CN111531639B

CN111531639B - Gear rack torsion vibration table driven by eccentric wheel

Info

Publication number: CN111531639B
Application number: CN202010446681.XA
Authority: CN
Inventors: 冯勇; 王浩祥; 张敏; 李钢; 朱子豪; 王晓宇
Original assignee: Nanjing Institute of Technology
Current assignee: Nanjing Institute of Technology
Priority date: 2020-05-25
Filing date: 2020-05-25
Publication date: 2022-03-08
Anticipated expiration: 2040-05-25
Also published as: CN111531639A

Abstract

A rack and pinion torsional vibration platform driven by an eccentric wheel comprises a rack, wherein the rack comprises a support and a bottom plate, an eccentric wheel shaft is arranged in the support on the left side of the rack, the eccentric wheel shaft is rotatably connected with the support through a bearing, an eccentric wheel is arranged on the eccentric wheel shaft, a slide rail is arranged above the right side of the bottom plate, a slide block is connected above the slide rail in a sliding manner, a slide rod is arranged above the slide block, the left end of the slide rod is connected with a roller through a bolt, the roller is in direct contact with the eccentric wheel, and a baffle is arranged on the right side of the slide rod; the invention can adjust the angle of torsional vibration by changing eccentric wheels with different eccentric distances; the invention utilizes the gear and the rack to transmit torsional vibration, and has higher stability and precision; the invention has simple installation and convenient disassembly and maintenance.

Description

Gear rack torsion vibration table driven by eccentric wheel

Technical Field

The invention relates to the technical field of vibration machining, in particular to a gear rack torsional vibration table driven by an eccentric wheel.

Background

The vibration machining is applied to mechanical machining such as turning, drilling, grinding and the like as an efficient machining process, is beneficial to reducing cutting force and cutting heat, reducing the conditions of cutter sticking and cutter collapsing, and can improve machining efficiency, prolong the service life of a cutter and obtain a high-quality machined surface. From the difference of vibration sources, the method can be divided into two realization forms of workpiece vibration and cutter vibration; the difference in vibration direction can be divided into axial vibration and torsional vibration. For difficult-to-machine materials represented by fiber reinforced composite materials, the technology is beneficial to reducing cutting defects, such as in drilling, high-quality drilling is difficult to obtain for carbon fiber composite materials because fibers are easy to break in the machining process. And the ultrasonic frequency or non-ultrasonic frequency torsional vibration of the axial direction of the drill bit is applied to the drill bit or the workpiece, so that the cutting track can be periodically changed, the fiber breakage is effectively inhibited, the processing effect is improved, but the mechanical torsional vibration tables suitable for drilling and processing fiber materials in the market are not many.

For example, a composite vibration drilling device of patent No. CN201610002983.1 superimposes ultrasonic frequency torsional vibration on a drill bit, and the technical purpose of the composite vibration drilling device is to satisfy non-metal hard and brittle materials and hard-to-cut metal materials, but the requirements on production, manufacture, installation and maintenance of a drilling main shaft are high.

Disclosure of Invention

Technical problem to be solved

The present invention is directed to an eccentric wheel driven rack and pinion torsional vibration table that solves the problems set forth above in the background.

(II) technical scheme

In order to achieve the purpose, the invention provides the following technical scheme: a rack and pinion torsional vibration table driven by an eccentric wheel comprises a frame, wherein the frame comprises a support and a bottom plate, an eccentric wheel shaft is arranged in the support on the left side of the frame and is rotatably connected with the support through a bearing, the eccentric wheel is arranged on the eccentric wheel shaft, a slide rail is arranged above the right side of the bottom plate, a slide block is slidably connected above the slide rail, a slide rod is arranged above the slide block, the left end of the slide rod is connected with a roller through a bolt, the roller is directly contacted with the eccentric wheel, a baffle is arranged on the right side of the slide rod, a small cylindrical rod is arranged at the right end of the slide rod and penetrates through the baffle, a spring is arranged between the slide rod and the baffle and sleeved on the small cylindrical rod, a rack is arranged on one side of the slide rod, and a gear meshed with the rack is arranged on one side of the rack, the gear is rotationally connected with a gear shaft through a bearing, and the gear shaft is vertically arranged on the bottom plate.

Further, a torsional vibration workbench is installed on the upper side of the gear through a bolt.

Furthermore, the slide rail passes through the bolt with the bottom plate is detachable to be connected.

Furthermore, the eccentric wheel is fixedly connected with the eccentric wheel shaft, and the eccentric wheel below is provided with a driving tooth matched with the driving chain for use.

(III) advantageous effects

1. The method for calculating the eccentricity of the eccentric wheel by reverse solving according to the required torsional vibration angle is simple;

2. the invention can adjust the angle of torsional vibration by changing eccentric wheels with different eccentric distances;

3. the invention utilizes the gear and the rack to transmit torsional vibration, and has higher stability and precision;

4. the invention has simple installation and convenient disassembly and maintenance.

Drawings

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

FIG. 1 is an overall elevation view of a torsional vibration platform according to the present invention;

FIG. 2 is a three-dimensional schematic view of the torsional vibration platform of the present invention with the table top removed;

FIG. 3 is a front view of the torsional vibration platform of the present invention with the table top removed;

fig. 4 is a top view of the torsional vibration platform of the present invention with the table top removed.

In the drawings, the names of the parts corresponding to the reference numerals are as follows:

1-frame, 21-eccentric wheel, 22-eccentric wheel shaft, 23-roller, 31-sliding rod, 32-rack, 33-gear shaft, 34-gear, 35-slide block, 36-slide rail, 37-spring, 38-baffle plate and 4-torsional vibration workbench.

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. 1-4, the present invention provides a technical solution: a gear rack torsion vibration table driven by an eccentric wheel comprises a frame 1, wherein the frame 1 comprises a support and a bottom plate, an eccentric wheel shaft 22 is arranged in the left support of the frame 1, the eccentric wheel shaft 22 is rotatably connected with the support through a bearing, an eccentric wheel 21 is arranged on the eccentric wheel shaft 22, a slide rail 36 is arranged above the right side of the bottom plate, a slide block 35 is slidably connected above the slide rail 36, a slide rod 31 is arranged above the slide block 35, the left end of the slide rod 31 is connected with a roller 23 through a bolt, the roller 23 is directly contacted with the eccentric wheel 21, a baffle 38 is arranged on the right side of the slide rod 31, a small cylindrical rod is arranged at the right end of the slide rod 31 and penetrates through the baffle 38, a spring 37 is arranged between the slide rod 31 and the baffle 38 and sleeved on the small cylindrical rod, a rack 32 is arranged on one side of the slide rod 31, a gear 34 meshed with the rack 32 is arranged on one side of the rack 32, and the gear 34 is rotatably connected with a gear shaft 33 through a bearing, the gear shaft 33 is vertically arranged on the bottom plate; the upper side of the gear 34 is provided with a torsional vibration workbench 4 through a bolt; the slide rail 36 is detachably connected with the bottom plate through a bolt; the eccentric wheel 21 is fixedly connected with an eccentric wheel shaft 22, and the eccentric wheel 21 is provided with a driving tooth matched with a driving chain.

When the torsional vibration working table works specifically, a driving chain wheel transmission or a gear transmission is additionally arranged on the eccentric wheel 21, and the sliding rod 31 is driven to slide rightwards in the process stage, so that the rack 32 and the gear 34 are driven to be meshed for transmission, and the torsional vibration working table 4 rotates for an angle; when the eccentric wheel 21 rotates to the return stage, the spring 37 resets the sliding rod 31 to the left, thereby reversely driving the rack 32 and the gear 34 to move, and driving the torsional vibration table 4 to reversely rotate for an angle. One-time torsional movement of the torsional vibration worktable 4 can be completed by complete rotation of the eccentric wheel 21 for one circle, and the purpose of torsional vibration can be achieved by continuous movement.

In this disclosure, aspects of the present invention are described with reference to the accompanying drawings, in which a number of illustrative embodiments are shown. Embodiments of the present disclosure are not necessarily defined to include all aspects of the invention. It should be appreciated that the various concepts and embodiments described above, as well as those described in greater detail below, may be implemented in any of numerous ways, as the disclosed concepts and embodiments are not limited to any one implementation. In addition, some aspects of the present disclosure may be used alone, or in any suitable combination with other aspects of the present disclosure.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides an eccentric wheel driven rack and pinion platform that shakes is turned round which characterized in that: the device comprises a rack (1), wherein the rack (1) comprises a support and a bottom plate, an eccentric wheel shaft (22) is arranged in the support on the left side of the rack (1), the eccentric wheel shaft (22) is rotatably connected with the support through a bearing, an eccentric wheel (21) is arranged on the eccentric wheel shaft (22), a slide rail (36) is arranged above the right side of the bottom plate, a slide block (35) is slidably connected above the slide rail (36), a slide rod (31) is arranged above the slide block (35), the left end of the slide rod (31) is connected with a roller (23) through a bolt, the roller (23) is directly contacted with the eccentric wheel (21), a baffle (38) is arranged on the right side of the slide rod (31), a small cylindrical rod is arranged at the right end of the slide rod (31) and penetrates through the baffle (38), a spring (37) is arranged between the slide rod (31) and the baffle (38) and is sleeved on the small cylindrical rod, a rack (32) is arranged on one side of the sliding rod (31), a gear (34) meshed with the rack (32) is arranged on one side of the rack (32), the gear (34) is rotatably connected with a gear shaft (33) through a bearing, and the gear shaft (33) is vertically arranged on the bottom plate; the upper side of the gear (34) is provided with a torsional vibration workbench (4) through a bolt.

2. The eccentric wheel driven rack and pinion torsion station of claim 1, wherein: the sliding rail (36) is detachably connected with the bottom plate through a bolt.

3. The eccentric wheel driven rack and pinion torsion station of claim 1, wherein: the eccentric wheel (21) is fixedly connected with the eccentric wheel shaft (22), and the eccentric wheel (21) is provided with a driving tooth matched with a driving chain for use.