CN110153677A - Automobile bearing assembly technology based on wall thickness hierarchical detection system - Google Patents
Automobile bearing assembly technology based on wall thickness hierarchical detection system Download PDFInfo
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- CN110153677A CN110153677A CN201810208969.6A CN201810208969A CN110153677A CN 110153677 A CN110153677 A CN 110153677A CN 201810208969 A CN201810208969 A CN 201810208969A CN 110153677 A CN110153677 A CN 110153677A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/02—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
- G01B21/08—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness for measuring thickness
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
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- Automatic Assembly (AREA)
Abstract
The present invention provides a kind of automobile bearing assembly technology based on wall thickness hierarchical detection system, include the following steps: a, distinguish bearing shell according to wall thickness, it is divided into four ranks on the basis of liner wall thickness design nominal value A, each rank liner wall thickness section is as follows: I rank: [A-0.04, A-0.02), II rank: [A-0.02, A), III level is other: [A, A+0.02), IV rank: [A+0.02, A+0.04]；B, the internal diameter D1 of part matching hole and the outer diameter D 2 of axis are measured using measuring device, and by records of values；C, institute's value in step b is calculated into [D1-D2 (1+0.001)]/2 as follows and obtains numerical value A0, the bearing shell for choosing rank corresponding to the wall thickness section that A0 is fallen into is installed；D, bearing shell selected in step c is pre-tightened on press-fit tool using pre-tightening tool；E, the bearing shell pulled tight in advance on press-fit tool is press-fitted in part matching hole using press.The technique meets Sleeve assembling clearance requirement in the case where not improving the difficulty of processing of existing hole in piece part, axis by being classified to liner wall thickness.
Description
Technical field
The invention belongs to automobile engine mounting technology field, specifically a kind of automobile based on wall thickness hierarchical detection system
Sleeve assembling technique.
Background technique
Bearing shell is one kind of sliding bearing, and shape is the semicircular arc of tiles, and medial surface is very smooth, general with green
The wear-resistant materials such as copper, antifriction alloy are made, and under special circumstances, can be made of timber, engineering plastics or rubber.Bearing shell work
When, there is the gap of very little between bearing shell and shaft, be full of lubricating oil in gap and form one layer of very thin oil film, this layer is very thin
Oil film plays lubricating action.
Modern Automobile Engine structure is more and more compacter, and engine interior redundant space is smaller and smaller, and bearing shell is because of its volume
It is small, be widely used in automobile engine the advantages that high lubricating effect under high-speed motion state, especially as crankshaft journal with
Lubricating component between crankcase.Since bearing shell and crankshaft journal fit clearance are less than rolling bearing clearance, bearing shell is being played
Lubricating component effect is unexpected also to have positioning action.
Since gap is minimum between bearing shell and shaft, generally the 0.001 of shaft diameter, gap is excessive to will lead to shaft diameter
Serious to shaking, vibration is excessive, and shaft is easy to cause to deform, and shaft fracture is resulted even in when serious；Gap can be led when too small
It causes oil film uneven, causes insufficient lubrication, there is direct friction if insufficient lubrication, between bearing shell and shaft, rub meeting
Very high temperature is generated, although bearing shell is made of special High-temperature resistant alloy material, the high temperature that direct friction generates occurs
Still it is enough to be burnt out.Bearing shell be also possible to due to load is excessive, temperature is excessively high, lubricating oil there are impurity or viscosity it is abnormal etc. because
Element causes tile kilning.Bearing shell just damages after tile kilning.Therefore the gap width between bearing shell and shaft is particularly significant, if control is inaccurate
Really engine is easy to cause major accident occur in later period operation process.
Current engine assembly technique is guaranteed by strict control part aperture, axle journal and liner wall thickness size
Gap between bearing shell and shaft after assembly, but since gap width is too small leads to tolerance in part process extremely
Strictly, rejection rate is substantially increased, production cost and production cycle are significantly increased.
Summary of the invention
Goal of the invention: the purpose of the present invention is provide a kind of based on wall thickness hierarchical detection for the deficiency in current technology
The automobile bearing assembly technology of system, by being classified to liner wall thickness, in the difficulty of processing for not improving existing hole in piece part, axis
In the case where meet Sleeve assembling clearance requirement.
Technical solution: to achieve the above object, the present invention provides a kind of automobile bearing based on wall thickness hierarchical detection system
Assembly technology includes the following steps that numerical value unit is mm in following step:
A, bearing shell is distinguished according to wall thickness, on the basis of liner wall thickness design nominal value A, is divided into four ranks, often
A rank liner wall thickness section is as follows:
I rank: [A-0.04, A-0.02)
II rank: [A-0.02, A)
III level is other: [A, A+0.02)
IV rank: [A+0.02, A+0.04]；
B, the internal diameter D1 of matching hole on part and the outer diameter D 2 of axis are measured using measuring device, and numerical value is carried out
Record；
C, institute's value in step b is calculated as follows:
[D1-D2·(1+0.001)]/2
Numerical value A0 is obtained, the bearing shell for choosing rank corresponding to the wall thickness section that A0 is fallen into is installed；
D, bearing shell selected in step c is pre-tightened on press-fit tool using pre-tightening tool；
E, the bearing shell pulled tight in advance on press-fit tool is press-fitted in part matching hole using press.
Pre-tightening tool used in step d includes that pedestal, fixed preload block and activity pre-tighten block, and the fixation pre-tightens block
It is fixedly connected with pedestal, the activity pre-tightens block and is slidably connected with pedestal, and the fixed preload block pre-tightens opposite on block with activity
Title part is provided with semicircle orifice, and two halves circular hole can form a complete circle after movable preload block is contacted with fixed preload block
Hole, the circle bore dia and bearing shell diametric fit are corresponding on the pedestal fixed to pre-tighten the setting of block upper half circular hole center location
There is through-hole, the through-hole diameter is less than semicircle bore dia.
Press-fit tool used in step e includes ontology, pressure head, pre- mandrel, guide rod and sliding outer cover, and the ontology is
Column structure, ontology upper end connect pressure head, and ontology lower end is provided with shoulder lift, and the shoulder portion of carrying off is connected with pre- mandrel, the pre- mandrel
Diameter and Pad radius cooperate；The pre- mandrel lower part is connected with guide rod, and the guide rod is long straight cylinder body rod, guide rod, preload
Axis, ontology and facing pressure head are coaxial.
As a kind of improvement of this programme, press-fit tool is also combined with part fixing tool, the part fixing tool packet
Pedestal and compression plate are included, is connected between the pedestal and compression plate by support column, compression plate is located at top, compression plate upper surface
For preventing part, it is provided with protrusion on the downside of the compression plate, is provided with perforative guide hole, the guide hole and institute in the protrusion
State guide rod cooperation；Positioning device is provided on the compression plate for retaining element.
As a kind of improvement of this programme, activity pre-tightens block and is connected with cylinder, can push preload block sliding by Telescopic-cylinder
It is dynamic.
As a kind of improvement of this programme, the outer body movable sleeve of press-fit tool is connected to sliding outer cover, outside the sliding
In pre- mandrel can be coated on completely by set when being located at lower limit position, it is maximum to be greater than bearing shell for gap between sliding outer cover and pre- mandrel
Wall thickness.
As a kind of improvement of this programme, it is provided with the key body of protrusion on guide rod, is provided in the guide hole and matches with key body
The keyway of conjunction, key body can slide in keyway.
As a kind of improvement of this programme, the internal diameter D1 of matching hole and the outer diameter D 2 of axis pass through survey on part in step b
Amount equipment at least measures to be averaged to obtain three times afterwards.
The utility model has the advantages that the automobile bearing assembly technology of the present invention based on wall thickness hierarchical detection system is by by bearing shell
It is classified according to wall thickness, by carrying out diameter measurement to pilot hole and axis in assembling process, obtains being able to satisfy bearing shell after assembly
The wall thickness section in gap, and then determine liner wall thickness rank, select the bearing shell of corresponding level to be press-fitted, it is ensured that every hair
Motivation bush gap meets the requirements, while reducing bearing shell and needing to assemble the size requirement of the part of bearing shell, greatly reduces production
Cost shortens the production cycle.
Pre-tightening tool and press-fit tool cooperation can pre-tighten bearing shell on the pre- mandrel for pressing and being attached to press-fitting work, convenient
Subsequent press-fitting is carried out, while being press-fitted in work and being provided with sliding outer cover, when bearing shell is pre- next, sliding outer cylinder glides, can be by bearing shell
In being coated on, prevents bearing shell from colliding with before being press-fitted using press with the external world and damage.It is provided on press-fit tool simultaneously
Guide rod, guide rod can guarantee that pilot hole is same on the bearing shell and part pre-tightened during press-fitting with the guide hole cooperation on part fixing tool
Axis guarantees that bearing shell can be smoothly press-fitted.
Measuring process and the selection of bearing shell rank in the automobile bearing assembly technology based on wall thickness hierarchical detection system
Step can be realized by modern automation equipment, greatly reduce artificial investment, accelerated bearing shell rank selection course, greatly improved
Sleeve assembling efficiency.
Detailed description of the invention
Fig. 1, prepackage tool structure schematic diagram；
Fig. 2, press-fit tool structural schematic diagram；
Fig. 3, guide rod cross-section diagram；
Fig. 4, bearing shell pre-install process schematic；
Fig. 5, bearing shell are press-fitted process schematic；
Fig. 6, the automobile bearing assembly equipment frame diagram based on wall thickness hierarchical detection system；
Reference signs list: 1, pedestal；2, fixed to pre-tighten block；3, activity pre-tightens block；4, cylinder；5, sliding slot；6, through-hole；7,
Ontology；8, pressure head；9, shoulder is lifted；10, pre- mandrel；11, guide rod；12, key body；13, sliding outer cover；14, bearing shell；15, press；16,
Compression bar；17, part；18, matching hole；19, pedestal；20, compression plate；21, support column；22, raised；23, guide hole；24, keyway.
Specific embodiment
Below based on embodiment, present invention is described, but it is worth noting that, the present invention is not limited to these realities
Apply example.It is detailed to describe some specific detail sections below in datail description of the invention.However, for not detailed
The present invention can also be understood completely in the part described to the greatest extent, those skilled in the art.
In addition, it should be understood by one skilled in the art that provided attached drawing simply to illustrate that the purpose of the present invention,
Feature and advantage, attached drawing are not to be drawn to scale.
Meanwhile unless the context clearly requires otherwise, "include", "comprise" etc. otherwise throughout the specification and claims
Similar word should be construed as the meaning for including rather than exclusive or exhaustive meaning；That is, being " including but not limited to "
Meaning.
Embodiment 1
A kind of automobile bearing assembly technology based on wall thickness hierarchical detection system, includes the following steps, number in following step
Value unit is mm:
A, bearing shell 14 is distinguished according to wall thickness, on the basis of 14 wall thickness of bearing shell design nominal value A, is divided into four grades
Not, each 14 wall thickness section of rank bearing shell is as follows:
I rank: [A-0.04, A-0.02)
II rank: [A-0.02, A)
III level is other: [A, A+0.02)
IV rank: [A+0.02, A+0.04]；
B, the internal diameter D1 of matching hole 18 on part 17 and the outer diameter D 2 of axis are measured using measuring device, and by numerical value
It is recorded, the outer diameter D 2 of the internal diameter D1 of matching hole 18 and axis is at least measured by measuring device and made even afterwards three times on part 17
Mean value obtains；
C, institute's value in step b is calculated as follows:
[D1-D2·(1+0.001)]/2
Numerical value A0 is obtained, the bearing shell 14 for choosing rank corresponding to the wall thickness section that A0 is fallen into is installed；
D, bearing shell 14 selected in step c is pre-tightened on press-fit tool using pre-tightening tool；
E, the bearing shell 14 pulled tight in advance on press-fit tool is press-fitted in 17 matching hole 18 of part using press 15.
As shown in Figure 1, pre-tightening tool used in step d includes that pedestal 1, fixed preload block 2 and activity pre-tighten block 3,
The fixed block 2 that pre-tightens is fixedly connected with pedestal 1, and activity pre-tightens block 3 and is slidably connected with pedestal 1, sliding slot 5 is provided on pedestal 1, activity
Block 3 is pre-tightened to slide in sliding slot 5 by sliding equipment；Fixed preload block 2 and activity pre-tighten symmetrical part on block 3 and are provided with half
Circular hole, activity, which pre-tightens two halves circular hole after block 3 is contacted with fixed preload block 2, can form a complete round hole, round bore dia
With 14 diametric fit of bearing shell, the corresponding fixed 2 upper half circular hole center location of block that pre-tightens is provided with through-hole 6,6 diameter of through-hole on pedestal 1
Less than semicircle bore dia.Activity pre-tightens block 3 and is connected with cylinder 4, can pre-tighten block sliding by flexible push of cylinder 4.
As shown in Fig. 2, press-fit tool used in step e includes ontology 7, pressure head 8, pre- mandrel 10, guide rod 11 and slides
Dynamic housing 13, the ontology 7 are column structure, and 7 upper end of ontology connects pressure head 8, and 7 lower end of ontology is provided with shoulder lift 9, under shoulder lift 9
Portion is connected with pre- mandrel 10, and pre- 10 diameter of mandrel and 14 internal diameter of bearing shell cooperate；Pre- 10 lower part of mandrel is connected with guide rod 11, guide rod 11
For long straight cylinder body rod, guide rod 11, pre- mandrel 10, ontology 7 and facing pressure head 8 are coaxial.The 7 outside activity of ontology of press-fit tool
It is socketed with sliding outer cover 13, pre- mandrel 10 can be coated on completely to interior, sliding outer cover when sliding outer cover 13 is located at lower limit position
Gap is greater than 14 thickest of bearing shell between 13 and pre- mandrel 10.It is provided with the key body 12 of protrusion 22 on guide rod 11, has key body
12 11 section configuration of guide rod is as shown in Figure 3.
Fig. 4 pre-tightens process for bearing shell 14, and bearing shell 14 select in step c is individually placed to fixed preload block 2 and is lived
In the dynamic semicircle orifice pre-tightened on block 3,14 outside wall surface of bearing shell is close to semicircle orifice inner wall, and press-fit tool guide rod 11 is passed through through-hole 6,
Outer cylinder pull-up is slided, pre- mandrel 10 is close to fixed 14 inner wall of bearing shell pre-tightened in block 2, starts cylinder 4, and activity pre-tightens block 3 and exists
The movement of block 2 is pre-tightened to fixed under the promotion of cylinder 4, activity pre-tightens the bearing shell 14 in block 3 and pastes under promotion with another halfliner 14
Amount to same be attached on pre- mandrel 10.Cylinder 4 retracts at this time, picks up press-fit tool, sliding outer cover 13 glides, by the bearing shell of preload
14 be coated in.
Fig. 5 is that bearing shell 14 is press-fitted process, and as seen from the figure, press-fit tool is also combined with 17 fixing tool of part, and part 17 is solid
Determining tooling includes pedestal 19 and compression plate 20, is connected between pedestal 19 and compression plate 20 by support column 21, compression plate 20 is located at
Top, 20 upper surface of compression plate are provided with protrusion 22, are provided with and run through in protrusion 22 for preventing part 17 on the downside of compression plate 20
Guide hole 23, guide hole 23 and the guide rod 11 cooperate；Positioning device is provided on compression plate 20 for retaining element 17.Guide hole 23
It is inside provided with the keyway 24 cooperated with key body 12, key body 12 can slide in keyway 24.When press-fitting, the positioning of part 17 is fixed on
On compression plate 20, the pilot hole and guide hole 23 on compression plate 20 for assembling bearing shell 14 are coaxial, and press-fit tool guide rod 11 is inserted into
In guide hole 23, guarantee that bearing shell 14 and pilot hole are coaxial, the compression bar 16 of press 15 pushes, and contact pressure head 8 is pushed work is press-fitted, will
Bearing shell 14 is pressed into pilot hole.
Embodiment 2
A kind of automobile bearing assembly technology based on wall thickness hierarchical detection system, includes the following steps, number in following step
Value unit is mm:
A, bearing shell 14 is distinguished according to wall thickness, on the basis of 14 wall thickness of bearing shell design nominal value A, is divided into four grades
Not, each 14 wall thickness section of rank bearing shell is as follows:
I rank: [A-0.04, A-0.02)
II rank: [A-0.02, A)
III level is other: [A, A+0.02)
IV rank: [A+0.02, A+0.04]；
B, the internal diameter D1 of matching hole 18 on part 17 and the outer diameter D 2 of axis are measured using measuring device, and by numerical value
It is recorded, the outer diameter D 2 of the internal diameter D1 of matching hole 18 and axis is at least measured by measuring device and made even afterwards three times on part 17
Mean value obtains；
C, institute's value in step b is calculated as follows:
[D1-D2·(1+0.001)]/2
Numerical value A0 is obtained, the bearing shell 14 for choosing rank corresponding to the wall thickness section that A0 is fallen into is installed；
D, bearing shell 14 selected in step c is pre-tightened on press-fit tool using pre-tightening tool；
The bearing shell 14 pulled tight in advance on press-fit tool is press-fitted in 17 matching hole 18 of part using press 15.
As shown in fig. 6, the wall thickness in a kind of 14 assembly technology of automobile bearing based on wall thickness hierarchical detection system is classified inspection
Examining system includes control centre's module, input module, output module, automatic measuring equipment, data storage module and data analysis
Module.It is mutually interconnected between each control centre's module and input module, output module, automatic measurement module and data memory module
Data are connect and can transmit, data analysis module can read and call the data in data storage module.In use, operator
14 rank of bearing shell and the corresponding wall thickness section of each rank bearing shell 14 are inputted by input module, by the electronic, horological diameter of axle and gaging hole diameter
Measuring device connect control centre, after operator measures the diameter of axle and aperture using measuring device, the data that measure will be transmitted
Enter data memory module, analyzed after data analysis module activity data and obtain it is corresponding should select 14 rank of bearing shell, and
14 rank of bearing shell is shown by output module, bearing shell 14 can be selected after operator's acquisition 14 rank of bearing shell and be press-fitted.
As shown in Figure 1, pre-tightening tool used in step d includes that pedestal 1, fixed preload block 2 and activity pre-tighten block 3,
The fixed block 2 that pre-tightens is fixedly connected with pedestal 1, and activity pre-tightens block 3 and is slidably connected with pedestal 1, sliding slot 5 is provided on pedestal 1, activity
Block 3 is pre-tightened to slide in sliding slot 5 by sliding equipment；Fixed preload block 2 and activity pre-tighten symmetrical part on block 3 and are provided with half
Circular hole, activity, which pre-tightens two halves circular hole after block 3 is contacted with fixed preload block 2, can form a complete round hole, round bore dia
With 14 diametric fit of bearing shell, the corresponding fixed 2 upper half circular hole center location of block that pre-tightens is provided with through-hole 6,6 diameter of through-hole on pedestal 1
Less than semicircle bore dia.Activity pre-tightens block 3 and is connected with cylinder 4, can pre-tighten block sliding by flexible push of cylinder 4.
As shown in Fig. 2, press-fit tool used in step e includes ontology 7, pressure head 8, pre- mandrel 10, guide rod 11 and slides
Dynamic housing 13, the ontology 7 are column structure, and 7 upper end of ontology connects pressure head 8, and 7 lower end of ontology is provided with shoulder lift 9, under shoulder lift 9
Portion is connected with pre- mandrel 10, and pre- 10 diameter of mandrel and 14 internal diameter of bearing shell cooperate；Pre- 10 lower part of mandrel is connected with guide rod 11, guide rod 11
For long straight cylinder body rod, guide rod 11, pre- mandrel 10, ontology 7 and facing pressure head 8 are coaxial.The 7 outside activity of ontology of press-fit tool
It is socketed with sliding outer cover 13, pre- mandrel 10 can be coated on completely to interior, sliding outer cover when sliding outer cover 13 is located at lower limit position
Gap is greater than 14 thickest of bearing shell between 13 and pre- mandrel 10.It is provided with the key body 12 of protrusion 22 on guide rod 11, has key body
12 11 section configuration of guide rod is as shown in Figure 3.
Fig. 4 pre-tightens process for bearing shell 14, and bearing shell 14 select in step c is individually placed to fixed preload block 2 and is lived
In the dynamic semicircle orifice pre-tightened on block 3,14 outside wall surface of bearing shell is close to semicircle orifice inner wall, and press-fit tool guide rod 11 is passed through through-hole 6,
Outer cylinder pull-up is slided, pre- mandrel 10 is close to fixed 14 inner wall of bearing shell pre-tightened in block 2, starts cylinder 4, and activity pre-tightens block 3 and exists
The movement of block 2 is pre-tightened to fixed under the promotion of cylinder 4, activity pre-tightens the bearing shell 14 in block 3 and pastes under promotion with another halfliner 14
Amount to same be attached on pre- mandrel 10.Cylinder 4 retracts at this time, picks up press-fit tool, sliding outer cover 13 glides, by the bearing shell of preload
14 be coated in.
Fig. 5 is that bearing shell 14 is press-fitted process, and as seen from the figure, press-fit tool is also combined with 17 fixing tool of part, and part 17 is solid
Determining tooling includes pedestal 19 and compression plate 20, is connected between pedestal 19 and compression plate 20 by support column 21, compression plate 20 is located at
Top, 20 upper surface of compression plate are provided with protrusion 22, are provided with and run through in protrusion 22 for preventing part 17 on the downside of compression plate 20
Guide hole 23, guide hole 23 and the guide rod 11 cooperate；Positioning device is provided on compression plate 20 for retaining element 17.Guide hole 23
It is inside provided with the keyway 24 cooperated with key body 12, key body 12 can slide in keyway 24.When press-fitting, the positioning of part 17 is fixed on
On compression plate 20, the pilot hole and guide hole 23 on compression plate 20 for assembling bearing shell 14 are coaxial, and press-fit tool guide rod 11 is inserted into
In guide hole 23, guarantee that bearing shell 14 and pilot hole are coaxial, the compression bar 16 of press 15 pushes, and contact pressure head 8 is pushed work is press-fitted, will
Bearing shell 14 is pressed into pilot hole.
The technical means disclosed in the embodiments of the present invention is not limited only to technological means disclosed in above embodiment, further includes
Technical solution consisting of any combination of the above technical features.
Claims (8)
1. a kind of automobile bearing assembly technology based on wall thickness hierarchical detection system, which is characterized in that include the following steps, it is following
Numerical value unit is mm in step:
A, bearing shell (14) is distinguished according to wall thickness, on the basis of bearing shell (14) wall thickness design nominal value A, is divided into four grades
Not, each rank bearing shell (14) wall thickness section is as follows:
I rank: [A-0.04, A-0.02)
II rank: [A-0.02, A)
III level is other: [A, A+0.02)
IV rank: [A+0.02, A+0.04]；
B, the internal diameter D1 of matching hole (18) on part (17) and the outer diameter D 2 of axis are measured using measuring device, and by numerical value
It is recorded；
C, institute's value in step b is calculated as follows:
[D1-D2·(1+0.001)]/2
Numerical value A0 is obtained, the bearing shell (14) for choosing rank corresponding to the wall thickness section that A0 is fallen into is installed；
D, bearing shell (14) selected in step c is pre-tightened on press-fit tool using pre-tightening tool；
E, the bearing shell pulled tight in advance on press-fit tool (14) is press-fitted in part (17) matching hole (18) using press (15).
2. a kind of automobile bearing assembly technology based on wall thickness hierarchical detection system as described in claim 1, it is characterised in that:
The pre-tightening tool includes that pedestal (1), fixed preload block (2) and activity pre-tighten block (3), and the fixation pre-tightens block (2) and pedestal
(1) it is fixedly connected, the activity pre-tightens block (3) and is slidably connected with pedestal (1), and fixed preload block (2) and activity pre-tighten block
(3) symmetrical part is provided with semicircle orifice on, and activity pre-tightens two halves circular hole after block (3) are contacted with fixed preload block (2) and can be formed
One complete round hole, the circle bore dia and bearing shell (14) diametric fit are corresponding on the pedestal (1) fixed to pre-tighten block
(2) upper half circular hole center location is provided with through-hole (6), and through-hole (6) diameter is less than semicircle bore dia.
3. a kind of automobile bearing assembly technology based on wall thickness hierarchical detection system as described in claim 1, it is characterised in that:
The press-fit tool includes ontology (7), pressure head (8), pre- mandrel (10), guide rod (11) and sliding outer cover (13), the ontology (7)
For column structure, ontology (7) upper end connects pressure head (8), and ontology (7) lower end is provided with shoulder lift (9), and shoulder lift (9) lower part is connected with
Pre- mandrel (10), pre- mandrel (10) diameter and bearing shell (14) internal diameter cooperate；Pre- mandrel (10) lower part is connected with guide rod
(11), the guide rod (11) is long straight cylinder body rod, and guide rod (11), pre- mandrel (10), ontology (7) and facing pressure head (8) are same
Axis.
4. a kind of automobile bearing assembly technology based on wall thickness hierarchical detection system as claimed in claim 3, it is characterised in that:
The press-fit tool is also combined with part (17) fixing tool, and part (17) fixing tool includes pedestal (19) and compression plate
(20), it is connected between the pedestal (19) and compression plate (20) by support column (21), compression plate (20) is located at top, compression plate
(20) upper surface is provided with raised (22) for preventing part (17) on the downside of the compression plate (20), is set on the protrusion (22)
It is equipped with perforative guide hole (23), the guide hole (23) and the guide rod (11) cooperate；Positioning is provided on the compression plate (20)
Device is used for retaining element (17).
5. a kind of automobile bearing assembly technology based on wall thickness hierarchical detection system as claimed in claim 2, it is characterised in that:
The activity pre-tightens block (3) and is connected with cylinder (4), can pre-tighten block sliding by cylinder (4) flexible push.
6. a kind of automobile bearing assembly technology based on wall thickness hierarchical detection system as claimed in claim 4, it is characterised in that:
Movable sleeve is connected to sliding outer cover (13) on the outside of the ontology (7) of the press-fit tool, and the sliding outer cover (13) is located at limit inferior position
In being coated on completely pre- mandrel (10) when setting, gap is greater than bearing shell (14) most between sliding outer cover (13) and pre- mandrel (10)
Big wall thickness.
7. a kind of automobile bearing assembly technology based on wall thickness hierarchical detection system as claimed in claim 6, it is characterised in that:
It is provided with the key body (12) of raised (22) on the guide rod (11), the key with key body (12) cooperation is provided in the guide hole (23)
Slot (24), key body (12) can the slidings in keyway (24).
8. a kind of automobile bearing assembly technology based on wall thickness hierarchical detection system as described in claim 1, it is characterised in that:
The outer diameter D 2 of the internal diameter D1 of matching hole (18) and axis is at least measured three times by measuring device on part (17) in the step b
After be averaged to obtain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810208969.6A CN110153677A (en) | 2018-03-14 | 2018-03-14 | Automobile bearing assembly technology based on wall thickness hierarchical detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810208969.6A CN110153677A (en) | 2018-03-14 | 2018-03-14 | Automobile bearing assembly technology based on wall thickness hierarchical detection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110153677A true CN110153677A (en) | 2019-08-23 |
Family
ID=67635842
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810208969.6A Pending CN110153677A (en) | 2018-03-14 | 2018-03-14 | Automobile bearing assembly technology based on wall thickness hierarchical detection system |
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| CN (1) | CN110153677A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112975338A (en) * | 2021-02-22 | 2021-06-18 | 一汽解放汽车有限公司 | Engine bearing bush installation and dismantlement frock |
| CN114179025A (en) * | 2021-11-23 | 2022-03-15 | 广州豪进摩托车股份有限公司 | Bearing bush installation tool |
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Cited By (4)
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|---|---|---|---|---|
| CN112975338A (en) * | 2021-02-22 | 2021-06-18 | 一汽解放汽车有限公司 | Engine bearing bush installation and dismantlement frock |
| CN112975338B (en) * | 2021-02-22 | 2022-07-08 | 一汽解放汽车有限公司 | Engine bearing bush installation and dismantlement frock |
| CN114179025A (en) * | 2021-11-23 | 2022-03-15 | 广州豪进摩托车股份有限公司 | Bearing bush installation tool |
| CN114179025B (en) * | 2021-11-23 | 2024-04-19 | 广州豪进摩托车股份有限公司 | Bearing bush installation tool |
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