CN106881653B

CN106881653B - Workbench traversing type grinding machine

Info

Publication number: CN106881653B
Application number: CN201611145189.9A
Authority: CN
Inventors: 山口智史; 牧内明
Original assignee: JTEKT Corp
Current assignee: JTEKT Corp
Priority date: 2015-12-15
Filing date: 2016-12-13
Publication date: 2020-08-04
Anticipated expiration: 2036-12-13
Also published as: JP2017109258A; CN106881653A; JP6657905B2; DE102016124185A1

Abstract

A table traverse type grinding machine (1) is provided with a bed (10), a table (20), a headstock (30), a wheel head (40), a grinding wheel (G), a processing device (50) attached to the bed (10), a support member (60) for supporting a dimension measuring device (51) on the bed (10), and a connecting member (80), wherein the support member (60) is disposed so that a part of the connecting member (80) can move in a space where a first leg (61) and a second leg (62) face each other.

Description

Workbench traversing type grinding machine

Technical Field

The present invention relates to a traverse type grinding machine.

Background

Conventionally, there is a wheel slide traversing type grinding machine in which a wheel slide is moved in an axial direction (Z-axis direction) of a workpiece W on the grinding machine to perform grinding processing at different positions in the axial direction of the workpiece W. For example, refer to Japanese patent application laid-open No. 2007-152534. As another type of grinding machine, there is a traverse table type grinding machine in which a table provided with a spindle head is made to be capable of reciprocating in the Z-axis direction on a bed, and grinding work at different positions in the axial direction of a workpiece W is performed by moving the table to move the workpiece W supported by the spindle head. For example, refer to Japanese patent application laid-open No. 2008-161961.

The grinding machine described above is provided with a dimension control device (processing device) for grinding the workpiece W and measuring the outer diameter of the workpiece W at the same time. Then, the machining is stopped at the time when the measured outer diameter of the workpiece W reaches the desired dimension, thereby obtaining a highly accurate machining result. In this case, in the grinding wheel base traversing type grinding machine described in jp 2007-152534 a, the size control device needs to be moved together with the grinding wheel base, and the support portion that supports the size control device needs to be fixed to the grinding wheel base. In this case, the support portion extends from the wheel head side to the opposite side of the wheel head (the front side of the grinding machine) across the workpiece W, and the dimension control device is fixed to the tip end portion of the extended support portion. This enables the outer diameter of the workpiece W to be measured simultaneously with the grinding of the grinding wheel.

In the table traversing type grinding machine described in japanese patent application laid-open No. 2008-161961, the wheel head does not move outward in the direction of cutting into the workpiece W (X-axis direction). Therefore, the support portion for supporting the size control device is fixed to the bed on the front side of the table, and is arranged to face the grinding wheel so as to always sandwich the table. This enables the outer diameter of the workpiece W to be measured simultaneously with the grinding of the grinding wheel. In this way, in the table traversing type grinding machine, the support portion of the size control device can be directly fixed to the bed. Therefore, the length of the support portion of the size control device can be made relatively short with respect to the length of the support portion of the size control device in the wheel slide traversing type grinding machine, so that the moment generated at the position of the size control device with respect to the support portion can be made small, and further, the rigidity of the support portion can be easily ensured.

However, in order to operate the respective devices (control motors, cylinders, hydraulic cylinders, and the like) included in the headstock and the tailstock, electric wires, hydraulic cylinder pipes, air pipes (these are collectively referred to as connection members), and the like are required. In the table traversing type grinding machine described in japanese patent application laid-open No. 2008-161961, since the headstock and the tailstock are provided on the movable table, the connecting member is disposed with play so as to be movable following the movement of the table or the respective devices. Generally, a cable drag chain (ケーブルベヤ: registered trademark) is used, which houses the connection members.

However, in order to move these connecting members, the size of the space to be secured becomes very large. Therefore, conventionally, the connecting member is often disposed at a position adjacent to the wheel head, i.e., on the back side of the table, for example, in order to facilitate mounting. Further, with such arrangement of the connecting member, other members that cannot be mounted on the periphery of the wheel head may be arranged on the bed on the front side of the table (on the side opposite to the side of the wheel head with respect to the table).

However, in order to operate the headstock and replace the workpiece W, the operator has a restriction that the depth of the table on the front side cannot be increased too much, and therefore, the space for disposing the support portion for supporting the dimension control device is restricted, and in the restricted space, for example, the support portion is formed in an inverted L shape in which a plate-shaped metal plate is erected on the bed and is bent upward.

Further, in the grinding machine, a vibration damping device, a workpiece carrying-in/out device, and the like may be disposed in addition to the size control device on the front side of the table. The same disadvantages are also caused in processing apparatuses other than the size control apparatus such as the vibration stopper and the loading/unloading apparatus.

Disclosure of Invention

An object of the present invention is to provide a traverse type grinding machine having a highly rigid support portion for supporting a processing device such as a size control device on a bed on the front side of a table.

A table traversing grinding machine according to an aspect of the present invention includes: a bed body; a table that is provided on the bed and reciprocates relative to the bed; a headstock provided on the table and rotatably supporting a workpiece; a wheel head provided on the bed and reciprocating in a direction orthogonal to a moving direction of the table with respect to the bed; a grinding wheel rotatably supported by the grinding wheel base; a processing device that is attached to the bed and performs a predetermined process on the workpiece; a support member for supporting the processing apparatus on the bed; and a connection member that is a flexible wiring or piping that is disposed on the opposite side of the grinding wheel with respect to the table, has one end connected to the bed, has the other end connected to the table or a member that moves together with the table, and deforms in accordance with movement of the table with respect to the bed, wherein the support member includes: a first leg portion arranged on the opposite side of the grinding wheel with respect to the table and erected on the bed; a second leg portion vertically provided between the first leg portion on the bed and the table; and a connecting member that connects an upper end of the first leg and an upper end of the second leg to mount the processing apparatus, wherein the first leg and the second leg are arranged such that a part of the connecting member is movable in a space where the first leg and the second leg face each other.

Thus, the support member is formed in a gate shape. Therefore, the support member can be more easily provided with higher rigidity than a conventional support member formed in a cantilever manner. As a result, a stable operation result of the processing apparatus is obtained. However, the space is enlarged by only forming the support member in a gate shape.

Therefore, the space in which the first leg and the second leg of the support member face each other is used as a region in which the connection member moves. Therefore, the rigidity of the support member can be ensured without increasing the depth of the table in the near side. Further, by disposing the connecting member on the front side of the table, it is possible to dispose other devices on the periphery of the wheel head and the like. As a result, miniaturization of the grinding machine is achieved. Moreover, the workability of the workpiece and the spindle is not impaired by an operator standing on the front side of the table.

Drawings

The above and other features and advantages of the present invention will become more apparent from the following detailed description of preferred embodiments thereof, taken in conjunction with the accompanying drawings, in which like reference characters refer to like elements, and in which:

fig. 1 is an overall configuration diagram of a table traversing type grinding machine as an embodiment of the present invention, as viewed from the top side.

Fig. 2 is an overall configuration diagram of a table traversing type grinding machine (excluding a grinding wheel base) as an embodiment of the present invention, as viewed from the front side.

Fig. 3 is a view in sagittal section of III-III of fig. 2.

Fig. 4 is a partially enlarged view of fig. 2 for explaining the arrangement of the cable housing member.

Fig. 5 is a diagram illustrating a modification of the processing apparatus.

Detailed Description

Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. The grinding machine of this embodiment is a table traversing type grinding machine (hereinafter, simply referred to as a grinding machine 1). As shown in fig. 1 and 2, the grinding machine 1 includes a bed 10 as a base, a table 20, a headstock 30, a wheel head 40, a grinding wheel G, a processing device 50, a support member 60 for supporting the processing device 50, a control device 70, a connection member 80 for connecting the control device 70 and various devices such as a motor, and a cable housing member 90 for housing the connection member 80. The cable housing member 90 is also referred to as a cable drag chain (ケーブルベヤ: registered trademark) hereinafter.

In the following description, for convenience of description, the control device 70, the connection member 80, and the cable housing member 90 will be first described in a simple manner. In the present embodiment, the control device 70 includes a first control device 71 and a second control device 72. The first control device 71 and the second control device 72 are fixedly disposed on the left and right sides of the bed 10 of the grinding machine 1 in fig. 1.

The first control device 71 is a control device that mainly controls each device (a servo motor 30a, a main shaft servo motor 31a, and the like, which will be described later) related to the headstock 30 and the main shaft 31. The second control device 72 is a control device that mainly controls the devices (the tailstock servo motor 32a and the like) related to the tailstock 32.

The connection member 80 is, for example, a flexible wiring for connecting the control device 70 (the first control device 71 and the second control device 72) fixed to the bed 10 to the respective devices described above, or a pipe for connecting a power source such as a cylinder or a hydraulic cylinder to the respective devices via the bed 10. In the present embodiment, the connection member 80 includes a first connection member 81 and a second connection member 82.

The first connection member 81 is an electric wire (corresponding to a wiring) for connecting the first controller 71 to each of the above-described devices. The first connection member 81 is also a pipe for connecting each device controlled by the first control device 71 to a power source such as a cylinder or a hydraulic cylinder. The second connection member 82 is an electric wire (corresponding to a wiring) for connecting the second control device 72 to each device. The second connecting member 82 is also a pipe for connecting each device controlled by the second control device 72 to a power source such as an air cylinder or a hydraulic cylinder. In this embodiment, the piping is not shown.

The cable drag chain 90 (cable housing member 90) is a member that houses the connection member 80 (first connection member 81 and second connection member 82). As shown in fig. 3, the cable drag chain 90 is formed of a flexible tubular member having a rectangular cross-sectional shape. The cable drag chain 90 includes a first cable drag chain 91 and a second cable drag chain 92. The first cable drag chain 91 mainly accommodates the first connection member 81 in a rectangular cross section. The second cable drag chain 92 accommodates the second link member 82 in the rectangular cross section.

The table 20 is provided on the bed 10. The table 20 is reciprocated in the Z-axis direction relative to the bed 10 by driving the screw feeder 21. In this case, the Z-axis direction is a direction parallel to the rotation axis direction of the main shaft 31. The screw feeding device 21 includes: a feed screw 22 having both ends pivotally supported on the bed 10; a feed motor 23 fixed to the bed 10 and driving and rotating the feed screw 22; and a ball nut 21a provided on the table 20 and threadedly engaged with the feed screw 22.

A headstock 30 for supporting a main shaft 31 is provided on the table 20. When the servo motor 30a (device) fixed to the table 20 rotates to drive the rough screw feeder, the spindle head 30 is reciprocated in the Z-axis direction relative to the table 20. The servo motor 30a is connected to the first controller 71 (controller 70) via a first connection member 81 (connection member 80), and is controlled to rotate by the first controller 71. In this case, the first connection member 81 is a flexible electric wire.

The main spindle 31 is rotated by a main spindle servomotor 31a fixed to the headstock 30. The main shaft servomotor 31a is connected to the first controller 71 (controller 70) via a first connection member 81 (connection member 80), and is controlled to rotate by the first controller 71. In this case, the first connection member 81 is a flexible electric wire.

In fig. 1 and 2, a tailstock 32 is provided on the right side of the table 20. The center of the rotation axis of the spindle 31 is opposed to the center of the tailstock 32, and the center axes are coaxially arranged. When the rough screw feeder is driven by rotation of a tailstock servo motor 32a (device) fixed to the table 20, the tailstock 32 is moved relative to the table 20 in the Z-axis direction.

The tailstock servo motor 32a is connected to the second control device 72 (the control device 70) via a second connection member 82 (the connection member 80). At this time, the second connecting member 82 is a flexible electric wire. The headstock 30 and the tailstock 32 are moved in a direction to approach each other by the control of the control devices 71 and 72, and both end surfaces of the cylindrical workpiece W are sandwiched between the center (not shown) of the axis of the tailstock 32 and the center (not shown) of the spindle 31 supported by the headstock 30, thereby supporting the workpiece W. Then, the workpiece W supported at both ends by the spindle 31 and the tailstock 32 rotates around the rotation axis integrally with the spindle 31 by the rotation of the spindle 31.

The wheel head 40 is provided on the bed 10 and includes a grinding wheel G that can be driven to rotate. The wheel slide 40 reciprocates in the X-axis direction (vertical direction in fig. 1) which is a direction orthogonal to the moving direction (Z-axis direction) of the table 20 with respect to the bed 10. In the wheel slide 40, a wheel slide servomotor 40a fixed to the bed 10 is connected to a controller 70 (a first controller 71 or a second controller 72) fixed to the bed 10 via an unillustrated electric wire.

The grinding wheel head 40 can be advanced and retracted in the X-axis direction by operating the feed screw mechanism, not shown, by forward and reverse rotation of the grinding wheel head servomotor 40a under the control of the first control device 71. By reciprocating the wheel carrier 40 in the X-axis direction, the grinding wheel G can cut into (grind) the workpiece W, and after grinding of the workpiece W, the grinding wheel G can be retracted from the grinding point.

In the wheel head 40, the rotation of the grinding wheel G is controlled by the rotation operation of the grinding wheel servomotor 40b fixed to the wheel head 40. In the present embodiment, the grinding wheel servomotor 40b and the control device 70 (the first control device 71 or the second control device 72) fixed to the bed 10 are connected via an unillustrated electric wire. Further, since the electric wire connected to the grinding wheel servomotor 40b moves in accordance with the movement of the grinding wheel holder 40, the electric wire is wired so as to have flexibility and have a slight margin in length.

Next, aligning the twoThe processing device 50 will be explained. The processing apparatus 50 is an apparatus that performs a predetermined process on the workpiece W. As shown in fig. 1 to 3, the processing apparatus 50 is attached to the bed 10 via a support member 60. Various devices can be applied as the processing device 50. For example, in the present embodiment, the processing device 50 is provided with the outer diameter of the grinding target portion Q of the workpiece W ground by the grinding wheel G

The dimension measuring device 51 (corresponding to a measuring device) which is a so-called dimension control device for performing measurement (corresponding to a dimension). Further, as in the present embodiment, the outer diameter of the portion Q to be ground of the workpiece W may be measured simultaneously with the grinding of the workpiece W by the grinding wheel G

Further, the outer diameter of the workpiece W may be measured after the grinding of the workpiece W is completed

The sizing device 51 is a known technique. Therefore, detailed description is omitted and only a brief description is given. Fig. 3 shows an example of the configuration of the sizing device 51 (processing device 50). The dimension measuring device 51 includes a pair of contact pins 51a that contact the outer periphery of the workpiece W from both sides, and a displacement detector 51b such as a differential transformer that converts the mechanical displacement of the contact pins 51a into an electrical signal. When the pair of styli 51a advance in the direction of the workpiece W and engage with the portion Q to be ground, which is a measurement portion of the workpiece W, the degree of opening of the styli 51a is detected by the displacement detector 51b, and the outer diameter of the portion Q to be ground is measured

The signal line of the size measuring apparatus 51 is connected to the control apparatus 70 (the first control apparatus 71 or the second control apparatus 72), and signals are transmitted and received to and from the control apparatus 70 via the signal line. Further, any mechanism may be used as long as the pair of contact pins 51a are advanced in the direction of the workpiece W or retracted in order to move them away from the workpiece W. For example, the pair of contact pins 51a may be advanced and retracted by supplying or cutting off power such as hydraulic pressure, a motor, or air. Further, hydraulic pressure, air, and the like are connected to the respective devices from respective power supply sources not shown through the bed 10.

The processing apparatus 50 is not limited to the dimension measuring apparatus 51, and may be any apparatus that performs a predetermined process on the workpiece W. For example, the processing apparatus 50 may be configured not to be applied to the outer diameter of the workpiece W

And a measuring device (not shown) for measuring only a predetermined end face position of the workpiece W.

The treatment device 50 may be a vibration damping device (not shown) for suppressing vibration around the axis during grinding of the workpiece W, which is generally known under the name of a holder, or may be a coolant device for supplying a coolant to a grinding point during grinding. The processing device 50 may be a carrying-out device (not shown) for carrying out the ground workpiece W. Although not shown, the processing apparatus 50 may be an apparatus that performs a predetermined process on the workpiece W, and may have any shape and structure.

As described above, the dimension measuring device 51 (the processing device 50) is supported by the bed 10 via the support member 60 (see fig. 1 to 3). To measure the outer diameter of a workpiece W by a dimension measuring device 51 having a predetermined weight

The measurement can be performed with good accuracy, and the support member 60 needs to be a stable structure capable of stably supporting the dimension measuring device 51.

Therefore, as shown in fig. 3, the support member 60 includes a first leg portion 61, a second leg portion 62, and a connecting member 63, each of which is formed in a plate shape. As shown in fig. 3, the lower surface of the bent portion at the lower end of the first leg portion 61 is fixedly set upright on the bed 10 by, for example, welding or the like, on the side opposite to the grinding wheel G with respect to the table 20. Specifically, in fig. 1, the first leg 61 is erected on a lower end portion of the bed 10. In this case, the first leg portion 61 is disposed such that the flat surface portion of the plate-like member is substantially parallel to the Z-axis direction.

As shown in fig. 1 and 3, the second leg 62 is erected on the bed 10 between the first leg 61 and the table 20. The second leg portion 62 and the first leg portion 61 face each other in a planar portion. The lower surface of the bent portion at the lower end is fixedly erected on the bed 10 by welding or the like, for example, so that the opposing flat surface portions are substantially parallel to each other. At this time, in the facing space between the first leg portion 61 and the second leg portion 62, as shown in fig. 3, a part of the cable housing member 90 (the first cable drag chain 91 and the second cable drag chain 92) housing the above-described link member 80 (the first link member 81 and the second link member 82) is formed to have a width that can move without interfering with the first leg portion 61 and the second leg portion 62. Further, in the cable housing member 90, the bent portions V1, V2 bent in a U-shape are reciprocated in the Z-axis direction at any time in the facing space between the first leg portion 61 and the second leg portion 62 in accordance with the state of movement of the table 20 during operation of the grinding machine 1. The cable housing member 90 will be described in detail below.

As shown in fig. 3, the coupling member 63 is a plate-shaped member having a flat surface portion, and the coupling member 63 is formed by coupling the upper end of the first leg portion 61 and the upper end of the second leg portion 62 by welding or the like, for example, and the dimension measuring device 51 (processing device 50) is fixedly attached to the upper surface of the coupling member 63, specifically, the dimension measuring device 51 is attached such that the pair of contact pins 51a face in the direction of the workpiece W, and as shown in fig. 2, the upper surface of the coupling member 63 is provided below the rotation axis C L of the workpiece W supported by the spindle 31 (spindle stock 30) in the present embodiment.

At this time, in the space surrounded by the first leg portion 61, the second leg portion 62, and the connecting member 63, a part of the cable accommodating member 90 (the first cable drag chain 91 and the second cable drag chain 92) accommodating the connecting member 80 (the first connecting member 81 and the second connecting member 82) can move in the space without interfering with the inner surface of the space.

The control device 70 includes a first control device 71 and a second control device 72 on the left and right sides of the bed 10 of the grinding machine 1 in fig. 1 and 2. The first control device 71 mainly controls the devices (the servo motor 30a, the main shaft servo motor 31a, and the like) related to the headstock 30 and the main shaft 31. The second control device 72 mainly controls the devices (the tailstock servo motor 32a and the like) related to the tailstock 32.

The above is merely an example, and the devices controlled by the first control device 71 and the second control device 72 are not limited to the above description. Further, instead of controlling each device by the two control devices 71 and 72, all the devices may be controlled by one control device, for example. Each device may be operated by a power source other than electric power such as hydraulic pressure and air.

As described above, the connection member 80 is a flexible wire or pipe that connects the control device 70 (the first control device 71 and the second control device 72) fixed to the bed 10 or the power sources to the respective devices described above. Here, the description will be mainly given with the connection member 80 being a wire.

As shown in fig. 1, one end of the connection member 80 is connected to the first control device 71 or the second control device 72 fixed to the bed 10. A part of the connecting member 80 is disposed on the side opposite to the grinding wheel G side with respect to the table 20, and the other end is connected to the table 20 or each device (corresponding to a member) moving together with the table 20. That is, the connection member 80 connects the control device 70 to each apparatus moving together with the table 20.

However, the other end of the connection member 80 may be connected to the

terminals

24 and 25 fixed to the table 20, and then connected to each device through an unillustrated wiring inside the table 20 connected to the

terminals

24 and 25. The control device 70 may be directly connected to each device (corresponding to a component). In the present embodiment, as shown in fig. 1 and 2, the other end of the connecting member 80 is connected to the

conductive terminals

24 and 25 provided on the stage 20, and is electrically connected to the devices via the

terminals

24 and 25.

The connection member 80 (the first connection member 81 and the second connection member 82) is disposed so as to be bent substantially in a U shape and have a length having a margin, for example, so as to absorb the movement of the connection member 80 (the first connection member 81 and the second connection member 82) that is displaced by the relative movement between the table 20 and the bed 10 (see arrow Ar1 in fig. 1).

Further, as described above, the connection member 80 is not only an electric wire. The connecting member 80 may be a flexible pipe for supplying power from each power source to each device operated by a power source other than electricity such as hydraulic pressure and air.

Next, as shown in fig. 3, the cable drag chain (cable housing member) 90 is formed of a flexible cylindrical member having a rectangular cross-sectional shape. As shown in fig. 1 and 2, the cable drag chain 90 includes a first cable drag chain 91 and a second cable drag chain 92. The first cable drag chain 91 accommodates the first connection member 81 in the rectangular cross section. The second cable drag chain 92 accommodates the second link member 82 in the rectangular cross section.

When viewed from the opposite side of the table 20 to the grinding wheel G, the first cable drag chain 91 and the second cable drag chain 92 are each arranged in a U shape that opens in the moving direction of the table 20. Specifically, the first cable drag chain 91 is disposed on the left side in fig. 1 and 2, and is disposed in a U-shape (see fig. 2) that opens to the left (corresponding to one side in the moving direction of the table 20). The second cable drag chain 92 is disposed on the other side in the moving direction of the table 20 (rightward in fig. 1 and 2), and is disposed in a U shape (see fig. 2) that opens rightward (corresponding to the other side in the moving direction of the table 20).

As shown in fig. 4, the U-shaped bent portions V1 and V2 of the first and second cable drag chains 91 and 92 are arranged such that the apexes T1 and T2 of the U-shaped bent portions face each other. The U-shaped bent portions V1, V2 of the first and second cable drag chains 91, 92 are both disposed so as to be movable in the facing space formed between the first leg portion 61 and the second leg portion 62 of the support member 60 (see fig. 3).

The first cable drag chain 91 and the second cable drag chain 92 are fixed to the bed 10 at one

end

91a and 92a of the respective U-shaped ends by, for example, bolts or the like not shown. The U-shaped

other end portions

91b and 92b of the first cable drag chain 91 and the second cable drag chain 92 are fixed to the

terminals

24 and 25 provided on the table 20 (or a member moving together with the table 20) by, for example, bolts (not shown).

In this case, the U-shaped one

end portions

91a and 92a of the first and second cable drag chains 91 and 92 are disposed below the U-shaped

other end portions

91b and 92 b. As shown in fig. 4, the U-shaped upper edges Umax1 and Umax2 of the first and second cable links 91 and 92 are arranged to be lower than the lower surface 63a of the connecting member 63 of the support member 60.

In the grinding machine 1 configured as described above, when the table 20 is moved in the Z-axis direction with respect to the bed 10 and the grinding of the workpiece W is performed by the grinding wheel G, the first and second cable drag chains 91 and 92 and the connection member 80 (electric wire and pipe) inserted therein are also moved in accordance with the relative movement between the table 20 and the bed 10.

That is, as shown by the two-dot chain line in fig. 4, in accordance with the relative movement between the table 20 and the bed 10, the positions of the respective bent portions V1, V2 of the first and second cable drag chains 91, 92 and the link member 80 (the first link member 81, the second link member 82) bent in the U-shape are curled and deformed in the same direction (rightward in fig. 4) without interfering with each other. A part of the support member 60 passes through a space between the first leg 61, the second leg 62, and the connecting member 63 and moves in the Z-axis direction.

At this time, since the moving direction and the moving amount of the respective bent portions V1, V2 are the same, the distance L m between the apexes T1, T2 of the respective bent portions V1, V2 is always kept constant while repeating the movement corresponding to the reciprocating movement of the table 20, and therefore, the connection member 80 (the first connection member 81, the second connection member 82) housed inside the first and second cable drag chains 91, 92 does not generate an unreasonable operation or an unreasonable force, and thus, there is no possibility that the connection member 80 is cut off by the relative movement of the table 20 and the bed 10.

Then, each time grinding of each ground portion Q of the workpiece W is performed by the grinding wheel G, the dimension measuring device 51 (processing device 50) fixed to the bed 10 at a position facing the grinding wheel G with respect to the table 20 via the support member 60 is operated. Specifically, the pair of styli 51a are advanced in the direction of the workpiece W by the control of the control device 70. The power and the advancing mechanism of the stylus 51a at this time may be arbitrary.

When the pair of contact pins 51a clamp the workpiece W and engage with the ground portion Q, the contact pins 51a are opened. The degree of opening of the stylus 51a is detected by the displacement detector 51b, and the outside diameter of the portion Q to be ground is calculated based on the degree of opening by an unillustrated calculating unit of the control device 70

If the calculated outer diameter

When the desired value is reached, the control device 70 stops grinding of the workpiece W by the grinding wheel G. After that, the control device 70 controls the pair of contact pins 51a to retreat to the initial positions.

At this time, the dimension measuring device 51 is supported by the bed 10 via the support member 60 at the position shown in fig. 1 and 2. As described above, the support member 60 is formed in a gate shape by the first leg portion 61, the second leg portion 62, and the connecting member 63. Therefore, the support member 60 can be said to be a structure that is stable as a base. The dimension measuring device 51 is fixed to the upper surface of the connecting member 63 of the firmly formed support member 60.

In the present embodiment, the dimension measuring device 51 (see fig. 3) is fixed to the coupling member 63 so as to be closer to the workpiece W so that the pair of contact pins 51a can easily reach the portion Q to be ground of the workpiece W. However, the support member 60 is formed in a gate shape and also has a second leg portion 62 on the workpiece W side. Therefore, the size measuring device 51 can be supported by the second leg 62. Therefore, the dimension measuring device 51 fixed to be biased toward the workpiece W can be stably held by the coupling member 63. The outer diameter of the workpiece W can be measured with high accuracy by the dimension measuring device 51.

According to the above embodiment, the table traversing grinding machine 1 includes: a bed 10; a table 20 that is provided on the bed 10 and reciprocates relative to the bed 10; a headstock 30 provided on the table 20 and rotatably supporting the workpiece W; a wheel slide 40 that is provided on the bed 10 and reciprocates in a direction orthogonal to a moving direction of the table 20 with respect to the bed 10; a grinding wheel G rotatably supported by the grinding wheel holder 40; a dimension measuring device 51 (corresponding to the processing device 50) which is attached to the bed 10 and measures the outer diameter of the workpiece W (relative to a predetermined process); a support member 60 for supporting the dimension measurement device 51 on the bed 10; and a connection member 80 (a first connection member 81 and a second connection member 82) which is disposed on the opposite side of the grinding wheel G with respect to the table 20, is connected to the bed 10 at one end and to the table 20 or a member which moves together with the table 20 at the other end, and is flexible wiring or piping which deforms in accordance with the movement of the table 20 with respect to the bed 10. The support member 60 includes: a first leg 61 disposed on the opposite side of the table 20 from the grinding wheel G and standing on the bed 10; a second leg 62 vertically provided on the bed 10 between the first leg 61 and the table 20; and a connecting member 63 for connecting the upper end of the first leg 61 and the upper end of the second leg 62, and to which the size measuring device 51 (processing device) is attached. The first leg 61 and the second leg 62 are disposed such that a part of the connection member 80 (the first connection member 81 and the second connection member 82) is movable in the space where the first leg 61 and the second leg 62 face each other.

Thus, the support member 60 is formed in a gate shape. Therefore, the support member 60 can more easily obtain higher rigidity than a conventional support member formed in a cantilever manner. As a result, a stable operation result of the size measuring device 51 (processing device 50) is obtained. However, the space is enlarged by only forming the support member in a gate shape.

Therefore, the space between the first leg 61 and the second leg 62 of the support member 60 is used as the movement region of the connection member 80 (the first connection member 81 and the second connection member 82). Therefore, the rigidity of the support member 60 can be ensured without increasing the depth of the table 20 on the near side. Further, by disposing the connecting member 80 on the front side of the table 20, other devices can be disposed around the wheel head 40. As a result, miniaturization of the grinding machine 1 is achieved. Moreover, the workability of the workpiece W and the main spindle 31 is not impaired by the worker H standing on the front side of the table 20.

Further, according to the above embodiment, the table traversing grinding machine 1 includes the wire housing member 90 (the first and second wire drag chains 91 and 92), the wire housing member 90 houses the link member 80 (the first link member 81 and the second link member 82), and is formed in a U shape, and the

portions

91a and 92a at one end of the U shape are connected to the bed 10, and the

portions

91b and 92b at the other end of the U shape are connected to the table 20 or a member that moves together with the table 20. The first leg 61 and the second leg 62 of the support member 60 are disposed such that the cable housing member 90 (the first and second cable links 91 and 92) can move in the space between the first leg 61 and the second leg 62.

Thus, the link member 80 (the first link member 81 and the second link member 82) can be stably moved in a state of being stored in the cable storage member 90 (the first and second cable links 91 and 92) and protected. Therefore, the wiring and the piping are not damaged by being caught by other members during movement.

Further, according to the above embodiment, the cable housing member 90 (the first and second cable links 91 and 92) is disposed in a U shape that opens in the moving direction of the table 20 when viewed from the opposite side of the grinding wheel G with respect to the table 20, the

portions

91a and 92a connected to the bed 10, which are the U-shaped one ends of the cable housing member 90 (the first and second cable links 91 and 92), are located below the U-shaped other ends, which are the

portions

91b and 92b connected to the table 20 or a member that moves together with the table, and the coupling member 63 of the support member 60 is provided at a position higher than the upper edge of the U shape. Thus, the cable housing member 90 (the first and second cable links 91 and 92) can move smoothly in the space between the first leg 61, the second leg 62, and the connecting member 63 of the support member 60 without interfering with the first leg 61, the second leg 62, and the connecting member 63.

Further, according to the above embodiment, the cable housing member 90 includes: a first cable housing member (first cable drag chain 91) disposed in a U shape that opens to one side (left side in fig. 1) in the moving direction of the table; and a second cable housing member (a second cable drag chain 92) which is positioned on the other side (the right side in fig. 1) of the moving direction of the table 20 with respect to the first cable housing member and is arranged in a U shape that opens toward the other side (the right side in fig. 1) of the moving direction of the table 20. The first leg 61 and the second leg 62 of the support member 60 are disposed such that the U-shaped bent portion V1 of the first cable accommodating member (the first cable drag chain 91) and the U-shaped bent portion V2 of the second cable accommodating member (the second cable drag chain 92) are movable in the space where the first leg 61 and the second leg 62 face each other.

In this way, even if the wiring or piping is distributed to the left and right (one and the other) in the moving direction of the table 20, the table traversing grinding machine 1 can be made compact by moving both the U-shaped bent portions V1, V2 of the left and right first and second cable drag chains 91, 92 in the facing space between the first leg portion 61 and the second leg portion 62 of the support member 60.

Further, according to the above embodiment, the coupling member 63 of the support member 60 is provided below the rotation axis of the workpiece W supported by the headstock 30. Thus, the outer diameter of the workpiece W can be easily measured by the pair of

styli

51a, 51a without mounting the dimension measuring device 51 attached to the upper surface of the coupling member 63 in an improper posture. Further, when the operator H standing in front of the support member 60 and the dimension measuring device 51 operates the spindle head 30, replaces the workpiece W, and the like, it is difficult for the operator H to perform work beyond the dimension measuring device 51. The connecting member 63 may be provided above the rotation axis of the workpiece W. This provides a sufficient effect in addition to workability with respect to the headstock 30 and the workpiece W.

Further, according to the above embodiment, the processing device 50 is the dimension measuring device 51 (measuring device) that measures the outer diameter (dimension) of the workpiece W ground by the grinding wheel G. By applying the dimension measuring device 51, which needs to measure the outer diameter dimension with high accuracy, as the processing device 50, the effect obtained is higher than that obtained when applying a vibration damping device as the processing device, for example.

In the above embodiment, the

portions

91a and 92a of the cable housing member 90 (the first and second cable drag chains 91 and 92) at one end of the U-shape, that is, at one end connected to the bed 10 are positioned below the

portions

91b and 92b at the other end of the U-shape, that is, at the other end connected to the table 20 or a member moving together with the table (see fig. 2 and 4). However, the present invention is not limited to this embodiment. One end and the other end of the U-shape of the cable housing member 90 may be provided on the same plane. That is, the cable housing member 90 may be U-shaped when viewed from above.

In the above embodiment, the cable housing member 90 and the connection member 80 housed in the cable housing member 90 include two of the first cable drag chain 91 (including the first connection member 81) and the second cable drag chain 92 (including the second connection member 82), but the present invention is not limited to this embodiment. The cable housing member 90 may include only one of the first cable drag chain 91 (including the first connection member 81) and the second cable drag chain 92 (including the second connection member 82). As an example, the tailstock may be manually operated, and the second cable drag chain 92 (including the second link member 82) may be removed.

In the above embodiment, the size measuring device 51 (processing device 50) is directly fixed to the connecting member 63 of the support member 60. However, the present invention is not limited to this embodiment, and the size measuring device 51 may be fixed to the connecting member 63 via a bracket 160 as shown in fig. 5 as a modified example. In this case, the size measuring device 51 and the carriage 160 are collectively referred to as the processing device 150. Thus, the processing device 50 can be easily disposed at a desired position. However, in this case, the bracket 160 is a cantilever support portion and needs to be provided in a stable shape that does not impair the processing apparatus 150.

In the above-described embodiment, the structures of the headstock 30, the spindle 31, the tailstock 32, and the like described above are not limited to those described above, and may be any structures. For example, the shafts of the main shaft 31 and the tailstock 32 may have a structure that extends and contracts by an air cylinder or a hydraulic cylinder. In this case, a power source of air or hydraulic pressure, the spindle 31, and the tailstock 32 are connected to each other through the bed 10 by pipes. The pipe on the main shaft 31 side is accommodated in the first cable drag chain 91 as the first connection member 81. The pipe on the tailstock 32 side is accommodated as the second connection member 82 in the second cable drag chain 92.

Claims

1. A traverse type grinding machine with a table, comprising:

a bed body;

a table that is provided on the bed and reciprocates relative to the bed;

a headstock provided on the table and rotatably supporting a workpiece;

a wheel head provided on the bed and reciprocating in a direction orthogonal to a moving direction of the table with respect to the bed;

a grinding wheel rotatably supported by the grinding wheel base;

a processing device that is attached to the bed and performs a predetermined process on the workpiece;

a support member for supporting the processing apparatus on the bed;

a connection member that is a flexible wiring or piping that is disposed on the opposite side of the grinding wheel with respect to the table, has one end connected to the bed, has the other end connected to the table or a member that moves together with the table, and deforms as the table moves with respect to the bed; and

a cable housing member formed in a U-shape, housing the connection member, one end of the U-shape being connected to the bed, the other end of the U-shape being connected to the table or a member moving together with the table,

wherein the support member is formed in a gate shape, and includes:

a first leg portion arranged on the opposite side of the grinding wheel with respect to the table and erected on the bed;

a second leg portion vertically provided between the first leg portion on the bed and the table; and

a connecting member for connecting an upper end of the first leg portion and an upper end of the second leg portion to mount the processing device on an upper surface,

the cable housing member includes:

a first cable housing member which is arranged in a U shape that opens to one side of the movement direction of the table; and

a second cable housing member which is positioned on the other side of the moving direction of the table with respect to the first cable housing member and is arranged in a U shape which is opened to the other side of the moving direction of the table,

the first leg and the second leg are disposed so that a part of the U-shaped bent portion of the first cable housing member and a part of the U-shaped bent portion of the second cable housing member are movable in a space where the first leg and the second leg are opposed to each other, the space being located below the processing device.

2. The table traversing-type grinding machine according to claim 1,

in the space opposed to the above-mentioned member,

the respective apexes of the curved portion of the first cable housing member and the curved portion of the second cable housing member are disposed so as to face each other with a predetermined distance in the moving direction of the table with respect to the bed,

when the table reciprocates relative to the bed, the vertexes move in a direction corresponding to a relative movement direction of the table relative to the bed while keeping a predetermined distance from each other.

3. The table traversing-type grinding machine according to claim 1,

one end of the U-shape of the first cable housing member and the second cable housing member, that is, a portion connected to the bed, is located below the other end of the U-shape, that is, a portion connected to the table or a member moving together with the table,

the connecting member is provided at a position higher than the upper edge of the U-shape.

4. The table traversing-type grinding machine according to claim 2,

5. The table traversing type grinding machine according to any one of claims 1 to 4,

the coupling member is provided below a rotation axis of the workpiece supported by the headstock.

6. The table traversing type grinding machine according to any one of claims 1 to 4,

the processing device is a measuring device for measuring a dimension of the workpiece ground by the grinding wheel.

7. The table traversing-type grinding machine according to claim 5,