An over-positioning tool that is convenient for installation

Abstract

The present invention relates to an over-positioning cutter that is convenient for installation. The over-positioning cutter that is convenient for installation includes a machine tool spindle and a basic tool shank. It is characterized in that the machine tool spindle is connected to the basic tool shank by taper hole positioning. A clamping flange is provided on the outer surface of one side of the machine tool spindle, and the clamping flange clamps the outer surface of the basic tool shank. A connecting thread is provided on the outer surface of the basic tool shank, and a nut member is connected to the basic tool shank through the connecting thread. The over-positioning cutter that is convenient for installation can quickly realize the over-positioning clamping of the cutter, meet the heavy-duty cutting of large torque and high power, the process operation is simple and efficient, it can be used in various machine tools with different spindle precisions, and the cutter has low processing and manufacturing cost and is convenient for maintenance.

Description

Technical Field

[0001] The invention belongs to the technical field of machining process manufacturing, and particularly relates to an over-positioning tool that is easy to install. Background Art

[0002] Existing tools for numerical control machine tools usually adopt a non-over-positioning taper hole positioning method (such as BT taper shank tools). However, over-positioning tools on the market (such as BBT taper shank tools) are very expensive because of their high precision and great processing difficulty. Moreover, such over-positioning tools have relatively high requirements for the machining accuracy of the machine tool spindle, and general domestic machine tools cannot well meet the usage conditions of over-positioning tools. Summary of the Invention

[0003] The purpose of the invention is to provide an over-positioning tool that is easy to install, with a simple structure and reasonable design, in order to solve the above problems.

[0004] The invention realizes the above purpose through the following technical solutions:

[0005] An over-positioning tool that is easy to install includes a machine tool spindle and a basic tool shank. The machine tool spindle is connected to the basic tool shank by taper hole positioning. A clamping flange is arranged on the outer surface of one side of the machine tool spindle, and the clamping flange clamps the outer surface of the basic tool shank. A connecting thread is arranged on the outer surface of the basic tool shank, and a nut member is connected to the basic tool shank through the connecting thread.

[0006] As a further optimized scheme of the invention, the basic tool shank is in a three-stage decreasing stepped shape. The first stage is inserted into the machine tool spindle, the second stage is clamped by the clamping flange, and the connecting thread is arranged on the surface of the third stage.

[0007] As a further optimized scheme of the invention, an elastic member is arranged on the side surface of the nut member close to the machine tool spindle, and the other side surface of the elastic member contacts the outer surface of the clamping flange.

[0008] As a further optimized scheme of the invention, a spring groove is opened on the side surface of the nut member close to the machine tool spindle, a compression spring is arranged in the spring groove, and the other end of the compression spring contacts the outer surface of the clamping flange.

[0009] As a further optimized scheme of the invention, a clamping groove is opened on the outer surface of the side wall of the clamping flange, a limiting block is arranged on the side surface of the machine tool spindle close to the clamping flange, and the limiting block is inserted into the clamping groove to limit the rotation of the clamping flange.

[0010] As a further optimized scheme of the invention, a double-threaded groove is opened on the outer surface of the clamping flange close to the nut member, connecting threads are arranged on the inner wall surface of the double-threaded groove and the outer surface of the nut member, and the double-threaded groove is connected to the nut member through the connecting thread.

[0011] The beneficial effects of the present invention are as follows: The present invention solves the technical problem that the clamping flange usually cannot be in close contact with the end face of the machine tool spindle and cannot achieve good over-positioning clamping. By using an elastic member (preferably a compression spring), the tool can quickly and effectively achieve over-positioning clamping, and the stability of the nut member is enhanced through a double-threaded groove. With this adjustable over-positioning tool, the over-positioning clamping of the tool can be quickly realized, meeting the requirements of heavy cutting with large torque and high power. The process operation is simple and efficient, and it can be used in various machine tools with different spindle precisions. Moreover, the tool has low manufacturing cost and is easy to maintain. The entire device is simple to operate, flexible to use, and convenient to promote and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0013] Figure 2 is the Figure 1 internal structure schematic diagram of the present invention;

[0014] Figure 3 is the internal structure schematic diagram of the present invention with a limit block and a card slot.

[0015] In the figure: 1, machine tool spindle; 2, clamping flange; 3, nut member; 4, basic tool shank; 5, spring groove; 6, compression spring; 7, limit block; 8, double-threaded groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] The following further describes the present application in detail with reference to the drawings. It is necessary to point out here that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the protection scope of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0017] Embodiment 1

[0018] As Figures 1-3 shown, an over-positioning tool convenient for installation includes a machine tool spindle 1 and a basic tool shank 4. The machine tool spindle 1 is connected to the basic tool shank 4 by taper hole positioning. A clamping flange 2 is arranged on the outer surface of one side of the machine tool spindle 1. The clamping flange 2 clamps the outer surface of the basic tool shank 4. A connecting thread is arranged on the outer surface of the basic tool shank 4. The basic tool shank 4 is connected with a nut member 3 through the connecting thread.

[0019] The basic tool shank 4 is in the shape of a three - stage decreasing step. The first stage is inserted into the machine tool spindle 1, the second stage is clamped by the clamping flange 2, and the connecting thread is arranged on the surface of the third stage; the surface of the second stage is mainly for increasing friction to stably clamp; on the side of the nut member 3 close to the machine tool spindle 1, an elastic member is arranged, and the other side of the elastic member is in contact with the outer surface of the clamping flange 2; the elastic member should be selected as an elastic member with strong elasticity, and preferably a compression spring 6 is used as the elastic member. A spring groove 5 is opened on the side of the nut member 3 close to the machine tool spindle 1, and a compression spring 6 is arranged in the spring groove 5, and the other end of the compression spring 6 is in contact with the outer surface of the clamping flange 2; on the outer surface of the side wall of the clamping flange 2, a clamping groove is opened, and on the side of the machine tool spindle 1 close to the clamping flange 2, a limit clamping block 7 is arranged, and the limit clamping block 7 is inserted into the clamping groove to limit the rotation of the clamping flange 2; on the outer surface of the clamping flange 2 close to the nut member 3, a double - thread groove 8 is opened, and connecting threads are arranged on the inner wall surface of the double - thread groove 8 and the outer surface of the nut member 3, and the double - thread groove 8 and the nut member 3 are connected by the connecting threads.

[0020] It should be noted that for this over - positioning tool that is easy to install, during use, first, the basic tool shank 4 is connected through taper hole positioning. After being clamped by the clamping flange 2, the nut member 3 is then connected. Before the nut member 3 is tightened, one end of the compression spring 6 in the spring groove 5 will first contact the clamping flange 2. During the tightening process of the nut member 3, the compression spring 6 will tightly contact the outer surface of the clamping flange 2 and the machine tool spindle 1, so that the tool is in an over - positioning state, and the over - positioning clamping of the tool is completed.

[0021] Meanwhile, a double - thread groove 8 can also be arranged on the outer surface of the side wall of the clamping flange 2. When the nut member 3 advances, the clamping flange 2 has already met the requirements of over - positioning clamping. At this time, by using the double - thread groove 8 and the connecting threads on the surface of the basic tool shank 4 to be thread - connected with the inner and outer surface threads of the nut member 3, the influence of the machine tool spindle 1 on the nut member 3 during rotation can be greatly reduced, making the effect of its combined clamping and fixing better.

[0022] The above - described embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. An over-positioning tool that is convenient for installation, comprising a machine tool spindle and a basic tool shank, characterized in that, The machine tool spindle is positioned and connected with the taper hole of the basic tool shank. A clamping flange is arranged on the outer surface of one side of the machine tool spindle. The clamping flange clamps the outer surface of the basic tool shank. A connecting thread is arranged on the outer surface of the basic tool shank. The basic tool shank is connected with a nut member through the connecting thread; An elastic member is arranged on the side surface of the nut member close to the machine tool spindle. The other side surface of the elastic member contacts the outer surface of the clamping flange. A spring groove is formed on the side surface of the nut member close to the machine tool spindle. A compression spring is arranged in the spring groove. The other end of the compression spring contacts the outer surface of the clamping flange; A double-thread groove is formed on the outer surface of the clamping flange close to the nut member. Connecting threads are arranged on the inner wall surface of the double-thread groove and the outer surface of the nut member. The double-thread groove and the nut member are connected through the connecting thread; A clamping groove is formed on the outer surface of the side wall of the clamping flange. A limiting block is arranged on the side surface of the machine tool spindle close to the clamping flange. The limiting block is inserted into the clamping groove to limit the rotation of the clamping flange.

2. The over-positioning tool according to claim 1, which is easy to install, is characterized in that: The basic tool shank is in a stepped shape with three steps decreasing gradually. The first step is inserted into the machine tool spindle. The second step is clamped by the clamping flange. The connecting thread is arranged on the surface of the third step.

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