Improved pneumatic grinding tool

Abstract

The utility model discloses an improved pneumatic grinding tool, which relates to the field of pneumatic tools and comprises a transmission mechanism, the transmission mechanism comprises a turbine shell, a turbine is arranged on the inner wall of the turbine shell, an eccentric rotating shaft is arranged on the side wall of the turbine in a penetrating manner, a crank is arranged on the outer wall of the turbine shell, and a main shaft is arranged on the inner wall of the other end of the crank. The other end of the outer wall of the main shaft is sleeved with a linear bearing, and the outer wall of the linear bearing is sleeved with a spherical pipe. When external high-pressure gas serves as a driving source and is guided into the air cylinder, the turbine in the air cylinder is driven to drive the spherical pipe and the linear bearing on the grinding main shaft to be converted into power for the transmission mechanism to do reciprocating and left-right movement so as to execute universal grinding machining actions.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of pneumatic tools, in particular to an improved pneumatic grinding tool. Background Art

[0002] Pneumatic tools are tools that use compressed air or gas to generate power to perform tasks. They are widely used in industrial production and offer advantages such as improved efficiency, durability, and safety. Pneumatic tools use a compressor or air pump to supply compressed air, which is then fed into the tool's pneumatic system. The pneumatic system within the tool utilizes the energy of the compressed air to generate power, driving the tool to perform its specific tasks. Specifically, compressed air enters the cylinder, pushing the piston, which in turn transmits power to the tool through a mechanical transmission mechanism.

[0003] In the prior art, pneumatic grinding tools all achieve grinding through a single rotational motion or reciprocating motion. Especially in small handheld grinding tools, users require the grinding tools to have higher flexibility so as to adapt to complex workpieces and surfaces to be ground. Utility Model Content

[0004] Based on this, the purpose of the present invention is to provide an improved pneumatic grinding tool to solve the technical problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] An improved pneumatic grinding tool includes a transmission mechanism, the transmission mechanism includes a turbine housing, a turbine is provided on the inner wall of the turbine housing, an eccentric rotating shaft is passed through the side wall of the turbine, a crank is provided on the outer wall of the turbine housing, a main shaft is provided on the inner wall of the other end of the crank, a linear bearing is provided on the other end of the outer wall of the main shaft, and a spherical tube is provided on the outer wall of the linear bearing.

[0007] Preferably, plastic steel covers are provided at both ends of the spherical tube, a fixed ball seat is sleeved on one end of the outer wall of the spherical tube, and a fixed seat is sleeved on the other end of the outer wall of the spherical tube.

[0008] Preferably, the outer wall of the main shaft is provided with a direction fixing seat.

[0009] Preferably, the crank is fixed by a bolt and nut assembly, and the turbine housing is fixed by a screw and nut assembly.

[0010] Preferably, rotating bearings and nuts are symmetrically provided at both ends of the eccentric rotating shaft.

[0011] In summary, this technical solution has the following beneficial effects:

[0012] In the utility model, a single compressed air is used as a driving source. Through the structural distribution of the transmission mechanism, the turbine in the cylinder is driven, which drives the spherical tube and linear bearing on the grinding spindle, and is converted into power for the transmission mechanism to perform reciprocating and left-right motion, thereby performing the universal grinding processing action.

[0013] In addition, the entire device has a compact structure and reasonable distribution, which improves the user's convenience in grinding processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is the overall assembly diagram of the pneumatic grinding tool of the present utility model;

[0015] Figure 2 This is an exploded view of the transmission mechanism portion of the present invention;

[0016] Figure 3 It is an exploded view of the transmission mechanism part of the utility model.

[0017] Description of the drawings: 10. Transmission mechanism; 11. Turbine housing; 12. Turbine; 13. Eccentric shaft; 14. Crank; 15. Main shaft; 16. Linear bearing; 17. Spherical tube; 18. Bolt and nut assembly; 19. Screw and nut assembly; 131. Rotating bearing; 151. Direction fixing seat; 171. Plastic steel cover; 172. Fixed ball seat; 173. Fixed seat. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0019] Example

[0020] like Figures 1 to 3 As shown, the transmission mechanism 10 includes a turbine housing 11, an inner wall of the turbine housing 11 is provided with a turbine 12, a side wall of the turbine 12 is penetrated by an eccentric shaft 13, an outer wall of the turbine housing 11 is provided with a crank 14, an inner wall of the other end of the crank 14 is provided with a main shaft 15, an outer end of the main shaft 15 is sleeved with a linear bearing 16, and an outer wall of the linear bearing 16 is sleeved with a universal wear-resistant tube 17;

[0021] It should be noted that, in this embodiment, an eccentric rotating shaft 13 is provided in the closed cylinder 11, and a turbine 12 is fixedly provided at the center position of the outer wall of the eccentric rotating shaft 13, wherein a plurality of blade-shaped turbine blades are distributed in an annular shape on the outer edge of the turbine 12 to receive the high-pressure gas introduced from the air inlet on the cylinder 11, driving the eccentric part of the side edge of the eccentric rotating shaft 13 to perform eccentric motion, and a main shaft 15 is provided outside the cylinder 11 to drive the linear bearing 16 on the main shaft 15 to convert it into power for the transmission mechanism to perform reciprocating motion.

[0022] A main shaft 15 is provided outside the cylinder 11. The power for the reciprocating motion is also transmitted to the spherical tube 17 and linear bearing 16 on the front end of the main shaft 15. The eccentric portion of the side edge of the eccentric rotating shaft 13 performs eccentric motion, driving the linear bearing 16 and spherical tube 17 on the main shaft 15, and also driving the power for the left and right motion.

[0023] The eccentric portion of the eccentric shaft 13 moves eccentrically, driving the linear bearing 16 and the spherical tube 17 on the main shaft 15, and converting the power into reciprocating and left-right motion of the transmission mechanism. The two powers are integrated to perform the universal grinding operation.

[0024] like Figures 1 to 3 As shown, plastic-steel covers 171 are provided at both ends of the universal wear-resistant tube 17, a fixed ball seat 172 is provided at one end of the outer wall of the universal wear-resistant tube 17, and a fixed seat 173 is provided at the other end of the outer wall of the universal wear-resistant tube 17; a direction fixing seat 151 is provided on the outer wall of the main shaft 15; the crank 14 is fixed by a bolt and nut assembly 18, and the turbine housing 11 is fixed by a screw and nut assembly 19; rotating bearings 131 and nuts are symmetrically provided at both ends of the eccentric shaft 13.

[0025] It should be noted that, in this embodiment, the crank 14 is limited and fixed by two sets of bolt and nut cap assemblies 18. Similarly, the screw and nut assembly 19 fixes the turbine housing 11.

[0026] The plastic steel cover 171, the fixed ball seat 172 and the fixed seat 173 are all sleeved on the outer wall of the spherical tube 17 to play the role of limiting support. Since the turbine blades of the turbine 12 are curved, the high-pressure gas can be reduced from flowing around, forming better grinding power.

[0027] The working principle of this utility model is:

[0028] An eccentric shaft 13 is set in the closed cylinder 11, and a turbine 12 is fixed at the center of the outer wall of the eccentric shaft 13. Among them, a plurality of blade-shaped turbine blades are distributed in an annular shape on the outer edge of the turbine 12 to receive the high-pressure gas introduced from the air inlet on the cylinder 11, driving the eccentric part of the side edge of the eccentric shaft 13 to move eccentrically. A main shaft 15 is set outside the cylinder 11, which drives the linear bearing 16 on the main shaft 15 and converts it into power for the transmission mechanism to perform reciprocating motion.

[0029] A main shaft 15 is provided outside the cylinder 11. The power for the reciprocating motion is also transmitted to the spherical tube 17 and linear bearing 16 on the front end of the main shaft 15. The eccentric portion of the side edge of the eccentric rotating shaft 13 performs eccentric motion, driving the linear bearing 16 and spherical tube 17 on the main shaft 15, and also driving the power for the left and right motion.

[0030] The eccentric portion of the eccentric shaft 13 moves eccentrically, driving the linear bearing 16 and the spherical tube 17 on the main shaft 15, and converting the power into reciprocating and left-right motion of the transmission mechanism. The two powers are integrated to perform the universal grinding operation.

[0031] The above embodiments are only for illustrating the technical idea of the present invention and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the present invention.

Claims

1. An improved pneumatic grinding tool, comprising a transmission mechanism (10), characterized in that The transmission mechanism (10) includes a turbine housing (11), the inner wall of the turbine housing (11) is provided with a turbine (12), the side wall of the turbine (12) is penetrated by an eccentric rotating shaft (13), the outer wall of the turbine housing (11) is provided with a crank (14), the inner wall of the other end of the crank (14) is provided with a main shaft (15), the outer wall of the other end of the main shaft (15) is provided with a linear bearing (16), and the outer wall of the linear bearing (16) is provided with a spherical tube (17).

2. An improved pneumatic grinding tool according to claim 1, characterized in that: The two ends of the spherical tube (17) are provided with plastic steel covers (171), one end of the outer wall of the spherical tube (17) is sleeved with a fixed ball seat (172), and the other end of the outer wall of the spherical tube (17) is sleeved with a fixed seat (173).

3. The improved pneumatic grinding tool according to claim 1, characterized in that: The outer wall of the main shaft (15) is sleeved with a direction fixing seat (151).

4. The improved pneumatic grinding tool according to claim 1, characterized in that: The crank (14) is fixed by a bolt and nut assembly (18), and the turbine housing (11) is fixed by a screw and nut assembly (19).

5. The improved pneumatic grinding tool according to claim 1, characterized in that: Rotating bearings (131) and nuts are symmetrically provided at both ends of the eccentric rotating shaft (13).

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