一种轴承座加工用定心工装

Abstract

本实用新型公开了一种轴承座加工用定心工装，包括：机架、伸缩驱动源、升降轴、至少二个连杆、至少二个夹持臂和上压紧机构，所述机架上设有支撑面；所述伸缩驱动源安装在所述机架上；所述升降轴与所述伸缩驱动源的输出端连接，所述升降轴适于沿竖直方向滑动并穿过所述机架；所述连杆的一端铰接在所述升降轴上；所述夹持臂的下端部铰接在所述机架上，所述夹持臂的中间部与对应的所述连杆的另一端铰接；所述上压紧机构安装在所述机架上，所述上压紧机构设有一对压块，所述上压紧机构适于带动所述压块沿竖直方向移动以将工件压紧在所述支撑面上。它能够实现径向定心，并通过轴向压紧提供稳定夹持，适于轴承座外圆面和上端面的加工。

Claims

1. A centering jig for machining a bearing chock, characterized by, include: A frame (1) is provided with a support surface (11). Telescopic drive source (2), the telescopic drive source (2) is mounted on the frame (1); Lifting shaft (3), the lifting shaft (3) is connected to the output end of the telescopic drive source (2), the lifting shaft (3) is adapted to slide in the vertical direction and pass through the frame (1); At least two connecting rods (4), one end of which is hinged to the lifting shaft (3); At least two clamping arms (5), the lower end of the clamping arm (5) is hinged to the frame (1), and the middle part of the clamping arm (5) is hinged to the other end of the corresponding connecting rod (4); Upper pressing mechanism (6) is mounted on the frame (1). The upper pressing mechanism (6) is provided with a pair of pressing blocks (61). The upper pressing mechanism (6) is adapted to drive the pressing blocks (61) to move in the vertical direction to press the workpiece on the support surface (11). When the lifting shaft (3) moves upward, the connecting rod (4) drives the clamping arm (5) to rotate. The upper end of the clamping arm (5) swings outward to contact the inner circumferential surface of the workpiece, thereby radially centering and clamping the workpiece. At the same time, the pressure block (61) applies axial pressure to the top of the workpiece.

2. The centering fixture for machining bearing housings according to claim 1, characterized in that: The upper clamping mechanism (6) includes: A worm gear (62) is horizontally rotatably mounted on the frame (1); A pair of worm gears (63) are rotatably mounted on the frame (1) and mesh with the worm (62), and the worm gears (63) have a threaded hole at their center; A pair of guide rods (64) are vertically slidably mounted on the frame (1), and the lower part of the guide rods (64) is provided with a threaded section that mates with the threaded hole; The pressure block (61) is installed on the upper end of the corresponding guide rod (64).

3. The centering fixture for machining bearing housings according to claim 2, characterized in that: The guide rod (64) is provided with a guide groove (642) extending axially. The frame (1) has a guide hole that mates with the guide rod (64) and a guide protrusion that mates with the guide groove (642).

4. The centering fixture for machining bearing housings according to claim 2, characterized in that: The bottom surface of the pressure block (61) is provided with an elastic pad layer.

5. The centering fixture for machining bearing housings according to claim 1, characterized in that: The upper end of the clamping arm (5) is provided with a floating abutment mechanism, which includes an abutment block (72) hinged to the end of the clamping arm (5) and at least one elastic element (73) disposed between the clamping arm (5) and the abutment block (72).

6. The centering fixture for machining bearing housings according to claim 5, characterized in that: The contact surface of the contact block (72) is arc-shaped.

7. The centering fixture for machining bearing housings according to claim 1, characterized in that: It also includes a support base (8), which is disposed on the support surface (11).

8. The centering fixture for machining bearing housings according to claim 7, characterized in that: The support base (8) includes four sets of arc-shaped support blocks, which are spaced apart along the circumference and form a gap between adjacent support blocks.

9. The centering fixture for machining bearing housings according to claim 2, characterized in that: The upper clamping mechanism (6) also includes an operating handwheel (65), which is connected to the worm gear (62) in a transmission manner.

10. The centering fixture for machining bearing housings according to claim 1, characterized in that: The telescopic drive source (2) is a cylinder.

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