Elastic chuck convenient to disassemble

Abstract

An elastic chuck convenient to disassemble is provided with a vertically-through cylindrical clamping hole and a plurality of upper cutting grooves extending downwards from the upper end face, the elastic chuck is sequentially divided into an upper end portion, a concave ring and a lower end portion from top to bottom, the upper end portion is in a circular truncated cone shape with the narrow upper portion and the wide lower portion, the upper end portion is provided with at least one receding face, and the concave ring is arranged in the receding face. The receding face extends upwards from the lower edge of the outer side surface of the upper end portion, and the radial size of the position, corresponding to the receding face, of the lower edge of the upper end portion is the smallest. Due to the fact that the avoiding face is arranged on the upper end portion, the avoiding face can easily achieve avoiding through the boss of the nut during disassembly and assembly, and the boss in the nut can be clamped into the concave ring of the elastic chuck more easily and retreat from the concave ring. Therefore, the assembling efficiency of the elastic chuck is improved, and the convenience of using a product is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to cutting processing technical field, especially a kind of elastic chuck convenient to disassemble. BACKGROUND

[0002] Elastic chuck is also called elastic chuck, it is a kind of drill milling chuck installed on drill milling machine, its function is to clamp drill or milling cutter.Currently, the most commonly used is ER elastic chuck, its performance is stable, precision is high, its characteristic is that radial runout is only half of C type chuck, greatly improve the precision guarantee of product in machining process, and it is trusted by the majority of manufacturers.

[0003] The elastic chuck commonly used in market currently is disclosed in utility model patent with publication number CN221247800U, a kind of elastic chuck composite tool for lathe, in the process of using, due to the high hardness of the material of this elastic chuck, it is difficult to have elastic deformation, leading to the difficulty of the user to install and disassemble elastic chuck, so great effort is needed, thereby reducing the assembly efficiency of elastic chuck and the convenience of using product. UTILITY MODEL CONTENT

[0004] In order to overcome the shortcomings and deficiencies in the prior art, the purpose of the utility model is to design a kind of elastic chuck convenient to disassemble, which can solve the problem that the existing elastic chuck has high material hardness, it is difficult to have elastic deformation, leading to the difficulty of the user to install and disassemble elastic chuck, so great effort is needed, thereby reducing the assembly efficiency of elastic chuck and the convenience of using product.

[0005] To achieve the above purpose, the utility model provides a kind of elastic chuck convenient to disassemble, it is equipped with upper and lower through cylindrical clamping hole and multiple upper cutting grooves extending from upper end face downwards, the elastic chuck is sequentially divided from top to bottom: upper end, concave ring and lower end, the upper end is the shape of upper narrow lower wide circular truncated cone, the upper end is equipped with at least one avoiding surface, the avoiding surface extends upwards from the lower edge of the outer side surface of the upper end, the radial dimension of the lower edge of the upper end corresponding to the position of the avoiding surface is minimum.

[0006] Further, each of the upper cutting grooves extends downwards to the lower end, and each of the upper cutting grooves is located above the lower end surface of the elastic chuck.

[0007] Further, the lower end is equipped with several lower cutting grooves, each of the lower cutting grooves extends upwards from the lower end surface of the elastic chuck, and each of the lower cutting grooves is located below the groove.

[0008] Further, multiple upper cutting grooves are arranged in circumferential array around the clamping hole.

[0009] Further, the lower end is the shape of lower narrow upper wide circular truncated cone.

[0010] Furthermore, the avoidance surface is an arc-shaped plane.

[0011] The beneficial effects of adopting the above technical solution are as follows: Because the upper end has a clearance surface, it can easily pass through the boss of the nut during assembly and disassembly, thus achieving clearance. The inner boss of the nut can more easily engage with and disengage from the concave ring of the elastic collet. This design structure solves the problem that existing elastic collets are made of high-hardness materials, making it difficult for them to undergo elastic deformation. This results in significant difficulties for users in installing and disassembling the elastic collets, requiring considerable force and reducing the assembly efficiency and ease of use of the product. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the elastic clamp involved in this utility model;

[0013] Figure 2 This is a schematic diagram of the structure of the nut involved in this utility model;

[0014] Figure 3 This is a front view of the elastic clamp and nut in the installation state of this utility model;

[0015] Figure 4 This is a left sectional view of the installation state of the elastic clamp and nut involved in this utility model;

[0016] The attached figures are labeled as follows: 1. Upper end; 2. Concave ring; 3. Lower end; 4. Clamping hole; 5. Clearance surface; 6. Upper groove; 7. Lower groove; 8. Upper jaw; 9. Boss. Detailed Implementation

[0017] The present invention will be further described below through embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0018] like Figures 1-3 As shown, this utility model provides an easily detachable elastic chuck, which has a cylindrical clamping hole 4 extending vertically and multiple upper grooves 6 extending downward from the upper end face. The elastic chuck is divided into three parts from top to bottom: an upper end 1, a concave ring 2, and a lower end 3. The upper end 1 is a frustum shape that is narrower at the top and wider at the bottom. The upper end 1 has at least one clearance surface 5, which extends upward from the lower edge of the outer surface of the upper end 1. The radial dimension of the lower edge of the upper end 1 corresponding to the position of the clearance surface 5 is the smallest. The elastic chuck is made of a material with high hardness, and when the upper end 1 is subjected to an inward compressive force, it is difficult for it to undergo elastic deformation. Figure 2As shown, in actual use, some of the screw caps are provided with three protrusions 9 for fixing the elastic chuck. When the elastic chuck and the screw cap are installed, the screw cap has triangular lines on the end surface corresponding to the protrusions 9, and the upper end surface of the elastic chuck corresponding to the relief surface 5 is also provided with triangular lines in the opposite direction. After the triangular lines of the relief surface 5 are aligned with the triangular lines of the screw cap, that is, aligned with one of the protrusions 9, the elastic chuck is clamped into the screw cap. Since the radial dimension of the relief surface 5 at the position of the upper end portion 1 is smaller than that at other positions, the relief surface 5 can more easily pass through the relief surface of the protrusion 9 of the screw cap, so that the protrusion 9 in the screw cap is clamped into the recess ring of the elastic chuck, and the elastic chuck rebounds from the "compressed" state. After clamping in place, rotate the elastic chuck so that the relief surface 5 is offset from the protrusion 9 in the screw cap, thereby conveniently installing the elastic chuck and ensuring that the elastic chuck is not easily removed. When the elastic chuck is removed, rotate the elastic chuck so that the relief surface 5 is re-aligned with the protrusion 9 in the screw cap, and pull the elastic chuck down so that the elastic chuck is squeezed into a "compressed" state. At this time, the relief surface 5 can also easily pass through the protrusion 9 of the screw cap, thereby conveniently pulling out the elastic chuck.

[0019] In the present embodiment, each upper cut groove 6 extends downward to the lower end portion 3, and each upper cut groove 6 is located above the lower end surface of the elastic chuck. Among them, the tool needs to pass water flow to the tool head through the clamping hole 4 during work, and the water flow is sprayed towards the blade to quickly cool the blade. However, in the traditional elastic chuck, the upper cut groove penetrates the entire elastic chuck from top to bottom, and the water flow is easily sprayed from the upper cut groove of the lower end portion, resulting in a decrease in the amount of water sprayed towards the blade, and the water flow intensity is not enough to cause the blade to cool poorly. In the present embodiment, since the upper cut groove 6 is still a distance away from the lower end surface of the elastic chuck, the water flow sprayed outward from the upper cut groove 6 can be reduced, and the water flow sprayed towards the tool can be increased, thereby improving the cooling effect of the blade.

[0020] In the present embodiment, the lower end portion 3 is provided with a plurality of lower cut grooves 7, each lower cut groove 7 extends upward from the lower end surface of the elastic chuck, and each lower cut groove 7 is located below the recess ring 2. The lower cut groove 7 further increases the retraction space of the elastic chuck, and the lower cut groove 7 is located below the recess ring 2, avoiding water flow from the lower cut groove of the lower end portion 3. Therefore, the water flow sprayed outward from the lower cut groove 7 can be reduced, and the water flow sprayed towards the tool can be increased, thereby improving the cooling effect of the blade.

[0021] The plurality of upper cut grooves 6 are arranged in a circumferential array around the clamping hole 4. The upper cut grooves 6 arranged in a circumferential array evenly divide the upper end portion 1 into a plurality of upper clamping jaws 8, which is conducive to the force being evenly distributed to each upper clamping jaw 8 of the upper end portion 1, and the same effect of deformation is produced.

[0022] The lower end portion 3 is a circular truncated cone shape with a narrow lower end and a wide upper end. It can be convenient for the user to pinch the lower end portion 3 to make the elastic chuck "compressed" and deformed, and to complete the disassembly of the elastic chuck.

[0023] Preferably, the avoiding surface 5 is an arcuate plane. Since the plane is a kind of easy-to-obtain cutting base surface type, it is convenient for the user to process and produce, and the processing and production cost can be reduced. Of course, in other embodiments, the avoiding surface 5 can also be a curved surface, as long as it can play an avoiding effect.

[0024] The above is the preferred embodiment of the present application, it should be pointed out that, for those skilled in the art, without departing from the principles of the present application, can make a number of improvements and refinements, these improvements and refinements also as the protection scope of the present application.

Claims

1. A resilient chuck that is easy to disassemble, comprising a cylindrical clamping hole extending vertically and multiple upper grooves extending downward from the upper end face, wherein the resilient chuck is divided into an upper end, a concave ring, and a lower end from top to bottom, characterized in that, The upper end portion is a frustum shape that is narrower at the top and wider at the bottom. The upper end portion is provided with at least one clearance surface. The clearance surface extends upward from the lower edge of the outer surface of the upper end portion. The radial dimension of the lower edge of the upper end portion corresponding to the location of the clearance surface is the smallest.

2. The easily detachable elastic clamp according to claim 1, characterized in that, Each of the upper grooves extends downward to the lower end, and each of the upper grooves is located above the lower end face of the elastic clamp.

3. The easily detachable elastic clamp according to claim 2, characterized in that, The lower end is provided with a plurality of lower cutting grooves, each of which extends upward from the lower end surface of the elastic clamp and is located below the concave ring.

4. The easily detachable elastic clamp according to claim 1, characterized in that, Multiple upper grooves are arranged in a circumferential array around the clamping hole.

5. The easily detachable elastic clamp according to claim 1, characterized in that, The lower end is a frustum shape, narrow at the bottom and wide at the top.

6. The easily detachable elastic clamp according to claim 1, characterized in that, The avoidance surface is an arc-shaped plane.

Images