CN106624776A - Bi-directional single bearing precise shaft system assembling method - Google Patents

Abstract

The invention provides a bi-directional single bearing precise shaft system assembling method. Precise assembling of the high rotation precision of a shaft system which has a certain span and is supported by the bi-directional single bearing can be achieved. The method comprises the steps that convex value delta 1 and delta 2 of an upper single bearing and a lower single bearing are measured; the distance L1 between the inner rings of the bearings and the distance L2 between outer rings of the bearings are measured; the inner ring adjusting gasket thickness=L1-L1-delta 1-delta 2 is calculated, and inner ring adjusting gaskets are reground in sequence to the required thicknesses; shaft system assembling is completed according to the normal bearing assembling sequence. Accordingly, precise assembling of the high rotation precision of the shaft system which has the certain span and is supported by the bi-directional single bearing can be achieved, and the phenomenon that the shaft system rotation precision is within 10 inches can be achieved by means of the method.

Description

A kind of two-way single-shaft holds precision bearing system assembly method

Technical field

The invention belongs to precision bearing system mounting technology field, and in particular to a kind of two-way single-shaft holds precision bearing system assembling side Method.

Background technology

With the polytechnic continuous development of electro-optical system, high accuracy surely takes aim at technology and high-precision transmission system becomes existing The inexorable trend of stage development, is to ensure that electro-optical system captures exactly, aims at and track target, and the precision of precision bearing system is carried Very high index request is gone out.

The precision of shafting is mainly determined by the precision and assembly precision of bearing itself, for accurate paired pre- mandrel Hold, as long as carrying out suitable pretension during assembling, just can reach higher precision.But, for the two-way list with certain span The shafting of bearings, if assembly method is improper, is extremely difficult to high-precision requirement.

The content of the invention

It is an object of the invention to provide one kind can be realized, the two-way single-shaft with certain span holds the shafting of support The Precise Assembling Method of high rotating accuracy.

The technical scheme is that：

A kind of two-way single-shaft holds precision bearing system assembly method, it is characterised in that：Comprise the following steps：

Step 1：Measurement bearing bulge quantity：Bearing inner race is installed in frock support shaft, by load block outside bearing Circle applies axial force, and by dial gauge bulge quantity δ 1 and δ 2 of the bearing inner race relative to outer ring is measured, and wherein δ 1 is upper bearing (metal) Bulge quantity, δ 2 is lower bearing bulge quantity；

Step 2：The distance between measurement upper bearing (metal) inner ring and lower bearing inner ring L1, outside measurement upper bearing (metal) outer ring and lower bearing The distance between circle L2；

Step 3：Calculate inner ring adjust pad thickness=L2-L1- δ 1- δ 2；

Step 4：Reconditioning inner ring adjust pad is to requiring thickness；

Step 5：Sequence ligand is taken up according to normal axis, shafting assembling is completed.

Beneficial effect

The achievable two-way single-shaft with certain span of the present invention holds the precision assembly of the high rotating accuracy of the shafting of support, Using the inventive method shafting rotating accuracy is capable of achieving 10 " within.

The additional aspect and advantage of the present invention will be set forth in part in the description, and partly will become from the following description Obtain substantially, or recognized by the practice of the present invention.

Description of the drawings

The above-mentioned and/or additional aspect and advantage of the present invention will become from the description with reference to accompanying drawings below to embodiment It is substantially and easy to understand, wherein：

Fig. 1 is the schematic diagram of the inventive method；

Fig. 2 is the front view of an embodiment of the present invention；

Fig. 3 is the sectional view of an embodiment of the present invention；

Fig. 4 is the top view of an embodiment of the present invention；

Fig. 5 is the bearing protrusion measuring schematic diagram front view of the present invention；

Fig. 6 is the bearing protrusion measuring schematic diagram top view of the present invention.

Wherein：1st, inner frame；2nd, upper bearing (metal)；3rd, upper bearing (metal) outer press cover；4th, upper bearing (metal) internal gland；5th, top chock；6th, One pad；7th, step；8th, lower bearing；9th, lower bearing internal gland；10th, lower bearing outer press cover；11st, the second pad；12nd, it is outer Frame；13rd, support shaft；14th, bearing to be measured；15th, the first load block；16th, the second load block；17th, excitation equivalence block；18th, amesdial； 19th, bulge quantity.

Specific embodiment

Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from start to finish Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and be not considered as limiting the invention.

In describing the invention, it is to be understood that term " " center ", " longitudinal direction ", " horizontal ", " length ", " width ", " thickness ", " on ", D score, "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outward ", " up time The orientation or position relationship of the instruction such as pin ", " counterclockwise " is, based on orientation shown in the drawings or position relationship, to be for only for ease of The description present invention and simplified description, rather than indicate or imply that the device or element of indication must have specific orientation, Yi Te Fixed azimuth configuration and operation, therefore be not considered as limiting the invention.

In addition, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying relative importance Or the implicit quantity for indicating indicated technical characteristic.Therefore, define " first ", the feature of " second " can express or Implicitly include one or more this feature.In describing the invention, " multiple " are meant that two or more, Unless otherwise expressly limited specifically.

As shown in Figure 2 to 4, upper bearing (metal) 2 is respectively deep groove ball bearing, model to the structure chart of embodiment with lower bearing 8 6709,6703；Two bearings locating distance is 59.5mm, and the rotating accuracy of matching requirements shafting is not more than 10 ".

Embodiment is assembled in this assembling ＆ adjusting system and accuracy detection step is as follows：

(1) bulge quantity of upper bearing (metal) and lower bearing is measured：As shown in Figure 5；Bearing inner race is installed in frock support shaft, is carried Lotus locating piece is positioned by support shaft, and on imposed load to bearing outer ring, load block 1,2 is 10N, and 20N determines load, excitation equivalence Kuai Cong centers are jagged to four sides, and with amesdial the difference in height of bearing inner race and outer ring, as bearing bulge quantity are measured.Jing is surveyed Amount upper bearing (metal) bulge quantity δ 1=0.08mm, lower bearing bulge quantity δ 2=0.07mm；

(2) the two bearings inner ring mounting surface of inner frame 1 is measured with altitude meter, nominal size is that 57.5 actual measurement size is in figure 57.53mm；Thickness with the second pad of inside micrometer 11 is 1.02mm, then bearing inner race mounting distance L1=57.53+1.02 =58.55mm；

(3) it is 77.95mm with the measured value of size 78 in the altitude meter measurement figure of housing 12；Size 9 in the figure of top chock 5 Measured value is 9.03mm, and the measured value of size 9.5 is 9.45mm in the figure of step 7；Then bearing outer ring mounting distance L2= 77.95-9.03-9.45=59.47mm；

(4) according to above measurement data, dimension chain calculating, upper bearing (metal) 6 thickness of the first pad=L2-L1- δ 1- δ 2= 59.47-58.55-0.08-0.07=0.77mm；

(5) the first pad of reconditioning upper bearing (metal) 1 arrives 0.77mm；

(6) assemble successively according to shafting assemble sequence, inside casing, top chock 5, step 7 are first nested into the peace of housing At dress hole position, then the first pad 6, the second pad 11 are installed successively again, bearing inner race is installed to pad end face, and outer ring is installed to Outer seat end face, installs upper bearing (metal) internal gland 4, upper bearing (metal) outer press cover 3, lower bearing internal gland 9, lower bearing outer press cover 10；Finally go up, Step is fixed on housing.

(7) method for adopting optical self-calibrating detects the rotating accuracy of shafting for 8 ", meet design requirement.

Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art is in the principle and objective without departing from the present invention In the case of above-described embodiment can be changed within the scope of the invention, change, replace and modification.

Claims (1)

1. a kind of two-way single-shaft holds precision bearing system assembly method, it is characterised in that：Comprise the following steps：

Step 1：Measurement bearing bulge quantity：Bearing inner race is installed in frock support shaft, is applied in bearing outer ring by load block Plus axial force, bulge quantity δ 1 and δ 2 of the bearing inner race relative to outer ring is measured by dial gauge, wherein δ 1 is upper bearing (metal) protrusion Amount, δ 2 is lower bearing bulge quantity；

Step 2：The distance between measurement upper bearing (metal) inner ring and lower bearing inner ring L1, measurement upper bearing (metal) outer ring and lower axle bearing outer-ring it Between apart from L2；

Step 3：Calculate inner ring adjust pad thickness=L2-L1- δ 1- δ 2；

Step 4：Reconditioning inner ring adjust pad is to requiring thickness；

Step 5：Sequence ligand is taken up according to normal axis, shafting assembling is completed.