High-precision manual quick-change mechanism
Patent Information
- Application Number
- CN202522153083.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-11
- Publication Date
- 2026-10-27
- Estimated Expiration
- 2035-10-11
AI Technical Summary
[0004]本实用新型所要解决的技术问题是提供了一种高精度手动快换机构，它能够有效解决现有技术中，不满足高精度换型要求场合下，压头，测量头，抓手等结构实现手动快速换型的问题
1、该高精度手动快换机构，通过插块与插槽和指示销与活动槽的设计，可实现快换件的快速定位，再配合上拉拔销、通槽一、通槽二与限位槽，可实现快换件的快速限位，杜绝快换件在工作过程中出现轴向窜动、径向偏移的问题，即便在高频振动、冲击载荷的工况下，仍能保持结构的稳定性，通过防错环与防错螺钉的配合，能起到“防呆”作用，只有当快换件的型号、规格与主连接件完全匹配时，防错螺钉才能顺利与防错环配合安装，若使用错误型号的快换件，防错环会碰上防错螺钉，无法安装到位，实现机械防错；
Smart Images
Figure CN224903676U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automated assembly technology, specifically a high-precision manual quick-change mechanism. Background Technology
[0002] High-precision manual quick-change mechanisms are mechanical connection devices that allow for rapid assembly and disassembly of equipment, tooling, or components without external power, through manual operation. Their core function is to shorten changeover, maintenance, or component replacement time, thereby improving operational efficiency. They are widely used in machine tool fixtures, automated production line auxiliary equipment, and engineering machinery accessories. Typically, they consist of two parts: a "male" connector (fitting the component to be replaced) and a "female" connector (fixed to the main unit). Key design features include positioning mechanisms (such as guide pins to ensure precise alignment) and locking mechanisms (such as hand-tightening bolts, quick-release pins, and cam handles, allowing for manual tightening / unlocking). Some models also integrate sealing or anti-loosening structures to ensure connection stability and sealing. Compared to automatic quick-change mechanisms, they are lower in cost, simpler in structure, and have a lower failure rate. They are suitable for scenarios with low changeover frequency, limited space, or cost sensitivity, such as tool and fixture replacement for small machine tools and accessory switching for manual tools.
[0003] Currently, the commonly used simple quick-change structure generally uses a shaft-hole fit with a side pin or set screw for quick assembly and disassembly, enabling manual replacement of the tooling head. This structure is simple and can meet general accuracy requirements. However, for some high-precision applications, such as repeatability within ±0.03 and requiring zero end face clearance, this commonly used structure cannot meet the accuracy requirements because the fit clearance is too small, making manual insertion very difficult and prone to jamming and structural damage. The side pin or set screw cannot guarantee 100% end face contact, leaving some gap. For high-precision applications, more complex or high-cost structures are mostly used for changing the gun disc, such as manual tooling change, etc. Moreover, the changeover requires a certain amount of operation time. Automated changeover is also used, but its cost and structural complexity far exceed those of manual changeover. Summary of the Invention
[0004] The technical problem to be solved by this utility model is to provide a high-precision manual quick-change mechanism, which can effectively solve the problem of manual quick-change of pressure head, measuring head, gripper and other structures in the prior art when the high-precision change-change requirements are not met.
[0005] The technical solution adopted by this utility model is as follows: a high-precision manual quick-change mechanism, including a connecting block and a main connecting member. A pull block is fixedly installed on the end of the main connecting member near the connecting block. A spring is fixedly installed on the side of the pull block away from the connecting block. A positioning sleeve is fixedly installed on the end of the spring away from the pull block. A slot is opened on the side of the pull block near the positioning sleeve. A quick-change member is provided on the side of the main connecting member away from the connecting block. An insert block is fixedly installed on the end of the quick-change member near the pull block. An indicator pin is fixedly installed on the end of the quick-change member away from the pull block. An anti-misalignment screw is threadedly connected to the end of the quick-change member away from the pull block. An anti-misalignment ring is fixedly installed on the end of the main connecting member away from the connecting block. A movable groove and a through groove one are opened on the end of the main connecting member away from the connecting block. A through groove two is opened on the end of the positioning sleeve away from the pull block. A limit groove is opened on the end of the quick-change member away from the insert block. A pull pin is inserted into the outer wall of the main connecting member.
[0006] Preferably, the plug and the slot are plugged in, and the indicator pin is located inside the movable slot.
[0007] Using the above technical solution, the worker inserts the plug into the slot, so that the indicator pin is located inside the movable slot. Then, the quick-change part is rotated so that the indicator pin points to the "closed" position, thereby connecting the through slot one and through slot two with the limiting slot. This facilitates the subsequent use of the pull pin to limit the quick-change part, enabling the quick-change part to be positioned quickly.
[0008] Preferably, the positioning sleeve is fitted with the conical surface of the quick-change component, and the end face of the quick-change component is fitted with the end face of the main connector.
[0009] Through the above technical solution, the positioning sleeve and quick-change component work together to automatically correct the installation position of the quick-change component through the guiding effect of the conical surface, ensuring that the center line of the quick-change component and the main connecting component are accurately aligned. Through the cooperation between the quick-change component and the main connecting component, the axial displacement of the quick-change component can be further restricted, avoiding vibration transmission caused by end face gaps, and improving the overall structural stability. It is especially suitable for working conditions with high precision requirements.
[0010] Preferably, three identical springs are provided, and the three springs are arranged in a ring.
[0011] Through the above technical solution, the design of three identical springs distributed in a ring can uniformly apply elastic force from the circumference of the pull block, so that when the pull block is subjected to the force of the quick-change component, the force is consistent in all directions, avoiding deformation of the pull block or damage to the springs due to excessive local force. At the same time, the uniform elastic support can keep the quick-change component in a stable pre-tight state after installation, improving the smoothness of the structure operation.
[0012] Preferably, the anti-misalignment ring is adapted to the anti-misalignment screw, and the center lines of the quick-change component and the main connecting component are located on the same vertical line.
[0013] The above technical solution, through the cooperation of the error-proof ring and the error-proof screw, can play a "foolproof" role. Only when the model and specifications of the quick-change part are completely matched with the main connecting part can the error-proof screw be successfully installed with the error-proof ring. If the wrong model of quick-change part is used, the error-proof ring will hit the error-proof screw and cannot be installed in place, thus achieving mechanical error prevention.
[0014] Preferably, the first through groove and the second through groove are connected to the limiting groove, and the pull pin extends through the first through groove and the second through groove into the interior of the limiting groove.
[0015] With the above technical solution, after the quick-change part is quickly positioned, the worker extends the pull pin through the first and second through slots to the inside of the limiting slot, which can realize the quick-change part's quick-limiting and prevent the quick-change part from axial movement and radial displacement during operation. Even under high-frequency vibration and impact load conditions, the structure can still maintain stability. When disassembling the quick-change part, first pull out the pull pin, then rotate the quick-change part so that the indicator pin points to the "open" position, and then pull out the quick-change part to complete the disassembly.
[0016] Compared with the prior art, this utility model provides a high-precision manual quick-change mechanism, which has the following advantages: 1. This high-precision manual quick-change mechanism, through the design of the insert block and slot and the indicator pin and movable groove, can realize the rapid positioning of the quick-change parts. In addition, with the pull pin, through groove one, through groove two and limit groove, the quick-change parts can be quickly limited, eliminating the problem of axial movement and radial displacement of the quick-change parts during operation. Even under high-frequency vibration and impact load conditions, it can still maintain the stability of the structure. Through the cooperation of the anti-mistake ring and anti-mistake screw, it can play a "foolproof" role. Only when the model and specifications of the quick-change part are completely matched with the main connecting parts can the anti-mistake screw be successfully installed with the anti-mistake ring. If the wrong model of quick-change part is used, the anti-mistake ring will hit the anti-mistake screw and cannot be installed in place, thus realizing mechanical error prevention. 2. This high-precision manual quick-change mechanism, through the cooperation of the positioning sleeve and the quick-change component, can automatically correct the installation position of the quick-change component through the guiding effect of the conical surface, ensuring that the center line of the quick-change component and the main connecting component are precisely aligned. Through the cooperation between the quick-change component and the main connecting component, the axial displacement of the quick-change component can be further restricted, avoiding vibration transmission caused by end face gaps, and improving the overall structural stability. It is especially suitable for working conditions with high precision requirements. Through the design of three springs, the three identical springs are distributed in a ring, which can apply elastic force evenly from the circumference of the pull block, so that when the pull block is subjected to the force of the quick-change component, the force in all directions is consistent, avoiding deformation of the pull block or damage to the springs due to excessive local force. At the same time, the uniform elastic support can keep the quick-change component in a stable pre-tightened state after installation, improving the smoothness of the structure operation. Attached Figure Description
[0017] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the disassembled structure of this utility model; Figure 3 This is a half-sectional structural diagram of the main connecting component of this utility model; Figure 4 This is a schematic diagram of the three-dimensional structure of the pull block of this utility model; Figure 5 This is a schematic diagram of the spring mounting structure of this utility model; Figure 6 This is a three-dimensional structural diagram of the quick-change component of this utility model.
[0018] The components are: 1. Connecting block; 2. Main connecting part; 3. Pull block; 4. Spring; 5. Positioning sleeve; 6. Slot; 7. Quick change part; 8. Insert block; 9. Indicator pin; 10. Anti-misalignment screw; 11. Anti-misalignment ring; 12. Movable slot; 13. Through slot one; 14. Through slot two; 15. Limiting slot; 16. Pull pin. Detailed Implementation
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0020] Example 1: like Figure 1-6As shown, this utility model provides a high-precision manual quick-change mechanism, including a connecting block 1 and a main connecting member 2. A pull block 3 is fixedly installed on the end of the main connecting member 2 near the connecting block 1. A spring 4 is fixedly installed on the side of the pull block 3 away from the connecting block 1. A positioning sleeve 5 is fixedly installed on the end of the spring 4 away from the pull block 3. A slot 6 is provided on the side of the pull block 3 near the positioning sleeve 5. A quick-change member 7 is provided on the side of the main connecting member 2 away from the connecting block 1. An insert block 8 is fixedly installed on the end of the quick-change member 7 near the pull block 3. The quick-change part 7 is fixedly installed with an indicator pin 9 at the end away from the pull block 3. The quick-change part 7 is threadedly connected with an anti-misalignment screw 10 at the end away from the pull block 3. The main connector 2 is fixedly installed with an anti-misalignment ring 11 at the end away from the connecting block 1. The main connector 2 is provided with a movable groove 12 and a through groove 13 at the end away from the connecting block 1. The positioning sleeve 5 is provided with a through groove 2 14 at the end away from the pull block 3. The quick-change part 7 is provided with a limit groove 15 at the end away from the insert block 8. The outer wall of the main connector 2 is inserted with a pull pin 16.
[0021] Specifically, the insert 8 and the slot 6 are plugged in, and the indicator pin 9 is located inside the movable slot 12. The advantage is that when the operator inserts the insert 8 into the slot 6, the indicator pin 9 is located inside the movable slot 12. Then, the quick-change part 7 is rotated so that the indicator pin 9 points to the "closed" position, thereby connecting the through slot 13, through slot 2 14 and the limiting slot 15. This facilitates the subsequent use of the pull pin 16 to limit the quick-change part 7, enabling the quick-change part 7 to be positioned quickly.
[0022] Specifically, the positioning sleeve 5 and the conical surface of the quick-change component 7 are fitted together, and the end face of the quick-change component 7 is fitted together with the end face of the main connecting component 2. The advantage is that, through the cooperation of the positioning sleeve 5 and the quick-change component 7, the installation position of the quick-change component 7 can be automatically corrected by the guiding effect of the conical surface, ensuring precise alignment of the center line of the quick-change component 7 and the main connecting component 2. Furthermore, the cooperation between the quick-change component 7 and the main connecting component 2 can further limit the axial displacement of the quick-change component 7, avoiding vibration transmission caused by end face gaps, and improving the overall structural stability, making it particularly suitable for applications requiring high precision.
[0023] Example 2: like Figure 2-6 As shown, as an improvement on the previous embodiment, to further enhance the stability of the quick-change component 7 after installation, specifically, three identical springs 4 are provided, arranged in a ring. The advantage is that the design of three springs 4, with the three identical springs arranged in a ring, allows for the uniform application of elastic force from the circumference of the pull block 3. This ensures that when the pull block 3 is subjected to the force of the quick-change component 7, the force is consistent in all directions, preventing deformation of the pull block 3 or damage to the springs 4 due to excessive localized force. Simultaneously, the uniform elastic support allows the quick-change component 7 to maintain a stable pre-tension state after installation, improving the smoothness of structural operation.
[0024] Specifically, the error-proof ring 11 is compatible with the error-proof screw 10, and the center lines of the quick-change part 7 and the main connector 2 are on the same vertical line. The advantage is that the cooperation between the error-proof ring 11 and the error-proof screw 10 can play a "foolproof" role. Only when the model and specifications of the quick-change part 7 are completely matched with the main connector 2 can the error-proof screw 10 be successfully installed with the error-proof ring 11. If an incorrect model of quick-change part 7 is used, the error-proof ring 11 will hit the error-proof screw 10 and cannot be installed in place, thus achieving mechanical error prevention.
[0025] Specifically, through slot 13 and through slot 2 are connected to the limiting slot 15, and the pull pin 16 extends through through slot 13 and through slot 2 to the interior of the limiting slot 15. The advantage is that after quickly positioning the quick-change part 7, the operator can extend the pull pin 16 through through slot 13 and through slot 2 to the interior of the limiting slot 15, achieving rapid limiting of the quick-change part 7 and preventing axial movement and radial displacement during operation. Even under high-frequency vibration and impact load conditions, the structure can maintain stability. When disassembling the quick-change part 7, first pull out the pull pin 16, then rotate the quick-change part 7 so that the indicator pin 9 points to the "open" position, and then pull out the quick-change part 7 to complete the disassembly.
[0026] Working principle: During the replacement process, the operator first pulls out the pull pin 16, then rotates the quick-change part 7 until the indicator pin 9 points to the "open" position. The quick-change part 7 is then pulled out to complete the disassembly. Next, the insert block 8 on the quick-change part 7 to be replaced is inserted into the slot 6, so that the indicator pin 9 is located inside the movable slot 12. The quick-change part 7 is then rotated until the indicator pin 9 points to the "closed" position, thus connecting the through slots 13 and 14 with the limiting slot 15. This facilitates subsequent use of the pull pin 16 to limit the quick-change part 7. This design enables rapid positioning of the quick-change component 7. After quick positioning, the pull pin 16 extends through the through slot 13 and through slot 2 to the inside of the limiting slot 15, achieving rapid limiting of the quick-change component 7 and preventing axial movement and radial displacement during operation. Even under high-frequency vibration and impact load conditions, the structure remains stable. Through the cooperation of the positioning sleeve 5 and the quick-change component 7, the installation position of the quick-change component 7 can be automatically corrected by the guiding effect of the conical surface, ensuring precise alignment between the quick-change component 7 and the center line of the main connecting component 2. The cooperation between the quick-change component 7 and the main connecting component 2 further restricts the axial displacement of the quick-change component 7, avoiding vibration transmission caused by end face gaps and improving the overall structural stability. It is especially suitable for working conditions with high precision requirements. Through the design of three springs 4, the three identical springs 4 are distributed in a ring, which can uniformly apply elastic force from the circumference of the pull block 3, so that when the pull block 3 is subjected to the force of the quick-change component 7, the force in all directions is consistent, avoiding excessive local force. This can cause the pull block 3 to deform or the spring 4 to be damaged. At the same time, the uniform elastic support allows the quick-change part 7 to maintain a stable pre-tight state after installation, improving the smoothness of the structure's operation. Through the cooperation of the anti-mistake ring 11 and the anti-mistake screw 10, it can play a "mistake-proof" role. Only when the model and specifications of the quick-change part 7 are completely matched with the main connecting part 2 can the anti-mistake screw 10 be successfully installed with the anti-mistake ring 11. If the wrong model of quick-change part 7 is used, the anti-mistake ring 11 will hit the anti-mistake screw 10 and cannot be installed in place, thus achieving mechanical error prevention.
[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A high-precision manual quick-change mechanism, comprising a connecting block (1) and a main connecting member (2), characterized in that: A pull block (3) is fixedly installed on one end of the main connector (2) near the connecting block (1). A spring (4) is fixedly installed on the side of the pull block (3) away from the connecting block (1). A positioning sleeve (5) is fixedly installed on the end of the spring (4) away from the pull block (3). A slot (6) is provided on the side of the pull block (3) near the positioning sleeve (5). A quick-change piece (7) is provided on the side of the main connector (2) away from the connecting block (1). A plug (8) is fixedly installed on one end of the quick-change piece (7) near the pull block (3). A plug (8) is fixedly installed on the other end of the quick-change piece (7) away from the pull block (3). Equipped with an indicator pin (9), the quick-change part (7) is threaded with an anti-misalignment screw (10) at the end away from the pull block (3), the main connector (2) is fixedly installed with an anti-misalignment ring (11) at the end away from the connecting block (1), the main connector (2) is provided with a movable groove (12) and a through groove one (13) at the end away from the connecting block (1), the positioning sleeve (5) is provided with a through groove two (14) at the end away from the pull block (3), the quick-change part (7) is provided with a limit groove (15) at the end away from the insert block (8), and a pull pin (16) is inserted into the outer wall of the main connector (2).
2. The high-precision manual quick-change mechanism according to claim 1, characterized in that: The plug (8) and the slot (6) are plugged in and installed together, and the indicator pin (9) is located inside the movable slot (12).
3. The high-precision manual quick-change mechanism according to claim 1, characterized in that: The positioning sleeve (5) is in contact with the conical surface of the quick-change part (7), and the end face of the quick-change part (7) is in contact with the end face of the main connector (2).
4. A high-precision manual quick-change mechanism according to claim 1, characterized in that: The spring (4) is provided in three identical parts, and the three springs (4) are arranged in a ring.
5. A high-precision manual quick-change mechanism according to claim 1, characterized in that: The anti-error ring (11) is adapted to the anti-error screw (10), and the center line of the quick-change part (7) and the main connecting part (2) are located on the same vertical line.
6. The high-precision manual quick-change mechanism according to claim 1, characterized in that: The first through groove (13) and the second through groove (14) are connected to the limiting groove (15), and the pull pin (16) extends through the first through groove (13) and the second through groove (14) into the interior of the limiting groove (15).