CN103878442A - Machining method for bearing seat installation holes - Google Patents

Machining method for bearing seat installation holes Download PDF

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Publication number
CN103878442A
CN103878442A CN201410116148.1A CN201410116148A CN103878442A CN 103878442 A CN103878442 A CN 103878442A CN 201410116148 A CN201410116148 A CN 201410116148A CN 103878442 A CN103878442 A CN 103878442A
Authority
CN
China
Prior art keywords
hole
rivet
casing
processing
bearing block
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201410116148.1A
Other languages
Chinese (zh)
Inventor
李桂花
戴贺明
范洪莉
赵磊
王影
刘向影
苏云龙
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AVIC Harbin Dongan Engine Group Co Ltd
Original Assignee
AVIC Harbin Dongan Engine Group Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by AVIC Harbin Dongan Engine Group Co Ltd filed Critical AVIC Harbin Dongan Engine Group Co Ltd
Priority to CN201410116148.1A priority Critical patent/CN103878442A/en
Publication of CN103878442A publication Critical patent/CN103878442A/en
Pending legal-status Critical Current

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Abstract

The invention relates to a machining method for bearing seat installation holes. Cases are assembled through rivets, locating pin holes are machined after assembly, the bearing seat installation holes are machined through the position relation of locating pins, one process is adopted in the machining process, and therefore the work reliability of rotation shafts is guaranteed. According to the machining method, a preassembly process is adopted, the bearing seat installation holes are machined in the same process, and therefore the position accuracy of bearing seats installed on the two matched cases is improved, the coaxiality of the two bearing seats is guaranteed, and the work reliability of the rotation shafts is achieved.

Description

The processing method of bearing block installing hole
Technical field
The present invention relates to a kind of processing method, especially a kind of processing method of bearing block installing hole.
Background technology
Bearing is one of component part indispensable in mechanical system, is normally arranged on the two ends of rotating shaft by bearing block, for the normal work of rotating shaft provides guarantee.When the work of bearing, permissible accuracy is higher, therefore needs bearings mounted position on bearing block will reach certain index.Especially in aeronautical product, due to the requirement of the factors such as flight safety, need the installation accuracy of bearing will be higher than the mechanical system in other field, therefore, more strict to the processing request of bearing block installing hole.At the gear reduction box of aeronautical product, bearing block is mounted on two casings that match.Generally, by first process two dowel holes on corresponding casing, by the position relationship of the dowel hole on two casings, through calculating, draw the desired indices of processing of bearing block installing hole, and then taking dowel hole as benchmark machining shaft bearing installing hole, ensure the relative position of two casing top chocks with this.But this processing method can produce accumulated error, thereby after easily causing the processing of bearing block installing hole, error increases.After two casings installations together, if under limit error state, if the position degree deviation of two casing upper bearing (metal) mount pad installing holes is reverse, can on two casing upper bearing (metal) mount pad installing holes, produce accumulated error, and then make the axiality of rotating shaft larger, operational vibration and wearing and tearing strengthen, or make uneven the carrying of gear engagement of installing on rotating shaft, cause the too early damage of gear.
Summary of the invention
The object of this invention is to provide a kind of processing method of bearing block installing hole, make to be arranged on two bearing block position precision on the casing matching and improve, ensure the axiality of two bearing blocks, realize the functional reliability of rotating shaft.
Technical scheme of the present invention is that the processing method of bearing block installing hole comprises the following steps:
1. on two casings, rivet hole is respectively set, the rivet hole on two described casings is positioned at the same position after casing is installed;
2. on two casings, process rivet hole;
3. with rivet, two casings are fixedly connected with;
4. on casing, design and process dowel hole, described dowel hole work in-process once descends cutter, once-forming; Then equipped alignment pin on dowel hole;
According to the position of alignment pin and with the position relationship of bearing block installing hole, machining shaft bearing installing hole, the process of described machining shaft bearing installing hole is same operation;
6. pull down alignment pin and rivet, separate casing;
7. final inspection.
In above-mentioned steps, the position degree between described rivet hole is less than 0.1mm; Quantity is on each casing 4; In described step 2, machining screw on a casing is processed unthreaded hole and the conical surface on another casing therein, the described conical surface and the cone match of rivet; Rivet described in step 3 is the screw that one end is provided with the conical surface; On the threaded casing of described processing, between rivet and casing, be provided with steel-wire screw-socket, described steel-wire screw-socket is arranged on casing by external screw thread, and internal thread is installed rivet.
The present invention, in process, first assembles up casing by rivet, by the precision control of rivet hole, state and use state after casing is installed is consistent; After assembling, reprocess dowel hole, by once descending cutter, once-forming, has avoided the site error because of two dowel holes that processing produces separately, and then has also eliminated the accumulated error in former processing mode; By the position relationship of alignment pin, machining shaft bearing installing hole, it in process, is a procedure, because add two state consistencies that casing uses in man-hour, therefore the bearing block installing hole of an operation processing has also ensured axiality in use, thereby has ensured the functional reliability of rotating shaft.Meanwhile, because the material of casing is generally magnadure, lower hardness, in the time that rivet is installed, sets up steel-wire screw-socket, can increase installation strength, has ensured connective stability and reliability in process.The present invention is by pre-assembled process, and in same operation machining shaft bearing installing hole, make to be arranged on two bearing block position precision on the casing matching and improve, ensure the axiality of two bearing blocks, realize the functional reliability of rotating shaft.
Brief description of the drawings
Fig. 1 is two casing assembling schematic diagrames in the present invention;
Fig. 2 is this bearing block position of mounting hole schematic diagram;
Fig. 3 is riveted joint structure schematic diagram.
Detailed description of the invention
As shown in the figure, the processing method of bearing block installing hole comprises the following steps:
1. on two casings, rivet hole is respectively set, the rivet hole on two described casings is positioned at the same position after casing is installed;
2. on two casings, process rivet hole;
3. with rivet 3, two casings are fixedly connected with;
4. on casing, design and process dowel hole, described dowel hole work in-process once descends cutter, once-forming; Then equipped alignment pin 4 on dowel hole;
According to the position of alignment pin and with the position relationship of bearing block installing hole, machining shaft bearing installing hole 5, the process of described machining shaft bearing installing hole 5 is same operation;
6. pull down alignment pin 4 and rivet 3, separate casing;
7. final inspection.
In above-mentioned steps, the position degree between described rivet hole is less than 0.1mm; Quantity is on each casing 4; In described step 2, machining screw on a casing 1 is processed unthreaded hole and the conical surface on another casing 2 therein, the cone match of the described conical surface and rivet 3; Rivet 3 described in step 3 is provided with the screw of the conical surface for one end; On the threaded casing of described processing, be provided with steel-wire screw-socket 6 between rivet and casing, described steel-wire screw-socket is arranged on casing by external screw thread, and internal thread is installed rivet 3.
Embodiment
The bearing mounting base hole of the one-level driving gearshaft of certain turbo oar engine decelerator, for ensureing the normal engagement of herringbone bear, requiring the axiality after the processing of gear shaft bearings at both ends mount pad hole is 0, and it is 0.008 that cylindricity requires, and its concrete processing method is:
The processing method of bearing block installing hole comprises the following steps:
1. on two casings, rivet hole is respectively set, the rivet hole on two described casings is positioned at the same position after casing is installed;
2. on two casings, process rivet hole, wherein on a casing, process steel-wire screw-socket with hole, on another casing, process unthreaded hole and the conical surface, the described conical surface and the cone match of rivet, after processing, the position degree precision of rivet hole is 0.05mm;
3. steel-wire screw-socket is installed on casing, two casings is fixedly connected with rivet, when rivet is installed, ensure that the conical surface of rivet and the conical surface of casing fit completely;
4. on casing, design and process dowel hole, described dowel hole work in-process once descends cutter, once-forming; Then equipped alignment pin on dowel hole;
According to the position of alignment pin and with the position relationship of bearing block installing hole, machining shaft bearing installing hole, the process of described machining shaft bearing installing hole is same operation;
6. pull down alignment pin and rivet, separate casing;
7. final inspection.
In above-mentioned steps, described rivet hole is 4.

Claims (5)

1. a processing method for bearing block installing hole, is characterized in that, described method comprises the following steps:
1) on two casings, rivet hole is respectively set, the rivet hole on two described casings is positioned at the same position after casing is installed;
2) on two casings, process rivet hole;
3) with rivet (3), two casings are fixedly connected with;
4) on casing, design and process dowel hole, described dowel hole work in-process once descends cutter, once-forming; Then equipped alignment pin (4) on dowel hole;
5) according to the position of alignment pin and with the position relationship of bearing block installing hole, machining shaft bearing installing hole (5), the process of described machining shaft bearing installing hole (5) is same operation;
6) pull down alignment pin (4) and rivet (3), separate casing;
7) final inspection.
2. the processing method of bearing block installing hole as claimed in claim 1, is characterized in that, the position degree between described rivet hole is less than 0.1mm.
3. the processing method of bearing block installing hole as claimed in claim 1, is characterized in that, the quantity of described rivet hole is on each casing 4.
4. the processing method of bearing block installing hole as claimed in claim 1, it is characterized in that described step 2) in, the upper machining screw of a casing (1) therein, in another casing (2) upper processing unthreaded hole and the conical surface, the cone match of the described conical surface and rivet (3); Rivet (3) described in step 3) is provided with the screw of the conical surface for one end.
5. the processing method of bearing block installing hole as claimed in claim 4, it is characterized in that, on the threaded casing of described processing, between rivet and casing, be provided with steel-wire screw-socket (6), described steel-wire screw-socket is arranged on casing by external screw thread, and internal thread is installed rivet (3).
CN201410116148.1A 2014-03-26 2014-03-26 Machining method for bearing seat installation holes Pending CN103878442A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410116148.1A CN103878442A (en) 2014-03-26 2014-03-26 Machining method for bearing seat installation holes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410116148.1A CN103878442A (en) 2014-03-26 2014-03-26 Machining method for bearing seat installation holes

Publications (1)

Publication Number Publication Date
CN103878442A true CN103878442A (en) 2014-06-25

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410116148.1A Pending CN103878442A (en) 2014-03-26 2014-03-26 Machining method for bearing seat installation holes

Country Status (1)

Country Link
CN (1) CN103878442A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104913024A (en) * 2015-05-31 2015-09-16 简式国际汽车设计(北京)有限公司 Gear supporting structure, hub motor drive system and hub motor drive axle
CN106493503A (en) * 2016-11-25 2017-03-15 沈阳黎明航空发动机(集团)有限责任公司 A kind of rear housing precision bolt hole Combined machining process that repairs to the longevity
CN107991082A (en) * 2017-12-11 2018-05-04 中国航发南方工业有限公司 Aero-engine casing assembly bearing mounting hole combinational processing method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102328121A (en) * 2011-09-20 2012-01-25 浙江宝时德钢管有限公司 Special processing method and device of roller of hot rolling machine
CN102562821A (en) * 2012-02-29 2012-07-11 杨丽萍 Split combined retainer ring used on inner side of bearing outer ring
CN203297370U (en) * 2013-05-23 2013-11-20 陕西汉德车桥有限公司 Integral type differential bearing seat

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102328121A (en) * 2011-09-20 2012-01-25 浙江宝时德钢管有限公司 Special processing method and device of roller of hot rolling machine
CN102562821A (en) * 2012-02-29 2012-07-11 杨丽萍 Split combined retainer ring used on inner side of bearing outer ring
CN203297370U (en) * 2013-05-23 2013-11-20 陕西汉德车桥有限公司 Integral type differential bearing seat

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
刘刊: "采用"合并法"提高组合机床的装配精度和劳动生产率", 《组合机床与自动化加工技术》, no. 8, 31 December 1992 (1992-12-31), pages 45 - 48 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104913024A (en) * 2015-05-31 2015-09-16 简式国际汽车设计(北京)有限公司 Gear supporting structure, hub motor drive system and hub motor drive axle
CN106493503A (en) * 2016-11-25 2017-03-15 沈阳黎明航空发动机(集团)有限责任公司 A kind of rear housing precision bolt hole Combined machining process that repairs to the longevity
CN106493503B (en) * 2016-11-25 2019-02-12 沈阳黎明航空发动机(集团)有限责任公司 A kind of rear housing precision bolt hole Combined machining process repaired to the longevity
CN107991082A (en) * 2017-12-11 2018-05-04 中国航发南方工业有限公司 Aero-engine casing assembly bearing mounting hole combinational processing method
CN107991082B (en) * 2017-12-11 2021-02-09 中国航发南方工业有限公司 Combined machining method for bearing mounting hole of aero-engine casing assembly

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Application publication date: 20140625