阅读说明：本技术 一种数控机床用直接式主轴 (Direct type main shaft for numerical control machine tool ) 是由 刘俊 于 2020-05-03 设计创作，主要内容包括：本发明公开了一种数控机床用直接式主轴,包括驱动轴,所述驱动轴的一端固定连接有缓冲管,所述缓冲管的内壁固定连接有导向块,所述导向块的内壁开设有导向槽,所述导向槽的内壁固定连接有导向杆,所述导向杆的表面活动连接有滑块,且滑块活动连接在导向槽的内壁,所述滑块相对应导向杆位置的内部开设有通孔,所述通孔的内壁与导向杆的表面活动连接,所述滑块的两端均固定连接有阻尼弹簧。本发明通过滑块在导向槽的内壁沿着导向杆的方向挤压阻尼弹簧,从而使得驱动轴在驱动连接轴转动的同时,可以使得驱动轴与连接轴发生相对移动,避免驱动轴将轴向窜动传递给连接轴,从而实现取消连接轴轴向窜动的目的。(The invention discloses a direct type spindle for a numerical control machine tool, which comprises a driving shaft, wherein one end of the driving shaft is fixedly connected with a buffer tube, the inner wall of the buffer tube is fixedly connected with a guide block, the inner wall of the guide block is provided with a guide groove, the inner wall of the guide groove is fixedly connected with a guide rod, the surface of the guide rod is movably connected with a slide block, the slide block is movably connected with the inner wall of the guide groove, the slide block is internally provided with a through hole corresponding to the position of the guide rod, the inner wall of the through hole is movably connected with the surface of the guide rod, and two ends of the slide block are fixedly connected with damping springs. According to the invention, the damping spring is extruded by the sliding block on the inner wall of the guide groove along the direction of the guide rod, so that the driving shaft and the connecting shaft can relatively move while the driving shaft drives the connecting shaft to rotate, the axial movement of the driving shaft is prevented from being transmitted to the connecting shaft, and the purpose of canceling the axial movement of the connecting shaft is realized.)

1. The utility model provides a direct type main shaft for digit control machine tool, includes drive shaft (1), its characterized in that: one end of the driving shaft (1) is fixedly connected with a buffer tube (2), the inner wall of the buffer tube (2) is fixedly connected with a guide block (3), the inner wall of the guide block (3) is provided with a guide groove (4), the inner wall of the guide groove (4) is fixedly connected with a guide rod (5), the surface of the guide rod (5) is movably connected with a slide block (6), the slide block (6) is movably connected with the inner wall of the guide groove (4), the inside of the corresponding guide rod (5) position of the slide block (6) is provided with a through hole (7), the inner wall of the through hole (7) is movably connected with the surface of the guide rod (5), the two ends of the slide block (6) are fixedly connected with damping springs (8), one end of the damping springs (8) far away from the slide block (6) is fixedly connected with the inner wall of the guide groove (4), the inner wall of the guide block (3) is movably connected with a connecting shaft (10), and the sliding block (6) is fixedly connected on the surface of the connecting shaft (10), and the connecting shaft (10) movably penetrates through and extends to one end of the buffer tube (2) far away from the driving shaft (1).

2. The direct spindle for a numerical control machine tool according to claim 1, wherein: the inner wall of the guide groove (4) is fixedly connected with a first bump (9), and the inner wall of the first bump (9) is movably connected with the surface of the sliding block (6).

3. The direct spindle for a numerical control machine tool according to claim 1, wherein: the number of the guide grooves (4) is four, and the four guide grooves (4) are annularly formed in the inner wall of the guide block (3).

4. The direct spindle for a numerical control machine tool according to claim 1, wherein: the one end that buffer tube (2) corresponding connecting axle (10) position runs through the embedding and has had stabilizator pipe (11), the inner wall fixedly connected with second lug (12) of stabilizator pipe (11), second lug (12) activity laminating is on the surface of connecting axle (10).

5. The direct spindle for a numerical control machine tool according to claim 1, wherein: one end fixedly connected with head rod (13) of buffer tube (2) position is kept away from in drive shaft (1), bolt fixedly connected with second connecting rod (14) is passed through to head rod (13) one end of keeping away from drive shaft (1) position, and one end fixedly connected with driving motor (15) of head rod (13) are kept away from in second connecting rod (14).

6. The direct spindle for numerical control machine tool according to claim 4, wherein: the surface fixed connection of stabilizator pipe (11) has first louvre (16), and first louvre (16) run through and extend to the inside of stabilizator pipe (11), second louvre (17) have all been seted up to the inside of buffer tube (2) and guide block (3), and the inside of second louvre (17) is linked together with the inside of guide block (3).

Technical Field

The invention relates to the field of numerical control machine tools, in particular to a direct spindle for a numerical control machine tool.

Background

The numerical control machine tool is a digital control machine tool for short, and is an automatic machine tool provided with a program control system, and the machine tool can act and machine parts according to a programmed program. Integrates the latest technologies of machinery, automation, computers, measurement, microelectronics and the like. The basic components of the machine tool comprise a processing program carrier, a numerical control device, a servo driving device, a machine tool main body and other auxiliary devices, wherein a machine tool main shaft refers to a shaft which drives a workpiece or a cutter to rotate on the machine tool. The main shaft component is generally composed of a main shaft, a bearing, a transmission member (gear or pulley), and the like. The machine is mainly used for supporting transmission parts such as gears and belt wheels and transmitting motion and torque, such as a machine tool spindle; some are used to clamp a workpiece, such as a mandrel. Most of machine tools have a spindle unit except for a planer, a broaching machine, and the like, which are linearly moved in main motion.

However, in the prior art, when the numerical control machine tool is actually used, the motor is connected with the spindle in a high-rigidity connection mode, so that the situation that the spindle moves axially when the motor drives the spindle is caused, and the machining of the numerical control machine tool is influenced.

Disclosure of Invention

The invention aims to provide a direct spindle for a numerical control machine tool, which aims to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the improved buffer tube comprises a drive shaft, the one end fixedly connected with buffer tube of drive shaft, the inner wall fixedly connected with guide block of buffer tube, the guide way has been seted up to the inner wall of guide block, the inner wall fixedly connected with guide bar of guide way, the surface swing joint of guide bar has the slider, and slider swing joint is at the inner wall of guide way, the through-hole has been seted up to the inside of the corresponding guide bar position of slider, the inner wall of through-hole and the surface swing joint of guide bar, the equal fixedly connected with damping spring in both ends of slider, the one end fixed connection that the slider was kept away from to the damping spring is at the inner wall of guide way, the inner wall swing joint of guide block has the connecting axle, and slider fixed connection is on the surface of connecting axle, the connecting axle activity runs through and extends to the buffer tube and keeps away from the one end of drive axle position.

Preferably, the inner wall of the guide groove is fixedly connected with a first bump, and the inner wall of the first bump is movably connected with the surface of the sliding block.

Preferably, the number of the guide grooves is four, and the four guide grooves are annularly formed in the inner wall of the guide block.

Preferably, a stabilizing pipe penetrates through and is embedded into one end of the buffer pipe corresponding to the position of the connecting shaft, a second bump is fixedly connected to the inner wall of the stabilizing pipe, and the second bump is movably attached to the surface of the connecting shaft.

Preferably, one end of the driving shaft, which is far away from the buffer tube, is fixedly connected with a first connecting rod, one end of the first connecting rod, which is far away from the driving shaft, is fixedly connected with a second connecting rod through a bolt, and one end of the second connecting rod, which is far away from the first connecting rod, is fixedly connected with a driving motor.

Preferably, the fixed surface of the stabilization pipe is connected with first heat dissipation holes, the first heat dissipation holes penetrate through and extend to the inside of the stabilization pipe, the buffer pipe and the guide block are internally provided with second heat dissipation holes, and the inside of the second heat dissipation holes is communicated with the inside of the guide block.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, the damping spring is extruded by the sliding block on the inner wall of the guide groove along the direction of the guide rod, so that the driving shaft and the connecting shaft can relatively move while driving the connecting shaft to rotate, the driving shaft is prevented from transmitting axial movement to the connecting shaft, and the purpose of canceling the axial movement of the connecting shaft is realized;

2. the device can reduce the friction between the connecting shaft and the stabilizing pipe and between the sliding block and the guide groove by arranging the second lug and the first lug, and has a heat dissipation function by arranging the first heat dissipation hole and the second heat dissipation hole, so that the device can be continuously used for a long time.

Drawings

FIG. 1 is a front sectional view of the overall structure of a direct spindle for a numerically controlled machine tool according to the present invention;

FIG. 2 is a partial front sectional view of the overall structure of a direct spindle for a numerically controlled machine tool according to the present invention;

fig. 3 is a side sectional view of a direct spindle buffer tube structure for a numerical control machine tool according to the present invention.

In the figure: 1. a drive shaft; 2. a buffer tube; 3. a guide block; 4. a guide groove; 5. a guide bar; 6. a slider; 7. a through hole; 8. a damping spring; 9. a first bump; 10. a connecting shaft; 11. a stabilizer tube; 12. a second bump; 13. a first connecting rod; 14. a second connecting rod; 15. a drive motor; 16. a first heat dissipation hole; 17. a second heat dissipation hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: including drive shaft 1, drive shaft 1's one end fixed mounting has buffer tube 2, the inner wall fixed mounting of buffer tube 2 has guide block 3, guide way 4 has been seted up to guide block 3's inner wall, the inner wall fixed mounting of guide way 4 has guide bar 5, the surface swing joint of guide bar 5 has slider 6, and slider 6 swing joint is at the inner wall of guide way 4, through-hole 7 has been seted up to the inside of the corresponding guide bar 5 position of slider 6, the inner wall of through-hole 7 and the surface swing joint of guide bar 5, the equal fixed mounting in both ends of slider 6 has damping spring 8, the one end fixed mounting that slider 6 was kept away from to damping spring 8 is at the inner wall of guide way 4, the inner wall swing joint of guide block 3 has connecting axle 10, and slider 6 fixed mounting is on the surface of connecting axle 10, connecting axle 10 activity runs through and extends to 2 one end of keeping away from drive shaft 1 position of buffer tube.

The inner wall of the guide groove 4 is fixedly provided with a first lug 9, and the inner wall of the first lug 9 is movably connected with the surface of the slide block 6.

The number of the guide grooves 4 is four, and the four guide grooves 4 are annularly formed on the inner wall of the guide block 3.

The buffer tube 2 is inserted with a stabilizing tube 11 at one end corresponding to the connecting shaft 10, a second bump 12 is fixedly mounted on the inner wall of the stabilizing tube 11, and the second bump 12 is movably attached to the surface of the connecting shaft 10.

One end of the driving shaft 1 far away from the position of the buffer tube 2 is fixedly provided with a first connecting rod 13, one end of the first connecting rod 13 far away from the position of the driving shaft 1 is fixedly provided with a second connecting rod 14 through a bolt, and one end of the second connecting rod 14 far away from the first connecting rod 13 is fixedly provided with a driving motor 15.

The fixed surface of the stabilization pipe 11 is provided with a first heat dissipation hole 16, the first heat dissipation hole 16 penetrates through and extends to the inside of the stabilization pipe 11, the buffer pipe 2 and the inside of the guide block 3 are provided with a second heat dissipation hole 17, the inside of the second heat dissipation hole 17 is communicated with the inside of the guide block 3, the second lug 12 and the first lug 9 are arranged, friction between the connecting shaft 10 and the stabilization pipe 11 and between the sliding block 6 and the guide groove 4 can be reduced, the first heat dissipation hole 16 and the second heat dissipation hole 17 are arranged, the device has a heat dissipation function, and the device is used continuously for a long time.

The working principle is as follows: when the driving motor 15 is matched with the second connecting rod 14 and the first connecting rod 13 to drive the driving shaft 1 to rotate, the driving shaft 1 can drive the buffer tube 2 to rotate, the buffer tube 2 can drive the guide block 3 in the buffer tube 2 to rotate, the guide block 3 drives the slide block 6 to rotate through the guide groove 4, so that the slide block 6 drives the connecting shaft 10 to rotate synchronously with the driving shaft 1, the purpose that the driving shaft 1 drives the connecting shaft 10 to rotate synchronously can be achieved, and when the driving motor 15 drives the connecting shaft 10 to rotate through the driving shaft 1, the damping spring 8 is extruded by the slide block 6 on the inner wall of the guide groove 4 along the direction of the guide rod 5, so that the driving shaft 1 can drive the connecting shaft 10 to rotate, the driving shaft 1 and the connecting shaft 10 to move relatively, and the axial movement of the driving shaft 1 driven by the driving motor 15 is prevented from being transmitted to the connecting shaft 10, thereby achieving the purpose of eliminating the axial movement of the connecting shaft 10, and the device has the function of restoring to the initial position by arranging the damping spring 8.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.