CN216607382U - A chuck tensioning device of a CNC milling machine - Google Patents

Abstract

The utility model provides a chuck tensioning device of a numerical control milling machine, which comprises a tool handle, a nut, a chuck, a fastening sleeve and an elastic locking block, wherein the chuck is arranged in a chuck mounting groove, an external thread is arranged on the outer side of one end of the tool handle, the nut is arranged on the outer side of one end of the tool handle through the external thread, the fastening sleeve is arranged on the outer side of the tool handle and is sleeved on the outer side of the nut, the elastic locking block is arranged on the outer side of the nut, a plurality of clamping convex ridges are arranged in the fastening sleeve, the locking block stretches continuously, inclined planes on the outer side of the locking block are clamped with different clamping convex ridges continuously, the clamping convex ridges clamp the nut through the elastic locking block, the tightened nut cannot fall off or loosen in the rotation process, and the stability of the chuck for fixing a tool is improved.

Description

A chuck tensioning device of a CNC milling machine

technical field

The utility model relates to the technical field of chucks, in particular to a chuck tensioning device of a numerically controlled milling machine.

Background technique

The head is called a collet or collet. It is a kind of cylindrical fixture used to hold a drill bit or a milling cutter installed on a milling machine. It is also a fixing device used to fix and reinforce parts that need to be transformed.

The existing collet is generally installed on the tool shank through the nut, and the tightening function of the nut makes the collet clamp the tool to fix the tool. After the existing collet is fixed, the tool shank needs to rotate with the spindle, but The nut is installed on the end of the tool holder through the thread, which is prone to loosening during rotation, and then the collet is loosened and the tool cannot be firmly fixed, which will affect the normal cutting and operation of the tool.

SUMMARY OF THE INVENTION

According to the above technical problems, the present utility model provides a chuck tensioning device for a CNC milling machine, which is characterized by comprising a tool handle, a nut, a chuck, a tightening sleeve and an elastic lock block, and one end of the tool handle is provided with a chuck Installation groove, the collet is installed in the collet installation groove, the outer side of one end of the handle is provided with an external thread, the nut is installed on the outer side of one end of the handle through the external thread, and the inner side of the center of the nut is provided with a block and is connected with the outer thread. The chucks are in contact with each other, and the outer side of the handle is provided with a fastening sleeve and is sleeved on the outer side of the nut, and the outer side of the nut is provided with an elastic locking block;

The inner side of the chuck mounting groove is a wedge-shaped surface;

The inner wall of the tightening sleeve is provided with a plurality of locking ridges from right to left, the locking ridges are annular structures, the cross-section of the locking ridges is a right-angled triangle structure, and the locking ridges The bevel of the corrugated face faces the open end of the sleeve;

The elastic lock block is composed of a spring, a chute and a lock block, the chute is opened on the outer side of the nut, the bottom of the lock block is slidably installed in the chute, and the chute is also provided with a spring and one end. Abutting against the inner wall of the chute, and the other end against the lock block, the outer side of the lock block is an inclined surface, and the inclined surface is also provided with a sliding steel ball;

A toggle plate is also connected to the right side of the lock block, and the toggle plate extends to the outer side of the right side of the nut.

The beneficial effects of the present utility model are:

The utility model is provided with a fastening sleeve and an elastic locking block on the outer side of the nut, and a plurality of locking protrusions are arranged in the fastening sleeve. Left extrusion, the left end of the collet squeezes the wedge-shaped surface of the collet installation groove, and at the same time shrinks inward to clamp the tool, and when the nut is screwed, the inclined surface of the outer end of the elastic locking block of the nut is stuck on the convex ridge of the clamping position. With the rotation of the nut, it moves inward continuously, and the outer side of the lock block gradually moves to the left along the slope of the card position under the action of the sliding steel ball. And the inclined surface on the outside of the lock block is constantly clamped with different card position ridges, and the card position ridges are stuck by the elastic lock block, so that the tightened nut will not fall off or loosen outwards during rotation, which increases the number of clamps. Head-fixed tool stability.

Description of drawings

In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the accompanying drawings required in the description of the specific embodiments or the prior art. Obviously, the following descriptions The accompanying drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

Fig. 1 is the sectional view of the utility model;

Figure 2 is an enlarged view of part A.

As shown in the figure: 1. Tool handle; 2. Nut; 3. Collet; 4. Fastening sleeve; 5. Elastic lock block; Chute; 10, lock block; 11, inclined surface; 12, sliding steel ball; 13, toggle plate.

Detailed ways

The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner" and "outer" The orientation or positional relationship indicated by etc. is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, with a specific orientation. Therefore, it should not be construed as a limitation on the present invention. Furthermore, the terms "first", "second", and "third" are used for descriptive purposes only and should not be construed to indicate or imply relative importance.

In the description of the present invention, it should be noted that, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection or a connectable connection. Detachable connection, or integral connection; it can be mechanical connection or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations. In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as there is no conflict with each other.

Example 1

The utility model provides a chuck 3 tightening device for a numerically controlled milling machine, which is characterized by comprising a tool handle 1, a nut 2, a chuck 3, a tightening sleeve 4 and an elastic locking block 5, and one end of the tool handle 1 is provided with a chuck Mounting slot 6, the chuck 3 is installed in the chuck mounting slot 6, an outer thread is provided on the outer side of one end of the handle 1, the nut 2 is installed on the outer side of one end of the tool handle 1 through the outer thread, and the inner side of the center of the nut 2 is provided with a block and is connected with the clamp. The heads 3 are in contact with each other, and the outer side of the tool handle 1 is provided with a fastening sleeve 4 and is sleeved on the outer side of the nut 2, and the outer side of the nut 2 is provided with an elastic locking block 5;

The inner side of the chuck mounting groove 6 is a wedge-shaped surface;

The inner wall of the fastening sleeve 4 is provided with a number of card position ridges 7 from right to left, the card position ridge 7 is an annular structure, the cross section of the card position ridge 7 is a right-angled triangle structure, and the inclined surface of the card position ridge 7 towards the open end of the sleeve;

The elastic lock block 5 is composed of a spring 8, a chute 9 and a lock block 10. The chute 9 is opened on the outer side of the nut 2, the bottom of the lock block 10 is slidably installed in the chute 9, and the chute 9 is also provided with a spring 8 And one end is against the inner wall of the chute 9, and the other end is against the lock block 10, the outer side of the lock block 10 is an inclined surface 11, and the inclined surface 11 is also provided with a sliding steel ball 12;

A toggle plate 13 is also connected to the right side of the lock block 10 , and the toggle plate 13 extends to the outer side of the right side of the nut 2 .

Example 2

When using the utility model, put the collet 3 into the collet installation groove 6, and then screw the nut 2 to the outer thread on the outside of the tool handle 1, so that the abutment block inside the center of the nut 2 abuts against the right end of the collet 3 , and continue to screw the nut 2 to drive the collet 3 to move to the left and against the wedge-shaped surface of the collet installation slot 6. Due to the setting of the wedge-shaped surface, the collet 3 moves to the left while squeezing the prop to the inside to clamp it. When the nut 2 is screwed, the elastic lock block 5 is driven to rotate and move to the left at the same time, and the inclined surface 11 of the lock block 10 slides along the inclined surface of the locking groove 7 under the action of the sliding steel ball 12 and gradually moves to the left. , while moving to the left, under the action of the spring 8, the lock block 10 expands and contracts continuously and the inclined surface 11 on the outside of the lock block 10 is constantly clamped with different card position protrusions 7, because the cross section of the card position protrusions 7 is a right angle Triangular structure and the outer side of the lock block 10 is an inclined surface 11, so the lock block 10 can only move to the left when the locking protrusion 7 and the lock block 10 cooperate with each other. At the same time, the lock block 10 is limited so that it cannot move to the right, and at the same time, the lock block 10 restricts the position of the nut 2 to clamp the nut 2, so that the tightened nut 2 will not fall off or loosen outwards during rotation, increasing the clamping force. The head 3 fixes the stability of the tool. When the nut 2 and the collet 3 need to be disassembled, the toggle plate 13 is toggled inward to drive the lock block 10 to move inward and the spring 8 is compressed. At this time, the lock block 10 is separated from the outside. When the camber 7 is engaged, the nut 2 can be unscrewed in the reverse direction and the chuck 3 and the tool can be taken out.

The basic principles and main features of the present invention and the advantages of the present invention are shown and described above. The various components mentioned in the present invention are common technologies in the prior art, and those skilled in the art should understand that the present invention is not limited by the above-mentioned embodiments, and the descriptions in the above-mentioned embodiments and the description are only to illustrate the principles of the present invention. On the premise of not departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the claimed invention. The claimed scope of the present invention is defined by the appended claims and their equivalents.

Claims (6)

1. The chuck tensioning device of the numerical control milling machine is characterized by comprising a cutter handle, a nut, a chuck, a fastening sleeve and an elastic locking block, wherein a chuck mounting groove is formed in one end of the cutter handle;

the inner wall of the fastening sleeve is provided with a plurality of clamping convex ribs from right to left.

2. The chuck tensioning device of the numerically controlled milling machine as claimed in claim 1, wherein the inside surface of the chuck mounting groove is a wedge-shaped surface.

3. The chuck tensioning device of the numerically controlled milling machine as claimed in claim 1, wherein the locking lug is of an annular structure, the cross section of the locking lug is of a right-angled triangular structure, and the inclined surface of the locking lug faces one end of the opening of the sleeve.

4. The chuck tensioning device of the numerically controlled milling machine as claimed in claim 1, wherein the resilient locking piece comprises a spring, a sliding groove and a locking piece, the sliding groove is formed in the outer side surface of the nut, the bottom of the locking piece is slidably mounted in the sliding groove, the sliding groove is further internally provided with the spring, one end of the spring abuts against the inner wall of the sliding groove, the other end of the spring abuts against the locking piece, and the outer side surface of the locking piece is an inclined surface.

5. The chuck tensioning device of the numerically controlled milling machine as claimed in claim 4, wherein a toggle plate is further connected to the right side of the lock block, and the toggle plate extends out of the right side of the nut.

6. The chuck tensioning device of the numerically controlled milling machine as claimed in claim 4, wherein sliding steel balls are further arranged on the inclined surface.

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