JP2001047333A - Differential case working jig device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate operations such as change, alignment, etc., of a jig to make location of a differential case. SOLUTION: A lower supporting device 6 is to support a differential case 40 both in the X-axis direction (to the left and right) and Y-axis direction (fore and aft) in the first and second positions apart in the X-axis direction in a working part 2, wherein the configuration includes a first pressing tool 14 to press the upper part of the differential case 40 supported in the X-axis direction on a movable base 13 capable of moving in the X-axis direction relative to the working part 2, a first engaging piece 18 to be engaged with the differential case 40 for fixing its rotational position, a second pressing tool 15 to press the upper part of the differential case 40 supported in the Y-axis direction, and a second engaging piece to be engaged with the differential case 40 for fixing its rotational position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a jig device for processing a differential case, which is used for processing a spherical case and a plane seat intersecting biaxially in a differential case.

[0002]

2. Description of the Related Art A spherical seat and a flat seat formed on a differential case intersect in a biaxial direction, that is, an X-axis (left-right) direction and a Y-axis (front-back) direction. In such a case, it is necessary to hold the differential case in the machined part while changing its direction in the X-axis direction and the Y-axis direction.
Conventionally, processing jig devices such as a holding device for holding the differential case in the X-axis direction and the Y-axis direction and holding the differential case from above and below, and a rotation regulating device for determining the rotation position of the held differential case. All were incorporated in the processing section.

[0003]

In the above-mentioned prior art, when the shape or size of the differential case is different due to the type of the model, work such as replacement of a part corresponding to the difference and centering is performed in a work space. It has to be performed in a small number of processing parts, and there is a problem that requires labor and labor. An object of the present invention is to provide a new differential case processing jig device which solves the above-mentioned problem by providing a part of the processing jig device on a movable base movable with respect to the processing portion.

[0004]

Means for Solving the Problems The present invention is configured as follows to achieve the above object. That is, according to the first aspect of the present invention, the differential case is directed in the X-axis direction and the Y-axis (front-back) direction at the first processing position and the second processing position separated in the X-axis (left-right) direction in the processing portion. A first support for providing a lower supporting device for supporting, a movable base movable in the X-axis direction with respect to the processing portion, and pressing an upper part of a differential case supported on the movable base in the X-axis direction; Tool and a first engaging body that engages with the differential case to determine the rotational position thereof,
A second pressing tool that presses the upper part of the differential case supported in the axial direction and a second engaging body that engages with the differential case and determines a rotational position of the differential case are provided. The invention according to claim 2 is configured such that a first operating device for engaging and disengaging the first engagement body is provided on the movable base. Claim 3
The invention is characterized in that when the movable base is moved into a processing portion on a support that movably supports the movable base in the X-axis direction, the movable base is fitted to the movable base from above and below and the X of the movable base is A positioning pin for determining a processing position in the axial direction and a pressing device for pressing the movable base in the Y-axis direction are provided.

[0005]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a side view showing an embodiment of the present invention, FIG. 2 is a plan view of a movable base according to the present invention, FIG. 3 is a side view of FIG. 2, FIG. 4 is a cross-sectional view taken along line IV-IV of FIG.
FIG. 5 is a sectional view of a pressing device according to the present invention.

In FIG. 1, reference numeral 1 denotes a processing machine for processing a spherical seat and a flat seat on a differential case 40, and has a processing portion 2 on a left portion. The processing portion 2 is formed by stably fixing four columns 4 on the left side of the machine base 3 in a tower shape to form a housing portion (A) of a differential case 40, and a jig device is formed in the housing portion (A). 5, the differential case 40 is held in the X-axis (left-right) direction and the Y-axis (front-rear) direction, and intersects the differential case 40 biaxially with a tool (not shown) that moves forward and backward from the front-rear direction. The spherical seat and the flat seat are machined.

The jig device 5 comprises a lower support device 6 for holding the differential case 40 from above and below, and
First and second engagement devices 17, 22 for determining the rotational positions of the second pressing members 14, 15 and the differential case 40
Having. The lower support device 6 is, as shown in FIG.
A turning arm 8 is fixed to the upper end of a rod 7a of an elevating cylinder 7 attached to the machine base 3 so as to protrude in the radial direction, and a differential case 40 is provided on the upper surface of the turning end of the turning arm 8. A V-shaped receiving block 9 which receives the lower portion at two locations in the axial direction is detachably attached, and the rotating arm 8 is rotated by a rotating device 10 about an angle range of about 90 degrees around the rod 7a.

In the rotating device 10, a link 10a is rotatably mounted on the lower surface of the rotating end of the rotating arm 8, and the link 10a is mounted on the rear portion of the machine base 3.
b, the receiving cylinder 9 is moved in the X-axis (left and right directions in FIG. 1) via the link 10a and the rotating arm 8 by extending and retracting the rotating cylinder 10b. 1 and the receiving surface of the receiving block 9 is directed in the X-axis direction at the first processing position and in the Y-axis direction at the second processing position. Thereby, the differential case 40 is supported in the first processing position on the right side in the X-axis direction,
Further, it is supported in the Y-axis direction at the second processing position on the left.

The first and second pressing members 14 and 15 for pressing the upper part of the differential case 40 and the first and second engaging devices 17 and 22 for determining the rotational position of the differential case 40 are as follows. I have. That is, as shown in FIG.
2 is protruded and fixed to the right, and a movable base 13 is suspended and supported on the rail 12 so as to be movable in the left-right (X-axis) direction. The movable base 13 is formed in a rectangular shape in plan view as shown in FIG.
The pressing members 14 and 15 are detachably attached to each other while being separated from each other left and right.

The first and second pressing members 14, 15 are shown in FIG.
As shown in FIG. 3, the upper part of the differential case 40 is formed by an inverted V-shaped block that presses the upper part of the differential case 40 at two points in the axial direction. The upper surface of the left and right two places of the differential case 40 supported in the X-axis (left-right) direction by the device 6 can be pressed, and the second pressing member 14 on the left side faces the receiving surface in the front-rear direction and supports the lower part. The upper surface of the front and rear two places of the differential case 40 supported in the Y-axis (front-back) direction by the device 6 can be pressed.

A first engaging device 17 (FIG. 3) is provided on the lower surface of the right end of the movable base 13 and the movable base 13
The second engaging body 23 of the second engaging device 22
(Fig. 4) is attached. The first engagement device 17 is shown in FIG.
As shown in (1), a first engagement body (reference pin) 18 that is moved in the left-right direction by a first cylinder (first operating device) 19 is attached to the right side of the first pressing tool 14. When the first engaging member 18 is moved to the left, the first engaging member 18 is provided with a predetermined reference hole (bolt hole) formed in the peripheral edge of the flange portion 40a with respect to the differential case 40 pressed by the first pressing member 14. ) To determine the rotational position of the differential case 40 about the X-axis, and determine the position of the spherical seat 41 formed on the inner surface of the body 40b of the differential case 40 by a tool for machining a spherical seat (illustrated in FIG. (Omitted). Reference numeral 20 denotes a dog of a detector that detects the left-right movement of the first engagement body 18.

As shown in FIG. 4, the second engaging device 22 attaches and detaches the support block 23 to and from the lower surface of the side of the movable base 13 located immediately after the second pressing member 15 (to the left in FIG. 4). And a pin-shaped second
The engagement body 24 is slidably mounted in the Y-axis direction (the left-right direction in FIG. 4), and is moved in the Y-axis direction by the link arm 25 and the second cylinder (second actuator) 26. The second engagement body 24 is located forward (rightward in FIG. 4).
When the differential case 40 is moved to the differential case 40, the differential case 40 engages with a predetermined reference hole (bolt hole) drilled in the peripheral portion of the flange portion 40a. The rotational position about the Y axis is determined, and the body 4 of the differential case 40 is determined.
The position of the plane seat formed on the inner surface of the plane 0b faces a tool for processing the plane seat (both not shown).

The link arm 25 includes a lower piece 25a,
A rear piece 25b and a front piece 25c are formed in a T-shape integrally, and this is attached to the support block 23 via a fulcrum pin 27 so as to be rotatable about the X-axis, and a lower piece 25a of the link arm 25 is formed. Is engaged with the rear part of the second engagement body 24. Further, a support 30 for supporting the movable base 13
A second cylinder (second operating device) 26 is fixed to the upright, and its rod 26a is attached to the rear piece 25b of the link arm 25.
To rotate the link arm 25 by a predetermined angle about the fulcrum pin 27.

The rod 26a is connected to the movable base 13
Is engaged with the rear piece 25b when it is moved to the processing portion 2 side. Also, a return pin 29 which is elastically pressed downward by a spring 28 is attached to the movable base 13, and the front piece 25c of the link arm 25 is pressed downward by the return pin 29 to move the link arm 25 in a return direction (FIG. (4) (Rotating right direction).

When the movable base 13 is moved to the processing portion 2, the movable base 13 is immovably locked by a positioning pin 31 and a pressing device 33 on a support 30 fixed on the upper portion of the column 4. That is, as shown in FIG. 5, a positioning pin (locating pin) 31 that is moved up and down by a cylinder is attached to the support 30, and a reference hole 32 is formed in the movable base 13 so that the positioning pin 31 can be inserted and removed. In the present example, the positioning pin 31 and the reference hole 32 are provided at two places at both ends in the X-axis direction, so that when the movable base 13 is moved to the processing section 2 side, the positioning pin 31 is moved downward. The movable base 13 is fitted into the reference hole 32 to restrict the movement of the movable base 13 in the X-axis direction and the Y-axis direction.

A pressing device 33 for pressing the movable base 13 rearward (Y-axis direction) is attached to the side (front) of the support 30. The pressing device 33 is formed by a toggle clamp, and moves the operating rod 33a between the horizontal position and the upper position to move the pressing rod 33b in the Y-axis direction (the left-right direction in FIG. 5). After the positioning pin 31 is fitted into the reference hole 32 of the movable base 13, the operation lever 33a is tilted to the horizontal position, and the push rod 33b is advanced leftward in FIG. (Left) to bring the reference hole 32 into contact with the positioning pin 31 from the side, to position the movable base 13 with high accuracy, and to prevent vibration due to the processing load of the spherical seat and the flat seat. . In FIG. 1, reference numeral 35 denotes a payout device that discharges the differential case 40 that has been processed by the processing unit 2 to the rear.

Next, the operation of the above embodiment will be described. First, the movable base 13 is moved to the processing section 2 side, and the above-mentioned positioning pin 31 and the pressing device 33 are operated to fix the movable base 13 to the support 30. Next, the lifting cylinder 7 of the lower support device 6 is shortened, and the rotating cylinder 10b of the rotating device 10 is extended to move the receiving block 9 to the left side in FIG. The differential case 40 is placed on the receiving block 9. Next, the rotating cylinder 1
After the receiving block 9 is moved to the right side by shortening the operation position 0b, the lifting cylinder 7 is extended to hold the differential case 40 at the first processing position.

That is, the differential case 40 is oriented in the X-axis direction on the right side of the processing portion 2 and is sandwiched between the receiving block 9 and the first pressing member 14 of the movable base 13 from above and below. By operating the device 17, the first engagement body 18 is fitted into the reference hole of the flange portion 40a of the differential case 40, and its rotational position is determined. Next, the spherical seat 41 is machined at a predetermined position of the differential case 40 by operating a tool for machining the spherical seat.

After the spherical seat machining is completed, the operation of the first engagement device 17 is released, and then the lifting / lowering cylinder 7 of the lower support device 6 is shortened and the rotating device 1 is rotated.
1, the receiving block 9 is moved to the left side in FIG. 1, and then the elevating cylinder 7 is extended to hold the differential case 40 at the second processing position. That is, the differential case 40 is oriented in the Y-axis direction on the left side of the processing section 2, and the receiving block 9 and the second pressing member 15 of the movable base 13 are moved.
Then, the second engaging device 22 is operated to simultaneously fit the second engaging body 24 into the reference hole of the flange portion 40a of the differential case 40, thereby positioning the rotational position. Next, the plane seat is machined at a predetermined position of the differential case 40 by operating the plane seat machining tool.

After the completion of the flat seating, the second engaging device 22 is released and the lifting cylinder 7 is lifted.
Is shortened, and the completed differential case 40 is lowered to the discharge position in a state facing the Y-axis direction. Next, the dispensing device 35 is operated to discharge the differential case 40 to the left of the processing unit 2.

When the shape or size of the differential case 40 is different due to the change of the model, the movable base 13 is moved to the right in FIG. The jigs such as the first and second pressing members 14 and 15, the first engagement device 17 or the second engagement body of the second engagement device 22 attached to the device 13 are exchanged with those suitable for the changed model. In this case, a cassette jig in which a jig suitable for the model to be changed is prepared on another movable base 13, and this cassette jig may be replaced with the rail 12 when the model is changed.

[0022]

As is apparent from the above description, the invention according to claim 1 of the present application is provided with a movable base that moves outward with respect to the processing portion, and the movable base is oriented in the X-axis and Y-axis directions. First and second pressing the differential case
Since the first and second engaging members for determining the rotational position of the pressing tool and the differential case are provided, when the shape or size of the differential case is different due to a model change or the like, replacement of a part corresponding to the shape or size is performed. Work such as centering can be performed in a large work space,
The labor and effort will be reduced. Further, in the invention according to claim 2, since the first actuating device for engaging and disengaging the first engagement body is provided on the movable base, the structure is simplified. According to the third aspect of the present invention, when the movable base is moved into the processing section, the movable base is connected to the support with high accuracy and rigidity, so that the movable base does not vibrate due to the processing load. , Machining accuracy is increased

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of the present invention.

FIG. 2 is a plan view of a movable base according to the present invention.

FIG. 3 is a side view of FIG. 2;

FIG. 4 is a sectional view taken along line IV-IV of FIG. 2;

FIG. 5 is a sectional view of a pressing device according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Processing machine 2 Processing part 3 Machine stand (A) Storage part 5 Jig device 6 Lower support device 7 Elevating cylinder 7a Rod 8 Rotating arm 9 Receiving block 10 Rotating device 10a Link 10b Rotating cylinder 12 Rail 13 Movable base 14 1st pressing tool 15 2nd pressing tool 17 1st engagement device 18 1st engagement body 19 1st cylinder (1st operating device) 20 dog 22 2nd engagement device 23 support block 24 2nd engagement body 25 link arm 25a Lower piece 25b Rear piece 25c Front piece 26 Second cylinder (second operating device) 26a Rod 27 Support pin 28 Spring 29 Return pin 30 Support 31 Positioning pin 32 Reference hole 33 Pressing device 33a Operating lever 33b Push rod 35 Discharge device

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Michio Hitomi Inventor F-term in Nissan Motor Co., Ltd. 2 Takaracho, Kanagawa-ku, Yokohama-shi, Kanagawa 3C016 CB07 3C036 AA10 KK03 3J063 AB13 BA01 BB50 CA05 CB06 XA10

Claims (3)

[Claims] 1. A differential case (40) is moved in an X-axis direction and a Y-axis (front-back) direction at a first processing position and a second processing position separated in an X-axis (left-right) direction in a processing section (2). And a lower support device (6) for supporting the movable base (1) movable in the X-axis direction with respect to the processing portion (2).
3), which is engaged with a first pressing tool (14) for pressing an upper part of a differential case (40) supported on the movable base (13) in the X-axis direction and the differential case (40). The first to determine the rotational position of the lever
A second pressing member (15) for pressing an upper part of an engaging body (18), a differential case (40) supported in the Y-axis direction, and a rotational position of the differential case (40) engaged therewith; A jig device for processing a differential case, wherein a second engaging body (24) for determining the condition is provided. 2. The differential case according to claim 1, wherein a first operating device (19) for engaging and disengaging the first engaging body (18) is provided on the movable base (13). Fixture device. 3. A support (30) that supports the movable base (13) so as to be movable in the X-axis direction.
When 3) is moved into the processing section (2), the movable base (13) is fitted into the movable base (13) from above and below, and
Positioning pin (31) for determining the processing position in the X-axis direction
And a pressing device (33) for pressing the movable base (13) in the Y-axis direction.
A jig device for processing the differential case described in the above.