Positioning device for screw tap production

Abstract

The utility model discloses a positioning device for screw tap production, which relates to the technical field of coating clamps, and comprises a base, a plurality of rotating seats are uniformly distributed above the base along the circumferential direction, the outer side of a gear is fixedly connected with the gear, a plurality of arc-shaped clamping plates are uniformly distributed at the top ends of the rotating seats along the circumferential direction, and the arc-shaped clamping plates are fixedly connected with the rotating seats. A plurality of arc-shaped clamping plates are arranged on the base and form a cylindrical clamping part, the arc-shaped clamping plates are in sliding connection with the rotating seat, wedge-shaped blocks are fixedly connected to the outer sides of the arc-shaped clamping plates in the length direction of the arc-shaped clamping plates, a height-adjustable movable frame is arranged above the base, and a lantern ring is rotationally connected to the position, corresponding to the base, of the movable frame; the lantern ring is connected to the outer side of the arc-shaped clamping plate in a sleeving mode, and the arc-shaped clamping plate acts on the wedge-shaped block and is used for controlling the barrel-shaped clamping part to expand and contract. According to the positioning device for screw tap production, a screw tap can be positioned, and the situation that the coating effect is affected by shaking of the screw tap is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of coating fixtures, in particular to a positioning device for tap production. Background Technique

[0002] In the PVD coating process, positioning is a key step, which ensures that the coating can be accurately deposited at the predetermined position of the workpiece.

[0003] The current tap positioning device usually adopts a turntable design. A plurality of rotating seats with self-rotating functions are evenly distributed on the edge of the turntable. A limiting cylinder is fixed on the top of each rotating seat to carry the workpiece to be coated. Gears are installed on the outside of the rotating seats, and these gears are engaged with the fixed racks or gears inside the coating equipment, so that while the turntable rotates as a whole, each limiting cylinder can also rotate independently to improve the coating uniformity.

[0004] However, since the tap is only placed in the limiting cylinder and the diameter of the limiting cylinder is usually larger than that of the tap, during the coating process, the self-rotation and revolution of the limiting cylinder will cause the tap to shake, affecting the coating effect.

[0005] Therefore, it is necessary to propose a positioning device for tap production to solve the above problems. Content of the Utility Model

[0006] (I) Technical Problems to be Solved

[0007] The purpose of the utility model is to provide a positioning device for tap production to solve the problem that the existing PVD coating positioning device is prone to shaking during the coating process, which affects the coating effect as mentioned in the above background technique.

[0008] (II) Technical Solutions

[0009] To achieve the above purpose, the utility model is realized through the following technical solutions: A positioning device for tap production, including a base, a plurality of rotating seats are evenly arranged along the circumference above the base, gears are fixedly connected to the outside of the rotating seats, a plurality of arc-shaped clamping plates are evenly distributed along the circumference at the top of the rotating seats, and the plurality of arc-shaped clamping plates form a cylindrical clamping part. The arc-shaped clamping plates are slidably connected to the rotating seats. A wedge block is fixedly connected to the outside of the arc-shaped clamping plate along its length direction. An adjustable-height movable frame is arranged above the base. A collar is rotatably connected to a position corresponding to the base of the movable frame. The collar is sleeved on the outside of the arc-shaped clamping plate. The arc-shaped clamping plate acts on the wedge block to control the expansion and contraction of the cylindrical clamping part.

[0010] Preferably, three arc-shaped clamping plates are provided at the top of each rotating seat.

[0011] Preferably, a T-shaped chute is radially formed above the rotating base. There are multiple T-shaped chutes. The bottom end of the arc-shaped clamping plate is fixedly connected with a T-shaped slider adapted to the T-shaped chute. The arc-shaped clamping plate is slidably connected to the rotating base through the T-shaped slider.

[0012] Preferably, a limiting groove is formed at a position corresponding to the wedge-shaped block on the collar.

[0013] Preferably, the cross-section of the wedge-shaped block gradually increases from top to bottom.

[0014] Preferably, a threaded cylinder is fixedly connected to the top end of the base. A bolt passes through a position corresponding to the threaded cylinder in the middle of the movable frame. The bolt is threadedly connected to the threaded cylinder.

[0015] Preferably, there are multiple threaded cylinders, and the multiple threaded cylinders are evenly distributed along the circumference of the base.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, the present utility model provides a positioning device for tap production, having the following beneficial effects:

[0018] 1. For the positioning device for tap production, by providing multiple arc-shaped clamping plates to form a cylindrical clamping part and sleeving a collar for controlling its expansion and contraction on the outside, the tap placed therein can be clamped and fixed, preventing it from shaking during the coating process and affecting the coating effect.

[0019] 2. For the positioning device for tap production, by providing a movable frame to limit the height of multiple collars, the clamping and fixing of multiple taps can be achieved by adjusting the height of the movable frame, improving the clamping efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a three-dimensional schematic diagram of the structure of the present utility model;

[0021] Figure 2 is a three-dimensional schematic diagram of the cylindrical clamping part of the present utility model;

[0022] Figure 3 is a cross-sectional schematic diagram of the cylindrical clamping part of the present utility model.

[0023] In the figure: 1, movable frame; 2, base; 3, bolt; 4, collar; 5, threaded cylinder; 6, wedge-shaped block; 7, arc-shaped clamping plate; 8, T-shaped slider; 9, gear; 10, rotating base; 11, limiting groove; 12, T-shaped chute. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0025] Please refer to Figures 1-3 As shown, a positioning device for tap production includes a base 2. A plurality of rotating seats 10 are evenly arranged along the circumference above the base 2. A gear 9 is fixedly connected to the outside of the rotating seat 10. A plurality of arc-shaped clamping plates 7 are evenly distributed along the circumference at the top of the rotating seat 10. The plurality of arc-shaped clamping plates 7 form a cylindrical clamping portion. The arc-shaped clamping plate 7 is slidably connected to the rotating seat 10. A wedge block 6 is fixedly connected to the outside of the arc-shaped clamping plate 7 along its length direction. An adjustable-height movable frame 1 is provided above the base 2. A collar 4 is rotatably connected to a position corresponding to the base 2 on the movable frame 1. The collar 4 is sleeved on the outside of the arc-shaped clamping plate 7. The arc-shaped clamping plate 7 acts on the wedge block 6 to control the expansion and contraction of the cylindrical clamping portion. Preferably, the cross-section of the wedge block 6 gradually increases from top to bottom.

[0026] By arranging a plurality of arc-shaped clamping plates 7 to form a cylindrical clamping portion, when positioning the tap, the shank of the tap is placed into the cylindrical clamping portion, and then the height of the movable frame 1 is adjusted. The movable frame 1 drives the collar 4 to move in the vertical direction. The collar 4 acts on the wedge block 6 to make the plurality of arc-shaped clamping plates 7 slide and contract, clamping and limiting the tap, thereby avoiding its shaking during the coating process.

[0027] In some embodiments, three arc-shaped clamping plates 7 are provided at the top of each rotating seat 10. By arranging three arc-shaped clamping plates 7, three-point positioning of the tap can be carried out along its circumference to ensure the clamping and positioning effect and simplify the structure at the same time.

[0028] In some embodiments, T-shaped sliding grooves 12 are radially opened above the rotating seat 10. There are a plurality of T-shaped sliding grooves 12. A T-shaped slider 8 adapted to the T-shaped sliding groove 12 is fixedly connected to the bottom end of the arc-shaped clamping plate 7. The arc-shaped clamping plate 7 is slidably connected to the rotating seat 10 through the T-shaped slider 8. By using the T-shaped slider 8 and the T-shaped sliding groove 12 to cooperate for sliding connection, the connection between the arc-shaped clamping plate 7 and the rotating seat 10 is more stable, avoiding the arc-shaped clamping plate 7 falling off the rotating seat 10.

[0029] In order to prevent the collar 4 from rotating relative to the cylindrical clamping portion during the self-rotation of the rotating seat 10, resulting in wear of the collar 4 and the wedge block 6, a limiting groove 11 is opened at a position corresponding to the wedge block 6 and the collar 4. The collar 4 is limited by the cooperation of the wedge block 6 and the limiting groove 11, so that the collar 4 can rotate following the cylindrical clamping portion.

[0030] In some embodiments, in order to facilitate the adjustment of the height of the movable frame 1, a threaded barrel 5 is fixedly connected to the top of the base 2, and a bolt 3 is passed through the middle of the movable frame 1 corresponding to the threaded barrel 5, and the bolt 3 is threadedly connected to the threaded barrel 5. When the tap is placed into the cylindrical limiting portion, the movable frame 1 is slid downward so that the arc-shaped clamping plate 7 clamps and fixes the tap, and then the bolt 3 is tightened to fix the height of the movable frame 1.

[0031] Specifically, in order to balance the force on the movable frame 1 , there are a plurality of threaded barrels 5 , and the plurality of threaded barrels 5 are evenly distributed along the circumference of the base 2 .

[0032] Working principle: When in use, lift the movable frame 1, then place the shank of the tap into the cylindrical clamping part, and then slide the movable frame 1 downward. The movable frame 1 drives the ring 4 to move downward, and the ring 4 acts on the wedge block 6, so that the three arc-shaped clamping plates 7 shrink, clamping and fixing the shank of the tap, and then tighten the bolt 3 to complete the fixation of the tap.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A positioning device for tap production, comprising a base (2), a plurality of rotating seats (10) being evenly arranged above the base (2) along its circumference, a gear (9) being fixedly connected to the outer side of the rotating seat (10), characterized in that: The top end of the rotating seat (10) is evenly distributed with a plurality of arc-shaped clamping plates (7) along its circumference, and the plurality of arc-shaped clamping plates (7) form a cylindrical clamping portion. The arc-shaped clamping plates (7) are slidably connected to the rotating seat (10), and the outer side of the arc-shaped clamping plates (7) is fixedly connected with a wedge block (6) along its length direction. A height-adjustable movable frame (1) is provided above the base (2), and a sleeve ring (4) is rotatably connected to the movable frame (1) at a position corresponding to the base (2), and the sleeve ring (4) is sleeved on the outer side of the arc-shaped clamping plates (7). The arc-shaped clamping plates (7) act on the wedge block (6) to control the expansion and contraction of the cylindrical clamping portion.

2. A positioning device for tap production according to claim 1, characterized in that: The top end of each of the rotating seats (10) is provided with three arc-shaped clamping plates (7).

3. A positioning device for tap production according to claim 1, characterized in that: A T-shaped slide groove (12) is provided on the top of the rotating seat (10) along its radial direction, and there are a plurality of T-shaped slide grooves (12). A T-shaped slider (8) adapted to the T-shaped slide groove (12) is fixedly connected to the bottom end of the arc-shaped clamping plate (7), and the arc-shaped clamping plate (7) is slidably connected to the rotating seat (10) via the T-shaped slider (8).

4. A positioning device for tap production according to claim 1, characterized in that: A limiting groove (11) is provided at a position of the collar (4) corresponding to the wedge block (6).

5. The positioning device for tap production according to claim 1, characterized in that: The cross section of the wedge-shaped block (6) gradually increases from top to bottom.

6. A positioning device for tap production according to claim 1, characterized in that: A threaded barrel (5) is fixedly connected to the top of the base (2), a bolt (3) penetrates through a position in the middle of the movable frame (1) corresponding to the threaded barrel (5), and the bolt (3) is threadedly connected to the threaded barrel (5).

7. A positioning device for tap production according to claim 6, characterized in that: There are a plurality of threaded barrels (5), and the plurality of threaded barrels (5) are evenly distributed along the circumference of the base (2).

Images