CN214617460U

CN214617460U - Precise main shaft transmission mechanism

Info

Publication number: CN214617460U
Application number: CN202121017774.7U
Authority: CN
Inventors: 罗飞龙; 张小平
Original assignee: Dongguan Chuanzheng Electromechanical Technology Co ltd
Current assignee: Dongguan Chuanzheng Electromechanical Technology Co ltd
Priority date: 2021-05-13
Filing date: 2021-05-13
Publication date: 2021-11-05
Anticipated expiration: 2031-05-13

Abstract

The utility model discloses an accurate main shaft drive mechanism, including main shaft, pipe, axle sleeve subassembly and sleeve, the pipe setting is in telescopic inside and interference fit with it, the main shaft pass the pipe and with clearance fit, the shaping has a plurality of oil filler point on the surface of pipe, the shaping has the notes liquid passageway on the front end terminal surface of main shaft, annotates the side intercommunication of liquid passageway and main shaft, the axle sleeve subassembly sets up in the sleeve and installs on the rear end of main shaft, the beneficial effects of the utility model are that: oil is injected into the pipe through the oil injection channel and the oil injection holes on the threads, so that the side surface of the main shaft can be completely contacted with the oil, and the lubricating and cooling effects are obvious; oil flows into the oil cavity through the pipe, and the shaft sleeve assembly is lubricated and cooled, wherein the oil can cover the contact surface of the first friction ring and the contact surface of the second friction ring through the oil inlet holes in the first friction ring and the second friction ring, so that the lubricating and cooling effects are achieved, and meanwhile, the abrasion is reduced.

Description

Precise main shaft transmission mechanism

Technical Field

The utility model relates to a pivot field especially relates to an accurate main shaft drive mechanism.

Background

The main shaft is a relatively common transmission mechanism, and when high-precision and high-speed machining is carried out, the main shaft transmission mechanism has a large load and is easy to wear, and when the main shaft runs at high speed, a large amount of heat is generated to cause the temperature of the main shaft to rise, so that the main shaft rotating at high speed is different from the main shaft rotating at low speed, and the main shaft rotating at high speed usually adopts lubrication modes of oil mist lubrication, oil-gas lubrication and jet lubrication, namely, the oil mist lubrication is that compressed air is utilized, special oil liquid is sprayed into an atomized state by a special spraying device after purification treatment, and oil mist is forcibly sent to a bearing part of the main shaft by utilizing compressed air to lubricate a high-speed bearing. In the lubrication mode of oil mist lubrication, because oil mist is discharged into the atmosphere immediately after passing through a main shaft bearing, serious environmental pollution can be caused, the physical health of workers is damaged, a gap exists between a traditional main shaft and the bearing, the main shaft can jump in the gap when driving a machining device, instruments are lost, and the machining precision is also influenced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an it is easy because the bearing clearance appears beating and adopt the oil mist lubrication can cause environmental pollution etc. not enough to overcome above-mentioned main shaft at the during operation, provides an accurate main shaft drive mechanism, reduces main shaft wearing and tearing and oil mist pollution, improves the machining precision, can use widely in the numerical control machining equipment of high accuracy, high efficiency, high, low speed.

The utility model provides a precision spindle drive mechanism, includes main shaft, pipe, axle sleeve subassembly and sleeve, the pipe setting in telescopic inside and interference fit with it, the main shaft pass the pipe and with clearance fit, the shaping has a plurality of oil filler point on the surface of pipe, the shaping has the notes liquid passageway on the front end terminal surface of main shaft, annotates the side intercommunication of liquid passageway and main shaft, the axle sleeve subassembly sets up in the sleeve and installs on the rear end of main shaft.

As one improvement of the technical scheme, the outer side of the pipe is molded with threads, and the oil injection hole is formed in the threads.

As one improvement of the above technical solution, an oil storage tank is formed on a side surface of the front end of the main shaft, an inlet end of the liquid injection channel is arranged on the end surface of the front end of the main shaft, and an outlet end of the liquid injection channel is arranged in the oil storage tank.

As one improvement of the technical scheme, the shaft sleeve assembly comprises a clamping ring, a first friction ring, an inner ring, an outer ring, a second friction ring and a sealing ring, wherein the outer ring is sleeved outside the inner ring and is in clearance fit with the inner ring, the clamping ring is arranged on the side of the inner ring, the clamping ring is coaxially arranged on the main shaft and is in threaded fit with the main shaft, the first friction ring is sleeved outside the clamping ring and is in clearance fit with the clamping ring, the first friction ring and the second friction ring are respectively arranged on two sides of the inner ring and the outer ring, the sealing ring is arranged behind the second friction ring, the outer ring of the sealing ring is in threaded fit with the sleeve, and the main shaft penetrates through the sealing ring and is in rotational fit with the sealing ring.

As an improvement of the above technical solution, the outer ring of the inner ring is inclined.

As one improvement of the technical scheme, a first groove is formed in the side face of the sealing ring, a second groove is formed in the side face of the rear end of the main shaft in a protruding mode, and the first groove and the second groove are buckled with each other.

As one improvement of the technical scheme, oil inlet holes are formed in the side faces of the first friction ring and the second friction ring.

As one improvement of the technical scheme, the clamping ring and the inner ring are respectively sleeved on the main shaft and driven by the main shaft.

As one improvement of the technical scheme, an oil cavity for placing the shaft sleeve assembly is formed in the sleeve, and the oil cavity is in clearance fit with the shaft sleeve assembly.

Compared with the prior art, the beneficial effects of the utility model are that:

1. fluid passes through the priming passageway, and each oil filler point via on the screw thread pours into the inside of pipe into, lets the side of main shaft can contact with fluid completely, and lubrication, cooling effect are showing.

2. Oil flows into the oil cavity through the pipe, and the shaft sleeve assembly is lubricated and cooled, wherein the oil can cover the contact surface of the first friction ring and the contact surface of the second friction ring through the oil inlet holes in the first friction ring and the second friction ring, so that the lubricating and cooling effects are achieved, and meanwhile, the abrasion is reduced.

3. The utility model discloses inside directly injecting into the sleeve with fluid, oil mist pollution can be reduced to lubricated mode of oil mist relatively, can also play the cooling action.

4. The utility model discloses an inner ring cover is on the main shaft, and the inner ring outside still is provided with the outer loop, and the inner ring presss from both sides between first friction ring and second friction ring, and rethread snap ring locks with the sealing ring, solves the main shaft and rotates the problem that has the clearance between in-process and the bearing, improves machining precision and stability.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

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

Fig. 2 is an exploded view of the present invention.

Fig. 3 is another schematic structural diagram of the present invention.

Fig. 4 is a schematic structural view of the bushing assembly of the present invention.

Fig. 5 is a schematic structural view of the tube of the present invention.

Fig. 6 is a schematic structural view of the spindle of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be understood that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Please refer to fig. 1-6, in an embodiment of the present invention, an accurate spindle transmission mechanism includes a spindle 9, a tube 2, a sleeve assembly and a sleeve 1, the tube 2 is disposed inside the sleeve 1 and is in interference fit with the sleeve 1, the spindle 9 passes through the tube 2 and is in clearance fit with the tube 2, a plurality of oil holes 22 are formed on the surface of the tube 2, a liquid injection channel 93 is formed on the front end face of the spindle 9, the liquid injection channel 93 is communicated with the side face of the spindle 9, and the sleeve assembly is disposed in the sleeve 1 and is mounted on the rear end of the spindle 9.

Specifically, the outside of pipe 2 is formed with screw thread 21, oil filler point 22 sets up on screw thread 21, the shaping has oil storage tank 91 on the front end side of main shaft 9, and the entrance point of notes liquid passageway 93 sets up on the front end terminal surface of main shaft 9, and the exit end of notes liquid passageway 93 sets up in oil storage tank 91.

Fluid from the entrance point injection of priming passageway 93, flow out from the exit end of priming passageway 93, flow into the oil storage tank 91 in, most fluid flows out from the oil filler point 22 nearest from the oil storage tank 91 again, in the gap of pipe 2 and main shaft 9 can be infiltrated to a small part fluid, fluid flows into in the screw thread 21 after flowing out from oil filler point 22 again, in permeating the gap of pipe 2 and main shaft 9 through each oil filler point 22 on the screw thread 21 again for the side of main shaft 9 can obtain fluid lubrication.

The shaft sleeve component comprises a clamping ring 3, a first friction ring 4, an inner ring 5, an outer ring 6, a second friction ring 7 and a sealing ring 8, wherein the outer ring 6 is sleeved outside the inner ring 5 and is in clearance fit with the inner ring 5, specifically, the outer ring of the inner ring 5 is inclined, the clamping ring 3 is arranged on the side of the inner ring 5, the clamping ring 3 is coaxially arranged on a main shaft 9 and is in threaded fit with the main shaft, the first friction ring 4 is sleeved outside the clamping ring 3 and is in clearance fit with the clamping ring 3, the first friction ring 4 and the second friction ring 7 are respectively arranged on two sides of the inner ring 5 and the outer ring 6, specifically, oil inlet holes 41 are formed in the side surfaces of the first friction ring 4 and the second friction ring 7, the sealing ring 8 is arranged behind the second friction ring 7, the outer ring of the sealing ring 8 is in threaded fit with a sleeve 1, the main shaft 9 penetrates through the sealing ring 8 and is in rotational fit with the sealing ring, specifically, a first groove 81 is formed in the side surface of the sealing ring 8, the rear end side of the main shaft 9 protrudes and is formed with a second groove 92, the first groove 81 and the second groove 92 are buckled, and the cooperation of the two grooves which are buckled (sealed) can prevent oil from flowing out, so that the oil leakage is reduced or even avoided.

Specifically, an oil cavity 10 for placing a shaft sleeve assembly is formed in the sleeve 1, and the oil cavity 10 is in clearance fit with the shaft sleeve assembly;

regarding the processing technology of the oil cavity 10 in the sleeve 1, the clearance between the shaft sleeve assembly (mainly the first friction ring 4, the second friction ring 7 and the outer ring 6) and the oil cavity can be reduced as much as possible under the condition that the shaft sleeve assembly can be put down, and then the bidirectional locking is carried out through the clamping ring 3 and the sealing ring 8.

The oil liquid flows into the oil cavity 10 through the pipe 2, the oil liquid can infiltrate into gaps among the rings of the shaft sleeve assembly, particularly, oil inlet holes 41 are formed in the side surfaces of the first friction ring 4 and the second friction ring 7 and cover the contact surface (the surface which is in friction with the inner ring 5 or the outer ring 6) of the first friction ring 4 and the second friction ring 7;

snap ring 3, inner ring 5 coaxial cup joint on main shaft 9 and by main shaft 9 drive, inner ring 5 can produce the friction with first friction ring 4 and second friction ring 7, and fluid just can play the lubrication action this time, and the outer lane of inner ring 5 is the slope form for can store more fluid between inner ring 5 and the outer loop 6, can also guide the fluid flow direction.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims

1. A precision spindle drive mechanism, characterized in that: including main shaft, pipe, axle sleeve subassembly and sleeve, the pipe setting is in telescopic inside and interference fit with it, the main shaft pass the pipe and with clearance fit, the shaping has a plurality of oil filler point on the surface of pipe, the shaping has the notes liquid passageway on the front end terminal surface of main shaft, annotates the side intercommunication of liquid passageway and main shaft, the axle sleeve subassembly sets up in the sleeve and installs on the rear end of main shaft.

2. A precision spindle drive according to claim 1, wherein: the outside shaping of pipe has the screw thread, the oil filler point sets up on the screw thread.

3. A precision spindle drive according to claim 1, wherein: an oil storage tank is formed in the side face of the front end of the main shaft, the inlet end of the liquid injection channel is arranged on the end face of the front end of the main shaft, and the outlet end of the liquid injection channel is arranged in the oil storage tank.

4. A precision spindle drive according to claim 1, wherein: the shaft sleeve assembly comprises a clamping ring, a first friction ring, an inner ring, an outer ring, a second friction ring and a sealing ring, wherein the outer ring is sleeved outside the inner ring and in clearance fit with the inner ring, the clamping ring is arranged on the side of the inner ring, the clamping ring is coaxially arranged on the main shaft and in threaded fit with the main shaft, the first friction ring is sleeved outside the clamping ring and in clearance fit with the clamping ring, the first friction ring and the second friction ring are respectively arranged on two sides of the inner ring and the outer ring, the sealing ring is arranged behind the second friction ring, the outer ring of the sealing ring is in threaded fit with the sleeve, and the main shaft penetrates through the sealing ring and is in rotational fit with the sealing ring.

5. A precision spindle drive according to claim 4, wherein: the outer ring of the inner ring is inclined.

6. A precision spindle drive according to claim 4, wherein: the side surface of the sealing ring is formed with a first groove, the side surface of the rear end of the main shaft protrudes and is formed with a second groove, and the first groove is buckled with the second groove.

7. A precision spindle drive according to claim 4, wherein: oil inlet holes are formed in the side faces of the first friction ring and the second friction ring.

8. A precision spindle drive according to claim 4, wherein: the clamping ring and the inner ring are respectively sleeved on the main shaft and driven by the main shaft.

9. A precision spindle drive according to claim 1, wherein: an oil cavity for placing the shaft sleeve assembly is formed in the sleeve, and the oil cavity is in clearance fit with the shaft sleeve assembly.