JP2007296577A - Rest bar apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rest bar apparatus which can achieve reduction in operation load and quick work. <P>SOLUTION: The rest bar apparatus is equipped with a lateral slide saddle 2 moving along a guide shaft 7, a front-rear slide saddle 3, a front-rear movement adjusting stem 5 for moving the front-rear slide saddle on the lateral slide saddle in the front and rear direction, and a thrust means 6 interlocking with the front-rear movement adjusting stem 5, wherein the lateral slide saddle 2 has a split groove 2b having one end reaching the guide shaft 7 and the groove width capable of widening/narrowing. The thrust means 6 applies the thrust force received from the front-rear movement adjusting stem 5 to the lateral slide saddle in the direction narrowing the groove width of the split groove. The front-rear slide saddle 3 is fixed on the lateral slide saddle by the adjusting stem 5, and the lateral slide saddle is fixed on the guide shaft 7 by the thrust force applied to the thrust means 6. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a rest bar device.

As the rest bar device, for example, a “detachable rest bar device” described in Japanese Patent Application Laid-Open No. 2004-209493 has been proposed.
In this conventional example, a saddle that can be moved laterally along the guide shaft between the rest bar bodies and on which the roller guide is mounted is provided on the movable rest bar, and the guide shaft passes through the saddle, and the saddle is the saddle. A clearance between the saddle and the guide shaft can be reduced by a clamp hydraulic cylinder and a disc spring and fixed to the guide shaft, and parallel moving means for moving the saddle laterally is disposed. A screw shaft having a hydraulic motor, a worm and a worm wheel and penetrating the saddle is provided. In addition, the saddle is provided with a movable rest bar main body that can be moved back and forth in order to move back and forth through the movable rest bar, and the front and rear moving base can be moved by a hydraulic cylinder for forward and backward movement.
The lateral movement of the saddle is transmitted to the worm and worm wheel by the drive of the hydraulic motor, the worm wheel meshing with the screw shaft moves along the screw shaft, and the saddle moves to the guide shaft through this movement. The saddle is caused to follow the movement of the movable rest bar body by driving the hydraulic cylinder for forward and backward movement.
The use of the roller guide through the saddle will be described as follows: When the rod of the hydraulic cylinder for forward / backward movement is extended and the movable rest bar main body is advanced to the rolling mill side via the forward / backward movement mount, the saddle and roller guide The roller guide is also fixed by a fixed clamp.
As for the lateral movement of the saddle, the hydraulic motor is driven to horizontally move the saddle along the guide shaft, and the mounted roller guide is aligned with the hole shape of the rolling roll, and then the saddle is clamped with the saddle. The saddle is fixed in position by reducing the gap with the guide shaft.
JP 2004-209493 A

In the conventional example, the fixing work after the alignment by the forward / backward movement of the saddle and the fixing work after the alignment adjustment by the horizontal movement of the saddle are individually performed.
However, in each of the plurality of rest bar devices equipped with the guide devices necessary for rolling, it is necessary to improve the fixing work individually from the viewpoint of reducing the burden on the operator and shortening the work time. It was.
An object of the present invention is to provide a rest bar device that can reduce a work load and can perform a quick work.

A first feature of the present invention is a lateral slide saddle that is movable along a guide shaft in a direction orthogonal to the pass line direction, a front / rear slide saddle that is movable back and forth in the pass line direction, a saddle clamp means, There exists a movement drive means and a press means. The horizontal slide saddle is provided with a split groove having one end reaching the guide shaft and having a groove width that can be widened and narrowed, and the front and rear slide saddles are movably disposed on the horizontal slide saddle to guide the rolling material. The saddle clamp means can fix the guide device on the front / rear slide saddle and can be connected to the front / rear slide saddle, and the front / rear movement drive means includes the front / rear slide saddle. The pressing means applies a pressing force from the longitudinal movement driving means to the lateral slide saddle in the direction of narrowing the width of the split groove, and the longitudinal slide saddle is It is fixed on the lateral slide saddle by the forward / backward movement driving means, and the lateral slide saddle extends from the forward / backward movement driving means to the pressing means. It is fixed to the guide shaft by the pressure.
The second feature of the present invention is based on the first feature, and a forward / backward movement adjusting shaft comprising a screw shaft in which a forward / backward movement drive means is disposed in the forward / backward slide saddle, and a screw attached to the lateral slide saddle. The adjustment shaft for back-and-forth movement is inserted through the screw bearing in a screw-coupled state.
The third feature of the present invention is based on the premise of the first feature, wherein the forward / backward movement driving means includes a screw shaft that is attached to the lateral slide saddle, and is attached to the lateral slide saddle so as to be rotatable. A screw bearing, and one end side of the longitudinal movement adjusting shaft is inserted into the screw bearing and screwed together.
According to a fourth feature of the present invention, on the premise of any one of the first to third features, an engagement recess having a pressing means provided on the lateral slide saddle and forming an inclined surface on the inner surface, and The engaging portion is engageable with the concavity, and the engaging portion can be pressed in the direction of narrowing the groove width of the dividing groove with respect to the inclined surface.
According to a fifth feature of the present invention, on the premise of any one of the first to third features, an engaging protrusion provided on the lateral slide saddle and disposed opposite to each other with a split groove interposed therebetween, The engaging recess is provided on the front / rear slide saddle and can engage with both engaging projections. The engaging recess can hold both engaging projections in the direction in which the opposing surfaces of the split grooves are in close contact with each other. It is to be.

  According to the present invention, since the forward / backward movement driving means and the pressing means interlocking therewith are provided, the lateral slide saddle and the forward / backward slide saddle can be locked at the same time, eliminating the locking work for each individual and reducing the burden on the operator. This can speed up the work.

An embodiment of the present invention will be described with reference to FIGS.
A rest bar device 1 shown in FIG. 1 includes a lateral slide saddle 2, a front / rear slide saddle 3, a saddle clamp means 4, a forward / backward movement adjusting shaft 5 and a pressing means 6.

The lateral slide saddle 2 is movable by the lateral movement drive means 8 along the guide shaft 7 in a direction (lateral movement direction) orthogonal to the pass line direction (left-right direction in FIG. 1). A guide hole 2a is opened in the lateral slide saddle 2, and a guide shaft 7 is passed through the guide hole. The guide shaft 7 is passed between rest bar flanges 9 which are arranged to face each other. A guide bar 7a is attached to one side of the guide shaft 7 (left side in FIG. 1), and the lateral movement of the lateral slide saddle 2 is stabilized by this guide bar.
Further, as shown in FIG. 1, a split groove 2b is formed in the horizontal slide saddle 2 in the horizontal direction. The split groove 2b is a slot that reaches the guide hole 2a and has a wide and narrow groove width.
A slide groove 2c (FIG. 1) for guiding the front / rear slide saddle 3 is provided in the upper part of the horizontal slide saddle 2.
The lateral movement driving means 8 will be described. As shown in FIGS. 3 and 4, the main body 8a is provided with a jack screw 8c that expands and contracts in the left-right direction in FIG. 4 by rotating the handle 8b. A connecting shaft 8d is connected to the tip of the jack screw 8c, and the most distal end portion of the connecting shaft is connected to the connecting portion 2d of the lateral slide saddle 2.
The lateral slide saddle 2 can move along the guide shaft 7 in the vertical direction in FIG. 3 along with the expansion and contraction of the connecting shaft 8d caused by the rotation operation of the handle 8b.

  As shown in FIG. 1, the front / rear slide saddle 3 can be moved back and forth in the direction of the pass line, and a rolling material guide device G can be mounted on the upper part. The front / rear slide saddle 3 has an L-shaped cross section as shown in FIG. A latching groove 3a for latching the base Ga of the guide device G is provided on the upper side of one end (left end in FIG. 2) of the front and rear slide saddle 3 on the rolling roll R side. A connecting portion 3b protrudes downward from the lower end of the other end (right end in FIG. 2) opposite to the rolling roll R side of the front and rear slide saddle 3. The connecting portion 3b is coupled to the saddle clamp means 4.

The saddle clamp means 4 includes a clamp 11, a clamp bolt 12, and a nut 13 as shown in FIGS. The clamp 11 is formed with a hook 11 a at the upper end, and this hook can be fixed in a state where the base Ga of the guide device G is hooked on the front and rear slide saddle 3. A set bolt 14 is attached to the lower part of the clamp 11 so as to be movable in the front-rear direction. The head of the set bolt 14 is protruded from the inner surface of the clamp 11 and is brought into contact with the outer surface of the connecting portion 3 b of the front and rear slide saddle 3.
As shown in FIG. 1, the clamp bolt 12 passes through the clamp 11 and the connecting portion 3 b of the front and rear slide saddle 3 in the thickness direction. A nut 13 is attached to the clamp bolt 12 on the outer surface side of the clamp 11. By tightening the nut 13, the clamp 11 and the connecting portion 3b are integrally coupled, and the base Ga of the guide device G is fixed through the hook 11a of the clamp.

As shown in FIG. 1, the front / rear movement adjusting shaft 5 is horizontally penetrated through the front / rear slide saddle 3, and the tip end side opposite to the rolling roll R (right side) is extended into the clamp 11. The front / rear movement adjusting shaft 5 is formed of a screw shaft, and a tip end side thereof is supported by an end portion in the front / rear slide saddle 3. The forward / backward movement adjusting shaft 5 is screw-coupled via an internal thread and a screw bearing 15 attached to the upper part of the lateral slide saddle 2. The screw bearing 15 constitutes a longitudinal movement driving means together with the longitudinal movement adjusting shaft 5.
The distal end portion of the extension bar 16 can be attached to and detached from the distal end portion of the longitudinal movement adjusting shaft 5. Since the screw bearing 15 is fixed by rotating the extension bar in a state in which the tip of the extension bar 16 is coupled to the tip of the adjustment shaft 5 for forward / backward movement, the adjustment shaft for forward / backward movement is forward / backward (FIG. 1). The front and rear slide saddle 3 can be moved back and forth through this movement.

The pressing means 6 will be described with reference to FIGS.
The pressing means 6 includes an engaging portion 17 and an engaging recess 2f that is an engaging portion. The locking portion 17 is attached to the lower side of the clamp 11 and is disposed at the lower portion of the connecting portion 3b. The cross-sectional shape of the locking part 17 is circular.
A projecting portion 2 e is provided at the lower part of the outer side surface of the lateral slide saddle 2. An engaging recess 2f is provided at the tip of the protrusion 2e. The engaging recess has a substantially V-shaped cross section, and the upper side of the inner surface is an inclined surface 2f1 that rises to the right in FIG. On the outer surface side of the lateral slide saddle 2, the upper side of the protruding portion 2 e is a storage recess 18.
The engaging part 17 can engage with the engaging recess 2f of the projecting part 2e. When the engaging part 17 is engaged as shown in FIG. 1, the engaging part 17 lifts the projecting part 2e with respect to the inclined surface 2f1. A pressing force is applied (upward in FIG. 1).

Here, each relationship of the horizontal slide saddle 2, the front and rear slide saddle 3, the front and rear movement adjusting shaft 5 and the pressing means 6 will be described.
The front / rear slide saddle 3 can slide back and forth along the slide groove 2c on the lateral slide saddle 2 as the adjustment shaft 5 for front / rear movement moves.
For example, by rotating the adjustment shaft 5 for back-and-forth movement in the reverse direction, the front-rear slide saddle 3 moves rearward, the connecting portion 3b moves away from the storage recess 18 of the lateral slide saddle 2, and the clamp 11 and the connecting portion 3b simultaneously. Retreat as one. At this time, the front end portion of the guide device G is pulled out from the rolling roll R.
Further, when the forward / backward movement adjusting shaft 5 is rotated forward, the front / rear slide saddle 3 is also moved forward, and the connecting portion 3b is accommodated in the storage recess 18 of the lateral slide saddle 2, and at the same time, the clamp 11 is integrated with the connecting portion. The locking portion 17 is engaged with the engaging recess 2f of the protruding portion 2e (FIG. 2).
In such an engaged state, the position of the front / rear slide saddle 3 is fixed by strongly tightening the adjustment shaft 5 for front / rear movement, and the pressing force of the locking portion 17 attached to the connecting portion 3b is changed to the engagement concave portion. It is converted into a force that lifts the lower part (protruding part 2e) of the lateral slide saddle 2 through the inclined surface 2f1 of 2f, and the gap of the dividing groove 2b becomes narrower. Since the gap between the side slide saddle and the side slide saddle will eventually be in close contact with each other, the lateral slide saddle will be locked to the guide shaft.

Next, how to use the rest bar device 1 will be described.
When the rest bar device 1 is in the state shown in FIG. 2 and the caliber is changed, for example, it is necessary to first retract the rolling material guide device G mounted on the front and rear slide saddle 3.
Therefore, first, in order to unlock the front / rear slide saddle 3 by the front / rear movement adjustment shaft 5, the front end of the extension bar 16 is connected to the front end of the front / rear movement adjustment shaft, and the lock is loosened in the extension bar. Is rotated in a predetermined direction (for example, reversely rotated). By the reverse rotation of the extension bar 16, the forward / backward movement adjusting shaft 5 is also reversely rotated. By continuing this rotation, the front / rear slide saddle 3 is moved rearward, and the guide device G on the front / rear slide saddle is also retracted to a predetermined position. When moving backward, the movement of the front and rear slide saddle is stopped. When the front / rear slide saddle 3 is stopped, the tip of the guide device G is pulled out from the rolling roll R (FIG. 1).
As the adjustment shaft 5 is moved back and forth, as shown in FIG. 1, the pressing force applied to the projecting portion 2e by the locking portion 17 opens, so that the gap of the split groove 2b is opened and the guide hole 2a of the lateral slide saddle 2 is opened. And the guide shaft 7 are released from contact with each other and the lock of the lateral slide saddle 2 is released, so that the lateral slide saddle can be moved.
Subsequently, the horizontal slide saddle 2 is moved along the guide shaft 7 through the connecting shaft 8d by the rotation operation of the handle 8b of the lateral movement driving means 8, and an adjustment operation for adjusting the position of the new caliber is performed.
After adjusting the alignment of the lateral slide saddle 2 by lateral movement, the following operation is performed in order to align and lock the longitudinal slide saddle 3 by the adjustment shaft 5 for longitudinal movement.
The extension bar 16 is used to rotate forward. The forward / backward movement adjusting shaft 5 is also rotated in the same direction by the forward rotation of the extension bar 16, and by continuing this rotation, the front / rear slide saddle 3 is advanced, and the guide device G on the front / rear slide saddle is also advanced to a predetermined position. Move and adjust the alignment. When the leading end of the guide device G is in a predetermined position in the rolling roll R, the locking portion 17 is engaged in the engaging recess 2f.
At the final point of the position adjustment of the front / rear slide saddle, if the adjustment shaft 5 for front / rear movement is strongly tightened by the extension bar 16, the locking part 17 presses the inclined surface 2f1 of the engaging recess 2f upward, and this pressing force is Since it reaches the horizontal slide saddle 2, the gap between the split grooves 2b becomes narrow, the groove facing surface is brought into close contact with each other, and the inner peripheral surface of the guide hole 2a and the outer peripheral surface of the guide shaft 7 are brought into close contact with each other. It will be locked to the guide shaft. At the same time, the front / rear slide saddle 3 is also locked to the lateral slide saddle 2.
As described above, in the final process of adjusting the position of the front / rear slide saddle 3, the fixing operation of the front / rear slide saddle and the operation of fixing the lateral slide saddle 2 to the guide shaft 7 are performed by tightening the adjustment shaft 5 for front / rear movement. You can do it at the same time.

Another embodiment of the present invention will be described with reference to FIGS.
Since the rest bar apparatus 1A shown in FIG. 5 is common in the main part with that of the rest bar apparatus 1 shown in FIG. 1, only the different constituent parts (characteristic parts) will be described and common parts will be described. Will not be described in detail.
Lateral slide saddle 102, guide hole 102a, split groove 102b, slide groove 102c, connecting portion 102d, front and rear slide saddle 103, latch groove portion 103a, connecting portion 103b, guide shaft 107, guide bar 107a, rest bar flange 109, saddle clamp The clamp 111 of the means 104, the hook 111a, the clamp bolt 112 and the nut 113, the main body 108a of the lateral movement drive means 108, the handle 108b, the jack screw 108c and the connecting shaft 108d are the lateral slide saddle 2, the guide hole 2a, Split groove 2b, slide groove 2c, connecting portion 2d, front and rear slide saddle 3, latching groove portion 3a, connecting portion 3b, guide shaft 7, guide bar 7a, rest bar flange 9, clamp 11 of saddle clamp means 4, hook 1a, the clamp bolt 12 and the nut 13, the main body 8a, a handle 8b of the lateral movement driving means 8, correspond respectively to the jack screw 8c and connecting shaft 8d.
Now, the characteristic parts in the rest bar device 1A are as follows.
The first is in the configuration of a forward / backward movement adjusting shaft 118 which is a forward / backward movement driving means. That is, one end (left end in FIG. 5) of the adjustment shaft 118 for back and forth movement is fixedly connected to the lateral slide saddle 102, and the other end is screwed into a female screw in the screw bearing 119. The screw bearing 119 is formed in the shape of a cap nut, and is inserted into the connecting portion 103b of the front and rear slide saddle 103 and the clamp 111 in the horizontal direction and held rotatably. When the head of the screw bearing 119 is held and the screw bearing is rotated in a direction to unlock the front and rear slide saddle 103 (for example, reversely rotated), the front and rear movement adjustment shaft 118 is moved away from the screw bearing. As the screw bearing moves relative to the right in FIG. 6 (retreats), the front / rear slide saddle 103 retracts. On the other hand, when the screw bearing 119 is rotated forward, the screw bearing advances along the adjustment shaft 118 for forward and backward movement, so that the front and rear slide saddle 103 advances.
The second is the configuration of the pressing means 106. That is, the pressing means 106 includes locking protrusions 102g1 and 102g2 and an engaging recess 103c.
As shown in FIGS. 5 and 6, the locking projections 102g1 and 102g2 are provided on the outer surface of the lateral slide saddle 102 so as to be adjacent to each other in the vertical direction across the split groove 102b. The engaging recess 103c is formed in a substantially V shape in the connecting portion 103b of the front and rear slide saddle 103, and is disposed on the outer surface facing the locking protrusions 102g1 and 102g2. The locking protrusions 102g1 and 102g2 can be engaged in the engaging recess 103c. In the engaged state as shown in FIG. 5, the locking projections 102g1 and 102g2 are held by a predetermined pressing force so that the inner surface of the engagement recess 103c sandwiches the locking projection from the vertical direction. Since the engaging protrusions 102g1 and 102g2 are held by the inner surface of the engaging recess 103c, the abutting surfaces come into contact with each other, so that the outer peripheral surface of the guide shaft 107 and the inner peripheral surface of the guide hole 102a are in close contact with each other. The lateral slide saddle 102 is locked to the guide shaft 107.
The engaging portion 117 and the engaging recess 102f, which are the locking means 116, correspond to the engaging portion 17 and the engaging recess 2f, but the engaging recess 102f is formed in the connecting portion 103b. This is different from the engaging recess 2f. And the clamp 111 always fixes the guide apparatus G of a rolling material in the engagement state of the latching | locking part 117 and the engagement recessed part 102f.

Next, how to use the rest bar device 1A will be described.
Since this usage is common to that of the rest bar device 1, only the differences will be described.
For example, in the case of changing the caliber, for example, by rotating the screw bearing 119 in the reverse direction, the front / rear slide saddle 103 moves on the lateral slide saddle 102 to the right in FIG. It moves backward and the front-end | tip of the guide apparatus G is pulled out from the rolling roll R. FIG.
As the front and rear slide saddle 103 is retracted, as shown in FIG. 6, the front and rear slide saddle connecting portion 103b is separated from the lateral slide saddle 102, and the engagement between the locking projections 102g1 and 102g2 and the engaging recess 103c is released. Therefore, the lock of the lateral slide saddle 102 is released.
After the release, the lateral slide saddle 102 is moved along the guide shaft 107 by the lateral movement drive means 108, and an adjustment operation for aligning the position of the new caliber is performed.
After the lateral movement adjustment, the screw bearing 119 that is screw-coupled with the longitudinal movement adjusting shaft 118 is rotated forward. By continuing forward rotation of the screw bearing 119, the front / rear slide saddle 103 is advanced, the guide device G on the front / rear slide saddle is also advanced, and the tip of the guide device G is placed in a predetermined position in the rolling roll R. Then, at the final position of alignment, after the position adjustment, the screw bearing 119 is firmly tightened to finish fixing the front and rear slide saddle 103 (FIG. 5).
At the stage where the positioning of the front and rear slide saddle 103 is completed, the locking projections 102g1 and 102g2 and the engagement recess 103c are engaged as shown in FIG. In the process of engagement between the locking protrusions 102g1 and 102g2 and the engaging recess 103c, the inner surface of the engaging recess gradually narrows with the locking protrusions 102g1 and 102g2 between, and eventually comes into close contact with each other. When the opposing surface of the split groove 102 b comes into close contact with the screw bearing 119, the lateral slide saddle 102 is locked to the guide shaft 107.
In the rest bar device 1A shown in FIG. 5 as well, the front / rear slide saddle 103 is fixed and the lateral slide saddle 102 is fixed to the guide shaft 7 by tightening the front / rear movement adjusting shaft 118 in the process of adjusting the position of the front / rear slide saddle 103. You can work at the same time.

  The rest bar apparatus 1 shown in FIG. 1 operates the adjustment shaft 5 for back and forth movement, and the pressing means 6 interlocked with this operation, and the rest bar apparatus 1A shown in FIG. 5 operates the adjustment shaft 118 for back and forth movement through the screw bearing 119. In any example, the positioning of the front and rear slide saddles 3, 103 and the fixing operation (locking) thereof are finished by the pressing means 106 interlocked with this operation, and at the same time, the lateral slide saddles 2, 102 with respect to the guide shafts 7, 107 are Fixing work (locking) can be completed. Since it is not necessary to separately perform the fixing operation of the front and rear slide saddles 3, 103 and the fixing operation of the horizontal slide saddles 2, 102, the burden on the operator can be reduced, and the work efficiency of the position adjustment accompanying the caliber change can be reduced. Contributes to improvement.

  In FIG. 1, the disposition positions of the locking portion 17 and the engagement recess 2 f may be reversed, and it is not always necessary to dispose the engagement recess 2 f on the side slide saddle 2 side.

It is a front view of a rest bar device showing one embodiment of this invention. It is a front view of the rest bar device showing one embodiment of this invention, and is a figure showing the locked state of a side slide saddle and a front and back slide saddle. It is a top view of the rest bar apparatus which shows one Embodiment of this invention. It is a side view of a rest bar device showing one embodiment of this invention. It is sectional drawing of the rest bar apparatus which shows the other form of implementation of this invention. It is sectional drawing of the rest bar apparatus which shows other forms of implementation of this invention, Comprising: It is a figure of the state by which the lock | rock of the horizontal slide saddle and the front-and-back slide saddle is cancelled | released. It is a top view of the rest bar apparatus which shows other forms of implementation of this invention. It is a side view of the rest bar apparatus which shows other forms of implementation of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,1A Rest bar apparatus 2,102 Side slide saddle 2a, 102a Guide hole 2b, 102b Split groove 2f, 102f Engagement recessed part (engagement part)
2f1 Inclined surface 3,103 Front / rear slide saddle 4,104 Saddle clamp means 5 Adjustment shaft for forward / backward movement (front / rear movement drive means)
6,106 Pressing means 7,107 Guide shaft 8,108 Lateral movement drive means 15 Screw bearing (front and rear movement drive means)
17,117 Locking part 102g1, 102g2 Locking protrusion 103c Engaging recess 118 Adjusting shaft for forward and backward movement (front and rear movement drive means)
119 Screw bearing (front and rear movement drive means)
G Rolled material guide device

Claims (5)

A lateral slide saddle that is movable along the guide shaft in a direction orthogonal to the pass line direction, a front and rear slide saddle that is movable back and forth in the pass line direction, a saddle clamp means, a forward and backward movement drive means, and a pressing means are provided. And
The lateral slide saddle is provided with a split groove whose one end reaches the guide shaft and whose groove width is wide and narrow,
The front and rear slide saddles are arranged so as to be movable on the horizontal slide saddles, and are equipped with a rolling material guide device,
The saddle clamp means can fix the guide device on the front and rear slide saddle, and can be connected to the front and rear slide saddle,
The front / rear movement driving means drives the front / rear movement of the front / rear slide saddle,
The pressing means applies a pressing force from the back-and-forth movement driving means to the lateral slide saddle in a direction of narrowing the groove width of the split groove,
The front / rear slide saddle is fixed on the lateral slide saddle by the front / rear movement driving means, and the lateral slide saddle is fixed to the guide shaft by a pressing force from the front / rear movement driving means to the pressing means. Rest bar device to do.   The longitudinal movement drive means includes a longitudinal movement adjustment shaft comprising a screw shaft disposed in the longitudinal slide saddle, and a screw bearing attached to the lateral slide saddle, and the longitudinal movement adjustment shaft is provided in the screw bearing. The rest bar device according to claim 1, wherein the rest bar device is inserted in a screwed state.   The back-and-forth movement drive means includes a front-rear movement adjustment shaft comprising a screw shaft attached to the lateral slide saddle and a screw bearing rotatably attached to the lateral slide saddle, and one end side of the front-rear movement adjustment shaft is The rest bar device according to claim 1, wherein the rest bar device is inserted into the screw bearing and screwed together.   The pressing means includes an engaging recess provided on the lateral slide saddle and forming an inclined surface on the inner surface, and an engaging portion engageable with the engaging recess, and the engaging portion is an inclined surface. The rest bar device according to any one of claims 1 to 3, wherein the rest bar device can be pressed in a direction in which the groove width of the split groove is narrowed.   The pressing means is provided on the horizontal slide saddle and is disposed opposite to the slit, and the engaging recess is provided on the front and rear slide saddle and can be engaged with both locking protrusions. 4. The rest bar device according to claim 1, wherein the engaging recess is capable of holding both the engaging protrusions in a direction in which the opposing surfaces of the split grooves are in close contact with each other. .

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