Hydraulic rotating and clamping fixture for machining center of lock body workpiece
Patent Information
- Application Number
- CN202522302955.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-30
- Publication Date
- 2026-10-16
- Estimated Expiration
- 2035-10-30
AI Technical Summary
[0003]针对现有锁体类零件的加工过程中存在的加工精度低，加工质量得不到保障，加工效率低等问题，本实用新型提供一种锁体类工件加工中心用液压转立加夹具，其加工精度高、加工质量稳定；自动化装夹减少人工干预，省时省力，整体加工效率高
[0006] In the above-described structure of this utility model, the workpiece to be processed is fixedly clamped by the first and second limiting structures of the positioning unit. The clamping process is achieved by the first and second hydraulic cylinders, resulting in a large and stable clamping force and high clamping accuracy. Consequently, the workpiece has good positioning stability, high processing accuracy, and guaranteed processing quality. The worker only needs to manually place the workpiece in the designated area, and the hydraulic cylinder will automatically clamp it, effectively avoiding errors in the manual clamping process and simplifying the operation. The dual-station design further shortens the operation time and increases work efficiency.
Smart Images
Figure CN224855477U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of parts processing tooling technology, specifically a hydraulic rotary machining fixture for a lock body type workpiece machining center. Background Technology
[0002] Currently, manual clamps are commonly used in the processing of lock body parts. This results in uneven stress on the workpiece, easy deformation during processing, and low processing accuracy. The workpiece is also susceptible to operator error; excessive clamping can damage it, while insufficient clamping leads to inaccurate positioning. Consequently, the quality of the parts cannot be guaranteed, and the process is time-consuming, labor-intensive, and has low overall processing efficiency. Utility Model Content
[0003] To address the problems of low machining accuracy, unreliable machining quality, and low machining efficiency in the existing machining process of lock body parts, this utility model provides a hydraulic rotary machining fixture for lock body workpiece machining centers, which has high machining accuracy and stable machining quality; automated clamping reduces manual intervention, saves time and labor, and has high overall machining efficiency.
[0004] The technical solution adopted in this utility model is: A hydraulic rotary machining fixture for a lock body type workpiece machining center is characterized in that: it includes a support unit, and the flange plate of the support unit is provided with a positioning unit; the positioning unit includes a first limiting structure for circumferential positioning of the workpiece and a second limiting structure for axial positioning of the workpiece, and a first rib and a second rib are provided on one side of the flange plate of the support unit, and the first rib and the second rib are connected by a base plate.
[0005] Its further features are: The first limiting structure includes a first upright plate and a second upright plate fixed to the base plate. The first upright plate and the second upright plate are connected by a pull plate. The first upright plate is provided with a positioning pin, and the pull plate is provided with a limiting block. The first hydraulic cylinder of the first limiting structure is installed on the base plate. The push rod end of the first hydraulic cylinder is rotatably connected to one end of the pressure plate, and the middle part of the pressure plate is rotatably installed on the support member. The second limiting structure includes a second hydraulic cylinder installed on the second rib plate. The second hydraulic cylinder is located below the bottom plate. The push rod of the second hydraulic cylinder passes through the second rib plate. A support is fixedly installed on the outside of the second rib plate. A first connecting rod is installed in the middle of the support. The first connecting rod can swing on the support. The bottom end of the first connecting rod is fixed to the push rod of the second oil cylinder. The top end of the first connecting rod is vertically connected to a pin. The other end of the pin is fixed to the midpoint of the second connecting rod, which is placed horizontally. Guide pins are installed at both ends of the second connecting rod, and the guide pins are parallel to the pin. The other end of the guide pin passes through the second vertical plate and is pressed to the other end of the workpiece. The first limiting structure is provided in two sets.
[0006] In the above-described structure of this utility model, the workpiece to be processed is fixedly clamped by the first and second limiting structures of the positioning unit. The clamping process is achieved by the first and second hydraulic cylinders, resulting in a large and stable clamping force and high clamping accuracy. Consequently, the workpiece has good positioning stability, high processing accuracy, and guaranteed processing quality. The worker only needs to manually place the workpiece in the designated area, and the hydraulic cylinder will automatically clamp it, effectively avoiding errors in the manual clamping process and simplifying the operation. The dual-station design further shortens the operation time and increases work efficiency. Attached Figure Description
[0007] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a top view of the present invention; Figure 3 This is the right view of the present invention.
[0008] In the diagram: 1. Support unit; 11. Flange plate; 12. First stiffening plate; 13. Second stiffening plate; 14. Base plate; 2. First limiting structure; 21. First hydraulic cylinder; 22. Pressure plate; 23. First upright plate; 24. Second upright plate; 25. Pull plate; 26. Limiting block; 27. Positioning pin; 28. Support component; 3. Second limiting structure; 31. Second hydraulic cylinder; 32. Support; 33. First connecting rod; 34. Pin; 35. Second connecting rod; 36. Guide pin; 4. Positioning unit. Detailed Implementation
[0009] The present invention will be further described in detail below with reference to embodiments: like Figures 1 to 3 As shown, this utility model provides a hydraulic rotary machining fixture for a lock-type workpiece machining center, which includes a support unit 1 for supporting the workpiece and its clamping accessories. The support unit 1 is provided with a positioning unit 4 for positioning the workpiece. The positioning unit 4 includes a first limiting structure 2 and a second limiting structure 3. The first limiting structure 2 is used to limit the workpiece's degree of freedom of rotation in the circumferential direction, and the second limiting structure 3 is used to limit the workpiece's degree of freedom of movement in the axial direction. Through the cooperation of the first limiting structure 2 and the second limiting structure 3, the workpiece is accurately fixed, and there will be no movement or deviation during the machining process.
[0010] The flange plate 11 of the support unit 1 is provided with a first stiffening plate 12 and a second stiffening plate 13 on one side. The first stiffening plate 12 and the second stiffening plate 13 are connected by a base plate 14, which is used to install the positioning unit 4.
[0011] The first limiting structure 2 includes a first vertical plate 23 and a second vertical plate 24 fixed to the base plate 14. The first vertical plate 23 and the second vertical plate 24 are connected by a pull plate 25. The first vertical plate 23 is provided with a positioning pin 27 for preliminary positioning of the workpiece. When placing the workpiece, the hole at one end of the workpiece is aligned with the positioning pin 27. After preliminary positioning, one end of the workpiece to be processed is in a suspended state and is prone to falling under the influence of gravity. Therefore, the pull plate 25 is provided with a limiting block 26 to limit the degree of freedom of the workpiece to swing clockwise along the axial direction. The first hydraulic cylinder 21 of the first limiting structure 2 is installed on the base plate 14. Plate 14, the push rod end of the first oil cylinder 21 is rotatably connected to the pressure plate 22, the middle part of the pressure plate 22 is rotatably installed on the support member 28, and the other end of the pressure plate 22 rotates around the support member 28 as the center, which is used to limit the degree of freedom of the workpiece to swing counterclockwise along the axial direction. After the tooling is started, the oil circuit is connected, the push rod of the first oil cylinder 21 is retracted, and the pressure plate 22 is driven to press to the top of the workpiece. After reaching the limit, the action stops and the workpiece is pressed. The first limit structure 2 of the positioning unit 4 is provided in two sets, which are respectively installed on the base plate 14. The dual-station design has higher processing efficiency and higher fixture utilization.
[0012] The second limiting structure 3 includes a second hydraulic cylinder 31 installed on the second stiffening plate 13. The second hydraulic cylinder 31 is located below the base plate 14. The push rod of the second hydraulic cylinder 31 passes through the second stiffening plate 13. A support 32 is fixedly installed on the outside of the second stiffening plate 13.
[0013] A first connecting rod 33 is installed in the middle of the support 32. The first connecting rod 33 can swing on the support 32. The bottom end of the first connecting rod 33 is fixed to the push rod of the second hydraulic cylinder 31, and the top end of the first connecting rod 33 is vertically connected to the pin 34. When the push rod of the second hydraulic cylinder 31 is pushed out, it drives the bottom end of the first connecting rod 33 to swing away from the second stiffener 13 around the pivot of the support 32. At this time, the top end of the first connecting rod 33 and the pin 34 it is connected to swing in the opposite direction. Correspondingly, when the push rod of the second hydraulic cylinder 31 is retracted, the swing direction of the first connecting rod 33 is opposite to that described above, thereby realizing that the second hydraulic cylinder 31 controls the movement direction of the pin 34 in the opposite direction.
[0014] The other end of the pin 34 is fixed to the midpoint of the second connecting rod 35, which is placed horizontally. Guide pins 36 are installed at both ends of the second connecting rod 35. The guide pins 36 are parallel to the pin 34. The other end of the guide pin 36 passes through the second vertical plate 24 and is pressed to the other end of the workpiece. When the push rod of the second oil cylinder 31 is pushed out, the pin 34 moves inward to the second rib plate 13, which drives the second connecting rod 35 and the guide pin 36 to move. When it reaches the limit, it is pressed to the other end of the workpiece, thereby restricting the degree of freedom of axial movement of the workpiece.
[0015] The positioning unit 4 is positioned by the cooperation of the first limiting structure 2 and the second limiting structure 3, which restricts the degree of freedom of circumferential rotation and axial movement of the workpiece; the structure is simple and the operation is convenient; the use of a hydraulic cylinder as a control element can ensure that the machining process is not affected by external forces, the action is more precise, the clamping stability is higher, and the machining quality is higher.
[0016] This invention provides a hydraulic rotary clamping fixture for machining lock-type workpieces. The workpiece is clamped using a hydraulic cylinder, ensuring good workpiece positioning stability, high machining accuracy, and guaranteed machining quality. The fixture employs automated clamping, reducing human intervention and labor intensity. It also avoids positioning errors that may occur with manual clamping, guaranteeing product quality and increasing yield. The compact dual-station design saves time and effort, resulting in higher work efficiency. The positioning unit design of this invention has high versatility, adaptable to clamping various similar parts, offering high practicality, low operator training difficulty, high fixture utilization efficiency, and lower production costs.
[0017] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all modifications or improvements made without departing from the spirit and concept of the present invention are within the protection scope of the present invention.
Claims
1. A hydraulic rotary machining fixture for a lock-type workpiece machining center, characterized in that: It includes a support unit, and the flange plate of the support unit is provided with a positioning unit; the positioning unit includes a first limiting structure for circumferential positioning of the workpiece and a second limiting structure for axial positioning of the workpiece, and a first rib and a second rib are provided on one side of the flange plate of the support unit, and the first rib and the second rib are connected by a base plate.
2. The hydraulic rotary machining fixture for lock-type workpieces according to claim 1, characterized in that: The first limiting structure includes a first upright plate and a second upright plate fixed to the base plate. The first upright plate and the second upright plate are connected by a pull plate. The first upright plate is provided with a positioning pin, and the pull plate is provided with a limiting block. The first cylinder of the first limiting structure is installed on the base plate. The push rod end of the first cylinder is rotatably connected to one end of the pressure plate, and the middle part of the pressure plate is rotatably installed on the support member.
3. The hydraulic rotary machining fixture for lock-type workpieces according to claim 2, characterized in that: The second limiting structure includes a second hydraulic cylinder installed on the second rib plate. The second hydraulic cylinder is located below the bottom plate. The push rod of the second hydraulic cylinder passes through the second rib plate. A support is fixedly installed on the outside of the second rib plate.
4. The hydraulic rotary machining fixture for lock-type workpieces according to claim 3, characterized in that: A first connecting rod is installed in the middle of the support. The first connecting rod can swing on the support. The bottom end of the first connecting rod is fixed to the push rod of the second oil cylinder, and the top end of the first connecting rod is vertically connected to a pin.
5. The hydraulic rotary machining fixture for lock body workpieces according to claim 4, characterized in that: The other end of the pin is fixed to the midpoint of the second connecting rod, which is placed horizontally. Guide pins are installed at both ends of the second connecting rod, and the guide pins are parallel to the pin. The other end of the guide pin passes through the second vertical plate and is pressed to the other end of the workpiece.
6. The hydraulic rotary machining fixture for a lock-type workpiece machining center according to claim 5, characterized in that: The first limiting structure is provided in two sets.