Right-angle type pneumatic engraving and grinding machine

Abstract

The utility model provides a right-angle type pneumatic carving and grinding machine. According to the technical scheme, the rotor and the valve switch are arranged in the shell, the air pipe connector is arranged at the tail of the shell, a pressing handle for pressing the valve switch is arranged on the shell, a right-angle base is arranged at the front end of the shell and is in threaded connection with the shell through a first locking nut and a double-end locking ring, and the right-angle base is connected with the air pipe connector through a second locking nut. A right-angle seat is arranged on the rotor, a vertically arranged output shaft is arranged in an inner cavity of the right-angle seat, the output shaft is rotatably connected with the right-angle seat through bearings at the two ends, a first bevel gear is fixedly arranged on the output shaft, a second bevel gear matched with the first bevel gear is arranged at the top of the rotor, and a chuck assembly is arranged at the top of the output shaft.

Description

Technical Field

[0001] The utility model belongs to the field of pneumatics, and in particular relates to a pneumatic grinder. Background Art

[0002] Pneumatic grinder, also known as air grinder, is a tool widely used in the finishing and surface polishing of the mold industry. It is mainly used for tasks such as removing stains, metal mold correction, and aluminum casting grinding. Pneumatic grinder uses air as a power source. It has the characteristics of high speed, small size, and high output power, making it an ideal tool for various complex mold polishing and grinding tasks, especially for grinding, deburring, grinding and polishing operations. The output shaft and chuck of traditional pneumatic grinders are usually set horizontally, which is mainly suitable for the processing of some workpiece surfaces that are not restricted by space. However, it is difficult for traditional pneumatic grinders to adapt to some small spaces and corner locations. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a right-angle pneumatic grinder.

[0004] In order to solve the above problems, the technical solution adopted by the utility model includes: a shell, a rotor and a valve switch arranged in the shell, and an air pipe joint arranged at the rear of the shell, the shell is provided with a pressure handle for pressing the valve switch, and is characterized in that: a right-angle seat is provided at the front end of the shell, and the right-angle seat is threadedly connected to the shell through a first locking nut and a double-headed locking ring, a vertically arranged output shaft is provided in the inner cavity of the right-angle seat, and the output shaft is rotatably connected to the right-angle seat through bearings at both ends, a first bevel gear is fixedly provided on the output shaft, a second bevel gear connected to the first bevel gear is provided on the top of the rotor, and a chuck assembly is provided on the top of the output shaft.

[0005] The right-angle pneumatic grinder is characterized in that: the chuck assembly includes a chuck inserted into the output shaft and a chuck nut threadedly connected to the outside of the output shaft, the chuck includes a cylindrical portion, a clamping jaw circumferentially arranged above the cylindrical portion, a conical portion and a first annular positioning step are provided on the upper end of the clamping jaw, a conical opening adapted to the conical portion is provided on the top of the output shaft, and a second annular positioning step is provided on the top of the chuck nut for positioning and matching with the first annular positioning step.

[0006] The right-angle pneumatic grinder is characterized in that the output shaft is covered with shock-proof cotton.

[0007] The right-angle pneumatic grinder is characterized in that a positioning seat is provided at the front end of the rotor, and after the double-head locking ring is tightened, the front end of the positioning seat is inserted into the double-head locking ring.

[0008] The right-angle pneumatic grinder is characterized in that an oil filling hole is provided on the right-angle seat.

[0009] The right-angle pneumatic grinder is characterized in that the air pipe joint is connected to the shell through an adapter, and an air inlet filter is provided in the adapter.

[0010] The right-angle pneumatic grinder is characterized in that a leather pad is provided on the shell.

[0011] The right-angle pneumatic grinder is characterized in that the right-angle seat fixes the bearing at the upper end through a second locking nut.

[0012] The beneficial effects of the right-angle pneumatic grinder of the utility model are as follows: the output shaft and the chuck are arranged at right angles, and because the right-angle seat is threadedly connected to the shell body through the first locking nut and the double-headed locking ring, the installation position of the output shaft and the chuck relative to the pressure handle can be adjusted, so it can better cope with the processing and surface polishing of some workpieces with small spaces and special positions.

[0013] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a cross-sectional view of the utility model angle pneumatic engraving and grinding machine;

[0015] Figure 2 It is an exploded view of the utility model angle pneumatic engraving and grinding machine;

[0016] Figure 3 It is a structural schematic diagram of the chuck of the utility model. DETAILED DESCRIPTION

[0017] like Figures 1 to 3 As shown, the right-angle pneumatic grinder of the utility model comprises a housing 1, a rotor 2 and a valve switch 3 arranged in the housing 1, and an air pipe joint 4 arranged at the tail of the housing 1. The housing 1 is provided with a pressure handle 28 for pressing the valve switch 3. A right-angle seat 5 is provided at the front end of the housing 1, and the right-angle seat 5 is threadedly connected to the housing 1 through a first locking nut 6 and a double-headed locking ring 7. During installation, the right-angle seat 5 is first rotated to a suitable angle, and then the first locking nut 6 and the double-headed locking ring 7 are tightened. A vertically arranged output shaft 8 is provided in the inner cavity of the right-angle seat 5, and the output shaft 8 is rotatably connected to the right-angle seat 5 through bearings 9 at both ends. A first bevel gear 10 is fixedly provided on the output shaft 8, a second bevel gear 11 meshing with the first bevel gear 10 is provided on the top of the rotor 2, and a chuck assembly 12 is provided on the top of the output shaft 8.

[0018] Preferably, the chuck assembly 12 includes a chuck 13 inserted into the output shaft 8 and a chuck nut 14 threadedly connected to the outside of the output shaft 8, the chuck 13 includes a cylindrical portion 15, a clamping jaw 16 circumferentially arranged above the cylindrical portion 15, a conical portion 17 and a first annular positioning step 18 are provided at the upper end of the clamping jaw 16, a conical mouth 19 adapted to the conical portion 17 is provided at the top of the output shaft 8, and a second annular positioning step 20 is provided at the top of the chuck nut 14 to be positioned and matched with the first annular positioning step 18. After the mounting shaft of the grinding disc is installed in the chuck 13, the clamping jaw 16 can be fixed by tightening the chuck nut 14 to make it close to the center. It has the advantages of easy installation and good stability.

[0019] Preferably, the output shaft 8 is covered with shockproof cotton 21 to reduce vibration and noise of the output shaft 8. The shockproof cotton 21 is a material used to reduce vibration and impact, and is a well-known material.

[0020] Preferably, a positioning seat 22 is provided at the front end of the rotor 2, and the positioning seat 22 is fixed to the rotor 2 by a screw. After the double-headed locking ring 7 is tightened, the front end of the positioning seat 22 is inserted into the double-headed locking ring 7. Then, the double-headed locking ring 7 can play the role of the rotor 2 at the same time, so as to simplify the installation structure.

[0021] Preferably, an oil filling hole 23 is provided on the right-angle seat 5. Lubricating oil can be added to the two bevel gears through the oil filling hole 23 for easy maintenance.

[0022] Preferably, the air pipe joint 4 is connected to the housing 1 through an adapter 24, and an air inlet filter 25 is provided in the adapter 24 to filter the intake air.

[0023] Preferably, a leather pad 26 is provided on the housing 1 to prevent slipping.

[0024] Preferably, the right-angle seat 5 fixes the bearing 9 at the upper end through a second locking nut 27 , and a screwdriver slot is provided on the bearing 9 to facilitate the disassembly and assembly of the bearing 9 .

[0025] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention are included in the protection scope of the present invention.

Claims

1. A right-angle pneumatic engraving and grinding machine, comprising a housing (1), a rotor (2) and a valve switch (3) arranged in the housing (1), and an air pipe joint (4) arranged at the rear of the housing (1), wherein the housing (1) is provided with a pressing handle (28) for pressing the valve switch (3), characterized in that: A right-angle seat (5) is provided at the front end of the housing (1), and the right-angle seat (5) is threadedly connected to the housing (1) via a first locking nut (6) and a double-headed locking ring (7); a vertically arranged output shaft (8) is provided in the inner cavity of the right-angle seat (5), and the output shaft (8) is rotatably connected to the right-angle seat (5) via bearings (9) at both ends; a first bevel gear (10) is fixedly provided on the output shaft (8); a second bevel gear (11) meshing with the first bevel gear (10) is provided at the top of the rotor (2); and a chuck assembly (12) is provided at the top of the output shaft (8).

2. The right-angle pneumatic grinder according to claim 1, characterized in that: The chuck assembly (12) comprises a chuck (13) inserted into the output shaft (8) and a chuck nut (14) threadedly connected to the outside of the output shaft (8); the chuck (13) comprises a cylindrical portion (15), a clamping jaw (16) circumferentially arranged above the cylindrical portion (15); a conical portion (17) and a first annular positioning step (18) are provided at the upper end of the clamping jaw (16); a conical opening (19) adapted to the conical portion (17) is provided at the top of the output shaft (8); and a second annular positioning step (20) adapted to be positioned and matched with the first annular positioning step (18) is provided at the top of the chuck nut (14).

3. The right-angle pneumatic grinder according to claim 1, characterized in that: The output shaft (8) is sleeved with shock-proof cotton (21).

4. The right-angle pneumatic grinder according to claim 1, characterized in that: A positioning seat (22) is provided at the front end of the rotor (2); after the double-headed locking ring (7) is tightened, the front end of the positioning seat (22) is inserted into the double-headed locking ring (7).

5. The right-angle pneumatic grinder according to claim 1, characterized in that: The right-angle seat (5) is provided with an oil filling hole (23).

6. The right-angle pneumatic grinder according to claim 1, characterized in that: The air pipe joint (4) is connected to the housing (1) via an adapter (24), and an air inlet filter (25) is provided in the adapter (24).

7. The right-angle pneumatic grinder according to claim 1, characterized in that: A leather pad (26) is provided on the housing (1).

8. The right-angle pneumatic grinder according to claim 1, characterized in that: The right-angle seat (5) fixes the bearing (9) at the upper end via a second locking nut (27).

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