Positioning tool for nut machining

Abstract

The utility model discloses a positioning tool for nut machining, including fixed column, positioning mechanism and clamping mechanism, be provided with positioning mechanism and clamping mechanism on the fixed column, the positioning mechanism is located above the clamping mechanism, is set up with the placing groove on the fixed column, this positioning tool for nut machining adjusts the clamping block spacing through bidirectional screw rod, can adapt to the nut of different width of opposite side, through replacing the replaceable fixed cover of different inner diameter, can adapt to the nut of different thread hole diameter, and this modular design has improved the versatility of tooling greatly, has reduced the cost of special tooling that needs to be equipped for different specifications nut, and the clamping mechanism adopts worm and worm gear drive, has the self -locking characteristic, can prevent reverse rotation effectively after compacting, guarantees the safe and reliable of processing process, through the cooperation of positioning mechanism and clamping mechanism, can fix and position the nut of different size, convenient operation can satisfy the daily needs of the user.

Description

Technical Field

[0001] This utility model relates to the field of nut processing technology, specifically a positioning fixture for nut processing. Background Technology

[0002] A positioning fixture for nut machining is a specialized process equipment used in mechanical manufacturing to quickly and accurately fix and position nut blanks or semi-finished products. It is widely used on CNC or conventional machine tools for drilling, tapping, milling, and turning. The core function of this fixture is to ensure that each nut maintains a precise and consistent position and orientation during machining, thereby guaranteeing the stability of product quality in mass production and significantly improving machining efficiency. In modern nut manufacturing enterprises, the use of specialized positioning fixtures is a key link in achieving automated, intelligent, and efficient production. It is not only a "stabilizer" for ensuring product quality but also an important technical means to enhance the core competitiveness of enterprises and reduce overall production costs. However, existing positioning fixtures for nut machining still have certain shortcomings.

[0003] While traditional locating fixtures for nut machining can be used effectively, they are typically rigid, with each fixture only suitable for a specific nut size. Frequent fixture changes are required when machining different nuts, leading to long changeover times, low production efficiency, and high fixture management and manufacturing costs. Many traditional fixtures require multiple operations to achieve positioning and clamping, resulting in low efficiency. Furthermore, in vibration-prone machining environments, ordinary threaded parts may loosen, posing safety hazards and frequently causing problems for users. Utility Model Content

[0004] The purpose of this invention is to provide a positioning fixture for nut processing, addressing the problems mentioned in the background section. Traditional positioning fixtures are typically rigid, with one set of clamps only suitable for one specific nut specification. Frequent changes to the entire fixture are required when processing different nuts, resulting in long changeover times, low production efficiency, and high fixture management and manufacturing costs. Many traditional fixtures require multiple operations to complete positioning and clamping, leading to low efficiency. Furthermore, in vibration-prone processing environments, ordinary threaded pairs may loosen, posing safety hazards and frequently troubling users.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a positioning fixture for nut processing, comprising a fixed column, a positioning mechanism, and a clamping mechanism. The fixed column is provided with the positioning mechanism and the clamping mechanism. The positioning mechanism is located above the clamping mechanism. The positioning mechanism includes a first sliding groove, a connecting rod, a fixed plate, a second sliding groove, a slider, a two-way lead screw, a clamping block, a small internal hexagonal screw, a tension spring, and a replaceable fixing sleeve.

[0006] The clamping mechanism includes a worm gear, a worm wheel, a rotating rod, a fixed plate, an Archimedean spiral groove, and a large internal hexagon.

[0007] The fixed column has a placement groove, and the placement groove has three sets of replaceable fixing sleeves. The fixed column has a first sliding groove, and the first sliding groove has a connecting rod inside. The connecting rod is slidably connected to the first sliding groove.

[0008] As a preferred technical solution of this utility model, a fixing plate is fixedly installed on the upper top surface of the connecting rod, a second sliding groove is provided on the fixing plate, two sets of sliders are provided inside the second sliding groove, and a bidirectional lead screw is provided inside the second sliding groove that is threadedly connected to the slider.

[0009] As a preferred embodiment of this utility model, the bidirectional lead screw and the fixed plate are connected by a bearing. A small internal hexagon is fixedly installed on the bidirectional lead screw, and a clamping block is fixedly installed on the slider. A tension spring is provided inside the first slide groove. One end of the tension spring is fixedly installed on the fixed column, and the other end of the tension spring is fixedly installed on the connecting rod.

[0010] As a preferred embodiment of this utility model, a worm gear is provided inside the fixing column, the worm gear is connected to the fixing column by a bearing, and a large internal hexagon is fixedly installed on the fixing column, the large internal hexagon being located outside the fixing column.

[0011] As a preferred embodiment of this utility model, a worm gear is provided inside the fixed column, the worm gear meshes with a worm, and a rotating rod is fixedly installed on the worm gear, with the bottom of the rotating rod rotatably connected to the fixed column.

[0012] As a preferred technical solution of this utility model, a fixing plate is fixedly installed on the upper top surface of the rotating rod, and an Archimedes spiral groove is formed on the upper top surface of the fixing plate. The Archimedes spiral groove is used in conjunction with the lower part of the connecting rod.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This positioning fixture for nut processing can adapt to nuts with different opposite widths by adjusting the spacing of the clamping blocks through a bidirectional screw. By replacing the replaceable fixing sleeves with different inner diameters, it can adapt to nuts with different thread hole diameters. This modular design greatly improves the versatility of the fixture and reduces the cost of equipping special fixtures for different specifications of nuts. The clamping mechanism adopts worm gear transmission and has self-locking characteristics, which can effectively prevent reverse rotation after clamping, ensuring the safety and reliability of the processing process. Through the combined use of the positioning mechanism and the clamping mechanism, nuts of different sizes can be fixed and positioned. The operation is convenient and can meet the daily needs of users. Attached Figure Description

[0014] Figure 1This is a front-view three-dimensional structural schematic diagram of the present invention;

[0015] Figure 2 This is a schematic diagram of the main view of the positioning mechanism of this utility model, broken down into its components.

[0016] Figure 3 This is a schematic diagram of the main structure of the clamping mechanism of this utility model.

[0017] In the diagram: 1. Fixed column; 2. Positioning mechanism; 201. First slide groove; 202. Connecting rod; 203. Fixed plate; 204. Second slide groove; 205. Slider; 206. Two-way lead screw; 207. Clamping block; 208. Small internal hexagon; 209. Tension spring; 210. Replaceable fixing sleeve; 3. Clamping mechanism; 301. Worm gear; 302. Worm wheel; 303. Rotating rod; 304. Fixed plate; 305. Archimedes spiral groove; 306. Large internal hexagon. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-3 This utility model provides a technical solution: a positioning fixture for nut processing, including a fixed column 1, a positioning mechanism 2, and a clamping mechanism 3. The fixed column 1 is provided with the positioning mechanism 2 and the clamping mechanism 3. The positioning mechanism 2 is located above the clamping mechanism 3. The positioning mechanism 2 includes a first slide groove 201, a connecting rod 202, a fixing plate 203, a second slide groove 204, a slider 205, a bidirectional lead screw 206, a clamping block 207, a small internal hexagon 208, a tension spring 209, and a replaceable fixing sleeve 210.

[0020] The clamping mechanism 3 includes a worm gear 301, a worm wheel 302, a rotating rod 303, a fixed plate 304, an Archimedes spiral groove 305, and a large internal hexagon 306;

[0021] The fixed column 1 has a placement groove, and the placement groove has three sets of replaceable fixing sleeves 210. The fixed column 1 has a first sliding groove 201, and the first sliding groove 201 has a connecting rod 202 inside. The connecting rod 202 and the first sliding groove 201 are slidably connected.

[0022] A fixing plate 203 is fixedly installed on the top surface of the connecting rod 202. A second slide groove 204 is provided on the fixing plate 203. Two sets of sliders 205 are provided inside the second slide groove 204. A bidirectional lead screw 206 is threadedly connected to the sliders 205 inside the second slide groove 204.

[0023] The bidirectional lead screw 206 is connected to the fixed plate 203 by a bearing. A small internal hexagon 208 is fixedly installed on the bidirectional lead screw 206. A clamping block 207 is fixedly installed on the slider 205. A tension spring 209 is provided inside the first slide groove 201. One end of the tension spring 209 is fixedly installed on the fixed column 1, and the other end of the tension spring 209 is fixedly installed on the connecting rod 202.

[0024] The fixed column 1 has a worm gear 301 inside, which is connected to the fixed column 1 by a bearing. A large internal hexagon 306 is fixedly installed on the fixed column 1, and the large internal hexagon 306 is located on the outside of the fixed column 1.

[0025] The fixed column 1 is equipped with a worm gear 302, which meshes with the worm 301. A rotating rod 303 is fixedly installed on the worm gear 302, and the bottom of the rotating rod 303 is rotatably connected to the fixed column 1.

[0026] A fixing plate 304 is fixedly installed on the top surface of the rotating rod 303. An Archimedes spiral groove 305 is opened on the top surface of the fixing plate 304. The Archimedes spiral groove 305 is used in conjunction with the lower part of the connecting rod 202.

[0027] Working principle: When using a positioning fixture for nut processing, the operator first uses a hex wrench to rotate the small internal hexagon 208, driving the double-acting screw 206 to rotate. The rotation of the double-acting screw 206 drives the two sets of sliders 205 on it to move in opposite directions within the second slide groove 204, thereby adjusting the spacing between the clamping blocks 207 installed on the sliders 205 to adapt to the radial positioning requirements of nuts of different sizes. Then, according to the shape and size of the nut, the replaceable fixing sleeve 210 is replaced with the corresponding shape and size, and the nut is placed in the support area formed by the three replaceable fixing sleeves 210.

[0028] The operator then uses a wrench to turn the large hexagonal socket 306, driving the worm gear 301 to rotate. The worm gear 301 drives the worm wheel 302, which meshes with it, to rotate. This causes the rotating rod 303 fixed on the worm wheel 302 and the fixed plate 304 to rotate together. The top surface of the fixed plate 304 has an Archimedean spiral groove 305. When the fixed plate 304 rotates, the Archimedean spiral groove 305 interacts with the lower end of the connecting rod 202, converting the rotational motion of the fixed plate 304 into the horizontal movement of the connecting rod 202. This causes the three sets of positioning mechanisms 2 to move inward, thereby causing the three sets of clamping blocks 207 to position the nut, ultimately pressing the nut stably onto the replaceable fixing sleeve 210, completing the clamping and positioning. At this time, the tension spring 209 is in a stretched state, providing a rebound force for subsequent release of the clamp. When it is necessary to remove the nut, the large internal hexagon 306 is rotated in the opposite direction. Under the action of the rebound force of the tension spring 209, the connecting rod 202 drives the positioning mechanism 2 to move outward, loosening the nut, thereby completing a series of tasks. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0029] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A positioning fixture for nut processing, comprising a fixed post (1), a positioning mechanism (2), and a clamping mechanism (3), wherein the fixed post (1) is provided with the positioning mechanism (2) and the clamping mechanism (3), and the positioning mechanism (2) is located above the clamping mechanism (3); characterized in that: The positioning mechanism (2) includes a first slide groove (201), a connecting rod (202), a fixing plate (203), a second slide groove (204), a slider (205), a two-way lead screw (206), a clamping block (207), a small internal hexagon (208), a tension spring (209), and a replaceable fixing sleeve (210); The clamping mechanism (3) includes a worm (301), a worm wheel (302), a rotating rod (303), a fixed plate (304), an Archimedes spiral groove (305), and a large internal hexagon (306); The fixed column (1) is provided with a placement groove, and the placement groove is provided with three sets of replaceable fixing sleeves (210). The fixed column (1) is provided with a first sliding groove (201), and the first sliding groove (201) is provided with a connecting rod (202). The connecting rod (202) and the first sliding groove (201) are slidably connected.

2. The positioning fixture for nut machining according to claim 1, characterized in that, A fixing plate (203) is fixedly installed on the top surface of the connecting rod (202). A second sliding groove (204) is provided on the fixing plate (203). Two sets of sliders (205) are provided inside the second sliding groove (204). A bidirectional lead screw (206) is threadedly connected to the sliders (205) inside the second sliding groove (204).

3. The positioning fixture for nut machining according to claim 2, characterized in that, The bidirectional lead screw (206) is connected to the fixed plate (203) by a bearing. A small internal hexagon (208) is fixedly installed on the bidirectional lead screw (206). A clamping block (207) is fixedly installed on the slider (205). A tension spring (209) is provided inside the first slide groove (201). One end of the tension spring (209) is fixedly installed on the fixed column (1), and the other end of the tension spring (209) is fixedly installed on the connecting rod (202).

4. A positioning fixture for nut machining according to claim 3, characterized in that, The fixed column (1) is provided with a worm gear (301) inside. The worm gear (301) is connected to the fixed column (1) by a bearing. A large internal hexagon (306) is fixedly installed on the fixed column (1) and the large internal hexagon (306) is located outside the fixed column (1).

5. A positioning fixture for nut machining according to claim 4, characterized in that, The fixed column (1) is provided with a worm gear (302) inside, which meshes with the worm (301). A rotating rod (303) is fixedly installed on the worm gear (302), and the bottom of the rotating rod (303) is rotatably connected to the fixed column (1).

6. A positioning fixture for nut machining according to claim 5, characterized in that, A fixing plate (304) is fixedly installed on the top surface of the rotating rod (303). An Archimedes spiral groove (305) is opened on the top surface of the fixing plate (304). The Archimedes spiral groove (305) is used in conjunction with the lower part of the connecting rod (202).

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