Clamp for numerical control machining of differential mechanism shell

Abstract

The utility model provides a numerical control machining differential shell clamp, which relates to the technical field of clamps and comprises a servo motor, a speed reducer is fixedly mounted at the output end of the servo motor, a four-axis rotating plate is mounted at the output end of the speed reducer, a bottom plate is mounted on the lower surface of the four-axis rotating plate, and a cushion block is mounted on the lower surface of the bottom plate. A plurality of holes are formed in the bottom end of the differential mechanism shell, a plurality of cushion blocks are arranged at the bottom end of the differential mechanism shell, a plurality of positioning holes are formed in the lower surfaces of the cushion blocks, and positioning pins are arranged in the positioning holes, the holes formed in the bottom end of the differential mechanism shell are aligned with the positioning holes, and the positioning pins penetrate through the holes formed in the bottom end of the differential mechanism shell to be arranged in the positioning holes. According to the technical scheme, an original four-axis bridge plate support is omitted, a fixed support is adopted, the rotating center is consistent with the product center, and the rotating face is perpendicular to the plane of a machine tool. Space errors caused by rotation of the four-axis bridge plate are effectively improved, and the improved symmetric holes can meet the technical requirements of symmetry and perpendicularity.

Description

Technical Field

[0001] The utility model relates to the technical field of clamps, in particular to a clamp for numerically controlling a differential housing. Background Art

[0002] The differential housing is the main part of the differential. It is a cylindrical metal shell with various components of the differential installed inside. When processing the differential housing, it is first necessary to fix the differential housing before drilling. In the existing technology, when processing symmetrical holes, four-axis flip processing is used. Due to the precision error of four-axis flipping, the processed thickness product is difficult to meet the requirements of customer drawings and the technical requirements of symmetry and verticality. Utility Model Content

[0003] The main purpose of the utility model is to provide a CNC machining differential housing fixture, which can effectively solve the problem in the background technology that when machining symmetrical holes, four-axis flipping is used for machining. Due to the precision error of the four-axis flipping, the thickness of the machined product is difficult to meet the requirements of the customer's drawings, and it is difficult to meet the technical requirements of symmetry and verticality.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a CNC machining differential housing fixture, including a servo motor, a reducer is fixedly installed on the output end of the servo motor, a four-axis rotating plate is installed on the output end of the reducer, a base plate is installed on the lower surface of the four-axis rotating plate, a cushion block is installed on the lower surface of the base plate, a plurality of positioning holes are opened on the lower surface of the cushion block, and positioning pins are arranged inside the positioning holes.

[0005] Preferably, a mounting plate is installed at the rear end of the servo motor.

[0006] Preferably, a scale is installed on the front surface of the four-axis rotating plate.

[0007] Preferably, a plurality of limiting holes are equidistantly formed on the lower surface of the cushion block.

[0008] Preferably, a four-axis connecting plate is fixedly mounted on the side of the base plate.

[0009] Preferably, a positioning column is installed at the lower end of the cushion block via a floating positioning block.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] (1) Take out the positioning pin from the positioning hole, fit one end of the differential housing to be processed on the lower surface of the pad, align the holes set at the bottom of the differential housing with the positioning holes, and pass the positioning pins through the holes set at the bottom of the differential housing into the positioning holes. At this time, the differential housing can be fixed on the lower surface of the pad. At this time, the servo motor output end is driven to drive the four-axis rotating plate to rotate through the reducer, and at the same time, the differential housing can be driven to rotate, and the differential housing is processed in the next step. The present invention cancels the original four-axis bridge plate support and uses a fixed support instead. The rotation center is guaranteed to be consistent with the product center. The rotating surface is perpendicular to the machine tool plane. The spatial error caused by the rotation of the four-axis bridge plate is effectively improved. The improved symmetrical holes can meet the technical requirements of symmetry and verticality. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of a CNC machining differential housing fixture of the utility model;

[0013] Figure 2 It is a schematic diagram of the top view of a CNC machining differential housing fixture of the utility model;

[0014] Figure 3 It is a cross-sectional structural schematic diagram of a CNC machining differential housing fixture of the utility model;

[0015] Figure 4 The utility model is a schematic diagram of a cushion block structure of a CNC machining differential housing fixture.

[0016] In the figure: 1. Base plate; 2. Spacer block; 3. Locating pin; 4. Locating column; 5. Floating positioning block; 6. Four-axis connecting plate; 7. Four-axis rotating plate; 8. Scale; 9. Reducer; 10. Servo motor; 11. Mounting plate; 12. Locating hole; 13. Limit hole. DETAILED DESCRIPTION

[0017] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] like Figure 1 , 2As shown in , 3, a CNC machining differential housing fixture includes a servo motor 10, a reducer 9 is fixedly installed at the output end of the servo motor 10, a four-axis rotating plate 7 is installed at the output end of the reducer 9, a base plate 1 is installed on the lower surface of the four-axis rotating plate 7, a cushion block 2 is installed on the lower surface of the base plate 1, a plurality of positioning holes 12 are opened on the lower surface of the cushion block 2, and positioning pins 3 are arranged inside the positioning holes 12.

[0019] like Figure 1 , 2 As shown, a mounting plate 11 is installed at the rear end of the servo motor 10. By installing the mounting plate 11 at the rear end of the servo motor 10, it is convenient to install the device at a suitable position.

[0020] like Figure 1 As shown, a scale 8 is installed on the front surface of the four-axis rotating plate 7. By installing the scale 8 on the front surface of the four-axis rotating plate 7, the accuracy of the device can be improved.

[0021] like Figure 1 , 3 As shown, a plurality of limiting holes 13 are equidistantly provided on the lower surface of the cushion block 2. By equidistantly providing a plurality of limiting holes 13 on the lower surface of the cushion block 2, the position of the speed reducer housing can be more accurately installed on the lower surface of the cushion block 2.

[0022] like Figure 1 , 2 As shown in , 3 and 4, a four-axis connecting plate 6 is fixedly installed on the side of the bottom plate 1, and a positioning column 4 is installed on the lower end of the cushion block 2 through a floating positioning block 5. The positioning pin 3 is taken out from the inside of the positioning hole 12, and one end of the differential housing to be processed is attached to the lower surface of the cushion block 2, and a plurality of holes set at the bottom end of the differential housing are aligned with the positioning hole 12. In addition, because a reducer 9 is fixedly installed on the output end of the servo motor 10, a four-axis rotating plate 7 is installed on the output end of the reducer 9, and a bottom plate 1 is installed on the lower surface of the four-axis rotating plate 7, and a cushion block 2 is installed on the lower surface of the bottom plate 1, and a lower surface of the cushion block 2 A number of positioning holes 12 are provided, and positioning pins 3 are provided inside the positioning holes 12. At this time, the positioning pins 3 are passed through the holes provided at the bottom of the differential housing and provided inside the positioning holes 12. At this time, the differential housing can be fixed on the lower surface of the pad 2. At this time, the output end of the servo motor 10 is driven, and the four-axis rotating plate 7 can be driven to rotate through the reducer, and at the same time, the differential housing can be driven to rotate, and the differential housing is processed in the next step. The present invention cancels the original four-axis bridge plate support and uses fixed support instead. The rotation center is guaranteed to be consistent with the product center. The rotating surface is perpendicular to the plane of the machine tool. The spatial error caused by the rotation of the four-axis bridge plate is effectively improved. The improved symmetrical holes can meet the technical requirements of symmetry and verticality.

[0023] The working principle of this CNC machining differential housing fixture:

[0024] When in use, first take out the locating pin 3 from the inside of the locating hole 12, fit one end of the differential housing to be processed on the lower surface of the cushion block 2, align the several holes set at the bottom end of the differential housing with the locating holes 12, and because the output end of the servo motor 10 is fixedly installed with a reducer 9, the output end of the reducer 9 is installed with a four-axis rotating plate 7, the lower surface of the four-axis rotating plate 7 is installed with a base plate 1, and the lower surface of the base plate 1 is installed with a cushion block 2. A number of locating holes 12 are opened on the lower surface of the cushion block 2, and a locating pin 3 is arranged inside the locating hole 12. At this time, the locating pin 3 is passed through the several holes set at the bottom end of the differential housing and arranged inside the locating hole 12. At this time, the differential housing can be fixed to the lower surface of the cushion block 2. At this time, it is driven by the output end of the servo motor 10, and the four-axis rotating plate 7 can be driven to rotate by the reducer, and at the same time, the differential housing can be driven to rotate, and the differential housing is processed in the next step. The present invention cancels the original four-axis bridge plate support and uses a fixed support instead. The rotation center is guaranteed to be consistent with the product center. The rotating surface is perpendicular to the plane of the machine tool. The spatial error caused by the rotation of the four-axis bridge plate is effectively improved. The improved symmetrical holes can meet the technical requirements of symmetry and verticality.

[0025] The above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the scope of protection of the present invention.

Claims

1. A CNC machining differential housing fixture, comprising a servo motor (10), characterized in that: A reducer (9) is fixedly mounted on the output end of the servo motor (10), a four-axis rotating plate (7) is mounted on the output end of the reducer (9), a bottom plate (1) is mounted on the lower surface of the four-axis rotating plate (7), a cushion block (2) is mounted on the lower surface of the bottom plate (1), a plurality of positioning holes (12) are formed on the lower surface of the cushion block (2), and positioning pins (3) are arranged inside the positioning holes (12).

2. The CNC machining differential case fixture according to claim 1, characterized in that: A mounting plate (11) is mounted on the rear end of the servo motor (10).

3. The CNC machining differential case fixture according to claim 2, characterized in that: A scale (8) is installed on the front surface of the four-axis rotating plate (7).

4. The CNC machining differential case fixture according to claim 3, characterized in that: The lower surface of the cushion block (2) is provided with a plurality of limiting holes (13) at equal intervals.

5. The CNC machining differential case fixture according to claim 4, characterized in that: A four-axis connecting plate (6) is fixedly mounted on the side of the base plate (1).

6. The CNC machining differential case fixture according to claim 5, characterized in that: A positioning column (4) is installed at the lower end of the cushion block (2) via a floating positioning clamp block (5).

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