一种高精度可调式铰刀
By improving the adjustment structure of the reamer, the connection between the tapered adjustment block and the adjustment screw is stabilized, solving the problem of tool runout caused by the high requirements of thread pair machining in the existing technology, and achieving high-precision machining effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHENGZHOU DIAMOND PRECISION MFG
- Filing Date
- 2025-08-18
- Publication Date
- 2026-07-17
AI Technical Summary
The existing adjustable reamers have high requirements for the machining of threaded pairs, resulting in large runout of the tool body after expansion, which cannot meet the needs of high-precision machining.
The connection method between the tapered adjusting block and the adjusting screw has been changed to a threaded connection between the adjusting screw and the tool body. The tapered adjusting block is not threaded to the adjusting screw and is fixed by a retaining device to ensure consistent adjustment and stability and avoid uneven force distribution.
It reduces runout during tool body expansion, improves machining accuracy and adjustment stability, is suitable for high-precision machining, and reduces production difficulty and cost.
Smart Images
Figure CN224508597U_ABST
Abstract
Claims
1. A high-precision adjustable reamer, comprising a reamer body, one end of the reamer body being provided with an adjusting hole for mounting a blade, a tapered adjusting block and an adjusting screw being arranged in the adjusting hole, characterized in that, The adjusting hole is also provided with a backstop. The adjusting hole includes a tapered section that matches the structure of the tapered adjusting block and a round section for accommodating the backstop. The adjusting screw is threaded to the cutter body. The adjusting screw passes through the tapered adjusting block and presses the tapered adjusting block into the cutter body. The backstop is fixed on the adjusting screw so as to push the tapered adjusting block out of the cutter body when the adjusting screw is unscrewed from the cutter body.
2. A high-precision adjustable reamer according to claim 1, characterized in that, The tapered adjusting block is provided with a stepped hole, which includes a large-diameter hole section and a small-diameter hole section arranged coaxially. The adjusting screw includes a head and a threaded post connected coaxially. The threaded post passes through the small-diameter hole section and is threadedly connected to the cutter body. The head is located in the large-diameter hole section and is pressed against the bottom wall of the large-diameter hole section.
3. A high-precision adjustable reamer according to claim 2, characterized in that, The anti-reverse component is threadedly connected to the threaded post.
4. A high-precision adjustable reamer according to claim 3, characterized in that, The anti-reverse component is a nut.
5. A high-precision adjustable reamer according to any one of claims 2-4, characterized in that, The head is equipped with a tool interface.
6. A high-precision adjustable reamer according to claim 5, characterized in that The tool interface is a hexagonal interface.
7. A high-precision adjustable reamer according to claim 1 or 3 or 4, characterized in that, The inner diameter of the circular hole section is greater than the outer diameter of the anti-reverse component, and the length of the circular hole section in the direction of the cutter body axis is greater than the travel of the anti-reverse component in the direction of the cutter body axis.
8. The high-precision adjustable reamer according to claim 1 or 2, characterized in that, Both ends of the tapered adjusting block have chamfers.
9. The high-precision adjustable reamer according to claim 1, wherein, The blade body has multiple chip grooves evenly arranged in the circumferential direction. Each chip groove has a blade mounting groove on the same side of the groove wall, and the blade is welded into the blade mounting groove.
10. The high-precision adjustable reamer according to claim 1, wherein, The tapered hole section is a ground hole formed by grinding, and the round hole section is a turned hole formed by turning.