CN104259756A - Reciprocating cutter bar mower cam machining process - Google Patents
Reciprocating cutter bar mower cam machining process Download PDFInfo
- Publication number
- CN104259756A CN104259756A CN201410399625.XA CN201410399625A CN104259756A CN 104259756 A CN104259756 A CN 104259756A CN 201410399625 A CN201410399625 A CN 201410399625A CN 104259756 A CN104259756 A CN 104259756A
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- Prior art keywords
- cam
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- specially
- sickle
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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
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D69/00—Driving mechanisms or parts thereof for harvesters or mowers
Abstract
The invention relates to a reciprocating cutter bar mower cam machining process and belongs to the technical field of garden equipment machining. The process includes the steps of (1) blanking and heat treatment, (2) end face milling, (3) rough and finish milling, (4) quenching, (5) grinding, (6) hole drilling and boring, (7) finish turning, (8) flaw detection and (9) cleaning. By the reciprocating cutter bar mower cam machining process, the problem of low cam machining precision is solved by heat treatment and grinding of cams, and service life of a reciprocating cutter bar mower is prolonged.
Description
Technical field
The present invention relates to garden equipment processing technique field, particularly one is applied to sickle-bar mower cam cutting technique.
Background technology
Along with improving constantly of expanding economy and people's living standard, gardens industry have also been obtained development at full speed, and turf machinery also obtains thereupon and develops faster.And hay mover is a kind of conventional machinery indispensable in the industry of gardens.What present mowing efficiency comparison was high is sickle-bar mower, and its operation principle is, by eccentric wheel, the converting rotary motion of motor is become swinging of blade, or swing, thus to the instrument that object is sheared.
In order to utilize sickle-bar mower effectively to mow, below its demand fulfillment some: cut stubble neat, do not leak and cut, stifled cutter, power consumption is little.Therefore in order to meet job requirement, the manufacture of the vital part cam of sickle-bar mower seems particularly important.The cam cutting precision of a lot of plant produced is not high especially at present, cannot ensure that hay mover accurately and for a long time runs better.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of sickle-bar mower cam cutting technique.Not high for solving cam cutting precision, extend the problem in sickle-bar mower service life.
For achieving the above object, the invention provides following technical scheme: a kind of sickle-bar mower cam cutting technique, its processing step is as follows:
(1) blanking heat treatment: material selection GCr15, adopt annealing in process, temperature controls at 790 DEG C ~ 810 DEG C, and temperature retention time is 1 ~ 2h;
(2) end face milling: milling cam two end faces centering;
(3) thick finish-milling: thick finish-milling cam excircle configuration;
(4) quench: temperature controls at 830 DEG C ~ 850 DEG C, after insulation, oil cooling is to normal temperature;
(5) grinding: grinding cam two end faces, fine grinding cam excircle configuration, fine cylindrical profile spindle speed controls at 0.250 ~ 0.330m/s, and speed of grinding wheel controls at 40 ~ 45m/s, and the amount of feeding controls at 0.010 ~ 0.020mm/r;
(6) bore hole is bored: bore boring cam hole;
(7) finish turning: finish turning endoporus is to processing request;
(8) detect a flaw;
Preferably, to blank blanking and heat treatment in described step (1), blank material selects GCr15, and adopt annealing in process, temperature controls at 790 DEG C ~ 810 DEG C, and be specially 800 DEG C, temperature retention time is 1 ~ 2h, is specially 1.5h.
Preferably, the quenching to cam in described step (4), temperature controls, at 830 DEG C ~ 850 DEG C, to be specially 840 DEG C, and after insulation 2h, oil cooling is to normal temperature.
Preferably, the grinding to cam in described step (5), grinding cam two end faces, fine grinding cam excircle configuration, fine cylindrical profile spindle speed controls, at 0.250 ~ 0.330m/s, to be specially 0.300m/s; Speed of grinding wheel controls, at 40 ~ 48m/s, to be specially 45m/s; The amount of feeding controls, at 0.010 ~ 0.020mm/r, to be specially 0.015mm/r.
Adopt the beneficial effect of above technical scheme to be: a kind of sickle-bar mower cam cutting of the present invention technique, comprise blanking and heat treatment → end face milling → thick finish-milling → quenching → grinding → brill bore hole → finish turning → flaw detection → cleaning.To blank blanking and heat treatment process operation in the step (1) that the present invention mentions, blank material selects GCr15, and its cost is low and high-quality grade of steel is not high, has the features such as good metal strength, plasticity and toughness; Adopt annealing in process, temperature controls at 790 DEG C ~ 810 DEG C, and be specially 800 DEG C, temperature retention time is 1 ~ 2h, is specially 1.5h, and through inspection, the hardness of workpiece is 28HRC, is convenient to follow-up machining.The present invention mentions the quenching to cam in step (4), and temperature controls, at 830 DEG C ~ 850 DEG C, to be specially 840 DEG C, and after insulation 2h, oil cooling is to normal temperature; This operation makes Cr element dissolve, and improves quenching degree, improves temper resistance, be conducive to austenitic formation, thus improves intensity and the hardness of material.Grinding to cam in the step (5) that the present invention mentions, grinding cam two end faces, fine grinding cam excircle configuration, fine cylindrical profile spindle speed controls, at 0.250 ~ 0.330m/s, to be specially 0.300m/s; Speed of grinding wheel controls, at 40 ~ 48m/s, to be specially 45m/s; The amount of feeding controls, at 0.010 ~ 0.020mm/r, to be specially 0.015mm/r.This operation, by the concrete control to fine grinding parameter, can improve the precision of cam excircle configuration, and through inspection, cam excircle configuration roughness can reach 0.002mm, meets instructions for use.It is not high that this technique solves cam cutting precision, extends the problem in sickle-bar mower service life.
Detailed description of the invention
The invention provides a kind of detailed description of the invention of sickle-bar mower cam cutting technique:
A kind of sickle-bar mower cam cutting technique, its processing step is as follows:
(1) blanking heat treatment: blank material selects GCr15, adopt annealing in process, temperature controls at 790 DEG C ~ 810 DEG C, and be specially 800 DEG C, temperature retention time is 1 ~ 2h, is specially 1.5h.
(2) end face milling: milling cam two end faces centering.
(3) thick finish-milling: thick finish-milling cam excircle configuration.
(4) quench: temperature controls, at 830 DEG C ~ 850 DEG C, to be specially 840 DEG C, after insulation 2h, oil cooling is to normal temperature.
(5) grinding: grinding cam two end faces, fine grinding cam excircle configuration, fine cylindrical profile spindle speed controls, at 0.250 ~ 0.330m/s, to be specially 0.300m/s; Speed of grinding wheel controls, at 40 ~ 48m/s, to be specially 45m/s; The amount of feeding controls, at 0.010 ~ 0.020mm/r, to be specially 0.015mm/r.
(6) bore hole is bored: bore boring cam hole.
(7) finish turning: finish turning endoporus is to processing request.
(8) detect a flaw
(9) clean
Adopt the beneficial effect of above technical scheme to be: a kind of sickle-bar mower cam cutting of the present invention technique, comprise blanking and heat treatment → end face milling → thick finish-milling → quenching → grinding → brill bore hole → finish turning → flaw detection → cleaning.To blank blanking and heat treatment process operation in the step (1) that the present invention mentions, blank material selects GCr15, and its cost is low and high-quality grade of steel is not high, has the features such as good metal strength, plasticity and toughness; Adopt annealing in process, temperature controls at 790 DEG C ~ 810 DEG C, and be specially 800 DEG C, temperature retention time is 1 ~ 2h, is specially 1.5h, and through inspection, the hardness of workpiece is 28HRC, is convenient to follow-up machining.The present invention mentions the quenching to cam in step (4), and temperature controls, at 830 DEG C ~ 850 DEG C, to be specially 840 DEG C, and after insulation 2h, oil cooling is to normal temperature; This operation makes Cr element dissolve, and improves quenching degree, improves temper resistance, be conducive to austenitic formation, thus improves intensity and the hardness of material.Grinding to cam in the step (5) that the present invention mentions, grinding cam two end faces, fine grinding cam excircle configuration, fine cylindrical profile spindle speed controls, at 0.250 ~ 0.330m/s, to be specially 0.300m/s; Speed of grinding wheel controls, at 40 ~ 48m/s, to be specially 45m/s; The amount of feeding controls, at 0.010 ~ 0.020mm/r, to be specially 0.015mm/r.This operation, by the concrete control to fine grinding parameter, can improve the precision of cam excircle configuration, and through inspection, cam excircle configuration roughness can reach 0.002mm, meets instructions for use.
The invention provides a kind of sickle-bar mower cam cutting technique.This technique is not high by solving cam cutting precision to the heat treatment of cam and grinding, extends the problem in sickle-bar mower service life.
The foregoing is only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (4)
1. a sickle-bar mower cam cutting technique, its processing step is as follows:
Blanking heat treatment: material selection GCr15, adopt annealing in process, temperature controls at 790 DEG C ~ 810 DEG C, and temperature retention time is 1 ~ 2h;
End face milling: milling cam two end faces centering;
Thick finish-milling: thick finish-milling cam excircle configuration;
Quenching: temperature controls at 830 DEG C ~ 850 DEG C, after insulation, oil cooling is to normal temperature;
Grinding: grinding cam two end faces, fine grinding cam excircle configuration, fine cylindrical profile spindle speed controls at 0.250 ~ 0.330m/s, and speed of grinding wheel controls at 40 ~ 45m/s, and the amount of feeding controls at 0.010 ~ 0.020mm/r;
Bore bore hole: bore boring cam hole;
Finish turning: finish turning endoporus is to processing request;
Flaw detection;
Cleaning.
2. a kind of sickle-bar mower cam cutting technique according to claim 1, it is characterized in that, to blank blanking and heat treatment in described step (1), blank material selects GCr15, adopt annealing in process, temperature controls, at 790 DEG C ~ 810 DEG C, to be specially 800 DEG C, temperature retention time is 1 ~ 2h, is specially 1.5h.
3. a kind of sickle-bar mower cam cutting technique according to claim 1, is characterized in that, the quenching to cam in described step (4), and temperature controls, at 830 DEG C ~ 850 DEG C, to be specially 840 DEG C, and after insulation 2h, oil cooling is to normal temperature.
4. a kind of sickle-bar mower cam cutting technique according to claim 1, it is characterized in that, grinding to cam in described step (5), grinding cam two end faces, fine grinding cam excircle configuration, fine cylindrical profile spindle speed controls, at 0.250 ~ 0.330m/s, to be specially 0.300m/s; Speed of grinding wheel controls, at 40 ~ 48m/s, to be specially 45m/s; The amount of feeding controls, at 0.010 ~ 0.020mm/r, to be specially 0.015mm/r.
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Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410399625.XA CN104259756A (en) | 2014-08-15 | 2014-08-15 | Reciprocating cutter bar mower cam machining process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410399625.XA CN104259756A (en) | 2014-08-15 | 2014-08-15 | Reciprocating cutter bar mower cam machining process |
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| CN104259756A true CN104259756A (en) | 2015-01-07 |
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| CN201410399625.XA Pending CN104259756A (en) | 2014-08-15 | 2014-08-15 | Reciprocating cutter bar mower cam machining process |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106736321A (en) * | 2016-12-31 | 2017-05-31 | 重庆市搏润模具有限公司 | A kind of 20Cr cam cuttings technique |
| CN108838630A (en) * | 2018-08-11 | 2018-11-20 | 三门县职业中等专业学校 | A kind of globoid cam processing technology |
| CN109483186A (en) * | 2018-12-24 | 2019-03-19 | 王明川 | A kind of processing technology improving plane dish-type cam cutting precision and efficiency |
| CN109837377A (en) * | 2017-11-29 | 2019-06-04 | 江苏科技大学 | The method for preventing cam of camshaft delayed crack |
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| US20030164210A1 (en) * | 2000-07-12 | 2003-09-04 | Wilfried Forster | Method for producing metallic, non-rotationally symmetrical rings with a constant wall thickness over their circumference |
| CN102756243A (en) * | 2012-07-05 | 2012-10-31 | 无锡市钻通工程机械有限公司 | Secondary finish machining process for cam shaft adopting Al-Sn-Mn-Mg-Zn series aluminum alloy as material |
| CN102962650A (en) * | 2012-12-16 | 2013-03-13 | 重庆望江工业有限公司 | Method for manufacturing prismatic profiling facing cam |
| CN103433709A (en) * | 2013-08-28 | 2013-12-11 | 宁波富莱茵汽车部件有限公司 | Processing technology of camshaft |
-
2014
- 2014-08-15 CN CN201410399625.XA patent/CN104259756A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030164210A1 (en) * | 2000-07-12 | 2003-09-04 | Wilfried Forster | Method for producing metallic, non-rotationally symmetrical rings with a constant wall thickness over their circumference |
| CN102756243A (en) * | 2012-07-05 | 2012-10-31 | 无锡市钻通工程机械有限公司 | Secondary finish machining process for cam shaft adopting Al-Sn-Mn-Mg-Zn series aluminum alloy as material |
| CN102962650A (en) * | 2012-12-16 | 2013-03-13 | 重庆望江工业有限公司 | Method for manufacturing prismatic profiling facing cam |
| CN103433709A (en) * | 2013-08-28 | 2013-12-11 | 宁波富莱茵汽车部件有限公司 | Processing technology of camshaft |
Non-Patent Citations (1)
| Title |
|---|
| 黄景飞: "基于反求法织机凸轮开口机构分析与凸轮制造工艺研究", 《工程科技Ⅰ辑》, no. 05, 15 May 2006 (2006-05-15) * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106736321A (en) * | 2016-12-31 | 2017-05-31 | 重庆市搏润模具有限公司 | A kind of 20Cr cam cuttings technique |
| CN109837377A (en) * | 2017-11-29 | 2019-06-04 | 江苏科技大学 | The method for preventing cam of camshaft delayed crack |
| CN108838630A (en) * | 2018-08-11 | 2018-11-20 | 三门县职业中等专业学校 | A kind of globoid cam processing technology |
| CN109483186A (en) * | 2018-12-24 | 2019-03-19 | 王明川 | A kind of processing technology improving plane dish-type cam cutting precision and efficiency |
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Application publication date: 20150107 |