JP4153588B2 - Work vise for work vise round bar - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a work vice workpiece cradle used to secure the workpiece to the work table and the table of the machine tool, to a word over click cradles suitable particularly for fixing the rod.
[0002]
[Prior art]
A work vise (hereinafter, simply referred to as a “vise”) is configured such that a work is sandwiched and fixed by two bases that move forward and backward opposite to each other, and the work clamping surface of a normal vice is a plane parallel to each other. ing. In order to perform accurate machining, it is necessary to fix the workpiece to the vise at an accurate position. Generally, the workpiece position is defined by the workpiece clamping surface of the fixed base and the receiving surface of the workpiece cradle. Yes. The receiving surface of a normal work cradle is a plane orthogonal to the work clamping surface of the die.
[0003]
In metal processing, it is frequently necessary to work a rack, a key groove, and a tap hole on the side surface of a round bar. If a round bar is clamped with a normal vice to perform such processing, the state shown in FIG. 6 is obtained. This once the workpiece 60 in such a state can be clamped, the unstable fixed word over click, or lifted from the receiving surface 35 workpiece cradle when clamping the workpiece, or the workpiece is displaced moves during machining It is easy to happen.
[0004]
Therefore, in order to avoid such a problem, conventionally, a round bar is fixed using a base or a cradle as shown in FIGS. The structure shown in FIG. 7 has a V-shaped workpiece clamping surface of the base 62. By clamping the workpiece 60 between the opposing V-shapes, the workpiece is positioned vertically and horizontally, and the workpiece is lifted or displaced. It is something that wasn't done.
[0005]
On the other hand, the structure shown in FIG. 8 is a structure using a so-called V block as the cradle 63. The receiving surface of the cradle 63 is V-shaped, and the work 60 is pressed against the cradle 63 from above by a presser foot 64. The position of 60 up, down, left and right is defined and fixed.
[0006]
[Problems to be solved by the invention]
However, in the conventional structure of FIGS. 7 and 8 in which the contact surface with the workpiece is V-shaped, the shape error of the V-shaped surface and the attachment error of the base or the cradle to the vice reduce the machining accuracy of the workpiece. There is a problem that the setup work when the diameter of the work to be processed is changed is troublesome and that it is difficult to fix a plurality of works at the same time.
[0007]
For example, in the structure of FIG. 7, if there is an error in the mounting height of the base, the error directly affects the machining depth of the workpiece, and if the base is not replaced with one having a vertical width that matches the workpiece diameter, The gripping position of the tool becomes lower and the tool and the base interfere with each other (when the workpiece has a small diameter), or the workpiece is detached from the workpiece clamping surface, and the workpiece is clamped at the upper and lower edges of the base (when the workpiece has a large diameter). This happens.
[0008]
In the structure shown in FIG. 8, the vertical position of the workpiece can be obtained relatively accurately. However, since the presser foot 64 interferes with the tool, the workpiece must be fixed at a position away from the machining position, and the workpiece is bent. If the workpiece is short or when machining over the entire length of the workpiece, it is impossible to fix the workpiece with this structure, and three or more workpieces were fixed at the same time. In some cases, the pitch (distance) between the workpieces varies, and the attachment / detachment of the workpieces is troublesome.
[0009]
The present invention has been made to solve the above-mentioned problems of the prior art, and has a high fixing position accuracy, can easily cope with a change in the diameter of the workpiece, and fixes a plurality of workpieces in an accurate positional relationship. It is an object to obtain a work pedestal for a vise with a round bar that can be attached and detached and requires little work.
[0011]
[Means for Solving the Problems]
The work support for a round bar according to the invention of claim 1 of this application is provided with grooves or ridges 32 that are slidably fitted to the slide guide 4 parallel to the work clamping direction of the caps 11 and 21 facing the vice. The intermediate base 33 provided with the slide bases 31 and 51 provided, and the two workpiece clamping surfaces 13 and 23 which are flat surfaces in which at least one surface 23 projecting from the slide base is inclined toward the slide base side. The slide bases 31 and 51 have a receiving surface 35 extending toward the inclined workpiece clamping surface side of the intermediate base 33.
[0012]
The round bar work cradle according to the invention of claim 2 is a round bar work cradle provided with the above-mentioned means, wherein the intermediate base 33 is placed on the upper end surface 37 of the slide bases 31 and 51 with bolts. It is fastened and fixed at 34.
[0013]
[Action]
When a round bar is clamped by the workpiece clamping surfaces 13 and 23 facing each other, the workpiece clamping surface is inclined downward because one of the workpiece clamping surfaces 23 faces the receiving surface 35 side. The workpiece 60 is pressed against the receiving surface 35 side to prevent the workpiece 60 from being lifted from the receiving surface 35. Since one of the workpiece clamping surfaces 13 and the receiving surface 35 are orthogonal to each other, the fixed position of the workpiece 60 can be accurately defined with reference to these surfaces.
[0014]
When the diameter of the workpiece changes, the spacer 36 is placed on the receiving surface 35, and if necessary, the spacer 16 is attached to the workpiece clamping surface orthogonal to the receiving surface, so that the workpiece fixing position is brought to the desired position. These spacers 16 and 36 can be easily machined with an accurate thickness by surface grinding. Therefore, when the workpiece height position accuracy, left and right position accuracy and multiple workpieces are processed simultaneously, The pitch between workpieces can be set with high accuracy.
[0015]
The workpiece receiving base of the invention, Ri by the placing it on device, so simultaneous fixing of several workpieces can be easily. This work cradle can be configured to have a side surface shape of a substantially T shape and simultaneously fix two works on both sides, and can also be shaped as a substantially L shape to fix one work piece side by side.
[0016]
The workpiece cradle with the workpiece holding surface 35 integrally provided on the side where the workpiece clamping surface is inclined toward the slide base is a receiving surface 35 integrally provided with a downward force acting from the inclined workpiece clamping surface 23. Since it can be received, no vertical force is applied between the vice body and the work cradle, and the height of the work caused by the clearance between the slide guide and the fitting groove or ridge of the work cradle. A decrease in position accuracy can also be avoided.
[0017]
Further, in the work cradle of claim 2 , if the work is lightly grasped with the bolt 34 fastening the intermediate base 33 slightly loosened, the intermediate base 33 slides on the upper end surface 37 of the slide base and the intermediate base 33 is moved. Since the parallelism between and the workpiece 60 is accurately set, the slide bases 31 and 51 and the intermediate base 33 can be integrated by closing the bolt 34 as it is. According to this structure, since the slide bases 31 and 51 and the intermediate base 33 can be individually manufactured, the work cradle of the present invention can be provided at a lower cost, and the damaged intermediate base can be easily replaced.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
1 and 2 show a first embodiment of the present invention. The vise 1 shown in the drawing is provided with guide grooves (slide guides) 4 for guiding the movable jaw 20 and the work receiving base 30 on both upper side surfaces of the base 3 .
[0019]
A fixed jaw 10 is integrally fixed to one end of the base 3 with a bolt (not shown), and a fixed base 11 having a mounting surface 12 and a work clamping surface 13 parallel to a surface facing the movable jaw 20 of the fixed jaw. Is attached. The movable jaw 20 is slid along the guide groove 4 by a feed screw mechanism (not shown), and a movable base 21 having a work clamping surface 23 inclined to the base 3 side is mounted on the surface facing the fixed jaw 10. ing.
[0020]
Between the fixed jaw 10 and the movable jaw 20, two substantially T-shaped work bases 30 and a substantially I-shaped base 40 are used to connect the fitting protrusions 32 of the slide bases 31 and 41 to the vise base. It is slidably fitted into the guide groove 4 of the base. The slide bases 31 and 41 are U-shaped in cross section, and are provided with fitting protrusions 32 facing the inner side of the lower side.
[0021]
At the center of the slide bases 31, 41, an intermediate base 33 is erected by being fixed with bolts 34. Work receiving surfaces 35 processed to have an accurate height are formed on the upper surfaces of both sides of the intermediate base of the slide base 31 of the work base, and upper end surfaces 37 of the slide bases 31 and 41 to which the intermediate base 33 is attached. Is a plane higher than the receiving surface 35.
[0022]
The workpiece clamping surface 23 facing the fixed jaw side of the intermediate base 33 is a downward inclined plane facing the slide bases 31 and 41, and the workpiece clamping surface 13 facing the movable jaw side is a plane orthogonal to the receiving surface 35. It has become.
[0023]
FIG. 1 shows a state in which four round bars 60 are fixed at the same time using the vise 1 having the above-described configuration, two work receiving bases 30 and one base base 40. A spacer 36 is appropriately interposed on the receiving surface 35 of the slide base 31 so that the upper end of the workpiece protrudes from the bases 11, 21, 33 by a height required for processing. The spacer 36 is also used when the contact position between the inclined work clamping surface 23 and the work 60 is to be a fixed position. As shown by the imaginary line in the figure, when fixing the round bar 61 with a small diameter, a spacer 36 having a high height is attached on the receiving surface 35 so that the upper surface of the workpiece protrudes above the base as necessary, or is inclined. The contact position between the workpiece clamping surface 23 and the workpieces 60 and 61 is set to a constant height. Furthermore, when the work has a very small diameter and the slide base 31 and the fixed and movable jaws interfere with each other when the work is held, a spacer 16 having an appropriate thickness is attached to the vertical work holding surface 13. The spacer 16 can also be used to keep the distance between the workpieces constant when holding workpieces having different diameters at the same time.
[0024]
As shown in FIG. 3, if the intermediate base of the work cradle is an intermediate base having inclined surfaces facing the slide base 31 on both sides 23 and 23, the movable base 21 provided on the movable jaw is fixed. A base attached to a normal vise similar to the base 11 can be used as it is.
[0025]
4 and 5 show a second embodiment of the present invention. In the second embodiment, the same number of side surface L-shaped workpiece receiving bases 50 as the number of workpieces to be fixed simultaneously are used. The structure of the vice 1 is the same as that of the first embodiment.
[0026]
The intermediate base 33 of the workpiece cradle 50 of the second embodiment is erected on the movable jaw side end of the slide base 51 slidably fitted to the vise base 3. The intermediate base 33 is an inclined surface in which the workpiece clamping surface 23 facing the fixed jaw side faces the slide base 51 side, and the workpiece clamping surface 13 facing the movable jaw side is a plane orthogonal to the receiving surface 35 of the slide base. The slide base 51 extends only to the inclined workpiece clamping surface 23 side of the intermediate base, and a receiving surface 35 is formed on the upper surface thereof. The movable base 21 attached to the movable jaw 20 of the vise is a normal base in which the attachment surface 12 and the work clamping surface 13 are parallel planes, like the fixed base 11 attached to the fixed jaw 10.
[0027]
In the second embodiment, the intermediate base 33 of the leftmost work cradle is interposed between the movable base 21 and the work closest thereto, and the maximum clamping stroke of the vice is reduced by this intermediate base. However, there is a feature that a work cradle having the same diameter can be used. The work cradles 30 and 50 and the base 40 shown in the drawings can be used in appropriate combinations. For example, when four works are fixed, the L-shaped work cradle 2 of the second embodiment is used. It is also possible to use one piece and one substantially T-shaped work cradle of the first embodiment.
[Brief description of the drawings]
FIG. 1 is a side view showing a workpiece clamped state of a first embodiment. FIG. 2 is a perspective view of a workpiece cradle according to the first embodiment. FIG. 3 is a perspective view showing a modification of the first embodiment. FIG. 5 is a side view showing the second embodiment in a state where the workpiece is clamped. FIG. 6 is a side view of the first conventional example. FIG. 7 is a side view of the second conventional example. 8] Side view of the third conventional example [Explanation of symbols]
4 Guide groove
11 Fixed cap
13 Work clamping surface
21 Movable base
23 Work clamping surface
31 Slide base
32 Mating ridge
33 Intermediate cap
34 volts
35 Work surface
37 Top surface
51 Slide guide

Claims (2)

  A slide base (31, 51) provided with grooves or ridges (32) slidably fitted in a slide guide (4) parallel to the workpiece clamping direction of the workpiece (11, 21) facing the work vice; An intermediate base (33) provided with two workpiece clamping surfaces (13, 23) opposite to each other, wherein at least one side (23) protruding from the slide base is a flat surface inclined toward the slide base. The work base for a work vise round bar, wherein the slide base (31, 51) includes a receiving surface (35) extending toward the inclined work clamping surface side of the intermediate base (33). And wherein the intermediate mouthpiece (33) is fastened and fixed by bolts (34) in a state placed thereon on the upper end face (37) of the slide base (31, 51), of claim 1, wherein the workpiece vice Work cradle for round bar.

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