High-precision four-jaw chuck

Abstract

The utility model belongs to the field of four-jaw chucks, and particularly relates to a high-precision four-jaw chuck which comprises a base, a main shaft is arranged in the base, a deflector rod is hinged to the interior of the main shaft, the right end of the deflector rod is slidably connected with a deflector rod connecting block, and the deflector rod connecting block is slidably connected with the main shaft. The right end of the shifting rod connecting block is connected with a pull rod through a screw, an air cylinder is fixedly installed at the right end of the base, and an air cylinder rod of the air cylinder is slidably connected with the base. By adopting a driving lever and connecting rod type clamping mode, the clamping device has the characteristics of compact space structure, small transmission clearance, high and stable precision, large clamping force, high efficiency, high precision, high reliability, durability and low possibility of abrasion by adopting gear meshing transmission; the transmission precision of each key component can be controlled within 0.02, and the repeated clamping precision stability of the chuck during use by a user can reach within 0.02.

Description

Technical Field

[0001] The utility model relates to the technical field of four-jaw chucks, in particular to a high-precision four-jaw chuck. Background Art

[0002] The utility model patent with the patent authorization announcement number CN213676166U discloses a pencil sharpener, including a tube body, and mounting grooves are respectively provided inside the openings at both ends of the tube body, and a blade structure is installed inside the mounting grooves. A cleaning mechanism for cleaning is provided on the upper end surface of the mounting groove located on the upper side of the blade structure, and a slot communicating with the inside and outside is provided on the side wall of the middle end of the tube body. A collection box for collecting debris is installed inside the slot, and a collection mechanism is provided inside the collection box. A fixing mechanism for fixing the position of the collection box is provided between the collection box and the tube body. The closing groove and the closing plate of the utility model can form a closed tube body opening through the sealing ring structure, thereby providing a good closed environment inside, preventing external objects from entering and affecting normal use during the process of carrying and moving the pencil, and at the same time, the brush layer can be used to clean the debris left after sharpening the pencil, so as to prevent it from remaining on the surface of the blade structure for a long time and affecting the subsequent use of the pencil. However, during the pencil sharpening process, when the pencil is clamped in the device, the clamping accuracy is low, which will cause damage to the pencil surface. Utility Model Content

[0003] The utility model aims to provide a high-precision four-claw chuck, which solves the problem that when the pencil is clamped in the device during the pencil rolling process, the clamping precision is low and the pencil surface may be damaged.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-precision four-jaw chuck, comprising a base, a main shaft is arranged inside the base, a lever is hinged inside the main shaft, the right end of the lever is slidably connected to a lever connecting block, the lever connecting block is slidably connected to the main shaft, the right end of the lever connecting block is connected to a pull rod by a screw, a cylinder is fixedly installed on the right end of the base, the cylinder rod of the cylinder is slidably connected to the base, the cylinder rod and the pull rod are connected by screws, a claw is hinged on the left end of the lever, and a driving gear is arranged inside the base.

[0005] Preferably, there are four shifting rods, and the four shifting rods are evenly distributed in the main shaft. By setting the shifting rods, the deflection of the claws is controlled.

[0006] Preferably, the lever connecting block is slidably connected to the main shaft, and the pull rod is slidably connected to the main shaft. By providing the pull rod, the lever is easy to move.

[0007] Preferably, the clamping claw is provided with a slider, and the slider is slidably connected to the main shaft. By providing the slider, the movement of the clamping claw is guided.

[0008] Preferably, a driven gear is arranged on the outer side of the main shaft, and the driven gear is meshed with the driving gear. By arranging the driven gear, the main shaft is easy to rotate.

[0009] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0010] The utility model adopts a lever and connecting rod clamping method, and has the characteristics of compact space structure, small transmission gap, high and stable precision, large clamping force, high gear meshing transmission efficiency, high precision and reliability, durability and not easy to wear. The processing of each connecting part of the claw transmission can achieve high precision, so that the transmission accuracy of each key component can be controlled within 0.02. The chuck can be repeatedly clamped with high stability when used by the user and can reach within 0.02. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a three-dimensional diagram of the overall structure of the utility model;

[0012] Figure 2 For this utility model Figure 1 Left view of .

[0013] In the figure: 1. base; 2. driving gear; 3. driven gear; 4. main shaft; 5. cylinder; 6. pull rod; 7. lever connecting block; 8. lever; 9. claw. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0015] See also Figure 1-Figure 2A high-precision four-jaw chuck includes a base 1, a spindle 4 is arranged inside the base 1, a lever 8 is hinged inside the spindle 4, there are four levers 8, and the four levers 8 are evenly distributed in the spindle 4. By setting the lever 8, the deflection of the claw 9 is controlled, the right end of the lever 8 is slidably connected with a lever connecting block 7, the lever connecting block 7 is slidably connected to the spindle 4, the right end of the lever connecting block 7 is connected with a pull rod 6 through a screw, the lever connecting block 7 is slidably connected to the spindle 4, the pull rod 6 is slidably connected to the spindle 4, and the pull rod 6 is slidably connected to the spindle 4. By setting the pull rod 6, In order to facilitate the movement of the lever 8, a cylinder 5 is fixedly installed on the right end of the base 1, a cylinder rod of the cylinder 5 is slidably connected to the base 1, the cylinder rod and the pull rod 6 are connected by screws, a claw 9 is hinged on the left end of the lever 8, a slider is provided on the claw 9, the slider and the main shaft 4 are slidably connected, and the movement of the claw 9 is guided by setting the slider, a driving gear 2 is provided inside the base 1, and a driven gear 3 is provided on the outer side of the main shaft 4, the driven gear 3 is meshed with the driving gear 2, and the main shaft 4 is easy to rotate by setting the driven gear 3.

[0016] The specific implementation process of the utility model is as follows: the lever 8 is pulled by the action of the cylinder 5, and the lever 8 pushes the claw 9 to slide linearly in the guide groove, thereby achieving the opening and clamping action. The lever 8, the claw 9 and the guide groove are precisely matched to achieve high clamping accuracy and stability of repeated clamping. The clamping force varies according to the size of the external air pressure, so that we can clamp materials of different thicknesses without deformation. The driven gear 3 is connected to the main shaft 4, and the driving gear 2 and the driven gear 3 are meshed and transmitted to realize 360-degree rotation and indexing processing of products.

[0017] 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 high-precision four-jaw chuck, comprising a base (1), characterized in that: A main shaft (4) is arranged inside the base (1), a lever (8) is hinged inside the main shaft (4), the right end of the lever (8) is slidably connected to a lever connecting block (7), the lever connecting block (7) and the main shaft (4) are slidably connected, the right end of the lever connecting block (7) is connected to a pull rod (6) by screws, a cylinder (5) is fixedly installed on the right end of the base (1), the cylinder rod of the cylinder (5) is slidably connected to the base (1), the cylinder rod and the pull rod (6) are connected by screws, the left end of the lever (8) is hinged to a claw (9), and a driving gear (2) is arranged inside the base (1).

2. A high-precision four-jaw chuck according to claim 1, characterized in that: There are four shifting rods (8), and the four shifting rods (8) are evenly distributed in the main shaft (4).

3. A high-precision four-jaw chuck according to claim 1, characterized in that: The shift rod connecting block (7) is slidably connected to the main shaft (4), and the pull rod (6) is slidably connected to the main shaft (4).

4. A high-precision four-jaw chuck according to claim 1, characterized in that: The claw (9) is provided with a sliding block, and the sliding block is slidably connected to the main shaft (4).

5. A high-precision four-jaw chuck according to claim 1, characterized in that: A driven gear (3) is arranged on the outer side of the main shaft (4), and the driven gear (3) is meshed with the driving gear (2).

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