Machining and positioning mechanism for automobile differential mechanism

Abstract

The utility model discloses a machining and positioning mechanism for an automobile differential mechanism, relates to the technical field of positioning tools, and aims to provide the machining and positioning mechanism for the automobile differential mechanism, which can be used for clamping and positioning and internally supporting and positioning a differential mechanism shell, and has the technical key points that the machining and positioning mechanism comprises the shell, and a working hole penetrating up and down is formed in the center of the shell; a plurality of supporting parts are arranged in the outer shell in an annular array mode, positioning parts used for positioning the differential mechanism outer shell are arranged on the supporting parts, and driving parts used for driving the positioning parts to move horizontally through the supporting parts are arranged below the supporting parts. When the outer portion of the differential mechanism shell needs to be machined, the positioning parts arranged in an annular array mode are arranged in the differential mechanism shell, the convex arc face on the outer side of the U-shaped plate is attached to the interior of the differential mechanism shell, and then the driving part drives the U-shaped plate to be unfolded outwards through the supporting part so that the U-shaped plate can position and fix the inner support of the differential mechanism shell.

Description

Technical Field

[0001] This utility model relates to the field of positioning tooling technology, specifically to a positioning mechanism for machining automotive differentials. Background Technology

[0002] A car differential is a device used for power distribution and transmission in a vehicle to achieve differential driving. Commonly used differentials are inter-wheel differentials and inter-axle differentials. Their structure mainly consists of an outer metal shell and an inner differential gear. The shell is usually cast and requires machining and drilling before it can be used. Both the outer and inner sides of the differential shell need to be machined. When machining the outer side of the differential, it needs to be fixed from the inside, and when machining the inner side of the differential, it needs to be fixed from the outside. This results in different clamping and internal support mechanisms being used when machining the differential shell. On the one hand, different mechanisms have mechanical errors, and on the other hand, it increases the number of equipment and costs. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] To address the shortcomings of existing technologies, this utility model provides an automotive differential machining positioning mechanism that can clamp and position the differential housing and provide internal support positioning.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, the present invention provides the following technical solution: a machining and positioning mechanism for an automotive differential, comprising a housing, wherein a working hole is provided in the center of the housing, and a plurality of supporting components are arranged in a circular array inside the housing, wherein a positioning component for positioning the differential housing is provided on the supporting component, and a driving component is provided below the supporting component to drive the positioning component to move horizontally.

[0007] The positioning component includes a U-shaped plate on the support component. One side of the U-shaped plate has a convex arc surface that fits against the inner wall of the differential housing, and the other side has a concave arc surface that fits against the outer wall of the differential housing. Both the convex and concave arc surfaces are provided with brackets for supporting the differential housing.

[0008] Preferably, the support component includes a slide rail disposed within the housing, a slide plate slidably disposed within the slide rail, a support frame disposed within the slide plate, a mounting platform connected to a U-shaped plate at the top of the support frame, and a pin cooperating with a drive component at the bottom of the support frame.

[0009] Preferably, the driving component includes a rotating shaft rotatably disposed within the housing, a disc disposed on the rotating shaft, a spiral plate disposed on the disc cooperating with a pin, and a power assembly disposed at the lower end of the rotating shaft.

[0010] Preferably, the power assembly includes a worm gear mounted on a rotating shaft, a worm meshing with the side of the worm gear, a torque detector connected to the end face of the worm, and a motor connected to the housing at the other end of the torque detector.

[0011] Preferably, the U-shaped plate is detachably connected to the supporting component, and the U-shaped plate has a insertion hole at its center and a square groove on the side of the insertion hole. The supporting component is provided with a locking component that fixes the U-shaped plate through the insertion hole and the square groove.

[0012] Preferably, the locking component includes a plug rod disposed on the support component, the side of the plug rod is provided with a square part that mates with the square groove, the top of the plug rod is provided with a horizontally rotatable rotating part, and the side of the rotating part is provided with a locking block corresponding to the square groove.

[0013] Preferably, the U-shaped plate is provided with a handle for easy handling.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, this utility model provides a machining and positioning mechanism for automotive differentials, which has the following beneficial effects:

[0016] 1. By setting concave and convex arc surfaces, when it is necessary to process the outside of the differential housing, the positioning components set in the ring array are placed inside the differential housing, and the convex arc surface on the outside of the U-shaped plate is fitted with the inside of the differential housing. Then, the drive component drives the U-shaped plate to unfold outward through the support component, so that it supports and fixes the inside of the differential housing.

[0017] When the interior of the differential housing needs to be machined, the positioning components arranged in a ring array are placed outside the differential, so that the concave arc surface of the inner side of the U-shaped plate fits against the exterior of the differential housing. Then, the drive component drives the U-shaped plate to retract inward through the support component, so that it clamps, positions and fixes the differential housing. This achieves the effect of clamping and fixing the differential housing inside and out with one set of tooling, reducing the number of equipment required while ensuring the same error value.

[0018] 2. By setting up a disc and a spiral plate, when it is necessary to drive the support component to move, the power unit drives the disc to rotate through the shaft, and the disc directly drives the spiral plate to rotate. When the spiral plate rotates, it will apply force to the pin in the support component. Depending on the rotation direction of the spiral plate, the pin will drive the support frame to move towards the center or edge of the disc, so as to achieve the purpose of driving the positioning component to move horizontally, and driving the clamping or inner differential housing. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0020] Figure 2 This is a schematic diagram showing the connection between the drive component and the support component of this utility model;

[0021] Figure 3 This is a three-dimensional schematic diagram of the positioning component of this utility model;

[0022] Figure 4 This is a three-dimensional schematic diagram of the support component of this utility model;

[0023] Figure 5 This is a three-dimensional schematic diagram of the power component of this utility model.

[0024] In the diagram: 1. Outer shell; 2. Supporting component; 201. Slide rail; 202. Slide plate; 203. Support frame; 204. Pin shaft; 205. Mounting platform; 3. Positioning component; 301. U-shaped plate; 302. Convex arc surface; 303. Concave arc surface; 304. Bracket; 305. Insertion hole; 306. Square groove; 307. Handle; 4. Working hole; 5. Driving component; 501. Disc; 502. Spiral plate; 503. Power component; 5031. Worm gear; 5032. Worm; 5033. Motor; 5034. Torque detector; 504. Rotating shaft; 6. Locking component; 601. Insertion rod; 602. Square part; 603. Rotating part; 604. Locking block. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-5 A machining and positioning mechanism for an automotive differential includes a housing 1. The housing 1 has a through working hole 4 at its center. Multiple support components 2 are arranged in a ring array inside the housing 1. The support components 2 are provided with positioning components 3 for positioning the differential housing 1. The support components 2 are provided with a driving component 5 below the support components 2, which drives the positioning components 3 to move horizontally. The positioning component 3 includes a U-shaped plate 301 on the support components 2. One side of the U-shaped plate 301 is provided with a convex arc surface 302 that fits against the inner wall of the differential housing 1, and the other side is provided with a concave arc surface 303 that fits against the outer wall of the differential housing 1. Both the convex arc surface 302 and the concave arc surface 303 are provided with brackets 304 for supporting the differential housing 1.

[0027] By setting concave arc surface 303 and convex arc surface 302, when it is necessary to process the outside of the differential housing 1, the positioning component 3 arranged in a ring array is placed inside the differential housing 1, and the convex arc surface 302 on the outside of the U-shaped plate 301 is fitted with the inside of the differential housing 1. Then the driving component 5 drives the U-shaped plate 301 to unfold outward through the supporting component 2, so that it supports and fixes the inside of the differential housing 1.

[0028] When the interior of the differential housing 1 needs to be machined, the positioning component 3 arranged in a ring array is placed outside the differential, and the concave arc surface 303 on the inner side of the U-shaped plate 301 is made to fit against the exterior of the differential housing 1. Then, the driving component 5 drives the U-shaped plate 301 to retract inward through the supporting component 2, so that it clamps and fixes the differential housing 1. This achieves the effect of clamping and fixing the differential housing 1 inside and out with one set of tooling, and reduces the number of equipment required while ensuring the same error value.

[0029] The support component 2 includes a slide rail 201 disposed inside the housing 1, a slide plate 202 slidably disposed inside the slide rail 201, a support frame 203 disposed inside the slide plate 202, a mounting platform 205 connected to the U-shaped plate 301 at the top of the support frame 203, and a pin 204 cooperating with the drive component 5 at the bottom of the support frame 203.

[0030] By setting up a slide rail 201 and a slide plate 202, the slide rail 201 is fixedly connected to the outer shell 1. Its purpose is to support and limit the slide plate 202, so that the slide plate 202 can only move horizontally along the slide rail 201, and bear the vertical force of the support frame 203, ensuring the structural stability of the support frame 203 when it is moving and stationary.

[0031] The drive component 5 includes a rotating shaft 504 rotatably disposed inside the housing 1, a disc 501 disposed on the rotating shaft 504, a spiral plate 502 disposed on the disc 501 that cooperates with the pin 204, and a power assembly 503 disposed at the lower end of the rotating shaft 504.

[0032] By setting up the disc 501 and the spiral plate 502, when it is necessary to drive the support component 2 to move, the power component 503 drives the disc 501 to rotate through the rotating shaft 504. The disc 501 then directly drives the spiral plate 502 to rotate. When the spiral plate 502 rotates, it will apply force to the pin 204 in the support component 2. Depending on the rotation direction of the spiral plate 502, the pin 204 will drive the support frame 203 to move towards the center or edge of the disc 501, so as to achieve the purpose of driving the positioning component 3 to move horizontally, thereby driving the clamping or inner differential housing 1.

[0033] The power assembly 503 includes a worm gear 5031 mounted on a rotating shaft 504, a worm 5032 meshing with the side of the worm gear 5031, a torque detector 5034 connected to the end face of the worm 5032, and a motor 5033 connected to the other end of the torque detector 5034 and the housing 1.

[0034] By setting a torque detector 5034, the worm gear 5032 and worm wheel 5031 in the power assembly 503, while transmitting power, have a speed reduction effect and self-locking characteristics. This increases the torque and locks the movement of the structure after the motor 5033 stops working, ensuring the firmness and stability of the clamping or internal support. The torque detector 5034 can detect the torque on the worm gear 5032. When the torque reaches the set value, the motor 5033 stops working. While maintaining the clamping and internal support force, it avoids excessive stress on the structure and ensures that multiple power assemblies 503 maintain the same clamping force, achieving a precise positioning effect.

[0035] It should also be noted that the clamping force is determined by the torque detector 5034, rather than the number of rotations of the spiral plate 502. Therefore, the gap error between the spiral plate 502 and the pin 204 can be ignored.

[0036] The U-shaped plate 301 is detachably connected to the support component 2, and the U-shaped plate 301 has a insertion hole 305 in the center and a square groove 306 on the side of the insertion hole 305. The support component 2 is provided with a locking component 6 that fixes the U-shaped plate 301 through the insertion hole 305 and the square groove 306.

[0037] By setting the insertion hole 305 and the square groove 306, the insertion hole 305 allows the support component 2 to be detachably connected to the U-shaped plate 301 using the locking component 6. This enables the use of the corresponding positioning component 3 when fixing differential housings 1 of different specifications. Furthermore, the square groove 306 can achieve directional calibration and foolproof effect, ensuring accurate installation of the concave arc surface 303 and convex arc surface 302 on both sides of the U-shaped groove.

[0038] The locking component 6 includes a plug rod 601 provided on the support component 2. The side of the plug rod 601 is provided with a square part 602 that mates with the square groove 306. The top of the plug rod 601 is provided with a horizontally rotatable rotating part 603. The side of the rotating part 603 is provided with a locking block 604 corresponding to the square groove 306.

[0039] By setting up a square component 602 and a rotating component 603, the square component 602 can be used to position the U-shaped plate 301 by interlocking with the square groove 306, so that it can be installed accurately. After the U-shaped plate 301 is installed, the rotating component 603 can be rotated so that the locking block 604 on the outside of the rotating component 603 is misaligned with the square groove 306, so that the locking block 604 fits against the U-shaped plate 301, thereby fixing the position of the U-shaped plate 301.

[0040] The U-shaped plate 301 is provided with a handle 307 for easy handling. The handle 307 facilitates the handling of the U-shaped plate 301 when taking it out or putting it in.

[0041] Working principle: When the outside of the differential housing 1 needs to be processed, the positioning component 3 arranged in a ring array is placed inside the differential housing 1, so that the convex arc surface 302 on the outside of the U-shaped plate 301 fits against the inside of the differential housing 1. Then the driving component 5 drives the U-shaped plate 301 to unfold outward through the supporting component 2, so that it supports and fixes the inside of the differential housing 1.

[0042] When it is necessary to process the inside of the differential housing 1, the positioning component 3 arranged in a ring array is placed outside the differential, and the concave arc surface 303 on the inner side of the U-shaped plate 301 is in contact with the outside of the differential housing 1. Then, the drive component 5 drives the U-shaped plate 301 to retract inward through the support component 2, so that it clamps, positions and fixes the differential housing 1.

[0043] The above are merely specific embodiments of this utility model, but the technical features of this utility model are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on this utility model to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of this utility model.

Claims

1. An automobile differential machining positioning mechanism comprising a housing (1), characterized in that: The shell (1) is centrally provided with a vertically penetrating working hole (4), and a plurality of support components (2) are arranged in an annular array in the shell (1); the support components (2) are provided with positioning components (3) for positioning the differential shell (1); and drive components (5) are arranged below the support components (2) to drive the positioning components (3) to move horizontally. The positioning components (3) comprise U-shaped plates (301) arranged on the support components (2); one side of each U-shaped plate (301) is provided with a convex arc surface (302) abutting against the inner wall of the differential shell (1); the other side of each U-shaped plate (301) is provided with a concave arc surface (303) abutting against the outer wall of the differential shell (1); and a bracket (304) for bearing the differential shell (1) is arranged on each convex arc surface (302) and concave arc surface (303).

2. The mechanism for positioning according to claim 1, characterized in that: The support components (2) comprise slide rails (201) arranged in the shell (1); slide plates (202) are slidably arranged in the slide rails (201); support frames (203) are arranged in the slide plates (202); the top end of each support frame (203) is provided with a mounting table (205) connected with a U-shaped plate (301); and the bottom end of each support frame (203) is provided with a pin shaft (204) matched with a drive component (5).

3. The mechanism for positioning according to claim 1, characterized in that: The drive components (5) comprise a rotating shaft (504) rotatably arranged in the shell (1); a disc (501) is arranged on the rotating shaft (504); a spiral plate (502) matched with the pin shaft (204) is arranged on the disc (501); and a power assembly (503) is arranged at the lower end of the rotating shaft (504).

4. The mechanism for positioning according to claim 3, characterized in that: The power assembly (503) comprises a worm gear (5031) arranged on the rotating shaft (504); a worm shaft (5032) is engaged with the side surface of the worm gear (5031); a torque detector (5034) is connected to the end surface of the worm shaft (5032); and a motor (5033) connected with the shell (1) is arranged at the other end of the torque detector (5034).

5. The mechanism for positioning according to claim 1, characterized in that: The U-shaped plates (301) are detachably connected with the support components (2); a plug-in hole (305) is arranged at the center of each U-shaped plate (301); a square groove (306) is arranged at the side surface of the plug-in hole (305); and a locking component (6) for fixing the U-shaped plates (301) through the plug-in hole (305) and the square groove (306) is arranged on the support components (2).

6. The mechanism for positioning according to claim 5, characterized in that: The locking component (6) comprises a plug-in rod (601) arranged on the support component (2); a square piece (602) matched with the square groove (306) is arranged at the side surface of the plug-in rod (601); a rotatable piece (603) horizontally rotatable is arranged at the top end of the plug-in rod (601); and a clamping block (604) corresponding to the square groove (306) is arranged at the side surface of the rotatable piece (603).

7. The mechanism according to claim 1, wherein: A handle (307) is arranged in each U-shaped plate (301) to facilitate the taking and placing of the U-shaped plate (301).

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