Composite universal clamping device

Abstract

The invention relates to a composite universal clamping device which comprises a leaning positioning plate and a movable clamp, the movable clamp comprises a rail, a groove is formed in the top face of the rail, a rack is horizontally arranged in the groove, and a wedge block clamping part is arranged above the rail in a sliding mode; the wedge block clamping part comprises a lower inclined wedge pressing block, the lower inclined wedge pressing block is arranged above the rail in a sliding mode, a small rack is arranged in a sliding groove in the bottom of the lower inclined wedge pressing block in a sliding mode and can be meshed with a rack above the rail, and a rack positioning screw is arranged in the position, corresponding to the top of the small rack, of the lower inclined wedge pressing block in a penetrating mode; the inclined face of the lower inclined wedge pressing block is connected with an upper inclined wedge pressing block through an adjusting screw. According to the clamping device, the leaning fixing plate is matched with the movable clamp, so that the clamping distance can be flexibly adjusted, the clamping device is suitable for clamping structural parts of different types and different specifications, the simple structural design is adopted, the clamping efficiency is high, the applicability is high, the machining efficiency can be remarkably improved, and the machining cost can be remarkably reduced.

Description

Technical Field

[0001] The invention relates to the technical field of numerical control machining, and in particular to a composite universal clamping device. Background Art

[0002] With the complex and diverse changes in market demand, there is an increasing demand for small-batch, multi-category, and multi-specification parts. For example, 3C electronics, medical, and aviation parts all have the characteristics of small batches and many varieties. Even the same family of parts have different requirements for shape curvature, size, and dimensions. Common parts on airplanes include slide rail parts. Faced with such a market environment, processing companies are bound to face the problem of reducing costs and increasing efficiency. However, improving the adaptability and processing efficiency of the processing center is the key to reducing processing costs, which has become the focus of research for processing companies.

[0003] Taking clamping tools as an example, currently most machining centers use a set of clamping tools for a single processing of one type or category of parts. The versatility of clamping tools is low. Processing parts of different categories or specifications requires corresponding clamping tools, which is bound to increase tooling costs. Moreover, clamping tools need to be replaced frequently when processing different parts, resulting in low clamping efficiency and affecting the overall processing benefits.

[0004] Therefore, it is urgent to develop a set of clamping tools that can adapt to the processing of multiple categories and specifications of parts to meet the market's needs for diversified product processing, improve processing efficiency and reduce processing costs. Summary of the invention

[0005] The invention provides a composite universal clamping device.

[0006] The specific technical scheme of the present invention is: a composite universal clamping device, including a positioning plate and a movable clamp, the movable clamp including a track, the top surface of the track is provided with a groove, a rack is horizontally provided in the groove, a wedge block clamping part is slidably provided above the track; the wedge block clamping part includes a lower inclined wedge pressure block, the lower inclined wedge pressure block is slidably arranged above the track, a small rack is slidably provided in the bottom slide groove of the lower inclined wedge pressure block, the small rack can mesh with the rack above the track, a rack positioning screw is penetrated in the lower inclined wedge pressure block corresponding to the top of the small rack, and the inclined surface of the lower inclined wedge pressure block is connected to the upper inclined wedge pressure block by an adjusting screw.

[0007] Furthermore, a spring is sleeved on the outer surface of the adjusting screw.

[0008] Furthermore, the opposing surfaces of the positioning plate and the upper inclined wedge pressing block acting on the workpiece are flexible sawtooth-shaped.

[0009] Furthermore, both ends of the rack are connected to the bottom plate of the track by screws.

[0010] Furthermore, a plurality of screws are passed through the mounting positioning plate and the track bottom plate for connecting the workbench.

[0011] Furthermore, a positioning groove is transversely opened at the bottom of the track, and a track positioning key is installed in the positioning groove.

[0012] Furthermore, it also includes a plurality of equal-height columns for supporting the workpiece.

[0013] Furthermore, the equal-height columns are symmetrically arranged on both sides of the track.

[0014] The present invention provides a composite universal clamping device, which at least comprises a positioning plate and a movable clamp as described in the above clamping device.

[0015] Furthermore, it comprises a mounting and positioning plate and two movable clamps, and the two movable clamps are arranged on the same side or both sides of the mounting and positioning plate; when arranged on both sides, both side surfaces of the mounting and positioning plate are flexible sawtooth shapes.

[0016] The beneficial effects of the present invention are as follows: the clamping device can flexibly adjust the clamping spacing through the cooperation of the mounting fixing plate and the movable clamp, and is suitable for the clamping of structural parts of different categories and specifications. Its simple and convenient structural design can easily realize the movement and fixation of the wedge clamping part through the combination of the track and the rack, and the clamping and loosening of the workpiece can be quickly achieved by adjusting the rack positioning screw and the adjusting screw. It not only has high clamping efficiency and strong applicability, but also can achieve the effect of clamping multiple pieces at a time by changing the number and combination of the mounting fixing plate and the movable clamp, which is conducive to batch clamping production, has obvious advantages for complex and diverse processing needs, can significantly improve processing efficiency, and reduce processing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the structure of a composite universal clamping device in Example 1 Figure 1 ; Figure 2 A schematic diagram of the structure of a composite universal clamping device in Example 1 Figure 2 ; Figure 3 A schematic diagram of the structure of a composite universal clamping device in Example 1 Figure 3 ; Figure 4 It is a structural schematic diagram of the mobile clamp in Example 1; Figure 5 is a top view of the mobile fixture; Figure 6 AA section view of the mobile fixture; Figure 7 is a schematic diagram of the track structure; Figure 8A top view of the track; Fig. 9 It is a structural schematic diagram of the track positioning key; Fig.10 is a top view of the rack; Fig.11 AA section view of the rack; Fig.12 It is a schematic diagram of the exploded structure of the wedge clamping part; Fig.13 This is a schematic diagram of the working state structure of Example 1; Fig.14 The working state structure of Example 2 is shown in FIG. Figure 1 ; Fig.15 The working state structure of Example 2 is shown in FIG. Figure 2 ; Fig.16 This is a schematic diagram of the working state structure of Example 3; In the figure: 1-mounted positioning plate; 2-movable fixture; 3-track, 31-groove, 32-positioning groove, 33-track positioning key; 4-rack; 5-wedge clamping part, 51-lower inclined wedge pressure block, 52-upper inclined wedge pressure block, 53-small rack, 54-rack positioning screw, 55-adjusting screw, 56-spring; 6-equal height column; 7-workpiece; 8-workbench. DETAILED DESCRIPTION

[0018] In order to make the technical problems and technical solutions solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. Example 1

[0019] like Figures 1 to 3 As shown, this embodiment provides a composite universal clamping device, including a positioning plate 1 and a movable clamp 2. Figures 4 to 8 As shown, the mobile clamp 2 includes a track 3, a groove 31 is opened on the top surface of the track 3, a rack 4 is horizontally arranged in the groove 31, a wedge clamping part 5 is slidably arranged above the track 3, and the wedge clamping part 5 can slide along the track 3 to approach or move away from the positioning plate 1, thereby achieving the clamping of workpieces 7 of different categories and specifications.

[0020] like Figure 6 Fig.11As shown, the wedge block clamping portion 5 includes a lower inclined wedge pressure block 51, which is slidably arranged above the track 3. A small rack 53 is slidably arranged in the bottom slide groove of the lower inclined wedge pressure block 51, and the small rack 53 can mesh with the rack 4 above the track 3. A rack positioning screw 54 is penetrated through the lower inclined wedge pressure block 51 corresponding to the top of the small rack 53. When the rack positioning screw 54 is tightened, the rack positioning screw 54 will press the small rack 53 to move downward and mesh with the rack 4, thereby completing the fixation of the lower inclined wedge pressure block 51; an upper inclined wedge pressure block 52 is connected to the inclined surface of the lower inclined wedge pressure block 51 through an adjusting screw 55. After the lower inclined wedge pressure block 51 is fixed, the adjusting screw 55 is tightened, and the downward movement of the adjusting screw 55 will drive the upper inclined wedge pressure block 52 to slide downward along the inclined surface of the lower inclined wedge pressure block 51, thereby clamping the workpiece 7.

[0021] Preferably, a spring 56 is sleeved on the outer surface of the adjusting screw 55, and a gasket is provided between the adjusting screw 55 and the top surface of the upper inclined wedge pressing block 52, which is conducive to limiting the position of the spring 56. The provision of the spring 56 is conducive to the reset of the upper inclined wedge pressing block 52. When the clamping is switched from the clamping state to the loosening state, the adjusting screw 55 is turned in the opposite direction. Under the reset force of the spring 56, the upper inclined wedge pressing block 52 is driven to slide upward along the inclined surface while being loosened, and the clamping of the workpiece 7 is released, and finally reset. The way in which the spring drives the upper inclined wedge block to automatically rebound and reset replaces the cumbersome manual upward pulling, which can further improve the convenience of clamping.

[0022] Preferably, the relative surfaces of the positioning plate 1 and the upper inclined wedge pressure block 52 acting on the workpiece are flexible serrated. Such flexible serrated pressing surfaces can match the surface curvature of slide rail parts, so that the clamping device can better fit the workpiece surface, thereby providing a more uniform clamping force, improving the clamping stability, and reducing deformation of the workpiece due to uneven force.

[0023] Preferably, a positioning groove 32 is transversely opened at the bottom of the track 3 , and a track positioning key 33 is installed in the positioning groove 32 to improve the installation stability of the track 3 .

[0024] Preferably, the clamping device further comprises a plurality of equal-height columns 6 for supporting the workpiece. The specific equal-height columns 6 can be reasonably configured in number and position according to the workpiece support needs, with the principle of stable workpiece support. Of course, the setting position of the equal-height columns 5 can also be as follows: Figure 1 As shown, the two sides of the track 3 are symmetrically arranged, or as Figure 2 As shown, it is arranged between the left and right movable clamps 2 .

[0025] The connection conditions of the above components are as follows: like Figure 1 Figure 8As shown, a plurality of screw holes are provided on the mounting positioning plate 1 and the bottom plate of the track 3. After screws are passed through the screw holes, it is convenient to connect and fix them on the workbench 8.

[0026] like Figure 3 Figure 8 Fig. 9 As shown, a screw hole is provided at the center of the bottom plate of the track 3, which can correspond to the screw hole at the center of the track positioning key 33. The two parts can be connected together by passing the screws. In addition, there are two small screw holes on the track positioning key 33, which can be further secured in the positioning groove 32 of the track 3 by passing the screws.

[0027] like Figure 8 Fig.10 Fig.11 As shown, screw holes are provided at both ends of the bottom plate of the track 3, which can correspond to the screw holes at both ends of the rack 4, and the two parts can be connected together by passing the screws.

[0028] like Figures 1 to 3 As shown, a screw for connecting the workbench 8 passes through the center of the equal-height column.

[0029] like Fig.12 As shown, screw holes are provided on the top and side surfaces of the lower inclined wedge pressure block 51, and the bottom is an L-shaped slide groove opening. The small rack 53 is slid downward in the L-shaped slide groove, and the rack positioning screw 54 is screwed into the screw hole on the top surface; the top surface of the upper inclined wedge pressure block 52 may also be provided with screw holes, and the adjusting screw 55 is screwed into the screw hole on the top surface of the upper inclined wedge pressure block 52 and the screw hole on the top surface of the lower inclined wedge pressure block 51 in turn, thereby connecting the upper inclined wedge pressure block 52 to the inclined surface of the lower inclined wedge pressure block 51.

[0030] The clamping device provided in this embodiment includes a positioning plate 1 and a movable clamp 2 of the above structure, and its working state is as follows: Fig.13 As shown. When in use, the positioning plate 1 and the track 3 are installed on the workbench 8, and the upper equal height column 6 is reasonably installed on the workbench 8 according to the size of the workpiece 7, and then the assembled wedge clamping part 5 is slidably installed on the track 3. The workpiece 7 is placed between the positioning plate 1 and the wedge clamping part 5, and the wedge clamping part 5 is slid until the upper inclined wedge pressing block 52 is pressed against the workpiece 7, and the rack positioning screw 54 is tightened to press the small rack 53 downward to engage with the rack 4, and the lower inclined wedge pressing block 51 is fixed; then the adjusting screw 55 is tightened to drive the upper inclined wedge pressing block 52 to slide downward along the inclined surface of the lower inclined wedge pressing block 51, clamp the workpiece 7, and then the workpiece 7 can be processed.

[0031] After the processing of the workpiece 7 is completed, the adjusting screw 55 is loosened in the reverse direction. Under the restoring force of the spring 56, the upper inclined wedge pressure block 52 is driven to slide upward along the inclined surface while being loosened, thereby releasing the clamping of the workpiece 7 and finally resetting it; then the rack positioning screw 54 is loosened to release the top pressure of the rack positioning screw 54 on the small rack 53, and the meshing state of the small rack 53 and the rack 4 is released, and the wedge block clamping part 5 can slide along the track 3 in the direction away from the positioning plate 1, completely releasing the clamping of the workpiece 7, and the workpiece 7 can be removed.

[0032] The clamping device can flexibly adjust the clamping distance by cooperating with the fixed plate and the mobile clamp, and is suitable for clamping structural parts of different categories and specifications. Its simple and convenient structural design can easily realize the movement and fixation of the wedge clamping part through the combination of the track and the rack. The workpiece can be quickly clamped and loosened by adjusting the rack positioning screw and the adjusting screw. It has high clamping efficiency and strong applicability. Example 2

[0033] The difference between this embodiment and the above embodiment is that the clamping device provided in this embodiment includes a positioning plate 1 and two movable clamps 2 of the above structure. The specific configuration is as follows: like Fig.14 As shown, two movable clamps 2 are arranged on the same side of the positioning plate 1, and the two movable clamps 2 and the positioning plate 1 clamp a workpiece 7 at the same time. This design is suitable for clamping workpieces 7 of larger sizes.

[0034] like Fig.15 As shown, two movable clamps 2 are arranged on both sides of the positioning plate 1. The positioning plate 1 and the movable clamps 2 on both sides can clamp two workpieces 7 at the same time, which is beneficial to improving the processing efficiency. Example 3

[0035] The difference between this embodiment and the above embodiment is that the clamping device provided by this embodiment includes a positioning plate 1 and four movable clamps 2 of the above structure. Fig.16 As shown, four movable clamps 2 are symmetrically arranged in pairs on both sides of the positioning plate 1. The positioning plate 1 and the movable clamps 2 on both sides can clamp four workpieces 7 at the same time, further improving the processing efficiency.

[0036] It should also be noted that the number and combination of the positioning plate and the movable clamp of the clamping device are not limited to the scenarios described in the above embodiments. In actual use, they can be reasonably configured and combined according to processing needs, workbench size, etc., to achieve one-time clamping of multiple pieces for processing and improve processing efficiency.

[0037] The present invention is described in detail above through specific and preferred embodiments, but those skilled in the art should understand that the present invention is not limited to the embodiments described above, and any modifications, equivalent substitutions, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A composite universal clamping device, characterized in that: The invention comprises a positioning plate (1) and a movable fixture (2), wherein the movable fixture (2) comprises a track (3), a groove (31) is provided on the top surface of the track (3), a rack (4) is horizontally provided in the groove (31), a wedge clamping portion (5) is slidably provided above the track (3), the wedge clamping portion (5) comprises a lower inclined wedge pressing block (51), the lower inclined wedge pressing block (51) is slidably provided above the track (3), a small rack (53) is slidably provided in a bottom slide groove of the lower inclined wedge pressing block (51), the small rack (53) can mesh with the rack (4) above the track (3), a rack positioning screw (54) is provided through the lower inclined wedge pressing block (51) corresponding to the top of the small rack (53), and an upper inclined wedge pressing block (52) is connected to the inclined surface of the lower inclined wedge pressing block (51) via an adjusting screw (55).

2. A composite universal clamping device according to claim 1, characterized in that: The outer surface of the adjusting screw (55) is sleeved with a spring (56).

3. A composite universal clamping device according to claim 1 or 2, characterized in that: The opposing surfaces of the positioning plate (1) and the upper inclined wedge pressing block (52) acting on the workpiece are flexible sawtooth-shaped.

4. A composite universal clamping device according to claim 3, characterized in that: Both ends of the rack (4) are connected to the bottom plate of the track (3) via screws.

5. A composite universal clamping device according to claim 4, characterized in that: The mounting positioning plate (1) and the bottom plate of the track (3) are both penetrated by a plurality of screws for connecting the workbench.

6. A composite universal clamping device according to claim 5, characterized in that: A positioning groove (32) is transversely provided at the bottom of the track (3), and a track positioning key (33) is installed in the positioning groove (32).

7. A composite universal clamping device according to any one of claims 4 to 6, characterized in that: It also includes a plurality of equal-height columns (6) for supporting the workpiece.

8. A composite universal clamping device according to claim 7, characterized in that: The equal-height columns (6) are symmetrically arranged on both sides of the track (3).

9. A composite universal clamping device, characterized in that: The invention comprises at least a positioning plate (1) and a movable fixture (2) as described in any one of claims 1 to 8.

10. A composite universal clamping device according to claim 9, characterized in that: It comprises a mounting and positioning plate (1) and two movable clamps (2), wherein the two movable clamps (2) are arranged on the same side or on both sides of the mounting and positioning plate (1); when arranged on both sides, both side surfaces of the mounting and positioning plate (1) are flexible sawtooth-shaped.

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