一种杆状零件的变形检测工装

Abstract

一种杆状零件的变形检测工装，涉及检测装置技术领域，包括底板，底板上对称设有两排定位板，两排定位板上开有定位孔，定位孔内贯穿设有定位针，两排定位板上的定位针的针尖相对设置，且指向杆状零件的轴线；定位板的一端连接固定台，固定台上设有夹具组件，夹具组件包括依次连接的夹具头、台阶结构和旋转杆，夹具头可开合以夹持杆状零件的一端；固定台中部设有弧形凹槽，弧形凹槽上设有第一弧形导轨；固定台上还设有可拆卸的固定块，固定块上设有第二弧形导轨，第一弧形导轨与第二弧形导轨配合形成环形导轨槽，用于限制台阶结构的径向位移。本实用新型通过机械限位与对称设置的可调定位针，实现快速、直观的变形检测，降低检测成本并提高效率。

Claims

1. A deformation detection tool for a rod-shaped part, comprising a base plate (1), characterized in that: Two rows of positioning plates (101) are symmetrically arranged on the base plate (1). Several positioning holes (102) are opened on the two rows of positioning plates (101). Positioning pins (5) are inserted through the positioning holes (102). The tips (501) of the positioning pins (5) on the two rows of positioning plates (101) are arranged opposite each other and point to the axis of the rod-shaped part (6). One end of the positioning plate (101) is connected to the fixed platform (3). The fixed platform (3) is provided with a clamp assembly (2). The clamp assembly (2) includes a clamp head (201), a step structure and a rotating rod (205) connected in sequence. The clamp head (201) can be opened and closed to clamp one end of the rod-shaped part (6). When the rotating rod (205) is rotated, the clamp head (201) and the clamped rod-shaped part (6) are driven to rotate around their own axis through the step structure. The fixed platform (3) has an arc-shaped groove in the middle, and a first arc-shaped guide rail (301) is provided on the arc-shaped groove; the fixed platform (3) is also provided with a detachable fixed block (4), and a second arc-shaped guide rail (401) is provided on the fixed block (4). The first arc-shaped guide rail (301) and the second arc-shaped guide rail (401) cooperate to form an annular guide rail groove. The annular guide rail groove is adapted to the step structure and is used to limit the radial displacement of the step structure.

2. The deformation detection tool for a rod-shaped part according to claim 1, characterized in that: The stepped structure includes a first disk (202), a second disk (203), and a third disk (204) arranged coaxially. The first disk (202) is fixedly connected to the second disk (203), and the third disk (204) can rotate independently relative to the first disk (202) and the second disk (203). Each disk is hollow and has a continuous internal thread of uniform specification on its inner wall. The tail of the clamping head (201) is provided with an external thread that matches the internal thread. It passes through the hollow part of the three disks through the threaded engagement, and the tail end of the clamping head (201) is provided with a sloped transmission structure. When the third disk (204) is rotated, the clamping head (201) is driven to move axially through the threaded engagement. The sloped transmission structure converts the axial movement into the radial opening and closing action of the clamping end. One end of the rotating rod (205) is coaxially fixedly connected to one side of the second disk (203).

3. The deformation detection tool for a rod-shaped part according to claim 2, characterized in that: The radial dimension of the second disk (203) is larger than that of the first disk (202) and the third disk (204), and the outer peripheral surface of the second disk (203) forms an axial step structure with the adjacent disk.

4. The deformation detection tool for a rod-shaped part according to claim 1, characterized in that: The clamp head (201) includes three clamping surfaces distributed at 120° to accommodate clamping rod-shaped parts (6) of different sizes.

5. The deformation detection tool for a rod-shaped part according to claim 1, characterized in that: The positioning pin (5) includes a pin tip (501), a middle cylinder (502) and a handheld part (503). The pin tip (501) is connected to the handheld part (503) through the middle cylinder (502). The size of the middle cylinder (502) is adapted to the size of the positioning hole (102). The handheld part (503) has a hexagonal prism structure.

6. The deformation detection tool for a rod-shaped part according to claim 5, characterized in that: The middle tube part (502) of the positioning needle (5) is connected with the positioning hole (102) through thread, and the rotating hand holding part (503) can adjust the distance between the needle tip (501) and the axis of the rod-shaped part (6).

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