubber, polyurethane, felt, plastic, brass or bronze.
    [8]
    8. Machine tool according to one of the preceding claims, characterized in that at least one end portion of the stripping element (107) at least one bore (111) is formed, which faces the linear guide (102) and, in use, are connected to a compressed air system in order, in use, to remove residual materials from the at least one bore (111) during use of the workpieces formed on the linear guide (102) downstream and / or upstream of the slide device (104). are located.
    [9]
    A machine tool according to claim 8, characterized in that the at least one bore includes a plurality of bores (111) made in a portion of the stripper member (107) which is substantially "C" -shaped.
    [10]
    10. Machine tool according to claim 8 or 9, characterized in that the at least one bore (111) is inclined along a direction that the at least one bore (111) exiting compressed air, in such a way to the linear guide (102) makes sure that the residual materials that are created during machining of the workpieces are removed.
    类似技术:
    公开号 | 公开日 | 专利标题
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    DE10241199B4|2009-01-02|Linear guide with pneumatic dust removal
    EP3630382B1|2021-07-28|Device for guiding metal strips having wear bodies in a finishing train
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    同族专利:
    公开号 | 公开日
    DE102018201124A1|2018-08-02|
    AT519785B1|2019-07-15|
    IT201700010919A1|2018-08-01|
    AT519785A3|2019-04-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE883985C|1951-07-01|1953-07-23|Rolf Geiger|Protective device, especially for guideways of slide-like moving parts of woodworking machines|
    US2951728A|1957-10-14|1960-09-06|Claud E Drake|Dust proof ball bearing slides|
    DE19628026A1|1995-07-11|1997-01-23|Nsk Ltd|Linear guide system, giving simple seal against dirt or other abrasive matter|
    US3698725A|1971-01-13|1972-10-17|Giddings & Lewis|Hydrostatic seal for rotary machine tool spindles|
    DE19915042B4|1998-04-02|2017-03-02|Nsk Ltd.|Linear motion guide apparatus|
    DE102006020068A1|2006-04-29|2007-11-15|Schaeffler Kg|Seal of a guide carriage of a linear guide|
    US20090310892A1|2008-06-17|2009-12-17|Hiwin Technologies Corp.|Linear motion guide apparatus having changeable sealing structure|CN111790924B|2020-08-06|2021-05-25|南通威锋重工机械有限公司|Lathe capable of automatically cleaning and maintaining|
    CN112059881B|2020-08-21|2021-12-10|南京康聚医疗器械有限公司|A multi-angle polishing equipment for wooden sculpture|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    IT102017000010919A|IT201700010919A1|2017-02-01|2017-02-01|Improved machine tool.|
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