一种异形工件免中心打孔车床夹具
By designing a lathe fixture for irregularly shaped workpieces that eliminates the need for center drilling, and utilizing the alignment and clamping grooves of components such as chucks, grippers, and positioning pins, rapid positioning and clamping of irregularly shaped workpieces are achieved. This solves the problem of low processing efficiency for irregularly shaped workpieces in existing technologies, and improves processing efficiency and ease of operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUHAN HUAPEI POWER TECH CO LTD
- Filing Date
- 2025-07-23
- Publication Date
- 2026-07-17
AI Technical Summary
The lack of corresponding lathe fixtures for machining irregularly shaped workpieces leads to the need for center drilling and clamping, resulting in low efficiency.
A lathe fixture for irregularly shaped workpieces without center drilling was designed. It adopts a chuck, clamping jaws, positioning pins and pressure pins. Through the cooperation of the alignment groove and the pressure groove, it can achieve rapid positioning and clamping without center hole. The spring drive structure simplifies the operation.
It enables rapid positioning and clamping of irregularly shaped workpieces, reduces operational difficulty, improves processing efficiency, facilitates component replacement and maintenance, and ensures coaxiality and dynamic balance during rotary machining.
Smart Images
Figure CN224508488U_ABST
Abstract
Claims
1. A lathe fixture for irregularly shaped workpieces without center drilling, comprising a chuck (1), clamping jaws (3), and positioning pins (5), characterized in that: The chuck (1) is detachably mounted with a pressure claw (3) and a fixing plate (4) by bolts on its outer side. The fixing plate (4) is detachably connected to the positioning post (5) by bolts. The side of the positioning post (5) facing the pressure claw (3) is designed with an opening. The upper part of the positioning post (5) near the fixing plate (4) is provided with a first alignment groove (6). The upper part of the positioning post (5) away from the fixing plate (4) is provided with a second alignment groove (7). The fixing post (14) is welded to the end of the positioning post (5) away from the fixing plate (4). The fixing post (14) is provided with a setting at the end away from the positioning post (5). There is a detachable clamping block (9), and a pressure pin assembly (11) is provided between the clamping block (9) and the fixed column (14). The clamping block (9) has an active groove (10) inside, and the fixed column (14) has a pressure pin groove (12) inside. The fixed column (14) and the clamping block (9) both have a positioning pin through groove (13) inside. The first positioning pin (8) is inserted into the first alignment groove (6). A non-shaped workpiece (15) is provided between the clamping claw (3) and the positioning column (5). The side of the clamping claw (3) facing the non-shaped workpiece (15) has a pressure groove (16).
2. The special-shaped workpiece center-free punching lathe fixture according to claim 1, characterized in that: The top of the chuck (1) is located on both sides of the pressure claw (3) and counterweights (2) are detachably installed. The chuck (1) and the two counterweights (2) together form a "T" shaped structure.
3. The special-shaped workpiece center-free punching lathe fixture according to claim 1, characterized in that: The pressing pin assembly (11) includes a movable block (1102). A spring seat (1103) and a second positioning pin (1106) are fixedly installed on the side of the movable block (1102) near the first positioning pin (8). A pressing pin rod (1104) is fixedly installed on the side of the spring seat (1103) away from the movable block (1102). A spring (1105) is provided between the spring seat (1103) and the pressing pin groove (12). The two ends of the spring (1105) are fixedly connected to the spring seat (1103) and the fixed post (14) respectively. A guide rod (1101) is fixedly installed on the end of the movable block (1102) away from the first positioning pin (8).
4. The special-shaped workpiece center-free punching lathe fixture according to claim 3, characterized in that: The guide rod (1101), movable block (1102), pressure pin (1104), and second positioning pin (1106) together form an "h" shaped structure. The movable block (1102) is located inside the movable groove (10). The pressure pin (1104) and spring (1105) are both located inside the pressure pin groove (12). The pressure pin (1104) passes through the pressure pin groove (12) and extends to the outside of the fixed column (14). The side of the pressure pin (1104) near the irregular workpiece (15) has an inclined part (1107). The inclined part (1107) is in contact with the irregular workpiece (15). The guide rod (1101) passes through the clamping block (9) and extends to the outside of the clamping block (9). The second positioning pin (1106) is plugged into the positioning pin through groove (13).
5. The profiled workpiece center-free punching lathe fixture according to claim 3, characterized in that: The first alignment groove (6) and the second alignment groove (7) both have a "C" shaped cross section. The first alignment groove (6) and the second alignment groove (7) have the same shape. The second positioning pin (1106) and the first positioning pin (8) are located on the same horizontal line.
6. The profiled workpiece center-free punching lathe fixture according to claim 1, characterized in that: The cross-section of the pressure groove (16) is in the shape of a "C". The pressure groove (16) is adapted to the end of the irregular workpiece (15). The two ends of the irregular workpiece (15) have the same structure. The two ends of the irregular workpiece (15) are respectively connected to the first alignment groove (6) and the second alignment groove (7).
7. The profiled workpiece center-free punching lathe fixture according to claim 1, characterized in that: The center lines of the chuck (1), positioning post (5), fixing post (14) and clamping block (9) are located on the same horizontal line. The fixing post (14) and clamping block (9) are detachably connected by bolts. The movable groove (10) is interconnected with the pressure pin groove (12) and the positioning pin through groove (13). The cross sections of the movable groove (10), the pressure pin groove (12) and the positioning pin through groove (13) together form an "h" shaped structure.