CN207728743U - Milling equipment bearing mounting structure - Google Patents

Abstract

Milling equipment bearing mounting structure, bearing are installed on roll mandrel, and bearing side is located on roll mandrel and installs positioning sleeve, is located at positioning sleeve rear end installation locking ring on roll mandrel；On positioning sleeve at least one key is evenly equipped on the end face of bearing side, uniformly distributed on the end face of positioning sleeve side and key matches at least one groove of installation on bearing inner race, key is round key, square button, trapezoidal key or oval key, and the groove is circular trough, square groove, dovetail groove or the elliptical slot to match with key.Positioning sleeve is increased guide key and the groove of bearing inner race end face is connected by the milling equipment bearing mounting structure of the utility model, and inner ring and the axis and positioning sleeve of bearing rotate synchronously, and avoid bearing inner race grinding cracks.

Description

Milling equipment bearing mounting structure

Technical field

The utility model is related to milling equipment fields.

Background technology

When milling equipment is installed, bearing inner race and roll mandrel ensure the inner ring of bearing and roll generally using being interference fitted Roll shaft rotate synchronously, if to particular/special requirement or to large size bearing cannot use be interference fitted with axis when, compressed by positioning sleeve, Ensure that positioning sleeve, milling train axis and bearing operate synchronously, as shown in Figure 1.

There are gap, positioning sleeve and bearing face have a gap for the cooperation of bearing bore diameter and axis, roll at work, by rolling The frictional force that the friction on power and inner peripheral surface processed and axis surface generates drives bearing inner race rotation.And positioning sleeve internal diameter is also with axis Clearance fit, including axial end face have gap, cause axis in rotation, positioning sleeve does not turn so that it bearing and retaining ring it Between have axial float.Friction is generated when being contacted with bearing inner race, there is grinding cracks phenomenon in inner ring end face.

Utility model content

In order to solve the above problem existing for the existing machine equipment bearing mounting structure rolled using positioning sleeve, the utility model Provide a kind of milling equipment bearing mounting structure.

The utility model technical solution used for the above purpose is：Milling equipment bearing mounting structure, bearing 3 It is installed on roll mandrel 5,3 side of bearing is located on roll mandrel 5, positioning sleeve 2 is installed, being located at 2 rear end of positioning sleeve on roll mandrel 5 pacifies Fill retaining ring 1；At least one key is evenly equipped on positioning sleeve 2 on the end face of 3 side of bearing, is located at positioning on bearing inner race 4 Uniformly distributed and key is covered on the end face of 2 sides to match at least one groove of installation.

The key is that round key 10, square button 11, trapezoidal key 12 or oval key 13, the groove match with key Circular trough 6, square groove 7, dovetail groove 8 or elliptical slot 9.

Positioning sleeve is increased the recessed of guide key and bearing inner race end face by the milling equipment bearing mounting structure of the utility model Slot is connected, and is connected between bearing bore diameter and axis, between positioning sleeve and bearing face for groove, ensures that the two is synchronous Operation, avoids bearing inner race grinding cracks.

Description of the drawings

Fig. 1 is bearing and roll mandrel installation diagram.

Fig. 2 is the utility model bearing inner race main view sectional structure chart.

Fig. 3 is the utility model bearing inner race circular trough structure chart figure.

Fig. 4 is the utility model bearing inner race square groove structure chart.

Fig. 5 is the utility model bearing inner race trapezoid groove structure figure.

Fig. 6 is the utility model bearing inner race elliptical slot structure chart.

Fig. 7 is the utility model locating sleeve structure figure.

Fig. 8 is the A-A sectional structure charts of Fig. 7.

Fig. 9 is the utility model positioning sleeve round key B to structure chart.

Figure 10 is the utility model positioning sleeve square button B to structure chart.

Figure 11 is the trapezoidal key B of the utility model positioning sleeve to structure chart.

Figure 12 is the utility model positioning sleeve ellipse key B to structure chart.

In figure：1, retaining ring, 2, positioning sleeve, 3, bearing, 4, bearing inner race, 5, roll mandrel, 6, circular trough, 7, square groove, 8, dovetail groove, 9, elliptical slot, 10, round key, 11, square button, 12, trapezoidal key, 13, oval key.

Specific implementation mode

The milling equipment bearing mounting structure of the utility model is as shown in Figure 1, bearing 3 is installed on roll mandrel 5, roll mandrel It is located at 3 side of bearing on 5 and positioning sleeve 2 is installed, is located at 2 rear end installation locking ring 1 of positioning sleeve on roll mandrel 5；It is located on positioning sleeve 2 It is evenly equipped at least one key on the end face of 3 side of bearing, uniformly distributed and key on the end face of 2 side of positioning sleeve is located on bearing inner race 4 Match at least one groove of installation.

For the structure of the key of positioning sleeve end face as shown in Fig. 7-Figure 12, key is round key 10, square button 11, trapezoidal key 12 or ellipse Round key 13, for the groove structure of inner ring end face as shown in Fig. 2-Fig. 6, groove is the circular trough 6 to match with key, rectangular in bearing Slot 7, dovetail groove 8 or elliptical slot 9.The guide key of positioning sleeve and the quantity of interior ring recess are unlimited, but the quantity of slot is greater than or waits In the quantity of key.

At work, the frictional force generated by the friction on roll-force and inside diameter surface and axis surface is in dynamic bearing for roll Circle rotation.Positioning sleeve is increased into guide key and the groove of bearing inner race end face is connected, ensures the two synchronous operation.

The utility model is described by embodiment, and those skilled in the art know, new not departing from this practicality In the case of the spirit and scope of type, various changes or equivalence replacement can be carried out to these features and embodiment.In addition, at this Under the introduction of utility model, it can modify to these features and embodiment to adapt to particular situation and material without taking off Spirit and scope from the utility model.Therefore, the utility model is not limited to the particular embodiment disclosed, and is owned The embodiment fallen within the scope of claims hereof belongs to the scope of protection of the utility model.

Claims (2)

1. milling equipment bearing mounting structure, it is characterised in that：Bearing（3）It is installed on roll mandrel（5）On, roll mandrel（5）It is upper In bearing（3）Side is installed by positioning sleeve（2）, roll mandrel（5）It is upper to be located at positioning sleeve（2）Rear end installation locking ring（1）；Positioning sleeve （2）It is upper to be located at bearing（3）At least one key, bearing inner race are evenly equipped on the end face of side（4）It is upper to be located at positioning sleeve（2）Side Uniformly distributed and key matches at least one groove of installation on end face.

2. milling equipment bearing mounting structure according to claim 1, it is characterised in that：The key is round key（10）、 Square button（11）, trapezoidal key（12）Or oval key（13）, the groove is the circular trough to match with key（6）, square groove （7）, dovetail groove（8）Or elliptical slot（9）.