Differential shell oil hole machining and positioning mechanism

Abstract

The utility model discloses a differential shell oil hole machining positioning mechanism which comprises a base, a positioning column, a positioning plate and a limiting rod. The upper end part of the base protrudes upwards to form a circular truncated cone part, a positioning column which can vertically penetrate through the interior of the differential shell and is matched with the circular truncated cone part is vertically, detachably and fixedly arranged on the circular truncated cone part, and a positioning plate which can abut against the differential shell is horizontally, detachably and fixedly arranged at the upper end of the positioning column; a plurality of limiting rods capable of penetrating through a plurality of through holes in the bottom of the differential shell are vertically arranged in the base in the circumferential direction of the differential shell at equal intervals in a liftable mode so as to position the differential shell in the horizontal direction. According to the differential shell oil hole machining positioning mechanism, the differential shell can be positioned in multiple directions, the stability and reliability of the positioning mechanism are improved, and the situation that the machining effect is affected due to the fact that the differential shell rotates in the machining process is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to differential mechanism shell oil hole processing field, specifically, relate to a differential mechanism shell oil hole processing positioning mechanism. BACKGROUND

[0002] Automobile differential is the important component in automobile transmission, and the automobile differential can make left and right (or front and rear) drive wheels rotate at different speeds; it is mainly composed of left and right half axle gears, two planetary gears and differential mechanism shell used as gear carrier, and its function is to make left and right wheels roll at different speeds when the automobile turns or drives on uneven road, that is, to ensure that both sides of the drive wheels make pure rolling motion. The differential mechanism shell is the shell of the automobile differential, as shown in the figure, the shell of the differential mechanism shell is provided with an oil hole, and the oil hole needs to be drilled during the machining of the differential mechanism shell. The positioning mechanism is used for fixing and positioning the differential mechanism shell. Figure 5

[0003] Through retrieval, the patent application number of China is "CN202222000765.8", which discloses a differential mechanism shell oil hole processing positioning mechanism, comprising a machining seat, a sliding slot is formed in the top of the machining seat, an installation plate is slidably installed in the sliding slot, a rotating groove is formed in the top of the machining seat, a rotating seat is rotatably installed in the rotating groove, a positioning mechanism is arranged on the top of the rotating seat, an annular groove is formed in the inner wall of the rotating groove, and two symmetrical guide blocks are slidably installed in the annular groove. The outer side of the two guide blocks is fixedly connected with the outer side of the rotating seat by welding. The utility model can automatically adjust the position of the differential mechanism shell during use, thereby effectively improving the differential mechanism shell oil hole processing efficiency, and is simple in structure and convenient to use.

[0004] The inventor found the following problems in the prior art during the implementation of the utility model.

[0005] During use, the differential mechanism shell is only abutted on the machining seat by the cooperation of the positioning shaft and the fastening bolt, and the circumferential direction of the differential mechanism shell is not positioned. When machining, the differential mechanism shell will rotate in its circumferential direction, reducing the stability and reliability of the positioning mechanism and affecting the cutting effect.

[0006] Therefore, to provide a differential mechanism shell oil hole processing positioning mechanism which can position the differential mechanism shell in multiple directions during use, improve the stability and reliability of the positioning mechanism, avoid the rotation of the differential mechanism shell during machining and affect the machining effect, and is simple to operate and low in maintenance cost is an urgent problem to be solved by the utility model. UTILITY MODEL CONTENTS

[0007] ​In order to overcome the problems in the prior art that the differential housing is only abutted on the machining seat by the cooperation of the positioning shaft and the fastening bolt, the circumferential direction of the differential housing is not positioned, the differential housing rotates along the circumferential direction during machining, the stability and reliability of the positioning mechanism are reduced, and the cutting effect is affected, the differential housing oil hole machining positioning mechanism can position the differential housing in multiple directions during use, the stability and reliability of the positioning mechanism are improved, the machining effect is not affected by the rotation of the differential housing during machining, the operation is simple, and the maintenance cost is low.

[0008] In order to achieve the above object, the utility model provides a differential housing oil hole machining positioning mechanism, the mechanism includes: base, positioning column, positioning plate and limit rod,

[0009] The upper end of the base is protruded upwards to form a circular table part, and a positioning column which can be vertically penetrated in the differential housing and matched with the differential housing is fixed on the circular table part in a vertical and detachable mode, the upper end of the positioning column is horizontally and detachably fixed with a positioning plate which can abut on the differential housing, so as to position the differential housing in the longitudinal direction, and a plurality of limit rods which can penetrate through a plurality of through holes on the bottom of the differential housing are vertically and liftably arranged in the base along the circumferential direction of the differential housing, so as to position the differential housing in the horizontal direction.

[0010] Preferably, an assembly cavity is formed in the base, and a fixed plate is vertically and liftably arranged in the assembly cavity, a plurality of limit rods are vertically and fixedly arranged on the fixed plate along the circumferential direction of the fixed plate, a plurality of springs are vertically and fixedly arranged on the bottom end of the fixed plate, the bottom end of each spring is fixed on the assembly cavity, and an operating rod which can vertically penetrate out of the assembly cavity and extend above the base is vertically and fixedly arranged on the fixed plate.

[0011] Preferably, an avoiding hole which is communicated with the assembly cavity and through which the operating rod penetrates is vertically formed in the base.

[0012] Preferably, the operating rod is a screw rod, a threaded hole which is communicated with the assembly cavity and threadedly connected with the operating rod is vertically and penetratively formed in the base, and the bottom end of the operating rod is rotatably arranged on the fixed plate.

[0013] Preferably, a lower stud is coaxially and fixedly arranged on the bottom of the positioning column, a threaded blind hole which is threadedly connected with the lower stud is formed in the base by partially recessing inward, and the lower stud is vertically and threadedly fixed in the threaded blind hole of the base.

[0014] Preferably, a middle part of the positioning plate is provided with a limiting through hole through which the upper stud passes, and the positioning plate is horizontally arranged on the upper stud through the limiting through hole and abuts against the differential housing, and a top of the upper stud is fixedly provided with a nut capable of abutting against the positioning plate to lock the positioning plate.

[0015] Preferably, a plurality of mounting holes are vertically and equidistantly arranged along a circumferential direction of the circular table part on the base.

[0016] According to the technical scheme, the differential housing oil hole machining positioning mechanism has the following advantages:

[0017] (1) The differential housing to be machined is vertically placed on the base, the plurality of through holes on the bottom of the differential housing correspond to the tops of the plurality of limiting rods on the base, and the positioning column is vertically inserted into the inside of the differential housing, and the diameter of the positioning column is the same as the inner diameter of the shaft hole on the differential housing, so that the positioning column can pass through the shaft hole on the differential housing, and the outer wall of the positioning column can be attached to the inner wall of the shaft hole on the differential housing to limit the differential housing, so that the differential housing is positioned in the longitudinal direction by the positioning column.

[0018] (2) The plurality of limiting rods on the base are respectively inserted into the corresponding through holes on the bottom of the differential housing from the inside of the base, so that the differential housing is positioned in the horizontal direction, and the differential housing is prevented from rotating in the circumferential direction during machining of the differential housing, so that the stability and reliability of the positioning mechanism are improved.

[0019] In summary, the positioning mechanism can position the differential housing in multiple directions, improve the stability and reliability of the positioning mechanism, avoid rotation of the differential housing during machining, and improve the machining effect, and is simple to operate and low in maintenance cost.

[0020] Other features and advantages of the present application will be illustrated in the following detailed description; and the parts not involved in the present application are the same as or can be realized by the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present application, and constitute a part of the specification, and are used to explain the present application together with the following detailed description, but do not constitute a limitation of the present application. In the drawings:

[0022] Figure 1 This is a schematic diagram of the differential housing oil hole machining and positioning mechanism provided in Embodiment 1;

[0023] Figure 2 This is a structural cross-sectional view of the differential housing oil hole machining and positioning mechanism provided in Embodiment 1;

[0024] Figure 3 This is a cross-sectional view of the differential housing oil hole machining and positioning mechanism provided in Embodiment 1 when positioning the differential housing;

[0025] Figure 4 This is a schematic diagram of the differential housing oil hole machining and positioning mechanism provided in Embodiment 2;

[0026] Figure 5 This is a structural diagram of a differential housing in the prior art.

[0027] Explanation of reference numerals in the attached figures

[0028] 1. Base; 2. Positioning pin; 3. Lower stud; 4. Upper stud; 5. Positioning plate; 6. Nut; 7. Fixing plate; 8. Limiting rod; 9. Spring; 10. Operating rod. Detailed Implementation

[0029] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0030] Example 1

[0031] like Figures 1-3 As shown, the present invention provides a differential housing oil hole machining and positioning mechanism, the mechanism comprising: a base 1, a positioning column 2, a positioning plate 5, and a limiting rod 8;

[0032] The upper part of the base 1 protrudes upward to form a frustum, and a positioning post 2 is vertically and detachably fixed on the frustum, which can vertically penetrate the inside of the differential housing and is adapted to it. The upper end of the positioning post 2 is horizontally and detachably fixed with a positioning plate 5 that can abut against the differential housing to position the differential housing in the longitudinal direction. The interior of the base 1 is provided with several limiting rods 8 that are equally spaced along the circumference of the differential housing and vertically liftable, which can penetrate multiple through holes on the bottom of the differential housing to position the differential housing in the horizontal direction.

[0033] In the above scheme, such as Figure 3As shown, the differential housing to be processed is placed vertically on the base 1, with multiple through holes on the bottom of the differential housing corresponding to the tops of several limiting rods 8 on the base 1. The positioning pin 3 is vertically inserted into the interior of the differential housing, and the diameter of the positioning pin 3 is the same as the inner diameter of the shaft hole on the differential housing, so that the positioning pin 3 can pass through the shaft hole on the differential housing, and the outer wall of the positioning pin 3 can fit against the inner wall of the shaft hole on the differential housing to limit the differential housing and position it. Then, the positioning plate 5 is assembled on the positioning pin 3 so that the positioning plate 5 abuts against the differential housing, clamping the differential housing between the base 1 and the positioning plate 5, thereby positioning it in the longitudinal direction. In addition, several limiting rods 8 on the base 1 are inserted from the inside of the base 1 into the corresponding through holes on the bottom of the differential housing to position the differential housing in the horizontal direction, preventing the differential housing from rotating along its circumference during the machining process, which would reduce the stability and reliability of the positioning mechanism.

[0034] In summary, the positioning mechanism provided by this utility model can perform multi-directional positioning of the differential housing, which improves the stability and reliability of the positioning mechanism, avoids the differential housing from rotating during the processing and affecting the processing effect, and is easy to operate and has low maintenance costs.

[0035] In a preferred embodiment of this utility model, the base 1 has an assembly cavity inside, and a fixing plate 7 is horizontally and vertically arranged inside the assembly cavity. A plurality of limiting rods 8 are vertically fixedly arranged at equal intervals along the circumference of the fixing plate 7. A plurality of springs 9 are uniformly and vertically fixedly arranged at the bottom end of the fixing plate 7, and the bottom end of each spring 9 is fixedly arranged on the assembly cavity. An operating rod 10 that can vertically pass through the assembly cavity and extend to the top of the base 1 is also vertically fixedly arranged on the fixing plate 7.

[0036] In the above scheme, when in use, pressing down on the operating lever 10 causes the fixing plate 7 to descend vertically within the assembly cavity, so that several limiting rods 8 fixed on the fixing plate 7 descend together and leave from multiple through holes at the bottom of the differential housing, thereby releasing the positioning of the differential housing in the horizontal direction, so that the subsequently processed differential housing can be removed from the base 1.

[0037] Additionally, when positioning the differential housing is required, pressing down on the operating lever 10 causes the fixing plate 7 to lower and lower multiple limiting rods 8 fixed thereon into the assembly cavity. Simultaneously, multiple springs 9 are compressed, aligning several limiting rods 8 with multiple through holes on the bottom of the differential housing, which is vertically placed on the base 1. Then, the operating lever 10 is released, and under the action of the compressed springs 9, the fixing plate 7 vertically raises several limiting rods 8 fixed thereon so that the limiting rods pass through their respective through holes on the bottom of the differential housing, thereby positioning the differential housing in the horizontal direction.

[0038] In the above scheme, the diameter of each limiting rod 8 is adapted to the inner diameter of the through hole at the bottom of the differential housing, so that the differential housing is positioned by the cooperation between the limiting rod 8 and the through hole at the bottom of the differential housing.

[0039] In addition, there is at least one limiting rod 8 on the base 1, or there may be multiple rods, and the number of limiting rods 8 is less than the number of through holes on the bottom of the differential housing.

[0040] In a preferred embodiment of this utility model, the base 1 is provided with a vertical clearance hole that communicates with the assembly cavity and allows the operating rod 10 to pass through.

[0041] In a preferred embodiment of this utility model, a lower stud 3 is coaxially fixed at the bottom of the positioning post 2, and the upper part of the base 1 is recessed inward to form a threaded blind hole that is threadedly connected to the lower stud 3. The lower stud 3 is vertical and threadedly fixed in the threaded blind hole of the base 1.

[0042] In the above scheme, the positioning post 2 is vertically fixed on the base 1 by the cooperation of the lower stud 3 and the threaded blind hole on the base 1, which facilitates disassembly and replacement.

[0043] In a preferred embodiment of this utility model, the positioning plate 5 has a limiting through hole in the middle for the upper stud 4 to pass through, and the positioning plate 5 is horizontally inserted through the limiting through hole onto the upper stud 4 and abuts against the differential housing. The top of the upper stud 4 is threadedly fixed with a nut 6 that can abut against the positioning plate 5 to lock it.

[0044] In the above scheme, during use, the positioning plate 5 is horizontally inserted onto the upper stud 4, and the positioning plate 5 is abutted against the differential housing. The nut 6 is screwed onto the upper stud 4 until the nut 6 abuts against the positioning plate 5 to lock the positioning plate 5, thereby positioning the differential housing in the longitudinal direction through the positioning plate 5.

[0045] In addition, the nut 6 and the upper stud 4 are used together to lock the positioning plate 5, which is convenient for operation and also facilitates later replacement and maintenance.

[0046] In a preferred embodiment of this utility model, the base 1 has a plurality of mounting holes that are vertically and equally spaced along the circumference of the frustum portion.

[0047] In the above solution, the base 1 can be fixed on the processing base disclosed in the Chinese patent (application number: CN202222000765.8) cited in the background art by means of mounting holes and fasteners, and the fasteners can be bolts and screws, etc.

[0048] Example 2

[0049] The difference between Example 2 and Example 1 is that:

[0050] like Figure 4 As shown, in a preferred embodiment of this utility model, the operating rod 10 is a screw, and the base 1 has a threaded hole that is vertically through and communicates with the assembly cavity and is threadedly connected to the operating rod 10. The bottom end of the operating rod 10 is rotatably mounted on the fixing plate 7.

[0051] In the above scheme, since the operating lever 10 is rotatably mounted on the fixed plate 7, the fixed plate 7 can be raised and lowered in the vertical direction when the operating lever 10 is rotated.

[0052] As the operating lever 10 rotates, the fixed plate 7 rises, thereby causing several limiting rods 10 on the fixed plate 7 to extend from the inside of the base 1 and enter their respective through holes on the bottom of the differential housing to position the differential housing in the horizontal direction, preventing the differential housing from rotating along its circumference during processing and affecting the processing effect.

[0053] Everything else is the same as in Example 1.

[0054] In summary, the differential housing oil hole machining positioning mechanism provided by this utility model overcomes the problem in the prior art where the differential housing is only supported on the machining seat by the cooperation of the positioning shaft and fastening bolts, and the circumferential direction of the differential housing is not positioned. During machining, the differential housing will rotate along its circumferential direction, which reduces the stability and reliability of the positioning mechanism and thus affects the cutting effect.

[0055] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0056] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.

[0057] Furthermore, various different embodiments of this utility model can be combined in any way, as long as they do not violate the spirit of this utility model, they should also be regarded as the content disclosed by this utility model.

Claims

1. A differential case oil hole machining positioning mechanism characterized by, The mechanism comprises a base (1), a positioning column (2), a positioning plate (5) and a limiting rod (8); The upper end of the base (1) is protruded upward to form a circular table part, and a positioning column (2) capable of vertically penetrating into the differential housing and being matched with the differential housing is fixedly arranged on the circular table part in a vertical and detachable manner; the upper end of the positioning column (2) is horizontally and detachably fixedly arranged with a positioning plate (5) capable of abutting on the differential housing to position the differential housing in the longitudinal direction; and a plurality of limiting rods (8) capable of penetrating through a plurality of through holes on the bottom of the differential housing are vertically and liftably arranged in the base (1) at equal intervals along the circumferential direction of the differential housing to position the differential housing in the horizontal direction.

2. The differential case oil hole machining positioning mechanism of claim 1, wherein, A mounting cavity is formed in the base (1), and a fixed plate (7) is vertically and liftably arranged in the mounting cavity; a plurality of limiting rods (8) are vertically and fixedly arranged on the fixed plate (7) at equal intervals along the circumferential direction of the fixed plate (7); the bottom end of the fixed plate (7) is uniformly and vertically fixedly arranged with a plurality of springs (9), and the bottom end of each spring (9) is fixedly arranged on the mounting cavity; and an operating rod (10) vertically extending out of the mounting cavity and extending above the base (1) is vertically and fixedly arranged on the fixed plate (7).

3. The differential case oil hole machining positioning mechanism of claim 2, wherein, An avoiding hole is vertically formed in the base (1) and communicates with the mounting cavity and is used for the operating rod (10) to pass through.

4. The differential case oil hole machining positioning mechanism of claim 2, wherein, The operating rod (10) is a screw rod, a threaded hole is vertically and penetratively formed in the base (1) and communicates with the mounting cavity and is threadedly connected with the operating rod (10), and the bottom end of the operating rod (10) is rotatably arranged on the fixed plate (7).

5. The differential case oil hole machining positioning mechanism of claim 1, wherein, A lower stud (3) is coaxially and fixedly arranged at the bottom of the positioning column (2), a threaded blind hole is formed in the base (1) and is threadedly connected with the lower stud (3), and the lower stud (3) is vertically and threadedly fixed in the threaded blind hole of the base (1).

6. The differential case oil hole machining positioning mechanism of claim 1, wherein, A limiting through hole is formed in the middle of the positioning plate (5) and is used for the upper stud (4) to pass through, the positioning plate (5) is horizontally arranged on the upper stud (4) through the limiting through hole and abuts on the differential housing, and a nut (6) is threadedly fixed at the top of the upper stud (4) and abuts on the positioning plate (5) to lock the positioning plate (5).

7. The differential case oil hole machining positioning mechanism of claim 1, wherein, A plurality of mounting holes are vertically and penetratively formed in the base (1) along the circumferential direction of the circular table part at equal intervals.

Images