A miniature parts clamping suction cup

Abstract

This utility model provides a micro-part clamping suction cup, including a quick-change fixture and a base. The base integrates an adjustable vertical reference angle positioning block, an adjustable top block, and a positioning and clamping frame. A positioning pin hole is provided on the top of the base, and a positioning pin is fitted into the hole. A processing area is provided on the top surface of the base, and a micro-grid-like air channel is provided within the processing area. An internal vacuum channel communicating with the micro-grid-like air channel is provided inside the base. The adjustable top block is used to press against the workpiece horizontally to prevent workpiece movement. The adjustable vertical reference angle positioning block is used to position the reference angle of the workpiece and adapt to the positioning requirements of workpieces of different heights. A screw is threaded onto the positioning and clamping frame, and the screw is used to press the workpiece vertically through the clamping frame. The internal vacuum channel is used to connect to a vacuum source, using negative pressure to adsorb the workpiece and prevent it from falling off during processing.

Description

Technical Field

[0001] This utility model relates to the field of clamping fixtures, and in particular to a suction cup for clamping miniature parts. Background Technology

[0002] In the field of machining, parts fixtures are key tools to ensure machining accuracy and production efficiency. With the continuous development of the manufacturing industry, the requirements for the accuracy, efficiency and quality of parts machining are getting higher and higher, especially in industries such as aerospace, electronics and medical devices, where the demand for machining micro parts is growing.

[0003] Traditional parts clamping fixtures mainly include mechanical clamps and hydraulic clamps. Mechanical clamps typically use bolts, nuts, and pressure plates to clamp parts. These fixtures are simple in structure and low in cost, but the clamping process is cumbersome, requiring a significant amount of time for adjustment and tightening. Furthermore, they struggle to achieve precise positioning and clamping for complex-shaped, small-sized micro-parts. Hydraulic clamps, on the other hand, utilize the pressure generated by a hydraulic system to clamp parts. They offer advantages such as high clamping force and rapid action, but hydraulic systems are complex in structure, expensive, and pose a risk of leakage. Maintenance and upkeep are also more difficult.

[0004] In addition, when dealing with thin-walled micro parts, traditional fixtures are prone to deformation due to uneven clamping force distribution, which affects machining accuracy. At the same time, for some parts that require multi-face machining, traditional fixtures often need to be clamped multiple times, which not only increases clamping time but also easily introduces clamping errors, reducing machining accuracy and production efficiency.

[0005] With the widespread application of micro parts in various fields, the requirements for micro part clamping fixtures are also increasing. Existing clamping technologies have certain limitations in terms of positioning accuracy, clamping efficiency, adaptability, and prevention of part deformation, and cannot meet the needs of modern manufacturing for high-precision and high-efficiency processing of micro parts. Therefore, developing a new type of micro part clamping chuck is of great practical significance. Utility Model Content

[0006] To address the limitations of existing clamping technologies in terms of positioning accuracy, clamping efficiency, adaptability, and prevention of part deformation, this utility model provides a micro-part clamping suction cup.

[0007] The present invention provides a micro-part clamping suction cup using the following technical solution:

[0008] A micro-part clamping suction cup includes a quick-change fixture and a base. The base integrates an adjustable vertical reference angle positioning block, an adjustable top block, and a positioning and clamping frame. A positioning pin hole is provided on the top of the base, and a positioning pin is fitted into the hole. A processing area is provided on the top surface of the base, and a micro-grid-like air channel is provided within the processing area. An internal vacuum channel communicating with the micro-grid-like air channel is provided inside the base. The adjustable top block is used to press against the workpiece horizontally to prevent workpiece movement. The adjustable vertical reference angle positioning block is used to position the reference angle of the workpiece and adapt to the positioning requirements of workpieces of different heights. A screw is threaded onto the positioning and clamping frame, and the screw is used to press the workpiece vertically through the clamping frame. The internal vacuum channel is used to connect to a vacuum source, using negative pressure to adsorb the workpiece and prevent it from falling off during processing.

[0009] Furthermore, the adjustable top block includes a top block body and a second adjustment groove; a clamping groove is provided on the top of the base corresponding to the processing area, and the top block body is slidably disposed in the clamping groove; a second adjustment groove is provided inside the top block body; the second adjustment groove is keyed; a threaded hole is provided at the bottom of the clamping groove corresponding to the position of the second adjustment groove, and a bolt is provided in the second adjustment groove for engaging with the threaded hole to fix the top block body; after loosening the bolt, the top block body can be driven to move in a direction closer to or further away from the workpiece to achieve horizontal clamping of the workpiece;

[0010] Furthermore, the adjustable reference angle positioning block includes a reference angle body and a first adjustment groove; the reference angle body is slidably connected to the outer side wall of the base, and a plurality of first adjustment grooves are provided inside the reference angle body; the first adjustment grooves are key-shaped and parallel to each other; the outer side wall of the base is provided with threaded holes corresponding to the positions of the first adjustment grooves, and bolts are provided in the first adjustment grooves for cooperating with the threaded holes to fix the reference angle body.

[0011] Furthermore, the depth of the micro-grid air channel is 0.1-0.5mm, the width is 0.2-0.6mm, and the grid side length is 1-5mm; the size design of the micro-grid air channel can effectively avoid deformation or detachment of thin-walled micro workpieces due to negative pressure adsorption during processing.

[0012] Furthermore, the positioning and clamping frame is a rectangular frame structure, and the clamping screws are threaded to the four corners of the rectangular frame; an avoidance opening is provided in the middle of the rectangular frame, and the shape of the avoidance opening is adapted to the processing area of ​​the workpiece to avoid the frame from blocking the processing path.

[0013] Furthermore, the built-in vacuum channel includes a main air channel and branch air channels; the main air channel is opened inside the base along its length direction, and the branch air channels are opened inside the base along its width direction and are perpendicularly connected to the main air channel; the top end of the branch air channel is connected to the micro-grid air channel groove, and one end of the main air channel is provided with a vacuum interface for connecting to an external vacuum source.

[0014] In summary, the beneficial effects of this utility model are as follows:

[0015] This invention utilizes a quick-change fixture design, making changes to the clamping configuration much faster. The cooperation of the locating pin and locating pin hole enables rapid and accurate installation and positioning of the base, significantly reducing clamping time. Simultaneously, the adjustable upper and lower reference angle locating blocks and the adjustable top block allow for quick adjustment of the workpiece's position and angle, further improving clamping efficiency. The adjustable upper and lower reference angle locating blocks accurately determine the workpiece's reference angle and can be adjusted according to the workpiece's height. The adjustable top block accurately abuts the workpiece horizontally, ensuring the workpiece's positioning accuracy on the horizontal plane. Furthermore, the cooperation of the locating pin hole and locating pin improves the installation and positioning accuracy of the base with other components or machine tools, thereby improving the overall workpiece clamping and positioning accuracy. The adjustable upper and lower reference angle locating blocks and the adjustable top block are adjustable to accommodate workpieces of different shapes and sizes. The design of the micro-grid air channel grooves and the cooperation of the positioning and clamping frame and screws also allow for flexible adjustments based on the workpiece's characteristics, enhancing the versatility of the clamping suction cup. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the overall structure of this utility model without the positioning and clamping frame;

[0018] Figure 3 This is a schematic diagram showing the position of the quick-change clamp of this utility model;

[0019] Figure 4 This is a schematic diagram of the internal structure of the base of this utility model.

[0020] As shown in the figure: 1-Quick change fixture, 2-Base, 3-Reference angle body, 31-First adjustment groove, 4-Clamping groove, 41-Top block body, 42-Second adjustment groove, 5-Machining area, 6-Positioning pin hole, 61-Fixing hole, 8-Positioning clamping frame, 81-Threaded hole, 9-Main air passage, 91-Branch air passage. Detailed Implementation

[0021] The following is in conjunction with the appendix Figure 1-4 The present invention will be further described in detail below:

[0022] This utility model discloses a suction cup for clamping miniature parts, such as... Figure 1-4 As shown, a micro-part clamping suction cup includes a quick-change clamp 1 and a base 2. The base 2 integrates an adjustable vertical reference angle positioning block, an adjustable top block, and a positioning and clamping frame 8. A positioning pin hole 6 is provided on the top of the base 2, and a positioning pin is fitted inside the hole 6. A processing area 5 is provided on the top surface of the base 2, and a micro-grid-like air channel groove is provided within the processing area 5. An internal vacuum channel communicating with the micro-grid-like air channel groove is provided inside the base 2. The adjustable top block is used to press against the workpiece horizontally to prevent workpiece movement. The adjustable vertical reference angle positioning block is used to position the reference angle of the workpiece and adapt to the positioning requirements of workpieces of different heights. A screw is threaded onto the positioning and clamping frame 8, and the screw is used to press the workpiece vertically through the clamping frame 8. The internal vacuum channel is used to connect to a vacuum source, using negative pressure to adsorb the workpiece and prevent it from falling off during processing. In this embodiment, the base 2 is first installed in a suitable position; then... The workpiece is placed in processing area 5, and the reference angle of the workpiece is determined by the adjustable reference angle positioning block. The height of the block is adjusted to suit the height of the workpiece. Then, the adjustable top block is moved horizontally to press against the workpiece, initially fixing its horizontal position. After that, the workpiece is pressed vertically by the positioning and clamping frame 8 using screws. Finally, the built-in vacuum channel is connected to the vacuum source, and the vacuum system is turned on, so that the workpiece is adsorbed by negative pressure in processing area 5. This multi-mode clamping method greatly improves the stability and accuracy of workpiece clamping. The quick-change fixture 1 makes changing the clamping configuration faster and improves production efficiency. The adjustable reference angle positioning block and the adjustable top block can adapt to workpieces of different shapes and sizes, enhancing the versatility of the clamping suction cup. The dual effect of the vertical clamping of the positioning and clamping frame 8 and the screws, as well as the vacuum adsorption, effectively prevents the workpiece from moving and falling off during processing, ensuring processing quality.

[0023] like Figure 1-4As shown, the adjustable top block includes a top block body 41 and a second adjustment groove 42; a clamping groove 4 is provided on the top of the base 2 corresponding to the position of the processing area 5, and the top block body 41 is slidably disposed in the clamping groove 4; a second adjustment groove 42 is provided inside the top block body 41; the second adjustment groove 42 is keyed; a threaded hole is provided at the bottom of the clamping groove 4 corresponding to the position of the second adjustment groove 42, and a bolt is provided in the second adjustment groove 42 for engaging with the threaded hole to fix the top block body 41; after loosening the bolt, the top block body 41 can be driven to move in a direction closer to or further away from the workpiece to achieve horizontal clamping of the workpiece; in this embodiment, when it is necessary to adjust the position of the top block body 41, first use a tool Loosen the bolts in the second adjusting groove 42; at this time, the constraint of the top block body 41 in the clamping groove 4 is released, and the top block body 41 can be driven by hand or other tools to move in the direction closer to or away from the workpiece; when the top block body 41 moves to a suitable position and can press against the workpiece, tighten the bolts with tools to fix the top block body 41 in that position, thereby achieving horizontal pressing against the workpiece; this adjustable top block design allows for flexible adjustment of the top block position when clamping workpieces of different sizes, improving the adaptability of clamping; the cooperation between the key-shaped second adjusting groove 42 and the clamping groove 4 ensures the linearity and stability of the movement of the top block body 41, improving the accuracy of positioning. At the same time, the bolt fixing method is simple and reliable, and easy to operate and adjust;

[0024] like Figure 1-4 As shown, the adjustable reference angle positioning block includes a reference angle body 3 and a first adjustment groove 31. The reference angle body 3 is slidably connected to the outer wall of the base 2, and a plurality of first adjustment grooves 31 are provided inside the reference angle body 3. The first adjustment grooves 31 are key-shaped and parallel to each other. The outer wall of the base 2 has threaded holes corresponding to the positions of the first adjustment grooves 31, and bolts are provided in the first adjustment grooves 31 for cooperating with the threaded holes to fix the reference angle body 3. In this embodiment, when it is necessary to adjust the height of the reference angle body 3, the bolts in the first adjustment grooves 31 are first loosened with a tool. Then, according to the height requirements of the workpiece, the reference angle body 3 is manually moved up and down along the outer wall of the base 2 to a suitable position. After determining the position, the bolts are tightened with a tool to fix the reference angle body 3 at that height, thereby achieving the positioning of the reference angle of the workpiece. The design of the adjustable reference angle positioning block allows the clamping suction cup to adapt to workpieces of different heights, improving its versatility. The setting of multiple first adjustment grooves 31 provides more adjustment options and can more accurately position the reference angle of the workpiece. This structure is simple and easy to operate, and can quickly and accurately complete the adjustment of the reference angle.

[0025] like Figure 1-4As shown, the depth of the micro-grid air channel is 0.1-0.5 mm, the width is 0.2-0.6 mm, and the grid side length is 1-5 mm. The size design of the micro-grid air channel effectively avoids deformation or detachment of thin-walled micro workpieces due to negative pressure adsorption during processing. In this embodiment, when the built-in vacuum channel is connected to the vacuum source, air is extracted through the micro-grid air channel, forming a negative pressure in the processing area 5. Due to the reasonable size design of the micro-grid air channel, air can be extracted relatively evenly from each grid, resulting in a more uniform negative pressure on the workpiece surface. This size design effectively avoids deformation and detachment of thin-walled micro workpieces due to negative pressure adsorption during processing. The uniform negative pressure distribution makes the force on the workpiece more balanced, reducing deformation caused by excessive local force. At the same time, the appropriate size also ensures sufficient adsorption force, ensuring the stability of the workpiece during processing.

[0026] like Figure 1-4 As shown, the positioning and clamping frame 8 is a rectangular frame structure, with clamping screws threaded to each of the four corners. An clearance opening is provided in the middle of the rectangular frame, the shape of which is adapted to the processing area of ​​the workpiece to prevent the frame from obstructing the processing path. In this embodiment, the positioning and clamping frame 8 is placed above the workpiece, with the clearance opening aligned with the workpiece's processing area. Then, a tool is used to rotate the clamping screws at the four corners, causing the screws to gradually move downwards, driving the positioning and clamping frame 8 downwards until the workpiece is clamped. During processing, the positioning and clamping frame 8 continuously applies vertical pressure to the workpiece, maintaining its stability. The rectangular frame structure and the design of the clamping screws at the four corners can evenly apply pressure to the workpiece, ensuring its vertical stability. The clearance opening prevents the frame from interfering with the processing, improving the feasibility and efficiency of processing. This structure is simple and practical, effectively achieving vertical clamping of the workpiece.

[0027] like Figure 1-4As shown, the built-in vacuum duct includes a main air duct 9 and branch air ducts 91. The main air duct 9 is opened inside the base 2 along its length, and the branch air ducts 91 are opened inside the base 2 along its width and are perpendicularly connected to the main air duct 9. The top of the branch air duct 91 is connected to a micro-grid air duct groove, and one end of the main air duct 9 is provided with a vacuum interface for connecting to an external vacuum source. In this embodiment, when the vacuum interface is connected to the vacuum source, the suction force generated by the vacuum source causes air to enter the branch air duct 91 from the micro-grid air duct groove, then flow into the main air duct 9 through the branch air duct 91, and finally exit from the vacuum interface. During this process, due to the reasonable layout of the main air duct 9 and the branch air duct 91, the airflow can flow relatively smoothly, forming a uniform negative pressure environment in the processing area 5. The structural design of the main air duct 9 and the branch air duct 91 improves the uniformity of airflow distribution, allowing the workpiece to be uniformly adsorbed by negative pressure, thus enhancing the adsorption effect. This structure can also reduce airflow resistance, improve the efficiency of the vacuum system, and reduce energy consumption. At the same time, the graded air duct structure facilitates maintenance and cleaning.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. The various components mentioned in this utility model are common technologies in the existing field. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A micro-part clamping chuck comprising a quick-change clamp (1), a base (2), characterized in that: The base (2) is integrated with an adjustable reference angle positioning block, an adjustable top block, and a positioning and clamping frame (8); the top of the base (2) is provided with a positioning pin hole (6), and a positioning pin is installed in the positioning pin hole (6); the top surface of the base (2) is provided with a processing area (5), and a micro-grid air channel is provided in the processing area (5); the interior of the base (2) is provided with a built-in vacuum channel that communicates with the micro-grid air channel; the adjustable top block is used to press against the workpiece in the horizontal direction to prevent the workpiece from moving; the adjustable reference angle positioning block is used to position the reference angle of the workpiece and adapt to the positioning requirements of workpieces of different heights; the positioning and clamping frame (8) is threaded with a screw, which is used to press the workpiece in the vertical direction through the clamping frame (8); the built-in vacuum channel is used to connect to a vacuum source and use negative pressure to adsorb the workpiece to prevent it from falling off during processing.

2. A micro-part clamping chuck as claimed in claim 1, wherein: The adjustable top block includes a top block body (41) and a second adjustment groove (42); a clamping groove (4) is provided on the top of the base (2) corresponding to the processing area (5), and the top block body (41) is slidably disposed in the clamping groove (4); a second adjustment groove (42) is provided inside the top block body (41); the second adjustment groove (42) is a circular key type; a threaded hole is provided at the bottom of the clamping groove (4) corresponding to the position of the second adjustment groove (42), and a bolt is provided in the second adjustment groove (42) for cooperating with the threaded hole to fix the top block body (41); after loosening the bolt, the top block body (41) can be driven to move in the direction closer to or farther from the workpiece to achieve horizontal clamping of the workpiece.

3. A micro-part holding chuck according to claim 1, wherein: The adjustable reference angle positioning block includes a reference angle body (3) and a first adjustment groove (31); the reference angle body (3) is slidably connected to the outer side wall of the base (2), and a plurality of first adjustment grooves (31) are provided inside the reference angle body (3); the first adjustment grooves (31) are key-shaped and parallel to each other; the outer side wall of the base (2) is provided with threaded holes corresponding to the positions of the first adjustment grooves (31), and bolts are provided in the first adjustment grooves (31) for cooperating with the threaded holes to fix the reference angle body (3).

4. The micro-part holding chuck according to claim 1, wherein: The depth of the micro-grid air channel is 0.1-0.5mm, the width is 0.2-0.6mm, and the grid side length is 1-5mm. The size design of the micro-grid air channel can effectively avoid deformation or detachment of thin-walled micro workpieces due to negative pressure adsorption during processing.

5. The micro-part holding chuck according to claim 1, wherein: The positioning and clamping frame (8) is a rectangular frame structure, and clamping screws are threaded to the four corners of the rectangular frame; an avoidance opening is provided in the middle of the rectangular frame, and the shape of the avoidance opening is adapted to the processing area of ​​the workpiece to avoid the frame from blocking the processing path.

6. A micro-part holding chuck according to claim 1, wherein: The built-in vacuum channel includes a main air channel (9) and a branch air channel (91); the main air channel (9) is opened inside the base (2) along its length direction, and the branch air channel (91) is opened inside the base (2) along its width direction and is perpendicularly connected to the main air channel (9); the top end of the branch air channel (91) is connected to the micro-grid air channel groove, and one end of the main air channel (9) is provided with a vacuum interface for connecting to an external vacuum source.

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