CN104646973A - Processing method of multi-thread worm - Google Patents
Processing method of multi-thread worm Download PDFInfo
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- CN104646973A CN104646973A CN201410756013.1A CN201410756013A CN104646973A CN 104646973 A CN104646973 A CN 104646973A CN 201410756013 A CN201410756013 A CN 201410756013A CN 104646973 A CN104646973 A CN 104646973A
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- worm
- article
- helicla flute
- finish turning
- tool
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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
- B23P15/14—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass gear parts, e.g. gear wheels
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- Mechanical Engineering (AREA)
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Abstract
The invention discloses a processing method of a multi-thread worm, and relates to the field of machining. The processing method comprises the following steps of forging a blank by a 45# steel; clamping a work-piece by a three jaw chuck on a CA6140 machine tool, and carrying out rough turning on the ex-circle of the blank; carrying out heat treatment and thermal refining; clamping the three jaw chuck on the CA6140 machine tool, turning one end plane to form a center hole, and then turning around to turn another end plane to the total length to form a center hole; clamping the work-piece by two centers, hermetically and finely turning all ex-circles, and leaving 0.5mm finish turning allowance; finely turning the threaded ex-circles and lengths, and chamfering to the size required by a drawing; selecting a roughing tool for the worm, wherein a tool nose is 1.6-1.7mm wide, a nose angle is 39-40 degrees and a tool cutting edge inclination is 20-25 degrees; and selecting a finishing tool for the worm, wherein the blade is 1.8mm wide, the nose angle is 40 degrees, and the tool cutting edge inclination is 0-4 degrees. The processing method provided by the invention is simple in process, the processing quality of the work-piece can be ensured, the processing difficulty and production cost can be reduced, and the production efficiency can be improved.
Description
Technical field
The present invention relates to field of machining, be specifically related to the processing method of multistart worm.
Background technology
The turnery processing of multistart worm occupies very important position in mechanical manufacturing field.On lathe, turning multistart worm is one of processing method conventional at present.The profile of tooth of worm screw is very similar to trapezoidal thread, and tooth comparision is large, but due to the tooth depth of worm screw deep. the area of cut is large, is difficult to hold when cutting; If the parted hair of each helix of multistart worm also compares order difficulty. error is large, and the multiple thread pitch that will make institute's car not etc., does not reduce screw rod service life.
Multistart worm is divided into the wide worm screw of axial direct and straight sided normal worm ZN-worm two kinds, and the former profile of tooth is straight line in axial plane. and be curve in normal plane. the profile of tooth of the latter is just in time contrary with the former.Multistart worm has special technical requirement. worm thread axial pitch deviation must be limited in process. and axial accumulated error. worm tooth shape error within tolerance, otherwise should will affect the transmission accuracy of worm gear.The screw thread flank of tooth of worm screw is coarse. will wearability and the service life of working surface be affected.
Summary of the invention
In order to solve the problem, the invention provides a kind of process simple, the crudy of workpiece can be ensured, reduce difficulty of processing and production cost, the processing method of the multistart worm of enhancing productivity.
The processing method of multistart worm of the present invention, comprises the following steps:
The first step, rough forging material, adopts No. 45 steel rough forgings;
Second step, on CA6140 lathe, clamps workpiece with scroll chuck, rough turn blank cylindrical;
3rd step, heat treatment, modifier treatment;
4th step, on CA6140 lathe, clamps workpiece with scroll chuck, and face work centering, then reverses end for end. car other end to overall length, centering;
5th step, with two thimble clampings, each cylindrical of half finish turning, stays 0.5 millimeter of allowance;
6th step, finish turning screw thread cylindrical. length, chamfering is to drawing requirement size;
7th step, chooses worm screw roughing tool, point of a knife width 1.6mm-1.7mm, nose angle 39 °-40 °, cutting edge inclination 20 °-25 °; Worm screw finishing tool, point of a knife width 1.8mm, nose angle 40 °, cutting edge inclination 0 °-4 °;
8th step, during rough threading, rotating speed is 40 revs/min, is 12 revs/min during finish turning, adopts emulsion cooling, adopts inverted car processing, adopts upper slide rest scale method separately;
9th step, rough turn two worm threads, with roughing tool cutting to left and right method processing Article 1 helicla flute, until groove depth, bottom land are wide require size, and margin scale when remembeing upper slide rest cutting to left and right; Then roughing Article 2 helicla flute, at this moment moves forward or backward by small slide plate, can not exceed Article 1 spiral fluted margin scale add displacement, until complete Article 2 helicla flute during cutting to left and right to the moving range of small slide plate;
Tenth step, finish turning worm screw two is threaded into drawing requirement size, change worm screw finishing tool, finish turning Article 1 helicla flute, first car becomes first surface, finish turning second again, control flume bottom width and groove depth, and note the roughness of helicla flute two sides, until complete Article 1 helicla flute, and the margin scale of upper slide rest when remembeing cutting to left and right, fine finishining Article 2 helicla flute, by little drag to pull move a certain distance forward or backward, this distance is determined by screw-nut gap, first car becomes one side, finish turning another side again, the distance that upper slide rest moves forward and backward is that the Derivative limit on the left or on the right scale of Article 1 helicla flute upper slide rest adds displacement. ensure groove depth. and the size that bottom land is wide and two side roughness,
11 step, whether the normal tooth thickness measuring adjacent two teeth meets figure paper size, if meet, then worm tooth shape part machines, otherwise, depending on margin value, worm tooth shape is corrected. till meeting size.With file, flank, wedge angle and burr are repaired;
12 step, finish turning each several part cylindrical;
13 step, inspection.
Process of the present invention is simple, can ensure the crudy of workpiece, reduces difficulty of processing and production cost, enhances productivity.
Detailed description of the invention
The processing method of multistart worm of the present invention, comprises the following steps:
The first step, rough forging material, adopts No. 45 steel rough forgings;
Second step, on CA6140 lathe, clamps workpiece with scroll chuck, rough turn blank cylindrical;
3rd step, heat treatment, modifier treatment;
4th step, on CA6140 lathe, clamps workpiece with scroll chuck, and face work centering, then reverses end for end. car other end to overall length, centering;
5th step, with two thimble clampings, each cylindrical of half finish turning, stays 0.5 millimeter of allowance;
6th step, finish turning screw thread cylindrical. length, chamfering is to drawing requirement size;
7th step, chooses worm screw roughing tool, point of a knife width 1.6mm-1.7mm, nose angle 39 °-40 °, cutting edge inclination 20 °-25 °; Worm screw finishing tool, point of a knife width 1.8mm, nose angle 40 °, cutting edge inclination 0 °-4 °;
8th step, during rough threading, rotating speed is 40 revs/min, is 12 revs/min during finish turning, adopts emulsion cooling, adopts inverted car processing, adopts upper slide rest scale method separately;
9th step, rough turn two worm threads, with roughing tool cutting to left and right method processing Article 1 helicla flute, until groove depth, bottom land are wide require size, and margin scale when remembeing upper slide rest cutting to left and right; Then roughing Article 2 helicla flute, at this moment moves forward or backward by small slide plate, can not exceed Article 1 spiral fluted margin scale add displacement, until complete Article 2 helicla flute during cutting to left and right to the moving range of small slide plate;
Tenth step, finish turning worm screw two is threaded into drawing requirement size, change worm screw finishing tool, finish turning Article 1 helicla flute, first car becomes first surface, finish turning second again, control flume bottom width and groove depth, and note the roughness of helicla flute two sides, until complete Article 1 helicla flute, and the margin scale of upper slide rest when remembeing cutting to left and right, fine finishining Article 2 helicla flute, by little drag to pull move a certain distance forward or backward, this distance is determined by screw-nut gap, first car becomes one side, finish turning another side again, the distance that upper slide rest moves forward and backward is that the Derivative limit on the left or on the right scale of Article 1 helicla flute upper slide rest adds displacement. ensure groove depth. and the size that bottom land is wide and two side roughness,
11 step, whether the normal tooth thickness measuring adjacent two teeth meets figure paper size, if meet, then worm tooth shape part machines, otherwise, depending on margin value, worm tooth shape is corrected. till meeting size.With file, flank, wedge angle and burr are repaired;
12 step, finish turning each several part cylindrical;
13 step, inspection.
Claims (1)
1. a processing method for multistart worm, is characterized in that, comprises the following steps:
The first step, rough forging material, adopts No. 45 steel rough forgings;
Second step, on CA6140 lathe, clamps workpiece with scroll chuck, rough turn blank cylindrical;
3rd step, heat treatment, modifier treatment;
4th step, on CA6140 lathe, clamps workpiece with scroll chuck, and face work centering, then reverses end for end. car other end to overall length, centering;
5th step, with two thimble clampings, each cylindrical of half finish turning, stays 0.5 millimeter of allowance;
6th step, finish turning screw thread cylindrical. length, chamfering is to drawing requirement size;
7th step, chooses worm screw roughing tool, point of a knife width 1.6mm-1.7mm, nose angle 39 °-40 °, cutting edge inclination 20 °-25 °; Worm screw finishing tool, point of a knife width 1.8mm, nose angle 40 °, cutting edge inclination 0 °-4 °;
8th step, during rough threading, rotating speed is 40 revs/min, is 12 revs/min during finish turning, adopts emulsion cooling, adopts inverted car processing, adopts upper slide rest scale method separately;
9th step, rough turn two worm threads, with roughing tool cutting to left and right method processing Article 1 helicla flute, until groove depth, bottom land are wide require size, and margin scale when remembeing upper slide rest cutting to left and right; Then roughing Article 2 helicla flute, at this moment moves forward or backward by small slide plate, can not exceed Article 1 spiral fluted margin scale add displacement, until complete Article 2 helicla flute during cutting to left and right to the moving range of small slide plate;
Tenth step, finish turning worm screw two is threaded into drawing requirement size, change worm screw finishing tool, finish turning Article 1 helicla flute, first car becomes first surface, finish turning second again, control flume bottom width and groove depth, and note the roughness of helicla flute two sides, until complete Article 1 helicla flute, and the margin scale of upper slide rest when remembeing cutting to left and right, fine finishining Article 2 helicla flute, by little drag to pull move a certain distance forward or backward, this distance is determined by screw-nut gap, first car becomes one side, finish turning another side again, the distance that upper slide rest moves forward and backward is that the Derivative limit on the left or on the right scale of Article 1 helicla flute upper slide rest adds displacement. ensure groove depth. and the size that bottom land is wide and two side roughness,
11 step, whether the normal tooth thickness measuring adjacent two teeth meets figure paper size, if meet, then worm tooth shape part machines, otherwise, depending on margin value, worm tooth shape is corrected. till meeting size;
With file, flank, wedge angle and burr are repaired;
12 step, finish turning each several part cylindrical;
13 step, inspection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410756013.1A CN104646973A (en) | 2014-12-11 | 2014-12-11 | Processing method of multi-thread worm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410756013.1A CN104646973A (en) | 2014-12-11 | 2014-12-11 | Processing method of multi-thread worm |
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| Publication Number | Publication Date |
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| CN104646973A true CN104646973A (en) | 2015-05-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410756013.1A Pending CN104646973A (en) | 2014-12-11 | 2014-12-11 | Processing method of multi-thread worm |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108015492A (en) * | 2017-11-28 | 2018-05-11 | 湖北雄志塑胶五金制品有限公司 | Worm component production method |
| CN109604739A (en) * | 2018-12-13 | 2019-04-12 | 江西师范高等专科学校 | A kind of worm processing method and used cutter |
| CN110328501A (en) * | 2019-07-10 | 2019-10-15 | 二重（德阳）重型装备有限公司 | Large modulus Niemann worm processing method |
| CN112518251A (en) * | 2020-11-30 | 2021-03-19 | 南京中船绿洲机器有限公司 | Processing method of bidirectional guide screw |
| CN113369593A (en) * | 2021-05-18 | 2021-09-10 | 天津市福玛减速机有限公司 | Efficient rough machining method for circular-arc-tooth worm of speed reducer |
-
2014
- 2014-12-11 CN CN201410756013.1A patent/CN104646973A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108015492A (en) * | 2017-11-28 | 2018-05-11 | 湖北雄志塑胶五金制品有限公司 | Worm component production method |
| CN109604739A (en) * | 2018-12-13 | 2019-04-12 | 江西师范高等专科学校 | A kind of worm processing method and used cutter |
| CN110328501A (en) * | 2019-07-10 | 2019-10-15 | 二重（德阳）重型装备有限公司 | Large modulus Niemann worm processing method |
| CN110328501B (en) * | 2019-07-10 | 2021-06-25 | 二重（德阳）重型装备有限公司 | Method for processing large-modulus Niemann worm |
| CN112518251A (en) * | 2020-11-30 | 2021-03-19 | 南京中船绿洲机器有限公司 | Processing method of bidirectional guide screw |
| CN113369593A (en) * | 2021-05-18 | 2021-09-10 | 天津市福玛减速机有限公司 | Efficient rough machining method for circular-arc-tooth worm of speed reducer |
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Application publication date: 20150527 |