CN102699775A - Method for grinding excircles of axial hard alloy - Google Patents
Method for grinding excircles of axial hard alloy Download PDFInfo
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- CN102699775A CN102699775A CN2012102139433A CN201210213943A CN102699775A CN 102699775 A CN102699775 A CN 102699775A CN 2012102139433 A CN2012102139433 A CN 2012102139433A CN 201210213943 A CN201210213943 A CN 201210213943A CN 102699775 A CN102699775 A CN 102699775A
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Abstract
The invention discloses a method for grinding excircles of axial hard alloy.. The method comprises the steps of blanking, machining of technology extensions, binding the technology extensions on two end faces of axial hard alloy by utilizing binding materials, drilling center holes, externally grinding, removing the technology extensions and the like. According to the invention, cheap steel pieces serve as the technology extensions to replace two lengthened cone tips of hard alloy, thus the raw material cost of the hard alloy is reduced. Drilling center holes on the technology extensions of the steel pieces is much easier than grinding cone tips, and simultaneously removing the technology extensions is also much easier than cutting the lengthened cone tips of hard alloy, thus the manufacturing cost of cutter products is correspondingly reduced; and grinding temperature causing the hard alloy to crack is prevented from occurring, and cracked rejected products are avoided. Tool consumption does not include diamond grinding wheels, the production efficiency is greatly improved, and the manufacturing cost is low. Drilling of center holes is easy, and the method for grinding excircles of axial hard alloy can be applied to grinding of all excircles of axial hard alloy cutters without any limitation. The technology is simple, and the operation is convenient.
Description
Technical field
The present invention relates to a kind of machine-tooled method of sintered carbide tool bit, specifically be meant the method for a kind of series hard alloy Cylindrical Grinding Processes.
Background technology
Carbide alloy is as the main raw material(s) of cutter, and the machining tool that its Cylindrical Grinding Processes adopts usually has: centerless grinder and cylindrical grinder.In the cutter manufacturing industry; There is a lot of hard alloy cutter products to be difficult in grinding cylindrical in the centerless grinder; Such as stepped cutter, the cutter that tapering is arranged, special profile cutter etc., and the grinding of nearly all axle type cutter cylindrical can be accomplished with cylindrical grinder.In cylindrical grinder, axle type plain steel Cylindrical Grinding Processes adopts the centre bore at steel part two ends to carry out clamping as machining benchmark and clamping position usually.But carbide alloy is different; Because Hardmetal materials hardness is far above the hardness of plain steel; The drilling centre bore not possibly realized on end face; Only if adopt the spark-erosion perforating machine punching, thus the centre bore that does not adopt the alloy two ends during Cylindrical Grinding Processes basically as machining benchmark with clamp the position and carry out clamping.In cylindrical grinder, the clamping method of common hard alloy cutter product Cylindrical Grinding Processes has following three kinds:
First kind: grind the method for the sharp clamping of awl at the carbide alloy two ends, as shown in Figure 1, carbide alloy need extend two and bore the length of point, because the carbide alloy prices of raw and semifnished materials far above the price of plain steel, therefore can increase the cost of raw material greatly; After utilizing clamping spare will bore sharp clamping and accomplishing cylindricalo grinding, the awl point of lengthening needs excision, and therefore the difficulty of its excision can increase the manufacturing cost of product greatly much larger than the cut-out of plain steel; The grinding difficulty of awl point is big, is difficult for very much rounding, produces oval phenomenon, is easy to generate grinding crack simultaneously, causes the raising of product percent defective; Can only be by diamond wheel grinding, and abrasion of grinding wheel is very fast, and the instrument consumption costs is big;
Second kind: utilize the clamping method of spark-erosion perforating machine at the carbide alloy punching two ends, as shown in Figure 2, because spark machined speed is slow, production efficiency is low, and manufacturing cost is high; The hole that spark-erosion perforating machine is got is a straight hole; The aperture does not have chamfering, could and utilize top clamping as machining benchmark after need grinding out the aperture chamfering, and it is big to grind aperture chamfering difficulty; Abrasive power is light; Increase milling time greatly, abrasive power has weighed, and the aperture collapses open-minded easily and can not be used in machining benchmark; Most hard alloy cutter product can not leave centre bore because of cutter tooth end face band center cutter tooth, therefore can not adopt spark-erosion perforating machine to punch above that;
The third: the method with the collet clamping, receive significant limitation, often do not adopt.At first need on the carbide alloy cylindrical, grind the clamping benchmark, with all the other milled portion cylindricals not of grinding again after the collet clamping.If with centreless grinding grinding and clamping benchmark, the whole cylindrical of carbide alloy utilizes the through feed grinding method all to accomplish, and there is no need earlier with centreless grinding grinding and clamping benchmark, again with mill another part cylindrical behind the collet clamping; If adopted above-mentioned method illustrated in figures 1 and 2, can accomplish the grinding of all cylindricals, also there is no need to use again the grinding of collet clamping; Usually in hard alloy cutter is made,, need regrind and cut the empty cutter of neck, grinding step cylindrical or circular cone etc., can use the clamping method of collet if with behind the centreless grinding through feed grinding method grinding cylindrical; Simultaneously, there is tangible clamping error in the collet clamping, be difficult to guarantee by grinding face and clamping benchmark higher axiality is arranged, so the method can only be used for the low speed ordinary cutting tool.
Summary of the invention
The object of the present invention is to provide the method for a kind of series hard alloy Cylindrical Grinding Processes, overcome the defective of above-mentioned several kinds of cylindricalo grinding installation way, reach save material cost and manufacturing cost, the purpose of the rate of reducing the number of rejects and seconds.
The object of the invention is realized through following technical proposals:
The method of a kind of series hard alloy Cylindrical Grinding Processes may further comprise the steps:
(A) blanking: according to the entire length blanking of required axle series hard alloy;
(B) processing of technology extension element:, process the technology extension element with steel part turning according to the diameter specifications of axle series hard alloy;
(C) the technology extension element that utilizes adhesives that step (B) is obtained is bonded in two end faces of axle series hard alloy that step (A) obtains;
(D) drill centers: drill centers on the technology extension element after bonding, this centre bore is on the central axis of axle series hard alloy;
(E) outer mill: the centre bore that obtains with step (D) processing is a benchmark, with the top centre bore of putting into, with grinding machine carbide alloy is carried out cylindricalo grinding;
(F) remove the technology extension element: the technology extension element local heat after the grinding to foreign round, the technology extension element is removed in adhesives intensification after-tack.
The axle series hard alloy according to required length integral cutting, is guaranteed can satisfy after it is processed the length of workpiece, confirm the technology extension element of suitable size simultaneously according to the size of carbide alloy; Extension element adopts common iron to get final product, and extension element is bonding firmly at the two ends of carbide alloy, as much as possible; Make extension element and carbide alloy coaxial,, and make centre bore be positioned on the central axis extended line of carbide alloy then at two end face drill centers of extension element; With the centre bore be benchmark be enclosed within two top on, in the top effect of holding down, utilize grinding machine to get final product the processing rigid alloy; After processing; To technology extension element local heat, adhesives is in the intensification after-tack, and causes the technology extension element to come off.Method of the present invention is compared with the method that grinds the sharp clamping of awl at the carbide alloy two ends, need not to grind at the carbide alloy two ends awl point, has substituted two awl points of carbide alloy lengthening by the steel part of cheapness as the technology lengthening, has reduced the carbide alloy cost of raw material; The drilling centre bore is more much easier than grinding awl point on the technology extension element of steel part, and the removal of technology extension element simultaneously is also much easier than the awl point of excision carbide alloy lengthening, so the corresponding reduction of the manufacturing cost of Tool Products; Centre bore is bored, ground in the bonding back of technology extension element only above that, can on carbide alloy, not produce the grinding temperature that causes its crackle, stopped the generation of crackle waste product; Simultaneously, instrument consumption does not have skive, has only cheap centre drill and bonded adhesives, the corresponding reduction of its expense; Method of the present invention is compared at the clamping method of carbide alloy punching two ends with utilizing spark-erosion perforating machine, and production efficiency improves greatly, low cost of manufacture; The drilling of centre bore is easy, can be used for all axle series hard alloy cutter Cylindrical Grinding Processes, not limitation; Method of the present invention with compare with the method for collet clamping, technology is simple, and is easy to operate, need not to grind in advance the clamping benchmark of collet, can be used for all axle series hard alloy cutter Cylindrical Grinding Processes, also limitation not; Higher than collet installation way precision, the cylindrical machining accuracy is high, and coaxiality error is little, except that being used for the low speed ordinary cutting tool, can be used for the Cylindrical Grinding Processes of HSC Milling Tools fully.
Also carry out following steps before carrying out step (C): the end face of bonding carbide alloy end face of needs and technology extension element is carried out blast handle, remove the dirt of bonding plane, increase the roughness of bonding plane.Further say, in order to improve bonding quality, the problem of avoiding the bonding quality difference band; Can carry out blast to the end face of bonding carbide alloy end face of needs and technology extension element handles; Remove the dirt of bonding plane, increase the roughness of bonding plane, guarantee the cleaning of two bonding planes; Not again very smooth, help increasing bonding force.
Also carry out following steps before carrying out step (D):, be not less than hardening time 8 hours with the workpiece spontaneous curing after bonding.Say that further as committed step of the present invention, the adhesives between technology extension element and the carbide alloy needs to solidify, usually, should be no less than 8 hours its hardening time.
Also carry out following steps afterwards in step (D): grind centre bore, utilize and grind top attrition process of in lathe, carrying out centre bore.Say that further centre bore grinds the back precision and improves, its positioning accuracy is higher than the sharp positioning accuracy of awl, the corresponding raising of cutter cylindrical precision during cylindricalo grinding; Only bore above that the bonding back of extension element, center lapping, can on carbide alloy, not produce the grinding temperature that causes its crackle, has stopped the generation of crackle waste product.
Adhesives in the said step (C) is a TS811 high-strength structure AB glue.This adhesives can easily be bought from market and obtain, and its technique for sticking is pressed the adhesives operation instructions and carried out.
Heating-up temperature in the said step (F) is 180 C ~ 200 C.
The present invention compared with prior art has following advantage and beneficial effect:
The method of a kind of series hard alloy Cylindrical Grinding Processes of 1 the present invention; Method of the present invention is compared with the method that grinds the sharp clamping of awl at the carbide alloy two ends; Need not to grind the awl point at the carbide alloy two ends; Steel part by cheapness is sharp as two awls that the technology lengthening has substituted the carbide alloy lengthening, has reduced the carbide alloy cost of raw material; The drilling centre bore is more much easier than grinding awl point on the technology extension element of steel part, and the removal of technology extension element simultaneously is also much easier than the awl point of excision carbide alloy lengthening, so the corresponding reduction of the manufacturing cost of Tool Products; Centre bore is bored, ground in the bonding back of technology extension element only above that, can on carbide alloy, not produce the grinding temperature that causes its crackle, stopped the generation of crackle waste product; Simultaneously, instrument consumption does not have skive, has only cheap centre drill and bonded adhesives, the corresponding reduction of its expense; Method of the present invention is compared at the clamping method of carbide alloy punching two ends with utilizing spark-erosion perforating machine, and production efficiency improves greatly, low cost of manufacture; The drilling of centre bore is easy, can be used for all axle series hard alloy cutter Cylindrical Grinding Processes, not limitation; Method of the present invention with compare with the method for collet clamping, technology is simple, and is easy to operate, need not to grind in advance the clamping benchmark of collet, can be used for all axle series hard alloy cutter Cylindrical Grinding Processes, also limitation not; Higher than collet installation way precision, the cylindrical machining accuracy is high, and coaxiality error is little, except that being used for the low speed ordinary cutting tool, can be used for the Cylindrical Grinding Processes of HSC Milling Tools fully;
The method of a kind of series hard alloy Cylindrical Grinding Processes of 2 the present invention; The end face of bonding carbide alloy end face of needs and technology extension element is carried out blast to be handled; Remove the dirt of bonding plane, increase the roughness of bonding plane, guarantee the cleaning of two bonding planes; Not again very smooth, help increasing bonding force;
The method of a kind of series hard alloy Cylindrical Grinding Processes of 3 the present invention, centre bore are ground the back precision and are improved, and its positioning accuracy is higher than the sharp positioning accuracy of awl, the corresponding raising of cutter cylindrical precision during cylindricalo grinding; Only bore above that the bonding back of extension element, center lapping, can on carbide alloy, not produce the grinding temperature that causes its crackle, has stopped the generation of crackle waste product.
Description of drawings
Fig. 1 grinds the sharp clamping sketch map of awl for having now at the carbide alloy two ends;
Fig. 2 is the existing clamping sketch map of spark-erosion perforating machine at the carbide alloy punching two ends that utilize;
Fig. 3 is existing sketch map with the collet clamping;
Fig. 4 clamps structural representation for the present invention.
Mark and corresponding parts title in the accompanying drawing:
1-carbide alloy, 2-are bored point, 3-clamping spare, and the 4-centre bore, 5-is top, 6-collet, 7-technology extension element.
The specific embodiment
Below in conjunction with embodiment the present invention is done further detailed description, but embodiment of the present invention is not limited thereto.
Embodiment
As shown in Figure 4, the method for a kind of series hard alloy Cylindrical Grinding Processes of the present invention is an example with an axle series hard alloy Cylindrical Grinding Processes of processing Φ 16X109mm specifications and models:
(A) blanking: with the carbide alloy is raw material, and its woollen specification is Φ 16.4X330mm, is 0.8mm according to the length overall grinding allowance, and the line cutting scissors is cut into the blank of Φ 16.4X109.8mm specification;
(B) processing of technology extension element: with the 45# steel is technology extension element raw material, and its woollen specification is Φ 14X1000mm, and turning processes the cylindrical technology extension element of Φ 14X8mm specification;
The end face of bonding carbide alloy end face of needs and technology extension element is carried out blast handle, select the 0.5mm sand grains, compressed air pressure 6.5Bar to remove the dirt of bonding plane, increases the roughness of bonding plane.
(C) utilize adhesives that the technology extension element is bonded in two end faces of a series hard alloy; Adhesives is a TS811 high-strength structure AB glue, and technique for sticking is pressed the adhesives specification and carried out.
With the workpiece spontaneous curing after bonding 12 hours.If alternative adhesives is arranged, press operation instructions its hardening time and carry out.
(D) drill centers: utilize drill centers on the technology extension element of lathe after bonding, the centre bore specification is pressed A2/4.25, during boring with the carbide alloy cylindrical as the clamping benchmark, to guarantee that centre bore is on the central axis of axle series hard alloy;
Grind centre bore, utilize and grind top attrition process of in lathe, carrying out centre bore.
(E) outer mill: the centre bore that obtains with step (D) processing is a benchmark, with the top centre bore of putting into, with grinding machine carbide alloy is carried out cylindricalo grinding, guarantees that the carbide alloy outside diameter is Φ 16mm;
(F) remove extension element: utilize the technology extension element local heat after the High-frequency machine grinding to foreign round, it is softening that adhesives is heated up, and the technology extension element comes off.
The above only is preferred embodiment of the present invention, is not the present invention is done any pro forma restriction, to any simple modification, equivalent variations that above embodiment did, all falls within protection scope of the present invention on every foundation technical spirit of the present invention.
Claims (6)
1. the method for an axle series hard alloy Cylindrical Grinding Processes is characterized in that, may further comprise the steps:
(A) blanking: according to the entire length blanking of required axle series hard alloy;
(B) processing of technology extension element:, process the technology extension element with steel part turning according to the diameter specifications of axle series hard alloy;
(C) the technology extension element that utilizes adhesives that step (B) is obtained is bonded in two end faces of axle series hard alloy that step (A) obtains;
(D) drill centers: drill centers on the technology extension element after bonding, this centre bore is on the central axis of axle series hard alloy;
(E) outer mill: the centre bore that obtains with step (D) processing is a benchmark, with the top centre bore of putting into, with grinding machine carbide alloy is carried out cylindricalo grinding;
(F) remove the technology extension element: the technology extension element local heat after the grinding to foreign round, the technology extension element is removed in adhesives intensification after-tack.
2. the method for a kind of series hard alloy Cylindrical Grinding Processes according to claim 1; It is characterized in that; Also carry out following steps before carrying out step (C): the end face of bonding carbide alloy end face of needs and technology extension element is carried out blast handle; Remove the dirt of bonding plane, increase the roughness of bonding plane.
3. the method for a kind of series hard alloy Cylindrical Grinding Processes according to claim 1 is characterized in that, also carries out following steps before carrying out step (D):, be not less than hardening time 8 hours the workpiece spontaneous curing after bonding.
4. the method for a kind of series hard alloy Cylindrical Grinding Processes according to claim 1 is characterized in that, also carries out following steps afterwards in step (D): utilize and grind top attrition process of in lathe, carrying out centre bore.
5. according to the method for any described a kind of series hard alloy Cylindrical Grinding Processes in the claim 1 to 4, it is characterized in that: the adhesives in the said step (C) is a TS811 high-strength structure AB glue.
6. the method for a kind of series hard alloy Cylindrical Grinding Processes according to claim 5 is characterized in that: the heating-up temperature in the said step (F) is 180 C ~ 200 C.
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| CN2012102139433A CN102699775A (en) | 2012-06-27 | 2012-06-27 | Method for grinding excircles of axial hard alloy |
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| CN2012102139433A CN102699775A (en) | 2012-06-27 | 2012-06-27 | Method for grinding excircles of axial hard alloy |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103231308A (en) * | 2013-03-29 | 2013-08-07 | 浙江恒成硬质合金有限公司 | Flat-top piece |
| CN104057367A (en) * | 2014-06-19 | 2014-09-24 | 哈尔滨东安发动机（集团）有限公司 | Processing method for high-precision cylindricity |
| CN104057247A (en) * | 2014-05-30 | 2014-09-24 | 太仓美晶机械制造有限公司 | Manufacturing method for precise valve element of hydraulic servo valve |
| CN104985402A (en) * | 2015-07-22 | 2015-10-21 | 泉州佰源机械科技股份有限公司 | Method for machining triangle of seamless underwear machine |
| CN105033783A (en) * | 2015-08-10 | 2015-11-11 | 成都亨通兆业精密机械有限公司 | Grinding method for cemented carbide replacement workpiece |
| CN107088738A (en) * | 2017-04-18 | 2017-08-25 | 资阳中车传动有限公司 | A kind of axis products surface accurate curved-surface processing method |
| CN107671718A (en) * | 2017-09-22 | 2018-02-09 | 哈尔滨汽轮机厂有限责任公司 | A kind of special power transmission shaft of taper pin reconditioning and its method for grinding |
| CN108818305A (en) * | 2017-05-04 | 2018-11-16 | 中天科技精密材料有限公司 | Quartz pushrod clamp structure and clamp method, dress stick platform |
| CN109732290A (en) * | 2019-02-27 | 2019-05-10 | 衢州飞瑞特种陶瓷有限公司 | Axial workpiece pre-stressed machining method and device |
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Cited By (12)
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| CN103231308A (en) * | 2013-03-29 | 2013-08-07 | 浙江恒成硬质合金有限公司 | Flat-top piece |
| CN103231308B (en) * | 2013-03-29 | 2016-02-10 | 浙江恒成硬质合金有限公司 | Flat-top part |
| CN104057247A (en) * | 2014-05-30 | 2014-09-24 | 太仓美晶机械制造有限公司 | Manufacturing method for precise valve element of hydraulic servo valve |
| CN104057367A (en) * | 2014-06-19 | 2014-09-24 | 哈尔滨东安发动机（集团）有限公司 | Processing method for high-precision cylindricity |
| CN104985402A (en) * | 2015-07-22 | 2015-10-21 | 泉州佰源机械科技股份有限公司 | Method for machining triangle of seamless underwear machine |
| CN104985402B (en) * | 2015-07-22 | 2017-09-19 | 泉州佰源机械科技股份有限公司 | A kind of processing method of seamless underwear machine triangle |
| CN105033783A (en) * | 2015-08-10 | 2015-11-11 | 成都亨通兆业精密机械有限公司 | Grinding method for cemented carbide replacement workpiece |
| CN107088738A (en) * | 2017-04-18 | 2017-08-25 | 资阳中车传动有限公司 | A kind of axis products surface accurate curved-surface processing method |
| CN107088738B (en) * | 2017-04-18 | 2020-12-29 | 资阳中工机车传动有限公司 | Method for machining precise curved surface on surface of shaft product |
| CN108818305A (en) * | 2017-05-04 | 2018-11-16 | 中天科技精密材料有限公司 | Quartz pushrod clamp structure and clamp method, dress stick platform |
| CN107671718A (en) * | 2017-09-22 | 2018-02-09 | 哈尔滨汽轮机厂有限责任公司 | A kind of special power transmission shaft of taper pin reconditioning and its method for grinding |
| CN109732290A (en) * | 2019-02-27 | 2019-05-10 | 衢州飞瑞特种陶瓷有限公司 | Axial workpiece pre-stressed machining method and device |
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Application publication date: 20121003 |