Clamp for quenching treatment of camshaft

Abstract

The utility model discloses a camshaft quenching treatment fixture which comprises a base, a threaded rod is fixed in the middle of the upper end of the base, limiting rods are arranged on the left side and the right side of the threaded rod, the two limiting rods are both fixed at the upper end of the base, and two groups of fixture assemblies are arranged on the outer side of the threaded rod in a sleeved mode. The two groups of clamp assemblies are symmetrically distributed up and down and are used for fixing the cam shaft; and the clamp assembly comprises a support arranged on the outer sides of the threaded rod and the limiting rod in a sleeving mode, a middle bearing of the support is sleeved with a sleeve, the sleeve is arranged on the outer side of the threaded rod in a threaded sleeving mode, through openings are formed in the support at equal angles, clamping plates are slidably installed in the through openings at equal angles, and the clamping plates are used for clamping the cam shaft. According to the clamp for quenching treatment of the camshafts, the effect of synchronously clamping the multiple camshafts is achieved through the control mechanism, the fixing efficiency is improved, meanwhile, clamping parts can be replaced, and the quenching effect is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of clamps, in particular to a clamp for quenching a camshaft. Background Art

[0002] The camshaft is a component in a piston engine. Its main body is a cylindrical rod with a length approximately the same as that of the cylinder group. The camshaft needs to be quenched during processing, and the camshaft needs to be fixed with the help of a clamp during the quenching process.

[0003] In the prior art, in a patent application with the authorization publication number CN217459497U and the authorization publication date 2022-09-20, entitled "A clamp for quenching a camshaft", when in use, the camshaft is placed between the two clamping jaws, and then the bidirectional threaded screw is rotated, and both ends of the bidirectional threaded screw have external threads with opposite thread directions, and the slide groove can limit the rotation of the two sliders, so that when the bidirectional threaded screw rotates, the two sliders will slide and approach each other, and the two sliders drive the two clamping jaws to approach each other to clamp and fix the camshaft. According to the above method, multiple clamping assemblies are used to clamp and fix multiple camshafts, so that multiple camshafts can be fixed at the same time when the camshaft is subjected to the quenching process, thereby increasing the number of camshaft quenching and thereby improving the processing efficiency of the camshaft;

[0004] When the above device is actually used, when clamping multiple camshafts, they need to be clamped and fixed in sequence, which has a low fixing efficiency. The camshaft is clamped by only one set of clamping components, which has poor stability. Moreover, this clamping method affects the quenching effect of the clamping part of the camshaft.

[0005] Therefore, we propose a camshaft quenching fixture to solve the above-mentioned problems. Utility Model Content

[0006] 1. Technical problems to be solved by the utility model:

[0007] The utility model aims to provide a fixture for quenching a camshaft to solve the problems in the current market raised by the above background technology.

[0008] 2. Technical solution:

[0009] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a camshaft quenching treatment fixture, comprising a base, a threaded rod is fixed to the middle of the upper end of the base, and limit rods are arranged on the left and right sides of the threaded rod, and the two limit rods are fixed to the upper end of the base, and two sets of fixture assemblies are sleeved on the outer side of the threaded rod, and the two sets of fixture assemblies are symmetrically distributed up and down, and the fixture assemblies are used to fix the camshaft;

[0010] The clamp assembly includes a bracket sleeved on the outside of the threaded rod and the limit rod, a sleeve is sleeved on the middle bearing of the bracket, and the sleeve is threadedly sleeved on the outside of the threaded rod, a through hole is opened at an equal angle inside the bracket, and a clamping plate is installed at an equal angle inside the through hole, and the clamping plate is used to clamp the camshaft;

[0011] A control mechanism is installed inside the bracket, and the control mechanism is used to drive a plurality of clamping plates to move synchronously.

[0012] Furthermore, the threaded rod and the limiting rod are arranged in parallel, and the limiting rod and the bracket form an up and down sliding structure.

[0013] Through the above technical solution, when the sleeve rotates, the bracket can be driven to move up and down.

[0014] Furthermore, the control mechanism includes a gear plate with a bearing installed inside the bracket, a driving member is fixed to the lower end of the gear plate, the driving member consists of a worm and a worm wheel, the worm bearing is installed on the bracket, and the worm wheel is fixed on the gear plate.

[0015] Through the above technical solution, when the worm is rotated, the gear plate can be driven to rotate.

[0016] Furthermore, the control mechanism also includes a rotating ring with a bearing installed inside the bracket, the rotating ring is cocentric with the through hole, and the outer wall of the rotating ring is equipped with gear blocks at equal angles, and the inner wall of the rotating ring is equipped with protrusions at equal angles, and the gear blocks and the gear plate form a meshing structure.

[0017] Through the above technical solution, when the gear plate rotates, the rotating ring and the protrusion can be driven to rotate.

[0018] Furthermore, the side wall of the protrusion fits with the end of the clamping plate, and the protrusion and the clamping plate are arranged in a one-to-one correspondence, and both ends of the clamping plate are arranged in an arc shape.

[0019] Through the above technical solution, after the protrusion rotates, it can be pressed against the clamping plate to drive the clamping plate to move.

[0020] Furthermore, a pressure spring is connected between the clamping plate and the bracket, and the clamping plate and the bracket form a fitting sliding mechanism.

[0021] Through the above technical solution, the splint can be reset by the pressure spring.

[0022] 3. Beneficial effects:

[0023] By adopting the technical solution provided by the utility model, compared with the prior art, the camshaft quenching treatment fixture of the utility model can achieve the effect of synchronously clamping multiple camshafts through a control mechanism, improve the fixing efficiency, and at the same time, the clamping part can be replaced to ensure the quenching effect. The specific contents are as follows:

[0024] First, place the camshafts in the openings at the bottom in sequence, and then rotate the corresponding worm. The worm drives the gear plate to rotate by meshing with the worm wheel. When the gear plate rotates, the gear plate drives the rotating ring to rotate inside the bracket by meshing with the tooth block. The rotating ring can drive the convex block to rotate synchronously. The convex block will be pressed against the corresponding clamping plate during the rotation process. Several clamping plates are forced to move synchronously toward the side of the camshaft inside the bracket to clamp and fix the end of the camshaft, thereby improving the fixing efficiency.

[0025] Then rotate the sleeve at the bottom to drive the multiple camshafts upward, so that the camshafts are away from the base, and then rotate the sleeve at the top to drive the upper clamp assembly downward until the upper opening is set on the outside of the camshaft, and then rotate the worm at the top to fix the upper part of the camshaft in the same way as the above working principle. The camshaft has stronger stability under the limit action of the upper and lower ends;

[0026] At the same time, the corresponding clamp assembly can be driven to move up and down by rotating the sleeve, so as to replace the clamping part of the camshaft and ensure the quenching effect of the clamping part of the camshaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the overall side-view stereoscopic structure of the utility model;

[0028] Figure 2 This is a schematic diagram of the three-dimensional structure of the clamp assembly of the utility model from a side view;

[0029] Figure 3 This is a schematic diagram of the three-dimensional structure of the gear plate of the utility model from a side view;

[0030] Figure 4 This is a schematic diagram of the top-sectional structure of the bracket of the utility model;

[0031] Figure 5 It is a schematic diagram of the top-sectional structure of the through opening of the utility model.

[0032] In the figure: 1. base; 2. threaded rod; 3. limit rod; 4. bracket; 5. sleeve; 6. gear plate; 7. through port; 8. driving member; 81. worm; 82. worm wheel; 9. swivel; 91. gear block; 92. protrusion; 10. splint; 11. pressure spring. DETAILED DESCRIPTION

[0033] In order to facilitate the understanding of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "page", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0036] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", "provided with", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Example

[0037] See also Figure 1-5A clamp for quenching a camshaft comprises a base 1, a threaded rod 2 is fixed to the middle of the upper end of the base 1, and limit rods 3 are arranged on the left and right sides of the threaded rod 2, and the two limit rods 3 are fixed to the upper end of the base 1, and two sets of clamp assemblies are sleeved on the outer side of the threaded rod 2, and the two sets of clamp assemblies are symmetrically distributed up and down, and the clamp assembly is used to fix the camshaft; the clamp assembly comprises a bracket 4 sleeved on the outer side of the threaded rod 2 and the limit rod 3, a sleeve 5 is sleeved on the middle bearing of the bracket 4, and the sleeve 5 is threadedly sleeved on the outer side of the threaded rod 2, a through hole 7 is opened at an equal angle inside the bracket 4, and a clamp plate 10 is installed at an equal angle inside the through hole 7, and the clamp plate 10 is used to clamp the camshaft; a control mechanism is installed inside the bracket 4, and the control mechanism is used to drive a plurality of clamp plates 10 to move synchronously; the threaded rod 2 and the limit rod 3 are arranged in parallel, and the limit rod 3 and the bracket 4 form an up and down sliding structure;

[0038] Combination Figure 1-2 As shown, first, the camshafts are placed in the through openings 7 at the bottom in sequence, and then the lower ends of the camshafts are fixed by the clamp assembly at the bottom, and then the sleeve 5 at the bottom is rotated to drive the multiple camshafts to move upward, so that the camshafts are away from the base 1, and then the sleeve 5 at the top is rotated to drive the upper clamp assembly to move downward, until the through opening 7 at the top is sleeved on the outer side of the camshaft, and the upper part of the camshaft is fixed by the clamp assembly at the top. Under the limiting action of the upper and lower ends of the camshaft, the stability is stronger, and at the same time, the sleeve 5 can be rotated to drive the corresponding clamp assembly to move up and down, and the clamping part of the camshaft can be replaced to ensure the quenching effect of the clamping part of the camshaft;

[0039] The control mechanism includes a gear plate 6 with a bearing mounted inside the bracket 4, a driving member 8 is fixed at the lower end of the gear plate 6, the driving member 8 is composed of a worm 81 and a worm wheel 82, and the worm 81 is mounted on the bracket 4, and the worm wheel 82 is fixed on the gear plate 6; the control mechanism also includes a swivel 9 with a bearing mounted inside the bracket 4, the swivel 9 is cocentric with the through opening 7, and a tooth block 91 is mounted at an equal angle on the outer wall of the swivel 9, and a protrusion 92 is mounted at an equal angle on the inner wall of the swivel 9, and the tooth block 91 and the gear plate 6 form a meshing structure; the side wall of the protrusion 92 fits with the end of the clamping plate 10, and the protrusion 92 is arranged one-to-one with the clamping plate 10, and both ends of the clamping plate 10 are arranged in an arc shape; a pressure spring 11 is connected between the clamping plate 10 and the bracket 4, and the clamping plate 10 and the bracket 4 form a fitting sliding mechanism;

[0040] Combination Figure 2-5As shown, when the lower end of the camshaft is placed in the through opening 7 located below, the corresponding worm 81 is rotated, and the worm 81 drives the gear plate 6 to rotate by meshing with the worm wheel 82. When the gear plate 6 rotates, the gear plate 6 drives the swivel 9 to rotate inside the bracket 4 by meshing with the tooth block 91. The swivel 9 can drive the protrusion 92 to rotate synchronously. The protrusion 92 will be squeezed toward the corresponding clamping plate 10 during the rotation process. Several clamping plates 10 are subjected to force to move synchronously toward the side of the camshaft inside the bracket 4, clamping and fixing the end of the camshaft to improve the fixing efficiency.

[0041] Working principle: When using the camshaft quenching fixture, Figure 1-5 As shown, first, the lower end of the camshaft is placed in the through-port 7 located below, and the corresponding worm 81 is rotated. The control mechanism is used to squeeze the clamp 10, and several clamps 10 are forced to move synchronously toward the side of the camshaft to clamp and fix the end of the camshaft to improve the fixing efficiency. Then, the lower sleeve 5 is rotated to drive multiple camshafts to move up and away from the base 1, and then the upper sleeve 5 is rotated to drive the upper clamp assembly to move down until the upper through-port 7 is sleeved on the outside of the camshaft, and the upper clamp assembly is used to fix the upper part of the camshaft. Under the limiting action of the upper and lower ends, the camshaft has stronger stability. At the same time, the sleeve 5 can be rotated to drive the corresponding clamp assembly to move up and down, and the clamping part of the camshaft can be replaced to ensure the quenching effect of the clamping part of the camshaft.

[0042] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0043] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A camshaft quenching fixture, characterized in that: The base (1) comprises a threaded rod (2) fixed at the middle of the upper end of the base (1), and limit rods (3) are arranged on the left and right sides of the threaded rod (2), and the two limit rods (3) are fixed to the upper end of the base (1), and two sets of clamp assemblies are sleeved on the outer side of the threaded rod (2), and the two sets of clamp assemblies are symmetrically distributed up and down, and the clamp assemblies are used to fix the camshaft; The clamp assembly comprises a bracket (4) sleeved on the outside of the threaded rod (2) and the limit rod (3); a sleeve (5) is sleeved on the middle bearing of the bracket (4); and the sleeve (5) is threadedly sleeved on the outside of the threaded rod (2); a through hole (7) is opened at an equal angle inside the bracket (4); and a clamping plate (10) is slidably installed at an equal angle inside the through hole (7); and the clamping plate (10) is used to clamp the camshaft; A control mechanism is installed inside the bracket (4), and the control mechanism is used to drive a plurality of clamping plates (10) to move synchronously.

2. A camshaft quenching fixture according to claim 1, characterized in that: The threaded rod (2) and the limiting rod (3) are arranged in parallel, and the limiting rod (3) and the bracket (4) form an up-and-down sliding structure.

3. The camshaft quenching fixture according to claim 1, characterized in that: The control mechanism comprises a gear plate (6) whose bearing is mounted inside the bracket (4); a driving member (8) is fixed to the lower end of the gear plate (6); the driving member (8) is composed of a worm (81) and a worm wheel (82); the bearing of the worm (81) is mounted on the bracket (4), and the worm wheel (82) is fixed on the gear plate (6).

4. The camshaft quenching fixture according to claim 1, characterized in that: The control mechanism further comprises a rotating ring (9) with a bearing mounted inside the bracket (4), the rotating ring (9) being cocentric with the through opening (7), and tooth blocks (91) being mounted at equal angles on the outer wall of the rotating ring (9), and protrusions (92) being mounted at equal angles on the inner wall of the rotating ring (9), and the tooth blocks (91) and the gear plate (6) forming a meshing structure.

5. A camshaft quenching fixture according to claim 4, characterized in that: The side wall of the protrusion (92) fits with the end of the clamping plate (10), and the protrusion (92) and the clamping plate (10) are arranged in a one-to-one correspondence, and both ends of the clamping plate (10) are arranged in an arc shape.

6. The camshaft quenching fixture according to claim 1, characterized in that: A pressure spring (11) is connected between the clamping plate (10) and the bracket (4), and the clamping plate (10) and the bracket (4) form a fitting sliding mechanism.

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