• 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:
    A method for processing a hollow workpiece (28), in particular cylinder, cylinder tube or the like, mounted on a machine tool (27) is shown, in which a peeling tool (1) is inserted into the workpiece (28) and which is peeled off, which peeling tool (1) at least two guide strips (4, 5, 6, 7) for supporting the peeling tool on the workpiece (28), at least one peeling knife (8, 9) arranged between two guide strips (4, 5 or 6, 7) and one to the peeling blade (8, 9) subsequent chip chamber (10, 11), wherein through the chip chamber (10, 11) a cooling lubricant (24) for at least discharging at least one accumulating during peeling chip (25) flows. In order to ensure a safe discharge of chips during the peeling, it is proposed that the workpiece (28) is peeled off during a cooling lubricant (24) flowing through the workpiece (28) against the advance direction (26) of the peeling tool (1), wherein the cooling lubricant ( 24) passes the chip (25) through the clamping chamber (10, 11) laterally on the peeling tool (1) and out of the workpiece (28).
    公开号:AT513785A1
    申请号:T50061/2013
    申请日:2013-01-29
    公开日:2014-07-15
    发明作者:
    申请人:Wfl Millturn Tech Gmbh & Co Kg；
    IPC主号:
    专利说明:

    -1 -
    The invention relates to a method for processing a clamped on a machine tool hollow workpiece, in particular cylinder, cylinder tube or the like, in which a peeling tool is inserted into the workpiece and this is peeled, which peeling tool at least two guide rails for supporting the peeling tool on the workpiece, at least one between two guide rails arranged paring knife and a subsequent to the paring knife chip chamber, wherein a cooling lubricant flows through the chip chamber for at least discharging at least one accumulating during peeling chip.
    In order to be able to process cylinders, cylinder tubes and the like internally, tools are known from the prior art which consist of a peeling tool and an adjoining roller burnishing tool (DE60114198T2, EP1153683B1). Although known peeling tools have at their peeling head a chip chamber, but their chips are washed away in the feed direction of the peeling tool with a coolant flow from the peeling tool in the direction of the clamping of the workpiece. For this, the cooling lubricant must be used with considerably high pressures in order to press it through the tool and also to ensure that all shavings are swept away by the peeling tool. Retaining chips are in fact a danger to the quality of internal machining, especially after a peeling no further machining of the workpiece is done, but the workpiece is usually rolled. In addition, according to the prior art, even with comparatively high coolant pressure, wedging of the chips on the clamping or the spindle of the machine tool can not be ruled out - which leads to a danger to the reproducibility of the method. In addition, residual chips can usually only be removed safely with an unclamping of the workpiece, resulting in considerable time delays in the process.
    The object of the invention is therefore to modify a method for processing a hollow workpiece clamped on a machine tool in such a way that the chips produced during peeling are reliably removed from the workpiece and the workpiece can thus be processed quickly and reproducibly.
    The invention achieves the stated object in that the workpiece is scanned at a flowing against the feed direction of the peeling tool through the workpiece cooling lubricant, wherein the cooling lubricant passes the chip through the clamping chamber laterally on the peeling tool and discharges from the workpiece.
    If the workpiece is scanned at a against the feed direction of the peeling tool flowing through the workpiece coolant, the coolant passes the chip through the clamping chamber side of the peeling tool and discharges from the workpiece, it can be ensured that no chips left behind the peeling tool - and thus under other endanger the reproducibility of the process. A backward chip discharge on the peeling tool can thus enable the cavity of the workpiece to be free of chips after peeling. In addition, according to the invention, the possibility of utilizing the advantage of the flow cross-section narrowed by the peeling blade opens up, in order to ensure a safe passage of the chips through increased flow velocities, even if a comparatively low pressure is applied to the cooling lubricant. A particularly energy-efficient method can thus be achieved. The use of a peeling tool with the chip chamber according to the invention can thus ensure the discharge of chips formed during peeling and thus also ensure that subsequent processing steps subsequent to the peeling are not affected. In addition, with the inventive discharge of chips during peeling, there can also be the advantage that, when the peeling head is retracted, chips possibly remaining in the workpiece can also be pushed out. A time-consuming freeing of the workpiece from chips can thus be omitted, which can allow short processing times in the production of a cylinder, cylinder tube or the like.
    In general, it is mentioned that in the structural design, for example, it may be sufficient to form the respective chip chamber through a continuous recess, opening into the front and rear of the peeling tool, of any desired shape. The recess for the chip chamber can be introduced, for example, only in a comparison with the shank of the peeling tool in diameter larger trained peeling head. An external flow path of the cooling lubricant, namely between the workpiece and the peeling tool can be formed so as to flush chips from the workpiece.
    If the workpiece is rinsed with cooling lubricant when retracting the peeling tool provided with the peeling tool rearwardly directed nozzles, the peeled workpiece can also be cleaned when removing the peeling head of chips in addition. A chip-free cavity in the workpiece can thus be ensured improved. Advantageously, subsequent processing steps can subsequently be carried out without further measures for cleaning the workpiece. The peeling head according to the invention can therefore ensure short processing times for peeling workpieces and thus enable a particularly rapid method, for example for producing a cylinder.
    Since, according to the invention, a chip-free workpiece can be achieved, it can also be made possible to complement the method by inserting a roller burnishing tool into the workpiece after it has been peeled off and then rolling it. 4/20 -4-
    If a boring tool is introduced into the workpiece before it is peeled off and it is scrubbed with it, the cutting load of the peeling tool can be reduced and thus the reproducibility of the method can be increased.
    Increased precision in the machining of the workpiece can be made possible if, after rolling, a measuring tool is inserted into the workpiece and thus measured.
    A further facilitation in the handling of the method may result if the same support rod is provided with the respective tool for roughing, peeling and rolling and in particular also for measuring. Thus, not least the joint clamping on the support rod can be used on the tool holder to ensure the same and the same precise guidance for all tools.
    Short processing times can be reproducibly met when roughing, peeling and rolling and in particular also for the measurement of the workpiece in the same clamping of the workpiece is performed on the machine tool. If the chip chamber guides the chip with the help of two longitudinal edges, one of which runs parallel to a guide strip and the other edge from the peeling knife of the other guide strip, the safety of a trouble-free discharge of chips against the advancing direction of the peeling knife can be increased. This especially because the chip chamber can provide more freedom in terms of their movement by their inventive extension of the paring knife towards the back of the peeling head chips. The improved rinsing of chips can further increase the reproducibility of the method. 5/20 -5- If the chip chamber guides the chip in the area of the peeling knife with the help of two parallel edgings, this structurally simple measure can provide for a targeted and sufficient steering of chips by forming parallel guide surfaces for the chip.
    If the section of the longitudinal edge bordering the peeling blade is pulled up to the level of the guide rail, the chip chamber can be fed with improved chips. This raised, acting in the manner of a barrier area, a steering of the chips can be achieved in the direction of the chip chamber.
    The method can be considerably facilitated in its handling when the peeling knife firmly connected to the wall of the chip chamber via a knife holder generates the chip. So can also be reduced by a simple accessibility of the paring knife maintenance of the peeling tool.
    In particular, the use of a peeling tool, which has at least two guide strips, at least one peeling knife arranged between two guide strips and a chip chamber adjoining the peeling knife, can be suitable for stripping a clamped workpiece which flows through with a cooling lubricant against the feed direction of the peeling tool.
    Particularly advantageous may be the use of a peeling tool herausstel-len, the chip chamber leads the chip by means of two longitudinal edges, of which one edge parallel to a guide rail and the other boundary from the peeling knife of the other guide rail tapers steadily.
    In the figures, for example, the subject invention is illustrated in more detail using an exemplary embodiment. Show it
    1 is a sectional view of a workpiece which is clamped in a partially illustrated machine tool and is peeled, 6/20 -6-
    2 is a plan view of a tool holder of the machine tool with various tools,
    Fig. 3 is a three-dimensional side view of the peeling tool according to the invention and
    4 is an end view of the peeling tool of FIG .. 3
    The peeling tool 1 shown, for example, in FIGS. 3 and 4 is used for peeling off substantially cylindrical cavities of workpieces 28, namely a cylinder jacket of a cylinder, as can be seen in FIG. In order to be able to penetrate this, the peeling tool 1 has a peeling head 2 and a tool shank 3 in order to connect the peeling tool 1 to a tool spindle 29 of a tool holder 30, as shown in more detail in FIG.
    Based on FIG. 2, it can also be seen that four diametrically opposite guide strips 4, 5, 6, 7 are provided for centering the peeling tool 1 in the cavity of the workpiece 28 on the peeling head 2, which extend over the entire peeling head length. In addition, the peeling head 2 replaceable peeling knives 8, 9 are assigned, which are each arranged centrally between two guide rails 4, 5 and 6, 7. Each paring knife 8, 9 then follows a chip chamber 10 and 11, which are each formed as from the end face 12 to the back 13 of the peeling head 2 on the peeling head 2 through recess 23 - see also Fig. 4. The chip chambers 10 and 11 are of bounded longitudinal edges 14, 15, of which a longitudinal edge 14 parallel to the guide bar 4 extends.
    In order to allow a chipping chamber 10 or 11 for discharging shavings 25 formed during peeling in the direction of the rear side 13 of the peeling head 2 or against the advancing direction of the peeling head 2, the other longitudinal edge 15 is particularly designed. This runs from the paring knife 8 or 9 of the other guide bar 4 or 6 steadily, so that chips 25 safely through the longitudinal 7ge ge boundary 14, 15 and guided by the peeling head 2 in the direction of the tool shank 3 , which is slimmer compared to the peeling head 2 and so does not hinder the discharge of the chips 25 from the workpiece 28.
    The longitudinal edges 14, 15 of the chip chambers 10, 11 run parallel in the region of the paring knife 8, 9, which can improve the chip deflection in the direction of the tool shank 3. All the more so because also the peeling blades 8, 9 radially opposite portions 16, 17 of the margins 14, 15 are raised to the height of the respective guide strips 5, 6.
    The replaceable peeling blades 8, 9 are attached to the wall of the chip chamber 10, 11 for easy accessibility by a knife holder 18, 19 the peeling blades 8, 9 positively and non-positively connects with the respective wall.
    In order to mitaustragen during the retraction of the peeling head 2 from the workpiece 28 possibly left in the workpiece 28 chips 25, 2 backward openings 22 are provided on the peeling head for the delivery of cooling lubricant 24 into the cavity of the workpiece.
    2, attention is drawn to the various tools 1, 31, 32, 33 which are used in the method according to the invention for machining a hollow workpiece 28 clamped to a machine tool 27 on its tool spindle 36. Thus, before being peeled off with the peeling tool 1, a boring tool 31 is inserted into the clamped workpiece 28 and this is scrubbed in order to reduce the cutting loads on the subsequent peeling tool 1, with which the workpiece 28 is subsequently scraped off. After peeling with the peeling tool 1, a roller burnishing tool 32 is inserted into the workpiece 28 and this rolls it, which guarantees a significantly improved surface quality. After being rolled with the roller burnishing tool 32, a measuring tool 33 is inserted into the workpiece 28 for its measurement, after which a possibly detected irregularity in the wall thickness of the wall 8/20 is detected.
    Workpiece 38 balanced by an external machining of the workpiece. For this purpose, for example, a not-shown cutter can be used. To form a relative movement between the respective tool 1, 31, 32, 33 and the workpiece 28, either the tool 1, 31, 32, 33 can be rotated by means of the tool spindle 29 and / or the workpiece 28 via the tool spindle 29
    The tools 1, 31, 32, 33 for roughing, peeling, rolling and measuring are taken up by the same carrier rod 34, which is fastened to the tool spindle 29 of the tool holder 30. The method according to the invention is therefore particularly easy to handle. In addition, the roughing, peeling, rolling, measuring or the possible reworking of the outside of the workpiece 28 is carried out in the same clamping of the workpiece 28 on the machine tool, whereby the procedure is facilitated and the implementation of the method can be accelerated.
    Such a clamping is shown in Fig. 1, in which the workpiece 28 is clamped to the workpiece spindle 36 and movably mounted on a steady rest 37 of the machine tool 27. 9.20
    权利要求:
    Claims (13)
    [1]
    Claims 1. A method for processing a hollow workpiece (28), in particular cylinder, cylinder tube or the like, clamped on a machine tool (27), in which a peeling tool (1) is inserted into the workpiece (28) and this is peeled, which peeling tool (1) at least two guide strips (4, 5, 6, 7) for supporting the peeling tool on the workpiece (28), at least one between two guide strips (4, 5 or 6, 7) arranged paring knife (8, 9) and to the paring knife (8, 9) subsequent clamping comb he (10, 11), wherein through the chip chamber (10, 11) a cooling lubricant (24) for at least discharging at least one accumulating during peeling chip (25) flows , characterized in that the workpiece (28) at a against the feed direction (26) of the peeling tool (1) through the workpiece (28) flowing cooling lubricant (24) is peeled off, wherein the cooling lubricant (24) the chip (25) d urch the clamping chamber (10, 11) laterally past the peeling tool (1) and out of the workpiece (28) discharges.
    [2]
    2. The method according to claim 1, characterized in that the workpiece (28) upon retraction of the peeling tool (1) provided with the peeling tool rearwardly directed nozzles (22) with cooling lubricant (24) is rinsed.
    [3]
    3. The method according to claim 1 or 2, characterized in that after peeling a roller burnishing tool (32) inserted into the workpiece (28) and this is rolled so. 10/20 -2-
    [4]
    4. The method of claim 1, 2 or 3, characterized in that prior to the peeling a boring tool (31) inserted into the workpiece (28) and this is scrubbed therewith.
    [5]
    5. The method according to any one of claims 1 to 4, characterized in that after rolling a measuring tool (33) inserted into the workpiece (28) and this is measured.
    [6]
    6. The method according to claim 4 or 5, characterized in that for the roughing, peeling and rolling and in particular for measuring the same carrier rod (34) with the respective tool (1, 31, 32, 33) is provided.
    [7]
    7. The method of claim 4, 5 or 6, characterized in that roughing, peeling and rolling and in particular also for measuring the workpiece (28) in the same clamping of the workpiece (28) on the machine tool (17) are performed.
    [8]
    8. The method according to any one of claims 1 to 7, characterized in that the chip chamber (10, 11) the chip (25) by means of two longitudinal edges (14, 15) leads, of which a boundary (14) parallel to a guide strip (5, 7) and the other boundary (15) from the peeling blade (8, 9) of the other guide strip (4, 6) tapers.
    [9]
    9. The method according to any one of claims 1 to 8, characterized in that the chip chamber (10, 11) the chip (25) in the region of the peeling blade (8, 9) by means of two parallel edges (14, 15) leads.
    [10]
    10. The method according to any one of claims 1 to 9, characterized in that the peeling blade (8, 9) radially opposite region (16, 17) of the longitudinal edge (14) to the height of the guide bar (5, 7) is pulled up. 11/20 -3-
    [11]
    11. The method according to any one of claims 1 to 10, characterized in that via a knife holder (18, 19) with the wall of the chip chamber (10, 11) fixedly connected paring knife (8, 9) generates the chip (25).
    [12]
    12. Use of a peeling tool (1), the at least two guide strips (4, 5, 6, 7), at least one between two guide strips (4, 5 or 6, 7) arranged peeling knife (8, 9) and one to the paring knife (8, 9) adjoining chip chamber (10, 11), for stripping a clamped and with a cooling lubricant (24) against the feed direction (26) of the peeling tool (1) flow through the workpiece (28).
    [13]
    13. Use according to claim 12, characterized in that the chip chamber (10, 11) the chip (25) by means of two longitudinal edges (14, 15) leads, of which the one boundary (14) parallel to a guide strip (5 , 7) and the other boundary (15) from the peeling blade (8, 9) of the other guide bar (4, 6) tapers continuously. 12/20
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE2362788A1|1973-12-18|1975-04-03|Madison Ind Gmbh|PROCESS FOR SHEATING AND ROLLING THROUGH HOLES AND DEVICE FOR CARRYING OUT THE PROCESS|
    DE7624330U1|1976-08-03|1976-11-18|Alfred Loch Kg Maschinenfabrik, 8300 Landshut|BORING TOOL|
    DE7630674U1|1976-09-30|1978-08-17|Wilhelm Hegenscheidt, Gmbh, 5140 Erkelenz|COMBINED SHEELING AND BURNISHING TOOL|
    DE8109702U1|1981-04-01|1981-10-15|Hermanns, Matthias, 5140 Erkelenz|"TOOL FOR PRE-MACHINING AND FINISHING HOLES"|
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    DE102011110044A1|2011-08-11|2013-02-14|Ferroll Gmbh|Peeling tool, method for manufacturing a cylinder unit and lathe|
    US2272271A|1939-04-10|1942-02-10|Mallory Res Co|Method and apparatus for machining materials|
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    AT1324U1|1995-10-11|1997-03-25|Plansee Tizit Gmbh|TOOL WITH INSIDE COOLANT SUPPLY|
    US6367137B1|2000-05-16|2002-04-09|Sierra Machinery, Inc.|Skiving and roller burnishing tool|
    EP1160042B1|2000-06-02|2005-10-26|MAPAL Fabrik für Präzisionswerkzeuge Dr. Kress KG|Reamer|
    DE102005034422B4|2005-07-13|2008-10-23|MAPAL Fabrik für Präzisionswerkzeuge Dr. Kress KG|Reamer and process for its production|
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    JP2012101322A|2010-11-10|2012-05-31|Mitsubishi Heavy Ind Ltd|Reamer and method for working hole|US9114492B2|2011-10-07|2015-08-25|Ahhneu-Ellsworth Limited Liability|Coolant supply for a machine tool|
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    DE102012223183B4|2012-12-14|2014-07-10|Kennametal Inc.|Cutting tool, in particular reaming tool|
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    法律状态:
    2016-10-15| HA| Change or addition of new inventor|Inventor name: REINHARD KOLL, AT Effective date: 20160908 |
    优先权:
    申请号 | 申请日 | 专利标题
    AT506212012|2012-12-21|
    ATA50061/2013A|AT513785B1|2012-12-21|2013-01-29|Method for processing a hollow workpiece clamped on a machine tool|ATA50061/2013A| AT513785B1|2012-12-21|2013-01-29|Method for processing a hollow workpiece clamped on a machine tool|
    EP13199290.1A| EP2745967B1|2012-12-21|2013-12-23|Method for machining a hollow workpiece clamped on a machine tool|
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