Special clamp for grinding internal thread of ball screw nut
A special fixture and internal thread technology, applied in the field of mechanical processing, can solve the problems of time-consuming and laborious calibration work, difficulty in meeting requirements, difficulty in matching nuts, etc., and achieve the effect of convenient use
Inactive Publication Date: 2011-05-11
JIANGSU RIGHT MASCH GRP CO LTD
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Problems solved by technology
However, the calibration work is not only time-consuming and laborious, but also difficult to meet the requirements. The technical level of each grinder worker is also different. It is difficult to ensure that the processed nuts are consistent, so that the accuracy of the nuts cannot be guaranteed.
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Embodiment Construction
[0013] Such as figure 1 As shown, the special fixture for grinding ball screw nut internal thread of the present invention is provided with an adjusting nut 1, a tensioning sleeve 3 and a hollow tensioning mandrel 2, wherein the tensioning mandrel 2 is provided with a positive tooth external thread , the tensioning sleeve 3 is provided with anti-thread external threads, and the adjusting nut 1 has internal threads, the left half of which is a positive thread, and the right half is a reverse thread, so that when the adjusting nut 1 is turned, the tensioning sleeve 3 and the tensioning core can be driven Relative movement between axis 2. There is a combined conical surface between the tensioning sleeve 3 and the tensioning mandrel 2, which is convenient for accurate positioning. The conical surface of the tensioning mandrel 2 is provided with 5 evenly distributed opening grooves, which can be used to clamp and loosen workpieces like claws.
[0014] The special fixture for gri...
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The invention discloses a special clamp for grinding an internal thread of a ball screw nut. The clamp is provided with an adjusting nut, a tightening sheath and a hollow tightening central spindle, wherein the tightening central spindle is provided with an occluded external thread; the tightening sheath is provided with a crossbited external thread; and the adjusting nut is provided with an internal thread and is provided with an occluded thread at the left half part and a crossbited thread at the right half part so that the adjusting nut is rotated to drive the tightening sheath and the tightening central spindle to relatively move. The invention has the following advantages that the concentricity of the inner cavity of the tightening central spindle is ensured when the clamp is manufactured, meanwhile, the central spindle line of the clamp is ensured to be vertical to the end surface of a headstock of a machine tool when the clamp is installed on the machine tool. Therefore, the clamp is convenient to use by only putting a nut blank into the clamp and rotatably adjusting the tightening of the nut, can ensure that the center of a workpiece is concentric with the center of the headstock of the machine tool and the central line of the workpiece is vertical to the end surface of the headstock, need no repeated correction by a micrometer gauge, save the workhours and improve themachining precision of the nut.
Description
technical field [0001] The invention relates to a fixture, in particular to a fixture for grinding the internal thread of a ball screw nut, which belongs to the field of mechanical processing. Background technique [0002] In the existing ball screw manufacturing process of rolling functional parts, the internal thread of the ball screw nut is processed on the nut grinding machine. First, the grinder worker clamps the workpiece to the machine tool clamped by the three-jaw chuck. Then use the measuring tool to correct the workpiece. It is necessary to make the center of the workpiece concentric with the center of the headstock of the machine tool, and make the centerline of the workpiece perpendicular to the end face of the headstock so that the ground nut meets the requirements. However, the calibration work is not only time-consuming and laborious, but also difficult to meet the requirements. The technical level of each grinder worker is also different, and it is difficult ...
Claims
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IPC IPC(8): B23Q3/00B23G1/36
Inventor 周建伟顾文德吕慧芳
Owner JIANGSU RIGHT MASCH GRP CO LTD