CN201535670U

CN201535670U - Novel bearing axial clearance measuring apparatus

Info

Publication number: CN201535670U
Application number: CN2009201237292U
Authority: CN
Inventors: 李影
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-07-06
Filing date: 2009-07-06
Publication date: 2010-07-28
Anticipated expiration: 2019-07-06

Abstract

The utility model relates to a novel bearing axial clearance measuring apparatus, which is mainly characterized in that the measuring apparatus is provided with a setting spindle capable of driving a bearing inner ring to sway so as to solve the center drop problem of a bearing. The output pressure of an air cylinder is adopted to fix the bearing inner ring, and the air cylinder or the combined structure of the air cylinder and a spring is adopted to apply a bidirectional axial pressure to a bearing outer ring so as to improve and stabilize the precision of bearing clearance measurement, improve production efficiency and reduce the labor strength of operators, and the center drop problem of the bearing including special bearings, such as double-row tapered roller bearings and the like, can be solved.

Description

Novel bearing end-play surveying instrument

Technical field

The utility model relates to a kind of bearing measuring instrument, specifically is exactly a kind of have high-level efficiency, high precision, especially can solve the fall bearing end-play surveying instrument of heart problem of specific bearings such as double-row conical bearing.

Background technology

End-play between bearing enclose and the rolling body between the two is the key factor that bearing influences performance and life-span.Problems such as traditional bearing clearance surveying instrument (as the bearing clearance measuring instrument of patent 94226448.7 announcements) has complex operation, and efficiency of measurement is low.

Though and the bearing end-play measuring instrument that patent 01205452.6 discloses can be measured bearing clearance, can't solve the heart problem that falls of double-row conical bearing.Another patent 98107125.2 discloses double-row conical bearings and eliminates play by the way that allows bearing inner race rotate mutually, compares with the vibration of the external maturation heart method that falls, and the problem of reliability and precision aspect is also arranged.

Therefore in actual production, bearing producer often has to adopt the hand-turning bearing enclose, and the way of pushing and lift bearing outer ring is by hand measured the end-play of specific bearings such as double-row angular contact bal bearing and double-row conical bearing.The serious accuracy that reduces production efficiency and measurement.

Summary of the invention

In order to overcome the deficiencies in the prior art, the utility model provides a kind of high-level efficiency, high precision, especially can solve the fall bearing end-play surveying instrument of heart problem of double-row conical bearing.

Solution of the present utility model is that the ventilation cylinder is crossed in the vertical direction and pressed solidly bearing inner race, and makes the method for the mutual oscillating motion of bearing enclose solve the heart problem that falls of bearing roller and retainer; By upper cylinder bearing outer ring is applied straight down pressure, lower cylinder or lower springs apply straight up pressure to bearing outer ring, and the measurement axis bearing outer-ring promptly is the end-play numerical value of bearing in the displacement that axially produces.

Good effect of the present utility model is:

Press solidly bearing inner race by cylinder, substituted and used the fixedly way of inner ring of nut and pressing plate in the general instrument, greatly improved instrumentation personnel's work efficiency, obviously alleviate its labour intensity.In addition, when bearing inner race is separate when inner ring is put together up and down (as double-row conical bearing etc.) by two, when inner ring is done relative swing outside bearing, press solidly inner ring by cylinder and can regulate the bearing inner race position, eliminate the unnecessary gap between the inner ring up and down with the bearing inner race heart process that falls.This adopts nut and pressing plate solid bearing inner ring to accomplish.In addition, by cylinder or spring bearing outer ring is applied axle pressure, avoided the traditional measurement instrument to adopt the weight arm system when the outer ring applies axle pressure, its axle pressure is difficult to guarantee the problem coaxial with BEARING SHAFT, can increase substantially the accuracy of measurement, and obviously improved efficiency of measurement, significantly reduced labor intensity of operating personnel.

Description of drawings

Fig. 1 adopts among the embodiment of common double active cylinder the principle sketch of surveying instrument.

Among Fig. 1,1 upper cylinder, outer ring pressing mold on 2,3 springs, inner ring pressing mold on 4,5 pedestals, 6 driving belts, 7 axles, 8 bearings to be measured, 9 spindle bearings, 10 dip molds, 11 lower cylinder the axis of the pistons.

In Fig. 1, the shape of each parts, quantity and particular location are not the necessary technology condition for illustrative purposes only.

Embodiment

Come to be described further below in conjunction with accompanying drawing and embodiment to this use is novel:

In Fig. 1, bearing 8 to be measured is fixed on the surveying instrument by axle 7 and last inner ring pressing mold 4.This moment, the vertical pressure of upper cylinder 1 piston rod was to be delivered to inner ring pressing mold 4 by spring 3.When last inner ring pressing mold 4 compressed inner ring, last outer ring pressing mold 2 also descended with piston rod, pushed down the outer ring of bearing 8 to be measured.

After the inner ring of bearing 8 to be measured fixedly finished, driving belt 6 drove axle 7, and the inner ring that drives bearing 8 to be measured by axle 7 is done the swing of relative outer ring again, to realize the heart that falls of bearing 8 rollers to be measured and retainer.

When bearing 8 to be measured falls after the heart finishes, because the outer ring of bearing 8 to be measured also has been subjected to the pressure effect of last outer ring pressing mold 2 at this moment, so the outer ring of bearing 8 to be measured will be in the minimum point of vertical direction at this moment, can note the height number of outer ring this moment by measurement instrument.

After the minimum point height value of record outer ring, (always be in compressive state owing to spring 3 this moment to the piston rod of lifting slightly (as long as height of lifting hundreds of or tens microns) upper cylinder 1, though piston rod is lifting to some extent, but spring still can output pressure, make inner ring pressing mold 4 continue to compress the inner ring of bearing 8 to be measured), make lower cylinder piston rod 11 upwards export certain pressure simultaneously (if replace lower cylinder 11 with spring 11, after then the piston rod of upper cylinder 1 rises, spring 11 can rise on the outer ring of automatic promotion rising bearing 8 to be measured), then survey the outer ring of bearing 8 and will under the effect of dip mold, move straight up.When the outer ring moves to peak, can note the height number of outer ring this moment by measurement instrument.

The maximal value of outer ring height number is deducted minimum value, and its difference promptly is the end-play numerical value of bearing.

If when adopting telescopic cylinder to replace the common double active cylinder as upper cylinder 1, to go up inner ring pressing mold 4 and be fixed on cylinder piston rod, last outer ring pressing mold 2 is fixed on the central housing of telescopic cylinder, and then the position of inner ring pressing mold 4 and last outer ring pressing mold 2 can separately be regulated.Can omit spring 3 this moment, and concrete operation method and measuring principle are with the scheme that adopts the common double active cylinder.

Claims

1. instrument of measuring the bearing end-play, it is characterized in that using the last inner ring pressing mold (4) that links to each other by piston rod with upper cylinder (1), with a level and the vertical direction position that can swing common solid bearing (8) inner ring of locator mandrel (7) of rotation, and by outer ring pressing mold (2) in upper cylinder (1) driving, and the output pressure effect of lower cylinder (11) or lower springs axle axially moves the outer ring of bearing; Measure the outer ring of bearing (8) at this moment with surveying instrument, perhaps the vertical direction of dip mold (10) moves numerical value, is the end-play value of bearing.

2. the instrument of measurement bearing end-play according to claim 1 is characterized in that axle (7) by bearing (9), is installed in the pedestal (5), can rotate along the axle center, links to each other with prime mover by belt (6); Axle can be done swing rotation repeatedly under prime mover drags, make inner ring, roller and the retainer of bearing (8) realize the heart.

3. the instrument of measurement bearing end-play according to claim 1 is characterized in that cylinder (1) can be common double active cylinder or telescopic cylinder, and its piston rod is coaxial with locator mandrel (7); When adopting the common double active cylinder, last outer ring pressing mold (2) is fixed on the piston rod of cylinder (1), and goes up inner ring pressing mold (4) transmits cylinder (1) by spring (3) piston rod pressure; When adopting telescopic cylinder, last outer ring pressing mold (2) is connected with the middle cylinders cylinder body, and last inner ring pressing mold (4) is connected with piston rod.