阅读说明：本技术 一种加工中心用刀结构 (Knife structure for machining center ) 是由 杨世聪 刘伟 武小越 杨光华 吴冬梅 于 2021-08-05 设计创作，主要内容包括：本发明公开了一种加工中心用刀结构,包括前刀体,前刀体内设有安装腔,安装腔内设有竖向活动的刀片,安装腔与前刀体外侧的刀口连通,刀片与刀口相对,刀片的底部与安装腔的底部之间设有横向活动的顶撑机构。本发明的有益效果：刀片可以在主轴停止的状态下,顺利穿过孔到达孔背面,主轴正转后刀片伸出实现孔口倒角的刀体结构,从而大大提高箱体类零件孔在加工中心上的加工效率和质量。(The invention discloses a cutter structure for a machining center, which comprises a front cutter body, wherein a mounting cavity is arranged in the front cutter body, a vertically movable blade is arranged in the mounting cavity, the mounting cavity is communicated with a cutter edge on the outer side of the front cutter body, the blade is opposite to the cutter edge, and a transversely movable jacking mechanism is arranged between the bottom of the blade and the bottom of the mounting cavity. The invention has the beneficial effects that: the blade can pass through the hole smoothly and reach the hole back under the state that the main shaft stops, and the blade stretches out the cutter body structure that realizes the drill way chamfer behind the main shaft corotation to improve machining efficiency and the quality of box class part hole on machining center greatly.)

1. The utility model provides a sword structure for machining center, includes preceding cutter body (4), its characterized in that: the front cutter body (4) is internally provided with a mounting cavity, a vertically movable blade (3) is arranged in the mounting cavity, the mounting cavity is communicated with a cutter edge on the outer side of the front cutter body (4), the blade (3) is opposite to the cutter edge, and a transversely movable jacking mechanism is arranged between the bottom of the blade (3) and the bottom of the mounting cavity.

2. The cutter structure for a machining center according to claim 1, characterized in that: preceding cutter body (4) on be equipped with detachable briquetting (2), briquetting (2) are located the tool bit department, briquetting (2) and blade (3) are pressed and are established the cooperation.

3. The cutter structure for a machining center according to claim 2, characterized in that: and an annular external thread is formed between the pressing block (2) and the front cutter body (4), and the external thread is connected with the internal thread on the end cover (1).

4. The cutter structure for a machining center according to claim 1, characterized in that: the upper part of the blade (3) is conical.

5. The cutter structure for a machining center according to claim 1 or 4, characterized in that: an elastic piece is arranged between the bottom of the blade (3) and the bottom of the mounting cavity.

6. The cutter structure for a machining center according to claim 1, characterized in that: the top bracing mechanism is telescopic.

7. The cutter structure for a machining center according to claim 6, characterized in that: the top support mechanism comprises a top rod (7), the top support end of the top rod (7) is located between the bottom of the blade (3) and the bottom of the installation cavity, and the connecting end of the top rod (7) is connected with the telescopic assembly.

8. The cutter structure for a machining center according to claim 7, characterized in that: the top support end of the top rod (7) is provided with a ball head.

9. The cutter structure for a machining center according to claim 7 or 8, characterized in that: the telescopic assembly comprises a connecting shaft (8), the connecting shaft (8) is connected with the ejector rod (7), the connecting shaft (8) is connected with the front cutter body (4) through transversely arranged threads, and a gyro wheel (9) is arranged on the connecting shaft (8).

10. The cutter structure for a machining center according to claim 1, characterized in that: the front cutter body (4) is connected with the rear cutter body (6), and the rear cutter body (6) is covered on the top support mechanism.

Technical Field

The invention belongs to the field of machining, and particularly relates to a cutter structure for a machining center.

Background

When the hole back side orifice of the part in the box body is chamfered in the machining center, a common cutter is difficult to finish machining in one-time clamping.

Disclosure of Invention

The invention aims to: the invention provides a cutter structure for a machining center, which solves the problem that a common cutter needs to clamp and clamp a chamfer at the back face of a part hole in a box body for machining.

The purpose of the invention is realized by the following technical scheme:

the utility model provides a sword structure for machining center, includes the preceding cutter body, is equipped with the installation cavity in the preceding cutter body, is equipped with the blade of vertical activity in the installation cavity, and the edge of a knife intercommunication in installation cavity and the preceding cutter body outside, the blade is relative with the edge of a knife, is equipped with the shoring mechanism of horizontal activity between the bottom of blade and the bottom of installation cavity. Through the horizontal activity of shoring structure, realize the vertical extension or the withdrawal of blade for the preceding cutter body can be through narrower structure space.

Furthermore, the front cutter body is provided with a detachable pressing block, the pressing block is positioned at the cutter opening, and the pressing block is in press fit with the blade. The briquetting is used for carrying out spacing pressure to the blade and establishes, avoids the blade to deviate from the installation cavity, demolishs the briquetting simultaneously, can pack into or withdraw from the installation cavity with the blade.

Furthermore, the pressing block is matched with the pressing block part on the blade in a pressing mode.

Furthermore, an annular external thread is formed between the pressing block and the front cutter body, and the external thread is connected with the internal thread on the end cover.

Furthermore, the upper part of the blade is conical, and the conical shape can realize the cutting action of the blade in the front and back direction.

Furthermore, one side of the bottom of the blade, which is close to the top bracing mechanism, is provided with an inclined plane, so that the top bracing transition of the top bracing mechanism is facilitated.

Furthermore, an elastic piece is arranged between the bottom of the blade and the bottom of the mounting cavity, and provides extending elastic force for the blade.

Further, the elastic member is a spring.

Furthermore, the bottom of the blade is provided with a sleeve column, the spring is sleeved on the sleeve column, and the sleeve column guides the blade.

Furthermore, the top bracing mechanism is telescopic. The top support structure can be various telescopic mechanisms such as a telescopic cylinder, a lead screw slide block, thread matching and the like.

Furthermore, the top support mechanism comprises a top rod, the top support end of the top rod is located between the bottom of the blade and the bottom of the installation cavity, and the connecting end of the top rod is connected with the telescopic assembly.

Furthermore, the top bracing end of the ejector rod is provided with a ball head, and the ball head is more smoothly matched with the top bracing of the blade.

Furthermore, the telescopic assembly comprises a connecting shaft, the connecting shaft is connected with the ejector rod, the connecting shaft is connected with the front cutter body through transversely arranged threads, and a gyro wheel is arranged on the connecting shaft. The gyro wheel provides rotary inertia for the connecting axle takes place to rotate relatively preceding cutter body, thereby realizes the advance and retreat of ejector pin through screw-thread fit.

Furthermore, the front cutter body is connected with the rear cutter body, and the rear cutter body is covered on the top support mechanism.

Furthermore, the rear cutter body is connected with a threaded sleeve, and the threaded sleeve is pressed on the front cutter body.

The invention has the following realized functions: the blade can realize the retraction and the extension of the blade to participate in cutting according to the position of the end surface sphere of the mandril. And the ejector pin links to each other with connecting axle and top wheel, and the main shaft reversal stops, and top wheel just can make the connecting axle continue to keep reversing under inertial effect, because the connecting axle passes through trapezoidal thread connection with preceding cutter body, just so makes the connecting axle drive the ejector pin and moves to the right, removes the blade bottom when the bulb of ejector pin, and in the blade atress can be retracted to the preceding cutter body this moment, can realize that the blade passes the back that the hole arrived the hole. And when main shaft corotation and when stopping, the top wheel just can make the connecting axle continue to keep corotation under inertial effect, just so makes the connecting axle drive ejector pin and moves left, gets into the piece bottom as the bulb of ejector pin, and the cutter body before the unable withdrawal of blade atress can be in order to realize the chamfer cutting like this.

The invention has the beneficial effects that: the blade can pass through the hole smoothly and reach the hole back under the state that the main shaft stops, and the blade stretches out the cutter body structure that realizes the drill way chamfer behind the main shaft corotation to improve machining efficiency and the quality of box class part hole on machining center greatly.

The main scheme and the further selection schemes can be freely combined to form a plurality of schemes which are all adopted and claimed by the invention; in the invention, the selection (each non-conflict selection) and other selections can be freely combined. The skilled person in the art can understand that there are many combinations, which are all the technical solutions to be protected by the present invention, according to the prior art and the common general knowledge after understanding the scheme of the present invention, and the technical solutions are not exhaustive herein.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a view from a-a of fig. 1.

Fig. 3 is an enlarged view at C of fig. 1.

Fig. 4 is a schematic view of a hole through the present invention.

FIG. 5 is a schematic illustration of the hole back face orifice chamfer of the present invention.

In the figure: 1-end cover, 2-briquetting, 3-blade, 4-front cutter body, 5-swivel nut, 6-rear cutter body, 7-ejector rod, 8-connecting shaft, 9-gyro wheel, 10-nut, 11-spring and 12-processed part.

Detailed Description

The following non-limiting examples serve to illustrate the invention.

Example 1:

referring to fig. 1 to 3, a cutter structure for a machining center includes an end cover 1, a pressing block 2, a blade 3, a front cutter body 4, a swivel nut 5, a rear cutter body 6, a spring 11, and a jacking mechanism, where the jacking mechanism includes a push rod 7, a connecting shaft 8, a gyro wheel 9, and a nut 10.

And a mounting cavity is arranged in the front cutter body 4 and used for mounting the blade and the jacking mechanism. The installation cavity is internally provided with a vertically movable blade 3, the installation cavity is communicated with a knife edge on the outer side of the front knife body 4, and the blade 3 is opposite to the knife edge. The knife edge is used for realizing the extension or retraction of the blade from the mounting cavity, and the vertical telescopic motion of the blade can be realized through the vertical motion of the blade 3.

Be equipped with detachable briquetting 2 on the preceding cutter body 4, briquetting 2 is located the knife edge department, and the cooperation is established with the platen portion pressure on the blade 3 to briquetting 2. The pressing block is positioned above the blade and used for pressing and limiting the blade to prevent the blade from completely falling out of the knife edge. Specifically, an annular external thread is formed between the pressing block 2 and the front cutter body 4, the external thread is connected with an internal thread on the end cover 1, the pressing block is fixedly connected to the front cutter body, and the hexagonal head which is convenient to screw is arranged on the end cover 1.

The upper portion of the insert 3 is conical and is used for chamfering and cutting the workpiece 12. One side of the bottom of the blade 3, which is close to the top bracing mechanism, is provided with an inclined plane, so that the top bracing mechanism can stably extend into or withdraw from the lower part of the blade.

An elastic part is arranged between the bottom of the blade 3 and the bottom of the mounting cavity, the elastic part is a spring 11, and the elastic part provides upward elastic force for the blade to ensure that the blade can stretch out under the elastic force. The bottom of the blade 3 is provided with a sleeve column, the spring 11 is sleeved on the sleeve column, and the sleeve column guides and positions the blade to ensure the accuracy of the vertical movement of the blade.

A transversely movable shoring mechanism is arranged between the bottom of the blade 3 and the bottom of the mounting cavity, and the shoring mechanism is telescopic. Specifically, the top bracing mechanism comprises a top rod 7, a ball head is arranged at the top bracing end of the top rod 7, the top bracing end of the top rod 7 is located between the bottom of the blade 3 and the bottom of the mounting cavity, the extension of the blade is realized through the top bracing of the ball head below the blade, the ball head is withdrawn, and then the blade can retract.

The link and the flexible subassembly of ejector pin 7 are connected, and flexible subassembly includes connecting axle 8, connecting axle 8 and ejector pin 7 fixed connection, through the threaded connection of transverse arrangement between connecting axle 8 and the preceding cutter body 4, are equipped with top wheel 9 through the nut 10 is fixed on the connecting axle 8. Through the screw-thread fit of the front cutter body and the connecting shaft, the rotary motion of the connecting shaft can move transversely left and right relative to the front cutter body, and synchronously drive the ejector rod to stretch left and right, so that the function of jacking or retracting the cutter is realized. The gyro wheel 9 mainly provides a moment of inertia for the rotation of the connecting shaft.

The front cutter body 4 is fixedly connected with the rear cutter body 6, and the rear cutter body 6 covers the top support mechanism to protect the top support mechanism. The rear cutter body 6 is connected with the screw sleeve 5, and the screw sleeve 5 is pressed on the front cutter body 4, so that the front cutter body and the rear cutter body are connected and fixed.

Referring to fig. 4 and 5, when the tool is used, the diameter of the front tool body is selected according to the diameter of the chamfered hole (the diameter of the front tool body < the diameter of the hole), the tool stops after being reversed for a period of time through programming, the rotating inertia of the gyro wheel enables the connecting shaft to continue to rotate for a period of time, the ball head of the ejector rod moves out of the bottom of the blade, and then the blade passes through the hole. The main shaft rotates forwards for a period of time and then stops, the ball head of the ejector rod is inserted into the bottom of the blade, and then the main shaft rotates forwards and orifice chamfering is achieved. And after chamfering is finished, the main shaft rotates reversely for a period of time and stops, so that the ball head of the ejector rod moves out of the bottom of the blade, and finally the cutter is pulled out by retracting the cutter. Therefore, the process step content of the hole back orifice chamfering is realized at one processing station, and the processing efficiency is greatly improved.

The foregoing basic embodiments of the invention and their various further alternatives can be freely combined to form multiple embodiments, all of which are contemplated and claimed herein. In the scheme of the invention, each selection example can be combined with any other basic example and selection example at will.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.