JP2001129734A - Method of manufacturing vice jaw used in double end finishing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method of manufacturing a vice jaw capable of agreeing a core of a shaft center of a work fixed by a pair of half ring-shaped vice jaws mounted on a vice mechanism of a double end finishing machine, with a center of the rotation of a rotary cutting unit in the both end finishing machine. SOLUTION: In this method of manufacturing vice jaw used in a double end finishing machine for finishing both ends by a pair pf rotary cutting units 6, 6 movable in the forward and backward direction with respect to an end finishing position of a tubular work W in a state the work W is fixed by a pair of half ring-shaped bias jaws 5, 5 respectively demountably mounted on a fixed vice table 2 and a movable bias table 3 of a bias mechanism through mounting members 4, 4, a pair of jaw materials 25, 25 provided with prepared holes 24 in advancer are mounted on both vice tables 2, 3, and the prepared holes 24 of the both jaw materials 25, 25 are worked by the cutting units 6 to obtain holes having an inner diameter capable of being externally fitted to the work W.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tubular or solid workpiece cut in advance to a predetermined length, which is detachably attached to a fixed vice table and a movable vise table of a vice mechanism via respective mounting members. With a pair of substantially half ring-shaped vice jaws fitted and fixed from both sides to the outside, the inner and outer diameters of both ends of the tubular workpiece are chamfered by a pair of rotary cutting units that can move forward and backward with respect to the end processing position of the workpiece. Processing, etc.
In addition, the present invention relates to a method of manufacturing the pair of substantially half ring-shaped vice jaws used in a double-end processing machine that performs center hole drilling and the like on an end face of a work in addition to chamfering an outer diameter of a solid work.

[0002]

2. Description of the Related Art A pair of substantially half-ring-shaped vice jaws forming a part of a vice mechanism used in a double-end processing machine are fitted to the outer peripheral surface of a tubular or solid workpiece to grip the workpiece. In the state of holding and fixing, the end of the work is chamfered or center-hole processed by the rotary cutting unit, so that it has an inner diameter that closely fits the outer periphery of the work to be processed. Needless to say, it is necessary to be formed, but on the fixed vice table and the movable vise table, a work axis fixed by both half ring-shaped vice jaws mounted via mounting members respectively,
It is necessary that the rotation center of the rotary cutting unit coincides with the center, otherwise accurate machining cannot be performed.

[0003] Conventionally, the pair of substantially half ring-shaped vice jaws are conventionally formed by a suitable machine tool such as a boring machine.
A vice jaw having an inner diameter closely fitted to the outer periphery of a work to be processed is manufactured and used by being attached to a vice mechanism of a required double-end processing machine.

[0004]

When a pair of substantially half ring-shaped vice jaws separately manufactured by a suitable machine tool as described above are used by being attached to a vice mechanism of a required double-sided processing machine, In some cases, the axis of the work fixed by the two half-ring type vice jaws attached to the fixed vice table and the movable vice table of the vice mechanism, respectively, and the rotation center of the rotary cutting unit in the machine at both ends of the work are misaligned. In such a case, the processing accuracy is reduced.

SUMMARY OF THE INVENTION In view of the above problems, the present invention provides a vice mechanism for use in processing both ends of a workpiece, which is fixed by a substantially half ring-shaped vice jaw mounted on a fixed vice table and a movable vice table, respectively. It is an object of the present invention to provide a method of manufacturing a half-ring type vice jaw that can make the center axis of a work thus set coincide with the rotation center of a rotary cutting unit in a machine for processing both ends of the work.

[0006]

The invention according to claim 1 is
A pair of substantially half-ring-shaped vice jaws 5 and 5 in which a tubular or solid workpiece W is detachably attached to a fixed vice table 2 and a movable vice table 3 of a vice mechanism 1 via attachment members 4 and 4, respectively. A vice jaw for use in a double-sided processing machine for performing both-side processing by a pair of rotary cutting units 6 and 6 that are fitted and fixed from both sides to be able to advance and retreat to an end processing position of the work W, For example, a pair of jaw materials 27, 27 as shown in FIG. 9 are attached to the fixed vice table 2 and the movable vise table 3 via the attachment members 4, 4, respectively, and the vice tables 2, 3 are set at predetermined clamp positions. In the set state, both jaw materials 27,
A substantially half ring-shaped vice jaw 5, 5 is formed by forming a hole having an inner diameter capable of being externally fitted to the work W with respect to 27.

According to a second aspect of the present invention, in the method for manufacturing a vice jaw used in the double-end processing machine according to the first aspect, a spacer having a predetermined thickness as shown in FIG. 26 is interposed.

According to a third aspect of the present invention, a pair of tubular or solid workpieces W are detachably mounted on a fixed vice table 2 and a movable vice table 3 of a vice mechanism 1 via mounting members 4 and 4, respectively. The half-ring vise jaws 5 and 5 are used for a double-sided processing machine that is externally fitted and fixed from both sides and fixed at both ends by a pair of rotary cutting units 6 that can move forward and backward with respect to an end processing position of the workpiece W. In the method of manufacturing a vice jaw, as illustrated in FIG. 8, a pair of substantially half ring-shaped jaw materials 25, 25 in which a prepared hole 24 having an inner diameter smaller than the outer diameter of a work W to be processed at both ends is formed in advance. With the vice tables 2 and 3 set at predetermined clamp positions, respectively, the two ring-shaped jaws are attached to the fixed vice table 2 and the movable vice table 3 via the mounting member 4. Material 25 By processing the holes in the fitted inner diameter capable of the workpiece W to the lower hole 24 of the 25, and forming a substantially half-ring-shaped device the jaws 5,5.

According to a fourth aspect of the present invention, in the method for manufacturing a vice jaw used in the double-end processing machine according to the third aspect, a spacer 26 having a predetermined thickness is provided between opposed end surfaces of the pair of substantially half ring-shaped jaw materials 25, 25. Intervening.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a plan view showing a double-end processing machine.
FIG. 2 is a vertical sectional front view of the both-end processing machine. 1 in the figure
Is a vise mechanism. A pair of half ring-shaped vice jaws 5 and 5 are attached to a fixed vise table 2 and a movable vise table 3 which are disposed opposite to the left and right sides via attachment members 4 and 4, respectively. The pair of half ring-shaped vice jaws 5, 5 is used to clamp, for example, a tubular workpiece W from both right and left sides. The pair of half ring-shaped vice jaws 5, 5 form a clamp interference (gap) S between opposed end surfaces of the vice jaws 5, 5 when the work W is clamped by externally fitting the work W from both right and left sides. I do. A pair of rotary cutting units 6 and 6 are disposed at opposing positions on both sides of the vice jaws 5 and 5 of the vice mechanism 1, and the rotary cutting units 6 and 6 are used for the work W clamped by the vice mechanism 1. Both ends are machined, and are movable in the axial direction of the work W.

As shown in FIG. 2, the movable vice table 3 of the vice mechanism 1 is supported by a support frame 7 so as to be movable horizontally, and is linked to a hydraulic cylinder 8 provided on the support frame 7. Thus, the hydraulic cylinder 8 is moved toward and away from the fixed vise table 2 by the expansion and contraction operation of the hydraulic cylinder 8. The fixed vice table 2 is supported by the support frame 9, but the work W is moved on the rotation axis O of the rotary cutting unit 6 by the vice jaws 5, 5 attached together with the movable vice table 3 via the attachment members 4, 4. In order to be able to clamp, it is possible to adjust the distance movement with respect to its rotation axis O.

As shown in FIGS. 1 to 3, each rotary cutting unit 6 is reciprocally driven in parallel to the axial direction of the workpiece W clamped by the vice mechanism 1 on the base frame 11 by the reciprocating drive means 10. The workpiece W moves forward and backward with respect to the end processing position. The forward and backward driving means 10 includes a guide member 12 for guiding the movement of the rotary cutting unit 6 on the base frame 11, and a rotation along the guide member 12. A nut member 1 that includes a ball screw mechanism 13 that reciprocates the cutting unit 6 and a motor 15 that rotationally drives a screw shaft 14 of the ball screw mechanism 13.
6 is fixed to a movable base 17 of the rotary cutting unit 6,
The screw shaft 14 is operatively connected to a motor 15 via a transmission means (not shown) including a timing belt and a pulley.

As shown in FIG. 3, each rotary cutting unit 6 has a rotary spindle 30 driven by a motor 19 in a unit casing 18 fixed on a movable base 17. Workpiece W at the tip
In addition to an end machining tool such as a chamfering tool 20 for performing the end machining, a boring tool 21 (see FIG. 4) and a drilling tool are detachably mounted.

A method of manufacturing the half ring-type vice jaws 5 and 5 used in the double-end processing machine having the above-described configuration will be described in detail below.

First, as shown in FIGS. 4 and 5, a pair of half ring-shaped jaw members 25, 25 are prepared, and the pair of jaw members 25, 25 are attached to the mounting members 4, 4 by bolts 22.
Then, the two mounting members 4, 4 to which the jaw materials 25, 25 are fixed are mounted and fixed to the fixed vice base 2 and the movable vice base 3, respectively.

A pair of half ring-shaped jaw materials 25, 25
8 have the same outer diameter and thickness as the half ring-shaped vice jaws 5 and 5 as the products to be finally finished, and as shown in FIG. A pilot hole 24 having a screw hole 23 and an inner diameter smaller than the outer diameter of the workpiece W to be machined at both ends.
Is formed in advance. That is, the pair of half ring-shaped jaw materials 25, 25 are formed in the lower hole 2 having an inner diameter smaller than the inner diameter of the half ring-shaped vice jaws 5, 5, which are final products.
4, except that they have the same shape as the half ring-shaped vice jaws 5, 5.

The pair of half ring-shaped jaw members 25, 25 are fixed to the fixed vice table 2 via the mounting members 4, 4.
After being mounted on the movable vise table 3 and the movable vise table 3, respectively, the two vise tables 2 and 3 are set at predetermined clamp positions. That is, the two vice tables 2 and 3 are positioned and fixed at positions where the half ring-type vice jaws 5 and 5 as the final product can clamp the work W. Also, at this time, a gap of the clamp interference S is required between the opposing end faces of the two half ring-shaped jaw materials 25, 25.
To make the state as shown in FIG.

In this manner, the pair of substantially half ring-shaped jaw materials 25, 25 are separated from the mounting members 4, 4 under the same conditions as the two half ring-type vice jaws 5, 5 as the final product clamp the work W. On the other hand, a boring tool 21 is attached to the rotary spindle 30 of one of the rotary cutting units 6 as shown in FIG. Then, while the rotary cutting unit 6 is being operated and being fed by the advance / retreat driving means 10, the prepared hole 24 of the both half ring-shaped jaw materials 25, 25 is formed into a hole having an inside diameter that can be fitted to the work W. Thereby, the half ring-shaped vice jaws 5 and 5 dedicated to the vice mechanism 1 of the both-end processing machine can be formed.

Work W to be machined at both ends as described above
A pair of half ring-shaped vice jaws 5
5 is formed, the two half ring-shaped vice jaws 5,
While the movable vise table 3 is moved away from the fixed vise table 2 and the clamp is released while the movable vise table 3 is attached to the two vice tables 2 and 3 via the attachment members 4 and 4, the predetermined work W is clamped. After the positioning, the movable vise table 3
Is moved in a direction approaching the fixed vise table 2 and clamped in a state as shown in FIGS. At this time, for example, chamfering tools 20, 20 are mounted on the rotary spindles 30 of the rotary cutting units 6, 6, respectively, so that the rotary cutting units 6, 6 are moved forward with respect to the processing positions at both ends of the work W, respectively. Thereby, chamfering of both ends of the work W is performed.

According to the method of manufacturing the half ring type vice jaws 5 and 5 described above, the rotary cutting unit 6 of the both ends processing machine for processing both ends of the work W is used, and the vise table of the processing machine is used. By forming a hole in a pair of half ring-shaped jaw materials 25, 25 attached and fixed to the two, 3, the half ring-shaped vice jaws 5, 5 dedicated to the vice mechanism 1 of the both ends processing machine are formed. The axis of the workpiece W fixed by the half ring-shaped vice jaws 5, 5 manufactured in this way always coincides with the rotation center of the rotary cutting unit 6 in the both-end processing machine, and therefore, the end processing is performed. Accuracy can be improved.

Further, in this manufacturing method, a pair of half ring-shaped jaw materials 25, 25 in which a prepared hole 24 having an inner diameter smaller than the outer diameter of the work W is formed in advance, are attached to the fixed vice table 2 and the movable vice table 3. , Half-ringed jaw material 2
By machining the pilot holes 24 of the holes 5, 25 into holes having an inner diameter that can be fitted to the work W, the half ring-shaped vice jaws 5,
Since the vise jaws 5 are formed, the vice jaws 5, 5 can be manufactured easily and quickly.

The above-mentioned method is a method of using a half-ring jaw material in which a pilot hole 24 having an inner diameter smaller than the outer diameter of the work W is formed in advance, but as another method, FIG. As shown in FIGS. 4A and 4B, a pair of semi-circular disc-shaped jaw materials 27, 27 are fixed to a fixed vice table 2 and a movable vice table 3 shown in FIGS. With the vice tables 2 and 3 set at predetermined clamp positions, the rotary cutting unit 6 applies the workpiece W to the two semi-disk jaw materials 27 and 27.
By forming a hole (not shown) having an inside diameter that can be fitted to the outside, the half ring-shaped vice jaws 5 and 5 can be formed.

At this time, the two semi-disk jaw materials 27, 27
In order to make a hole with an inside diameter that can be fitted externally to the workpiece W, first, a drilling tool is attached to the rotary cutting unit 6 to make a pilot hole, and then the drilling tool is removed from the rotary cutting unit 6. It is sufficient to replace the boring tool 21 with a boring tool 21 as shown in FIG. According to this method, it is sufficient to form the semicircular disc-shaped jaw materials 27, 27, so that the jaw materials can be easily manufactured. Also, in this case,
As in the case shown in FIG.
Since a gap of the clamp interference is required between the opposing end surfaces of 7, 7 and 27, the provision of a spacer having a predetermined thickness in the gap facilitates the preparation and finishing of the prepared hole.

In the above embodiment, a case has been described in which a half ring-shaped vice jaw is manufactured. However, the vice jaw may be any as long as it has an inner peripheral surface fitted to the outer peripheral surface of a tubular or solid workpiece. The outer peripheral shape of the vice jaw is not necessarily limited to a circular shape, and may be formed in a square shape. Therefore, as for the shape of the jaw material, if the inner peripheral surface of each jaw material is formed in an arc shape that fits the outer peripheral surface of a tubular or solid work, the outer peripheral shape of the jaw material is limited to a circular shape. is not.

[0025]

According to the first aspect of the present invention, a pair of jaw materials are attached to the fixed vice table and the movable vise table via the mounting member, respectively, and both vise tables are set at predetermined clamp positions. By forming a hole with an inner diameter that can be externally fitted to a predetermined work with both jaw materials by the rotary cutting unit, a substantially half ring-shaped vice jaw is formed exclusively for the vice mechanism of the both-end processing machine. The axis of the work fixed by the half ring-type vice jaw always coincides with the rotation center of the rotary cutting unit in the two-end machining machine, so that the accuracy of the two-end machining can be improved.

According to a second aspect of the present invention, when forming a hole having an inner diameter that can be fitted to a workpiece in both jaw materials, a spacer having a predetermined thickness is interposed between opposing end surfaces of both jaw materials. This facilitates the preparation of the pilot hole and the finishing of the hole.

According to the third aspect of the present invention, a pair of jaw materials in which a pilot hole having an inner diameter smaller than the outer diameter of a work to be machined at both ends is formed in advance by a fixing vice table and a movable vice table via an attachment member. In the state where both vice tables are set at predetermined clamp positions, the lower holes of both jaw materials are machined into holes with an inner diameter that can be fitted to the work by a rotary cutting unit, thereby forming a machine for both ends of the machine. Because a vice mechanism is formed with an almost half ring-shaped vice jaw,
Similarly to the invention according to the first aspect, the axis of the work fixed by the vice jaw and the rotation center of the rotary cutting unit in the both-end machining machine can be made to coincide with each other, thereby improving the accuracy of both-end machining. In addition, in this method, in particular, in this method, the prepared hole formed in advance in the jaw material may be finished to a hole having an inner diameter that can be fitted to the work,
Vice jaws can be easily and quickly manufactured.

As described in the fourth aspect, by interposing a spacer having a predetermined thickness between the opposing end surfaces of both jaw materials, finishing of the hole is facilitated.

[Brief description of the drawings]

FIG. 1 is a plan view showing a double-end processing machine.

FIG. 2 is a vertical sectional front view of the double-end processing machine.

FIG. 3 is a front view showing a rotary cutting unit in the both-ends processing machine.

FIG. 4 is a partially enlarged plan view of the both-end processing machine shown in FIG. 1,
3 shows a method of manufacturing a vice jaw according to the present invention.

FIG. 5 is a sectional view taken along line XX of FIG. 4, illustrating a method of manufacturing a vice jaw according to the present invention.

FIG. 6 is a plan view similar to FIG. 4, showing the processing of both ends of a workpiece clamped by a vice jaw manufactured according to the method of the present invention.

FIG. 7 is a sectional view taken along line YY of FIG. 6;

FIG. 8A is a perspective view showing a pair of half ring-shaped jaw materials, and FIG. 8B is a perspective view showing a state in which the jaw materials are mounted on a mounting member.

9A is a perspective view showing a pair of semi-circular disc-shaped jaw materials, and FIG. 9B is a perspective view showing a state where the jaw materials are attached to an attachment member.

[Explanation of symbols]

W Work 1 Vice mechanism 2 Fixed vise table 3 Movable vise table 4 Mounting member 5 Half ring type vice jaw S Clamp interference of a pair of half ring type vice jaws 6 Rotary cutting unit 20 Chamfering tool 21 Boring tool 24 Half Prepared hole of split ring type jaw material 25 Half ring type jaw material 26 Spacer 27 Semi-disk type jaw material

Claims (4)

[Claims] 1. A tubular or solid work is externally fitted from both sides by a pair of substantially half ring-shaped vice jaws removably attached to a fixed vice table and a movable vise table of a vice mechanism via respective mounting members. A vice jaw used for a double-end machining machine that performs both-end machining with a pair of rotary cutting units that can move forward and backward with respect to the end machining position of the work, and a pair of jaw materials are attached to the mounting member. The fixed cutting vice base and the movable vice base are attached to each other via the base, and in a state where both vice bases are set at predetermined clamp positions, a hole having an inner diameter that can be externally fitted to the work is formed in both jaw materials by the rotary cutting unit. Thus, a method of manufacturing a vice jaw used in a double-end processing machine for forming a substantially half ring-shaped vise jaw. 2. The method according to claim 1, wherein a spacer having a predetermined thickness is interposed between opposing end faces of the pair of jaw materials. 3. A tubular or solid workpiece is externally fitted from both sides by a pair of substantially half ring-shaped vice jaws removably attached to a fixed vice table and a movable vice table of a vice mechanism via respective mounting members. A vice jaw used in a double-end processing machine that performs both-end processing by a pair of rotary cutting units that can move forward and backward with respect to the end processing position of the work, and the outer diameter of the work to be processed at both ends. A pair of substantially half ring-shaped jaw materials, each having a pre-formed hole with a small inner diameter, are attached to a fixed vice table and a movable vise table via a mounting member, respectively, with both vise tables set at predetermined clamp positions. Both ends forming a substantially half ring-shaped vice jaw by processing a pilot hole of both substantially half ring-shaped jaw materials into a hole having an inside diameter that can be fitted to the work by a rotary cutting unit. A method for manufacturing vice jaws used in processing machines. 4. The method according to claim 3, wherein a spacer having a predetermined thickness is interposed between opposing end surfaces of the pair of substantially half ring-shaped jaw materials.