Guide wheel driving and transmission mechanism of centerless grinding machine

Abstract

The utility model discloses a guide wheel driving and transmission mechanism of a centerless grinding machine. The guide wheel driving and transmission mechanism comprises an upper sliding plate, a servo driving motor, a worm and gear speed reducer, a chain transmission shaft, a driving chain wheel, a transmission chain, a driven chain wheel and a guide wheel main shaft, the upper sliding plate provides a guide wheel spindle seat to be mounted on a sliding plate mounting surface in the centerless grinding machine and is matched with a feed screw to adjust the feed distance of a guide wheel; the servo driving motor is connected with the worm and gear reducer, the worm and gear reducer is connected with the chain transmission shaft, the chain transmission shaft is installed in the bearing supporting seat through the front bearing set and the rear bearing set, the driving chain wheel is installed at the tail end of the chain transmission shaft and connected with the transmission chain, and the transmission chain is connected with the driven chain wheel. The driven chain wheel is installed on the guide wheel spindle to drive the guide wheel. The transmission device is stable in transmission and small in assembling and machining difficulty, and the purposes of stable transmission, cost reduction and efficiency improvement are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a centerless grinding machine guide wheel drive and transmission mode technical field, concretely relates to a centerless grinding machine guide wheel drive and transmission mechanism. BACKGROUND

[0002] With the rapid development of mechanical industry, centerless grinding machine plays an indispensable role in the field of rotary body finishing, and the stability of guide wheel spindle transmission during workpiece grinding greatly influences the roundness, form and location tolerance, surface roughness and other dimensional accuracy of centerless grinding machine.

[0003] Therefore, the utility model provides a centerless grinding machine guide wheel drive and transmission mechanism. SUMMARY

[0004] The utility model discloses a centerless grinding machine guide wheel drive and transmission mechanism, which is stable in transmission, low in assembly and processing difficulty, and achieves the purposes of stable transmission, cost reduction and efficiency increase.

[0005] To solve the above technical problems, the utility model realizes the following technical scheme:

[0006] A centerless grinding machine guide wheel drive and transmission mechanism is suitable for the centerless grinding machine guide wheel drive and transmission mechanism, which comprises an upper slide plate, a servo drive motor, a worm and gear reducer, a chain transmission shaft, a driving sprocket, a transmission chain, a driven sprocket and a guide wheel spindle. The upper slide plate provides a guide wheel spindle seat installed on the slide plate mounting surface of the centerless grinding machine, and cooperates with the feed screw to realize the guide wheel adjustment feed distance. The servo drive motor is connected with the worm and gear reducer, the worm and gear reducer is connected with the chain transmission shaft, the chain transmission shaft is installed in the bearing support seat through the front bearing set and the rear bearing set, the chain transmission shaft is provided with the driving sprocket at the end, the driving sprocket is connected with the transmission chain, the transmission chain is connected with the driven sprocket, and the driven sprocket is installed on the guide wheel spindle to drive the guide wheel.

[0007] Further, the chain transmission shaft end face adopts an internal hexagonal cylindrical head screw to lock the driving sprocket pressing plate.

[0008] Further, the bearing support seat is provided with a bearing flange plate at the front end, the bearing support seat is made of HT300 cast iron and is processed after sufficient natural aging, and is processed by one-time clamping; the bearing flange plate is made of Q235 steel plate and is processed, and the installation surface is processed after being installed with the bearing support seat.

[0009] Further, the front bearing set and the rear bearing set are continuous 6008 deep groove ball bearings respectively.

[0010] Further, the rear bearing set and the driving sprocket are provided with a driving sprocket spacer sleeve. Further, the rear bearing set and the driving sprocket are provided with a driving sprocket spacer sleeve.

[0011] Further, the upper slide plate is provided with a chain transmission cover plate.

[0012] Further, the upper end of the guide wheel main shaft is provided with a main shaft transmission cover plate.

[0013] Further, the transmission chain adopts GB / T 1243-1997-12A single row chain as the transmission medium; and the transmission chain is externally provided with a tensioning structure of a tensioning adjusting screw and a tensioning adjusting block.

[0014] The utility model discloses the beneficial effect lies in:

[0015] 1, the utility model discloses a single stage chain drive, on the basis of the original main shaft structure, without affecting the core component guide wheel main shaft, under the premise of meeting the demand, certain versatility.

[0016] 2, the utility model discloses that the upper slide plate provides stable environment for the stable operation of guide wheel and sprocket chain transmission.

[0017] 3, the utility model discloses two groups of continuous 6008 deep groove ball bearings as transmission shaft support structure, relative to the use angle contact bearing realizes the purpose of cost reduction and benefit increase under the premise of guaranteeing accuracy.

[0018] 4, the utility model discloses standard GB / T 1243-1997-12A single row chain as transmission medium, guarantees stability, also has versatility and interchangeability simultaneously. DRAWINGS

[0019] Fig. 1 It is the front structure schematic diagram of the utility model;

[0020] Fig. 2 It is the local section schematic diagram of the utility model;

[0021] Fig. 3 It is the side structure schematic diagram of the utility model;

[0022] Mark in drawing: 1-guide wheel, 2-guide wheel main shaft seat, 3-guide wheel main shaft, 4-upper slide plate, 5-turbine worm reducer, 6-servo drive motor, 7-main shaft transmission cover plate, 8-chain transmission cover plate, 9-tensioning adjusting screw, 10-tensioning adjusting block, 11-driven sprocket, 12-transmission chain, 13-driving sprocket pressing plate, 14-driving sprocket, 15-driving sprocket spacer sleeve, 16-rear bearing group, 17-bearing support seat, 18-chain transmission shaft, 19-front bearing group, 20-bearing flange plate, 21-front rake angle adjusting screw. SPECIFIC IMPLEMENTATION

[0023] The following, in conjunction with the accompanying drawings and preferred embodiments, details the specific implementation, structure, features, and effects of a guide wheel drive and transmission mechanism for a centerless grinder according to the present invention.

[0024] See Figs. 1-3 This utility model proposes a guide wheel drive and transmission mechanism for a centerless grinder, applicable to guide wheel drive and transmission mechanisms in centerless grinders. It includes an upper slide plate 4, a servo drive motor 6, a worm gear reducer 5, a chain drive shaft 18, a drive sprocket 14, a transmission chain 12, a driven sprocket 11, and a guide wheel spindle 3. The upper slide plate 4 provides a guide wheel spindle seat 2 for mounting on the slide plate of the centerless grinder, cooperating with a feed screw to adjust the feed distance of the guide wheel. The servo drive motor 6 is connected to the worm gear reducer 5, which is connected to the chain drive shaft 18. The chain drive shaft 18 is mounted in a bearing support seat 17 via a front bearing assembly 19 and a rear bearing assembly 16. The drive sprocket 14 is mounted at the end of the chain drive shaft 18, connected to the transmission chain 12, which is connected to the driven sprocket 11. The driven sprocket 11 is mounted on the guide wheel spindle 3 to drive the guide wheel 1.

[0025] The end face of the chain drive shaft 18 is locked with the drive sprocket pressure plate 13 using an internal hexagonal head screw.

[0026] The bearing support seat 17 is provided with a bearing flange plate 20 at its front end. The bearing support seat 17 is made of HT300 cast iron and is fully natural aged before being clamped and machined in one go. The bearing flange plate 20 is made of Q235 steel plate and the mounting surface is machined after it is installed with the bearing support seat 17. This ensures that the perpendicularity between the bearing support seat 17 and the bearing flange plate 20 meets the usage requirements.

[0027] The front bearing assembly 19 and the rear bearing assembly 16 are both continuous 6008 deep groove ball bearings.

[0028] A drive sprocket spacer 15 is provided between the rear bearing assembly 16 and the drive sprocket 14;

[0029] The upper slide plate 4 is equipped with a chain drive cover plate 8. This facilitates the inspection of the chain and sprocket status during maintenance and repair, reducing maintenance difficulty.

[0030] The upper end of the guide wheel spindle 3 is provided with a spindle drive cover plate 7. This facilitates the inspection of the chain and sprocket status during maintenance and repair, reducing maintenance difficulty.

[0031] The transmission chain 12 uses a single-row chain conforming to GB / T 1243—1997-12A as the transmission medium to ensure the chain's versatility and interchangeability; the external structure of the transmission chain 12 adopts a tensioning structure consisting of a tension adjusting screw 9 and a tension adjusting block 10.

[0032] When assembling, the bearing flange plate 20 and the bearing support base 17 are first locked by the hexagonal head screw through the mounting hole, then the front bearing group 19, the rear bearing group 16 and the chain transmission shaft 18 are sequentially pressed into the bearing support base 17 through the bearing inner circle spacer, then the driving sprocket spacer 15 and the driving sprocket 14 are sequentially installed on the chain transmission shaft 18, and then the driving sprocket pressing plate 13 is locked on the end surface of the chain transmission shaft 18 by the hexagonal head screw;

[0033] After the above partial assembly is completed, the whole is assembled on the mounting surface of the bearing flange plate 20 on the side of the upper slide plate 4, the tension adjusting screw 9 is screwed into the tension threaded hole of the bearing flange plate 20, the tension adjusting block 10 is sequentially assembled to ensure smooth adjustment of the tension adjusting screw 9, and finally the worm reducer 5, the servo drive motor 6 and the transmission chain 12 are sequentially assembled to the position shown in the figure, and the guide roller driving and transmission mechanism is assembled.

[0034] In use, considering the actual use requirement of the centerless grinding machine, when the centerless grinding machine is used for through grinding, the front inclination angle needs to be adjusted, that is, the angle of the guide roller spindle base 2 is adjusted by the front inclination angle adjusting screw 21, and when the guide roller spindle 3 is adjusted to be in a non-horizontal position, the driven sprocket 11 has an axial force, and long-term use may cause axial displacement; in order to avoid this problem, when the centerless grinding machine is used for through grinding, after the front inclination angle is adjusted, the tension adjusting screw 9 needs to be appropriately adjusted to adjust the tension degree of the transmission chain 12, so as to avoid the axial displacement of the driven sprocket 11.

[0035] It can be understood by those skilled in the art that the bearing flange plate, the bearing support base mounting mode, the bearing support mode and the chain transmission mode mentioned in the utility model are components for executing one or more of the structures, operations, methods, measures and schemes described in the application. The components can be specially designed and manufactured for the required purpose, or known components or other devices in the mechanical industry can be used. Other unexplained parts involved in the utility model are the same as or realized by the prior art.

[0036] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Any modification, equivalent change and modification of the above embodiment according to the technical essence of the utility model still belong to the scope of the technical scheme of the utility model.

Claims

1. A guide wheel driving and transmission mechanism of a centerless grinding machine, suitable for a guide wheel driving and transmission mechanism of a centerless grinding machine, characterized in that: It includes the upper slide plate (4), servo drive motor (6), worm gear reducer (5), chain transmission shaft (18), driving sprocket (14), transmission chain (12), driven sprocket (11), guide wheel spindle (3); the upper slide plate (4) provides guide wheel spindle seat (2) installed in the centerless grinding machine slide plate mounting surface, cooperate with the lead screw to realize the guide wheel adjustment feed distance; servo drive motor (6) is connected with worm gear reducer (5), worm gear reducer (5) is connected with chain transmission shaft (18), chain transmission shaft (18) is installed in bearing support seat (17) through front bearing group (19), rear bearing group (16), chain transmission shaft (18) end installs driving sprocket (14), driving sprocket (14) is connected with transmission chain (12), transmission chain (12) is connected with driven sprocket (11), driven sprocket (11) is installed on guide wheel spindle (3) and drives guide wheel (1).

2. A guide wheel drive and transmission mechanism for a centerless grinding machine as defined in claim 1, wherein: The end surface of the chain transmission shaft (18) is locked by the driving sprocket pressing plate (13) with an internal hexagonal cylindrical head screw.

3. The trunnion drive and transmission mechanism for a centerless grinding machine of claim 1 wherein: The front end of the bearing support seat (17) is provided with a bearing flange plate (20), the bearing support seat (17) is made of HT300 cast iron and is processed after sufficient natural aging, and is processed by one-time clamping; the bearing flange plate (20) is made of Q235 steel plate and is processed, and the installation surface is processed after being installed with the bearing support seat (17).

4. The trunnion drive and transmission mechanism for a centerless grinding machine of claim 1 wherein: The front bearing group (19) and the rear bearing group (16) are continuous 6008 deep groove ball bearings.

5. The trunnion drive and transmission mechanism for a centerless grinding machine of claim 1 wherein: The rear bearing group (16) and the driving sprocket (14) are provided with a driving sprocket spacer sleeve (15).

6. A guide wheel drive and transmission mechanism for a centerless grinding machine as defined in claim 1 wherein: The upper slide plate (4) is provided with a chain transmission cover plate (8).

7. The trunnion drive and transmission mechanism for a centerless grinding machine of claim 1 wherein: The upper end of the guide wheel spindle (3) is provided with a spindle transmission cover plate (7).

8. The trunnion drive and transmission mechanism for a centerless grinding machine of claim 1 wherein: The transmission chain (12) uses GB / T 1243-1997-12A single row chain as the transmission medium; the transmission chain (12) is provided with a tensioning structure of tensioning adjusting screw (9) and tensioning adjusting block (10) on the outside.

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