Quick-change structure for machining fixture
By combining the quick-change mechanism and the drive mechanism, the fixture can be quickly changed and stably installed, solving the problems of cumbersome fixture replacement and unstable connection in traditional fixtures, and improving the efficiency and safety of machining.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUBEI OULANG MASCH CO LTD
- Filing Date
- 2025-08-28
- Publication Date
- 2026-07-31
AI Technical Summary
Traditional machining fixtures are cumbersome to change, have poor positioning accuracy and connection stability, and are prone to loosening or falling off under cutting forces and vibrations, posing safety hazards.
The quick-change mechanism includes a turntable, slide rail, drive mechanism, clamp fixing mechanism and positioning mechanism. The clamps are switched by sliding the turntable on the slide rail, and the motor and reducer drive the mechanism. The positioning pin and gripper are used to achieve quick change and stable installation of the clamps.
It enables quick fixture changes and stable positioning, improves production efficiency, prevents fixture loosening or displacement during processing, and ensures processing accuracy and safety.
Smart Images
Figure CN224575215U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of fixture loading and unloading, and in particular to a quick-change structure for machining fixtures. Background Technology
[0002] In the modern machining industry, in order to improve production efficiency and machining accuracy, it is often necessary to quickly change fixtures according to different machining tasks.
[0003] Traditional machining fixture replacement methods are usually cumbersome, requiring operators to spend a lot of time on disassembly and installation. Moreover, due to frequent fixture replacement, the positioning accuracy and connection stability between the fixture and the base are easily affected, leading to increased machining errors. In existing quick-change fixture structures, some use simple snap-fit connections, which, although enabling fixture replacement to a certain extent, are prone to loosening or even falling off when subjected to large cutting forces and vibrations, posing safety hazards.
[0004] Regarding the aforementioned technologies, the applicant believes that there is a drawback of low fixture replacement efficiency. Utility Model Content
[0005] To solve the above-mentioned technical problems, this application provides a quick-change structure for machining fixtures.
[0006] This application provides a quick-change structure for a machining fixture, which adopts the following technical solution: A quick-change structure for a machining fixture includes a base, a quick-change mechanism, a drive mechanism, a fixture fixing mechanism, and a positioning mechanism. The quick-change mechanism is mounted on the base and fixedly connected to the base, and the fixture is disposed on the quick-change mechanism. The drive mechanism is mounted on the base and fixedly connected to the base, and the drive mechanism is detachably connected to the quick-change mechanism. The fixture fixing mechanism is mounted on the quick-change mechanism and fixedly connected to the quick-change mechanism. The positioning mechanism is mounted on the quick-change mechanism and detachably connected to the quick-change mechanism.
[0007] By adopting the above technical solution, the quick-change mechanism realizes the rapid replacement and positioning of the fixture. Different fixtures are switched by the sliding of the turntable on the slide rail, providing a mounting carrier for the fixture. The drive mechanism provides power to the quick-change mechanism to realize the rotation drive of the turntable. The quick-change mechanism works with the drive mechanism to complete the motion execution. The fixture fixing mechanism firmly installs the fixture on the quick-change mechanism to prevent the fixture from loosening or shifting during processing and to ensure the connection stability between the fixture and the quick-change mechanism. After the quick-change mechanism switches to the target position, it achieves mechanical locking through the positioning mechanism.
[0008] Preferably, the quick-change mechanism includes a turntable and a slide rail. The slide rail is mounted on the base and is fixedly connected to the base. The turntable is mounted on the slide rail and is slidably connected to the slide rail. The lower surface of the turntable is attached to the upper surface of the base and slides relative to it.
[0009] By adopting the above technical solution, the turntable serves as the direct mounting carrier for the fixtures. Multiple fixture mounting positions can be set on the turntable, and the slide rail provides a precise sliding trajectory for the turntable, restricting its degree of freedom of movement and ensuring that the turntable moves smoothly along the predetermined path, avoiding deviation or shaking. By rotating or sliding, different fixtures can be switched to the processing area, realizing the function of quickly changing fixtures.
[0010] Preferably, the base has a lubricating oil tank on each side, and each lubricating oil tank is connected to a hose. There is a gap between the inner side of the base and the quick-change mechanism, and the hose is located in the gap between the two. The hose is detachably connected to the base.
[0011] By adopting the above technical solution, the hose guides the lubricating oil from the oil tank to the gap between the base and the quick-change mechanism, thereby supplying oil and forming a continuous lubricating film between the contact surfaces of the base and the quick-change mechanism, reducing the coefficient of friction.
[0012] Preferably, the drive mechanism includes a motor, a reducer, and a transmission mechanism. The output shaft of the motor is connected to the input shaft of the reducer. Both the motor and the reducer are located on one side of the quick-change mechanism, and the connection between the output shaft of the motor and the input shaft of the reducer is parallel to the working surface of the quick-change mechanism.
[0013] By adopting the above technical solution, if the power and torque range of the geared motor are limited when set directly, the combination of motor and reducer can provide greater flexibility, better heat dissipation, and the ability to be paired with a high-power motor, thereby increasing the versatility of the installation.
[0014] Preferably, the transmission mechanism is a gear transmission mechanism, with a first gear on the output shaft of the motor, a second gear and a third gear on the input shaft and output shaft of the reducer respectively, and the first gear meshing with the second gear. A driven gear ring is provided on the edge of the quick-change mechanism, and the driven gear ring meshing with the third gear.
[0015] By adopting the above technical solution, the movement direction and speed control of the quick-change mechanism are realized through the start-stop, forward and reverse rotation and speed adjustment of the motor. The reducer converts the high-speed low torque output of the motor into low-speed high torque to meet the working requirements of driving the quick-change mechanism to rotate. The first gear is installed on the motor output shaft and acts as the driving wheel to transmit the motor power to the reducer where the second gear is located. The third gear is installed on the reducer output shaft and acts as the final output stage of the reducer to transmit the reduced torque to the quick-change mechanism where the driven gear ring is located, thereby completing the force transmission.
[0016] Preferably, the clamp fixing mechanism includes multiple jaws and a hinge support. The hinge support is fixedly installed on a quick-change mechanism around the clamp. The jaws are hinged to the hinge support, and the clamp is fixed at the upper end of the jaws.
[0017] By adopting the above technical solution, the gripper is fixed in position on the turntable by the hinge support, and the upper ends of multiple grippers hold the fixture, so that the position of each fixture on the turntable is fixed, which makes it convenient for the workpiece to be changed without affecting the working position of the tool, thus improving production efficiency.
[0018] Preferably, the positioning mechanism includes multiple positioning pins, positioning holes, and positioning grooves. The positioning holes are arranged around the periphery of the quick-change mechanism on the quick-change mechanism, and the base corresponding to the positioning holes is provided with positioning grooves. The positioning pins are respectively inserted into the corresponding positioning holes and positioning grooves.
[0019] By adopting the above technical solution, the positioning pin restricts the rotational freedom of the quick-change mechanism in the plane, ensuring that it maintains a fixed position during processing and avoiding displacement due to vibration or cutting force. The positioning holes on the turntable and the positioning grooves on the base provide a precise insertion path for the positioning pin.
[0020] Preferably, an opening slot is provided on the base on one side of the slide rail mounting location, and a hanging groove is provided on the base surface below the opening slot. The opening of the hanging groove corresponds to the opening slot, and the hanging groove is detachably connected to the base.
[0021] By adopting the above technical solution, when liquid oil such as lubricating oil flows from the gap of the base to the opening, it can be discharged from here and will not accumulate inside the work platform and affect its normal operation. The hanging groove can collect the oil stains under the opening and make it convenient for staff to handle them uniformly.
[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. The quick-change mechanism enables rapid change and positioning of fixtures. Different fixtures are switched by the sliding of the turntable on the slide rail, providing a mounting carrier for the fixtures. The drive mechanism provides power to the quick-change mechanism to drive the rotation of the turntable. The quick-change mechanism works with the drive mechanism to complete the motion execution. The fixture fixing mechanism firmly installs the fixture on the quick-change mechanism to prevent the fixture from loosening or shifting during processing, ensuring the connection stability between the fixture and the quick-change mechanism. After the quick-change mechanism switches to the target position, it achieves mechanical locking through the positioning mechanism.
[0023] 2. The movement direction and speed of the quick-change mechanism are controlled by starting, stopping, reversing, and adjusting the speed of the motor. The reducer converts the high-speed, low-torque output of the motor into low-speed, high-torque output to meet the working requirements of driving the quick-change mechanism to rotate. The first gear is mounted on the motor output shaft and acts as the driving gear to transmit the motor power to the reducer where the second gear is located. The third gear is mounted on the reducer output shaft and acts as the final output stage of the reducer, transmitting the reduced torque to the quick-change mechanism where the driven gear ring is located, thus completing the force transmission. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of the overall embodiment.
[0025] Figure 2 This is an enlarged view of the transmission mechanism.
[0026] Figure 3 yes Figure 1 Partial sectional view of AA.
[0027] Figure 4 yes Figure 1 A partial sectional view of B in the middle.
[0028] Explanation of reference numerals in the attached drawings: 1. Base; 2. Quick-change mechanism; 21. Turntable; 22. Slide rail; 3. Drive mechanism; 31. Motor; 32. Reducer; 33. Transmission mechanism; 331. First gear; 332. Second gear; 333. Third gear; 334. Driven gear ring; 4. Fixture fixing mechanism; 41. Grip; 42. Hinge support; 5. Positioning mechanism; 51. Positioning pin; 52. Positioning hole; 53. Positioning groove; 6. Lubricating oil tank; 7. Hose; 8. Opening slit; 9. Hanging groove. Detailed Implementation
[0029] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.
[0030] This application discloses a quick-change structure for machining fixtures. (Refer to...) Figure 1-4The system includes a base 1, a quick-change mechanism 2, a drive mechanism 3, a clamping mechanism 4, and a positioning mechanism 5. The quick-change mechanism 2 includes a turntable 21 and a slide rail 22. The slide rail 22 is fixed to the slide rail 22 mounting surface at the bottom of the base 1 with bolts. Then, the turntable 21 is installed on the slide rail 22. The gap between the lower surface of the turntable 21 and the upper surface of the base 1 is adjusted to ensure smooth sliding without significant shaking. The drive mechanism 3 includes a motor 31 and a reducer 32. The motor 31 and the reducer 32 are fixedly installed on the base 1 on one side of the turntable 21 in the quick-change mechanism 2. The output shaft of the motor 31 and the input shaft of the reducer 32 are horizontally installed. A first gear 331 is installed on the output shaft of the motor 31. The input shaft and output shaft of the reducer 32 are connected to the first gear 331. The shaft is equipped with a second gear 332 and a third gear 333 respectively, and the gear meshing clearance is adjusted. A driven gear ring 334 is provided on the edge of the turntable 21 so that it meshes with the third gear 333. The transmission mechanism 33 transmits the rotational power provided by the motor 31 to the turntable 21 to help it complete the rotational movement, thereby helping the clamp to change position. The clamp fixing mechanism 4 includes a jaw 41 and a hinge support 42. The jaw 41 fixes its position on the turntable 21 by the hinge support 42 fixed on the turntable 21. The upper end of the jaw 41 fixes the position of the clamp on the turntable 21. In this way, the clamp can quickly reach the working position without shifting when the turntable 21 is rotated during the quick change process.
[0031] The positioning mechanism 5 includes multiple positioning pins 51, positioning holes 52, and positioning grooves 53. Positioning holes 52 are evenly distributed around the turntable 21, and positioning grooves 53 are machined at corresponding positions on the base 1. Positioning pins 51 are inserted at corresponding positions to ensure smooth insertion and removal and no loosening after positioning. Lubricating oil tanks 6 are fixedly installed on both sides of the base 1 and connected to the gap between the base 1 and the turntable 21 in the quick-change mechanism 2 via hoses 7. The hoses 7 can be detached by snap-fit for easy maintenance. An opening slit 8 is cut on the base 1 at the mounting location of the slide rail 22, and a detachable hanging groove 9 is installed below the opening slit 8. The hanging groove 9 is connected to the base 1 by snap-fit, and the groove opening is aligned with the opening slit 8 for collecting oil.
[0032] The working principle of a quick-change structure for a machining fixture in this application is as follows: The motor 31 is started, and the turntable 21 is driven to slide along the slide rail 22 through the reducer 32 and the transmission mechanism 33. When the target fixture rotates to the processing station, the motor 31 stops running. The positioning pin 51 is inserted into the positioning hole 52 of the turntable 21 and the positioning groove 53 of the base 1 to realize the mechanical locking of the quick change mechanism 2. The positioning pin 51 can be directly inserted by the prefabricated direct insertion robot to ensure that the fixture does not shift during the processing. The fixture is fixed by the fixture fixing mechanism 4. The processing equipment is started to perform cutting, drilling and other operations on the workpiece on the fixture. The lubricating oil in the lubricating oil tank 6 is delivered to the hose 7 by the oil pump and flows continuously or periodically into the gap between the base 1 and the turntable 21 through the hose 7 to form a lubricating film. When the oil stains in the hanging groove 9 accumulate to a certain extent, the hanging groove 9 is disassembled for cleaning.
[0033] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A quick-change structure for a machining fixture, characterized in that: The device includes a base (1), a quick-change mechanism (2), a drive mechanism (3), a clamp fixing mechanism (4), and a positioning mechanism (5). The quick-change mechanism (2) is mounted on the base (1) and is fixedly connected to the base (1). A clamp is set on the quick-change mechanism (2). The drive mechanism (3) is mounted on the base (1) and is fixedly connected to the base (1). The drive mechanism (3) is detachably connected to the quick-change mechanism (2). The clamp fixing mechanism (4) is mounted on the quick-change mechanism (2). The positioning mechanism (5) is mounted on the quick-change mechanism (2).
2. The quick change structure for a machining jig according to claim 1, characterized in that: The quick-change mechanism (2) includes a turntable (21) and a slide rail (22). The slide rail (22) is mounted on the base (1), and the turntable (21) is mounted on the slide rail (22). The turntable (21) is slidably connected to the slide rail (22), and the lower surface of the turntable (21) is attached to the upper surface of the base (1) and slides relative to it.
3. The quick change structure for a machining jig according to claim 1, characterized in that: The base (1) is provided with lubricating oil tanks (6) on both sides, and each lubricating oil tank (6) is connected with a hose (7). There is a gap between the inner side of the base (1) and the quick-change mechanism (2). The hose (7) is located in the gap between the two and the hose (7) is detachably connected to the base (1).
4. The quick change structure for a machining jig according to claim 1, characterized in that: The drive mechanism (3) includes a motor (31), a reducer (32) and a transmission mechanism (33). The output shaft of the motor (31) is connected to the input shaft of the reducer (32). The motor (31) and the reducer (32) are both located on one side of the quick-change mechanism (2), and the connection between the output shaft of the motor (31) and the input shaft of the reducer (32) is parallel to the working surface of the quick-change mechanism (2).
5. The quick change structure for a machining jig according to claim 4, characterized in that: The transmission mechanism (33) is a gear transmission mechanism (33). A first gear (331) is provided on the output shaft of the motor (31). A second gear (332) and a third gear (333) are respectively provided on the input shaft and output shaft of the reducer (32). The first gear (331) and the second gear (332) are meshed and connected. A driven gear ring (334) is provided on the edge of the quick-change mechanism (2). The driven gear ring (334) is meshed and connected to the third gear (333).
6. The quick change structure for a machining jig according to claim 1, characterized in that: The clamp fixing mechanism (4) includes multiple jaws (41) and hinge support (42). The hinge support (42) is fixedly installed on the quick-change mechanism (2) around the clamp. The jaws (41) are hinged to the hinge support (42), and the clamp is fixed at the upper end of the jaws (41).
7. The quick change structure for a machining jig according to claim 1, characterized in that: The positioning mechanism (5) includes multiple positioning pins (51), positioning holes (52) and positioning grooves (53). The positioning holes (52) are arranged around the quick-change mechanism (2) and the base (1) corresponding to the positioning holes (52) is provided with positioning grooves (53). The positioning pins (51) are respectively inserted into the corresponding positioning holes (52) and positioning grooves (53).
8. The quick change structure for a machining jig according to claim 1, characterized in that: An opening (8) is provided on the base (1) on one side of the slide rail (22) installation location. A hanging groove (9) is provided on the surface of the base (1) below the opening (8). The groove of the hanging groove (9) corresponds to the opening (8), and the hanging groove (9) is detachably connected to the base (1).