Handheld pneumatic chamfering machine

Abstract

The utility model discloses a handheld pneumatic chamfering machine which comprises a chamfering machine body, a pneumatic mechanism and a transmission mechanism, the chamfering machine body comprises a shell, a main handle and an auxiliary handle, a shock absorber is arranged at the bottom of the main handle, a rubber coating layer is connected to the outer surface of the auxiliary handle in a sleeved mode, and the pneumatic mechanism is connected with the transmission mechanism in a sleeved mode. The pneumatic mechanism comprises an air inlet valve, an air pipe, a heating module, a pneumatic motor and an exhaust port, a silencer is fixedly connected in the exhaust port, the transmission mechanism comprises a transmission gear set, a reduction gear and a main shaft, and the transmission gear set is in transmission connection with an output shaft of the pneumatic motor. The main shaft is in transmission connection with the transmission gear set through a reduction gear, and a cutter is fixed to the bottom end of the main shaft. The handheld pneumatic chamfering machine is advanced in design and compact in structure, noise can be remarkably reduced, vibration transmitted to an operator can be reduced, fatigue generated by long-time operation of the operator can be relieved, and the situation that the interior of the chamfering machine is corroded due to moisture in compressed air can be effectively avoided.

Description

Technical Field

[0001] This utility model belongs to the field of chamfering machine technology, specifically relating to a handheld pneumatic chamfering machine. Background Technology

[0002] A handheld pneumatic chamfering machine is a portable tool powered by compressed air, primarily used for chamfering the edges of materials such as metal and plastic (removing burrs or creating bevels). The handheld pneumatic chamfering machine uses compressed air to drive a motor, which in turn rotates the cutting tool at high speed to complete the cutting process. Its portability and reliability make it widely used in metal processing, pipe installation, mold making, and other fields.

[0003] While handheld pneumatic chamfering machines offer advantages in portability and safety, they also have some inherent drawbacks. For example: 1. The pneumatic motor generates significant noise (up to 80-90 decibels) and vibrations at high speeds, which can easily lead to operator fatigue during prolonged use; 2. Moisture and impurities in the compressed air can cause internal corrosion, and in low-temperature environments, the moisture in the compressed air may freeze, leading to air circuit blockage or motor jamming. Therefore, there is an urgent need to design a handheld pneumatic chamfering machine to address these issues. Utility Model Content

[0004] The purpose of this invention is to provide a handheld pneumatic chamfering machine to solve the problems existing in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a handheld pneumatic chamfering machine, comprising:

[0006] The chamfering machine body includes a housing, a main handle fixed to the top of the housing, and a secondary handle fixed to one side of the housing. The bottom of the main handle is provided with a shock absorber, and the outer surface of the secondary handle is covered with a rubber coating.

[0007] A pneumatic mechanism, comprising an air inlet valve located at the rear of the housing, an air pipe connected to the air inlet valve, a heating module located on one side of the air inlet valve, a pneumatic motor located on one side of the heating module, and an exhaust port located at the bottom of the housing, wherein a silencer is fixedly connected inside the exhaust port.

[0008] The transmission mechanism includes a transmission gear set, a reduction gear, and a main shaft. The transmission gear set is connected to the output shaft of a pneumatic motor. The main shaft is connected to the transmission gear set via the reduction gear. A cutting tool is fixed at the bottom end of the main shaft.

[0009] Furthermore, a switch is provided on the top of the housing, the switch is electrically connected to the heating module, and a switch protective cover is slidably connected to one side of the switch.

[0010] Furthermore, the heating module has a rectangular hollow structure, with several guide plates arranged alternately inside the heating module, and several heating resistance wires provided on the side surface of the guide plates. A storage battery electrically connected to the heating resistance wires is provided at the bottom of the heating module.

[0011] Furthermore, the muffler has a tubular structure, with perforated plates fixed at both ends and filled with sound-absorbing material.

[0012] Furthermore, the main shaft is arranged vertically and connected to the housing via a bearing seat, with one end of the main shaft extending downwards to the outside of the housing.

[0013] Furthermore, a protective baffle is provided on one side of the blade, and the protective baffle is fixed to the bottom of the housing by a clamp.

[0014] Furthermore, the other end of the trachea is connected to an external air source.

[0015] The technical effects and advantages of this utility model are as follows: This handheld pneumatic chamfering machine has an advanced design, compact structure, is easy to use, and reliable operation. By installing a silencer at the exhaust port, noise can be significantly reduced. By installing a vibration damper at the main handle and a rubber covering layer at the auxiliary handle, vibration transmitted to the operator can be reduced, alleviating operator fatigue caused by long-term operation. By installing a heating module in the pneumatic mechanism, moisture in the compressed air can be dried, thereby effectively preventing internal corrosion of the chamfering machine caused by moisture in the compressed air, and also preventing air circuit blockage or motor jamming caused by moisture in the compressed air freezing in low-temperature environments. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a structural schematic diagram of the present invention from another angle;

[0018] Figure 3 This is a bottom view of the present invention;

[0019] Figure 4 This is a vertical sectional view of the present invention.

[0020] In the diagram: 100, main body of the chamfering machine; 101, housing; 102, main handle; 103, auxiliary handle; 104, shock absorber; 105, rubber coating layer; 106, switch; 107, switch protective cover; 200, pneumatic mechanism; 201, air inlet valve; 202, air pipe; 203, heating module; 2031, guide plate; 2032, heating wire; 2033, battery; 204, pneumatic motor; 205, exhaust port; 206, muffler; 300, transmission mechanism; 301, transmission gear set; 302, reduction gear; 303, main shaft; 304, cutting tool; 305, protective baffle. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] This utility model provides, for example Figure 1-4 The handheld pneumatic chamfering machine shown includes:

[0025] The chamfering machine body 100 includes a housing 101, a main handle 102 fixed to the top of the housing 101, and a secondary handle 103 fixed to one side of the housing 101. The bottom of the main handle 102 is provided with a vibration damper 104, and the outer surface of the secondary handle 103 is covered with a rubber covering layer 105, which can reduce the vibration transmitted to the operator and reduce the fatigue of the operator during long-term operation.

[0026] The pneumatic mechanism 200 includes an air inlet valve 201 located at the tail of the housing 101, an air pipe 202 connected to the air inlet valve 201, a heating module 203 located on one side of the air inlet valve 201, a pneumatic motor 204 located on one side of the heating module 203, and an exhaust port 205 located at the bottom of the housing 101. A silencer 206 is fixedly connected inside the exhaust port 205, which can effectively reduce the noise when the pneumatic motor 204 exhausts.

[0027] The transmission mechanism 300 includes a transmission gear set 301, a reduction gear 302, and a main shaft 303. The transmission gear set 301 is connected to the output shaft of the pneumatic motor 204. The main shaft 303 is connected to the transmission gear set 301 via the reduction gear 302. A cutting tool 304 is fixed at the bottom of the main shaft 303. Compressed air enters the pneumatic motor 204 and drives the motor blades to rotate, generating power. The pneumatic motor 204 drives the transmission gear set 301 to rotate. After the transmission gear set 301 is reduced in speed by the reduction gear 302, the torque is increased. The reduction gear 302 drives the main shaft 303 to rotate, which in turn drives the cutting tool 304 to rotate. The high-speed rotating cutting tool 304 contacts the edge of the workpiece and removes material by cutting or grinding, forming a smooth chamfer.

[0028] For example, see Figures 1-2 As shown, a switch 106 is provided on the top of the housing 101. The switch 106 is electrically connected to the heating module 203. A switch protective cover 107 is slidably connected to one side of the switch 106.

[0029] In this technical solution, pressing switch 106 can activate heating module 203 to dry and heat compressed air, thereby eliminating moisture in the compressed air. By setting switch protective cover 107, accidental activation of switch 106 can be effectively prevented, increasing safety.

[0030] For example, see Figure 4 As shown, the heating module 203 is a rectangular hollow structure. Several guide plates 2031 are arranged alternately inside the heating module 203. Several heating resistance wires 2032 are provided on the side surface of the guide plates 2031. A battery 2033 electrically connected to the heating resistance wires 2032 is provided at the bottom of the heating module 203.

[0031] In this technical solution, the outer surface of the heating resistance wire 2032 is also covered with a high-temperature resistant insulating material (such as ceramic), which can prevent short circuits caused by moisture to a certain extent. The guide plate 2031 can guide the compressed air to move back and forth, prolonging the contact time between the compressed air and the heating resistance wire 2032, thereby fully drying the moisture in the compressed air, avoiding internal corrosion of the chamfering machine caused by the moisture in the compressed air, and also preventing the moisture in the compressed air from freezing in low-temperature environments. The battery 2033 can provide power support for the heating resistance wire 2032, and the charging port of the battery 2033 extends to the outside of the housing 101 for convenient charging of the battery 2033.

[0032] For example, see Figures 1-3 As shown, the muffler 206 has a tubular structure, with perforated plates fixed at both ends and filled with sound-absorbing material.

[0033] In this technical solution, the porous structure of the perforated plate can disperse the high-speed airflow and reduce the noise generated by the exhaust impact. The sound-absorbing material (such as glass fiber or polyester fiber) filled inside can reduce noise by absorbing sound wave energy. The combination of the two can significantly reduce the noise generated during exhaust.

[0034] For example, see Figure 4 As shown, the spindle 303 is arranged in a vertical direction and is connected to the housing 101 through a bearing seat. One end of the spindle 303 extends downward to the outside of the housing 101.

[0035] In this technical solution, it is convenient to install the tool 304 at the bottom of the spindle 303 in the horizontal direction, so that chamfering operations can be easily performed when holding the main handle 102 or the auxiliary handle 103.

[0036] For example, see Figure 2 As shown, a protective baffle 305 is provided on one side of the cutting tool 304, and the protective baffle 305 is fixed to the bottom of the housing 101 by a clamp.

[0037] In this technical solution, by setting a protective baffle 305, it can not only prevent fingers from accidentally touching the cutting tool 304 during operation, but also prevent metal chips from flying onto people during processing, thus improving safety.

[0038] For example, the other end of the trachea 202 is connected to an external air source (not shown in the figure).

[0039] In this technical solution, it is convenient to provide air source support for the operation of the handheld pneumatic chamfering machine. The external air source can be an air compressor that can continuously and stably provide compressed air, or a lightweight high-pressure air cylinder (such as a carbon fiber air cylinder) can be used as a mobile air source to improve portability.

[0040] Working principle: When using this handheld pneumatic chamfering machine, first connect to an external air source through air pipe 202, then turn on switch 106 and open air inlet valve 201. Compressed air enters heating module 203 through air pipe 202. Heating module 203 heats the compressed air and dries the moisture in it. The dried compressed air enters pneumatic motor 204 and drives motor blades to rotate to generate power. The rotational power drives main shaft 303 to rotate through transmission mechanism 300, which in turn drives tool 304 to rotate at high speed. The high-speed rotating tool contacts the edge of the workpiece and removes material by cutting or grinding to form a smooth chamfer. The pressure of compressed air drops after driving motor blades, and exhaust gas is discharged through exhaust port 205. When the exhaust gas is discharged, it passes through silencer 206 to reduce noise. This handheld pneumatic chamfering machine features an advanced design, compact structure, ease of use, and reliable operation. By installing a silencer 206 at the exhaust port 205, noise can be significantly reduced. By installing a vibration damper 104 at the main handle 102 and a rubber covering layer 105 at the auxiliary handle 103, vibration transmitted to the operator can be reduced, alleviating operator fatigue during prolonged operation. By installing a heating module 203 in the pneumatic mechanism 200, moisture in the compressed air can be dried, effectively preventing internal corrosion caused by moisture in the compressed air, and also preventing airway blockage or motor jamming caused by moisture freezing in the compressed air in low-temperature environments.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A hand-held pneumatic chamfering machine, characterized in that include: The chamfering machine body (100) includes a housing (101), a main handle (102) fixed to the top of the housing (101), and a secondary handle (103) fixed to one side of the housing (101). The bottom of the main handle (102) is provided with a shock absorber (104), and the outer surface of the secondary handle (103) is covered with a rubber covering layer (105). A pneumatic mechanism (200) includes an air inlet valve (201) disposed at the tail of the housing (101), an air pipe (202) connected to the air inlet valve (201), a heating module (203) disposed on one side of the air inlet valve (201), a pneumatic motor (204) disposed on one side of the heating module (203), and an exhaust port (205) disposed at the bottom of the housing (101), wherein a silencer (206) is fixedly connected inside the exhaust port (205); The transmission mechanism (300) includes a transmission gear set (301), a reduction gear (302), and a main shaft (303). The transmission gear set (301) is connected to the output shaft of the pneumatic motor (204). The main shaft (303) is connected to the transmission gear set (301) through the reduction gear (302). A cutting tool (304) is fixed at the bottom end of the main shaft (303).

2. The hand-held pneumatic chamfering machine of claim 1, wherein: A switch (106) is provided on the top of the housing (101). The switch (106) is electrically connected to the heating module (203). A switch protective cover (107) is slidably connected to one side of the switch (106).

3. The handheld pneumatic chamfering machine according to claim 1, characterized in that: The heating module (203) is a rectangular hollow structure. Several guide plates (2031) are arranged alternately inside the heating module (203). Several heating resistance wires (2032) are provided on the side surface of the guide plate (2031). A battery (2033) electrically connected to the heating resistance wires (2032) is provided at the bottom of the heating module (203).

4. The hand-held pneumatic chamfering machine of claim 1, wherein: The silencer (206) is a tubular structure, with perforated plates fixed at both ends and filled with sound-absorbing material.

5. The hand-held pneumatic chamfering machine of claim 1, wherein: The main shaft (303) is arranged in a vertical direction and is connected to the housing (101) through a bearing seat. One end of the main shaft (303) extends downward to the outside of the housing (101).

6. The hand-held pneumatic chamfering machine of claim 1, wherein: The cutting tool (304) has a protective baffle (305) on one side, and the protective baffle (305) is fixed to the bottom of the housing (101) by a clamp.

7. The hand-held pneumatic chamfering machine of claim 1, wherein: The other end of the trachea (202) is connected to an external air source.

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