Clamping device for camshaft machining
By designing a clamping device including a work frame, a bidirectional screw, a gear, a toothed ring, a sliding ring, a connecting rod, a clamp, a slider and a limiting assembly, the problems of complex structure, cumbersome operation and high cost of camshaft processing in the prior art are solved, and more efficient and more stable camshaft processing is achieved.
Patent Information
- Application Number
- CN202422116979.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-30
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-08-30
AI Technical Summary
The existing camshaft machining fixtures have complex structures, cumbersome operations, and high costs, which can easily lead to movement of the camshaft and hole-punching offset.
A clamping device including a work frame, a bidirectional screw, a gear, a toothed ring, a sliding ring, a connecting rod, a clamp, a slider and a limiting assembly is designed. The sliding ring and connecting ring are moved by a bidirectional screw and gear, and the clamping assembly fixes the camshaft, while the limiting assembly prevents axial deflection.
The device simplifies operation, improves the fixing efficiency and stability of the camshaft, avoids axial deflection, and reduces production costs.
Smart Images
Figure CN223029127U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of camshaft processing, and specifically relates to a clamping device for camshaft processing. Background Technique
[0002] The processing of camshafts is basically forging blanks, then cutting processing, and then finishing and polishing. The methods of processing camshafts include horizontal machine tools and vertical machine tools. Horizontal machine tools have a large floor area, low space utilization rate, and high production costs. Therefore, vertical machine tools are generally selected. When processing the end face of a camshaft with a vertical machine tool, it is necessary to use a fixture to set it vertically. At present, when processing a camshaft with a vertical machine tool, the selection of the fixture is particularly important. The existing fixtures have a complex structure, a cumbersome operation process and a high cost, which easily cause the camshaft to move, resulting in offset of the drilling process. Moreover, during the use of most clamping devices, due to the severe impact and vibration of the processed parts, axial or radial offset often occurs, affecting the processing quality. For this reason, we propose a clamping device for camshaft processing to solve the above problems. Content of the Utility Model
[0003] The purpose of the utility model is to provide a clamping device for camshaft processing to solve the problems in the above background technique that the existing fixture has a complex structure, a cumbersome operation process and a high cost, which easily cause the camshaft to move, resulting in offset of the drilling process.
[0004] To achieve the above purpose, the utility model provides the following technical solution: A clamping device for camshaft processing, including a workbench.
[0005] Through holes are respectively opened in the upper and lower ends of the workbench. First chutes are symmetrically opened at the left and right ends of the workbench. Two-way screws are rotatably installed in the two first chutes. Gears are fixedly installed at the upper ends of the two two-way screws. A toothed ring is rotatably installed in the upper end of the workbench. The two gears are meshed with the toothed ring. Clamping components are arranged at the two first chutes and the upper and lower ends of the workbench. A limiting component is arranged on the clamping component.
[0006] Preferably, the clamping component includes two sliding rings. The two sliding rings are slidably installed in the two first chutes. Connecting rings are installed on the two sliding rings. A plurality of connecting rods are annularly installed on the inner walls of the two connecting rings. Clamping blocks are rotatably installed on the plurality of connecting rods. Sliders are fixedly installed on the plurality of clamping blocks. A plurality of second chutes are symmetrically opened in the upper and lower directions in the workbench. The plurality of sliders are slidably installed in the plurality of second chutes.
[0007] Preferably, the plurality of connecting rods are all inclined. The inner diameters of the two through holes are smaller than the inner diameters of the two sliding rings and the two connecting rings.
[0008] Preferably, the inner walls of the multiple groups of the second sliding grooves and the multiple groups of sliding blocks are all T-shaped, and the multiple groups of sliding blocks are adapted to the inner walls of the multiple groups of second sliding grooves.
[0009] Preferably, the limiting assembly includes multiple groups of fixing blocks, the multiple groups of fixing blocks are fixedly installed on the clamping blocks, multiple groups of clamping grooves are formed in the multiple groups of fixing blocks, a limiting rod is installed between the multiple groups of fixing blocks, plug blocks are fixedly installed at the upper and lower ends of the multiple groups of limiting rods, two groups of movable grooves are formed in each of the multiple groups of plug blocks, springs are installed in the multiple groups of movable grooves, and limiting blocks are movably installed at the openings of the multiple groups of movable grooves.
[0010] Preferably, the upper and lower opposite sides of the multiple groups of limiting blocks are both inclined, and the inclined surfaces of the multiple groups of limiting blocks face the fixing blocks.
[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows: by rotating the two groups of bidirectional screws, the two groups of gears and the toothed ring drive the two groups of sliding rings and the two groups of connecting rings to move synchronously upward and downward on the tool rest respectively. The two groups of connecting rings drive the multiple groups of clamping blocks to clamp and fix the camshaft inserted into the tool rest through the multiple groups of connecting rods, so as to facilitate the processing of camshafts of different sizes, improve the practicability of the tooling and the processing efficiency of the camshaft. When the multiple groups of clamping blocks move, they synchronously drive the multiple groups of limiting rods to move closer to the camshaft, so that the multiple groups of limiting rods are attached to both sides of the cams on the camshaft, and the camshaft can be limited when it is fixed in the tool rest, avoiding axial deflection when processing the rotating holes at the upper and lower ends of the camshaft, and improving the stability during the processing of the camshaft. Description of the Drawings
[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model, and those of ordinary skill in the art can also obtain other drawings based on these drawings without creative efforts.
[0013] Figure 1 It is a front view structural schematic diagram of the present utility model;
[0014] Figure 2 It is a front view sectional structural schematic diagram of the present utility model;
[0015] Figure 3 It is a front view sectional structural schematic diagram of the clamping block in the present utility model;
[0016] Figure 4 For the present utility model Figure 2 Partial enlarged schematic diagram of A therein;
[0017] Figure 5 For the present utility modelFigure 3 Partial enlarged schematic diagram of B in the figure.
[0018] In the figure: 1, workbench; 2, through hole; 3, first chute; 4, bidirectional screw; 5, sliding ring; 6, connecting ring; 7, connecting rod; 8, clamping block; 9, slider; 10, second chute; 11, fixed block; 12, clamping groove; 13, limiting rod; 14, inserting block; 15, movable groove; 16, spring; 17, limiting block; 18, gear; 19, toothed ring. Specific implementation mode
[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.
[0020] Please refer to Figures 1-5 , an embodiment provided by the present invention: a clamping device for camshaft processing, including a workbench 1,
[0021] Through holes 2 are respectively opened in the upper and lower ends of the workbench 1, first chutes 3 are symmetrically opened at the left and right ends of the workbench 1, bidirectional screws 4 are rotatably installed in the two groups of first chutes 3, gears 18 are fixedly installed at the upper ends of the two groups of bidirectional screws 4, a toothed ring 19 is rotatably installed in the upper end of the workbench 1, the two groups of gears 18 are engaged with the toothed ring 19, clamping assemblies are arranged at the upper and lower ends of the two groups of first chutes 3 and the workbench 1, and a limiting assembly is arranged on the clamping assembly. The device drives the clamping assembly to move by rotating the two groups of bidirectional screws 4, so as to clamp and fix the camshaft inserted into the workbench 1, which is convenient for processing the upper and lower ends of the camshaft. And when the clamping assembly moves, it drives the limiting assembly to move synchronously, and the limiting assembly fits with the cams on the camshaft, so as to limit and prevent deflection when the camshaft is clamped and fixed.
[0022] Furthermore, the clamping assembly includes two groups of sliding rings 5, the two groups of sliding rings 5 are slidably installed in the two groups of first chutes 3, connecting rings 6 are installed on the two groups of sliding rings 5, a plurality of connecting rods 7 are annularly installed on the inner walls of the two groups of connecting rings 6, clamping blocks 8 are rotatably installed on the plurality of connecting rods 7, sliders 9 are fixedly installed on the plurality of clamping blocks 8, a plurality of second chutes 10 are symmetrically opened up and down in the workbench 1, and the plurality of sliders 9 are slidably installed in the plurality of second chutes 10. When the two groups of sliding rings 5 and the two groups of connecting rings 6 move, the plurality of clamping blocks 8 are driven to slide close in the upper and lower ends of the workbench 1 through the plurality of connecting rods 7, and the plurality of clamping blocks 8 slide close to clamp and fix the camshaft inserted into the workbench 1, so as to complete the processing and fixing of the camshaft and improve the fixing efficiency of the camshaft.
[0023] Furthermore, the multiple sets of connecting rods 7 are all arranged in an inclined shape. The inner diameters of the two through holes 2 are smaller than the inner diameters of the two sliding rings 5 and the two connecting rings 6. According to this structure, when the multiple sets of connecting rods 7 move through the two connecting rings 6 and are inclined, they can drive the multiple sets of clamping blocks 8 to slide closer. And when the camshaft is inserted into the tool holder 1 through the two through holes 2, the inner walls of the two sliding rings 5 and the two connecting rings 6 do not fit with the camshaft.
[0024] Furthermore, the inner walls of the multiple sets of second sliding grooves 10 and the multiple sets of sliders 9 are both T-shaped, and the multiple sets of sliders 9 are adapted to the inner walls of the multiple sets of second sliding grooves 10. According to this structure, based on the shapes of the inner walls of the multiple sets of second sliding grooves 10 and the multiple sets of sliders 9, the multiple sets of sliders 9 can slide parallel in the multiple sets of second sliding grooves 10, and the multiple sets of sliders 9 cannot be separated from the second sliding grooves 10 under external forces.
[0025] Furthermore, the limiting component includes multiple sets of fixing blocks 11, the multiple sets of fixing blocks 11 are fixedly installed on the clamping blocks 8, card slots 12 are opened in the multiple sets of fixing blocks 11, a limiting rod 13 is installed between the multiple sets of fixing blocks 11, inserting blocks 14 are fixedly installed at the upper and lower ends of the multiple sets of limiting rods 13, two sets of movable grooves 15 are opened in the multiple sets of inserting blocks 14, springs 16 are installed in the multiple sets of movable grooves 15, and limiting blocks 17 are movably installed at the openings of the multiple sets of movable grooves 15. According to this structure, the inserting blocks 14 at the upper and lower ends of the multiple sets of limiting rods 13 are inserted into the fixing blocks 11, and the multiple sets of limiting blocks 17 pop out and are stuck in the fixing blocks 11 under the restoring force of the multiple sets of springs 16, so that when the multiple sets of clamping blocks 8 slide, they synchronously drive the multiple sets of limiting rods 13 to move closer to the camshaft, and the multiple sets of limiting rods 13 are attached to both sides of the cams on the camshaft, thereby preventing axial deflection during the machining of the camshaft and improving the limiting and fixing effect on the camshaft.
[0026] Furthermore, the upper and lower opposite sides of the multiple sets of limiting blocks 17 are both inclined, and the inclined surfaces of the multiple sets of limiting blocks 17 face the fixing blocks 11. According to this structure, based on the shapes of the multiple sets of limiting blocks 17, when the inserting blocks 14 at the upper and lower ends of the limiting rod 13 are inserted into the two fixing blocks 11, the limiting blocks 17 can slide into the movable grooves 15 when the inclined surfaces of the limiting blocks 17 are squeezed.
[0027] Working principle: When clamping and fixing the camshaft, as Figure 2 and Figure 4As shown in the figure, when rotating the two sets of bidirectional screws 4, the two sets of bidirectional screws 4 are mutually driven through two sets of gears and a toothed ring, so that rotating one set of bidirectional screws 4 can drive the other set of bidirectional screws 4 to rotate. The rotation of the two sets of bidirectional screws 4 drives the two sets of sliding rings 5 to slide synchronously in the two sets of first chutes 3. The sliding of the two sets of sliding rings 5 drives the two sets of connecting rings 6 to move closer to the upper and lower ends of the tool holder 1. The sliding of the two sets of connecting rings 6 drives the rotation of multiple connecting rods 7, and the multiple connecting rods 7 drive the multiple sliders 9 on the multiple clamping blocks 8 to slide in the multiple second chutes 10. The multiple clamping blocks 8 slide closer to the camshaft inserted into the two through holes 2, and the camshaft can be fixed in the tool holder 1, as Figure 3 and Figure 5 shown. First, insert the insertion blocks 14 at the upper and lower ends of the multiple limit rods 13 into the fixing blocks 11 on the clamping blocks 8. When the insertion blocks 14 are inserted into the fixing blocks 11, the limit blocks 17 in the multiple movable slots 15 pop out and are inserted into the multiple card slots 12 under the restoring force of the multiple springs 16, so that the multiple limit rods 13 can be fixedly connected to the multiple clamping blocks 8. The synchronous movement of the multiple clamping blocks 8 drives the multiple limit rods 13 to approach the camshaft, and the multiple limit rods 13 are attached to both sides of the cams on the camshaft, so as to limit the camshaft. The above is the entire working principle of the present utility model.
[0028] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, it is intended to include all changes falling within the meaning and scope of the equivalent elements of the claims in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.
Claims
1. A clamping device for camshaft processing, comprising a work frame (1), characterized in that: Through holes (2) are provided at both upper and lower ends of the work frame (1); first slide grooves (3) are symmetrically provided at both left and right ends of the work frame (1); two sets of bidirectional screws (4) are rotatably installed in the two sets of the first slide grooves (3); gears (18) are fixedly installed at the upper ends of the two sets of the bidirectional screws (4); a gear ring (19) is rotatably installed in the upper end of the work frame (1); the two sets of the gears (18) are meshed with the gear ring (19); clamping assemblies are provided at both upper and lower ends of the two sets of the first slide grooves (3) and the work frame (1); and a limit assembly is provided on the clamping assembly.
2. A camshaft processing clamping device according to claim 1, characterized in that: The clamping assembly comprises two groups of sliding rings (5), the two groups of sliding rings (5) are slidably installed in two groups of first sliding grooves (3), the two groups of sliding rings (5) are both installed with connecting rings (6), multiple groups of connecting rods (7) are annularly installed on the inner walls of the two groups of connecting rings (6), clamping blocks (8) are rotatably installed on the multiple groups of connecting rods (7), and sliding blocks (9) are fixedly installed on the multiple groups of clamping blocks (8), and multiple groups of second sliding grooves (10) are symmetrically opened in the upper and lower parts of the work frame (1), and multiple groups of sliding blocks (9) are slidably installed in the multiple groups of second sliding grooves (10).
3. A camshaft processing clamping device according to claim 2, characterized in that: The multiple groups of connecting rods (7) are all arranged in an inclined shape, and the inner wall diameters of the two groups of through holes (2) are smaller than the inner wall diameters of the two groups of sliding rings (5) and the two groups of connecting rings (6).
4. A camshaft processing clamping device according to claim 2, characterized in that: The inner walls of the plurality of groups of the second slide grooves (10) and the plurality of groups of sliding blocks (9) are all T-shaped, and the plurality of groups of sliding blocks (9) are adapted to the inner walls of the plurality of groups of the second slide grooves (10).
5. The camshaft processing clamping device according to claim 1, characterized in that: The limit assembly comprises a plurality of fixed blocks (11), the plurality of fixed blocks (11) are fixedly mounted on the clamping blocks (8), a clamping slot (12) is provided in each of the plurality of fixed blocks (11), a limit rod (13) is installed between the plurality of fixed blocks (11), an insert block (14) is fixedly mounted at both upper and lower ends of each of the plurality of limit rods (13), two sets of movable grooves (15) are provided in each of the plurality of insert blocks (14), a spring (16) is installed in each of the plurality of movable grooves (15), and a limit block (17) is movably installed at the opening of each of the plurality of movable grooves (15).
6. A camshaft processing clamping device according to claim 5, characterized in that: The upper and lower opposite sides of the plurality of groups of limit blocks (17) are all inclined, and the inclined surfaces of the plurality of groups of limit blocks (17) face the fixed block (11).