CN214449917U

CN214449917U - Stepless speed regulation miniature carving pen with buffering function

Info

Publication number: CN214449917U
Application number: CN202023169592.XU
Authority: CN
Inventors: 徐碧玉; 周国鹏; 黄金花; 郑志鹏
Original assignee: Hubei University of Science and Technology
Current assignee: Hubei University of Science and Technology
Priority date: 2020-12-24
Filing date: 2020-12-24
Publication date: 2021-10-22
Anticipated expiration: 2030-12-24

Abstract

The utility model provides a stepless speed regulation miniature carving pen with buffer function belongs to electromechanical technical field. The pen holder comprises a pen tube, a rotating shaft and a tool bit tool, wherein an inner cavity of the pen tube is divided into an installation cavity and a storage cavity by a partition plate, a mobile power supply is arranged in the storage cavity, one end, close to a pen point, in the installation cavity is connected with a push block in a sliding mode, the rotating shaft is connected to the push block in a rotating mode, a rotor is fixedly arranged at the inner end of the rotating shaft, the outer end of the rotating shaft is fixedly connected with the tool bit tool, one end, far away from the pen point, of the installation cavity is fixedly provided with a stator, and a winding is electrically connected with the mobile power supply; the stator comprises a plurality of windings connected in parallel, the rotor comprises a telescopic structure formed by a plurality of cylindrical permanent magnet groups, an avoiding space allowing the stretched rotor to be inserted is arranged in the stator, and a return spring is connected between each permanent magnet group and the push block. The utility model has the advantages of high engraving precision and the like.

Description

Stepless speed regulation miniature carving pen with buffering function

Technical Field

The utility model belongs to the technical field of electromechanics, a stepless speed regulation miniature carving pen with buffer function is related to.

Background

The carving pen is used for processing small-size stone materials, wood and other raw materials, the rotating speed of the existing carving pen is not controllable, moreover, the tool bit of the existing carving pen does not have a buffering function, and in the actual processing process, the tool bit is in rigid contact with a part to be processed, so that the part to be processed is easy to damage to the material to be processed, and if a stone ware is processed, the material is easy to crack.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above-mentioned problem that exists to current technique, provide a stepless speed regulation miniature carving pen with buffer function, the utility model aims to solve the technical problem how to make the cutter have buffer function, and can realize stepless speed regulation.

The purpose of the utility model can be realized by the following technical proposal: a stepless speed regulation miniature carving pen with a buffering function is characterized by comprising a pen tube, a rotating shaft and a tool bit tool, wherein the inner cavity of the pen tube is divided into an installation cavity and a storage cavity by a partition plate, a mobile power supply is arranged in the storage cavity, one end, close to a pen point, in the installation cavity is connected with a push block in a sliding mode, the rotating shaft is connected to the push block in a rotating mode, a rotor is fixedly arranged at the inner end of the rotating shaft, the outer end of the rotating shaft is fixedly connected with the tool bit tool, one end, far away from the pen point, of the installation cavity is fixedly provided with a stator, the stator comprises a plurality of windings which are connected in parallel, and the windings are electrically connected with the mobile power supply;

the rotor comprises a telescopic structure consisting of a plurality of cylindrical permanent magnet groups, an avoiding space allowing the stretched rotor to be inserted is arranged in the stator, and a return spring is connected between each permanent magnet group and the push block.

Furthermore, a sleeve is connected to the rotating shaft in a rotating mode, the sleeve is connected to the pen tube in a sliding mode, a jack begins to be arranged at the pen point of the pen tube, a limiting block is inserted into the jack, and the limiting block can abut against the outer wall of the sleeve.

When each reset spring is in a natural state, each permanent magnet group contracts to the shortest, when a cutter is pressed, each permanent magnet group can be matched with the corresponding winding after being stretched, each winding and the corresponding permanent magnet group can form a motor structure for driving the rotor to rotate, each permanent magnet group is fixed on a framework, the diameter of each framework is gradually increased from inside to outside, and the adjacent frameworks are connected through splines and only can stretch out and draw back and cannot rotate.

When the permanent magnet group is in a stretching state, the rotating speed of the rotor is fastest, otherwise, the rotating speed is reduced, in the machining process, the reset springs can achieve buffering of the cutter, the rotating speed can be changed accordingly according to different pressing forces, the micro-carving machine is suitable for adjusting machining strength in the micro-carving process, the rotating speed and the torque of the cutter are large due to large pressing forces, rough machining is achieved, and the rotating speed and the torque of the cutter are small due to small pressing forces, so that fine machining is achieved.

Because the position of rotor is in basically holding near the position, make whole micro-carving pen vibration less, can improve the precision, because the longitudinal range of motion of extending structure is little, make the whole size of micro-carving pen less, or can provide the portable power source of bigger size to make its continuation of the journey bigger, or can make the weight of whole micro-carving pen less, in order to improve the light and handy nature of operation. After all, the heavier the miniature carving pen is, the more fatigue is easy to occur in the operation process.

The sleeve is fixed outside the rotating shaft through a bearing, and the rotating shaft and the sleeve can move and limit in the axis direction by pressing the limiting block, but the rotating shaft can rotate; the limiting block is a cone with a small outer end diameter and a large inner end diameter, so that the limiting block cannot fall out of the jack.

When the rotor is in a contraction state, only the outermost permanent magnet group is involved, the torque is small, the rotating speed is small, and the rotor is in a standby state; according to the press process, the permanent magnet group is involved and increased, the torque of the rotor is increased, and due to the fact that the telescopic amount of the rotating shaft is small, when each reset spring provides buffering, the range of the cutter moving along the axial direction is not large, and then the whole micro-carving pen is small in length, small in size and light in weight.

Drawings

Fig. 1 is a schematic structural diagram of the miniature carving pen.

Fig. 2 is an enlarged view of a portion a in fig. 1.

In the figure, 1, a pen tube; 2. a rotating shaft; 3. tool bit tooling; 4. a mounting cavity; 5. a mobile power supply; 6. a push block; 7. a rotor; 8. a stator; 10. a return spring; 11. a sleeve; 12. And a limiting block.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1 and 2, the pen holder comprises a pen tube 1, a rotating shaft 2 and a tool bit tool 3, an inner cavity of the pen tube 1 is divided into an installation cavity 4 and a storage cavity by a partition plate, a mobile power supply 5 is arranged in the storage cavity, one end of the installation cavity 4 close to a pen point is connected with a push block 6 in a sliding mode, the rotating shaft 2 is rotatably connected to the push block 6, a rotor 7 is fixedly arranged at the inner end of the rotating shaft 2, the outer end of the rotating shaft 2 is fixedly connected with the tool bit tool 3, one end of the installation cavity 4 far away from the pen point is fixedly provided with a stator 8, and a winding is electrically connected with the mobile power supply 5;

the stator 8 comprises a plurality of windings connected in parallel, the rotor 7 comprises a telescopic structure formed by a plurality of cylindrical permanent magnet groups, an avoiding space allowing the stretched rotor 7 to be inserted is arranged in the stator 8, and a return spring 10 is connected between each permanent magnet group and the push block 6.

The rotating shaft 2 is rotatably connected with a sleeve 11, the sleeve 11 is slidably connected to the pen tube 1, a plug hole is formed in the pen point of the pen tube 1, a limiting block 12 is inserted into the plug hole, and the limiting block 12 can abut against the outer wall of the sleeve 11.

When each reset spring 10 is in a natural state, each permanent magnet group contracts to the shortest, when a cutter is pressed, each permanent magnet group can be matched with the corresponding winding after being stretched, each winding and the corresponding permanent magnet group can form a motor structure for driving the rotor 7 to rotate, each permanent magnet group is fixed on a framework, the diameter of each framework is gradually increased from inside to outside, and the adjacent frameworks are connected through splines and only can stretch and retract but not rotate.

When the permanent magnet group is in a stretching state, the rotating speed of the rotor 7 is fastest, otherwise, the rotating speed is reduced, in the processing process, the reset springs 10 can achieve buffering of the cutter, the rotating speed can be changed accordingly according to different pressing forces, the micro-carving machine is suitable for adjusting the processing strength in the micro-carving process, the rotating speed and the torque of the cutter are large due to the large pressing force, rough processing is achieved, and the rotating speed and the torque of the cutter are small due to the small pressing force, so that fine processing is achieved.

Because the position of the rotor 7 is basically near the holding position, the vibration of the whole micro-carving pen is small, the precision can be improved, and because the longitudinal moving range of the telescopic structure is small, the whole size of the micro-carving pen is small, or a mobile power supply 5 with a larger size can be provided, so that the endurance of the micro-carving pen is larger, or the weight of the whole micro-carving pen is small, so that the portability of the operation is improved. After all, the heavier the miniature carving pen is, the more fatigue is easy to occur in the operation process.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. The stepless speed regulation miniature carving pen with the buffering function is characterized by comprising a pen tube (1), a rotating shaft (2) and a tool bit tool (3), wherein an inner cavity of the pen tube (1) is divided into an installation cavity (4) and a storage cavity by a partition plate, a mobile power supply (5) is arranged in the storage cavity, one end, close to a pen point, in the installation cavity (4) is connected with a push block (6) in a sliding mode, the rotating shaft (2) is connected to the push block (6) in a rotating mode, a rotor (7) is fixedly arranged at the inner end of the rotating shaft (2), the outer end of the rotating shaft (2) is fixedly connected with the tool bit tool (3), one end, far away from the pen point, of the installation cavity (4) is fixedly provided with a stator (8), the stator (8) comprises a plurality of windings connected in parallel, and the windings are electrically connected with the mobile power supply (5);

the rotor (7) comprises a telescopic structure formed by a plurality of cylindrical permanent magnet groups, an avoiding space allowing the stretched rotor (7) to be inserted is arranged in the stator (8), and a return spring (10) is connected between each permanent magnet group and the push block (6).

2. The stepless speed regulating miniature carving pen with the buffering function according to claim 1, characterized in that a sleeve (11) is rotatably connected to the rotating shaft (2), the sleeve (11) is slidably connected to the pen tube (1), a jack is formed at the pen point of the pen tube (1), a limiting block (12) is inserted into the jack, and the limiting block (12) can abut against the outer wall of the sleeve (11).