JP2007181906A - Processing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a small processing device with further improved processing efficiency. <P>SOLUTION: This processing device 1 comprises a bed 2, a pair of workpiece supporting devices 10 and 20 installed on the bed 2, supporting a workpiece W from both ends, and capable of rotary driving the workpiece with a rotary axial line connecting supporting parts on both ends as a center, a processing table 30 installed on the bed 3 and moving backward in a direction crossing with the rotary axial line, and processing means T located on the processing table 30 and processing the workpiece W. The workpiece supporting device 10 and 20 comprise housing parts 11 and 21 fixed to the bed 2, sliding parts 12 and 22 capable of reciprocating relative to the housing parts 11 and 12 in a direction parallel to the rotary axial line, and engagement supporting parts 13 and 23 arranged on the sliding parts 12 and 22 and rotatably supporting the workpiece W with the rotary axial line as a center. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a machining apparatus for machining a workpiece.

Conventionally, processing apparatuses that grind the side surface of a substantially cylindrical workpiece with a rotating grindstone include, for example, the processing apparatus shown in the example of FIG. 4A and the processing apparatus shown in the example of FIG. . 4A and 4B are schematic plan views of a conventional processing apparatus.
4 (A) and 4 (B), the workpiece W is supported by the pair of workpiece support devices 10 and 20, and the workpiece P on the workpiece W is rotated by the machining means T (in this case, rotating). Grinding).
In all the drawings, the X axis and the Z axis are orthogonal to each other, the Z axis is a horizontal direction in which the machining means T is cut into the workpiece W, and the X axis is a horizontal direction orthogonal to the Z axis. Hereinafter, the horizontal direction (Z-axis direction) in which the work table 31 moves forward / backward with respect to the workpiece W is referred to as the forward / backward direction, and the horizontal direction parallel to the rotation axis of the workpiece W (the direction orthogonal to the forward / backward movement direction) (Axial direction) is described as the sliding direction.
In addition to the so-called grinding machine using a numerical control device (CNC device), the machining device includes a lathe, a milling machine, a machining center (a machining device having an automatic tool change function and the like), and the like.

For example, in the prior art described in Patent Document 1, the schematic plan view of the processing apparatus has the configuration shown in the example of FIG.
In the conventional processing apparatus shown in FIG. 4 (A), the work supporting devices 10 and 20 have housing parts 11 and 21 fixed to the bed 2, and the housing part 11 is provided with a fixed main shaft 121. Is provided with a tailstock shaft 221 that can reciprocate in a direction parallel to the rotation axis of the workpiece W.
Engagement support portions 13 and 23 each consisting of a center are provided at the distal ends of the fixed main shaft 121 and the tailstock shaft 221, respectively, and the workpiece W can be rotated while being supported by both the engagement support portions 13 and 23. And is rotationally driven by a drive fitting (not shown).
The processing table 30 includes an intermediate table 32 that moves in the slide direction and an advance / retreat table 31 that moves in the advance / retreat direction.
The intermediate table 32 is provided on the bed 2 and is controlled by the control means 40 (CNC device or the like) by the drive means 32M (servo motor or the like) and the position detection means 32E (encoder or the like). It can reciprocate in parallel directions.
The advance / retreat table 31 is provided on the intermediate table 32, and is controlled by the control means 40 (CNC device etc.) by the drive means 31M (servo motor etc.) and the position detection means 31E (encoder etc.). It is possible to move forward and backward in a direction orthogonal to
The advance / retreat table 31 is provided with a drive means TM provided with a processing means T (in this case, a rotating grindstone).
In the conventional processing apparatus shown in the example of FIG. 4A, the processing means T is moved with respect to the workpiece W in a direction parallel to the rotation axis of the workpiece W and a direction orthogonal to the rotation axis of the workpiece W. .

For example, in the prior art described in Patent Document 2, a schematic plan view of a processing apparatus has a configuration shown in the example of FIG.
The conventional processing apparatus shown in FIG. 4 (B) is different from the conventional processing apparatus shown in FIG. 4 (A) in that the intermediate table 32 is omitted and the bed 2 is in a direction parallel to the rotation axis of the workpiece W. A pair of work support devices 10 and 20 are provided on a slide table TB capable of reciprocal movement.
The slide table TB is provided on the bed 2 and is controlled by the control means 40 (CNC device or the like) by the drive means TBM (servo motor or the like) and the position detection means TBE (encoder or the like). It can reciprocate in parallel directions. Note that the fixed main shaft 121, the tailstock shaft 221, and the two engagement support portions 13 and 23 are the same as the configuration in FIG.
In the conventional machining apparatus shown in the example of FIG. 4B, the tool T is moved with respect to the workpiece W in a direction perpendicular to the rotation axis of the workpiece W, and the workpiece W is moved in a direction parallel to the rotation axis of the workpiece W. It is a method to move.
JP 2005-305589 A JP 11-77493 A

In the prior art described in Patent Document 1, as shown in the example of FIG. 4A, the work table 30 is constituted by the advance / retreat table 31 and the intermediate table 32. In particular, the work table 30 is parallel to the rotation axis of the workpiece W. When moving in such a direction, the advance / retreat table 31 and the intermediate table 32 are moved together, so that the weight is heavy, the speed and acceleration when moving are relatively small, and the machining efficiency may be reduced.
Further, in the prior art described in Patent Document 2, as shown in the example of FIG. 4B, a member that moves in a direction parallel to the rotation axis of the workpiece W mounts the pair of workpiece support devices 10 and 20. Since the slide table TB is used, the weight becomes very heavy. Therefore, there is a disadvantage that the bed is enlarged by the stroke of the slide table TB, and the speed and acceleration when moving the slide table TB are relatively small, and the processing efficiency may be lowered.
The present invention has been devised in view of such a point, and an object of the present invention is to provide a smaller processing apparatus while further improving the processing efficiency.

As means for solving the above-mentioned problems, the first invention of the present invention is a processing apparatus as described in claim 1.
The processing apparatus according to claim 1 is provided with a bed and a pair of workpieces that are provided on the bed and that support the workpieces from both ends and can rotate the workpieces around a rotation axis that connects the support portions at both ends. A processing device comprising: a support device; a processing table provided on the bed and capable of moving back and forth in a direction intersecting the rotation axis; and a processing means mounted on the processing table and processing the workpiece. is there.
The work support device includes a housing part fixed to the bed, a slide part capable of reciprocating in a direction parallel to the rotation axis with respect to the housing part, and the rotation axis arranged on the slide part. An engagement support portion that rotatably supports the workpiece as a center is provided.

The second invention of the present invention is a processing apparatus as set forth in claim 2.
The processing apparatus according to claim 2 is the processing apparatus according to claim 1, comprising control means for controlling a relative position between the work and the processing means in accordance with input processing data, and the work support The apparatus includes a slide moving means for reciprocating the slide section, and a rotating means for rotating the workpiece by the engagement support section, and the work table includes a forward / backward moving means for performing the forward / backward movement. ing.
Then, the control means recognizes the machining location of the workpiece based on the machining data, and controls the slide moving means according to the recognized machining location to set the rotation axis of the workpiece relative to the machining means. A position in a parallel direction is specified, and the forward / backward moving means is controlled to specify a position in a direction intersecting the rotation axis of the machining means with respect to the workpiece.

A third aspect of the present invention is a processing apparatus as set forth in the third aspect.
The processing apparatus according to claim 3 is the processing apparatus according to claim 1 or 2, further comprising measurement means for measuring a processing portion of the workpiece, the processing means and the measurement means sandwiching the rotation axis. The measuring means is fixed to the bed so that they face each other.

The fourth invention of the present invention is a processing apparatus as set forth in claim 4.
A processing apparatus according to a fourth aspect is the processing apparatus according to any one of the first to third aspects, wherein a processing portion in contact with a work in the processing means is provided on an engagement support portion of at least one work support device. A shaping means for shaping is provided.

In the machining apparatus according to the first aspect, the machining table moves forward and backward in a direction intersecting the rotation axis of the workpiece, but does not move in a direction parallel to the rotation axis.
The movement of the workpiece in the direction parallel to the rotation axis is performed by a slide portion in the workpiece support device that supports the workpiece W from both ends.
Compared with the machining apparatus shown in the example of FIG. 4A, the machining table can be made smaller in weight than the machining tables (the advance / retreat table 31 and the intermediate table 32) shown in the example of FIG. In addition, the work support device can have the same weight as the work support device shown in the example of FIG. Therefore, when moving in a direction parallel to the rotation axis of the workpiece, positioning can be performed at a faster speed or acceleration than the machining apparatus shown in the example of FIG. 4A, and machining efficiency can be further improved.
Further, as compared with the processing apparatus illustrated in the example of FIG. 4B, the processing table can have a weight comparable to that of the processing table illustrated in the example of FIG. In addition, the work support device can be made much lighter than the slide table TB shown in the example of FIG. Therefore, when moving in a direction parallel to the rotation axis of the workpiece, positioning can be performed at a faster speed or acceleration than the machining apparatus shown in the example of FIG. 4B, and machining efficiency can be further improved.
Furthermore, there is no need to ensure the stroke of the table, and the bed can be downsized.

  Further, according to the processing apparatus of the second aspect, since the control means is provided and the slide moving means (configured by a servo motor or the like), the rotating means, and the forward / backward moving means may be driven according to the processing data, A processing apparatus can be easily realized.

  Further, according to the processing apparatus of the third aspect, since the measuring means can be fixed at a position on the bed corresponding to the processing means, the measuring means (so-called sizing device or the like) has a simple configuration. Can do.

  Further, according to the machining apparatus of the fourth aspect, the shaping means for shaping the machining means is provided in the engagement support portion of the work support device, so that it is not necessary to provide a dedicated drive means for the shaping means.

The best mode for carrying out the present invention will be described below with reference to the drawings.
FIG. 1 shows an example of a plan view showing a schematic configuration in an embodiment of a processing apparatus 1 of the present invention. 2A shows a schematic plan view (partial cross section) of the workpiece support device 20 of the processing apparatus 1 shown in FIG. 1, and FIG. 2B shows a schematic right side of the workpiece support device 20. A plane view is shown.

● [Overall Configuration of Processing Device 1 (FIG. 1) and Structure of Work Support Device 20 (FIG. 2)]
The processing apparatus 1 includes a bed 2, a work support device 10 that supports one end of a work W (workpiece), a work support device 20 that supports the other end of the work W, a processing table 30, and a driving unit TM (in this example, electric motor). Motor), machining means T (rotating grindstone in this example), control means 40 (CNC control device), and the like.

The advance / retreat table 31 in the processing table 30 is provided on the bed 2 and can advance and retreat in a direction intersecting (for example, orthogonal to) the workpiece rotation axis. The advance / retreat table 31 is provided with drive means 31M (servo motor or the like) and position detection means 31E (encoder or the like) as advance / retreat movement means.
The control means 40 outputs a control signal to the drive means 31M based on the detection signal from the position detection means 31E according to the machining data, and in a direction intersecting (for example, orthogonal) to the workpiece rotation axis in the machining means T with respect to the workpiece W. Identify the location.
Since the advance / retreat table 31 does not move in a direction parallel to the workpiece rotation axis, the shape of the bed 2 is “inverted T-shaped” as shown in FIG. 1, so that the conventional processing apparatus shown in FIG. In contrast, the bed 2 can be reduced in size and weight. Compared with the conventional processing apparatus shown in FIG. 4B, since the slide table TB having a relatively large shape is eliminated, the conventional processing apparatus shown in FIG. 4B is also reduced in size and weight. Is possible.
Further, the control means 40 outputs a drive signal to the drive means TM to drive the machining means T (in this case, the grindstone that is the machining means is rotated).

The pair of workpiece support devices 10 and 20 are provided on the bed 2, support the workpiece W from both ends, and can rotate the workpiece W around a workpiece rotation axis connecting the support portions at both ends.
The work support devices 10 and 20 include housing parts 11 and 21 fixed to the bed 2 and slide parts 12 and 22 that can reciprocate in the direction parallel to the work rotation axis with respect to the housing parts 11 and 21. Further, engagement support portions 13 and 23 are provided which are arranged on the slide portions 12 and 22 and are formed of a center for rotatably supporting the workpiece W around the workpiece rotation axis.
FIG. 2A shows a schematic plan view (partial cross-sectional view) of the workpiece support device 20, and FIG. 2B shows a schematic right side view of the workpiece support device 20.
As shown in FIG. 2B, the housing portion 21 has a locking portion 21N locked to the bed 2 and is fixed to the bed 2 by a fixing member C and a bolt B.

The slide unit 12 is provided with drive means 12M (servo motor or the like) and position detection means 12E (encoder or the like) as slide movement means. Similarly, the slide portion 22 is also provided with a drive means 22M and a position detection means 22E as slide movement means.
The control means 40 outputs a control signal to the drive means 12M and 22M based on the detection signals from the position detection means 12E and 22E according to the machining data, and in the direction parallel to the workpiece rotation axis of the workpiece W with respect to the machining means T. Specify the position (position).
As shown in FIG. 2A, the driving means 22M is fixed to the housing portion 21, and rotates the screw shaft 22S supported by the bearing 22B. The screw shaft 22S is screwed into a nut 22N connected to the slide portion 22 via a connecting member 22R. Thereby, when the drive means 22M rotates the screw shaft 22S, the nut 22N and the slide portion 22 change in the X-axis direction (slide direction).
The driving means 12M and 22M are controlled in synchronization.

The engaging support portion 13 is provided with a driving means 13M (servo motor or the like) and a position detection means 13E (encoder or the like) as rotating means. Similarly, the engaging support portion 23 is also provided with a driving means 23M and a position detecting means 23E as rotating means.
The control means 40 outputs a control signal to the drive means 13M and 23M based on the detection signals from the position detection means 13E and 23E according to the machining data, and specifies (positions) the rotation angle of the workpiece W.
As shown in FIG. 2A, the driving means 23M is fixed on the rear end side of the slide portion 22 (on the side opposite to the side that supports the workpiece W) and coaxially with the engagement support portion 23. The tailstock shaft 23S received by the bearing 23B is rotated. On the opposite side of the tailstock shaft 23S to the drive means 23M, an engagement support portion 23 is provided which is a center for supporting the workpiece W. As a result, when the driving means 23M rotates the tailstock shaft 23S (the engagement support portion 13 is also rotated at the same time), the work W supported (clamped) by the engagement support portion 23 and the engagement support portion 13 is held. The engagement support portions 13 and 23 can be rotated by the frictional force.
The driving means 13M and 23M are controlled synchronously.
Since the driving means 23M is arranged coaxially with the engagement support portion 23 and does not pass through a transmission member such as a gear or a belt, the occurrence of errors due to backlash or the like can be further reduced.
As described above, the control means 40 controls the relative position between the workpiece W and the machining means T (the contact point between the machining means T and the workpiece W) according to the inputted machining data.

● [Arrangement of measuring means S and shaping means TR (FIG. 3)]
By controlling the relative position between the workpiece W and the machining means T by the control means 40, the workpiece W can be finished to a target dimension without using the measuring means S. However, it is possible to finish the workpiece W with higher accuracy by actually measuring the dimension of the machining portion of the workpiece W (in this case, the diameter of the machining portion) using the measuring means S.
The measuring means S is fixed on the bed 2 so that the processing means T and the measuring means S are opposed to each other across the workpiece rotation axis. Since the processing means T does not move in a direction parallel to the workpiece rotation axis, the measurement means S may be fixed on a line (on the alternate long and short dash line in FIG. 3) perpendicular to the workpiece rotation axis passing through the processing means T.
Note that the control means 40 can recognize the dimension of the machining location based on the detection signal from the detection unit SA of the measurement means S.

In the conventional processing apparatus shown in FIG. 4A, the measuring means S cannot be fixed on the bed 2 because the processing means T can move in a direction parallel to the workpiece rotation axis. In such a conventional processing apparatus, the measuring means S is configured to be fixed to the advance / retreat table 31 so as to largely straddle the processing means T, or the slide direction and the slide amount of the processing means T are the same. The measuring means S is configured to slide on the bed 2 by the sliding amount. Both are complex in construction and can be error prone.
Further, in the conventional processing apparatus shown in FIG. 4B, the measuring means S can be fixed on the bed 2, but interference with the slide table TB must be avoided. Since the distance to the measurement location is relatively long, the error may increase.
On the other hand, in the present embodiment shown in FIG. 3, the measuring means S can be fixed on the bed 2 and can be fixed at a position closer to the machining location (that is, the workpiece W), so the configuration is simple. Moreover, since the distance from the fixed position to the bed 2 to the measurement location is relatively short, the error can be further suppressed.

In addition, it is convenient to prepare a shaping device TR for shaping the shape of the machining device T in the machining device 1. As the shaping means TR, for example, a disk-like truer is rotated and the machining means T is ground and shaped. In the conventional processing apparatus, the shaping means TR includes a dedicated drive means (motor or the like). However, in the processing apparatus 1 described in the present embodiment, the engagement support portion 13 that rotates the workpiece W is coaxial. And fixed to the engagement support portion 13. Thereby, the driving means for rotating the shaping means TR and the driving means 13M for rotating the engagement support portion 13 can be used in a convenient manner.
The shaping means TR may be fixed on the engagement support portion 23 on the same axis as the engagement support portion 23. Thus, the shaping means TR is provided in at least one of the engagement support portion 13 and the engagement support portion 23 of the workpiece support devices 10 and 20. When the processing means T is shaped using the shaping means TR, the engagement support portions 13 and 23 are rotated in synchronization, and the slide portions 12 and 22 are slid in synchronization (through the processing means T to the workpiece rotation axis). The position of the shaping means TR is slid on an orthogonal line (on the chain line in FIG. 3).
Thereby, the shaping means TR can be configured with a smaller number of parts.

  The processing apparatus 1 of the present invention is not limited to the configuration, structure, shape, operation, and the like described in the present embodiment, and various modifications, additions, and deletions can be made without changing the gist of the present invention.

It is a top view explaining the schematic structure in one embodiment of processing device 1 of the present invention. FIG. 2 is a schematic plan view (partially sectional view) of the workpiece support device 20 and a schematic right side view of the workpiece support device 20. It is a figure explaining arrangement | positioning of the measurement means S and the shaping means TR. It is a figure explaining the conventional processing apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Processing apparatus 2 Bed 10, 20 Work support apparatus 11, 21 Housing 12, 22 Slide part 12M, 22M Drive means 12E, 22E Position detection means 22S Screw shaft 22N Nut 22R Connecting member 13, 23 Engagement support part 13M, 23M Drive Means 13E, 23E Position detection means 30 Processing table 31 Advance / retreat table 32 Intermediate table TB Slide table 31M, 32M, TBM Drive means 31E, 32E, TBE Position detection means T Processing means TM Drive means 40 Control means S Measurement means SA Detector TR Shaping means W Work

Claims (4)

Bed and
A pair of work support devices provided on the bed, for supporting the work from both ends, and capable of rotationally driving the work around a rotation axis connecting the support portions at both ends;
A working table provided on the bed and capable of moving back and forth in a direction intersecting the rotation axis;
A processing device mounted on the processing table and provided with processing means for processing the workpiece,
The workpiece support device is:
A housing part fixed to the bed;
A slide part capable of reciprocating in a direction parallel to the rotation axis with respect to the housing part;
An engagement support portion that is disposed on the slide portion and supports the workpiece rotatably about the rotation axis;
A processing apparatus characterized by that. The processing apparatus according to claim 1,
According to the input machining data, comprising a control means for controlling the relative position between the workpiece and the machining means,
The workpiece support device includes a slide movement unit that reciprocates the slide unit, and a rotation unit that rotates the workpiece by the engagement support unit.
The processing table includes an advancing / retreating means for performing the advancing / retreating movement,
The control means includes
Recognizing the machining location of the workpiece based on the machining data,
According to the recognized machining location, the slide moving means is controlled to identify the position of the work in the direction parallel to the rotation axis with respect to the working means, and the advance / retreat moving means is controlled to control the work. Identify the position in the direction intersecting the rotation axis in the processing means,
A processing apparatus characterized by that. The processing apparatus according to claim 1 or 2,
Comprising a measuring means for measuring a machining point in the workpiece,
The measuring means is fixed to the bed so that the processing means and the measuring means face each other across the rotation axis;
A processing apparatus characterized by that. It is a processing device in any one of Claims 1-3,
The engaging support part of at least one work support device is provided with a shaping means for shaping a processing part in contact with the work in the processing means,
A processing apparatus characterized by that.

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