An electric engraving pen suitable for micro-engraving processing

Abstract

The present invention provides an electric engraving pen suitable for micro-carving, belonging to the field of electromechanical technology. It includes a pen tube, a rotating shaft and a tool head tooling. The inner cavity of the pen tube is divided into an installation cavity and a storage cavity by a partition. A mobile power supply is arranged in the storage cavity. A push block is slidably connected to one end of the pen head in the installation cavity. The rotating shaft is rotatably connected to the push block. A rotor is fixedly arranged at the inner end of the rotating shaft. The outer end of the rotating shaft is fixedly connected to the tool head tooling. A stator is fixedly arranged at one end of the installation cavity away from the pen head. The stator is a cylindrical structure with a winding wound thereon. The winding is electrically connected to the mobile power supply. A permanent magnet group adapted to the winding is arranged on the rotor. The rotor can be inserted in the stator. A reset spring is connected between the push block and the partition. A multi-speed switch that can adjust the current value of the winding is arranged between the mobile power supply and the winding. The present invention has the advantages of high precision and easy operation.

Description

Technical Field

[0001] The invention belongs to the field of electromechanical technology and relates to an electric engraving pen suitable for micro-engraving processing. Background Art

[0002] The engraving pen is used for processing small-sized stones, wood and other raw materials. The rotation speed of the existing engraving pen is not controllable. Moreover, the existing engraving pen blade is not retractable. In the actual processing process, when roughly engraving, it is hoped that the handle connected to the blade head is longer to obtain a better field of view and make the processing easier. When engraving tiny parts, the handle connected to the blade head needs to be shorter in order to more accurately control the position of the blade head to improve the processing accuracy. At the same time, in order to meet the needs of engraving accuracy and engraving of different materials, the rotation speed of the blade head needs to be controllable, and it is best to be able to be easily controlled within the full range. Summary of the invention

[0003] The purpose of the present invention is to provide an electric engraving pen suitable for micro-carving processing in view of the above-mentioned problems existing in the prior art. The technical problem to be solved by the present invention is how to improve the application range and processing convenience of the micro-carving pen.

[0004] The object of the present invention can be achieved through the following technical solutions: an electric engraving pen suitable for micro-carving processing, characterized in that it includes a pen tube, a rotating shaft and a tool head fixture, the inner cavity of the pen tube is divided into an installation cavity and a storage cavity by a partition, a mobile power supply is arranged in the storage cavity, a push block is slidably connected to one end of the pen head in the installation cavity, the rotating shaft is rotatably connected to the push block, a rotor is fixedly arranged at the inner end of the rotating shaft, the outer end of the rotating shaft is fixedly connected to the tool head fixture, a stator is fixedly arranged at one end of the installation cavity away from the pen head, the stator is a cylindrical structure wound with a winding, the winding is electrically connected to the mobile power supply, a permanent magnet group adapted to the winding is arranged on the rotor, the rotor can be inserted in the stator, and a reset spring is connected between the push block and the partition;

[0005] A multi-stage switch capable of adjusting the current value flowing into the winding is arranged between the mobile power source and the winding.

[0006] Furthermore, a sleeve is rotatably connected to the rotating shaft, and the sleeve is slidably connected to the pen tube. An insertion hole is provided at the pen head of the pen tube, and a limit block is inserted in the insertion hole. The limit block can be against the outer wall of the sleeve.

[0007] The sleeve is fixed outside the rotating shaft through a bearing. Pressing the limit block can make the rotating shaft and the sleeve move and limit in the axial direction, but the rotating shaft can rotate; the limit block is a cone with a small diameter at the outer end and a larger diameter at the inner end, so that it will not fall out of the socket.

[0008] During the processing, after the tool is installed on the tool fixture, the sleeve is manually pushed to insert the rotor into the stator, and the insertion depth is adjusted to adjust the speed of the shaft. After the adjustment is completed, press the limit block to fix the speed. After the tool handle length and speed are adjusted to the appropriate level, processing can begin.

[0009] In another case, the tool can be directly placed against the corresponding position of the object to be processed. By applying pressing force, the tool speed can be increased, and by reducing the pressing force, the tool speed can be reduced. In this case, a return spring can be used for buffering, which is suitable for the processing of holes and grooves.

[0010] In order to be able to adjust the rotation speed of the shaft when the handle is adapted to the length, a multi-speed switch can be used, that is, the current value of the winding is controlled so that the rotation speed can still be adjusted after the axial position of the shaft is fixed.

[0011] Windings and permanent magnet groups are common accessories of ordinary DC motors.

[0012] The micro-carving pen has a simple structure, the rotation speed can be controlled steplessly, and the processing methods are diverse. It is suitable for processing raw materials of different materials, and is also suitable for rough carving and fine carving. In fact, the smoother the change in the rotation speed, the higher the carving accuracy that can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the engraving pen when the rotor is located outside the stator.

[0014] Figure 2 It is a schematic diagram of the structure of the engraving pen when the rotor is located in the stator.

[0015] In the figure, 1. pen tube; 2. rotating shaft; 3. tooling for cutting head; 4. installation cavity; 5. storage cavity; 6. mobile power supply; 7. push block; 8. sleeve; 9. stator; 10. rotor; 11. reset spring; 12. limit block. DETAILED DESCRIPTION

[0016] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0017] like Figure 1 and Figure 2As shown, it includes a pen tube 1, a rotating shaft 2 and a tool head fixture 3. The inner cavity of the pen tube 1 is divided into an installation cavity 4 and a storage cavity 5 by a partition. A mobile power source 6 is arranged in the storage cavity 5. A push block 7 is slidably connected to one end of the installation cavity 4 close to the pen head. The rotating shaft 2 is rotatably connected to the push block 7. A rotor is fixedly arranged at the inner end of the rotating shaft 2. The outer end of the rotating shaft 2 is fixedly connected to the tool head fixture 3. A stator 9 is fixedly arranged at one end of the installation cavity 4 away from the pen head. The stator 9 is a cylindrical structure with a winding wound thereon. The winding is electrically connected to the mobile power source 6. A permanent magnet group adapted to the winding is arranged on the rotor 10. The rotor 10 can be inserted in the stator 9. A reset spring 11 is connected between the push block 7 and the partition.

[0018] A multi-speed switch is provided between the mobile power source 6 and the winding, which can adjust the current value flowing into the winding.

[0019] A sleeve 8 is rotatably connected to the rotating shaft 2, and the sleeve 8 is slidably connected to the pen tube 1. An insertion hole is provided at the pen head of the pen tube 1, and a limit block 12 is inserted in the insertion hole. The limit block 12 can abut against the outer wall of the sleeve 8.

[0020] The sleeve 8 is fixed to the outside of the rotating shaft 2 by a bearing. Pressing the limit block 12 can move the rotating shaft 2 and the sleeve 8 in the axial direction, but the rotating shaft 2 can rotate; the limit block 12 is a cone with a small diameter at the outer end and a larger diameter at the inner end, so that it will not fall out of the socket.

[0021] During the processing, after the tool is installed on the tool fixture, the sleeve 8 is manually pushed to insert the rotor 10 into the stator 9, and the insertion depth is adjusted to adjust the rotation speed of the rotating shaft 2. After the adjustment is completed, press the limit block 12 to fix the rotation speed. After the tool handle length and rotation speed are adjusted to the appropriate level, the processing can begin.

[0022] In another case, the tool can be directly placed against the corresponding position of the object to be processed, and the rotation speed of the tool can be increased by applying pressing force, and the rotation speed of the tool can be reduced by reducing the pressing force. In this case, the reset spring 11 can be used for buffering, which is suitable for the processing of holes and grooves.

[0023] In order to be able to adjust the rotation speed of the shaft 2 when the handle is adapted to the length, a multi-speed switch can be used, that is, the current value of the winding is controlled so that the rotation speed can still be adjusted after the axial position of the shaft 2 is fixed.

[0024] Windings and permanent magnet groups are common accessories of ordinary DC motors.

[0025] The micro-carving pen has a simple structure, the rotation speed can be controlled steplessly, and the processing methods are diverse. It is suitable for processing raw materials of different materials, and is also suitable for rough carving and fine carving. In fact, the smoother the change in the rotation speed, the higher the carving accuracy that can be achieved.

[0026] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. An electric engraving pen suitable for micro-engraving processing, characterized in that: The invention comprises a pen tube (1), a rotating shaft (2) and a tool head fixture (3), wherein the inner cavity of the pen tube (1) is divided into an installation cavity (4) and a storage cavity (5) by a partition, wherein a mobile power source (6) is arranged in the storage cavity (5), wherein a push block (7) is slidably connected to one end of the installation cavity (4) close to the pen head, wherein the rotating shaft (2) is rotatably connected to the push block (7), wherein a rotor is fixedly arranged at the inner end of the rotating shaft (2), wherein the outer end of the rotating shaft (2) is fixedly connected to the tool head fixture (3), wherein a stator (9) is fixedly arranged at one end of the installation cavity (4) away from the pen head, wherein the stator (9) is a cylindrical structure wound with a winding, wherein the winding is electrically connected to the mobile power source (6), wherein a permanent magnet group adapted to the winding is arranged on the rotor (10), wherein the rotor (10) can be inserted into the stator (9), and a return spring (11) is connected between the push block (7) and the partition; A multi-speed switch capable of adjusting the current value flowing into the winding is provided between the mobile power source (6) and the winding; A sleeve (8) is rotatably connected to the rotating shaft (2), and the sleeve (8) is slidably connected to the pen tube (1). A plug hole is provided at the pen head of the pen tube (1), and a limit block (12) is inserted into the plug hole. The limit block (12) can abut against the outer wall of the sleeve (8); the limit block (12) is in the shape of a cone with a small outer end diameter and a large inner end diameter.

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