CN109866106A - A kind of fixture of rubber bearing bush and method using fixture processing rubber bearing shell inner hole - Google Patents
A kind of fixture of rubber bearing bush and method using fixture processing rubber bearing shell inner hole Download PDFInfo
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- CN109866106A CN109866106A CN201910164859.9A CN201910164859A CN109866106A CN 109866106 A CN109866106 A CN 109866106A CN 201910164859 A CN201910164859 A CN 201910164859A CN 109866106 A CN109866106 A CN 109866106A
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- workpiece
- grinding wheel
- inner hole
- fixture
- wheel stick
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Abstract
A kind of fixture of rubber bearing bush and method using fixture processing rubber bearing shell inner hole, belong to field of machining.The method of previous processing rubber bearing shell, which easily leads to rubber bearing bush inner hole, to be occurred deforming or rubber melting layer.Specific procedure of processing: Step 1: workpiece is clamped by fixture；Step 2: clamping one end and the centering of fixture using numerically controlled lathe, grinding wheel stick is snapped on blade row, the other end of grinding wheel stick alignment pieces；Step 3: grinding wheel stick is ground since the proximate of workpiece, workpiece rotation, grinding wheel stick passes through the inside of entire workpiece；Step 4: stopping grinding, workpiece is lower in the raw to discharge stress；Step 5: workpiece is turned direction clamping and centering, using the hole size of numerically controlled lathe detection workpiece, grinding wheel stick lateral displacement amount, workpiece rotation are adjusted, grinding wheel stick is ground since the proximate of inner hole of workpiece；Step 6: stopping grinding, workpiece is lower in the raw to discharge stress.The present invention is used for the processing of rubber bearing bush inner hole.
Description
Technical field
The invention belongs to field of machining more particularly to the fixtures and utilization fixture processing rubber axis of a kind of rubber bearing bush
The method of watt inner hole.
Background technique
Rubber bearing bush belongs to sub-assembly, mainly by forming to spelling bearing shell body and coating, wherein to the material for spelling bearing shell body
For HMn58, i.e., soft and glutinous, the material of coating is rubber, and not only soft but also easy thawing is processed by the way of turning in the past
When the inner hole of rubber bearing bush, Cutting Force is larger, and the inner hole of rubber bearing bush is caused to occur deforming or rubber melting layer；Adding simultaneously
During work, if processing method and cutting parameter selection are bad, it is also easy to generate taper inner and rubber covering layer thawing etc.
Problem eventually leads to product quality defect.
Rubber bearing bush had not only belonged to thin-wall part but also had been made of two halves, if in processing, installation way is improper also will cause product
The problems such as deformation and upper lower half are ground one's teeth.
Summary of the invention
The technical problem to be solved in the invention is: rubber bearing bush easily leads to rubber bearing bush using previous processing method
Inner hole occurs deforming or the problem of rubber melting layer, and then provides a kind of processing method of rubber bearing bush inner hole.
The present invention to solve above-mentioned technical problem the technical solution adopted is that:
The fixture of the rubber bearing bush includes identical upper clamp half 1-1 and lower clamp half 1-2, upper clamp half 1-
The middle section of 1 and lower clamp half 1-2 is recessed outward, and the inner wall of upper clamp half 1-1 and the outside depressed section of lower clamp half 1-2
On be provided with multiple semi-circular grooves, the end of picking up the ears of the two of upper clamp half 1-1 and lower clamp half 1-2 is drilled with bolt hole, upper half respectively
The recess of fixture 1-1 and lower clamp half 1-2 are oppositely arranged and pass through bolt 2 and is fixedly connected, the annular ditch on fixture inner wall
Slot matches with the annular protrusion in workpiece outer wall.
The method of the processing rubber bearing shell inner hole, specific procedure of processing are as follows:
Step 1: the upper clamp half 1-1 of fixture and lower clamp half 1-2 is opened, workpiece is placed on upper clamp half 1-1 under
Between half fixture 1-2, and it is fixedly connected by bolt；
Step 2: clamping one end of fixture using the four paws chuck on numerically controlled lathe, and centering, grinding wheel stick is snapped into numerical control
On the blade row of lathe, the other end of grinding wheel stick alignment pieces, and the axis of grinding wheel stick is overlapped with the axis of workpiece；
Step 3: grinding wheel stick is ground since the proximal end of workpiece is towards distal end along the axis of workpiece, workpiece with itself
Axis is benchmark rotation, until grinding wheel stick passes through the inside of entire workpiece；
Step 4: stopping grinding, grinding wheel stick is removed, and fixture is unloaded from four paws chuck from workpiece, make workpiece
Under in the raw and discharge stress；
Step 5: workpiece is turned on the four paws chuck that direction is clamped on numerically controlled lathe, and centering, numerically controlled lathe is utilized
The hole size of workpiece is detected, grinding wheel stick lateral displacement amount is adjusted, the axis of grinding wheel stick and the axis of workpiece are parallel, and workpiece is with certainly
The axis of body is benchmark rotation, and grinding wheel stick is ground since the proximal end of inner hole of workpiece is towards distal end, carries out reaming processing；
Step 6: stopping grinding, grinding wheel stick is removed, and fixture is unloaded from four paws chuck from workpiece, make workpiece
Under in the raw and discharge stress；
Repeat the above steps five and step 6, until the inner hole of workpiece meets the requirements.
Further, in the step five, if taper occurs in the inner hole of workpiece, grinding wheel stick is adjusted by numerically controlled lathe
Angle between axis of workpiece makes the feeding angle of grinding wheel stick and the taper complementary of inner hole of workpiece, and workpiece is with the axis of itself
For benchmark rotation, grinding wheel stick is ground since the proximal end of inner hole of workpiece is towards distal end, carries out reaming processing.
Further, in the step four and step 6, workpiece is lower in the raw and to discharge stress at least 24 small
When.
Further, in the step three and step 5, the amount of feeding F=0.15-0.2mm/r of grinding wheel stick, workpiece master
Axis revolving speed r=2000-2500r/min.
Further, in the step three, the amount of feeding F=0.15mm/r of grinding wheel stick, speed of work spindle r=
2500r/min。
Further, in the step five, the amount of feeding F=0.15mm/r of grinding wheel stick, speed of work spindle r=
2500r/min。
The beneficial effects of the present invention are:
1, by way of grinding reaming processing rubber bearing shell inner hole, can prevent the inner hole of rubber bearing bush from deforming
Or rubber melting layer；
2, it takes to intersect from both ends and measures the mode being back and forth ground and processed, this processing method can be by grinding process
The stress of middle generation releases in time, can be effectively prevented and taper inner phenomenon occurs, can also avoid the occurrence of vibration knife phenomenon；
3, suitable grinding parameter in process, is selected, prevents the inner hole of rubber bearing bush from generating taper.
Detailed description of the invention
Overall structure diagram when Fig. 1 is fixture clamping workpiece；
Fig. 2 is the sectional view in Fig. 1 at A-A；
Fig. 3 is the sectional view of fixture.
Specific embodiment
To further illustrate the technical scheme of the present invention below with reference to the accompanying drawings and specific embodiments:
Specific embodiment 1: as shown in Figure 1,2 and 3, the fixture of rubber bearing bush described in present embodiment includes complete
The middle section of identical upper clamp half 1-1 and lower clamp half 1-2, upper clamp half 1-1 and lower clamp half 1-2 are recessed outward, and
Multiple semi-circular grooves, upper clamp half 1-1 are provided on the inner wall of upper clamp half 1-1 and the outside depressed section of lower clamp half 1-2
It picks up the ears to hold with the two of lower clamp half 1-2 and is drilled with bolt hole respectively, the recess of upper clamp half 1-1 and lower clamp half 1-2 are oppositely arranged
And be fixedly connected by bolt 2, the ring-shaped groove on fixture inner wall matches with the annular protrusion in workpiece outer wall.
Rubber bearing bush belongs to sub-assembly, mainly by forming to spelling bearing shell body and coating, wherein to the material for spelling bearing shell body
For HMn58, characteristic, that is, soft and glutinous is easily deformed in processing, and the material of coating is rubber, and characteristic is not only soft but also holds
Easily melt, and the part had not only belonged to thin-wall part but also had been made of two halves, if in processing, installation way is improper will result in product
The problems such as deformation and upper lower half are ground one's teeth.Using this clamp workpiece, control clamping dynamics that can be artificial according to material characteristic,
So as to avoid because clamping dynamics it is improper caused by workpiece deformation and upper lower half grind one's teeth the problem of.
Specific embodiment 2: the method for processing rubber bearing shell inner hole described in present embodiment, specific procedure of processing is such as
Under:
Step 1: the upper clamp half 1-1 of fixture and lower clamp half 1-2 is opened, workpiece is placed on upper clamp half 1-1 under
Between half fixture 1-2, and it is fixedly connected by bolt；
Step 2: clamping one end of fixture using the four paws chuck on numerically controlled lathe, and four paws chuck centering is used, by sand
Wheel stick snaps on the blade row of numerically controlled lathe, the other end of grinding wheel stick alignment pieces, and the axis weight of the axis of grinding wheel stick and workpiece
It closes；
Step 3: grinding wheel stick is ground since the proximal end of workpiece is towards distal end along the axis of workpiece, workpiece with itself
Axis is benchmark rotation, until grinding wheel stick passes through the inside of entire workpiece；
Step 4: stopping grinding, grinding wheel stick is removed, and fixture is unloaded from four paws chuck from workpiece, make workpiece
Under in the raw and discharge stress；
Step 5: workpiece is turned direction and on the four paws chuck that is clamped on numerically controlled lathe, using four paws chuck centering,
Using the hole size of numerically controlled lathe detection workpiece, grinding wheel stick lateral displacement amount, the axis of grinding wheel stick and the axis of workpiece are adjusted
In parallel, using the axis of itself as benchmark rotation, grinding wheel stick is ground workpiece since the proximal end of inner hole of workpiece is towards distal end；
Step 6: stopping grinding, grinding wheel stick is removed, and fixture is unloaded from four paws chuck from workpiece, make workpiece
Under in the raw and discharge stress；
Repeat the above steps five and step 6, until the inner hole of workpiece meets the requirements.
Since the material is soft for such sub-assembly, if only measuring processing when grinding from one end, circle product external change will lead to
There is phenomena such as taper inner in shape, in order to avoid there is the above problem, in grinding, takes to intersect from both ends and measure toward regrinding
The mode cut is processed, and this processing method, which has the effect that, to discharge the stress generated in grinding process in time
Out, it can be effectively prevented and taper inner phenomenon occur, vibration knife phenomenon can also be avoided the occurrence of.
Other compositions and connection type are same as the specific embodiment one.
Specific embodiment 3:, if taper occurs in the inner hole of workpiece, passing through number in step five described in present embodiment
The angle between lathe adjusting grinding wheel stick and axis of workpiece is controlled, the feeding angle of grinding wheel stick and the taper complementary of inner hole of workpiece are made,
Using the axis of itself as benchmark rotation, grinding wheel stick is ground workpiece since the proximal end of inner hole of workpiece is towards distal end, is carried out reaming and is added
Work.
Other compositions and connection type are identical with embodiment two.
Specific embodiment 4: workpiece is in nature shape in step four and step 6 described described in present embodiment
Under state and discharge stress at least 24 hours.
Other compositions and connection type are identical with embodiment two.
Specific embodiment 5: in step three and step 5 described in present embodiment, the amount of feeding F=of grinding wheel stick
0.15-0.2mm/r, speed of work spindle r=2000-2500r/min.
If grinding parameter selects the improper product that can not also process and meet drawing requirement, such as grinding ginseng in grinding
Number is excessive, will lead to rubber melting layer；If grinding parameter is too small, rubber material is again very soft, and can not go amount, so passing through
After repeatedly groping test, the best grinding parameter of selection is as follows: speed of mainshaft r=2000-2500r/min, amount of feeding F=
0.15-0.2mm/r etc..
Other compositions and connection type are identical with embodiment two.
Specific embodiment 6: in step three described in present embodiment, the amount of feeding F=0.15mm/r of grinding wheel stick, work
Part speed of mainshaft r=2500r/min.
Other compositions and connection type are identical as specific embodiment five.
Specific embodiment 7: in step five described in present embodiment, the amount of feeding F=0.2mm/r of grinding wheel stick, workpiece
Speed of mainshaft r=2500r/min.
Other compositions and connection type are identical as specific embodiment five.
Claims (7)
1. a kind of fixture of rubber bearing bush, it is characterised in that: it includes identical upper clamp half (1-1) and lower clamp half
The middle section of (1-2), upper clamp half (1-1) and lower clamp half (1-2) is recessed outward, and upper clamp half (1-1) and lower half folder
Multiple semi-circular grooves, upper clamp half (1-1) and lower clamp half (1-2) are provided on the inner wall of the outside depressed section of tool (1-2)
Two ends of picking up the ears be drilled with bolt hole respectively, the recess of upper clamp half (1-1) and lower clamp half (1-2) is oppositely arranged and passes through bolt
(2) it is fixedly connected, the ring-shaped groove on fixture inner wall matches with the annular protrusion in workpiece outer wall.
2. a kind of method of processing rubber bearing shell inner hole, it is characterised in that: work is clamped using the fixture described in claim 1
Part, specific procedure of processing are as follows:
Step 1: the upper clamp half (1-1) of fixture and lower clamp half (1-2) are opened, workpiece be placed on upper clamp half (1-1) and
Between lower clamp half (1-2), and it is fixedly connected by bolt；
Step 2: clamping one end of fixture using the four paws chuck on numerically controlled lathe, and centering, grinding wheel stick is snapped into numerically controlled lathe
Blade row on, the other end of grinding wheel stick alignment pieces, and the axis of grinding wheel stick is overlapped with the axis of workpiece；
Step 3: grinding wheel stick is ground since the proximal end of workpiece is towards distal end along the axis of workpiece, workpiece is with the axis of itself
For benchmark rotation, until grinding wheel stick passes through the inside of entire workpiece；
Step 4: stopping grinding, grinding wheel stick is removed, and fixture is unloaded from four paws chuck from workpiece, be in workpiece
Under natural conditions and discharge stress；
Step 5: workpiece is turned on the four paws chuck that direction is clamped on numerically controlled lathe, and centering, detected using numerically controlled lathe
The hole size of workpiece, adjust grinding wheel stick lateral displacement amount, the axis of grinding wheel stick and the axis of workpiece are parallel, workpiece with itself
Axis is benchmark rotation, and grinding wheel stick is ground since the proximal end of inner hole of workpiece is towards distal end, carries out reaming processing；
Step 6: stopping grinding, grinding wheel stick is removed, and fixture is unloaded from four paws chuck from workpiece, be in workpiece
Under natural conditions and discharge stress；
Repeat the above steps five and step 6, until the inner hole of workpiece meets the requirements.
3. the processing method of rubber bearing bush inner hole according to claim 2, it is characterised in that: in the step five, such as
There is taper in the inner hole of fruit workpiece, adjusts the angle between grinding wheel stick and axis of workpiece by numerically controlled lathe, make grinding wheel stick into
To the taper complementary of angle and inner hole of workpiece, workpiece is using the axis of itself as benchmark rotation, and grinding wheel stick is from the proximal end of inner hole of workpiece
Start to be ground towards distal end, carries out reaming processing.
4. the processing method of rubber bearing bush inner hole according to claim 2, it is characterised in that: the step four and step
In six, workpiece is lower in the raw and discharges stress at least 24 hours.
5. the processing method of rubber bearing bush inner hole according to claim 2, it is characterised in that: the step three and step
In five, the amount of feeding F=0.15-0.2mm/r of grinding wheel stick, speed of work spindle r=2000-2500r/min.
6. the processing method of rubber bearing bush inner hole according to claim 5, it is characterised in that: in the step three, sand
Take turns the amount of feeding F=0.15mm/r, speed of work spindle r=2500r/min of stick.
7. the processing method of rubber bearing bush inner hole according to claim 5, it is characterised in that: in the step five, sand
Take turns the amount of feeding F=0.2mm/r, speed of work spindle r=2500r/min of stick.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910164859.9A CN109866106A (en) | 2019-03-05 | 2019-03-05 | A kind of fixture of rubber bearing bush and method using fixture processing rubber bearing shell inner hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910164859.9A CN109866106A (en) | 2019-03-05 | 2019-03-05 | A kind of fixture of rubber bearing bush and method using fixture processing rubber bearing shell inner hole |
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| Publication Number | Publication Date |
|---|---|
| CN109866106A true CN109866106A (en) | 2019-06-11 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910164859.9A Pending CN109866106A (en) | 2019-03-05 | 2019-03-05 | A kind of fixture of rubber bearing bush and method using fixture processing rubber bearing shell inner hole |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110524314A (en) * | 2019-07-18 | 2019-12-03 | 庆安集团有限公司 | A kind of grinding method of elastic material |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1974126A (en) * | 2006-12-07 | 2007-06-06 | 钟洪 | Inner circle machining method and internal grinder therefor |
| CN101362307A (en) * | 2008-09-28 | 2009-02-11 | 湖北白莲河水电有限公司 | Tile surface processing novel technique of water guide rubber tile |
| CN203459928U (en) * | 2013-08-31 | 2014-03-05 | 扬州一丰铜业有限公司 | Combined clamp for processing bearing bush |
| CN104148680A (en) * | 2014-08-13 | 2014-11-19 | 山东理工大学 | Tool rest and programming machining technology capable of reducing cylindricity error during numerical control turning for slender axle |
-
2019
- 2019-03-05 CN CN201910164859.9A patent/CN109866106A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1974126A (en) * | 2006-12-07 | 2007-06-06 | 钟洪 | Inner circle machining method and internal grinder therefor |
| CN101362307A (en) * | 2008-09-28 | 2009-02-11 | 湖北白莲河水电有限公司 | Tile surface processing novel technique of water guide rubber tile |
| CN203459928U (en) * | 2013-08-31 | 2014-03-05 | 扬州一丰铜业有限公司 | Combined clamp for processing bearing bush |
| CN104148680A (en) * | 2014-08-13 | 2014-11-19 | 山东理工大学 | Tool rest and programming machining technology capable of reducing cylindricity error during numerical control turning for slender axle |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110524314A (en) * | 2019-07-18 | 2019-12-03 | 庆安集团有限公司 | A kind of grinding method of elastic material |
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Application publication date: 20190611 |