Clamping device for ball nut grinding

Abstract

The utility model discloses a clamping device for ball nut grinding, and relates to the technical field of machining equipment. The inner taper sleeve is arranged in the clamp body; a thread groove is formed in the left side ring wall of the inner taper sleeve; a conical groove is formed in the right side ring wall of the inner taper sleeve; the pulling and pressing rod is screwed and inserted into the thread groove through threads; the elastic sleeve is inserted into the conical groove; the clamp body is sleeved with the pressing nut in a screwed mode through threads, and the right end of the pressing nut is clamped on the elastic sleeve. The positioning shaft penetrates through the compression nut and then is inserted into the part, and the positioning shaft is arranged on the right side of the elastic sleeve; and correction of each part is not needed, the correction procedure is directly cancelled, the production efficiency is greatly improved, one-person multi-machine operation can be achieved, the labor cost is reduced, and the stability of the product quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of machining equipment, and particularly relates to a clamping device for grinding ball nuts. Background Art

[0002] Ball screw pairs belong to precision parts, so there are high requirements for the concentricity of ball nuts on ball screws. Usually, when machining ball nuts, they need to be clamped on a four-jaw chuck, and then a dial indicator is used to correct the runout of the outer circle of the ball nut. Machining can only be carried out when the runout is less than 0.03 mm. In this way, the machining efficiency is low, the correction takes a long time, and each nut needs to be corrected during machining. It is impossible for one person to operate multiple machine tools, and the labor cost is high. Content of the Utility Model

[0003] The purpose of the utility model is to provide a clamping device for grinding ball nuts with a simple structure, reasonable design and convenient use, aiming at the defects and deficiencies of the prior art. It eliminates the need for calibration of each part, directly cancels the calibration process, greatly improves the production efficiency, enables one person to operate multiple machines, reduces the labor cost, and improves the stability of product quality.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is: It includes:

[0005] An inner cone sleeve, which is arranged inside the fixture body; a thread groove is provided on the left circumferential wall of the inner cone sleeve; a tapered groove is provided on the right circumferential wall of the inner cone sleeve;

[0006] A tension and compression rod, which is screwed and inserted into the thread groove;

[0007] An elastic sleeve, which is inserted into the tapered groove;

[0008] A compression nut, which is screwed and sleeved on the fixture body, and the right end of the compression nut is clamped on the elastic sleeve;

[0009] A positioning shaft, which passes through the compression nut and is inserted into the part, and the positioning shaft is arranged on the right side of the elastic sleeve;

[0010] Through the above technical solution design, when machining ball nuts of different specifications, only the corresponding elastic sleeve needs to be replaced, and then the compression nut is pushed and pulled to complete the clamping of the ball nut.

[0011] As a further improvement of the utility model, the diameter of the tapered groove increases sequentially from left to right, and the diameter of the outer circumferential wall of the elastic sleeve increases sequentially from left to right;

[0012] Through the above technical solution design, the elastic sleeve is matched with the inner cone sleeve.

[0013] Working principle of the present utility model: Only need to pre-process the fixture body, compression nut and inner conical sleeve, with the runout less than 0.01 mm. Then, for machining parts of different specifications, only need to replace the corresponding elastic sleeve, and then push and pull the compression nut to complete the clamping of the parts, and the runout can be controlled within 0.01 mm; There is no need to calibrate each part, directly eliminating the calibration process, greatly improving the production efficiency, enabling one person to operate multiple machines, reducing the labor cost, and improving the stability of product quality.

[0014] After adopting the above structure, the beneficial effects of the present utility model are as follows:

[0015] 1. There is no need to calibrate each part, directly eliminating the calibration process, greatly improving the production efficiency, enabling one person to operate multiple machines, reducing the labor cost, and improving the stability of product quality. Description of the drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0017] Figure 1 It is a structural schematic diagram of the present utility model.

[0018] Figure 2 It is a connection structural schematic diagram of the fixture body, inner conical sleeve, elastic sleeve and compression nut in the present utility model.

[0019] Figure 3 It is a structural schematic diagram of the compression nut in the present utility model.

[0020] Description of the reference numerals in the drawings:

[0021] Inner conical sleeve 1, thread groove 1-1, conical groove 1-2, fixture body 2, tension rod 3, elastic sleeve 4, compression nut 5, positioning shaft 6, part 7. Specific implementation manners

[0022] The following further describes the present utility model with reference to the drawings.

[0023] Embodiment 1:

[0024] Please refer to Figures 1 - 3 , this embodiment includes:

[0025] Inner cone sleeve 1, the inner cone sleeve 1 is arranged inside the fixture 2; and a threaded groove 1-1 is provided on the left circumferential wall of the inner cone sleeve 1; a tapered groove 1-2 is provided on the right circumferential wall of the inner cone sleeve 1; the groove diameter of the tapered groove 1-2 is arranged to increase sequentially from left to right;

[0026] Tension-compression rod 3, the tension-compression rod 3 is screwed and inserted into the threaded groove 1-1;

[0027] Elastic sleeve 4, the elastic sleeve 4 is inserted into the tapered groove 1-2; the diameter of the outer circumferential wall of the elastic sleeve 4 is arranged to increase sequentially from left to right;

[0028] Compression nut 5, the compression nut 5 is screwed and sleeved on the fixture 2, and the right end of the compression nut 5 is clamped on the elastic sleeve 4;

[0029] Positioning shaft 6, the positioning shaft 6 passes through the compression nut 5 and is inserted into the part 7, and the positioning shaft 6 is arranged on the right side of the elastic sleeve 4;

[0030] With the above design, when machining ball nuts of different specifications, only the corresponding elastic sleeve 4 needs to be replaced, and then the compression nut 5 is pushed and pulled to complete the clamping of the ball nut.

[0031] When using the present utility model, only the fixture 2, the compression nut 5, and the inner cone sleeve 1 need to be processed in advance with a runout less than 0.01 mm. Then, when machining parts 7 of different specifications, only the corresponding elastic sleeve 4 needs to be replaced, and then the compression nut 5 is pushed and pulled to complete the clamping of the part 7, and the runout can be controlled within 0.01 mm; there is no need to correct each part 7, the correction process is directly cancelled, the production efficiency is greatly improved, one person can operate multiple machines, the labor cost is reduced, and the stability of product quality is improved.

[0032] After adopting the above structure, the beneficial effects of this specific embodiment are as follows:

[0033] 1. There is no need to correct each part 7, the correction process is directly cancelled, the production efficiency is greatly improved, one person can operate multiple machines, the labor cost is reduced, and the stability of product quality is improved.

[0034] The above is only used to illustrate the technical solution of the present utility model and not to limit it. Any other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solution of the present utility model shall be covered by the scope of the claims of the present utility model as long as they do not depart from the spirit and scope of the technical solution of the present utility model.

Claims

1. A clamping device for grinding a ball nut, characterized in that: It includes: An inner tapered sleeve (1) which is arranged inside a jig body (2); a threaded groove (1-1) is formed on the left circumferential wall of the inner tapered sleeve (1); a tapered groove (1-2) is formed on the right circumferential wall of the inner tapered sleeve (1); A tension and compression rod (3) which is screwed and inserted into the threaded groove (1-1); An elastic sleeve (4) which is inserted into the tapered groove (1-2); A compression nut (5) which is screwed and sleeved on the jig body (2), and the right end of the compression nut (5) is clamped on the elastic sleeve (4); A positioning shaft (6) which passes through the compression nut (5) and is inserted into a part (7), and the positioning shaft (6) is arranged on the right side of the elastic sleeve (4).

2. The clamping device for grinding a ball nut according to claim 1, wherein: The groove diameter of the tapered groove (1-2) is sequentially increased from left to right, and the diameter of the outer circumferential wall of the elastic sleeve (4) is sequentially increased from left to right.

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