Clamp for heat treatment of automobile plate spring

Abstract

The utility model relates to a fixture for heat treatment of an automobile plate spring, which belongs to the technical field of automobile part treatment equipment and comprises an adjusting seat and a base, an adjusting treatment mechanism is arranged on the adjusting seat and the base and comprises a limit rod fixedly mounted at the top of the base, and a fixing rod is fixedly mounted in the adjusting seat. According to the clamp for heat treatment of the automobile plate spring, through the arranged adjusting treatment mechanism, under the mutual cooperation of all structures on an adjusting seat and a base, the plate spring needing to be machined can be horizontally placed and fixed through a clamping seat, and the plate springs of different specifications can be treated; by the adoption of the mode, the temperature borne by the plate spring during treatment can be kept consistent, the influence of the temperature difference caused by successive entering on the quality of the plate spring is avoided, and therefore the treatment efficiency and quality of the plate spring can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts processing equipment, in particular to a clamp for heat treatment of automobile leaf springs. Background Art

[0002] Automobile leaf spring is the most traditional elastic element in automobile suspension system. It is widely used due to its good reliability, simple structure, short manufacturing process, low cost and greatly simplified structure. Automobile leaf spring is generally composed of several pieces of alloy spring steel of unequal length to form a group of spring beams with approximately equal strength. In the suspension system, in addition to playing a buffering role, when it is placed longitudinally in the car and one end is connected to the frame with a fixed hinge, it can be responsible for transmitting all forces and moments in all directions, as well as determining the trajectory of wheel movement, and playing a guiding role. Therefore, there is no need to set up other guiding mechanisms. In addition, automobile leaf spring is composed of multiple pieces stacked together. When deformed under load, each piece has relative sliding and generates friction, which produces a certain resistance and promotes the vibration attenuation of the car body.

[0003] Leaf springs need to be quenched during production. In the existing treatment method, the quenching machine and the quenching oil pool have a certain angle, and are not immersed in the oil pool vertically for cooling. In this way, one end of the leaf spring will be immersed in the oil pool for cooling first, while the other end is still in a hot state. In this way, different thermal stresses will be formed on both sides of the leaf spring. One end that contacts the oil pool first is quickly cooled to form a contraction compressive stress, while the other end that does not contact the oil pool is still in a hot state, forming an extension tensile stress. Under the action of these two forces, the side of the leaf spring that contacts the oil will inevitably form a concave surface, and the side that contacts the oil will form a convex surface, thus forming a lateral bend. The uneven temperature distribution on the surface and center of the leaf spring will produce thermal stress and structural stress. When these stresses exceed the strength limit of the material, they will cause cracking, thereby resulting in quality defects in the produced leaf springs, affecting their use. Therefore, a fixture for heat treatment of automotive leaf springs is proposed to solve the above technical problems. Utility Model Content

[0004] In view of the shortcomings of the prior art, the utility model provides a clamp for heat treatment of automobile leaf springs, which has the advantages of adjustment and use, simple clamping operation, good treatment effect, etc., and solves the problem that the existing treatment method has a certain angle between the quenching machine and the quenching oil pool, and is not vertically immersed in the oil pool for cooling. The uneven temperature distribution on the surface and center of the leaf spring will produce thermal stress and structural stress. When these stresses exceed the strength limit of the material, it will cause cracking, thereby resulting in quality defects in the produced leaf springs, affecting their use.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: A fixture for heat treatment of automobile leaf springs, comprising an adjustment seat and a base, wherein the adjustment seat and the base are provided with an adjustment processing mechanism;

[0006] The adjustment processing mechanism includes a limit rod fixedly installed on the top of the base, a fixing rod fixedly installed inside the adjustment seat, a brake motor fixedly installed on the inner top wall of the adjustment seat, a threaded rod fixedly installed on the output shaft of the brake motor, and an adjustment block slidably connected to the fixing rod is threadedly connected to the outer side of the threaded rod;

[0007] A movable plate slidably connected to the limit rod is fixedly installed on the right side of the adjustment block, a positioning rod is fixedly installed inside the movable plate, a slider extending to the bottom of the movable plate is slidably connected to the outer side of the positioning rod, and a connecting rod is fixedly installed at the bottom of the slider.

[0008] Furthermore, the adjustment and processing mechanism also includes a clamping seat fixedly installed at the bottom of the connecting rod, the top of the clamping seat is rotatably connected to an adjusting screw, the bottom of the adjusting screw is rotatably connected to a pressure block slidably connected to the clamping seat, the bottom of the movable plate is fixedly installed with a positioning support frame, and the front of the adjustment seat is fixedly installed with a controller.

[0009] Furthermore, a limiting hole is provided inside the adjusting block, and the adjusting block is slidably connected to the fixing rod through the limiting hole.

[0010] Furthermore, a first through slot is provided on the right side of the adjustment seat, and the adjustment block extends through the first through slot to the outside of the adjustment seat and is fixedly connected to the movable plate.

[0011] Furthermore, two through holes are opened inside the movable plate, and the movable plate is slidably connected to the limiting rod through the through holes.

[0012] Furthermore, a second through slot is formed at the bottom of the movable plate, and the sliding block extends to the bottom of the movable plate through the second through slot.

[0013] Furthermore, a threaded hole is provided on the top of the clamping seat, and the adjusting screw is threadedly connected to the clamping seat through the threaded hole.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0015] The fixture for heat treatment of automobile leaf springs can horizontally place the leaf springs to be processed and fixed by the clamping seat through the adjustment and processing mechanism set up, and the adjustment seat and the base cooperate with each other, and can process leaf springs of different specifications, so that the position of the leaf springs can be lowered for quenching operation under the action of the brake motor. In this way, the temperature to which the leaf springs are subjected during processing can be kept consistent, and the temperature difference caused by the sequential entry can be avoided to affect the quality of the leaf springs, thereby helping to improve the efficiency and quality of leaf spring processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic cross-sectional view of the structure of the utility model;

[0017] Figure 2 It is a top view schematic diagram of the structure of the utility model;

[0018] Figure 3 It is a three-dimensional schematic diagram of the local structure of the utility model.

[0019] In the figure: 1. Adjustment seat; 2. Base; 3. Limit rod; 4. Fixing rod; 5. Brake motor; 6. Threaded rod; 7. Adjustment block; 8. Movable plate; 9. Positioning rod; 10. Slider; 11. Connecting rod; 12. Clamping seat; 13. Adjustment screw; 14. Pressing block; 15. Positioning support frame; 16. Controller. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in 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 in 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.

[0021] See also Figure 1-3 A fixture for heat treatment of automobile leaf springs in this embodiment includes an adjustment seat 1 and a base 2, and an adjustment processing mechanism is provided on the adjustment seat 1 and the base 2.

[0022] See also Figure 1 , Figure 2 and Figure 3 The adjustment processing mechanism includes a limit rod 3 fixedly installed on the top of the base 2, a fixing rod 4 is fixedly installed inside the adjustment seat 1, a brake motor 5 is fixedly installed on the inner top wall of the adjustment seat 1, and a threaded rod 6 is fixedly installed on the output shaft of the brake motor 5. The rotation of the brake motor 5 drives the threaded rod 6 to rotate.

[0023] Among them, the outer side of the threaded rod 6 is threadedly connected with an adjusting block 7 which is slidably connected to the fixed rod 4. A limiting hole is provided inside the adjusting block 7. The adjusting block 7 is slidably connected to the fixed rod 4 through the limiting hole, which facilitates the movement of the adjusting block 7 on the threaded rod 6 by the fixed rod 4, so that its position can be stably adjusted.

[0024] Among them, a movable plate 8 slidably connected to the limit rod 3 is fixedly installed on the right side of the adjustment block 7, and a first through groove is opened on the right side of the adjustment seat 1. The adjustment block 7 extends to the outside of the adjustment seat 1 through the first through groove and is fixedly connected to the movable plate 8. Two through holes are opened inside the movable plate 8. The movable plate 8 is slidably connected to the limit rod 3 through the through holes, which facilitates the limiting of the movable plate 8 by the limit rod 3, so that the adjustment block 7 can drive the movable plate 8 to adjust the position more smoothly.

[0025] Among them, a positioning rod 9 is fixedly installed inside the movable plate 8, and a slider 10 extending to the bottom of the movable plate 8 is slidably connected to the outer side of the positioning rod 9. A second through groove is opened at the bottom of the movable plate 8, and the slider 10 extends to the bottom of the movable plate 8 through the second through groove, so that the slider 10 can drive the connecting rod 11 at its bottom to adjust its position through the second through groove. A connecting rod 11 is fixedly installed at the bottom of the slider 10.

[0026] In this embodiment, the adjustment and processing mechanism also includes a clamping seat 12 fixedly installed at the bottom of the connecting rod 11, and the top of the clamping seat 12 is rotatably connected to an adjusting screw 13, and the bottom of the adjusting screw 13 is rotatably connected to a pressure block 14 slidably connected to the clamping seat 12. A threaded hole is opened on the top of the clamping seat 12, and the adjusting screw 13 is threadedly connected to the clamping seat 12 through the threaded hole, so that the leaf spring can be clamped on the clamping seat 12 by the pressure block 14 by rotating the adjusting screw 13 for quenching treatment. A positioning support frame 15 is fixedly installed at the bottom of the movable plate 8, and a controller 16 is fixedly installed on the front of the adjustment seat 1, so that the staff can operate and control the equipment conveniently through the controller 16.

[0027] It should be noted that the fixture for heat treatment of automobile leaf springs, through the adjustment and processing mechanism set up, can place the leaf spring that needs to be processed horizontally and fix it with the clamping seat 12 through the mutual cooperation between the various structures on the adjustment seat 1 and the base 2, and can process leaf springs of different specifications, so that their position can be lowered for quenching operation under the action of the brake motor 5. In this way, the temperature to which the leaf spring is subjected during treatment can be kept consistent, avoiding the influence of temperature difference caused by entering in sequence on the quality of the leaf spring, thereby helping to improve the efficiency and quality of leaf spring processing.

[0028] The working principle of the above embodiment is:

[0029] When using the fixture for heat treatment of automobile leaf springs, first, the position of the connecting rod 11 is adjusted by sliding the slider 10 on the positioning rod 9 according to the width of the leaf spring. After appropriate adjustment, the leaf spring to be processed is placed inside the clamping seat 12, and the adjusting screw 13 is rotated to drive the pressure block 14 to clamp and fix it. After the installation is completed, the positioning support frame 15 also contacts the top of the leaf spring. Then, the brake motor 5 is started to drive the threaded rod 6 to rotate so that the adjusting block 7 drives the movable plate 8 to adjust the position, so that various parts of the leaf spring are synchronously contacted with the treatment liquid, thereby reducing the uneven temperature distribution on the surface and center of the leaf spring caused by the temperature difference, which will generate thermal stress and tissue stress, cause cracking, and thus lead to quality defects in the produced leaf springs, thereby improving the treatment effect and treatment quality of the leaf springs.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fixture for heat treatment of automobile leaf springs, comprising an adjustment seat (1) and a base (2), characterized in that: The adjustment seat (1) and the base (2) are provided with an adjustment processing mechanism; The adjustment processing mechanism comprises a limit rod (3) fixedly mounted on the top of the base (2); a fixing rod (4) is fixedly mounted inside the adjustment seat (1); a brake motor (5) is fixedly mounted on the inner top wall of the adjustment seat (1); a threaded rod (6) is fixedly mounted on the output shaft of the brake motor (5); and an adjustment block (7) slidably connected to the fixing rod (4) is threadedly connected to the outer side of the threaded rod (6); A movable plate (8) slidably connected to the limit rod (3) is fixedly installed on the right side of the adjustment block (7); a positioning rod (9) is fixedly installed inside the movable plate (8); a slider (10) extending to the bottom of the movable plate (8) is slidably connected to the outer side of the positioning rod (9); and a connecting rod (11) is fixedly installed at the bottom of the slider (10).

2. The fixture for heat treatment of automobile leaf springs according to claim 1, characterized in that: The adjustment and processing mechanism also includes a clamping seat (12) fixedly mounted on the bottom of the connecting rod (11); the top of the clamping seat (12) is rotatably connected to an adjusting screw (13); the bottom of the adjusting screw (13) is rotatably connected to a pressure block (14) slidably connected to the clamping seat (12); a positioning support frame (15) is fixedly mounted on the bottom of the movable plate (8); and a controller (16) is fixedly mounted on the front of the adjustment seat (1).

3. The fixture for heat treatment of automobile leaf springs according to claim 1, characterized in that: A limiting hole is provided inside the adjusting block (7), and the adjusting block (7) is slidably connected to the fixing rod (4) via the limiting hole.

4. The fixture for heat treatment of automobile leaf springs according to claim 1, characterized in that: A first through slot is provided on the right side of the adjustment seat (1), and the adjustment block (7) extends through the first through slot to the outside of the adjustment seat (1) and is fixedly connected to the movable plate (8).

5. The fixture for heat treatment of automobile leaf springs according to claim 1, characterized in that: Two through holes are provided inside the movable plate (8), and the movable plate (8) is slidably connected to the limiting rod (3) via the through holes.

6. The fixture for heat treatment of automobile leaf springs according to claim 1, characterized in that: A second through slot is provided at the bottom of the movable plate (8), and the sliding block (10) extends to the bottom of the movable plate (8) through the second through slot.

7. The fixture for heat treatment of automobile leaf springs according to claim 2, characterized in that: A threaded hole is provided on the top of the clamping seat (12), and the adjusting screw (13) is threadedly connected to the clamping seat (12) through the threaded hole.

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