CN204397611U - Be configured to the processing aid of the separation pad of diagonal angle contact ball bearing face-to-face - Google Patents

Abstract

The utility model provides a kind of processing aid being configured to the separation pad of diagonal angle contact ball bearing face-to-face, comprise bearing block, axle and bearing gland, bearing block has bearing saddle bore, bearing saddle bore one end has the shoulder of spring bearing cycle surface, bearing gland is installed on the bearing saddle bore other end, bearing gland has the operate portions contacted with another bearing outer ring, axle comprises the thread segment axially arranged in turn, for the shaft shoulder of the axle journal and spring bearing inner ring of installing bearing, thread segment is installed the locking nut for compressing another bearing inner race, bearing block wall has as diagonal angle contact ball bearing, put in for clearance gauge with the through hole of multimetering outer gap width between dottle pin and bearing outer ring when interior dottle pin and outer dottle pin are all installed on bearing block and axle.

Description

Machining aids for face-to-face configurations as spacers between angular contact ball bearings

technical field

The utility model relates to a processing auxiliary tool which is arranged face to face as a spacer between diagonal contact ball bearings.

Background technique

Due to the characteristics of high speed, high rigidity and high precision, the high-speed machine tool spindle has strict requirements on the precision and rigidity of the support. Usually, two or more sets of angular contact ball bearings are combined in series as the support of the main shaft. In the same set of angular contact ball bearings, each set of bearings should be required to bear the same load. Due to the improper adjustment of the height of the spacer between the bearings, the actual loads on the bearings are not equal, and it is easy to cause premature damage to one set of bearings and stop working, thus causing the entire set of bearings to be scrapped. In order to prevent this from happening, universal matching bearings are often used. The manufacturer adjusts the protruding amount of the assembled bearing to zero before leaving the factory. The bearing user only needs to process the thickness of the inner and outer spacers to be consistent. However, the universal matching bearing (such as: FAG, NSK) is mainly imported. Lord, it is difficult to manufacture and the price is high. Non-universal matching bearings are cheap, but the bearing protrusion is usually not zero, and the height difference between the inner and outer spacers between the bearings is not easy to determine. Workers assemble and grind spacers based on personal experience, which cannot be quantified, and the operating life of the bearings cannot be guaranteed.

Invention content

The technical problem to be solved by the utility model is to provide a processing auxiliary tool which is arranged face to face as a spacer between diagonal contact ball bearings.

In order to solve the problems of the technologies described above, the technical solution of the utility model is:

A processing aid configured face-to-face as a spacer between angular contact ball bearings, comprising a housing, a shaft and a bearing gland,

The bearing seat has a bearing seat hole, one end of the bearing seat hole has a shoulder supporting the end face of the bearing outer ring, the bearing gland is installed at the other end of the bearing seat hole, and the bearing gland has a working part in contact with another bearing outer ring,

The shaft includes a threaded section arranged in sequence in the axial direction, a journal for installing the bearing and a shoulder for supporting the inner ring of the bearing. A lock nut for pressing the inner ring of another bearing is installed on the threaded section.

When the diagonal contact ball bearing, the inner spacer and the outer spacer are installed on the bearing seat and the shaft, there is a channel on the wall of the bearing seat for the feeler gauge to penetrate to measure the gap value between the outer spacer and the outer ring of the bearing at multiple points. hole.

The inner spacer and outer spacer and the paired angular contact ball bearings in the process of processing the inner spacer and outer spacer processed by the auxiliary tool of spacer can be installed and used in a complete set, and its operating life has been improved. It can replace the universal Paired bearings greatly reduce the purchase cost of bearings.

Description of drawings

Below in conjunction with accompanying drawing, the embodiment of the present utility model is described in detail:,

FIG. 1 is a schematic structural view of a processing aid for a spacer.

In the figure: 1 bearing housing, 2 shafts, 3 outer spacer, 4 inner spacer, 5 bearing gland, 6 lock nut.

Detailed ways

As shown in FIG. 1 , a processing auxiliary tool configured face-to-face as a spacer between angular contact ball bearings includes a bearing seat 1 , a shaft 2 and a bearing gland 5 .

The bearing seat has a bearing seat hole, one end of the bearing seat hole has a shoulder supporting the end face of the bearing outer ring, the bearing gland is installed on the other end of the bearing seat hole, and the bearing gland has a working part in contact with another bearing outer ring.

The shaft includes a threaded section arranged in sequence in the axial direction, a journal for installing the bearing and a shoulder for supporting the inner ring of the bearing, and a lock nut 6 for pressing the inner ring of another bearing is installed on the threaded section.

When the diagonal contact ball bearing, the inner spacer 4 and the outer spacer 3 are installed on the bearing seat and the shaft, there is a feeler gauge on the wall of the bearing seat for multi-point measurement of the gap between the outer spacer and the outer ring of the bearing. through holes.

The following is an introduction to the processing method of the septum using the above-mentioned processing auxiliary tools. The steps are as follows:

1) Grind the end faces of the inner septum and the outer septum to make them flat, and the axial height of the inner septum - the axial height of the outer septum = 0.2 ~ 0.4mm;

2) Install the diagonal contact ball bearings on the bearing seat and shaft with the inner spacer and outer spacer in the face-to-face direction, install the bearing gland, and apply the specified preload with a force measuring wrench according to the use requirements of the bearing;

3) Use a feeler gauge to measure the gap between the outer spacer and the bearing outer ring. If there is no gap, continue to grind the outer spacer with a grinding amount of 0.005-0.02mm each time until there is a gap between the outer spacer and the bearing outer ring , measure the value of the gap at multiple points, and calculate the average gap value; if there is a gap between the outer spacer and the bearing outer ring, measure the value of the gap at multiple points, and calculate the average gap value;

4) Grind the inner spacer according to the average clearance value, and the grinding amount is 0.005-0.02mm each time. After each grinding, reinstall the diagonal contact ball bearing, the inner spacer and the outer spacer in the processing auxiliary tool. And re-measure the gap between the outer spacer and the outer ring of the bearing. In order to improve the parallelism of the two planes of the spacer, the end face of the inner spacer and the end face of the outer spacer should be precisely ground before the last measurement and grinding.

Specifically, in step 1), the axial height of the inner septum−the axial height of the outer septum=0.3mm.

Specifically, in step 3), the grinding amount is 0.01mm each time.

Specifically, in step 4), the grinding amount is 0.01mm each time.

The spacers between the diagonal contact ball bearings arranged face to face are processed by the above-mentioned spacer processing method.

A set of diagonal contact ball bearings arranged face to face, including the above-mentioned processed inner spacer and outer spacer and paired angular contact ball bearings during the processing of the inner spacer and outer spacer.

In a group of face-to-face arranged diagonal contact ball bearings, through the above-mentioned processing aids and processing methods, adjust the height of the inner spacer and outer spacer, so that each set of bearings should bear the same load, improve the operating life, and can replace Universal paired bearings greatly reduce the purchase cost of bearings.

Claims (1)

1. be configured to a processing aid for the separation pad of diagonal angle contact ball bearing face-to-face, it is characterized in that: comprise bearing block, axle and bearing gland,

Bearing block has bearing saddle bore, and bearing saddle bore one end has the shoulder of spring bearing cycle surface, and bearing gland is installed on the bearing saddle bore other end, and bearing gland has the operate portions contacted with another bearing outer ring,

Axle comprises the thread segment, the shaft shoulder for the axle journal and spring bearing inner ring of installing bearing that axially arrange in turn, thread segment is installed the locking nut for compressing another bearing inner race,

Bearing block wall has when being all installed on bearing block and axle as diagonal angle contact ball bearing, interior dottle pin and outer dottle pin and put in the through hole of the outer gap width between dottle pin and bearing outer ring of multimetering for clearance gauge.