JP3749806B2 - Differential case processing jig device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a differential case machining jig apparatus used when machining a spherical seat and a plane seat intersecting in a biaxial direction on a differential case.
[0002]
[Prior art]
Since the spherical seat and the plane seat formed in the differential case intersect the biaxial direction, that is, the X-axis (left-right) direction and the Y-axis (front-rear) direction, when processing these, the differential case Needs to be held in the machining portion with the direction changed between the X-axis direction and the Y-axis direction. By the way, conventionally, there have been processing jig devices such as a holding device that holds the differential case in the X-axis direction and the Y-axis direction and holds the differential case in the vertical direction, and a rotation restriction device that determines the rotation position of the held differential case. All were incorporated in the processing part.
[0003]
[Problems to be solved by the invention]
When the shape or size of the differential case is different due to the model, the above conventional ones must be exchanged and centered in a machined part with less work space. There were problems that required time and effort. It is an object of the present invention to obtain a novel differential case processing jig apparatus that solves the above-mentioned problems by providing a part of the processing jig apparatus on a movable base that is 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-rear) direction at the first processing position and the second processing position separated in the X-axis (left-right) direction in the processing portion. A lower support device is provided, a movable base that is movable in the X-axis direction with respect to the processing portion is provided, and a first press that presses the upper portion of the differential case that is supported by the movable base in the X-axis direction. A first engaging body that engages with the tool and the differential case to determine the rotational position thereof; a second pressing tool that presses the upper portion of the differential case supported in the Y-axis direction; and the differential case. Thus, a second engagement body that determines the rotational position of the second engagement body is provided. According to a second aspect of the present invention, there is provided a configuration in which a first actuating device for engaging and disengaging the first engaging body is provided on the movable base.
According to a third aspect of the present invention, when the movable base is moved into the processing portion, the movable base is fitted to the movable base from above and below in a support body that supports the movable base so as to be movable in the X-axis direction. A positioning pin that determines a machining position in the X-axis direction of the movable base and a pressing device that presses the movable base in the Y-axis direction are provided.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
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, and FIG. 4 is a sectional view taken along line IV-IV in FIG. FIG. 5 is a cross-sectional view of the pressing device according to the present invention.
[0006]
In FIG. 1, 1 is a processing machine which processes a spherical seat and a plane seat in the differential case 40, and has the processing part 2 in the left part. The processing section 2 is configured to form a housing portion (a) of the differential case 40 by standing and fixing the four support columns 4 in a tower shape on the left portion of the machine base 3, and a jig device in the housing portion (a). 5 holds the differential case 40 in the X-axis (left-right) direction and the Y-axis (front-rear) direction, and crosses the differential case 40 in a biaxial direction by a tool (not shown) that advances and retreats from the front-rear direction. A spherical seat and a plane seat are processed.
[0007]
The jig device 5 includes a lower support device 6 that holds the differential case 40 in the vertical direction, first and second pressing tools 14 and 15, and first and second engagement devices that determine the rotational position of the differential case 40. 17 and 22. As shown in FIG. 1, the lower support device 6 is fixed to the upper end of a rod 7a of an elevating cylinder 7 mounted on the machine base 3 by projecting a rotating arm 8 in a radial direction. A V-shaped receiving block 9 for receiving the lower portion of the differential case 40 at two places in the axial direction is detachably mounted on the upper surface of the rotating end of the arm 8, and the rotating arm 8 is centered on the rod 7 a by the rotating device 10. And rotate within an angle range of about 90 degrees.
[0008]
The rotating device 10 has a link 10a rotatably attached to the lower surface of the rotating end portion of the rotating arm 8, and the link 10a is connected to a rotating cylinder 10b attached to the rear part of the machine base 3 so as to rotate the link 10a. By extending and contracting the cylinder 10b, the receiving block 9 is moved in the X-axis (left and right in FIG. 1) direction via the link 10a and the rotating arm 8, that is, the first processing position on the right side and the first processing position on the left side. 2 and moving the receiving surface of the receiving block 9 in the X-axis direction at the first processing position and in the Y-axis direction at the second processing position, whereby the differential case 40 is moved to the right side. The first machining position is supported in the X-axis direction, and the left second machining position is supported in the Y-axis direction.
[0009]
The first and second pressing tools 14 and 15 that press the upper portion of the differential case 40 and the first and second engaging devices 17 and 22 that determine the rotational position of the differential case 40 are as follows. That is, as shown in FIG. 1, a rail 12 is protruded and fixed to the upper side of the processing portion 2, that is, an upper portion of the support 4, and a movable base 13 is suspended on the rail 12 so as to be movable in the left and right (X axis) directions. To support. The movable base 13 is formed in a rectangular shape in plan view as shown in FIG. 2, and the first and second pressing tools 14 and 15 are attached to the lower surface of the movable base 13 so as to be detachable from each other.
[0010]
As shown in FIG. 3, the first and second pressing tools 14 and 15 are composed of an inverted V-shaped block that presses the upper portion of the differential case 40 downward at two locations in the axial direction. The tool 14 is capable of pressing the left and right upper surfaces of the differential case 40 supported by the lower support device 6 in the X-axis (left-right) direction with the receiving surface directed in the left-right direction, The tool 14 has its receiving surface directed in the front-rear direction, and can press the upper surfaces of the differential case 40 supported by the lower support device 6 in the Y-axis (front-rear) direction.
[0011]
Further, the first engagement device 17 (FIG. 3) is provided on the lower surface of the right end portion of the movable base 13, and the second engagement body 23 (FIG. 4) of the second engagement device 22 is provided on the lower surface of the left end side portion of the movable base 13. ). As shown in FIG. 3, the first engagement device 17 includes a first engagement body (reference pin) that is moved rightward and leftward by a first cylinder (first operation device) 19 to the right of the first pressing tool 14. ) Install 18. The first engagement body 18 has a predetermined reference hole (bolt hole) opened in the peripheral portion of the flange portion 40a with respect to the differential case 40 pressed by the first pressing tool 14 when moved to the left. ) To determine the rotational position around the X-axis center of the differential case 40, and the position of the spherical seat 41 formed on the inner surface of the barrel 40b of the differential case 40 is a tool for processing the spherical seat (illustrated). (Omitted). Reference numeral 20 denotes a detector dog for detecting the left-right movement of the first engagement body 18.
[0012]
As shown in FIG. 4, the second engagement device 22 is detachably attached to a support block 23 on the lower surface of the side of the movable base 13 located immediately after the second pressing tool 15 (leftward in FIG. 4). The pin-shaped second engagement body 24 is attached to the support block 23 so as to be slidable in the Y-axis direction (left-right direction in FIG. 4), and is attached to the support block 23 by the link arm 25 and the second cylinder (second operating device) 26. Move in the axial direction. When the second engaging body 24 is moved forward (rightward in FIG. 4), the second engaging body 24 has a predetermined opening that is open at the peripheral edge of the flange portion 40a with respect to the differential case 40 pressed by the second pressing tool 15. A rotational position around the Y-axis center of the differential case 40 is determined by engaging with a reference hole (bolt hole), and the position of the flat seat formed on the inner surface of the body portion 40b of the differential case 40 is used for processing the flat seat. These tools are made to face each other (both not shown).
[0013]
The link arm 25 is formed in a T shape integrally including a lower piece 25a, a rear piece 25b, and a front piece 25c, and can be rotated around the X axis via a fulcrum pin 27 on the support block 23. The lower piece 25a of the link arm 25 is engaged with the rear portion of the second engaging body 24. Further, the second cylinder (second operating device) 26 is fixed upright on the support 30 that supports the movable base 13, and the rod 26a is engaged with the rear piece 25b of the link arm 25 so that the link arm 25 is supported. The pin 27 is rotated around a predetermined angle.
[0014]
The rod 26a is adapted to engage with the rear piece 25b when the movable base 13 is moved to the processing portion 2 side. Further, a return pin 29 that is elastically pressed downward by a spring 28 is attached to the movable base 13, and the front piece 25 c of the link arm 25 is pressed downward by the return pin 29 to return the link arm 25 to the return direction (see FIG. 4 in the clockwise direction).
[0015]
When the movable base 13 is moved to the processing portion 2 side, the movable base 13 is locked to the support 30 fixed to the upper portion of the support column 4 by the positioning pin 31 and the pressing device 33 so as not to move. 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 in which the positioning pin 31 can be fitted and removed is formed in the movable base 13. In this example, the positioning pin 31 and the reference hole 32 are provided at two positions on both ends in the X-axis direction. As a result, when the movable base 13 is moved to the processing portion 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.
[0016]
Further, a pressing device 33 for pressing the movable base 13 backward (Y-axis direction) is attached to the side (front) side of the support 30. The pressing device 33 comprises a toggle clamp, and the push rod 33b is advanced and retracted in the Y-axis direction (left and right direction in FIG. 5) by rotating the operation lever 33a between a horizontal position and an upper position. Then, after the positioning pin 31 is fitted in the reference hole 32 of the movable base 13, the operation lever 33a is tilted to the horizontal position to move the push rod 33b to the left in FIG. 5, and the movable base 13 is moved sideways. (Left) is pressed against the positioning pin 31 from the side to position the movable base 13 with high accuracy and prevent vibration caused by the processing load on the spherical and planar seats. . 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.
[0017]
Next, the operation mode of the above embodiment will be described. First, the movable base 13 is moved to the processing portion 2 side, and the positioning pin 31 and the pressing device 33 described above are operated to fix the movable base 13 to the support 30. Next, the elevating 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 10b is shortened to move the receiving block 9 to the right side, and then the lifting cylinder 7 is extended to hold the differential case 40 at the first processing position.
[0018]
That is, the differential case 40 is directed in the X-axis direction on the right side of the processing portion 2 and is held by the receiving block 9 and the first pressing tool 14 of the movable base 13 from above and below, and at the same time the first engagement device 17 is The first engagement body 18 is operated to be fitted into the reference hole of the flange portion 40a of the differential case 40, and the rotational position thereof is positioned. Next, the spherical seat 41 is machined at a predetermined position of the differential case 40 by operating the spherical seat machining tool.
[0019]
After the spherical seat processing is completed, the operation of the first engagement device 17 is released, and then the elevating cylinder 7 of the lower support device 6 is shortened and the rotation cylinder 10b of the rotation device 10 is extended. Then, the receiving block 9 is moved to the left side in FIG. 1, and then the lifting cylinder 7 is extended to hold the differential case 40 at the second processing position. That is, the differential case 40 is directed in the Y-axis direction on the left side of the processing portion 2, and is sandwiched between the receiving block 9 and the second pressing tool 15 of the movable base 13 from the top and bottom, and at the same time, the second engagement device 22 is The second engagement body 24 is actuated to fit into the reference hole of the flange portion 40a of the differential case 40, and the rotational position thereof is positioned. Next, the flat seat is processed at a predetermined position of the differential case 40 by operating the flat seat processing tool.
[0020]
After the flat seat processing is completed, the second engagement device 22 is released and the elevating cylinder 7 is shortened to lower the processed differential case 40 in the Y-axis direction to the discharge position. Let Next, the dispensing device 35 is operated to discharge the differential case 40 to the left side of the processing unit 2.
[0021]
When the shape or size of the differential case 40 changes due to the change of the model, the movable base 13 is moved to the right in FIG. 1 to be retracted from the processing unit 2 and attached to the movable base 13 in this state. Also, the jigs such as the first and second pressing tools 14 and 15, the first engagement device 17, or the second engagement body of the second engagement device 22 are exchanged with ones suitable for the changed model. In this case, a cassette jig in which a jig suitable for the changed model is attached to another movable base 13, and when changing the model, this cassette jig may be replaced with the rail 12.
[0022]
【The invention's effect】
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 processed portion, and presses the differential case directed in the X-axis and Y-axis directions to the movable base. Since the first and second pressing members and the first and second engaging bodies that determine the rotational position of the differential case are provided, when the shape or size of the differential case changes due to model changes, etc. It is possible to perform operations such as exchanging a portion to be matched and centering in a wide work space, and labor and labor are reduced.
In the invention according to claim 2, since the first operating device for engaging and disengaging the first engaging body is provided on the movable base, the structure is simplified.
In the invention according to claim 3, when the movable base is moved into the processing portion, the movable base is connected to the support body with high precision and strength, so that the movable base does not vibrate due to the processing load. , Processing accuracy is increased [Brief description of drawings]
FIG. 1 is a side view showing an embodiment of the present invention.
FIG. 2 is a plan view of a movable base portion according to the present invention.
FIG. 3 is a side view of FIG. 2;
4 is a cross-sectional view taken along the line IV-IV in FIG.
FIG. 5 is a cross-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 apparatus 6 Lower support apparatus 7 Lifting cylinder 7a Rod 8 Rotating arm 9 Receiving block 10 Rotating apparatus 10a Link 10b Rotating cylinder 12 Rail 13 Movable base 14 First pressing tool 15 Second pressing tool 17 First engaging device 18 First engaging body 19 First cylinder (first operating device)
20 dog 22 second engagement device 23 support block 24 second engagement body 25 link arm 25a lower piece 25b rear piece 25c front piece 26 second cylinder (second actuator)
26a rod 27 fulcrum pin 28 spring 29 return pin 30 support 31 positioning pin 32 reference hole 33 pressing device 33a operating lever 33b pushing rod 35 payout device

Claims (3)

The differential case (40) is supported in the X-axis direction and the Y-axis (front-rear) direction at the first processing position and the second processing position separated in the X-axis (left-right) direction in the processing unit (2). A lower support device (6) is provided, a movable base (13) that is movable in the X-axis direction is provided for the processing portion (2), and the movable base (13) is supported toward the X-axis direction. A first pressing member (14) that presses the upper portion of the differential case (40), a first engagement body (18) that engages with the differential case (40) to determine the rotational position thereof, and the Y-axis direction And a second pressing member (15) that presses the upper portion of the differential case (40) supported by the second case and a second engagement body (24) that engages with the differential case (40) and determines the rotational position thereof. Defare characterized by Processing jig unit's Charlottenburg case. The differential case machining jig device 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). When the movable base (13) is moved into the processing part (2), the movable base (13) is moved to the support (30) that supports the movable base (13) so as to be movable in the X-axis direction. A positioning pin (31) that fits in the vertical direction to determine the machining position of the movable base (13) in the X-axis direction and a pressing device (33) that presses the movable base (13) in the Y-axis direction are provided. 3. A differential case processing jig apparatus according to claim 1, wherein the processing tool is a differential case.

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