CN107855734A - A kind of processing technology of polytetrafluoroethylene (PTFE) mixing material retainer - Google Patents
A kind of processing technology of polytetrafluoroethylene (PTFE) mixing material retainer Download PDFInfo
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- CN107855734A CN107855734A CN201711071989.5A CN201711071989A CN107855734A CN 107855734 A CN107855734 A CN 107855734A CN 201711071989 A CN201711071989 A CN 201711071989A CN 107855734 A CN107855734 A CN 107855734A
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- locating dowel
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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
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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Abstract
A kind of processing technology of polytetrafluoroethylene (PTFE) mixing material retainer, belongs to machining technology field.The present invention solves the processing technology of existing polytetrafluoroethylene (PTFE) mixing material retainer because of secondary operation, secondary positioning, easily causes pockets processing deformation, and machining accuracy is low, and the problem of do not account for temperature fluctuation and influence quality.Concretely comprise the following steps：Roughly grind the in-car footpath of the external diameter → thin car first plane → thin car second plane → thin in-car footpath → first time constant temperature processing → fine grinding external diameter → plane of whole car first → the second plane of whole car → numbering → second of constant temperature processing → end mill external diameter → third time constant temperature processing → end → stabilization processing → brill milling pocket hole → deburring → four time constant temperature processing, whole inspection → outward appearance end is examined, packed.The present invention is used for the processing of polytetrafluoroethylene (PTFE) mixing material retainer.
Description
Technical field
The present invention relates to a kind of processing technology of polytetrafluoroethylene (PTFE) mixing material retainer, and in particular to one kind machining
Technical field.
Background technology
With the high speed development of industrial technology, requirement to bearing also more and more higher, it is embodied in：Required in structure small
Precise treatment is required in type, size, high speed is required in speed, requires the harsher operating mode such as high temperature, anticorrosion in temperature
Condition is also increasing.Hydraulic pump is the fresh product that occurs in recent years with Hybrid ceramic bearing, and this kind of bearing at least extends
3~5 times of bearing life, the maintenance-free of bearing is improved, the oil-poor in short-term or oil-free lubrication phase can be ridden out, and once moistened
Sliding to recover normal, bearing can return to normal operating conditions, thus substantially increase bearing to the adaptability of bad working environments and
Reliability, and it is wear-resistant, corrosion-resistant, it can in high precision continuously run or be stored for a long time without losing in the environment of being corrosive
Its performance etc..Therefore, this kind of bearing its limiting performance index under severe rugged environment improves a lot compared with all-steel bearing.Hydraulic pump
Material is more special used in the retainer of Hybrid ceramic bearing, and its material uses polytetrafluoroethylene (PTFE), this kind of material tool
There are excellent high- and low-temperature resistance performance and chemical stability, good self-lubricating property, but material is softer, and processing stability is poor
Easily be deformed, and the material be influenced by temperature it is larger, deformation can produce larger fluctuation, influence product quality.It is existing
The technological process for the processing polytetrafluoroethylregenerated mixing material retainer having is：Roughly grind external diameter → thin car first plane → thin car second
Plane → thin in-car footpath → end grinds the in-car footpath of external diameter → plane of the whole car first → plane of whole car second → end → car chamfering → drilling
→ fraising → deburring → whole inspection → packaging.Processing in this processing technology to pocket hole needs to bore, cuts with scissors two procedures, adds because secondary
Work, secondary positioning, pockets processing deformation being easily caused, machining accuracy is low, and the problem of do not account for temperature fluctuation, so as to shadow
Ring the quality of retainer.In addition, the high speed steel material reamer that prior art uses can not guarantee technological requirement, and blade easily produces
Raw abrasion, cutter life are difficult to ensure that.
The content of the invention
The present invention is to solve the processing technology of existing polytetrafluoroethylene (PTFE) mixing material retainer because of secondary operation, two
Secondary positioning, pockets processing deformation being easily caused, machining accuracy is low, and the problem of do not account for temperature fluctuation and influence quality,
And then provide a kind of processing technology of polytetrafluoroethylene (PTFE) mixing material retainer.
The present invention is that technical scheme is used by solving above-mentioned technical problem：
A kind of processing technology of polytetrafluoroethylene (PTFE) mixing material retainer, it comprises the following steps：
Step 1: corase grind external diameter；
Step 2: the thin plane of car first；
Step 3: the thin plane of car second；
Step 4: thin in-car footpath；
Step 5: first time constant temperature is handled, specific processing mode is：Retainer is put into the constant temperature of 15 ± 0.1 DEG C of temperature
Case constant temperature, standing time are no less than 3.5 hours, and retainer is horizontal positioned, storage；
Step 6: fine grinding external diameter；
Step 7: the whole plane of car first；
Step 8: the whole plane of car second；
Step 9: numbering；
Step 10: second of constant temperature processing, then measures outside dimension and records, and calculate and cut according to finished size
Amount, second of the constant temperature processing are identical with the mode of first time constant temperature processing；
Step 11: mill external diameter, stock removal are processed by the cutting output calculated in step 10 eventually, each amount of feeding is not more than
0.02mm, cutting output finally remaining 0.1mm when, not feed circulation tarry matter；
Step 12: third time constant temperature is handled, then measure and outside dimension and record, the third time constant temperature processing and the
The mode of constant temperature processing is identical；
Step 13: whole in-car footpath, until reaching finished product retainer internal diameter size；
Step 14: stable processing, room temperature 1 hour, retainer is horizontal positioned, storage；
Step 15: on digital controlled processing central machine tool, carry out boring milling pocket hole using band coating milling cutter；
Step 16: deburring；
Step 17: the 4th constant temperature processing, inspection eventually, the 4th constant temperature processing mode and first time constant temperature processing side
After formula is identical, also, constant temperature is placed 3.5 hours in 15 ± 0.1 DEG C of insulating boxs, size is carried out at such a temperature and is examined eventually；
Step 18: outward appearance is examined eventually, packaging.
Further, the retainer in step 15 by processing mold positioning and clamping on digital controlled processing central machine tool,
The processing mold includes outer positioning disk and interior locating dowel, and the outer positioning disk is in the form of annular discs, the lower surface processing of outer positioning disk
There is circular groove, the periphery of the circular groove and outer positioning disk is coaxially disposed, and the center of outer positioning disk is along its axis
Direction offers positioning through hole, and the interior locating dowel is "convex" shaped cylinder, and the center of interior locating dowel is along its axis side
To offering positioning spiro pit, and positioning spiro pit is coaxially disposed with positioning through hole, and the top of interior locating dowel is along its circumferencial direction
Offer annular groove, three mounting holes are offered along its axis direction in interior locating dowel, three mounting holes are along interior positioning
Post circumferencial direction is uniform, and retainer is sleeved on the top of interior locating dowel, and the upper inside wall of retainer and lower inner wall respectively with
Two open ends of annular groove are in close contact, outer positioning disc buckle on retainer, outer positioning disk and interior locating dowel by according to
The secondary screw being installed on positioning through hole and positioning spiro pit is fixedly connected.
Further, the diameter in pocket hole is less than the width of annular groove in interior locating dowel on retainer.
The present invention has the following effects that compared with prior art：
First, the present invention takes into full account the influence of processing temperature and allowance to polytetrafluoroethylene (PTFE) mixing material, and will
Internal diameter, external diameter and planar dimension are worked into after finished size carries out pockets processing again, avoids interrupted cut, make finished surface without
Chatter mark, and greatly reduce resistance to cutting；
2nd, pockets processing is changed to bore hole milling by original drilling → fraising, and retainer clamped one time machines, and is reduced
Secondary operation, secondary positioning, accurately ensure the machining accuracy in pocket hole and avoid pockets processing from deforming, reduce processing week
Phase, production efficiency improve 1.5~3 times；
3rd, because polytetrafluoroethylene (PTFE) mixing material be affected by temperature it is larger, and the present invention by insulating box by the temperature of retainer
Spend constant temperature at 15 degree, make polytetrafluoroethylene (PTFE) mixing material tissue at this temperature constant, and the mechanical property of material and add
Work stable performance, it is easy to the processing in later stage, provides effective guarantee for follow-up machining, reduce the machining deformation of material.
Brief description of the drawings
Fig. 1 is the scheme of installation of processing mold；
Fig. 2 is the main cross-sectional schematic diagram of outer positioning disk；
Fig. 3 is the main cross-sectional schematic diagram of interior locating dowel；
Fig. 4 is Fig. 3 top view.
Embodiment
Embodiment one：Illustrate present embodiment, a kind of polytetrafluoroethylene (PTFE) mixing material retainer with reference to Fig. 1~4
Processing technology, it comprises the following steps：
Step 1: corase grind external diameter；
Step 2: the thin plane of car first；
Step 3: the thin plane of car second；
Step 4: thin in-car footpath；
Step 5: first time constant temperature is handled, specific processing mode is：Retainer is put into the constant temperature of 15 ± 0.1 DEG C of temperature
Case constant temperature, standing time are no less than 3.5 hours, and retainer is horizontal positioned, storage；(retainer does not allow to stack or use when placing
Weight covers.By testing many times, find polytetrafluoroethylene (PTFE) mixing material retainer under 15 degree of temperature conditionss material
Property it is most stable, now resulting size is also most accurate.)
Step 6: fine grinding external diameter；
Step 7: the whole plane of car first；
Step 8: the whole plane of car second；
Step 9: numbering；(every retainer has a unique numbering, the variation tendency of clear each product, is easy to
The comparative analysis of data, and be advantageous to the quality tracing of product.)
Step 10: second of constant temperature processing, then measures outside dimension and records, and calculate and cut according to finished size
Amount, second of the constant temperature processing are identical with the mode of first time constant temperature processing；(computational methods of cutting output are surveyed by this step
The outside dimension of amount subtracts the size of finished product retainer external diameter, and resulting difference is required cutting output.)
Step 11: mill external diameter, stock removal are processed by the cutting output calculated in step 10 eventually, each amount of feeding is not more than
0.02mm, cutting output finally remaining 0.1mm when, not feed circulation tarry matter；
Step 12: third time constant temperature is handled, then measure and outside dimension and record, the third time constant temperature processing and the
The mode of constant temperature processing is identical；
Step 13: whole in-car footpath, until reaching finished product retainer internal diameter size；
Step 14: stable processing, room temperature 1 hour, retainer is horizontal positioned, storage；(making should caused by processing
Power discharges, and material property is reached stable machining state, lays good basis for following process, while reduce following process
Deflection.)
Step 15: on digital controlled processing central machine tool, carry out boring milling pocket hole using band coating milling cutter；(applied using band
Layer milling cutter complete to retainer pocket hole rough mill and finish-milling process, machine retainer pocket hole clamped one time, reduce
Process-cycle, avoid pockets processing from deforming, improve production efficiency.Ensure that cutter is sharp in processing, not may occur in which extruding, gnaw
Knife phenomenon.100% checks outward appearance under 10 times of magnifying glasses, is not allow for crackle, delamination.)
Step 16: deburring；
Step 17: the 4th constant temperature processing, inspection eventually, the 4th constant temperature processing mode and first time constant temperature processing side
After formula is identical, also, constant temperature is placed 3.5 hours in 15 ± 0.1 DEG C of insulating boxs, size is carried out at such a temperature and is examined eventually；(this step
The size and precision of the rapid key position of inspection eventually, such as outside dimension, outside diameter ovality and taper.)
Step 18: outward appearance is examined eventually, packaging.
First, the present invention takes into full account the influence of processing temperature and allowance to polytetrafluoroethylene (PTFE) mixing material, and will
Internal diameter, external diameter and planar dimension are worked into after finished size carries out pockets processing again, avoids interrupted cut, make finished surface without
Chatter mark, and greatly reduce resistance to cutting；
2nd, pockets processing is changed to bore hole milling by original drilling → fraising, and retainer clamped one time machines, and is reduced
Secondary operation, secondary positioning, accurately ensure the machining accuracy in pocket hole and avoid pockets processing from deforming, reduce processing week
Phase, processing a collection of retainer originally needs the process time of 3~4 days, now only needs the process-cycle of 1~2 day, saves and set
The adjustment time of standby, frock and cutter, production efficiency improves 1.5~3 times, and makes processing efficiency again using band coating milling cutter
Improve 1~2 times；
3rd, because polytetrafluoroethylene (PTFE) mixing material be affected by temperature it is larger, and the present invention by insulating box by the temperature of retainer
Spend constant temperature at 15 degree, make polytetrafluoroethylene (PTFE) mixing material tissue at this temperature constant, and the mechanical property of material and add
Work stable performance, it is easy to the processing in later stage, provides effective guarantee for follow-up machining, reduce the machining deformation of material.
Embodiment two：With reference to the explanation present embodiment of Fig. 1~4, the retainer 100 in step 15 passes through processing
For mould positioning and clamping on digital controlled processing central machine tool, the processing mold includes outer positioning disk 1 and interior locating dowel 2, described outer
Positioning disk 1 is in the form of annular discs, and the lower surface of outer positioning disk 1 is machined with circular groove 11, the circular groove 11 and outer positioning disk 1
Periphery is coaxially disposed, and the center of outer positioning disk 1 offers positioning through hole 12, the interior locating dowel 2 along its axis direction
For "convex" shaped cylinder, the center of interior locating dowel 2 offers positioning spiro pit 21, and positioning threads along its axis direction
Hole 21 is coaxially disposed with positioning through hole 12, and the top of interior locating dowel 2 offers annular groove 22, interior locating dowel along its circumferencial direction
Three mounting holes 23 are offered along its axis direction on 2, three mounting holes 23 are uniform along the interior circumferencial direction of locating dowel 2, protect
Hold the top that frame 100 is sleeved on interior locating dowel 2, and the upper inside wall of retainer 100 and lower inner wall respectively with annular groove 22
Two open ends be in close contact, the outer spiral-lock of positioning disk 1 is on retainer 100, and outer positioning disk 1 and interior locating dowel 2 are by successively
The screw 3 being installed on positioning through hole 12 and positioning spiro pit 21 is fixedly connected.It is so designed that, 100 inside and outside footpath of retainer passes through
Interior locating dowel 2 and outer positioning disk 1 position simultaneously, and are avoided the position for processing pocket hole by annular groove 22, are easy to pocket hole
Processing；Meanwhile retainer 100 is sleeved on the top of interior locating dowel 2, and the upper inside wall of retainer 100 and lower inner wall point
Two open ends not with annular groove 22 are in close contact, and are increased the contact area between retainer 100 and processing mold, are kept away
Exempt from deformation of the retainer 100 when pocket hole is processed caused by material is softer, wall thickness is thin.Processing mold passes through three mounting holes
23 are arranged on digital controlled processing central machine tool.Other compositions are identical with embodiment one with annexation.
Embodiment three：With reference to the explanation present embodiment of Fig. 1~4, the diameter in pocket hole is less than default on retainer 100
The width of annular groove 22 on the post 2 of position.It is so designed that, avoids occurring to do between cutter and annular groove inwall when processing pocket hole
Relate to.Other compositions are identical with embodiment two with annexation.
Embodiment four：Illustrate present embodiment with reference to Fig. 1~4,
Step 1: corase grind external diameter：Outside dimension is worked intoGive fine grinding external diameter allowance 0.4mm；(when apart from external diameter
During size also surplus 1mm, feed, i.e. stock removal first time 0.4mm, second of 0.3mm, third time 0.1mm are carried out in the following manner,
4th 0.1mm, the depth of cut is ground no more than 0.02mm circulations every time later.)
Step 2: the thin plane of car first：Planar dimension is worked intoTo thin car the second plane allowance 1.5mm；
Step 3: the thin plane of car second：Planar dimension is worked intoTo whole car the first plane allowance 0.5mm；
Step 4: thin in-car footpath：Internal diameter size is worked intoTo in-car footpath allowance 0.7mm eventually；
Step 5: first time constant temperature is handled, specific processing mode is：Retainer is put into the constant temperature of 15 ± 0.1 DEG C of temperature
Case constant temperature, standing time are no less than 3.5 hours, and retainer is horizontal positioned, storage；
Step 6: fine grinding external diameter：Outside dimension is worked intoGive fine grinding external diameter allowance 0.2mm；(stock removal first
Secondary 0.1mm, second of 0.1mm, grinding is circulated with the depth of cut no more than 0.05mm every time later, when cutting output also remains 0.1mm,
Not feed circulates tarry matter.)
Step 7: the whole plane of car first：Planar dimension is worked intoTo whole car the second plane allowance 0.5mm；
Step 8: the whole plane of car second：Planar dimension is worked intoThe size of finished size；
Step 9: numbering；
Step 10: second of constant temperature processing, then measures outside dimension and records, and calculate and cut according to finished size
Amount, second of the constant temperature processing are identical with the mode of first time constant temperature processing；
Step 11: external diameter is ground eventually：Outside dimension is worked intoThe size of finished size；(each amount of feeding
No more than 0.02mm, cutting output finally remaining 0.1mm when, not feed circulation tarry matter.)
Step 12: third time constant temperature is handled, then measure and outside dimension and record, the third time constant temperature processing and the
The mode of constant temperature processing is identical；
Step 13: in-car footpaths eventually：Internal diameter size is worked intoThe size of finished size；(the depth of cut
0.3mm, second of 0.2mm, third time 0.1mm, the depth of cut is not more than 0.05mm every time later.)
Step 14: stable processing, room temperature 1 hour, retainer is horizontal positioned, storage；
Step 15: on digital controlled processing central machine tool, carry out boring milling pocket hole using band coating milling cutter；
Step 16: deburring；
Step 17: the 4th constant temperature processing, inspection eventually, the 4th constant temperature processing mode and first time constant temperature processing side
After formula is identical, also, constant temperature is placed 3.5 hours in 15 ± 0.1 DEG C of insulating boxs, size is carried out at such a temperature and is examined eventually；
Step 18: outward appearance is examined eventually, packaging.
Other compositions are identical with embodiment one, two or three with annexation.
Claims (3)
- A kind of 1. processing technology of polytetrafluoroethylene (PTFE) mixing material retainer, it is characterised in that：It comprises the following steps：Step 1: corase grind external diameter；Step 2: the thin plane of car first；Step 3: the thin plane of car second；Step 4: thin in-car footpath；Step 5: first time constant temperature is handled, specific processing mode is：The insulating box that retainer is put into 15 ± 0.1 DEG C of temperature is permanent Temperature, standing time are no less than 3.5 hours, and retainer is horizontal positioned, storage；Step 6: fine grinding external diameter；Step 7: the whole plane of car first；Step 8: the whole plane of car second；Step 9: numbering；Step 10: second of constant temperature processing, then measures outside dimension and records, and calculate cutting output, institute according to finished size It is identical with the mode of first time constant temperature processing to state second of constant temperature processing；Step 11: mill external diameter, stock removal are processed by the cutting output calculated in step 10 eventually, each amount of feeding is not more than 0.02mm, cutting output finally remaining 0.1mm when, not feed circulation tarry matter；Step 12: third time constant temperature is handled, then measure outside dimension and record, the third time constant temperature processing and first time The mode of constant temperature processing is identical；Step 13: whole in-car footpath, until reaching finished product retainer internal diameter size；Step 14: stable processing, room temperature 1 hour, retainer is horizontal positioned, storage；Step 15: on digital controlled processing central machine tool, carry out boring milling pocket hole using band coating milling cutter；Step 16: deburring；Step 17: the 4th constant temperature processing, inspection eventually, the 4th constant temperature processing mode and first time constant temperature processing mode phase Together, after constant temperature is placed 3.5 hours also, in 15 ± 0.1 DEG C of insulating boxs, size is carried out at such a temperature and is examined eventually；Step 18: outward appearance is examined eventually, packaging.
- A kind of 2. processing technology of polytetrafluoroethylene (PTFE) mixing material retainer according to claim 1, it is characterised in that：Step Retainer (100) in rapid 15 by processing mold positioning and clamping on digital controlled processing central machine tool, the processing mold bag Outer positioning disk (1) and interior locating dowel (2) are included, the outer positioning disk (1) is in the form of annular discs, and the lower surface of outer positioning disk (1) is machined with Circular groove (11), the circular groove (11) and the periphery of outer positioning disk (1) are coaxially disposed, the center of outer positioning disk (1) Position offers positioning through hole (12) along its axis direction, and the interior locating dowel (2) is "convex" shaped cylinder, interior locating dowel (2) center offers positioning spiro pit (21) along its axis direction, and positioning spiro pit (21) and positioning through hole 12 are same Axle is set, and the top of interior locating dowel (2) offers annular groove (22) along its circumferencial direction, along its axis on interior locating dowel (2) Direction offers three mounting holes (23), and three mounting holes (23) are uniform along interior locating dowel (2) circumferencial direction, retainer (100) be sleeved on the top of interior locating dowel (2), and the upper inside wall of retainer (100) and lower inner wall respectively with annular groove (22) two open ends are in close contact, and outer positioning disk (1) spiral-lock is on retainer (100), outer positioning disk (1) and interior locating dowel (2) it is fixedly connected by the screw (3) being installed on successively on positioning through hole (12) and positioning spiro pit (21).
- 3. a kind of processing technology of polytetrafluoroethylene (PTFE) mixing material retainer according to claim 1 or 2, its feature exist In：The diameter in pocket hole is less than the width of annular groove (22) in interior locating dowel (2) on retainer (100).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711071989.5A CN107855734A (en) | 2017-11-03 | 2017-11-03 | A kind of processing technology of polytetrafluoroethylene (PTFE) mixing material retainer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711071989.5A CN107855734A (en) | 2017-11-03 | 2017-11-03 | A kind of processing technology of polytetrafluoroethylene (PTFE) mixing material retainer |
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| CN108032530A (en) * | 2017-10-27 | 2018-05-15 | 浙江经贸职业技术学院 | One kind spinning take-up roll processing technology |
| CN109732293A (en) * | 2019-03-27 | 2019-05-10 | 中国航发哈尔滨轴承有限公司 | A kind of thin-walled divergence type solid cage processing method |
| CN110253231A (en) * | 2019-07-19 | 2019-09-20 | 中国航发哈尔滨轴承有限公司 | A kind of processing method removing solid cage burr |
| CN110961705A (en) * | 2019-12-25 | 2020-04-07 | 中国航发哈尔滨轴承有限公司 | Milling method for square pocket of short cylindrical roller bearing retainer |
| CN110977402A (en) * | 2019-12-25 | 2020-04-10 | 中国航发哈尔滨轴承有限公司 | Splitting and pressing device for retainer locking point claw and processing method adopting device |
| CN111001991A (en) * | 2019-12-25 | 2020-04-14 | 中国航发哈尔滨轴承有限公司 | Processing method and processing tool for pocket locking claw of cylindrical roller bearing retainer |
| CN114046304A (en) * | 2021-11-25 | 2022-02-15 | 中国航发哈尔滨轴承有限公司 | Aluminum sheet and bakelite holder bonding processing tool |
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| CN110253231A (en) * | 2019-07-19 | 2019-09-20 | 中国航发哈尔滨轴承有限公司 | A kind of processing method removing solid cage burr |
| CN110253231B (en) * | 2019-07-19 | 2021-05-25 | 中国航发哈尔滨轴承有限公司 | Machining method for removing burrs of solid retainer |
| CN110961705A (en) * | 2019-12-25 | 2020-04-07 | 中国航发哈尔滨轴承有限公司 | Milling method for square pocket of short cylindrical roller bearing retainer |
| CN110977402A (en) * | 2019-12-25 | 2020-04-10 | 中国航发哈尔滨轴承有限公司 | Splitting and pressing device for retainer locking point claw and processing method adopting device |
| CN111001991A (en) * | 2019-12-25 | 2020-04-14 | 中国航发哈尔滨轴承有限公司 | Processing method and processing tool for pocket locking claw of cylindrical roller bearing retainer |
| CN114046304A (en) * | 2021-11-25 | 2022-02-15 | 中国航发哈尔滨轴承有限公司 | Aluminum sheet and bakelite holder bonding processing tool |
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