Automobile front hub machining tool

Abstract

The utility model belongs to the technical field of automobile part machining equipment, and particularly relates to an automobile front hub machining tool. Comprising a mounting disc, limiting blocks, arc-shaped supporting blocks and an adjusting disc; the mounting disc is used for being fixed to machining equipment, and a screw hole or a clamping structure matched with the machining equipment is arranged at the rear end of the mounting disc. Three supporting arms which are arranged in an annular array are arranged on the front end surface of the mounting disc; the three limiting blocks are respectively inserted into the three supporting arms; a strip-shaped connecting part is arranged at the rear end of the limiting block, and a limiting groove is formed in the front end of the limiting block; the arc-shaped supporting blocks are installed in the limiting grooves. An adjusting disc mounting groove is formed in the center of the front end face of the mounting disc, and the adjusting disc is mounted in the adjusting disc mounting groove; according to the automobile front hub machining tool, the clamping efficiency of automobile front hub end face machining can be effectively improved, rapid clamping is achieved, and the stability of high-precision machining is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the technical field of automotive parts processing equipment, and in particular relates to a tooling for processing automotive front wheel hubs. Background Technology

[0002] The front wheel hub is one of the fundamental components of a car's powertrain. Although its structure is relatively simple and its size is small, it requires extremely high precision in its machining. Some of its machining precision requirements are as follows: Figure 1 As shown, due to its high requirements for the surface roughness and parallelism of the annular surfaces at both ends and the large end face, it is not suitable to be used as the clamping surface of traditional fixtures during processing to avoid secondary damage to the surface. The best method is to use the outer circular surface of its flange and the tail end plane for positioning and clamping. However, due to the structural limitations of existing traditional clamping fixtures, the clamping efficiency is low, the stability is poor, and it is difficult to guarantee its processing accuracy and product processing efficiency. Utility Model Content

[0003] The purpose of this utility model is to provide a tooling fixture structure suitable for machining automobile front wheel hubs, so as to improve the clamping efficiency of automobile front wheel hubs and at the same time ensure the smooth machining of various high-requirement surfaces of automobile front wheel hubs.

[0004] To achieve the above objectives, the present invention adopts the following technical solution.

[0005] A tooling for machining a front wheel hub of an automobile includes a mounting plate 1, a limiting block 2, an arc-shaped support block 3, and an adjusting plate 4;

[0006] Mounting plate 1 is used to fix it on the processing equipment. Its rear end is provided with screw holes or a clamping structure that matches the processing equipment. The front end face of mounting plate 1 is provided with three support arms 10 arranged in a ring array. The front end faces of the three support arms 10 are flush and each end face is provided with a strip mounting groove 1a. The vertical line of the projection of the strip mounting groove 1a on the front end face of the support arm 10 is perpendicular to the central axis of mounting plate 1.

[0007] The bottom of the strip mounting groove 1a is provided with a first connecting screw hole 1b;

[0008] Three limiting blocks 2 are respectively inserted into the strip mounting grooves 1a on the three support arms 10; the rear end of the limiting block 2 is provided with a strip connecting part 20 that matches the strip mounting groove 1a, and the front end of the limiting block 2 is provided with a limiting groove 2a. The limiting groove 2a is carved out from the inner side of the front end face of the limiting block, and the outer wall of the limiting groove 2a is arc-shaped. The outer arc-shaped walls of the limiting grooves 2a on the three limiting blocks 2 form an annular positioning surface; the bottom of the limiting groove 2a is provided with a through hole 2b that is directly opposite to the first connecting screw hole 1b.

[0009] Three arc-shaped support blocks 3 are installed in the limiting grooves 2a on the three limiting blocks 2. Their outer sides are in contact with the outer arc-shaped wall surfaces of the limiting grooves 2a, and their inner sides are arc surfaces matching the outer circular surface of the front wheel hub 9 of the vehicle; the arc-shaped support blocks 3 are provided with stepped holes 3a corresponding to the first connection screw holes 1b and through holes 2b;

[0010] The inner sides of the three arc-shaped support blocks 3 form an annular limiting surface for positioning the outer circular surface of the front wheel hub 9 of the vehicle;

[0011] At the center of the front end face of the mounting disc 1, there is an adjusting disc mounting groove 1c. The adjusting disc 4 is installed in the adjusting disc mounting groove 1c. The front end face of the adjusting disc mounting groove 1c is provided with several raised positioning platforms 40. The front end faces of the positioning platforms 40 are smooth planes and have the same height. Each positioning platform 40 forms a uniform supporting surface for supporting the rear end of the front wheel hub 9 of the vehicle.

[0012] For a further improvement or preferred implementation of the foregoing processing tool for the front wheel hub of a vehicle, the clamping structure matching the processing equipment refers to the structure matching the chuck and the slot structure.

[0013] For a further improvement or preferred implementation of the foregoing processing tool for the front wheel hub of a vehicle, the limiting block 2 is made by integrally processing a ring-shaped workpiece and then cutting it.

[0014] For a further improvement or preferred implementation of the foregoing processing tool for the front wheel hub of a vehicle, the arc-shaped support block 3 is made by integrally processing a ring-shaped workpiece and then cutting it.

[0015] For a further improvement or preferred implementation of the foregoing processing tool for the front wheel hub of a vehicle,

[0016] The bottom heights of the strip-shaped mounting grooves 1a on the three support arms 10 are the same and the perpendicular lines at the bottoms are parallel to the central axis of the mounting disc 1.

[0017] For a further improvement or preferred implementation of the foregoing processing tool for the front wheel hub of a vehicle, it includes multiple adjusting discs 4, and each adjusting disc 4 has positioning platforms 40 with different heights.

[0018] For a further improvement or preferred implementation of the foregoing processing tool for the front wheel hub of a vehicle, it includes multiple groups of arc-shaped support blocks 3, and each group of arc-shaped support blocks 3 has different inner side radii.

[0019] For a further improvement or preferred implementation of the foregoing processing tool for the front wheel hub of a vehicle, the mounting disc 1, the limiting block 2, and the arc-shaped support block 3 are connected and fixed by a bolt group that sequentially passes through the stepped hole 3a, the through hole 2b, and then inserts into the first connection screw hole 1b.

[0020] Its beneficial effects are as follows:

[0021] The automotive front wheel hub machining fixture of this invention can effectively improve the clamping efficiency of automotive front wheel hub end face machining, achieving rapid clamping and ensuring the stability of high-precision machining. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the parameters for the front wheel hub of a car.

[0023] Figure 2 This is a front view of the tooling used for machining the front wheel hub of an automobile.

[0024] Figure 3 This is a BB sectional view of the machining fixture for the front wheel hub of an automobile.

[0025] Figure 4 This is a side view of the tooling used for machining the front wheel hub of an automobile.

[0026] Figure 5 It is an assembly drawing of the tooling for machining the front wheel hub of an automobile;

[0027] The reference numerals in the attached figures include:

[0028] Mounting plate 1, strip mounting groove 1a, first connecting screw hole 1b, adjusting plate mounting groove 1c, support arm 10, limiting block 2, limiting groove 2a, through hole 2b, strip connecting part 20, arc-shaped support block 3, stepped hole 3a, adjusting plate 4, positioning platform 40, and front wheel hub of automobile 9. Detailed Implementation

[0029] The present invention will be described in detail below with reference to specific embodiments.

[0030] This utility model relates to a machining fixture for automotive front wheel hubs, mainly used to replace traditional clamping tools, providing a method for precision machining of automotive front wheel hubs (such as...). Figure 1 The special fixture structure used in the process (shown) is a machining tooling for facilitating the machining of the front end face of the automobile front wheel hub without damaging the existing machining surface.

[0031] like Figure 2 As shown, the main structure of the automotive front wheel hub processing fixture of this application includes a mounting plate 1, a limiting block 2, an arc-shaped support block 3, and an adjusting plate 4;

[0032] Mounting plate 1 is used to fix the device to the processing equipment for connection and fixation with intelligent processing equipment or measuring instruments. For ease of connection and use, the rear end of mounting plate 1 is provided with screw holes or a clamping structure compatible with the processing equipment; the clamping structure compatible with the processing equipment refers to a chuck and slot structure.

[0033] The front end face of the mounting plate 1 is provided with three support arms 10 arranged in a ring array. The three-support-arm structure is the most commonly used support structure. On the one hand, it can ensure that the structure has a stable support method, and on the other hand, it can maximize the visible area, making it convenient to observe the processing process and measure the processing area.

[0034] The front ends of the three support arms 10 are flush and each end face is provided with a strip mounting groove 1a for mounting the limiting block 2; in order to ensure that the force is balanced and stable in all directions after clamping, the vertical line of the projection of the strip mounting groove 1a on the front end face of the support arm 10 is perpendicular to the central axis of the mounting plate 1.

[0035] The bottom of the strip mounting groove 1a is provided with a first connecting screw hole 1b;

[0036] Three limiting blocks 2 are respectively inserted into the strip mounting grooves 1a on the three support arms 10; the rear end of the limiting block 2 is provided with a strip connecting part 20 that matches the strip mounting groove 1a, and the front end of the limiting block 2 is provided with a limiting groove 2a. The limiting groove 2a is carved out from the inner side of the front end face of the limiting block, and the outer wall of the limiting groove 2a is arc-shaped. The outer arc-shaped walls of the limiting grooves 2a on the three limiting blocks 2 form an annular positioning surface; the bottom of the limiting groove 2a is provided with a through hole 2b that is directly opposite to the first connecting screw hole 1b.

[0037] To ensure consistent and stable clamping, and to facilitate adjustment, the bottom height of the strip mounting grooves 1a on the three support arms 10 should be flush, and the bottom vertical line should be parallel to the central axis of the mounting plate 1, so as to avoid uneven bottoms that could lead to inconsistent positioning surfaces.

[0038] Three arc-shaped support blocks 3 are installed in the limiting grooves 2a on the three limiting blocks 2. Their outer side is in contact with the outer arc-shaped wall of the limiting groove 2a, and their inner side is an arc surface that matches the outer circle surface of the front wheel hub 9 of the car.

[0039] The inner sides of the three arc-shaped support blocks 3 form an annular limiting surface for positioning the outer circular surface of the front wheel hub 9 of the car.

[0040] The front end face of the mounting plate 1 is provided with an adjustment plate mounting groove 1c. The adjustment plate 4 is installed in the adjustment plate mounting groove 1c. The front end face of the adjustment plate mounting groove 1c is provided with several raised positioning platforms 40. The front end face of the positioning platform 40 is a smooth plane and the height is flush. Each positioning platform 40 forms a uniform support surface for supporting the rear end of the front wheel hub 9 of the car.

[0041] In actual use, the mounting plate 1, the limiting block 2, and the arc-shaped support block 3 are connected and fixed by a group of bolts that pass through the stepped hole 3a, the through hole 2b and then are inserted into the first connecting screw hole 1b.

[0042] To accommodate the processing of automotive front wheel hubs of different sizes and models, this device also includes multiple adjusting discs 4, each with a positioning platform 40 of different heights. It also includes multiple sets of arc-shaped support blocks 3, each with a different inner surface radius.

[0043] Select the corresponding adjustment disc and support block structure according to the specific product model, connect them according to the assembly method, and then insert and fix the front wheel hub of the car. Finally, perform precision machining and measurement on the front end face of the front wheel hub disc.

[0044] In particular, in order to ensure that the clamping and positioning structures of the three combinations can maintain the consistency of structural dimensions, as a preferred method, the limiting block 2 and the arc-shaped support 3 can be made by cutting the ring workpiece after integral processing, so as to ensure the consistency of dimensions of each group of positioning structures.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A tooling for machining a front wheel hub of an automobile, characterized in that, Includes mounting plate (1), limit block (2), arc support block (3), and adjustment plate (4); The mounting plate (1) is used to fix the processing equipment. The rear end of the mounting plate (1) is provided with a screw hole or a clamping structure that matches the processing equipment. The front end of the mounting plate (1) is provided with three support arms (10) arranged in a ring array. The front end faces of the three support arms (10) are flush and each end face is provided with a strip mounting groove (1a). The vertical line of the projection of the strip mounting groove (1a) on the front end face of the support arm (10) is perpendicular to the central axis of the mounting plate (1). The bottom of the strip mounting groove (1a) is provided with a first connecting screw hole (1b); Three limiting blocks (2) are respectively inserted into the strip mounting grooves (1a) on the three support arms (10); the rear end of the limiting block (2) is provided with a strip connecting part (20) that matches the strip mounting groove (1a), and the front end of the limiting block (2) is provided with a limiting groove (2a). The limiting groove (2a) is carved out from the inner side of the front end face of the limiting block, and the outer wall of the limiting groove (2a) is arc-shaped. The outer arc-shaped walls of the limiting grooves (2a) on the three limiting blocks (2) form an annular positioning surface; the bottom of the limiting groove (2a) is provided with a through hole (2b) that is directly opposite to the first connecting screw hole (1b). Three arc-shaped support blocks (3) are installed in the limiting grooves (2a) on the three limiting blocks (2), with their outer side surfaces fitting against the outer arc-shaped wall surface of the limiting groove (2a), and their inner side surfaces being arc surfaces that match the outer circular surface of the front wheel hub (9) of the car; the arc-shaped support blocks (3) are provided with stepped holes (3a) corresponding to the first connecting screw hole (1b) and the through hole (2b); The inner sides of the three arc-shaped support blocks (3) form an annular limiting surface for positioning the outer circular surface of the front wheel hub (9) of the car; The front end face of the mounting plate (1) is provided with an adjustment plate mounting groove (1c). The adjustment plate (4) is installed in the adjustment plate mounting groove (1c). The front end face of the adjustment plate mounting groove (1c) is provided with several raised positioning platforms (40). The front end face of the positioning platform (40) is a smooth plane and the height is flush. Each positioning platform (40) forms a uniform support surface for supporting the rear end of the front wheel hub (9) of the car.

2. The machining fixture for automobile front wheel hubs according to claim 1, characterized in that, The clamping structure that is matched with the processing equipment refers to the chuck and the slot structure.

3. The automotive front wheel hub machining fixture according to claim 1, characterized in that, The limiting block (2) is made by cutting a ring-shaped workpiece after integral processing.

4. The machining fixture for automobile front wheel hubs according to claim 1, characterized in that, The arc-shaped support block (3) is made by cutting a ring-shaped workpiece after integral processing.

5. The machining fixture for automobile front wheel hubs according to claim 1, characterized in that, The bottom of the strip mounting groove (1a) on the three support arms (10) is flush with the bottom and the bottom vertical line is parallel to the central axis of the mounting plate (1).

6. The machining fixture for automobile front wheel hubs according to claim 1, characterized in that, It includes multiple adjustment plates (4), each adjustment plate (4) having a positioning platform (40) of different heights.

7. The machining fixture for automobile front wheel hubs according to claim 1, characterized in that, It includes multiple sets of arc-shaped support blocks (3), each set of arc-shaped support blocks (3) having a different inner surface radius.

8. The machining fixture for automobile front wheel hubs according to claim 1, characterized in that, The mounting plate (1), the limiting block (2), and the arc-shaped support block (3) are connected and fixed by a bolt group that passes through the stepped hole (3a), the through hole (2b) in sequence and is then inserted into the first connecting screw hole (1b).

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