CN217966537U - A high-precision support for the spindle of a grinding machine - Google Patents

Abstract

The utility model relates to a grinding machine, in particular to a high-precision support for the main shaft of the grinding machine. The inner ring is installed on the connecting shaft; the circlip, the circlip is fixed on the connecting shaft, and is located on one side of the bearing; the force ring, the force ring is fixed on the back cover, and connected with the outer ring of the bearing, and there are several adjustment holes on the force ring , the adjustment hole is arranged opposite to the outer ring of the bearing; and the adjustment screw is installed on the adjustment hole for pressing the outer ring of the bearing. Without changing the main components of the original spindle, the bracket eliminates the radial clearance of the spindle from the side by adding force rings, connecting rods and set screws to ensure the rotation accuracy of the spindle, thereby improving the machining accuracy of the spindle of the grinding machine bracket and reducing the number of modified parts , many standard parts, simple structure and low cost.

Description

A high-precision support for the spindle of a grinding machine

technical field

The utility model relates to a grinding machine, in particular to a high-precision support for the main shaft of the grinding machine.

Background technique

With the improvement of processing level and the progress of processing equipment, P4 precision in the bearing industry has become a common requirement. Guaranteeing the accuracy of the inner and outer raceway of the bearing is the key to the P4 precision. The grooves of the inner and outer rings of bearings generally require roundness within 0.005mm, roughness within 0.05mm, and contour within 0.003mm. The main shaft of the grinding machine support supports the rotation of the workpiece to ensure that the workpiece is processed in place. The higher the precision of the main shaft of the bracket, the higher the precision of the bearing. Ensuring high rotation accuracy of the bracket spindle is a problem that the industry has been solving. The conventional method is to use cylindrical roller bearings instead, but the processing is troublesome, the cost is increased, and the effect is not ideal. Or, if the fit clearance of the rear end bearing is changed to be small, the main shaft will heat up severely, and it will be stuck and stopped.

Utility model content

In order to solve the above problems, the utility model provides a high-precision support for the spindle of a grinding machine that eliminates the radial clearance of the spindle from the side and ensures the rotation accuracy of the spindle. The specific technical solution is:

A high-precision support for the main shaft of a grinder, including a back cover, and also includes: a connecting shaft, which is movably inserted into the connecting hole of the back cover, and connected to the shaft core; a bearing, the inner ring of which is mounted on On the connecting shaft; a circlip, the circlip is fixed on the connecting shaft and is located on one side of the bearing; a force ring, the force ring is fixed on the back cover, and is connected to the outer surface of the bearing Ring connection, the force applying ring is provided with a number of adjustment holes, the adjustment holes are set opposite to the outer ring of the bearing; and adjustment screws, the adjustment screws are installed on the adjustment holes, and are aligned with the adjustment holes One-to-one correspondence, used to compress the outer ring of the bearing.

Preferably, it further includes: a steel ball, the steel ball is located between the outer ring of the bearing and the adjusting screw.

Preferably, there are no less than three adjustment holes arranged in a circular array.

Preferably, the adjusting screw is a set screw with a flat end.

Compared with the prior art, the utility model has the following beneficial effects:

The utility model provides a high-precision support for the main shaft of a grinding machine, without changing the main components of the original main shaft, by adding a force ring, a connecting rod and a set screw to eliminate the radial play of the main shaft from the side, ensuring the rotation accuracy of the main shaft, thereby The machining accuracy of the main shaft of the grinding machine support is improved, the modified parts are few, the standard parts are many, the structure is simple, and the cost is low.

Description of drawings

Fig. 1 is the structural representation of the utility model.

detailed description

Now in conjunction with accompanying drawing, the utility model is further described.

As shown in FIG. 1 , a high-precision support for a grinding machine spindle includes a rear cover 2 , a connecting shaft 4 , a bearing 5 , a snap spring 6 , a force ring 3 , an adjusting screw 7 and a steel ball 8 .

The center of the back cover 2 is provided with a connecting hole 21, which is a through hole, and the connecting shaft 4 is movably inserted in the connecting hole 21, and its diameter is smaller than the connecting hole 21, which is convenient for adjusting the position. The connecting shaft 4 is fixed on the end of the shaft core 1 by screws. The connecting shaft 4 is provided with a shaft shoulder 42 and a fixing groove 41 , the bearing 5 is installed on the connecting shaft 4 , the jumper 6 is installed in the fixing groove 41 , and the inner ring of the bearing 5 is located between the shoulder 42 and the jumper 6 . The bearing 5 and the jumper 6 realize the positioning of the bearing 5 .

The force applying ring 3 is fixed on the end of the back cover 2 by screws, and the outer ring of the bearing 5 is inserted in the force applying ring 3 . Three adjustment holes 31 are arranged in a circular array on the force applying ring 3 , and the adjustment holes 31 are threaded holes and are arranged opposite to the outer ring of the bearing 5 . The adjustment screw 7 is installed in the adjustment hole 31, the steel ball 8 is located between the outer ring and the adjustment screw 7, the adjustment screw 7 is a set screw with a flat end, and the steel ball 8, the adjustment screw 7 and the adjustment hole 31 correspond one by one. Set screws are small in size. The steel ball 8 can compress the outer ring of the bearing 5, and the steel ball 8 can prevent the end of the adjusting screw 7 from rotating on the outer ring of the bearing 5, thereby ensuring the accuracy of adjustment and avoiding excessive adjustment to jam the bearing 5. The steel ball 8 indirectly presses the bearing 5 from the side to eliminate the radial clearance of the main shaft.

The adjusting screws 7 and steel balls 8 arranged in an annular array can conveniently adjust the radial clearance of the main shaft.

Only the connecting shaft 4 and the force applying ring 3 can be processed, and the structure is simple, the cost is low, the adjustment is convenient, and the adjustment accuracy is high.

The technical principles of the present utility model have been described above in conjunction with specific embodiments. These descriptions are only for explaining the principles of the present utility model, and cannot be construed as limiting the protection scope of the present utility model in any way. Based on the explanations here, those skilled in the art can think of other specific implementations of the utility model without creative work, and these modes will all fall within the protection scope of the claims of the utility model.

Claims (4)

1. The utility model provides a grinding machine main shaft high accuracy support, includes back lid (2), its characterized in that still includes:

the connecting shaft (4) is movably inserted into the connecting hole (21) of the rear cover (2) and is connected with the shaft core (1);

the inner ring of the bearing (5) is arranged on the connecting shaft (4);

the clamp spring (6) is fixed on the connecting shaft (4) and is positioned on one side of the bearing (5);

the force applying ring (3) is fixed on the rear cover (2) and connected with the outer ring of the bearing (5), a plurality of adjusting holes (31) are formed in the force applying ring (3), and the adjusting holes (31) are arranged opposite to the outer ring of the bearing (5); and

and the adjusting screws (7) are installed on the adjusting holes (31), correspond to the adjusting holes (31) one by one and are used for compressing outer rings of the bearings (5).

2. A grinder spindle high accuracy mount as claimed in claim 1, further comprising: and the steel ball (8) is positioned between the outer ring of the bearing (5) and the adjusting screw (7).

3. A high-precision support for a grinding machine spindle as claimed in claim 1, characterized in that said adjustment holes (31) are not less than three and are arranged in an annular array.

4. A grinder spindle high accuracy mount as claimed in any one of claims 1 to 3 wherein the adjustment screw (7) is a flat set screw.

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