JP2006205338A - Work support device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a work support device for minimizing reduction in productivity, even on a work of a small lot multi-production, without being influenced by the processing number of the work. <P>SOLUTION: This work support device has a work support tool 11 having a peripheral-shaped work fixing part 19 for supporting the inner periphery of the work W, and a device body 31 engaged with the work support tool, and is formed by successively replaceably arranging the plurality of work support tools. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a workpiece support device that supports a cylindrical workpiece.

  When forming a predetermined processed product by performing necessary processing on a cylindrical material, for example, when a gear processed product having a predetermined dimension is formed by performing a finishing process on a gear material formed with teeth, as shown in FIG. Product) W support device 101 and finishing device 151 were used.

Here, the support device 101 for the workpiece W is a device main body 131 that includes a workpiece support 111 that is inserted into the center hole of the workpiece W and holds the workpiece W, and a chuck portion 132 that holds one end of the workpiece support 111. And an auxiliary support 141 having a center shaft 142 that supports the other end of the work support 111. When finishing the workpiece W supported by the support device 101, the finishing tool 152 of the finishing device 151 arranged at a position facing the workpiece W is moved to the workpiece W side, and the finishing tool 152 is moved. By rotating the workpiece W while pressing it, the workpiece W was finished to a predetermined dimension.
Japanese Patent Publication No. 7-16815

  In recent years, when machine parts such as gears are machined, machining can be efficiently performed by machining the same type of workpiece W continuously. However, not all the workpieces W can be processed continuously, and each time a small variety of workpieces W are required, it is necessary to replace the chuck unit 132 assembled to the support device 101, particularly the device main body 131. Therefore, it takes a long time to replace the chuck portion 132, and the productivity is reduced.

  Accordingly, an object of the present invention is to provide a workpiece support device that suppresses a decrease in productivity to a minimum even for a small number of various types of workpieces without being affected by the number of workpieces processed.

  The workpiece support device of the present invention includes a workpiece support having a circumferential workpiece fixing portion that supports the inner periphery of the workpiece, and a device main body to which the workpiece support is engaged, and the workpiece support can be sequentially replaced. The first feature is that a plurality of them are arranged.

  In addition to the first feature described above, the workpiece support device of the present invention has a second feature that the workpiece fixing portion of the workpiece support can be enlarged in diameter toward the outer peripheral side.

  Furthermore, in addition to the first or second feature described above, the workpiece support device of the present invention has a third feature that includes an auxiliary support tool that presses the work supported by the work support tool in the axial direction.

  According to the workpiece support device of the first feature of the present invention, since the workpiece support holding the workpiece can be sequentially detached from the device main body, even if the type of workpiece to be processed is changed, the workpiece support only needs to be changed. Since the workpiece can be supported, it is not necessary to assemble the apparatus main body, which takes a lot of time, and the reduction in productivity can be suppressed.

  Further, according to the workpiece support device of the second feature of the present invention, the workpiece can be held by expanding the workpiece fixing portion of the workpiece support to the outer peripheral side, so that the workpiece can be supported with a simple structure.

  Furthermore, according to the workpiece support device of the third feature of the present invention, the auxiliary support presses the workpiece in the axial direction, so that the workpiece can be easily positioned and high machining accuracy can be maintained.

  Shortening the change time of the support device, which occurs when the type of workpiece to be processed, is changed with a simple device.

  1 to 7 show an embodiment of a workpiece supporting device according to the present invention. FIG. 1 is a plan view showing a workpiece supporting device and a finishing device, and FIG. 2 shows a first stage of workpiece supporting. 3 is a partial sectional plan view showing a second stage of workpiece support, FIG. 4 is a partial sectional plan view showing a third stage of workpiece support, and FIG. 5 is a fourth stage of workpiece support. FIG. 6 is an enlarged view of a portion A in FIG. 4, and FIG. 7 is an enlarged view of a portion B in FIG.

  FIG. 1 shows a cylindrical workpiece W, in this case a gear having a tooth profile 2 on the outer periphery, a support device 1 for supporting the workpiece W, and a finishing device 51 for finishing the workpiece W. The work W support device 1 includes a work support 11 that supports the inner periphery and one end of the work W, a device main body 31 that holds one end of the work support 11, and the other end of the work W. And an auxiliary support 41 that holds the other end of the work support 11. Here, a plurality of work support tools 11 are arranged in a rotary index manner so that they can be sequentially changed.

  Here, based on FIG.2 and FIG.4, the support apparatus 1 is demonstrated. FIG. 2 shows the workpiece support 11 that supports the workpiece W before processing, and the apparatus main body 31 before the workpiece support 11 is mounted. The work support 11 includes a cylindrical base 15 having an outer peripheral taper 12 inclined to the outer periphery of one end, a guide member 22 inserted into the outer periphery of the other end of the cylindrical base 15, and an outer periphery of the cylindrical base 15, and is inserted into one end. And an annular first sleeve 17 having a positioning end face 18 that comes into contact with one end face of the workpiece W. The cylindrical base 15 has a horizontal oil hole 13 composed of a space extending in the axial direction from one end surface, and a vertical oil reservoir 14 extending from the other end of the horizontal oil hole 13 and extending in the outer diameter direction. The outer peripheral end of the oil reservoir 14 is continuous with an annular oil reservoir 25 extending in the axial direction between the cylindrical base 15 and the guide member 22. O-rings 20 and 21 made of a rubber material are arranged on both outer sides in the axial direction of the annular oil reservoir 25. An oil space 30 is defined by the annular oil reservoir 25, the vertical oil reservoir 14 and the lateral oil hole 13. A push rod 26 having an O-ring 16 attached to the outer periphery is inserted into the oil hole opening 27 on the one end portion side of the cylindrical base 15 so as to be movable in the axial direction. The oil space 30 is sealed by the push rod 26. Is filled with oil. Further, a cap 23 that restricts the movement of the guide member 22 inserted into the outer periphery of the cylindrical base 15 in the axial direction is fixed to the other end of the cylindrical base 15 by bolts 24. The guide member 22 is provided with a workpiece fixing portion 19 in which a portion facing the annular oil reservoir 25 is formed thinner than an end portion, and the outer diameter of the workpiece fixing portion 19 is formed slightly smaller than the inner diameter of the workpiece W.

  The apparatus main body 31 includes a cylindrical outer cylinder 37, and a cylindrical rotating shaft 32 that is rotatable on the inner peripheral side of the outer cylinder 37 via a bearing 38. A knock pin 35 with an O-ring 35 attached thereto is inserted so as to be movable in the axial direction. Further, the opening on the work support 11 side of the inner peripheral hole 33 has an inner peripheral taper 34 having the same inclination as the outer peripheral taper 12 of the work support 11.

  FIG. 4 illustrates the auxiliary support tool 41 at a stage before the workpiece W is supported by the support device 1. The auxiliary support 41 includes a cylindrical cylindrical pressing member 44 and an annular second sleeve 42 that is disposed on the inner peripheral side of the cylindrical pressing member 44 and has a pressing surface 43 that contacts the end surface of the workpiece W at one end. .

  Next, the finishing device 51 will be described with reference to FIG. 1. A finishing tool 52 that contacts the tooth profile 2 of the workpiece W is connected to a motor 54 via a spindle 53, and the motor 54 is further connected to a table 56 via a tool base 55. Connected to The table 56 and the tool table 55 are provided with a motor (not shown), and the finishing tool 52 can be moved forward and backward with respect to the workpiece W by interlocking the table 56 and the tool table 55.

  A method of supporting the workpiece W with the support device 1 and a process of finishing the supported workpiece W will be described.

  First, as shown in FIG. 2, the workpiece W is inserted in advance from the cap 23 side of the workpiece support 11 to the outer peripheral position of the workpiece fixing portion 19. Then, the workpiece support 11 into which the workpiece W has been inserted is inserted into the apparatus main body 31 from the push rod 26 side, and the outer peripheral taper 12 of the work support 11 and the inner peripheral taper 34 of the apparatus main body 31 are brought into close contact with each other as shown in FIG. Fix it. Subsequently, as shown in FIG. 4, the auxiliary support tool 41 arranged on the cap 23 side of the work support tool 11 is advanced to the work W side, and the work W is positioned by the pressing surface 43 of the second sleeve 42. The workpiece W is pressed against the end face 18 to position the workpiece W in the axial direction. Then, from this state, the knock pin 35 is advanced to the push rod 26 side, and is further advanced integrally after the push rod 26 abuts. Here, as shown in FIG. 5, the push rod 26 advances along the horizontal oil hole 13 of the cylindrical base 15, so that the oil sealed in the oil space 30 is compressed and supports the workpiece W.

  The state of supporting the workpiece W will be described in detail. As shown in FIG. 6, the workpiece W is pressed against the positioning end surface 18 of the workpiece support 11 by the pressing surface 43 of the second sleeve 42 before the support. Although positioning in the axial direction is performed, a gap S is generated between the workpiece W and the workpiece fixing portion 19 of the workpiece support 11. As described above, the push rod 26 is advanced from the state before the support, and the oil sealed in the oil space 30 is compressed, whereby the pressure in the oil space 30 is increased. At this time, as shown in FIG. 7, the thin workpiece fixing portion 19 bulges to the outer peripheral side due to an increase in oil pressure, abuts against the inner periphery of the workpiece W, and firmly supports the workpiece W.

  Then, with the workpiece W supported, finishing of the workpiece W is started as shown in FIG. That is, the finishing tool 52 moved to a position facing the workpiece W further advances and abuts on the tooth profile 2 and at the same time finishes over the entire circumference of the tooth profile 2, and the finishing tool 52 retracts after finishing the processing. Thereafter, the auxiliary support tool 41 is also retracted rearward, and at the same time, the work support tool 11 is removed from the apparatus main body 31 and replaced with the next work support tool 11 that supports the work W and waits. Subsequently, the workpiece W is continuously supported and finished.

  Moreover, when changing the kind of workpiece | work W to process, it can process continuously by exchanging the workpiece | work support tool 11 and changing a processing program.

  Thus, the workpiece support device 1 includes the workpiece support 11 having the circumferential workpiece fixing portion 19 that supports the inner periphery of the workpiece W, and the device main body 31 with which the workpiece support 11 is engaged. If a plurality of support tools 11 are arranged so that they can be sequentially changed, the work support tools 11 that hold the work W can be sequentially detached from the apparatus main body 31, so that even if the type of the work W to be processed is changed, the work support tool 11 can be removed. The workpiece W can be supported simply by changing.

  Further, in addition to the workpiece support device 1, the workpiece W can be easily supported when the workpiece fixing portion 19 of the workpiece support 11 can be expanded to the outer peripheral side.

  Further, in addition to the workpiece support device 1, if the auxiliary support tool 41 that presses the work W supported by the work support tool 11 in the axial direction is provided, the work W can be easily positioned.

  In the above embodiment, oil pressure is used to increase the diameter of the workpiece fixing portion 19 of the workpiece support 11, but the workpiece fixing portion 19 may be mechanically expanded without being limited to the hydraulic pressure.

It is a top view showing the support apparatus and the general finishing apparatus of the workpiece | work of the Example of this invention. It is a fragmentary sectional top view showing the work supporting device of the example of the present invention, and showing the 1st stage of support of a work. FIG. 4 is a partial cross-sectional plan view illustrating a workpiece support device according to an embodiment of the present invention and illustrating a second stage of workpiece support. It is the fragmentary sectional top view showing the support apparatus of the workpiece | work of the Example of this invention, and showing the 3rd step of support of a workpiece | work. It is a fragmentary sectional top view showing the support apparatus of the workpiece | work of the Example of this invention, and showing the 4th step of support of a workpiece | work. It is the A section enlarged view of FIG. It is the B section enlarged view of FIG. It is a top view showing the support apparatus of the conventional workpiece | work, and a general finishing apparatus.

Explanation of symbols

W Work 11 Work support 19 Work fixing part 31 Device main body 41 Auxiliary support

Claims (3)

  In a workpiece support device for supporting a cylindrical workpiece (W), a workpiece support (11) having a circumferential workpiece fixing portion (19) for supporting the inner periphery of the workpiece (W), and the workpiece support ( 11) An apparatus main body (31) with which the apparatus 11 is engaged, and a plurality of work support tools (11) are arranged so as to be able to be sequentially replaced.   The workpiece support device according to claim 1, wherein the workpiece fixing portion (19) of the workpiece support (11) can be increased in diameter toward the outer peripheral side.   The work support apparatus according to claim 1 or 2, further comprising an auxiliary support tool (41) for pressing the work (W) supported by the work support tool (11) in an axial direction.

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