CN211852670U

CN211852670U - Deep hole processing spring type damping device

Info

Publication number: CN211852670U
Application number: CN202020477373.9U
Authority: CN
Inventors: 何旭; 薛伟
Original assignee: TIANJIN HEAVY EQUIPMENT ENGINEERING RESEARCH CO LTD; China First Heavy Industries Co Ltd
Current assignee: TIANJIN HEAVY EQUIPMENT ENGINEERING RESEARCH CO LTD; China First Heavy Industries Co Ltd
Priority date: 2020-04-03
Filing date: 2020-04-03
Publication date: 2020-11-03
Anticipated expiration: 2030-04-03

Abstract

The utility model discloses a deep hole processing spring type damping shock absorption device, which belongs to the technical field of mechanical processing.A cone is arranged in a shell, a cavity with the same shape as the external shape of a damping sleeve is arranged in the cone, a tapered roller bearing is arranged between the shell and the cone, and the tapered roller bearing is connected with a pre-tightening type adjusting disc through a gasket; a damping sleeve is arranged in the cone, the outer part of the damping sleeve is conical, a tile is arranged in the damping sleeve, and a drill rod is arranged in the tile; a first spring is arranged at the large end of the cone, a sliding block is arranged at one end of the first spring, the other end of the first spring is fixedly arranged on a spring seat, and the spring seat is arranged at the lower end of the inner bushing; the outer end of the inner bushing is provided with a thrust bearing, a second spring is arranged between the thrust bearing and the inner bushing, one end of the thrust bearing is provided with an adjustable top body, a bolt is arranged in the adjustable top body to be connected with the outer bushing, the bottom end of the inner bushing is provided with a pressure plate which is connected with the bottom end of a pre-tightening type adjusting disc through a bolt, a third spring is arranged between the pre-tightening type adjusting disc and the whole, and the pre-tightening type adjusting disc is connected with the shell through a bolt.

Description

Deep hole processing spring type damping device

Technical Field

The utility model relates to a deep hole processing spring damping device belongs to machining technical field.

Background

At present, the shock absorption of domestic deep hole processing is still in a research stage, most shock absorption measures are technical improvement or skills are adopted in the processing process, and in the deep hole drilling processing process, because a drill rod is slender and has insufficient rigidity, strong relative vibration often occurs between a workpiece and a cutter, and the phenomenon is called flutter. Vibration generally exists in three forms, free vibration, forced vibration, and self-excited vibration. Free vibration and forced vibration can be suppressed or even eliminated by eliminating an external excitation source or other methods, but it is difficult to find an effective method for suppressing the generation of self-excited vibration (chattering). Drilling chatter is the self-excited vibration of a closed-loop cutting system formed between a workpiece and a tool-machine tool. Drilling chatter can have a number of undesirable effects, sometimes with considerable consequences, during the deep hole drilling process. The adverse effects caused by drilling chatter during deep hole machining are mainly shown in the following aspects:

(1) affecting the surface quality of the machined hole. The generation of drilling vibration in the deep hole machining process can influence the surface quality of a machined part, so that vibration marks are generated on the surface of a workpiece, and the use requirement of the part cannot be met.

(2) Affecting production efficiency. Drilling vibration is generated in the deep hole machining process, and further improvement of a series of cutting consumption such as drilling speed and feeding amount is limited. In severe cases, the process is interrupted.

(3) The service life of the cutter is influenced, and the durability of the cutter is reduced. The generation of drilling vibration in the deep hole machining process can cause the phenomenon that the cutting edge of the tool tip of the drill bit is broken, and the service life of the tool is shortened.

(4) The flutter can generate great noise, pollute the working environment and harm the health of operators. The deep hole machining mostly adopts a drilling machining mode, occupies a large proportion in mechanical machining, and is an important machining method, so that the problem of vibration in the deep hole machining process is very necessary to be researched.

Disclosure of Invention

In order to overcome the technical insufficiency, the utility model provides a deep hole processing spring damping device, the device adopt the spring resistance bumper shock absorber to set up the drilling rod support promptly on the lathe and eliminate the drilling rod amount of deflection, keep the linear type of drilling rod to reach the drilling rod shake and the cutter that eliminate in the cutting process and shimmy.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a deep hole processing spring formula damping device, the structure is: a cone is arranged in the shell, a cavity with the same shape as the external shape of the damping sleeve is arranged in the cone, a tapered roller bearing is arranged between the shell and the cone, and the tapered roller bearing is connected with a pre-tightening type adjusting disc through a gasket; a damping sleeve is arranged in the cone, the outer part of the damping sleeve is conical, a tile is arranged in the damping sleeve, and a drill rod is arranged in the tile; a first spring is arranged at the large end of the cone, a sliding block is arranged at one end of the first spring, the other end of the first spring is fixedly arranged on a spring seat, and the spring seat is arranged at the lower end of the inner bushing; the outer end of the inner bushing is provided with a thrust bearing, a spring II is arranged between the thrust bearing and the inner bushing, one end of the thrust bearing is provided with an adjustable top body, a bolt is arranged in the adjustable top body and connected with the outer bushing, the bottom end of the inner bushing is provided with a pressure plate which is connected with the bottom end of a pre-tightening type adjusting disc through a bolt, a spring III is arranged between the pre-tightening type adjusting disc and the whole body, two ends of the shell are provided with pre-tightening type adjusting discs, the pre-tightening type adjusting discs are connected with the shell through bolts, a set screw is arranged in the middle of the pre-tightening type adjusting disc, and the set screw; the adjustable jacking body is transversely provided with a lubricating port, the small end of the cone is in contact with a reset guide block, the rear end of the reset guide block is in sliding connection with an adjusting screw rod, the adjusting screw rod is in threaded connection with an inner bushing, the rear end of the adjusting screw rod is exposed out of the pre-tightening adjusting disc, and the end of the adjusting screw rod is provided with an adjusting nut.

The utility model discloses bright beneficial effect is: the device adopts the spring as a damping material, and overcomes the defects that the traditional mechanical damping device and the tile clamping type damping device cannot run at a high speed, have poor damping effect and the like. The utility model has the advantages that the damping sleeve can be reset more conveniently by arranging the reset guide block, so that the drill rod can be conveniently clamped; the utility model discloses can make drilling rod and damping device better pretension to transmission energy avoids appearing drilling rod shake and cutter shimmy effectively, improves the security of machining precision and operation greatly.

Drawings

Fig. 1 is the utility model relates to a deep hole processing spring damping device cross-sectional view.

In the figure, the drill rod 1, the drill rod 2, the damping sleeve 3, the spring I, the spring seat 4, the spring seat 5, the spring II, the spring 6, the cone 7, the spring III, the spring 8, the tapered roller bearing 9, the shell 10, the pre-tightening adjusting disc 11, the lubricating port 12, the bolt 13, the adjustable jacking body 14, the set screw 15, the adjusting nut 16, the adjusting screw rod 17, the thrust bearing 18, the reset guide block 19, the tile 20 and the gasket are used.

Detailed Description

For a clearer understanding of the objects, technical solutions and advantages of the present invention, the present invention will be further described with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1, a cone 6 is arranged in a shell 9, a cavity with the same shape as the outer part of a damping sleeve 2 is arranged in the cone 6, a tapered roller bearing 8 is arranged between the shell 9 and the cone 6, and the tapered roller bearing 8 is connected with a pre-tightening adjusting disc 10 through a gasket 20; a damping sleeve 2 is arranged in the cone 6, the outer part of the damping sleeve 2 is conical, a tile 19 is arranged in the damping sleeve 2, and a drill rod 1 is arranged in the tile 19; a first spring 3 is arranged at the large end of the cone 6, a sliding block is arranged at one end of the first spring 3, the other end of the first spring 3 is fixedly arranged on a spring seat 4, and the spring seat 4 is arranged at the lower end of the inner liner; the outer end of the inner bushing is provided with a thrust bearing 17, a spring II 5 is arranged between the thrust bearing 17 and the inner bushing, one end of the thrust bearing 17 is provided with an adjustable top body 13, a bolt 12 connected with the outer bushing is arranged in the adjustable top body 13, the bottom end of the inner bushing is provided with a pressure plate connected with the bottom end of a pre-tightening type adjusting plate 10 through a bolt, a spring III 7 is arranged between the pre-tightening type adjusting plate 10 and the whole body 6, pre-tightening type adjusting plates 10 are arranged at the two ends of a shell 9, the pre-tightening type adjusting plate 10 is connected with the shell 9 through a bolt, a set screw 14 is arranged in the middle of the pre-tightening type adjusting plate 10, and the set screw 14 is abutted to; the adjustable top body 13 is transversely provided with a lubricating opening 11, the small end of the cone 6 is in contact with a reset guide block 18, the rear end of the reset guide block 18 is in sliding connection with an adjusting screw rod 16, the adjusting screw rod 16 is in threaded connection with an inner bushing, the rear end of the adjusting screw rod 16 is exposed out of the pre-tightening adjusting disc 10, and the end of the adjusting screw rod 16 is provided with an adjusting nut 15.

The lubricating port 11 is arranged in the pre-tightening adjusting disc 10 and communicated with the inside and the outside of the spring type damping shock absorption device, so that the effect of conveniently dripping lubricating oil is achieved.

The set screw 14 is installed on the outer end face of the pre-tightening type adjusting disc 10; the top end of the set screw 14 contacts the adjustable top body 13, and the feeding amount of the adjustable top body 13 is controlled by adjusting the set screw 14.

The adjustable top body 13 is composed of an upper sliding block, a lower sliding block and two bolts 13, and the length of the adjustable top body is adjusted by adjusting the bolts 12.

The reset guide block 18 is fixed at the tail end of the adjusting screw rod 16, the adjusting screw rod 16 is installed with the pre-tightening adjusting disc 10 in a matched mode, the feeding length of the adjusting screw rod 16 is adjusted, the position of the damping sleeve 2 can be controlled, the damping sleeve 2 is reset, and the damping sleeve is fixed through the adjusting nut 15.

The reset guide block 18 is made of aluminum material.

The spring damping sleeve 2 is made of nylon or phenolic cloth.

The gasket 20 is made of an aluminum material.

Before the machining process, in order to facilitate the clamping of the drill rod 1, the feeding amount of the screw 16 is adjusted, and the damping sleeve 2 can be reset due to the fact that the reset guide block 18 is fixed at the tail end of the adjusting screw 16; the telescopic length of the adjustable jacking body 13 is adjusted according to the diameter of the drill rod 1, so that the adjustable jacking body 13 is better coupled with the drill rod 1; adjusting a set screw 14 to enable an adjustable top body 13 to push a thrust bearing 17 to pre-tighten the device; in the running process of the device, the vibration caused by the drill rod 1 can transfer energy to the damping sleeve 2, and the tail end of the damping sleeve 2 is connected with the first spring 3, so that the adverse effect caused by the vibration can be greatly absorbed; the pre-tightening type adjusting disc 10 and the body 9 are installed in a matched mode through screws, residual energy generated by shaking of the drill rod 1 is transmitted to the pre-tightening type adjusting disc 10 and absorbed by the spring III 7, and therefore in the whole machining process, the deflection of the drill rod 1 can be eliminated, the linear type of the drill rod 1 is kept, machining accuracy is improved, and the like.

Claims

1. The utility model provides a deep hole processing spring damping device which characterized by: a cone (6) is arranged in the shell (9), a cavity with the same shape as the outer shape of the damping sleeve (2) is arranged in the cone (6), a tapered roller bearing (8) is arranged between the shell (9) and the cone (6), and the tapered roller bearing (8) is connected with a pre-tightening adjusting disc (10) through a gasket (20); a damping sleeve (2) is arranged in the cone (6), the outer part of the damping sleeve (2) is conical, a tile (19) is arranged in the damping sleeve (2), and a drill rod (1) is arranged in the tile (19); a first spring (3) is arranged at the large end of the cone (6), a sliding block is arranged at one end of the first spring (3), the other end of the first spring (3) is fixedly arranged on the spring seat (4), and the spring seat (4) is arranged at the lower end of the inner bushing; the outer end of the inner bushing is provided with a thrust bearing (17), a second spring (5) is arranged between the thrust bearing (17) and the inner bushing, one end of the thrust bearing (17) is provided with an adjustable top body (13), a bolt (12) is arranged in the adjustable top body (13) and connected with the outer bushing, the bottom end of the inner bushing is provided with a pressure plate which is connected with the bottom end of a pre-tightening type adjusting disc (10) through a bolt, a third spring (7) is arranged between the pre-tightening type adjusting disc (10) and a cone (6), two ends of a shell (9) are provided with pre-tightening type adjusting discs (10), the pre-tightening type adjusting disc (10) is connected with the shell (9) through a bolt, a set screw (14) is arranged in the middle of the pre-tightening type adjusting disc (10), and the set screw (14) is; the adjustable jacking body (13) is transversely provided with a lubricating port (11), the small end of the cone (6) is in contact with a reset guide block (18), the rear end of the reset guide block (18) is in sliding connection with an adjusting screw rod (16), the adjusting screw rod (16) is in threaded connection with an inner bushing, the rear end of the adjusting screw rod (16) is exposed out of the pre-tightening adjusting disc (10), and the end of the adjusting screw rod (16) is provided with an adjusting nut (15).