JP2000202711A - Vise unit in cutting machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vise unit in a cut-finishing machine which is designed to get rid of replacement work, automatically adjsuting the height of a vise, and to adjust the height of a guide member, for clamping a workpiece and guiding a cutting tool. SOLUTION: This vise unit in a cutting machine 1 clamps a work W by a fixed vise 37 and a moving vise 41 when it is cut, and both these fixed and moving vises 37 and 41 are comprised of a vise body 51 and a vise plate 59 being capable of up and down motion to the vise body 51. In addition, the vise plate 59 is composed of installing a position detecting sensor to be automatically adjusted in the vertical direction according to the size of the workpiece W.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vice device in a cutting machine for clamping a work when cutting the work in a cutting machine such as a vertical band saw machine.

[0002]

2. Description of the Related Art Conventionally, when a workpiece is cut by, for example, a vertical band sawing machine as a cutting machine, FIG.
As shown in (B), the work W is fixed to the fixed vise 1.
01F, the band saw blade 103 is rotated in the vertical direction in FIGS. 5A and 5B while being clamped by the moving vise 101M, and is moved to the left in FIGS. 5A and 5B. Band saw blade 1 for work W
At 03, a cutting process is performed. Note that the band saw blade 103 travels while being guided by the guide bracket 105. In FIG. 5A, the fixed vise 101F and the movable vise 1 are shown.
In FIG. 5B, a thin work W having a cross section of octagonal or round is clamped by a fixed vise 101F and a movable vise 101M.

[0003]

By the way, the work W is clamped and cut from a small diameter (thin plate) to a large diameter by the fixed vise 101F and the moving vise 101M shown in FIGS. 5 (A) and 5 (B). In order to do so, for example, in the case of a round material of the work W, a material having a vise height from the center of the round material to a position higher than the center is used. For example, 23 for 400 size
There is a vise height of about 0 mm, on which the guide bracket 105 runs.

In this case, the work W and the guide bracket 1
There is a problem that the span of 05 is too wide and adversely affects cutting.

In the case of a structure in which the vise device is divided into two parts vertically and integrated with bolts, there is a case where the bolts are loosened and the upper part is removed to bring the guide bracket 105 closer to the work W. There is a problem that replacement is troublesome because the upper part is removed or attached.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a vice device in a cutting machine which eliminates replacement work, automatically adjusts the height of a vice, and adjusts the height of a guide member for clamping a work and guiding a cutting tool. To provide.

[0007]

According to a first aspect of the present invention, there is provided a cutting machine for cutting a workpiece, wherein the workpiece is clamped by a fixed vice and a moving vise when the workpiece is cut. Wherein the fixed vice and the movable vise are each composed of a vice main body and a vice plate movable up and down with respect to the vice main body.

Therefore, when cutting the work, the work is clamped by the fixed vice and the movable vise. At this time, the vise plate is moved up and down with respect to the vice body in the fixed vice and the movable vise to clamp an appropriate part of the work, so that the trouble of the conventional exchange work is eliminated and the cutting tool such as The guide member that guides the blade can be brought as close as possible to the workpiece, and efficient and high-precision cutting can be performed.

According to a second aspect of the present invention, there is provided a vice apparatus in the cutting machine according to the first aspect, wherein the vise plate has a position detection sensor for automatically adjusting the vice plate in the vertical direction according to the size of the work. It is characterized by being provided.

Therefore, since each vise is provided with a position detection sensor, the position of the vise plate when the vise plate is moved up and down is detected by the position detection sensor. The work is clamped by each vise after the position of the plate is positioned at an appropriate part.

[0011]

Embodiments of the present invention will be described below in detail with reference to the drawings.

Referring to FIGS. 3 and 4, a U-shaped saw blade housing 3 of a vertical band saw machine 1 as an example of a cutting machine includes a drive wheel 5 and a driven wheel 7 disposed vertically. A band saw blade 9 is wound. An upper saw blade guide member 11 and a lower saw blade guide member 13 of the guide members for guiding the band saw blade 9 stretched between the driven wheels 7.
Are supported by the saw blade housing 3. The upper saw blade guide member 11 is vertically movable by a guide post 15 and is fixed after position adjustment, and the lower saw blade guide member 13 is fixed.

By the upper guide member 11 and the lower guide member 13, the band saw blade 9 is twisted by 90 degrees in the thickness direction from the tooth tip to the back of the body only between them. The twist angle is not limited to 90 degrees, but may be 90 degrees or less.

The saw blade housing 3 is suspended via a guide portion 21 such as a linear bearing provided on the upper surface of the upper frame 19 of the left and right frames 17 erected from the floor, for example. A servo motor 23 is provided on the upper surface of the saw blade housing 3, and a speed reducer 25
And the pinion 27 is interlocked and connected. The pinion 27 is engaged with a rack 29 provided on the upper frame 19 of the frame 17.

With the above configuration, the pinion 27 is rotated via the speed reducer 25 by driving the servo motor 23, and the pinion 27 meshes with the rack 29 provided on the upper frame 19. 3 is moved to the left and right direction in FIG. 4, that is, the cutting direction indicated by the X arrow in the figure or to the standby position indicated by the two-dot chain line in FIG.

In a direction perpendicular to the cutting direction of the vertical band saw machine 1, that is, at an appropriate interval in the left-right direction in FIG. 3, a transfer conveyor 33 provided with a plurality of rollers 31 for mounting and transferring the work W is provided. Have been. The conveyor 33 is provided without contact when the U-shaped portion 35 of the saw blade housing 3 enters.

The upper surface of the roller 31 of the conveyor 33 serves as a reference plane Y on which the work W is placed. This work W
After positioning, the fixed vise 37 serving as a reference for clamping (clamping and fixing), and the moving vise 41 approaching and separating from the fixed vise 37 by the clamp cylinder 39 are provided on the rollers 31 of the transport conveyor 33. .

Further, the chip conveyor 4 is provided on the lower frame 43 of the frame 17 in order to collect chips and cutting fluid generated when the band saw blade 9 cuts the workpiece W.
5 and a cutting fluid tank 47 are provided. The cutting fluid tank 47 is provided with a chip cover 49 for preventing chips or cutting fluid from being scattered, which can be opened and closed on both sides of the lower frame 43.

With the above configuration, the work W placed on the rollers 31 of the conveyor 33 is sent to the desired cutting position, and is clamped by the operation of the clamp cylinder 39 in cooperation with the fixed vice 37 and the movable vise 41. At this time, the saw blade housing 3 is at the standby position shown by the two-dot chain line in FIG. By driving the servo motor 23 from this state, the pinion 27 rotates via the speed reducer 25, and the pinion 27 is engaged with the rack 29, so that the saw blade housing 3 moves forward (moves rightward in FIG. 4). The workpiece W fixed on the roller 31 is cut by the driven band saw blade 9.

As shown in FIGS. 1 and 2, the fixed vice 37 and the movable vise 41 are provided with a vise main body 51, and the inside of each vise main body 51 extends vertically. A U-shaped groove 53 is formed. A piston rod 55 extending in the vertical direction is provided in the U-shaped groove 53, and is mounted on a hydraulic cylinder 57. Moreover, the hydraulic cylinder 57 is attached to the saw blade housing 3. A low-height vise plate 59 is provided at the tip (lower end) of the piston rod 55.
Is provided.

As shown in FIG. 2, each vise plate 59 is provided with a rack 61 extending vertically. The vice body 51 is provided with a pinion 65 via a bracket 63. The pinion 65 is engaged with the rack 61,
For example, an encoder 67 is provided as a position detection sensor.

A guide body 69 is provided at the tip of the upper guide member 11, and the guide body 69 is provided with a pair of raising rollers 71 for twisting the band saw blade 9 and a pair of insert members 73. .

With the above configuration, when the size (height) of the work W, that is, the outside diameter / 2 when the work W is a round material, and the height when the work W is a thin plate are input to the control device, the hydraulic cylinder 57 operates, each vise plate 59 is moved up and down via the piston rod 55, and the rack 61 is also moved up and down.
At 7, the position of the vise plate 59 is detected. And
The work plate W can be clamped by positioning the vise plate 59 at an appropriate portion of the work W, for example, a middle portion of the work W. If the work W is a thin plate, the vice plate 59 is lowered to the lower end. If the work W is a round material, the work W is moved to the position of the outer diameter / 2. Moreover, fixed vise 3
7. Both the moving vise 41 and the moving vise 41 have the same structure, and by automatically adjusting the vise press 59 in the vertical direction, waste of replacement work and improper span with the upper saw blade guide member 11 are solved. Work W as much as possible for member 11
, And efficient cutting can be made possible.

The present invention is not limited to the above-described embodiment of the invention, but can be embodied in other modes by making appropriate changes. Although an example in which the hydraulic cylinder 57 is used to move each vice plate 59 up and down has been described, a servo motor and a ball screw or a nut member may be used, or a rack and a pinion may be used to move the vise plate 59.

[0025]

As will be understood from the above description of the embodiment, according to the first aspect of the present invention, when cutting a work, the work is clamped by the fixed vice and the movable vise. . At this time, the vise plate is moved up and down with respect to the vice main body in the fixed vise and the movable vise, and an appropriate portion of the work is clamped.
A guide member for guiding a saw blade, for example, a saw blade, can be brought as close as possible to the workpiece, and efficient and high-precision cutting can be performed.

According to the second aspect of the present invention, since each vise is provided with a position detection sensor, the position of the vise plate when the vise plate is moved up and down is detected by the position detection sensor. Since the position of the vise plate can be positioned at an appropriate portion according to the size of the work, the work can be accurately clamped by each vise, and the processing accuracy can be improved.

[Brief description of the drawings]

FIG. 1 is an enlarged perspective view of a fixed vice and a movable vise.

FIG. 2 is a view taken in the direction of the arrow II in FIG.

FIG. 3 is a front view of a vertical band sawing machine as a cutting machine.

FIG. 4 is an arrow view along the line IV-IV in FIG. 3;

FIGS. 5A and 5B are views showing a state in which a workpiece clamped by a vise device with a conventional vertical band saw machine is cut by a band saw blade.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vertical band sawing machine (cutting machine) 3 Saw blade housing 9 Band saw blade 11 Upper saw blade guide member (guide member) 37 Fixed vise 41 Moving vise 51 Vice main body 53 U-shaped groove 55 Piston rod 57 Hydraulic cylinder 59 Vice plate 67 Encoder (position detection sensor)

Claims (2)

[Claims] 1. A vice device in a cutting machine for clamping a work with a fixed vise and a moving vise when cutting the work, wherein the fixed vice and the moving vise are respectively a vice body and a vice body. And a vice plate movable up and down. 2. The vise apparatus according to claim 1, wherein a position detection sensor is provided for automatically adjusting the vice plate in the vertical direction according to the size of the work.