CN203343975U

CN203343975U - Bearing axial constant force and necking fixing tool

Info

Publication number: CN203343975U
Application number: CN 201320285399
Authority: CN
Inventors: 胡忠会; 刘国光; 李正晖; 刘小明
Original assignee: Xian Aircraft Design and Research Institute of AVIC
Current assignee: Xian Aircraft Design and Research Institute of AVIC
Priority date: 2013-01-05
Filing date: 2013-05-23
Publication date: 2013-12-18
Anticipated expiration: 2023-05-23

Abstract

The utility model belongs to the field of machine design, and particularly relates to a bearing axial constant force and necking fixing tool. The bearing axial constant force and necking fixing tool is used for taking the place of a traditional rolling wheel necking and pressing mode, and is a necking and pressing tool capable of being controlled in a quantified mode. The bearing axial constant force and necking fixing tool is of the structure of a solid of revolution; a positioning hole is formed in the middle of the bearing axial constant force and necking fixing tool; sharp necking and pressing corners are arranged at the bottom of the bearing axial constant force and necking fixing tool. Through necking and pressing force control and necking and pressing time length control, the bearing axial constant force and necking fixing tool ensures that bearings bear enough axial outward-pushing force after being converged and pressed, axial clearance or starting force moment does not change obviously, certain rotation flexibility of the bearings is kept, the bearings are quickly fixed, and 100% qualification rate of the bearings is achieved.

Description

A kind of bearing shaft is to determining power closing in setting tool

Technical field

The utility model belongs to mechanical design field, particularly relates to a kind of bearing shaft to determining power closing in setting tool, for substituting traditional roller, receives the pressure mode, is a kind of receipts press tool that can quantize control.

Background technology

Airplane parts is when installing bearing, traditional roller is received impacts such as pressing the size of can not quantified controlling receiving pressure and rotating speed and is received the factor of pressing effect, rely on operator's working experience fully, what the bearing after installation can not guarantee axially to release power, end-play or staring torque etc. simultaneously all meets designing requirement, causes scrapping of part and bearing.

Summary of the invention

The purpose of this utility model is: a kind of setting tool of bearing is provided, and after guaranteeing that the bearing receipts have been pressed, when bearing enough axial release power, the end-play of bearing or staring torque significantly do not change, and keep certain rotation flexibility.

The technical solution of the utility model is: a kind of bearing shaft is to determining power closing in setting tool, for rotary structure, centre is provided with locating hole 1, near the plane of locating hole 1, avoid bearing inner race end face and bearing shaft to interfere to determining power closing in setting tool, bottom arranges receives pointing angle 2, receive 2 positions, pointing angle consistent with bearing mounting groove 3 or the bearing block counter boring 4 of bearing outer ring, receipts pointing angle 2 is mainly used in the receipts pressure limit of bearing outer ring mounting groove 3 or bearing block counter boring 4, and the internal diameter of locating hole 1 is consistent with bearing bore diameter.

When the receipts last item holds mounting groove 3, the inner face angle β that receives pointing angle 2 is less than 30 ° of bearing outer ring mounting groove 3 inner face angles, and bearing outside angle α is greater than 30 ° of bearing outer ring mounting groove 3 outside angles.

When receiving last item bearing counter boring 4, the inner face angle β that receives pointing angle 2 is greater than 30 ° of bearing block counter boring 4 inner face angles, and the outside angle α that receives pointing angle 2 is less than 30 ° of bearing block counter boring 4 outside angles.

Advantage of the present utility model: the utility model bearing shaft is controlled the size of receiving pressure and the length of receiving the pressure time to determining power closing in setting tool by control, after guaranteeing that the bearing receipts have been pressed, when bearing enough axial release power, the end-play of bearing or staring torque significantly do not change, keep certain rotation flexibility, realize the qualification rate of the quick fixing of bearing and 100%.

The accompanying drawing explanation

Fig. 1 is that traditional roller is received the structural representation of pressing;

Fig. 2 is structural representation of the present utility model (receives last item and hold the mounting groove situation);

Fig. 3 is the utility model partial enlarged drawing (receives last item and hold the mounting groove situation);

Fig. 4 is enforcement schematic diagram of the present utility model (receiving last item bearing counter boring situation);

Fig. 5 is the utility model partial enlarged drawing (receiving last item bearing counter boring situation).

Wherein, the 1-locating hole, 2-receives pointing angle, 3-bearing mounting groove, 4-bearing block counter boring, 5-bearing, 6-locating shaft.

The specific embodiment

Below the utility model is described in further details, refers to Fig. 1 to Fig. 5.

As shown in Figure 1, receive the structural representation of pressing for traditional roller.Before receiving pressure processing, roller is received to press tool to be arranged on drilling machine, bearing is installed in bearing block, utilize bearing that bearing and bearing block support are placed on the drilling machine stand, receive the locating shaft on press tool by roller, regulate bearing and bearing block and roller and receive press tool centering, then, regulate roller by the rocking arm of drilling machine and receive press tool and bearing and the bearing block distance in the drill press spindle direction.Adjust suitable after, start drilling machine, apply receipts pressure by rocking arm, realize the flange of bearing outer ring mounting groove or bearing block counter boring by the rotation of drill press spindle, realize that bearing closes up fixing.The rotary speed of receiving the size of pressure and drill press spindle is to affect the bearing fixing key that closes up, and human factor is more, is unfavorable for quantified controlling.

As shown in Figures 2 and 4, bearing shaft is rotary structure to determining power closing in setting tool, centre is provided with locating hole 1, near the plane of locating hole 1, avoid bearing inner race end face and bearing shaft to interfere to determining power closing in setting tool, bottom arranges receives pointing angle 2, receive 2 positions, pointing angle consistent with bearing mounting groove 3 or the bearing block counter boring 4 of bearing outer ring, receive the receipts pressure limit that pointing angle 2 is mainly used in bearing outer ring mounting groove 3 or bearing block counter boring 4, the internal diameter of locating hole 1 is consistent with bearing bore diameter.

As shown in Figures 2 and 3, when the receipts last item holds mounting groove 3, the inner face angle β that receives pointing angle 2 is less than 30 ° of bearing outer ring mounting groove 3 inner face angles, and bearing outside angle α is greater than 30 ° of bearing outer ring mounting groove 3 outside angles.

As shown in Figures 4 and 5, when receiving last item bearing counter boring 4, the inner face angle β that receives pointing angle 2 is greater than 30 ° of bearing block counter boring 4 inner face angles, and the outside angle α that receives pointing angle 2 is less than 30 ° of bearing block counter boring 4 outside angles.

Before receiving pressure processing, bearing is installed in bearing block, utilize bearing 5 that bearing and bearing block support are placed on the press device stand, by bearing shaft to the locating shaft of determining power closing in setting tool, bearing and bearing block and bearing shaft are assembled to determining power closing in setting tool, then, by press device, with certain loading speed, slowly apply uniformly receipts pressure, when receipts pressure reaches the regulation requirement, keep the regular hour to get final product.

Claims

1. a bearing shaft is to determining power closing in setting tool, for rotary structure, it is characterized in that, centre is provided with locating hole [1, near the plane of locating hole [1], avoid bearing inner race end face and bearing shaft to interfere to determining power closing in setting tool, bottom arranges receives pointing angle [2], receive position, pointing angle [2] consistent with bearing mounting groove [3] or the bearing block counter boring [4] of bearing outer ring, receipts pointing angles [2] are mainly used in the receipts pressure limit of bearing outer ring mounting groove [3] or bearing block counter boring [4], and the internal diameter of locating hole [1] is consistent with bearing bore diameter.

2. a kind of bearing shaft according to claim 1 is to determining power closing in setting tool, it is characterized in that, when the receipts last item holds mounting groove [3], the inner face angle β that receives pointing angle [2] is less than 30 ° of bearing outer ring mounting groove [3] inner face angles, and bearing outside angle α is greater than 30 ° of bearing outer ring mounting groove [3] outside angles.

3. a kind of bearing shaft according to claim 1 is to determining power closing in setting tool, it is characterized in that, when receiving last item bearing counter boring [4], the inner face angle β that receives pointing angle [2] is greater than 30 ° of bearing block counter boring [4] inner face angles, and the outside angle α that receives pointing angle [2] is less than 30 ° of bearing block counter boring [4] outside angles.