CN217966537U

CN217966537U - High-precision support for grinding machine spindle

Info

Publication number: CN217966537U
Application number: CN202222015466.1U
Authority: CN
Inventors: 杨锦; 张玉雯
Original assignee: Wuxi Sunshine Precision Machinery Co ltd
Current assignee: Wuxi Sunshine Precision Machinery Co ltd
Priority date: 2022-08-01
Filing date: 2022-08-01
Publication date: 2022-12-06
Anticipated expiration: 2032-08-01

Abstract

The utility model relates to a grinding machine, especially a grinding machine main shaft high accuracy support, including the back lid, still include: the connecting shaft is movably inserted into the connecting hole of the rear cover and is connected with the shaft core; the inner ring of the bearing is arranged on the connecting shaft; the clamp spring is fixed on the connecting shaft and is positioned on one side of the bearing; the force application ring is fixed on the rear cover and is connected with the outer ring of the bearing, a plurality of adjusting holes are formed in the force application ring, and the adjusting holes are arranged opposite to the outer ring of the bearing; and the adjusting screw is arranged on the adjusting hole and used for pressing the outer ring of the bearing. The support eliminates the radial clearance of the main shaft from the side surface by adding the force applying ring, the connecting rod and the set screw under the condition of not changing the main part of the original main shaft, and ensures the rotation precision of the main shaft, thereby improving the machining precision of the main shaft of the grinding machine support, and having fewer modified parts, more standard parts, simple structure and low cost.

Description

High-precision support for grinding machine spindle

Technical Field

The utility model relates to a grinding machine, especially a grinding machine main shaft high accuracy support.

Background

With the improvement of the processing level and the improvement of processing equipment, the P4 grade precision of the bearing industry is a common requirement. The key point for ensuring the precision of the inner ring channel and the outer ring channel of the bearing is P4-level precision. The inner and outer ring channels of the bearing are generally required to be within 0.005mm of roundness, within 0.05mm of roughness and within 0.003mm of profile tolerance. The spindle of the grinding machine support supports the workpiece to rotate, and the workpiece is guaranteed to be machined in place. The precision of the main shaft of the bracket is high, and the precision of the bearing is high. The high rotation precision of the main shaft of the bracket is ensured, and the problem which is always solved by the industry is solved. The conventional method is to change a cylindrical roller bearing, but the processing is troublesome, the cost is improved more, and the effect is not ideal. Or the fit clearance of the rear end bearing is reduced, so that the main shaft generates heat seriously and is locked and stalled.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problem, the utility model provides a radial play of main shaft is eliminated to the edgewise, guarantees a grinding machine main shaft high accuracy support of the rotary precision of main shaft, and concrete technical scheme is:

the utility model provides a grinding machine main shaft high accuracy support, includes the back lid, still includes: the connecting shaft is movably inserted into the connecting hole of the rear cover and is connected with the shaft core; the inner ring of the bearing is arranged on the connecting shaft; the clamp spring is fixed on the connecting shaft and is positioned on one side of the bearing; the force applying ring is fixed on the rear cover and is connected with the outer ring of the bearing, a plurality of adjusting holes are formed in the force applying ring, and the adjusting holes are arranged opposite to the outer ring of the bearing; and the adjusting screws are arranged on the adjusting holes, correspond to the adjusting holes one to one and are used for compressing the outer ring of the bearing.

Preferably, the method further comprises the following steps: and the steel ball is positioned between the outer ring of the bearing and the adjusting screw.

Preferably, the number of the adjusting holes is not less than three, and the adjusting holes are arranged in an annular array.

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

Compared with the prior art the utility model discloses following beneficial effect has:

the utility model provides a pair of grinding machine main shaft high accuracy support is under the condition that does not change former main shaft essential element, through increasing the radial play that the main shaft was eliminated to the application of force ring, extension rod and holding screw edgewise, guarantees the rotational accuracy of main shaft to improve grinding machine support main shaft machining precision, it is few, the standard component is many to reform transform the part, simple structure, with low costs.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

The present invention will now be further described with reference to the accompanying drawings.

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

The center of the rear cover 2 is provided with a connecting hole 21, the connecting hole 21 is a through hole, the connecting shaft 4 is movably inserted into the connecting hole 21, and the diameter of the connecting shaft is smaller than that of the connecting hole 21, so that the position is convenient to adjust. The connecting shaft 4 is fixed to 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 arranged on the connecting shaft 4, the clamp spring 6 is arranged in the fixing groove 41, and the inner ring of the bearing 5 is positioned between the shaft shoulder 42 and the clamp spring 6. The bearing 5 and the clamp spring 6 realize the positioning of the bearing 5.

The force application ring 3 is fixed at the end of the rear cover 2 by a screw, and the outer ring of the bearing 5 is inserted inside the force application ring 3. The annular array on the application ring 3 is provided with three adjusting holes 31, and the adjusting holes 31 are threaded holes and are arranged opposite to the outer ring of the bearing 5. Adjusting screw 7 is installed in adjusting hole 31, and steel ball 8 is located between outer lane and adjusting screw 7, and adjusting screw 7 is flat end holding screw, and steel ball 8, adjusting screw 7 and adjusting hole 31 correspond one-to-one. The set screw is small in size. The steel ball 8 can compress tightly the outer lane of bearing 5, and the steel ball 8 can avoid adjusting screw 7's tip to rotate on the outer lane of bearing 5 to guarantee the precision of adjusting, avoid adjusting excessive card dead bearing 5. The steel ball 8 indirectly presses the bearing 5 from the side surface, and the radial play of the main shaft is eliminated.

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

Only the connecting shaft 4 and the force application ring 3 are processed, so that the structure is simple, the cost is low, the adjustment is convenient, and the adjustment precision is high.

The technical principle of the present invention has been described above with reference to specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without any inventive effort, which would fall within the scope of the claims of the present invention.

Claims

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.