CN221454635U - Pneumatic mute hand-held grinding device - Google Patents

Abstract

The utility model discloses a pneumatic mute handheld grinder which comprises a pneumatic component, wherein the pneumatic component is a mute motor, the output end of the mute motor is connected with a planetary reducer, the output end of the planetary reducer is provided with a gear box, a gear disc which is in transmission with the planetary reducer is arranged in the gear box, and the gear disc can be provided with a cutter box and can drive the cutter box and blades in the cutter box to rotate. The utility model has the advantages of increasing torque, increasing grinding stability, ensuring grinding quality and grinding precision, and the like.

Description

Pneumatic mute hand-held grinding device

Technical Field

The utility model relates to the technical field of metal electric welding, in particular to a pneumatic mute handheld coping device.

Background

Resistance spot welding is a type of welding method that uses resistance heat as an energy source. In general, a welding method is used in which workpieces are subjected to a certain electrode pressure and the contact surface between the two workpieces is melted by resistance heat generated when an electric current passes through the workpieces to effect connection. In the automobile industry, resistance welding is mostly adopted for assembly, so that high requirements are placed on the welding quality. In the spot welding process, the electrode is easy to deform, adhere or wear under the action of high temperature and welding pressure, so that the electrode is invalid, the spot welding quality and the vehicle body assembly quality are affected, the electrode is required to be polished, and the surface quality of the electrode is ensured.

In the prior art, a polishing device is adopted to polish the electrode, a knife box is arranged in the polishing device, a knife blade capable of polishing the electrode is arranged in the knife box, the knife box and the knife blade are driven to rotate by the polishing device, and then the surface of the electrode extending into the knife box is polished. In the existing coping device, the blade of the knife box is driven to rotate by the pneumatic component, so that the rotating speed is high, the torque is low and the coping quality is poor during coping.

Disclosure of utility model

The utility model aims to solve the technical problem of providing a pneumatic mute handheld coping device which improves the coping quality by improving the torque.

In order to solve the technical problems, the utility model comprises a pneumatic component, and is characterized in that: the pneumatic component is a mute motor, the output end of the mute motor is connected with a planetary reducer, a gear box is installed at the output end of the planetary reducer, a gear disc which is in transmission with the planetary reducer is installed in the gear box, and the gear disc can be used for installing a cutter box and driving the cutter box and blades in the cutter box to rotate.

After adopting above-mentioned structure, silence motor provides power, silence motor has reduced equipment noise simultaneously, drive gear rotation in the planetary reducer, planetary reducer reduces the rotational speed and improves moment of torsion, in the planetary reducer will power transmission to the gear box, through the moment of torsion in the increase input toothed disc, and then the moment of torsion when increasing the blade coping, install the sword box in the toothed disc, it is rotatory to drive the blade in sword box and the sword box through the toothed disc, alright coping is carried out to the electrode cap, in simple structure, when conveniently holding, make things convenient for the removal of coping ware, the site restriction of spot welding is not received to the efficiency of having improved the coping simultaneously, efficiency and coping quality have been improved.

The planetary reducer's output rigid coupling has the gear shaft, the cover is equipped with the helical gear on the gear shaft, install in the gear box with helical gear meshing driven gear plate, the gear plate level sets up, the gear plate center is equipped with the processing hole that can install the sword box stage property, through the meshing of helical gear and gear plate, with power transmission to the gear plate that the level set up, makes the gear plate rotate along the axis of vertical direction, and then blade disc and blade also rotate along the axis of vertical direction, the centre gripping and the coping of electrode of being convenient for.

The gear box comprises an upper cover and a lower cover, the gear plate is arranged between the upper cover and the lower cover, the gear plate comprises a plate body, an external gear and an internal gear are arranged on the upper surface of the plate body, the external gear is meshed with the bevel gear, an installation block is arranged on the lower end face of the plate body, the internal gear and the installation block are both positioned at the center of the plate body, a bearing is arranged between the internal gear and the upper cover, a bearing is arranged between the lower cover and the installation block, the machining hole vertically penetrates through the internal gear and the installation block, the gear plate is driven to rotate through the meshing of the external gear and the bevel gear, the gear plate is further fixed at the upper cover and the lower cover through the internal gear and the installation block, and vibration of the gear plate during rotation is avoided, so that the grinding precision is affected.

The utility model discloses a cutter box, including the fixed mounting that the cutter box was fixed, the fixed mounting that is equipped with on the machining hole pore wall, be equipped with two mounting grooves on the machining hole pore wall, two mounting grooves are symmetrical each other and set up along machining hole pore wall annular, the one end of mounting groove is equipped with the installing port that upwards extends to the up end, the length of mounting groove does not surpass half circular arc, is equipped with the piece of encircleing that can get into the mounting groove on the cutter box outer wall, gets into from the installing port through encircling the piece, slides in the mounting groove, and then confirms the position of locking cutter box, when easy to assemble, avoids the drop of cutter box, has guaranteed the stability of coping.

The gear box lower extreme fixedly connected with base, base lower extreme fixedly connected with adapter sleeve makes things convenient for the placing of coping ware through the base, when keeping flat the coping ware, avoids the crooked of coping ware, improves the stability of coping.

One side of the gear plate is fixedly connected with a handle, and the handle is convenient to hold and take, so that the operation of personnel is convenient, and the efficiency is improved.

In conclusion, the utility model has the advantages of increasing torque, increasing grinding stability, ensuring grinding quality and grinding precision, and the like.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic top view of the structure of FIG. 1;

FIG. 3 is a schematic view of the internal structure of the present utility model (the connector and the upper gearbox cover are not shown);

FIG. 4 is a schematic diagram of the planetary reducer, gear shaft, helical gear and gear disk drive;

FIG. 5 is a schematic diagram of a gear plate configuration;

Detailed Description

As shown in fig. 1-3, the present utility model includes a pneumatic component, a transmission component, and a gearbox 3. For convenience of description, let the left side of fig. 1 be left, the right side be right, the front side of fig. 1 be inward perpendicular to the paper surface, and the rear side be backward perpendicular to the paper surface. The pneumatic component is a pneumatic mute motor 1, the pneumatic mute motor 1 is driven to provide power to drive the rotating component, and meanwhile noise is reduced. The transmission part comprises a connecting body and a planetary reducer 2 arranged in the connecting body, the output end of the planetary reducer 2 is connected with a gear box 3, a knife box for grinding electrodes can be arranged in the gear box 3, and a knife blade is arranged in the knife box. The pneumatic mute motor 1 transmits power to the planetary reducer 2, the planetary reducer 2 reduces the rotating speed of the grinding device, increases the torsion, and drives the cutter box to rotate through the transmission of the gear box 3, so as to drive the blade to rotate, and the electrode on the upper side is ground. The whole structure is simple and convenient, the movement is convenient, the position limitation is avoided, and the polishing efficiency of the electrode is improved.

As shown in fig. 1-5, the gear box 3 comprises a lower cover 32 and an upper cover 31, a base 7 is fixedly connected to the lower side of the lower cover 32, and a connecting sleeve 8 is arranged at the lower end of the base 7. A gear disc 4 and a bevel gear 6 meshed with the gear disc 4 are arranged between an upper cover 31 and a lower cover 32 of the gear box 3, the bevel gear 6 is arranged on a gear shaft 5, and the left end of the gear shaft 5 is fixedly connected with the output end of the planetary reducer 2. The planetary reducer 2 drives the bevel gear 6 to rotate along the shaft, and the bevel gear 6 drives the gear disc 4 to rotate, so that the cutter box and the cutter blade in the gear disc 4 are driven to rotate.

As shown in fig. 3 to 5, the gear disk 4 includes a circular disk body 41, an external gear 42 and an internal gear 43 are provided on the upper end surface of the disk body 41, the external gear 42 is located radially outside the disk body 41, and the external gear 42 meshes with the helical gear 6. The inner gear 43 is located radially inward of the disk 41, and the upper end surfaces of the inner gear 43 and the outer gear 42 are equal in height and each higher than the upper surface of the disk 41. The number of teeth of the inner gear 43 and the outer gear 42 is equal, so that the inner gear 43 and the outer gear 42 are processed simultaneously, the processing and production process of the gear disc 4 are facilitated, the additional processing of the outer gear 42 is avoided, and the production efficiency is improved. The lower side of the disc 41 is provided with a mounting block 44, the mounting block 44 is positioned at the center of the disc 41, and the diameter of the outer surface of the mounting block 44 is equal to that of the inner gear 43. The gear plate 4 is provided with a processing hole 45, the processing hole 45 is positioned at the center of the gear plate 4 and penetrates through the inner gear 43 and the mounting block 44. Bearings are sleeved on the outer surface of the inner gear 43 and the outer surface of the mounting block 44. The lower cover 32 of the gear box 3 is provided with a stepped hole, and the stepped hole is positioned at the lower side of the machining hole 45 of the gear plate 4. The stepped hole of the lower cover 32 has an upper hole diameter larger than the lower hole, and the lower hole has the same diameter as the machining hole 45. A bearing is mounted between the upper hole of the stepped hole of the lower cover 32 and the mounting block 44 of the gear plate 4. The mounting block 44 is sleeved in the lower hole of the stepped hole of the lower cover 32, and the lower end surface of the mounting hole is leveled with the lower end surface of the lower cover 32. The upper cover 31 of the gear case 3 is provided with a through hole having a diameter not smaller than the diameter of the outer surface of the internal gear 43.

As shown in fig. 3 to 5, two mounting slots 411 are provided on the wall of the processing hole 45 of the gear disc 4, and the two mounting slots 411 are symmetrical to each other along the axis. The mounting slot 411 surrounds the wall of the processing hole 45, and then the mounting slot 411 is arc-shaped, and the length of the wall of the ring slot of the mounting slot 411 is smaller than that of one half of the processing hole 45. The two mounting hole walls are prevented from penetrating, and the mounting slot 411 is provided with a mounting opening 412 extending to the upper end surface of the gear plate 4. The outer side wall of the cutterhead is provided with a surrounding block which can enter the mounting groove 411 and rotate along the mounting groove 411 to lock, and the mounting groove 411 is used for fixing the up-down position of the cutterhead. The inner gear 43 is provided with a bolt hole, when the surrounding block of the cutterhead enters the innermost part of the mounting slot 411, the blade of the cutterhead is fixedly connected with the gear disc 4 through bolt fixing, so that the stability of the cutterhead is ensured, and the accuracy of electrode machining is further ensured.

As shown in fig. 1-3, the handle 9 is installed on the right side of the gear box 3, the handle 9 comprises a mounting section and a holding section, two grooves are formed in the mounting section, the grooves are respectively clamped on the gear box 3 and the base 7 on the lower side of the gear box 3, the handle 9 is fixed through bolts after clamping, the handle 9 is convenient to hold and take, personnel operation is facilitated, and efficiency is improved. In this embodiment, the handle 9 is located on the right side of the gearbox 3, maintaining balance.

Claims (6)

1. Pneumatic silence hand-held type coping ware, it includes pneumatic component, characterized by: the pneumatic component is a mute motor (1), the output end of the mute motor (1) is connected with a planetary reducer (2), a gear box (3) is arranged at the output end of the planetary reducer (2), a gear disc (4) which is driven by the planetary reducer (2) is arranged in the gear box (3), and the gear disc (4) can be used for installing a cutter box and driving the cutter box and blades in the cutter box to rotate.

2. The pneumatic mute hand-held grinder of claim 1, wherein: the planetary reducer is characterized in that a gear shaft (5) is fixedly connected to the output end of the planetary reducer (2), a bevel gear (6) is sleeved on the gear shaft (5), a gear disc (4) meshed with the bevel gear (6) is installed in the gear box (3), the gear disc (4) is horizontally arranged, and a machining hole (45) capable of installing a tool box prop is formed in the center of the gear disc (4).

3. The pneumatic mute hand-held grinder of claim 2, wherein: the gear box (3) comprises an upper cover (31) and a lower cover (32), the gear disc (4) is installed between the upper cover (31) and the lower cover (32), the gear disc (4) comprises a disc body (41), an outer gear (42) and an inner gear (43) are arranged on the upper surface of the disc body (41), the outer gear (42) is meshed with the bevel gear (6), an installation block (44) is arranged on the lower end face of the disc body (41), the inner gear (43) and the installation block (44) are both located at the center of the disc body (41), a bearing is installed between the inner gear (43) and the upper cover (31), a bearing is installed between the lower cover (32) and the installation block (44), and a machining hole (45) vertically penetrates through the inner gear (43) and the installation block (44).

4. A pneumatic mute hand-held grinder as claimed in claim 3, wherein: two mounting slots (411) are formed in the wall of the machining hole (45), the two mounting slots (411) are mutually symmetrical and are annularly arranged along the wall of the machining hole (45), one end of each mounting slot (411) is provided with a mounting opening (412) extending upwards to the upper end face, and the length of each mounting slot (411) is not more than half an arc.

5. The pneumatic mute hand-held grinder of claim 1, wherein: the lower end of the gear box (3) is fixedly connected with a base (7), and the lower end of the base (7) is fixedly connected with a connecting sleeve (8).

6. The pneumatic mute hand-held grinder of claim 1, wherein: one side of the gear disc (4) is fixedly connected with a handle (9).