CN110977742A

CN110977742A - Stepped bar polishing device

Info

Publication number: CN110977742A
Application number: CN201911279623.6A
Authority: CN
Inventors: 崔晓斌; 李永辉; 郭景霞; 任磊
Original assignee: Henan University of Technology
Current assignee: Henan University of Technology
Priority date: 2019-12-13
Filing date: 2019-12-13
Publication date: 2020-04-10
Anticipated expiration: 2039-12-13
Also published as: CN110977742B

Abstract

The invention discloses a stepped bar polishing device, which comprises a base, wherein a left clamping mechanism, a polishing mechanism and a right clamping mechanism are sequentially fixed on the base from left to right, the left clamping mechanism and the right clamping mechanism are used for supporting and fixing a bar to be polished, the polishing mechanism comprises a left support and a right support, a guide rod is fixed between the left support and the right support, a power screw rod is rotatably connected with the guide rod, a first stepping motor used for driving the power screw rod to rotate is fixed on the base, a sliding seat is slidably connected on the guide rod, the power screw rod penetrates through the sliding seat and is in threaded connection with the sliding seat so as to drive the sliding seat to move left and right through the rotation of the power screw rod, and a polishing and spraying mechanism is arranged on the sliding seat; therefore, the invention realizes the continuous polishing action without interruption to the circumferential direction and the axial direction of the trapezoidal bar.

Description

Stepped bar polishing device

Technical Field

The invention belongs to the technical field of grinding and polishing, and particularly relates to a stepped bar polishing device.

Background

Polishing refers to a process of reducing the roughness of the surface of a workpiece by mechanical, chemical or electrochemical action to obtain a bright, flat surface. When the polishing machine works, a wheel made of soft materials such as cloth, leather or wood with abrasive materials is generally used for high-speed rotation to wipe the surface of a workpiece so as to improve the surface smoothness of the workpiece. The conventional polishing machine has a good polishing effect on a plane and a surface with low curvature, however, when the circumferential surface is polished, uneven polishing occurs, particularly polishing of a stepped bar cannot be adapted, the processing efficiency is greatly reduced, and the polishing effect is also reduced by vibration of the conventional polishing machine.

Disclosure of Invention

The invention aims to provide a stepped bar polishing device; the technical scheme adopted for achieving the purpose is as follows:

a stepped bar polishing device comprises a base, wherein a left clamping mechanism, a polishing mechanism and a right clamping mechanism are sequentially fixed on the base from left to right, the left clamping mechanism and the right clamping mechanism are used for supporting and fixing a bar to be polished, the polishing mechanism comprises a left support and a right support, a guide rod is fixed between the left support and the right support and is rotationally connected with a power lead screw, a first stepping motor used for driving the power lead screw to rotate is fixed on the base, a sliding seat is connected on the guide rod in a sliding manner, the power lead screw penetrates through the sliding seat and is in threaded connection with the sliding seat so as to drive the sliding seat to move left and right through the rotation of the power lead screw, and a polishing spraying mechanism is mounted on the sliding seat;

the polishing spraying mechanism comprises a rolling ring, a second stepping motor, a driving roller and a driven roller are mounted on a sliding seat and used for supporting the rolling ring, a transmission shaft of the second stepping motor is in transmission connection with the driving roller, the driving roller and the driven roller are in transmission connection with the rolling ring, a guide support used for guiding the rotation of the rolling ring is mounted on the sliding seat, a rod to be polished penetrates through the rolling ring, and a plurality of polishing wheels used for polishing the surface of the rod to be polished are arranged in the rolling ring in a circumferential direction.

Preferably, the polishing wheel is fixed on the inner wall of the rolling ring through a swing support, the swing support comprises a frame seat fixed on the inner wall of the rolling ring, two swing arms are connected to the frame seat in parallel in a rotating mode through a pin shaft, a mounting seat is hinged between the tail ends of the two swing arms, a knife shaft is connected to the mounting seat in a rotating mode, the polishing wheel is fixedly connected to the tail end of the knife shaft, an extension spring is arranged between the frame seat and the mounting seat, and the polishing wheel is tightly attached to the circumferential surface of a bar to be polished under the action of the tension of the.

Preferably, a gear pump is installed on the sliding seat, the driven roller is in transmission connection with an input main shaft of the gear pump, and a nozzle of an output pipe of the gear pump is located at a polishing treatment position of the bar to be polished.

Preferably, the working surface of the polishing wheel is a wedge-shaped surface.

Preferably, left fixture and right fixture's the same structure is called fixture together with it, fixture is including fixing the U type support arm on the base, be equipped with down the arc support between two branch support arm tops of U type support arm, arc support one end articulates there is last arc support down, form annular support when last arc support lock is arc support down, the non-hinged end of arc support passes through bolt fixed connection down, be equipped with the lower carriage under on the arc support, be equipped with the upper bracket on last arc support, lower carriage and upper bracket lock and be used for treating the support of polishing bar fixed.

Preferably, rubber cushions are arranged on the acting surfaces of the upper bracket and the lower bracket.

Preferably, the top of the upper bracket is universally connected with an upper threaded rod, and the upper threaded rod upwards penetrates through the upper arc-shaped support and is in threaded connection with the upper arc-shaped support; the bottom universal connection of lower carriage has threaded rod down, and threaded rod passes lower arc support downwards and with lower arc support threaded connection down.

Preferably, the two branch supporting arms of the U-shaped supporting arm are lifting branch arms.

The invention has the following beneficial effects: (1) the left clamping mechanism B and the right clamping mechanism D can clamp and fix the bars to be polished with different diameters, and simultaneously can change the positions of the bars to be polished to ensure the coaxiality with the rolling ring C56 and improve the polishing quality;

(2) in the rotating process of the rolling ring C56, a plurality of polishing wheels simultaneously polish around the circumferential direction, so that the polishing uniformity is ensured, and the polishing effect is good;

(3) under the matching action of the swing support C58, the polishing wheel can actively carry out position fine adjustment and autorotation fine adjustment, and automatically adapt to the step-shaped change of the diameter of the bar to be polished;

(4) during polishing, the rotation of the rolling ring C56 can be adaptively matched with the liquid spraying amount of the gear pump, so that the adaptive matching of polishing and the liquid spraying amount of the polishing liquid is realized, the polishing effect is ensured, and the polishing quality is improved; therefore, the invention realizes the continuous polishing action without interruption to the circumferential direction and the axial direction of the trapezoidal bar.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic perspective view of a polishing mechanism;

FIG. 3 is a schematic perspective view of the swing support;

fig. 4 is a schematic perspective view of the left clamping mechanism.

Detailed Description

The invention is further described below with reference to the accompanying drawings.

As shown in fig. 1 to 4, a stepped bar polishing device comprises a base a, a left clamping mechanism B, a polishing mechanism C and a right clamping mechanism D are sequentially fixed on the base a from left to right, wherein the left clamping mechanism B and the right clamping mechanism D are used for supporting and fixing a bar to be polished, the polishing mechanism C comprises a left support C2 and a right support C6, a guide rod C4 is fixed between the left support C2 and the right support C6 and is rotatably connected with a power lead screw C3, a first stepping motor C1 for driving the power lead screw C3 to rotate is fixed on the base a, a slide carriage C7 is slidably connected on the guide rod C4, the power lead screw C3 penetrates through the slide carriage C7 and is in threaded connection with the slide carriage C7 so as to drive the slide carriage C7 to move left and right through the rotation of the power lead screw C3, and a polishing spraying mechanism C5 is installed on the slide carriage C7;

the polishing spraying machine C5 comprises a rolling ring C56, a second stepping motor C51, a driving roller C52 and a driven roller C61 are mounted on a sliding seat C7, the driving roller C52 and the driven roller C61 are used for supporting the rolling ring C56, a transmission shaft of the second stepping motor C51 is in transmission connection with the driving roller C52, a driving roller C52 and the driven roller C61 are in transmission connection with the rolling ring C56, a guide bracket C53 used for guiding the rotation of the rolling ring C56 is mounted on the sliding seat C7, a bar to be polished penetrates through the rolling ring C56, and a plurality of polishing wheels C57 used for polishing the surface of the bar to be polished are arranged in the rolling ring C56 in the circumferential direction.

In order to realize the polishing of the material rod with the gradually-changed diameter, the polishing wheel C57 is fixed on the inner wall of the rolling ring C56 through a swinging support C58, the swinging support C58 comprises a frame seat C64 fixed on the inner wall of the rolling ring C56, two swinging arms C65 are connected to the frame seat C64 in a parallel rotating manner through a pin shaft C63, a mounting seat C67 is hinged between the tail ends of the two swinging arms C65, a cutter shaft is connected in the mounting seat C67 in a rotating manner, the polishing wheel C68 is fixedly connected to the tail end of the cutter shaft, a tension spring C66 is arranged between the frame seat C64 and the mounting seat C67, and the polishing wheel C68 is tightly attached to the circumferential surface of the material rod to be polished under the; in order to better match the steering action of the tension spring C66 and the polishing wheel C68, the working surface of the polishing wheel C68 is a wedge-shaped surface.

A gear pump C60 is mounted on the sliding seat C7, the driven roller C61 is in transmission connection with an input main shaft of the gear pump C60, and a nozzle of an output pipe C59 of the gear pump C60 is positioned at the polishing treatment position of the bar stock to be polished.

As shown in fig. 1 and 4, the left clamping mechanism B and the right clamping mechanism D have the same structure and are collectively referred to as a clamping mechanism, the clamping mechanism includes a U-shaped support arm B1 fixed on the base a, a lower arc support B2 is arranged between the tops of two support arms of the U-shaped support arm B1, an upper arc support B4 is hinged at one end of the lower arc support B2, an annular support is formed when the upper arc support B4 is buckled on the lower arc support B2, the lower arc support B2 is fixedly connected with the non-hinged end of the upper arc support B4 through a bolt, a lower bracket B8 is arranged on the lower arc support B2, an upper bracket B6 is arranged on the upper arc support B4, and the lower bracket B8 is buckled with the upper bracket B6 for supporting and fixing the bar to be polished; rubber cushions B3 and B7 are arranged on the acting surfaces of the upper bracket B6 and the lower bracket B8.

In order to realize the adjustment of the clamping center position, the top of the upper bracket B6 is universally connected with an upper threaded rod B5, and an upper threaded rod B5 upwards passes through the upper arc-shaped bracket B4 and is in threaded connection with the upper arc-shaped bracket B4; the bottom of the lower bracket B2 is universally connected with a lower threaded rod B9, and a lower threaded rod B9 downwards passes through the lower arc-shaped bracket B2 and is in threaded connection with the lower arc-shaped bracket B2; meanwhile, the two sub-support arms of the U-shaped support arm B1 are lifting type sub-support arms, for example, the two sub-support arms are arranged in a sleeve structure, a sliding column is connected in the sleeve structure in a vertically sliding manner, and a fastening bolt for fastening the sliding column is arranged on the sleeve structure; in addition, a plurality of positioning holes can be arranged on the sleeve structure and the sliding column side by side from top to bottom, so that the fastening bolt can also play a role in positioning when the sliding column is lifted to different heights and is screwed into the corresponding positioning holes of the sleeve structure and the sliding column.

In addition, in order to ensure that the rolling ring C56 rotates more stably, the rolling ring C56 is arranged to be a gear ring, the driving roller C52 and the driven roller C61 are correspondingly arranged to be a driving gear and a driven gear which are meshed with the gear ring, guide ring grooves are formed in the left side surface and the right side surface of the gear ring, a guide claw is arranged at the top of the guide support C53, and the end part of the guide claw is located in the guide ring grooves so as to play a role in positioning and guiding the rotation of the gear ring.

Aiming at the swing support C58, in order to realize the self fine adjustment function, a strip-shaped sliding groove is arranged on a frame seat C64 along the radial direction of a gear ring, a pin shaft C63 is correspondingly replaced by a sliding block, two swing arms C65 are correspondingly hinged on the sliding block, two ends of a sliding hole block are correspondingly and slidably connected in the strip-shaped sliding groove, and two ends of the sliding block are provided with fastening nuts for fixing the sliding block; furthermore, scale marks can be arranged beside the strip-shaped sliding groove to indicate the fine adjustment distance of the polishing wheel C68.

When the polishing machine works, a bar to be polished sequentially penetrates through a left clamping mechanism B, a rolling ring C56 and a right clamping mechanism D from left to right, the two ends of the bar to be polished are clamped and fixed by adjusting an upper bracket B6 and a lower bracket B8, a second stepping motor C51 drives a driving roller C52 to rotate so as to drive a rolling ring C56 to rotate, in the process, a polishing wheel C57 performs circumferential polishing on the bar to be polished, meanwhile, the rolling ring C56 drives a driven roller C61 to rotate, the rotation of the driven roller C61 serves as a power source to drive a gear pump C60 to work, the gear pump sprays polishing liquid to a polishing position, and the polishing speed and the liquid spraying speed are automatically matched; the first step motor C1 drives power lead screw C3 and rotates and drives slide C7 side-to-side movement thereby treating polishing the action of carrying out the axial polishing of bar, thereby swing support C58 follows the automatic slope of adaptability, polishing wheel C57 follows the automatic rotation of adaptability when meetting the diameter and changing accomplishes the polishing of whole stairstepping bar.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: it is to be understood that modifications may be made to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for some of the technical features thereof, but such modifications or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A stepped bar polishing device is characterized by comprising a base, wherein a left clamping mechanism, a polishing mechanism and a right clamping mechanism are sequentially fixed on the base from left to right, the left clamping mechanism and the right clamping mechanism are used for supporting and fixing a bar to be polished, the polishing mechanism comprises a left support and a right support, a guide rod is fixed between the left support and the right support, a power lead screw is rotatably connected with the guide rod, a first stepping motor used for driving the power lead screw to rotate is fixed on the base, a sliding seat is connected on the guide rod in a sliding manner, the power lead screw penetrates through the sliding seat and is in threaded connection with the sliding seat so as to drive the sliding seat to move left and right through the rotation of the power lead screw, and a polishing and spraying mechanism is mounted on the sliding seat;

2. A stepped bar polishing device according to claim 1, wherein the polishing wheel is fixed on the inner wall of the rolling ring through a swing support, the swing support comprises a frame seat fixed on the inner wall of the rolling ring, two swing arms are rotatably connected on the frame seat side by side through pin shafts, a mounting seat is hinged between the tail ends of the two swing arms, a knife shaft is rotatably connected in the mounting seat, the polishing wheel is fixedly connected at the tail end of the knife shaft, a tension spring is arranged between the frame seat and the mounting seat, and the polishing wheel is tightly attached to the circumferential surface of the bar to be polished under the tension of the tension spring.

3. A stepped bar stock polishing device as set forth in claim 2, wherein a gear pump is mounted on the slide base, the driven roller is drivingly connected to an input spindle of the gear pump, and a nozzle of an output pipe of the gear pump is located at a position of the bar stock to be polished for polishing.

4. A stepped billet polishing device according to claim 2, wherein the working surface of the polishing wheel is a wedge surface.

5. A stepped bar stock polishing device as claimed in any one of claims 1 to 4, wherein the left and right holding means are of identical construction and are collectively referred to as a holding means, the holding means includes a U-shaped support arm secured to the base, a lower arcuate bracket is provided between the top portions of the two support arms of the U-shaped support arm, an upper arcuate bracket is hinged to one end of the lower arcuate bracket and forms an annular bracket when the upper arcuate bracket is fastened to the lower arcuate bracket, the lower arcuate bracket is fixedly connected to the non-hinged end of the upper arcuate bracket by a bolt, a lower bracket is provided on the lower arcuate bracket, an upper bracket is provided on the upper arcuate bracket, and the lower bracket is fastened to the upper bracket for supporting and securing the bar stock to be polished.

6. A stepped bar stock burnishing apparatus as defined in claim 5, wherein rubber cushions are provided on the reaction surfaces of the upper and lower brackets.

7. The stepped bar stock polishing device as defined in claim 6, wherein the top of the upper bracket is universally connected with an upper threaded rod which upwardly passes through the upper arc-shaped bracket and is in threaded connection with the upper arc-shaped bracket; the bottom universal connection of lower carriage has threaded rod down, and threaded rod passes lower arc support downwards and with lower arc support threaded connection down.

8. A stepped bar stock polishing device as set forth in claim 7, wherein the two sub-support arms of the U-shaped support arm are elevating sub-arms.