Positioning clamp for machining automobile engine housing

Abstract

The utility model provides a positioning fixture for processing an automobile engine housing, which belongs to the technical field of positioning fixture equipment, and comprises a base, a workbench is fixedly connected to the surface of the base, three grooves and three positioning clamping mechanisms are arranged on the surface of the workbench at equal intervals, and the three positioning clamping mechanisms are respectively arranged in the three grooves. And the positioning mechanism comprises a positioning assembly and a clamping assembly, and the positioning assembly comprises two first guide rods fixedly connected between the inner walls of the groove. Compared with the prior art, the positioning assembly is arranged, so that the automobile engine cover shell clamping device has high applicability and is still applicable to some irregular automobile engine cover shells, the positioning range of the positioning assembly is wide, the automobile engine cover shells can be clamped and fixed through the clamping assembly arranged in a matched mode, operation is convenient and fast, and the applicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of positioning fixture equipment, in particular to a positioning fixture for processing an automobile engine cover. Background Art

[0002] The positioning fixture for engine hood processing is a device specially used to position and fix the engine hood to be processed. Its main function is to fix and position the engine hood to ensure the stability and accuracy of the processing process. The positioning fixture for engine hood processing is an important processing auxiliary device, which can effectively improve the processing quality and efficiency of the engine hood and reduce the labor intensity of workers.

[0003] After searching, the patent document with publication number CN215470643U discloses an engine casing positioning fixture, including a workbench, a placing table is provided at the upper end of the workbench, telescopic rods are provided on both sides of the upper end of the placing table, a mounting plate is provided at the front end of the telescopic rod, a splint is provided at the front end of the mounting plate, and sliding rods are welded at both ends of one side of the splint. The utility model can adjust the fixed engine cover to a certain angle after clamping, which is convenient for processing.

[0004] The above prior art often has the following problems when used:

[0005] When using the existing positioning fixture for processing automobile engine hoods, since the shape of the automobile engine hoods is irregular, regular-shaped clamps should not be used for clamping when positioning, clamping and fixing the automobile engine hoods. At the same time, since automobile engine hoods are often processed using very thin aluminum alloy castings, too strong a clamping method may cause the surface of the automobile engine hood to deform, affecting the processing. Utility Model Content

[0006] Aiming at the deficiencies existing in the prior art, the utility model provides a positioning fixture for machining an automobile engine cover.

[0007] The embodiment of the utility model provides a positioning fixture for processing an automobile engine cover, comprising:

[0008] A base, a workbench is fixedly connected to the surface of the base, and three grooves are equidistantly arranged on the surface of the workbench;

[0009] Three positioning and clamping mechanisms, the three positioning and clamping mechanisms are respectively arranged in three grooves, the positioning and clamping mechanisms include a positioning assembly and a clamping assembly, the positioning assembly includes two No. 1 guide rods fixedly connected between the inner walls of the grooves, the two No. 1 guide rods are slidably sleeved with a No. 1 slider, a support rod is fixedly connected between the two No. 1 sliders, the upper surfaces of the support rods are fixedly connected with a concave plate, two No. 2 guide rods are fixedly connected between the inner walls on both sides of the concave plate, the two No. 2 guide rods are slidably sleeved with a No. 2 slider, the surface of the No. 2 slider is fixedly connected with a support tube, and a No. 1 spring is fixedly connected between the side wall of the support tube and the inner wall of the groove.

[0010] Furthermore, the clamping assembly includes a threaded hole provided on the surface of the supporting tube, a threaded rod is threadedly connected to the inner thread of the threaded hole, a positioning tube is fixedly connected to the top end of the threaded rod, a fixing plate is fixedly connected to the side wall of the supporting tube, a sliding rod is fixedly connected to the upper surface of the fixing plate, a sleeve rod is slidably sleeved on the outer side of the sliding rod, a No. 2 spring is fixedly connected between the bottom surface of the sleeve rod and the upper surface of the fixing plate, the side wall of the sleeve rod is fixedly connected to the connecting frame, and a pressure plate is fixedly connected to the bottom end of the connecting frame.

[0011] Furthermore, the second spring is sleeved outside the sliding rod, and the cross-sections of the sliding rod and the sleeve rod are both rectangular.

[0012] Furthermore, the axial extension lines of the three No. 1 springs intersect.

[0013] Furthermore, a positioning rod is provided on the surface of the workbench, and the positioning rod is located between the three grooves.

[0014] Furthermore, the center projections of the pressing plate, the supporting cylinder and the positioning cylinder in each of the positioning and clamping mechanisms all coincide.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The utility model is also useful for some irregular automobile engine hoods by setting a positioning component, and has strong applicability. The three positioning components cooperate with each other so that the positioning support forms a triangular area, which is relatively stable, and the positioning component has a wide positioning range. The clamping components that are provided in combination can clamp and fix the automobile engine hood after it is positioned through the clamping components that cooperate with each positioning component. The operation is convenient and the applicability is strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure analysis of a positioning fixture for processing an automobile engine cover described in an embodiment of the utility model.

[0018] Figure 2The present invention is a three-dimensional structural schematic diagram of a positioning fixture for machining an automobile engine cover described in an embodiment of the present invention.

[0019] Figure 3 The present invention is a three-dimensional structural schematic diagram of a positioning fixture positioning assembly for machining an automobile engine cover described in an embodiment of the present utility model.

[0020] Figure 4 for Figure 1 Enlarged view of point A.

[0021] In the above drawings: 1 base, 2 workbench, 3 groove, 4 No. 1 guide rod, 5 No. 1 slider, 6 support rod, 7 concave plate, 8 No. 2 guide rod, 9 No. 2 slider, 10 support cylinder, 11 No. 1 spring, 12 threaded rod, 13 positioning cylinder, 14 fixing plate, 15 sliding rod, 16 sleeve rod, 17 No. 2 spring, 18 connecting frame, 19 pressure plate, 20 positioning rod. DETAILED DESCRIPTION

[0022] The technical solution of the present utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0023] like Figure 1-Figure 4 As shown, the embodiment of the utility model provides a positioning fixture for processing an automobile engine cover, comprising:

[0024] A base 1 is fixedly connected to a workbench 2 on the surface of the base 1. Three grooves 3 are equidistantly arranged on the surface of the workbench 2. Three positioning and clamping mechanisms are respectively arranged in the three grooves 3. The positioning and clamping mechanisms include a positioning component and a clamping component. The positioning component includes two No. 1 guide rods 4 fixedly connected between the inner walls of the grooves 3. No. 1 sliders 5 are slidably sleeved on the two No. 1 guide rods 4. A support rod 6 is fixedly connected between the two No. 1 sliders 5. A concave plate 7 is fixedly connected to the upper surface of the support rod 6. Two inner walls on both sides of the concave plate 7 are fixedly connected. A No. 2 guide rod 8 is provided, and the two No. 2 guide rods 8 are in a vertical position relationship with the two No. 1 guide rods 4. A No. 2 slider 9 is slidably sleeved on the two No. 2 guide rods 8. In order to limit the No. 2 slider 9 from deflecting during sliding, a support cylinder 10 is fixedly connected to the surface of the No. 2 slider 9. A No. 1 spring 11 is fixedly connected between the side wall of the support cylinder 10 and the inner side wall of the groove 3. The elastic force of the No. 1 spring 11 is relatively large. The axial extension lines of the three No. 1 springs 11 intersect. A positioning rod 20 is provided on the surface of the workbench 2. The positioning rod 20 is located between the three grooves 3 and is used for positioning before fixing;

[0025] The clamping assembly includes a threaded hole provided on the surface of the supporting tube 10, a threaded rod 12 is connected with a thread in the threaded hole, a positioning tube 13 is fixedly connected with the top of the threaded rod 12, a fixing plate 14 is fixedly connected to the side wall of the supporting tube 10, a sliding rod 15 is fixedly connected to the upper surface of the fixing plate 14, a sleeve rod 16 is slidably sleeved on the outside of the sliding rod 15, a No. 2 spring 17 is fixedly connected between the bottom surface of the sleeve rod 16 and the upper surface of the fixing plate 14, a side wall of the sleeve rod 16 is fixedly connected to a connecting frame 18, a pressing plate 19 is fixedly connected to the bottom end of the connecting frame 18, the No. 2 spring 17 is sleeved outside the sliding rod 15, and the cross-sections of the sliding rod 15 and the sleeve rod 16 are both rectangular. The rectangular cross-section ensures that even if the sleeve rod 16 slides on the sliding rod 15, it will not deflect in the reverse direction, thereby ensuring the normal operation of the clamping assembly, the center projections of the pressing plate 19, the supporting tube 10 and the positioning tube 13 in each positioning clamping mechanism coincide, so that the positioning assembly and the clamping assembly can cooperate well, thereby improving the clamping effect.

[0026] The detailed working process of the utility model is as follows:

[0027] Before use, first match the through hole on the automobile engine hood with the positioning rod 20, and sleeve it outside the positioning rod 20, then use the positioning assembly to position it, first select the general direction in which the automobile engine hood is fixed, then pull the support tube 10, and pull the support tube 10 to the bottom of the automobile engine hood, because the automobile engine hood is a concave structure, it is positioned through three positioning assemblies, and the first slider 5 slides on the first guide rod 4 to achieve vertical movement, and then the second slider 9 slides on the two second guide rods 8 to achieve lateral movement, and then the two cooperate with each other so that the support tube 10 can move Move to various places in the groove 3. It should be noted that the automobile engine hood to be clamped and positioned cannot be too large, because the device requires three No. 1 springs 11 to maintain a strong pulling force when the device is used. Because the support cylinder 10 can be moved to various places in the groove 3, when positioning, the support cylinder 10 is moved to the bottom of the automobile engine hood, so that the side wall of the positioning cylinder 13 is against the inner wall of the automobile engine hood, and the three positioning cylinders 13 are driven to separate by the three support cylinders 10 with a tendency to move away from each other, and then the three cooperate with each other to form a stable triangular support area to achieve the positioning of the automobile engine hood;

[0028] Before completing the positioning, when moving the positioning cylinder 13 into the car engine hood, it is necessary to first pull the pressure rod 1 upwards, and provide an upward pulling force through the connecting frame 18 to overcome the elastic force of the No. 2 spring 17. Then, when the positioning cylinder is moved into the car engine hood, release the connecting frame 18. Under the action of the No. 2 spring 17, the pressure plate 19 always has a tendency to move downward, and then it can cooperate with the concentric positioning cylinder to clamp and fix the car engine hood. When the side wall of the car engine hood is too high, or the elastic force provided by the No. 2 spring 17 is insufficient, the positioning cylinder 13 can be rotated to make the threaded rod 12 engage with the threaded hole, thereby moving the positioning cylinder 13 upward, so that the No. 2 spring 17 is further compressed, and the clamping force is increased until it is stably clamped. The three positioning and clamping mechanisms cooperate to achieve stable positioning and clamping effects, which are efficient, convenient and highly applicable.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A positioning fixture for processing an automobile engine cover, characterized in that: include: A base (1), a workbench (2) being fixedly connected to the surface of the base (1), and three grooves (3) being equidistantly arranged on the surface of the workbench (2); Three positioning and clamping mechanisms, the three positioning and clamping mechanisms are respectively arranged in three grooves (3), the positioning and clamping mechanisms include a positioning assembly and a clamping assembly, the positioning assembly includes two No. 1 guide rods (4) fixedly connected between the inner walls of the groove (3), the two No. 1 guide rods (4) are slidably sleeved with a No. 1 slider (5), a support rod (6) is fixedly connected between the two No. 1 sliders (5), the upper surface of the support rod (6) is fixedly connected with a concave plate (7), two No. 2 guide rods (8) are fixedly connected between the inner walls of both sides of the concave plate (7), the two No. 2 guide rods (8) are slidably sleeved with a No. 2 slider (9), the surface of the No. 2 slider (9) is fixedly connected with a support tube (10), and a No. 1 spring (11) is fixedly connected between the side wall of the support tube (10) and the inner wall of the groove (3).

2. A positioning fixture for processing an automobile engine cover according to claim 1, characterized in that: in: The clamping assembly comprises a threaded hole arranged on the surface of a support tube (10), a threaded rod (12) is threadedly connected to the threaded hole, a positioning tube (13) is fixedly connected to the top of the threaded rod (12), a fixing plate (14) is fixedly connected to the side wall of the support tube (10), a sliding rod (15) is fixedly connected to the upper surface of the fixing plate (14), a sleeve rod (16) is slidably sleeved on the outside of the sliding rod (15), a No. 2 spring (17) is fixedly connected between the bottom surface of the sleeve rod (16) and the upper surface of the fixing plate (14), the side wall of the sleeve rod (16) is fixedly connected to a connecting frame (18), and a pressure plate (19) is fixedly connected to the bottom end of the connecting frame (18).

3. A positioning fixture for processing an automobile engine cover according to claim 2, characterized in that: in: The second spring (17) is sleeved outside the sliding rod (15), and the cross sections of the sliding rod (15) and the sleeve rod (16) are both rectangular.

4. A positioning fixture for processing an automobile engine cover according to claim 1, characterized in that: in: The axial extension lines of the three No. 1 springs (11) intersect.

5. A positioning fixture for processing an automobile engine cover according to claim 1, characterized in that: in: A positioning rod (20) is provided on the surface of the workbench (2), and the positioning rod (20) is located between the three grooves (3).

6. A positioning fixture for processing an automobile engine cover according to claim 2, characterized in that: in: The projections of the centers of the pressing plate (19), the supporting cylinder (10) and the positioning cylinder (13) in each positioning clamping mechanism all coincide.

Images