CN216883019U

CN216883019U - Grinding wheel transmission device of centerless grinding machine

Info

Publication number: CN216883019U
Application number: CN202123297044.XU
Authority: CN
Inventors: 张建东; 冯水如
Original assignee: Ningbo Renhe Machinery Bearing Co ltd
Current assignee: Ningbo Renhe Machinery Bearing Co ltd
Priority date: 2021-12-24
Filing date: 2021-12-24
Publication date: 2022-07-05
Anticipated expiration: 2031-12-24

Abstract

The utility model discloses a grinding wheel transmission device of a centerless grinding machine, which comprises a motor, a driving wheel, a synchronous belt, a belt pulley, a transmission shaft and a grinding wheel shaft, wherein the driving wheel is coaxially fixed at the output end of the motor, the synchronous belt is wound on the driving wheel and the belt pulley, the transmission shaft is coaxially and fixedly connected with the belt pulley, the grinding wheel shaft is coaxially and fixedly connected with a grinding wheel, a first gear is coaxially fixed at the end part of the transmission shaft, a second gear is coaxially fixed at the end part of the grinding wheel shaft, the first gear and the second gear have the same size and are opposite in position, a first chain is coaxially wound on the outer circumference of the first gear, a second chain is coaxially wound on the outer circumference of the second gear, and the first chain is fixedly connected with the second chain. The grinding wheel transmission device realizes transmission connection between the transmission shaft and the grinding wheel shaft in a transmission mode of matching the gear and the chain, the gear and the chain are simple to assemble, do not interfere with each other, are reliable in transmission, are not easy to wear, are small in vibration, do not influence the machining precision of a grinding machine, and are long in service life.

Description

Grinding wheel transmission device of centerless grinding machine

Technical Field

The utility model relates to a transmission device, in particular to a grinding wheel transmission device of a centerless grinding machine.

Background

The grinding wheel on the existing medium-large centerless grinding machine is driven by a motor, the motor transmits power to a belt pulley through a synchronous belt, and the belt pulley drives a grinding wheel shaft connected with the grinding wheel to rotate through a transmission shaft connected with the belt pulley, so that the rotation of the grinding wheel is realized. The transmission shaft and the sand wheel shaft are respectively provided with a coupler, and power is transmitted through the two couplers. The coupling on the grinding wheel shaft is provided with two grooves, the coupling on the transmission shaft is provided with two raised bosses, and the two bosses are respectively embedded into the two grooves. In the course of the work, epaxial shaft coupling of transmission drives the epaxial shaft coupling of emery wheel rotatory, and two shaft couplings need bear great start-up torsion, for convenient dismouting and guarantee the assembly required precision, must leave the clearance about 2mm between two shaft couplings. The two couplers are assembled by matching the bosses and the grooves, the structural design is simple, the torsion is large when the motor is started, but the boss part and the groove part are easy to wear, and vibration and noise can be generated in the transmission process due to the existence of a gap between the two couplers, so that the processing precision of equipment is seriously influenced. The problems of abrasion and slipping can occur generally after about two years of use, and even the lug boss is separated from the groove, so that equipment is damaged.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of providing a grinding wheel transmission device of a centerless grinding machine, which has reliable transmission and long service life and aims at overcoming the defects of the prior art.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model provides a centerless grinder's grinding wheel transmission, includes motor, action wheel, hold-in range, belt pulley, transmission shaft and emery wheel axle, the action wheel coaxial fixation be in the output of motor, the hold-in range around establishing the action wheel with the belt pulley on, the transmission shaft with the coaxial fixed connection of belt pulley, emery wheel axle and the coaxial fixed connection of emery wheel, the coaxial first gear that is fixed with of tip of transmission shaft, the coaxial second gear that is fixed with of tip of emery wheel axle, first gear with the size identical and the position of second gear relative, the coaxial first chain that is equipped with of winding of outer circumference of first gear, the coaxial second chain that is equipped with of outer circumference of second gear, first chain with second chain fixed connection.

The transmission device changes the original coupling connection mode between the transmission shaft and the grinding wheel shaft into a transmission mode of matching the gear and the chain, a first gear and a second gear which have the same size and are opposite in position are respectively arranged on the transmission shaft and the grinding wheel shaft, a first chain and a second chain are respectively arranged on the outer circumferences of the first gear and the second gear, and power is transmitted through the first chain and the second chain which are fixedly connected. The gear and the chain are simple to assemble, do not interfere with each other, are reliable in transmission, are not easy to wear, are small in vibration, do not affect the machining precision of the grinding machine, and are long in service life.

Preferably, the first chain and the second chain respectively comprise a plurality of equally spaced columns, and gear teeth of a gear are inserted between two adjacent columns along the same circumferential direction.

Preferably, the first chain and the second chain are fixedly connected through rivets. Furthermore, the positions of the cylinders of the first chain are in one-to-one correspondence with the positions of the cylinders of the second chain, and each cylinder of the first chain is coaxially connected with one corresponding cylinder of the second chain through one rivet. The rivet connection mode has good fixing effect, can effectively utilize the space of the chain, and improves the compactness of the whole structure of the chain and the reliability of chain transmission.

Preferably, the inboard an organic whole of hold-in range be provided with parallel multichannel rack, the outer circumference of belt pulley be equipped with parallel multichannel tooth's socket, multichannel rack inlay respectively and locate multichannel tooth's socket. The original synchronous belt adopts an independent triangular belt, the torsion is large when a motor is started, the synchronous belt is easy to slip, the synchronous belt is generally used for about 2-3 months, uneven deformation and abrasion are generated, vibration and noise are caused, adverse effects are caused to the machining precision of a grinding machine, and the synchronous belt is required to be replaced about every 3 months. The transmission device adopts the integrated multi-tooth synchronous belt, is matched with the belt pulley with tooth grooves, can enhance the friction torque between the synchronous belt and the belt pulley, effectively avoids the synchronous belt from slipping, reduces noise and vibration, reduces the abrasion of the synchronous belt and prolongs the service life of the synchronous belt.

Preferably, the transmission shaft is mounted on the first box, and the grinding wheel shaft is mounted on the second box. The first box body and the second box body play a role in supporting and protecting the transmission shaft and the sand wheel shaft.

Preferably, a key pin is connected between the outer circumference of the transmission shaft and the inner circumference of the pulley.

Compared with the prior art, the utility model has the following advantages: the grinding wheel transmission device of the centerless grinding machine realizes transmission connection between the transmission shaft and the grinding wheel shaft in a transmission mode of matching the gear and the chain, the gear and the chain are simple to assemble, do not interfere with each other, are reliable in transmission, are not easy to wear, have small vibration, do not influence the machining precision of the grinding machine, and have long service life.

Drawings

FIG. 1 is a front view of a grinding wheel driving unit of a centerless grinding machine in an embodiment;

FIG. 2 is an enlarged view of FIG. 1 at A;

FIG. 3 is a cross-sectional view taken along line B-B of FIG. 2;

FIG. 4 is a cross-sectional view taken at C-C of FIG. 3;

fig. 5 is an enlarged cross-sectional view taken along line D-D of fig. 1.

Detailed Description

The utility model is described in further detail below with reference to the accompanying examples.

The grinding wheel transmission device of the centerless grinding machine of the embodiment, as shown in fig. 1 to 5, comprises a motor 1, a driving wheel 2, a synchronous belt 3, a belt pulley 4, a transmission shaft 5 and a grinding wheel shaft 6, wherein the driving wheel 2 is coaxially fixed at the output end of the motor 1, the synchronous belt 3 is wound on the driving wheel 2 and the belt pulley 4, the transmission shaft 5 is coaxially and fixedly connected with the belt pulley 4, a key pin 53 is connected between the outer circumference of the transmission shaft 5 and the inner circumference of the belt pulley 4, the grinding wheel shaft 6 is coaxially and fixedly connected with a grinding wheel 7, the transmission shaft 5 is installed on a first box 52, the grinding wheel shaft 6 is installed on a second box 62, a first gear 51 is coaxially fixed at the end of the transmission shaft 5, a second gear 61 is coaxially fixed at the end of the grinding wheel shaft 6, the first gear 51 and the second gear 61 have the same size and opposite position, a first chain 81 is coaxially wound around the outer circumference of the first gear 51, a second chain 82 is coaxially wound around the outer circumference of the second gear 61, the first chain 81 and the second chain 82 are fixedly connected by a rivet 83.

In this embodiment, each of the first and

second chains

81 and 82 includes a plurality of equally spaced columns 84, the teeth 9 of a gear are inserted between two adjacent columns 84 along the same circumferential direction, the columns 84 of the first chain 81 correspond to the columns 84 of the second chain 82 in one-to-one correspondence, and each of the columns 84 of the first chain 81 is coaxially connected to a corresponding column 84 of the second chain 82 via a rivet 83.

In this embodiment, a plurality of parallel racks 31 are integrally disposed on the inner side of the synchronous belt 3, a plurality of parallel tooth grooves 41 are disposed on the outer circumference of the belt pulley 4, and the plurality of racks 31 are respectively embedded in the plurality of tooth grooves 41.

The grinding wheel transmission device transmits power through the first chain 81 and the second chain 82 which are fixedly connected, the gear and the chain are simple to assemble, the mutual interference is avoided, the transmission is reliable, the abrasion is not easy to occur, the vibration is small, the machining precision of the grinding machine is not influenced, and the service life is more than 5 years.

Claims

1. A grinding wheel transmission device of a centerless grinding machine, which comprises a motor, a driving wheel, a synchronous belt, a belt pulley, a transmission shaft and a grinding wheel shaft, the driving wheel is coaxially fixed at the output end of the motor, the synchronous belt is wound on the driving wheel and the belt pulley, the transmission shaft is coaxially and fixedly connected with the belt pulley, the grinding wheel shaft is coaxially and fixedly connected with the grinding wheel, it is characterized in that a first gear is coaxially fixed at the end part of the transmission shaft, a second gear is coaxially fixed at the end part of the grinding wheel shaft, the first gear and the second gear have the same size and are opposite in position, a first chain is coaxially wound on the outer circumference of the first gear, and a second chain is coaxially wound on the outer circumference of the second gear, and the first chain is fixedly connected with the second chain.

2. The apparatus as claimed in claim 1, wherein said first chain and said second chain each comprise a plurality of equally spaced columns, and wherein a gear tooth of a gear is interposed between two adjacent columns in the same circumferential direction.

3. The grinding wheel drive unit of a centerless grinding machine of claim 2, wherein said first chain and said second chain are fixedly connected via rivets.

4. The grinding wheel transmission device of a centerless grinding machine as claimed in claim 3, wherein the positions of the cylinders of the first chain and the cylinders of the second chain correspond one to one, and each cylinder of the first chain is coaxially connected with a cylinder of the corresponding second chain through a rivet.

5. The grinding wheel transmission device of the centerless grinding machine as claimed in any one of claims 1 to 4, wherein a plurality of parallel racks are integrally arranged on the inner side of the synchronous belt, a plurality of parallel tooth grooves are arranged on the outer circumference of the belt pulley, and the plurality of racks are respectively embedded in the plurality of tooth grooves.

6. The grinding wheel drive of a centerless grinding machine of claim 1, wherein the drive shaft is mounted to a first housing and the wheel spindle is mounted to a second housing.

7. The apparatus as claimed in claim 6, wherein a key pin is connected between an outer circumference of the drive shaft and an inner circumference of the pulley.