Zero point positioning tool

Abstract

The invention relates to a zero-point positioning tool, and belongs to the technical field of cooling fin machining, the zero-point positioning tool comprises a mounting table, an adsorption table and a tool plate, the adsorption table is arranged on the mounting table, a vacuum cavity is formed in the adsorption table, a vacuum connector used for connecting the vacuum cavity with an external gas circuit is arranged on the adsorption table, and the tool plate is arranged on the mounting table. The tool plate and the adsorption table are closed in a covering mode so that a sealed space can be formed in the vacuum cavity, and an adsorption hole set is formed in the tool plate and used for being connected with an external gas circuit to form negative pressure adsorption. The device has the effect that the cooling fin workpiece is convenient and fast to disassemble and assemble.

Description

Technical Field

[0001] The invention relates to the technical field of heat sink processing, and in particular to a zero-point positioning tool. Background Art

[0002] Heat sinks are parts used in electronic devices to dissipate heat from heat-generating electronic components. They are mostly in the shape of plates, sheets, or multiple sheets. The processing of heat sinks is mainly done through turning, grinding, and tooth cutting. During the processing, the heat sink needs to be fixed by tooling to facilitate the operation of the tool.

[0003] At present, the fixing tooling for heat sink processing is mainly fixed by bolt fixings, but the use of bolt fixings makes the disassembly and assembly of the heat sink inconvenient. Summary of the invention

[0004] In order to facilitate the disassembly and assembly of a heat sink workpiece, the present invention provides a zero-point positioning tool.

[0005] The zero-point positioning tool provided by the present invention adopts the following technical solution: A zero-point positioning tool comprises a mounting platform, an adsorption platform and a tooling plate, wherein the adsorption platform is arranged on the mounting platform, a vacuum chamber is provided in the adsorption platform, a vacuum joint for connecting the vacuum chamber with an external air circuit is provided on the adsorption platform, the tooling plate covers the adsorption platform to form a sealed space for the vacuum chamber, an adsorption hole group is provided on the tooling plate, and the adsorption hole group is used to connect with an external air circuit to form negative pressure adsorption.

[0006] Preferably, a plurality of positioning posts are provided on the tooling plate, positioning slots are provided on the positioning posts, a zero-point positioning seat is provided in the adsorption platform, the zero-point positioning seat corresponds to the positioning posts one-to-one, a positioning hole is provided on the zero-point positioning seat and is plugged into and cooperates with the corresponding positioning post, a positioning ball is slidably provided in the positioning hole and is used to cooperate with the positioning slot, the sliding direction of the positioning ball is perpendicular to the depth direction of the positioning hole, and an adjusting member is provided in the positioning hole to adjust the positioning ball to slide toward or away from the positioning slot.

[0007] Preferably, the adjusting member includes a single-beveled positioning block slidably arranged in the positioning hole and a pushing spring arranged in the positioning hole, the sliding direction of the single-beveled positioning block is perpendicular to the depth direction of the positioning hole, the positioning ball is arranged on the inclined surface of the single-beveled positioning block, and the pushing spring is used to push the single-beveled positioning block to slide toward the direction close to the positioning column.

[0008] Preferably, the adsorption hole group includes a first adsorption group and a second adsorption group, the first adsorption group includes a plurality of first adsorption through holes opened on the tooling plate, the second adsorption group includes a plurality of second adsorption through holes opened on the tooling plate, a placement groove is opened on the tooling plate, and the second adsorption through holes are located in the placement groove.

[0009] Preferably, the first adsorption through hole is located outside the placement groove.

[0010] Preferably, the adsorption hole group is connected to the vacuum chamber.

[0011] Preferably, a plurality of adsorption platforms are provided on the mounting platform, and the tooling plates correspond one to one with the adsorption platforms.

[0012] Preferably, a sealing frame is provided on the adsorption platform, and the sealing frame is used to cooperate with the corresponding tooling plate to form a sealed space.

[0013] Preferably, a sliding rod is slidably arranged in the first adsorption through hole, and the sliding direction of the sliding rod is parallel to the depth direction of the first adsorption through hole. A first elastic member is arranged in the first adsorption through hole for driving the sliding rod to reset. When the first elastic member is in a natural state, the sliding rod extends out of the end of the first adsorption through hole away from the adsorption platform. A blocking block is slidably arranged on the sliding rod, and the sliding direction of the blocking block is perpendicular to the sliding direction of the sliding rod. A receiving groove for accommodating the blocking block is provided on the inner wall of the first adsorption through hole. A moving member is provided on the tooling plate for adjusting the sliding of the blocking block toward or away from the receiving groove. When the first elastic member is in a natural state, the blocking block is located above the receiving groove.

[0014] Preferably, the movable part includes an adjusting rod slidably arranged on the tooling plate, a first magnet arranged on the adjusting rod, a second magnet arranged on the blocking block and a return spring arranged on the sliding rod, the adjusting rod and the blocking block corresponding to each other one by one, the sliding direction of the adjusting rod is parallel to the sliding direction of the sliding rod, the adjusting rod extends into the accommodating groove, and a second elastic part for resetting the adjusting rod is arranged in the accommodating groove, when the first elastic part and the second elastic part are both in the natural state, the surface of the adjusting rod extending out of the tooling plate is flush with the surface of the corresponding sliding rod extending out of the tooling plate; when the upper surface of the adjusting rod is flush with the upper surface of the tooling plate, the first magnet is located in the accommodating groove, the first magnet is used to adsorb the second magnet on the blocking block, and the return spring is used to pull the blocking block to reset, the adsorption force between the first magnet and the second magnet is greater than the elastic force of the return spring, when the return spring is in the natural state, the blocking block is located in the corresponding first adsorption through hole, and when the first elastic part and the second elastic part are both in the natural state, the first magnet on the adjusting rod is flush with the second magnet on the blocking block.

[0015] In summary, the present invention includes the following beneficial technical effects: The tooling plate is covered on the adsorption table, and then the heat sink to be processed is placed on the tooling plate so that the heat sink workpiece covers the adsorption hole group on the tooling plate, and then negative pressure is formed in the vacuum chamber through an external air circuit, so that the tooling plate is fixed on the adsorption table by negative pressure adsorption, and the adsorption and fixation of the heat sink workpiece is achieved by negative pressure adsorption at the same time; when the processing is completed and the heat sink workpiece needs to be removed, the negative pressure in the vacuum chamber is unlocked through the external air circuit, so that the fixation of the heat sink workpiece and the tooling plate can be released, which helps to make the disassembly and assembly of the heat sink workpiece convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention.

[0017] Figure 2 It is a cross-sectional view of the overall structure of the adsorption platform in an embodiment of the present invention.

[0018] Figure 3 yes Figure 2 Enlarged view of part A.

[0019] Figure 4 It is a structural cross-sectional view of a tooling plate in an embodiment of the present invention.

[0020] Figure 5 yes Figure 4 Magnified view of part B.

[0021] Explanation of the accompanying drawings: 1. Mounting table; 2. Adsorption table; 3. Tooling plate; 4. Vacuum chamber; 5. Vacuum joint; 6. Positioning column; 7. Positioning groove; 8. Zero-point positioning seat; 9. Positioning hole; 10. Positioning ball; 11. Adjusting piece; 111. Single-bevel positioning block; 112. Push spring; 12. First adsorption through hole; 13. Second adsorption through hole; 14. Placement groove; 15. Sealing frame; 16. Sliding rod; 17. Blocking block; 18. Accommodating groove; 19. Adjusting rod; 20. First magnet; 21. Second magnet; 22. Reset spring; 23. Unlocking joint; 24. Groove; 25. First spring; 26. Second spring; 27. Mounting rod. DETAILED DESCRIPTION

[0022] The following combination Figure 1-Figure 5 The present invention is described in further detail.

[0023] The embodiment of the present invention discloses a zero-point positioning tool. Figure 1The zero-point positioning tooling includes a mounting table 1, an adsorption table 2 and a tooling plate 3. The mounting table 1 is used to be mounted on a processing machine body. The cross section of the mounting table 1 is rectangular. The adsorption table 2 is fixedly arranged on the mounting table 1. The cross section of the adsorption table 2 is rectangular. The length direction of the adsorption table 2 is perpendicular to the length direction of the mounting table 1. A vacuum chamber 4 is provided in the adsorption table 2. A vacuum joint 5 connected to the vacuum chamber 4 is provided on the adsorption table 2. The vacuum joint 5 is used to connect an external gas path to form a negative pressure in the vacuum chamber 4.

[0024] Reference Figure 1 The tooling plate 3 and the adsorption platform 2 are covered to form a sealed space in the vacuum chamber 4. An adsorption hole group is provided on the tooling plate 3, and the adsorption hole group is used to connect with an external air path to form negative pressure adsorption.

[0025] When in use, the tooling plate 3 is covered on the adsorption platform 2, and then the heat sink to be processed is placed on the tooling plate 3, so that the heat sink workpiece covers the adsorption hole group on the tooling plate 3, and then a negative pressure is formed in the vacuum chamber 4 through an external air circuit, so that the tooling plate 3 is fixed on the adsorption platform 2 by negative pressure adsorption, and the heat sink workpiece is adsorbed and fixed on the tooling plate 3 by negative pressure adsorption; when the processing is completed and the heat sink workpiece needs to be removed, the negative pressure in the vacuum chamber 4 is unlocked through the external air circuit, and then the fixation of the heat sink workpiece and the tooling plate 3 can be released, which helps to make the disassembly and assembly of the heat sink workpiece convenient and quick, and at the same time, it is convenient to directly transfer the tooling plate 3 to the subsequent process.

[0026] Reference Figure 1 There are multiple adsorption platforms 2 on the mounting platform 1, and the multiple adsorption platforms 2 are arranged at intervals along the length direction of the mounting platform 1, wherein the tooling plates 3 correspond to the adsorption platforms 2 one by one. The tooling plates 3 on the adsorption platforms 2 can be replaced as needed, so as to simultaneously process multiple heat sink workpieces of different shapes and sizes, and the application range is wide.

[0027] Reference Figure 1 In order to facilitate the use of negative pressure adsorption to adsorb and fix the heat sink workpiece, the adsorption hole group includes a first adsorption group and a second adsorption group. The first adsorption group includes a plurality of first adsorption through holes 12 opened on the tooling plate 3. In the embodiment of the present invention, two first adsorption through holes 12 of the first adsorption group are provided. The two first adsorption through holes 12 are located on the center line of the corresponding tooling plate 3, and the arrangement direction of the two first adsorption through holes 12 is parallel to the length direction of the corresponding tooling plate 3.

[0028] Reference Figure 1A placement groove 14 is provided on the tooling plate 3, and the shape of the placement groove 14 is set according to the shape of the heat sink workpiece. Specifically, there are two placement grooves 14, and the arrangement direction of the two placement grooves 14 is perpendicular to the length direction of the corresponding tooling plate 3. The second adsorption group includes a plurality of second adsorption through holes 13 provided on the tooling plate 3, and the plurality of second adsorption through holes 13 are located in the placement groove 14, and the first adsorption through hole 12 is located outside the placement groove 14, thereby forming two processing stations, and placing the heat sink workpiece of a specific shape into the placement groove 14 and fixing it with negative pressure through the second adsorption through hole 13; and for the rectangular plate-shaped heat sink workpiece, it is directly placed on the tooling plate 3 and covers the first adsorption through hole 12, and is adsorbed and fixed through the first adsorption through hole 12, so as to realize the fixation of heat sink workpieces of different types and shapes, and has a wide range of applications. In other embodiments, the number and shape of the placement slots 14 on the tooling plate 3 and the position of the first adsorption through hole 12 can be set as needed. For example, there is only one placement slot 14 on the tooling plate 3, the cross-section is rectangular, and the first adsorption through hole 12 is located in the placement slot 14; the multiple adsorption platforms 2 on the mounting platform 1 can cover different types of tooling plates 3 as needed, and have high flexibility in use.

[0029] Reference Figure 1 In order to save costs and facilitate external air circuit connection, the first adsorption through hole 12 and the second adsorption through hole 13 of the adsorption hole group both penetrate the corresponding tooling plate 3 and communicate with the vacuum chamber 4. In other embodiments, a separate cavity can be opened on the tooling plate 3 to connect with the external air circuit. Furthermore, an unlocking joint 23 connected to the vacuum chamber 4 is provided on the adsorption platform 2. The unlocking joint 23 is used to connect with the external air circuit to unlock the negative pressure in the vacuum chamber 4.

[0030] Reference Figure 2 and Figure 3 In order to facilitate the installation and positioning of the tooling plate 3, a plurality of positioning columns 6 are fixedly arranged on the bottom wall of the tooling plate 3. The plurality of positioning columns 6 are arranged at intervals along the length direction of the tooling plate 3, and the positioning columns 6 are respectively misaligned with the first adsorption through hole 12 and the second adsorption through hole 13. In the embodiment of the present invention, two positioning columns 6 are provided on the tooling plate 3; a positioning groove 7 is provided on the positioning column 6, and the positioning groove 7 is provided along the circumference of the corresponding positioning column 6.

[0031] Reference Figure 1 and Figure 3A zero-point positioning seat 8 is fixedly provided in the adsorption platform 2, and the zero-point positioning seat 8 corresponds to the positioning column 6 one by one. A positioning hole 9 is provided on the zero-point positioning seat 8 and is plugged into and matched with the corresponding positioning column 6. A plurality of grooves 24 are provided in the positioning hole 9, and the plurality of grooves 24 are provided at intervals along the circumference of the positioning hole 9. A positioning ball 10 for cooperating with the positioning groove 7 is slidably provided in the groove 24, and the sliding direction of the positioning ball 10 is perpendicular to the depth direction of the positioning hole 9. An adjusting member 11 is provided in the groove 24 for adjusting the positioning ball 10 to slide toward or away from the positioning groove 7.

[0032] Reference Figure 1 and Figure 3 In order to facilitate the adjustment of the positioning ball 10 to slide toward or away from the positioning groove 7, the adjusting member 11 includes a single beveled edge positioning block 111 and a pushing spring 112. The single beveled edge positioning block 111 corresponds to the groove 24 one by one. The single beveled edge positioning block 111 is slidably arranged in the groove 24. The sliding direction of the single beveled edge positioning block 111 is perpendicular to the depth direction of the positioning hole 9. The single beveled edge positioning block 111 is located on the side of the corresponding positioning ball 10 close to the bottom wall of the groove 24. The side of the single beveled edge positioning block 111 close to the corresponding positioning ball 10 is an inclined surface. The positioning ball 10 is fixed on the inclined surface of the corresponding single beveled edge positioning block 111. The pushing spring 112 corresponds to the single beveled edge positioning block 111 one by one. The pushing spring 112 is located in the corresponding groove 24. One end of the pushing spring 112 is fixed on the bottom wall of the corresponding groove 24, and the other end is fixed on the side of the corresponding single beveled edge positioning block 111 away from the positioning ball 10. The pushing spring 112 is used to push the single beveled edge positioning block 111 to slide in the direction close to the positioning column 6.

[0033] When the positioning column 6 moves into the corresponding positioning hole 9, the lower end of the positioning column 6 gradually abuts the positioning ball 10. As the positioning column 6 continues to move downward, the positioning column 6 and the positioning ball 10 slide relative to each other, abutting the positioning ball 10 and the corresponding single-bevel positioning block 111 slide in the direction away from the positioning column 6, compressing the push spring 112 until the bottom end of the positioning column 6 abuts against the bottom wall of the positioning hole 9. At this time, the tooling plate 3 is covered with the adsorption platform 2, and the positioning groove 7 moves to align with the positioning ball 10. Then the compressed push spring 112 pushes the single-bevel positioning block 111 and the positioning ball 10 close to the positioning groove 7, realizing the abutment and cooperation between the positioning ball 10 and the positioning groove 7, thereby realizing the preliminary fixation and zero-point positioning of the tooling plate 3.

[0034] Reference Figure 1 and Figure 2 In order to improve the sealing performance between the tooling plate 3 and the adsorption platform 2, a sealing frame 15 is fixedly provided on the top of the adsorption platform 2, and the sealing frame 15 is used to form a sealed space with the corresponding tooling plate 3. When the tooling plate 3 and the adsorption platform 2 are covered, the tooling plate 3 and the sealing frame 15 are closely abutted, thereby helping to ensure the sealing performance of the vacuum chamber 4.

[0035] Reference Figure 4 and Figure 5 A sliding groove (not marked in the figure) is provided on the inner wall of the first adsorption through hole 12, and a sliding rod 16 is slidably arranged in the sliding groove. The sliding direction of the sliding rod 16 is parallel to the depth direction of the first adsorption through hole 12. A guiding structure is arranged between the sliding rod 16 and the inner wall of the sliding groove. Specifically, the guiding structure can be a combination of a guide rail and a guide block, or a combination of a guide block and a guide groove, which is not limited here. A first elastic member for driving the sliding rod 16 to reset is arranged in the sliding groove. When the first elastic member is in a natural state, the sliding rod 16 extends out of the first adsorption through hole 12 away from the adsorption platform 2 (refer to Figure 2 ). Further, the first elastic member includes a first spring 25, the extension direction of the first spring 25 is parallel to the sliding direction of the sliding rod 16, one end of the first spring 25 is fixed to the bottom wall of the sliding rod 16, and the other end is fixed to the bottom wall of the sliding groove. When the first spring 25 is in a natural state, the sliding rod 16 extends out of the end corresponding to the first adsorption through hole 12 away from the adsorption platform 2.

[0036] Reference Figure 4 and Figure 5 , a guide rod (not marked in the figure) is fixed on the sliding rod 16, the length direction of the guide rod is perpendicular to the length direction of the sliding rod 16, the guide rod is located in the corresponding first adsorption through hole 12, a blocking block 17 is provided on the sliding sleeve of the guide rod, the blocking block 17 is used to block the corresponding first adsorption through hole 12, the sliding direction of the blocking block 17 is perpendicular to the sliding direction of the sliding rod 16, and a receiving groove 18 for accommodating the blocking block 17 is provided on the inner wall of the first adsorption through hole 12, the receiving groove 18 is located on the side of the blocking block 17 away from the corresponding sliding rod 16, when the first spring 25 is in a natural state, the blocking block 17 is located above the receiving groove 18; when the blocking block 17 is aligned with the receiving groove 18, the sliding rod 16 cannot slide downward under the restriction of its own guide structure, and the upper surface of the sliding rod 16 is flush with the upper surface of the tooling plate 3. A moving part for adjusting the sliding direction of the blocking block 17 toward or away from the receiving groove 18 is provided on the tooling plate 3.

[0037] Reference Figure 4 and Figure 5 In order to facilitate the adjustment of the blocking block 17 to slide toward or away from the receiving groove 18, the moving part includes an adjusting rod 19, a first magnet 20, a second magnet 21 and a return spring 22. The adjusting rod 19 corresponds to the blocking block 17 one by one. The adjusting rod 19 is located on the side of the corresponding blocking block 17 away from the sliding rod 16. The adjusting rod 19 is slidably arranged on the tooling plate 3 away from the adsorption platform 2 (refer to Figure 2), the sliding direction of the adjusting rod 19 is parallel to the sliding direction of the sliding rod 16, the adjusting rod 19 extends into the receiving groove 18 and is located on the side of the receiving groove 18 away from the corresponding sliding rod 16, and a guiding structure is provided between the adjusting rod 19 and the receiving groove 18. Specifically, the guiding structure can be the cooperation of a guide rail and a guide block, or the cooperation of a guide block and a guide groove, which is not limited here. A second elastic member for resetting the adjusting rod 19 is provided in the receiving groove 18. Further, the second elastic member includes a second spring 26, the extension direction of the second spring 26 is parallel to the sliding direction of the adjusting rod 19, one end of the second spring 26 is fixed to the bottom wall of the adjusting rod 19, and the other end is fixed to the inner wall of the receiving groove 18. When the first spring 25 and the second spring 26 are both in the natural state, the surface of the adjusting rod 19 extending out of the tooling plate 3 is flush with the surface of the sliding rod 16 extending out of the tooling plate 3.

[0038] Reference Figure 4 and Figure 5 The first magnet 20 is fixed on the side of the adjusting rod 19 close to the corresponding blocking block 17. When the upper surface of the adjusting rod 19 is flush with the upper surface of the tooling plate 3, the first magnet 20 is located in the receiving groove 18; when the second spring 26 is in a natural state, the first magnet 20 is located above the receiving groove 18; the second magnet 21 is fixed on the side of the blocking block 17 close to the corresponding adjusting rod 19. When the adjusting rod 19 extends out of the surface of the tooling plate 3 and the sliding rod 16 extends out of the surface of the tooling plate 3, the first magnet 20 is flush with the second magnet 21. The first magnet 20 is used to adsorb the blocking block. The second magnet 21 on 17, the sliding rod 16 is fixed with a mounting rod 27, the mounting rod 27 is located below the guide rod, the reset spring 22 is located between the blocking block 17 and the mounting rod 27, the extension direction of the reset spring 22 is parallel to the sliding direction of the corresponding blocking block 17, one end of the reset spring 22 is fixed on the sliding rod 16, and the other end is fixed on the bottom wall of the blocking block 17, the adsorption force between the first magnet 20 and the second magnet 21 is greater than the elastic force of the reset spring 22, and when the reset spring 22 is in a natural state, the blocking block 17 is located in the corresponding first adsorption through hole 12.

[0039] When a heat sink workpiece with a special shape is placed in the placement groove 14 for processing, the heat sink workpiece will not cover the first adsorption through hole 12. As the vacuum chamber 4 in the adsorption platform 2 generates negative pressure, the negative pressure adsorbs and fixes the heat sink workpiece through the second adsorption through hole 13. At this time, the negative pressure will adsorb the blocking block 17 to move downward until the blocking block 17 and the sliding rod 16 move to align with the corresponding receiving groove 18 under the limiting action, and the receiving groove 18 and the first adsorption through hole 12 are closed, so that the flying chips from the heat sink processing in the placement groove 14 are not easy to enter the first adsorption through hole 12. Since the adjusting rod 19 has not moved, the first magnet 20 and the second magnet 21 are in a misaligned state, and the blocking block 17 will not enter the receiving groove 18.

[0040] When the plate-shaped heat sink workpiece is placed on the tooling plate 3 to cover the first adsorption through hole 12, the plate-shaped heat sink workpiece presses the sliding rod 16 and the adjusting rod 19, driving the sliding rod 16 and the adjusting rod 19 to move downward synchronously until the upper surfaces of the sliding rod 16 and the adjusting rod 19 are flush with the upper surface of the tooling plate 3. At this time, the blocking block 17 is aligned with the receiving groove 18, and the first magnet 20 moves into the receiving groove 18. Then the first magnet 20 adsorbs the second magnet 21 on the blocking block 17 to drive the blocking block 17 to slide in the direction away from the corresponding sliding rod 16 until the first magnet 20 and the second magnet 21 are adsorbed and cooperated, and the blocking block 17 moves into the receiving groove 18 to open the corresponding first adsorption through hole 12, thereby facilitating the negative pressure in the vacuum chamber 4 to adsorb and fix the plate-shaped heat sink workpiece through the first adsorption through hole 12.

[0041] When the plate-shaped heat sink workpiece is processed, the adsorption and fixation of the heat sink workpiece is unlocked, and the heat sink workpiece is removed from the tooling plate 3. As the abutting force on the adjusting rod 19 decreases, the second spring 26 pushes the adjusting rod 19 to move up for reset, so that the first magnet 20 is separated from the second magnet 21. Then, the blocking block 17 approaches the corresponding sliding rod 16 under the action of the reset spring 22, and then the blocking block 17 moves into the corresponding first adsorption through hole 12. The compressed first spring 25 pushes the sliding rod 16 to drive the blocking block 17 to move up and reset, so that impurities are not easy to enter the first adsorption through hole 12.

[0042] The implementation principle of the embodiment of the present invention is as follows: when in use, align the positioning column 6 of the required type of tooling plate 3 with the positioning hole 9 on the adsorption platform 2, then cover the tooling plate 3 on the adsorption platform 2, so that the positioning column 6 is plugged into the corresponding positioning hole 9 to achieve zero-point positioning, and then the positioning column 6 is preliminarily locked by the cooperation of the positioning ball 10 and the positioning groove 7, so that the tooling plate 3 is pressed against the sealing frame 15; then the heat sink workpiece to be processed is placed at the required position on the tooling plate 3, specifically, for the heat sink workpiece with a special shape, it is placed in the placement groove 14 to cover the second adsorption through hole 13, and for the plate-shaped heat sink workpiece, it is placed on the surface of the tooling plate 3 to cover the first adsorption through hole 12, and then the vacuum chamber 4 in the adsorption platform 2 is formed with a negative pressure through the external air path, so that the tooling plate 3 and the heat sink workpiece are fixed under the action of negative pressure adsorption.

[0043] When the processing is completed and the heat sink workpiece needs to be removed, the negative pressure in the vacuum chamber 4 is unlocked through the external air circuit, so that the fixation of the heat sink workpiece and the tooling plate 3 can be released, which helps to make the disassembly and assembly of the heat sink workpiece convenient and quick, and at the same time facilitates the direct transfer of the tooling plate 3 to the subsequent process.

[0044] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A zero-point positioning tool, characterized in that: The invention comprises a mounting platform (1), an adsorption platform (2) and a tooling plate (3), wherein the adsorption platform (2) is arranged on the mounting platform (1), a vacuum chamber (4) is provided in the adsorption platform (2), a vacuum joint (5) for connecting the vacuum chamber (4) with an external air circuit is provided on the adsorption platform (2), the tooling plate (3) and the adsorption platform (2) are covered to form a sealed space with the vacuum chamber (4), and an adsorption hole group is provided on the tooling plate (3), and the adsorption hole group is used to connect with an external air circuit to form negative pressure adsorption.

2. A zero-point positioning tool according to claim 1, characterized in that: A plurality of positioning posts (6) are arranged on the tooling plate (3), and positioning grooves (7) are provided on the positioning posts (6). A zero-point positioning seat (8) is arranged in the adsorption platform (2), and the zero-point positioning seat (8) corresponds to the positioning posts (6) one by one. A positioning hole (9) is provided on the zero-point positioning seat (8) and is plugged into and matched with the corresponding positioning post (6). A positioning ball (10) is slidably arranged in the positioning hole (9) and is used to match with the positioning groove (7). The sliding direction of the positioning ball (10) is perpendicular to the depth direction of the positioning hole (9). An adjusting member (11) is arranged in the positioning hole (9) and is used to adjust the sliding direction of the positioning ball (10) toward or away from the positioning groove (7).

3. A zero-point positioning tool according to claim 2, characterized in that: The adjusting member (11) comprises a single-beveled positioning block (111) slidably arranged in the positioning hole (9) and a pushing spring (112) arranged in the positioning hole (9); the sliding direction of the single-beveled positioning block (111) is perpendicular to the depth direction of the positioning hole (9); the positioning ball (10) is arranged on the inclined surface of the single-beveled positioning block (111); and the pushing spring (112) is used to push the single-beveled positioning block (111) to slide in a direction close to the positioning column (6).

4. A zero-point positioning tool according to claim 1, characterized in that: The adsorption hole group comprises a first adsorption group and a second adsorption group, the first adsorption group comprises a plurality of first adsorption through holes (12) provided on the tooling plate (3), the second adsorption group comprises a plurality of second adsorption through holes (13) provided on the tooling plate (3), a placement groove (14) is provided on the tooling plate (3), and the second adsorption through holes (13) are located in the placement groove (14).

5. A zero-point positioning tool according to claim 4, characterized in that: The first adsorption through hole (12) is located outside the placement groove (14).

6. A zero-point positioning tool according to claim 1, characterized in that: The adsorption hole group is communicated with the vacuum chamber (4).

7. The zero-point positioning tool according to claim 1, characterized in that: A plurality of adsorption platforms (2) are provided on the installation platform (1), and the tooling plates (3) correspond one to one with the adsorption platforms (2).

8. A zero-point positioning tool according to any one of claims 1 to 7, characterized in that: A sealing frame (15) is provided on the adsorption platform (2), and the sealing frame (15) is used to cooperate with the corresponding tooling plate (3) to form a sealed space.

9. A zero-point positioning tool according to claim 5, characterized in that: A sliding rod (16) is slidably arranged in the first adsorption through hole (12), and the sliding direction of the sliding rod (16) is parallel to the depth direction of the first adsorption through hole (12). A first elastic member for driving the sliding rod (16) to reset is arranged in the first adsorption through hole (12). When the first elastic member is in a natural state, the sliding rod (16) extends out of the first adsorption through hole (12) away from one end of the adsorption platform (2). A blocking block (17) is slidably arranged on the sliding rod (16), and the sliding direction of the blocking block (17) is perpendicular to the sliding direction of the sliding rod (16). An accommodating groove (18) for accommodating the blocking block (17) is provided on the inner wall of the first adsorption through hole (12). A moving member for adjusting the blocking block (17) to slide toward or away from the accommodating groove (18) is provided on the tooling plate (3). When the first elastic member is in a natural state, the blocking block (17) is located above the accommodating groove (18).

10. A zero-point positioning tool according to claim 9, characterized in that: The movable member comprises an adjusting rod (19) slidably penetrated on the tooling plate (3), a first magnet (20) arranged on the adjusting rod (19), a second magnet (21) arranged on the blocking block (17) and a reset spring (22) arranged on the sliding rod (16); the adjusting rod (19) corresponds to the blocking block (17) one by one; the sliding direction of the adjusting rod (19) is parallel to the sliding direction of the sliding rod (16); the adjusting rod (19) extends into the receiving groove (18); a second elastic member for resetting the adjusting rod (19) is arranged in the receiving groove (18); when the first elastic member and the second elastic member are both in a natural state, the adjusting rod (19) protrudes from the surface of the tooling plate (3) and the corresponding sliding rod (16) protrudes from the tooling plate (3) when the upper surface of the adjusting rod (19) is flush with the upper surface of the tooling plate (3), the first magnet (20) is located in the accommodating groove (18), the first magnet (20) is used to adsorb the second magnet (21) on the blocking block (17), the reset spring (22) is used to pull the blocking block (17) to reset, the adsorption force between the first magnet (20) and the second magnet (21) is greater than the elastic force of the reset spring (22), when the reset spring (22) is in a natural state, the blocking block (17) is located in the corresponding first adsorption through hole (12), when the first elastic member and the second elastic member are both in a natural state, the first magnet (20) on the adjusting rod (19) is flush with the second magnet (21) on the blocking block (17).

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