Clamp special for brake drum machining

Abstract

The utility model relates to the technical field of automobile part machining, in particular to a clamp special for brake drum machining. Comprising a base, a motor is fixedly connected into the base, a lead screw is arranged at the output end of the motor, a lead screw sleeve is in threaded connection with the outer side of the lead screw, a plurality of first connecting seats are fixedly connected with the outer side of the lead screw sleeve, a plurality of sliding plates are slidably connected to the base, and limiting sliding blocks penetrating through the top wall of the base are fixedly connected to the bottoms of the sliding plates; the bottom of the limiting sliding block is fixedly connected with a second connecting base, the first connecting base and the second connecting base located on the same side are connected through a connecting rod, the sliding plate is fixedly connected with an outer supporting vertical plate, the top end of the outer supporting vertical plate is fixedly connected with a fixing plate, a screw penetrates through the fixing plate, and the top end of the screw is fixedly connected with a rotary knob. The bottom end of the screw rod is rotationally connected with a pressing block in sliding connection with the outer supporting vertical plate. In order to solve the problems that in the prior art, the clamping effect on a brake drum is poor, and the brake drum is prone to sliding, the utility model provides a clamp special for brake drum machining.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts processing, in particular to a special clamp for brake drum processing. Background Art

[0002] The brake drum is a friction pair of the drum brake. In addition to the strength and rigidity required as a component, it should also have the highest and most stable friction coefficient, as well as appropriate wear resistance, heat resistance, heat dissipation and heat capacity. During the processing of the brake drum, a fixture is required to clamp and fix the brake drum.

[0003] However, when clamping the brake drum, the existing brake drum processing fixture generally clamps the outer side of the brake drum through a three-jaw chuck or a four-jaw chuck to prevent the brake drum from moving, but this type of fixture has a poor clamping effect and is prone to positioning deviation; at the same time, it is impossible to press and fix the top of the brake drum, resulting in vertical sliding during the brake drum processing, causing the benchmark processing and drilling processing accuracy of the brake drum surface to decrease. Utility Model Content

[0004] The utility model aims to solve the problems of poor clamping effect and easy sliding of brake drums in the prior art, and proposes a special clamp for processing brake drums.

[0005] The technical solution adopted by the utility model is: a special fixture for brake drum processing, comprising a base, a motor fixedly connected to the base, a screw rod being provided at the output end of the motor, a screw rod sleeve being threadedly connected to the outer side of the screw rod, a plurality of connecting seats 1 being fixedly connected to the outer side of the screw rod, a plurality of sliding plates being slidably connected to the base, a limiting slider penetrating through the top wall of the base being fixedly connected to the bottom of the sliding plate, a connecting seat 2 being fixedly connected to the bottom of the limiting slider, the connecting seat 1 and the connecting seat 2 located on the same side are connected by a connecting rod, an external support vertical plate being fixedly connected to the sliding plate, a fixing plate being fixedly connected to the top of the external support vertical plate, a screw rod being passed through the fixing plate, a knob being fixedly connected to the top of the screw, and a pressure block slidably connected to the external support vertical plate being rotatably connected to the bottom of the screw.

[0006] As a further improvement of the utility model, the top end of the screw rod is rotatably connected to the base via a bearing.

[0007] As a further improvement of the utility model, two sliding blocks 1 are fixedly connected to the bottom of the sliding plate, and a guide sliding groove 1 for sliding the sliding blocks 1 is provided on the top wall of the base.

[0008] As a further improvement of the utility model, a limiting sliding groove for the limiting sliding block to pass through and slide is provided on the top wall of the base.

[0009] As a further improvement of the utility model, both ends of the connecting rod are hinged to the connecting seat 1 and the connecting seat 2 respectively through a rotating shaft.

[0010] As a further improvement of the utility model, the screw is threadedly connected to the fixing plate, and the fixing plate is provided with a thread groove for the screw to pass through.

[0011] As a further improvement of the utility model, the bottom end of the screw is rotatably connected to the pressing block via a second bearing.

[0012] As a further improvement of the utility model, a second slide block is fixedly connected to one side of the pressure block close to the outer supporting plate, and a second guide groove for the second slide block to slide is provided on the outer supporting plate.

[0013] The beneficial effects of the utility model are as follows: when the brake drum is clamped and fixed, the brake drum is sleeved on the outside of multiple external support plates, and the multiple external support plates are moved outward by driving the motor. When the external support plates move to contact the inner wall of the brake drum, the external support plates fix the brake drum. Fixing the brake drum from the inside improves the stability of the brake drum fixation; at the same time, the knob can be rotated to move the pressure block downward to press and fix the top of the brake drum, avoiding the brake drum from sliding in the vertical direction during the processing, thereby further improving the clamping and fixing effect of the brake drum, and then improving the benchmark processing and drilling processing accuracy of the brake drum surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of a special fixture for brake drum processing of the utility model;

[0015] Figure 2 It is a partial cross-sectional view of a special fixture for processing brake drums of the utility model;

[0016] Figure 3 The utility model is a partial structural schematic diagram of a special clamp for processing a brake drum.

[0017] As shown in the figure: 1. Base; 2. Motor; 3. Screw; 4. Screw sleeve; 5. Connecting seat 1; 6. Sliding plate; 7. Limiting slider; 8. Connecting seat 2; 9. Connecting rod; 10. External support plate; 11. Fixed plate; 12. Screw; 13. Knob; 14. Pressure block; 15. Bearing 1; 16. Slider 1; 17. Guide slide 1; 18. Limiting slide; 19. Rotating shaft; 20. Bearing 2; 21. Slider 2; 22. Guide slide 2. DETAILED DESCRIPTION

[0018] The directional terms such as up, down, left, right, front, back, front, back, top, bottom, etc. mentioned or may be mentioned in this specification are defined relative to their structure and are relative concepts. Therefore, they may change accordingly according to their different locations and different usage states; therefore, these or other directional terms should not be interpreted as restrictive terms.

[0019] The singular forms "a", "said" and "the" used in this specification are intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0020] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and implementation methods. It should be understood that the implementation methods described herein are only used to explain this application and are not used to limit this application.

[0021] The utility model provides the following Figure 1 , Figure 2 , Figure 3 A special fixture for brake drum processing is shown, including a base 1, a motor 2 is fixedly connected inside the base 1, a screw 3 is provided at the output end of the motor 2, a screw sleeve 4 is threadedly connected to the outer side of the screw 3, a plurality of connecting seats 5 are fixedly connected to the outer side of the screw sleeve 4, a plurality of sliding plates 6 are slidably connected to the base 1, a limiting slider 7 passing through the top wall of the base 1 is fixedly connected to the bottom of the sliding plate 6, a connecting seat 2 8 is fixedly connected to the bottom of the limiting slider 7, the connecting seat 1 5 and the connecting seat 2 8 located on the same side are connected by a connecting rod 9, an external support plate 10 is fixedly connected to the sliding plate 6, a fixing plate 11 is fixedly connected to the top of the external support plate 10, a screw 12 is passed through the fixing plate 11, a knob 13 is fixedly connected to the top of the screw 12, and a pressure block 14 slidably connected to the external support plate 10 is rotatably connected to the bottom of the screw 12.

[0022] like Figure 2 and Figure 3 As shown, in the utility model, the top end of the screw rod 3 is rotatably connected to the base 1 through a bearing 15, thereby improving the stability of the screw rod 3 when rotating.

[0023] like Figure 1 , Figure 2 , Figure 3As shown, in the utility model, two sliders 16 are fixedly connected to the bottom of the sliding plate 6, a guide slot 17 for the slider 16 to slide is provided on the top wall of the base 1, and a limit slot 18 for the limit slider 7 to pass and slide is provided on the top wall of the base 1. Through the mutual cooperation between the slider 16 and the guide slot 17, and the mutual cooperation between the limit slider 7 and the limit slot 18, a limit guide function is played, and when the screw 3 rotates, the screw sleeve 4 can slide stably, and at the same time, the stability of the sliding plate 6 when sliding is improved.

[0024] like Figure 2 and Figure 3 As shown, both ends of the connecting rod 9 in the present invention are respectively hinged to the connecting seat 1 5 and the connecting seat 2 8 through the rotating shaft 19. When the screw sleeve 4 slides, the angle formed between the connecting rod 9 and the screw rod 3 will change.

[0025] like Figure 1 and Figure 2 As shown, in the utility model, the screw 12 is threadedly connected with the fixed plate 11, and the fixed plate 11 is provided with a threaded groove for the screw 12 to pass through. When the screw 12 rotates, it will slide, thereby driving the pressure block 14 to slide downward. The bottom end of the screw 12 is rotatably connected to the pressure block 14 through a bearing 20. A slider 21 is fixedly connected to the side of the pressure block 14 close to the outer support plate 10. The outer support plate 10 is provided with a guide groove 22 for the slider 21 to slide. Through the mutual cooperation of the slider 21 and the guide groove 22, a limiting guide function is played, and when the screw 12 rotates, the pressure block 14 can slide stably.

[0026] Working principle: In the specific implementation of the utility model, the brake drum is first installed on the base 1 and is sleeved on the outside of multiple external support plates 10, and then the motor 2 is controlled to start and drive the screw rod 3 to rotate. When the screw rod 3 rotates, the screw rod sleeve 4 and the connecting seat 1 5 will slide upward. At this time, the angle formed between the connecting rod 9 and the screw rod 3 becomes larger, so the sliding plate 6 is driven to slide outward through the connecting seat 2 8 and the limit slider 7. When the sliding plate 6 slides, it will drive the external support rod 10 to move outward. When the external support plate 10 moves to contact the inner wall of the brake drum, the external support plate 10 fixes the brake drum, and then the motor 2 is controlled to stop, and the brake drum is fixed from the inside, which improves the stability of the brake drum fixation; then the knob 13 is turned to drive the screw rod 12 to rotate, and when the screw rod 12 rotates, it will slide downward, thereby driving the pressure block 14 to move downward to press and fix the top of the brake drum, avoiding the brake drum from sliding in the vertical direction during the processing, thereby further improving the clamping and fixing effect of the brake drum, and then improving the benchmark processing and drilling processing accuracy of the brake drum surface.

[0027] The above implementation modes are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned implementation modes, a person skilled in the art should understand that the technical solutions described in the aforementioned implementation modes can still be modified, or some of the technical features can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the implementation modes of the present invention.

Claims

1. A special fixture for brake drum processing, comprising a base (1), characterized in that: A motor (2) is fixedly connected inside the base (1), a screw rod (3) is provided at the output end of the motor (2), a screw rod sleeve (4) is threadedly connected to the outer side of the screw rod (3), a plurality of connecting seats (5) are fixedly connected to the outer side of the screw rod sleeve (4), a plurality of sliding plates (6) are slidably connected to the base (1), a limiting slider (7) penetrating through the top wall of the base (1) is fixedly connected to the bottom of the sliding plate (6), and a connecting seat (8) is fixedly connected to the bottom of the limiting slider (7). The connecting seat 1 (5) and the connecting seat 2 (8) located on the same side are connected by a connecting rod (9); the sliding plate (6) is fixedly connected to an outer supporting plate (10); the top of the outer supporting plate (10) is fixedly connected to a fixing plate (11); a screw rod (12) is passed through the fixing plate (11); the top of the screw rod (12) is fixedly connected to a knob (13); the bottom of the screw rod (12) is rotatably connected to a pressure block (14) slidably connected to the outer supporting plate (10).

2. The special fixture for brake drum machining according to claim 1, characterized in that: The top end of the screw rod (3) is rotatably connected to the base (1) via a bearing 1 (15).

3. The special fixture for brake drum machining according to claim 1, characterized in that: The bottom of the sliding plate (6) is fixedly connected to two sliding blocks (16), and the top wall of the base (1) is provided with a guide groove (17) for the sliding blocks (16) to slide.

4. The special fixture for brake drum machining according to claim 1, characterized in that: The top wall of the base (1) is provided with a limiting sliding groove (18) for the limiting sliding block (7) to pass through and slide.

5. The special fixture for brake drum machining according to claim 1, characterized in that: Both ends of the connecting rod (9) are respectively hinged to the connecting seat 1 (5) and the connecting seat 2 (8) through a rotating shaft (19).

6. The special fixture for brake drum machining according to claim 1, characterized in that: The screw rod (12) is threadedly connected to the fixing plate (11), and the fixing plate (11) is provided with a thread groove for the screw rod (12) to pass through.

7. The special fixture for brake drum machining according to claim 1, characterized in that: The bottom end of the screw rod (12) is rotatably connected to the pressing block (14) via a second bearing (20).

8. The special fixture for brake drum machining according to claim 1, characterized in that: The pressure block (14) is fixedly connected to a second sliding block (21) on one side close to the outer supporting plate (10), and the outer supporting plate (10) is provided with a second guiding groove (22) for the second sliding block (21) to slide.

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