High-frequency quenching machine for brake camshaft production

Abstract

The utility model relates to the technical field of brake camshaft production, in particular to a high-frequency quenching machine for brake camshaft production, which comprises a quenching cooling box, a clamping seat is rotatably mounted in the middle of the bottom end of the inner side of the quenching cooling box, and a camshaft body is clamped in the middle of the top of the clamping seat. A left elastic clamping block, a right elastic clamping block, a movable cover frame, a side sliding block, a movable guide rod and a connecting rod are arranged on the cam shaft body, a limiting tip is arranged at the top position of the cam shaft body, and a movable top plate is fixedly connected to the top end of the limiting tip. According to the high-frequency quenching machine capable of conveniently producing the brake cam shaft, the cam shaft with the rotating deviation problem can be quickly rectified and corrected by utilizing homodromous springback acting force generated after the left elastic clamping block and the right elastic clamping block are extruded respectively, and the phenomenon that the cam shaft is too long due to rotating deviation during machining is avoided; and the phenomenon of non-uniform heating of the equipment in the subsequent process is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of brake camshaft production, in particular to a high-frequency quenching machine for brake camshaft production. Background Art

[0002] In addition to bearing certain bending and torsion loads during operation, the brake camshaft is also required to have good strength and surface wear resistance. Therefore, considering the use environment and conditions of the brake camshaft, the workshop generally uses high-frequency quenching equipment to perform surface quenching on the brake camshaft, so that the durability and willfulness of the brake camshaft after quenching are significantly improved, ensuring that the engine can still maintain a good working condition after long-term use;

[0003] When an existing high-frequency quenching machine processes a camshaft component taken out of a machine tool by coil heating, the camshaft is usually required to maintain vertical rotation. However, considering that a camshaft that is too long is prone to rotational deviation due to unstable movement during vertical rotation, uneven heating will occur when the equipment processes the camshaft, affecting the work quality of the camshaft after quenching. Therefore, a high-frequency quenching machine for brake camshaft production is proposed to address the above problem. Utility Model Content

[0004] The utility model aims to provide a high-frequency quenching machine for producing brake camshafts, so as to solve the problem in the above background technology that the rotation offset of the overlong camshaft when it rotates vertically will be unfavorable for the equipment to uniformly heat the camshaft.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A high-frequency quenching machine for producing a brake camshaft comprises a quenching cooling box, a clamping seat is rotatably installed at the middle position of the inner bottom end of the quenching cooling box, and a camshaft body is clamped at the top middle end position of the clamping seat, a limiting top is provided at the top position of the camshaft body, and a movable top plate is fixedly connected to the top of the limiting top, a movable cover frame is provided on the outside of the limiting top, a right elastic clamp block is provided at the lower right position of the inner side of the movable cover frame, and a left elastic clamp block is provided at the lower left position of the inner side of the movable cover frame, front and rear ends of the left elastic clamp block and the right elastic clamp block are respectively fixedly connected to side sliders, and a movable guide rod is fixedly connected to one side position of the side slider, the outer sleeve of the movable guide rod is provided with a spring, and a group of the springs are connected by a connecting rod.

[0007] Preferably, a vertical guide rail is provided at the middle position of the inner rear end of the quenching cooling box, and second telescopic rods are fixedly installed on both sides of the horizontal end of the vertical guide rail, the movable end of the second telescopic rod is connected to one end of the movable top plate, and the vertical central axis of the movable top plate and the vertical central axis of the limiting top are arranged to overlap.

[0008] Preferably, the center point of the limiting top and the center point of the clamping seat are arranged to overlap, and the clamping seat and the limiting top are arranged opposite to each other with the camshaft body in between.

[0009] Preferably, a vertical slide is slidably connected to the middle of the vertical end of the vertical guide rail, and a quenching ring is fixedly connected to the front end of the vertical slide, a heating coil is provided at the middle of the inner side of the quenching ring, and spray heads are respectively provided above and below the inner wall of the quenching ring, the spray heads are arranged in a circular array structure, a cavity conductively connected to the spray head is opened on the inner side of the quenching ring, and the camshaft body passes through the inner sides of the quenching ring and the heating coil respectively.

[0010] Preferably, the movable cover frame has a trapezoidal structure in appearance, and a first telescopic rod is respectively provided at the lower middle position on both sides of the movable cover frame, the movable end of the first telescopic rod and the connecting rod are adjacent to each other on the left and right sides, the movable guide rod is slidably connected to the movable cover frame through a side slider, the two side ends of the spring are respectively connected to the side slider and the movable cover frame, the right elastic clamp block and the left elastic clamp block are respectively provided with a "V"-shaped groove structure at the middle position on one side close to the camshaft body, and rollers are respectively rotatably installed at the middle position on one side end surface of the right elastic clamp block and the left elastic clamp block.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] In the utility model, by providing a left elastic clamp block, a right elastic clamp block, a movable cover frame, a side slide block, a movable guide rod and a connecting rod, it is convenient for the high-frequency quenching machine for producing the brake camshaft to be able to quickly correct and adjust the camshaft with the processing offset problem when quenching an overlong camshaft by respectively utilizing the same-direction rebound force generated after squeezing the left elastic clamp block and the right elastic clamp block. By being able to perform auxiliary correction processing on the overlong camshaft during the processing of the overlong camshaft, it is possible to avoid the phenomenon of uneven heating of the equipment due to rotation offset during the processing of the overlong camshaft, and at the same time, it is possible to ensure the working quality of the equipment during the quenching processing of the camshaft, so that the utility model can solve the technical problems raised in the above-mentioned background technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the top installation structure defined by the utility model;

[0015] Figure 3 This is a schematic diagram of the internal structure of the movable cover frame of the utility model;

[0016] Figure 4 This is a schematic diagram of the roller installation structure of the utility model;

[0017] Figure 5 It is a schematic diagram of the top view of the structure of the right elastic clamp block and the left elastic clamp block of the utility model.

[0018] In the figure: 1, quenching and cooling box; 2, vertical guide rail; 3, clamping seat; 4, camshaft body; 5, limiting top; 6, movable top plate; 7, movable cover frame; 8, right elastic clamp block; 9, left elastic clamp block; 10, side slide block; 11, movable guide rod; 12, spring; 13, connecting rod; 14, first telescopic rod; 15, roller; 16, quenching ring; 17, heating coil; 18, spray head; 19, vertical slide seat; 20, second telescopic rod. DETAILED DESCRIPTION

[0019] 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.

[0020] See also Figure 1-5 , the utility model provides a technical solution:

[0021] A high-frequency quenching machine for producing a brake camshaft comprises a quenching cooling box 1, a clamping seat 3 is rotatably mounted at the middle position of the inner bottom end of the quenching cooling box 1, and a camshaft body 4 is clamped at the top middle end position of the clamping seat 3, a limiting top 5 is provided at the top position of the camshaft body 4, and a movable top plate 6 is fixedly connected to the top of the limiting top 5, a movable cover frame 7 is provided on the outside of the limiting top 5, a right elastic clamp block 8 is provided at the lower right position of the inner side of the movable cover frame 7, and a left elastic clamp block 9 is provided at the lower left position of the inner side of the movable cover frame 7, front and rear ends of the left elastic clamp block 9 and the right elastic clamp block 8 are respectively fixedly connected with side sliders 10, and a movable guide rod 11 is fixedly connected to one side position of the side slider 10, a spring 12 is provided on the outer sleeve of the movable guide rod 11, and a group of springs 12 are connected by a connecting rod 13.

[0022] like Figure 1 and Figure 2As shown, a vertical guide rail 2 is provided at the middle position of the inner rear end of the quenching cooling box 1, and second telescopic rods 20 are fixedly installed at the positions on both sides of the horizontal end of the vertical guide rail 2, and the movable end of the second telescopic rod 20 is connected to one end of the movable top plate 6, and the vertical center axis of the movable top plate 6 and the vertical center axis of the limiting top 5 are overlapped. After a single brake camshaft is first fixed to the clamping seat 3 and kept vertically placed, the second telescopic rod 20 will push the limiting top 5 out from under the movable top plate 6, so that the limiting top 5 after falling into place abuts against the top of the brake camshaft, so that both ends of it are limited; the center point of the limiting top 5 and the center point of the clamping seat 3 are overlapped, and the clamping seat 3 and the limiting top 5 are relatively arranged with the camshaft body 4 in between. When the lower end of the camshaft is inserted into the clamping seat 3 and the top end abuts against the limiting top 5, the camshaft fixed up and down can be kept stably upright, so that subsequent stable operation can be carried out. Quenching operation: A vertical slide 19 is slidably connected to the middle position of the vertical end of the vertical guide rail 2, and a quenching ring 16 is fixedly connected to the front end of the vertical slide 19, a heating coil 17 is provided at the middle position of the inner side of the quenching ring 16, and spray heads 18 are respectively provided above and below the inner wall of the quenching ring 16, and the spray heads 18 are arranged in a circular array structure, and a cavity connected to the spray head 18 is opened on the inner side of the quenching ring 16, and the camshaft body 4 passes through the inner sides of the quenching ring 16 and the heating coil 17 respectively. When the brake camshaft is fixed between the limiting top 5 and the clamping seat 3, it will just pass through the quenching ring 16 and the heating coil 17 at the same time. When the quenching assembly composed of the quenching ring 16 and the heating coil 17 slides up and down in the vertical direction, the equipment will first use the heating coil 17 to heat the camshaft, and then use the cooling water sprayed from the spray head 18 to clean the surface of the camshaft.

[0023] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the movable cover frame 7 has a trapezoidal structure, and first telescopic rods 14 are respectively provided at the lower middle positions on both sides of the movable cover frame 7, the movable ends of the first telescopic rods 14 and the connecting rods 13 are adjacently arranged at the left and right positions, the movable guide rods 11 are slidably connected with the movable cover frame 7 through the side sliders 10, the two side ends of the spring 12 are respectively connected with the side sliders 10 and the movable cover frame 7, the right elastic clamp block 8 and the left elastic clamp block 9 are respectively provided with "V"-shaped groove structures at the middle positions of one side close to the camshaft body 4, and rollers 15 are respectively rotatably installed at the middle positions of the end surfaces of one side of the right elastic clamp block 8 and the left elastic clamp block 9. When the right elastic clamp block 8 and the left elastic clamp block 9 squeeze the camshaft, the setting of the two rows of rollers 15 mainly plays a role in assisting the camshaft to rotate, so as to prevent the right elastic clamp block 8 and the left elastic clamp block 9 from directly contacting the camshaft and causing surface friction.

[0024] Working process: When using the high-frequency quenching machine to produce and process brake camshafts, a single brake camshaft can be first fixed to the clamping seat 3, and then the camshaft can be fixed by limiting the pressure of the top 5 on the shaft body, and then the driving device installed at the bottom end of the quenching cooling box 1 is controlled to start. When the single brake camshaft is rotated by the clamping seat 3, the screw transmission structure installed on the inner side of the vertical end of the vertical guide rail 2 will drive the vertical slide 19 to slide back and forth up and down, so that the quenching assembly composed of the quenching ring 16 and the heating coil 17 can be evenly heated from the outside of the camshaft. At the same time, when the cooling water flows to the multiple spray heads 18 respectively through the reserved cavity inside the quenching ring 16, the high-end quenching machine will also use the cooling water from the upper and lower rows of spray heads 18 to heat the camshaft. The cooling water is used to spray and rinse the outer surface of the camshaft to ensure that the camshaft can be cooled in time after quenching. In the high-frequency quenching machine, the overlong camshaft is limited by the clamping seat 3 and the limiting top 5 respectively so that the quenching operation can be carried out. When the overlong camshaft is rotated and offset during vertical rotation, the left elastic clamp block 9 and the right elastic clamp block 8 will be squeezed respectively to make the spring 12 elastically deformed. Then, the left elastic clamp block 9 and the right elastic clamp block 8 respectively utilize the rebound force generated by the deformation of the two groups of springs 12 to achieve rebound reset. At the same time, the two will also use their own same-direction extrusion on the camshaft body 4 to quickly correct the camshaft that has positional offset during rotation, ensuring that it can achieve stable vertical rotation between the clamping seat 3 and the limiting top 5.

[0025] Although the 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 high-frequency quenching machine for producing a brake camshaft, comprising a quenching cooling box (1), characterized in that: A clamping seat (3) is rotatably mounted at the middle position of the inner bottom end of the quenching cooling box (1), and a camshaft body (4) is clamped at the middle position of the top end of the clamping seat (3). A limiting top (5) is provided at the top position of the camshaft body (4), and the top end of the limiting top (5) is fixedly connected to a movable top plate (6). A movable cover frame (7) is provided outside the limiting top (5), a right elastic clamp block (8) is provided at the lower right position of the inner side of the movable cover frame (7), and a left elastic clamp block (9) is provided at the lower left position of the inner side of the movable cover frame (7), and the front and rear ends of the left elastic clamp block (9) and the right elastic clamp block (8) are respectively fixedly connected to side sliders (10), and a movable guide rod (11) is fixedly connected to one side of the side slider (10), and a spring (12) is sleeved on the outside of the movable guide rod (11), and a group of the springs (12) are connected by a connecting rod (13).

2. The high-frequency quenching machine for producing a brake camshaft according to claim 1, characterized in that: A vertical guide rail (2) is provided at the middle position of the inner rear end of the quenching cooling box (1), and second telescopic rods (20) are fixedly installed at both sides of the horizontal end of the vertical guide rail (2), the movable end of the second telescopic rod (20) is connected to one end of the movable top plate (6), and the vertical center axis of the movable top plate (6) and the vertical center axis of the limiting top (5) are arranged to overlap.

3. The high-frequency quenching machine for producing a brake camshaft according to claim 1, characterized in that: The center point of the limiting top (5) and the center point of the clamping seat (3) are arranged to overlap, and the clamping seat (3) and the limiting top (5) are arranged relative to each other with the camshaft body (4) in between.

4. The high-frequency quenching machine for producing a brake camshaft according to claim 2, characterized in that: A vertical slide seat (19) is slidably connected to the middle of the vertical end of the vertical guide rail (2), and a quenching ring (16) is fixedly connected to the front end of the vertical slide seat (19). A heating coil (17) is provided at the middle of the inner side of the quenching ring (16), and spray heads (18) are respectively provided above and below the inner wall of the quenching ring (16). The spray heads (18) are arranged in a ring array structure. A cavity is provided on the inner side of the quenching ring (16) and is conductively connected to the spray heads (18). The camshaft body (4) passes through the inner sides of the quenching ring (16) and the heating coil (17), respectively.

5. The high-frequency quenching machine for producing a brake camshaft according to claim 1, characterized in that: The movable cover frame (7) has a trapezoidal structure, and first telescopic rods (14) are respectively provided at the middle positions below both sides of the movable cover frame (7), and the movable ends of the first telescopic rods (14) are adjacent to the left and right positions between the connecting rods (13). The movable guide rod (11) is slidably connected to the movable cover frame (7) through the side sliders (10), and the two side ends of the spring (12) are respectively connected to the side sliders (10) and the movable cover frame (7). The right elastic clamp block (8) and the left elastic clamp block (9) are respectively provided with "V"-shaped groove structures at the middle positions of one side close to the camshaft body (4), and rollers (15) are respectively rotatably installed at the middle positions of one side end surfaces of the right elastic clamp block (8) and the left elastic clamp block (9).

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