CN106312699B - A kind of grinding processing method of the thick segment cutting tooth of spiral ring gear broaching tool - Google Patents
A kind of grinding processing method of the thick segment cutting tooth of spiral ring gear broaching tool Download PDFInfo
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- CN106312699B CN106312699B CN201610725475.6A CN201610725475A CN106312699B CN 106312699 B CN106312699 B CN 106312699B CN 201610725475 A CN201610725475 A CN 201610725475A CN 106312699 B CN106312699 B CN 106312699B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
- B24B3/16—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of broaches
Abstract
A kind of grinding processing method of the spiral thick segment cutting tooth of ring gear broaching tool of the present invention, is manufactured 4 stages that are divided into, overall teeth groove profile is back and forth roughly ground to realize that the quick of cutter blank removes according to the structure of the thick segment cutting tooth of spiral ring gear broaching tool；The reciprocal grinding-shaping of part of cutter front half section standard involute profile cutting tooth；Tooth root repaiies the reciprocal shaping continuous grinding being ground by tooth with tooth top chamfer cutting tooth of thin involute cutting tooth.So as to be conducive to the tissue of processing program needed for each process segment and allowance distribution；It ensure that the consistent processing of each cutting tooth, it is ensured that the uniformity of its tooth form, is convenient for processing quality control.4 stages of manufacture arrange according to optimal cutter material removing method, can complete the manufacture of whole cutter using an emery wheel by the progressively finishing to profile；Process stroke at the same time to extend effective grinding stroke as far as possible and shorten idle stroke, shorten manufacturing time, improve manufacture efficiency.
Description
Technical field
The invention belongs to spiral ring gear broaching tool manufacturing field, is related to the thick segment cutting tooth grinding of spiral ring gear broaching tool
The technological process planning of processing and corresponding grinding feed path planning, are specially a kind of thick segment cutting of spiral ring gear broaching tool
The grinding processing method of tooth.
Background technology
Spiral ring gear broaching tool is the important tool for realizing spiral ring gear wire pulling method.The precision of broaching tool is largely
On directly determine the processing quality of ring gear.Spiral ring gear broaching tool passes through the pre-manufactured hole in gear ring blank, relative to gear ring
Movement spin until cutting out gear ring completely.During this screw, in the cutting tooth of spiral broach is little by little cut
The tooth top chamfering structure of gear ring involute profile and gear ring.Tooth of the thick segment cutter tooth of spiral ring gear broaching tool to spiral ring gear
Shape carries out rough cut, and the forming and cutting that certain allowance is used for subsequent fine segment are retained in the involute profile direction of per tooth.
The thick segment structure of spiral ring gear broaching tool is as shown in Figure 1, cutter uses multi-head spiral chip pocket structure, and the rotation of chip pocket
It is opposite with the direction of rotation for processing ring gear to turn direction.Meanwhile all cutting tooths all accurately with spiral ring gear teeth groove shape
Into one-to-one Spiral distribution.Along tool axis from the cutting tooth for being first therefore distributed 4 kinds of shapes backward, it is followed successively by：Standard is gradually
Burst at the seams profile cutting tooth, and tooth root repaiies thin involute profile cutting tooth, outside circle cutting tooth and tooth top chamfer cutting tooth.Wherein,
The rear portion of thin involute profile cutting tooth distribution is repaiied in tooth root, outside circle cutting tooth is alternately dispersed with and tooth top chamfering is cut
Cut tooth.This form that is alternately distributed determines that outside circle cutting tooth (tooth top chamfer cutting tooth) and tooth root are repaiied thin involute profile and cut
Tooth is cut to be distributed in the corresponding structure of different chip pockets.
Ring gear spiral broach generally there are about the thick segment cutting tooth of 100~120 rows (being determined according to specific design), wherein about
It is the combination that tooth root repaiies thin involute profile cutting tooth, outside circle cutting tooth and tooth top chamfer cutting tooth to have half.It can be seen from the above that
The manufacture of the spiral thick segment cutting tooth of ring gear broaching tool is, it is necessary to be ground substantial amounts of thick segment cutting tooth.In addition, a variety of cutting tooth forms
Overlapping to cause grinding action complicated together, the interference that dissimilar tooth form easily occurs destroys, and the process-cycle is tediously long.It is another
Aspect, the material expensive of spiral ring gear broaching tool, blank manufacture and heat treatment cycle length, it is of high cost.Therefore, spiral internal tooth is improved
The workmanship of broaching tool is enclosed, rate of reducing the number of rejects and seconds has very important economic benefit meaning.
Currently, it is seldom for the thick segment grinding Research on Manufacturing Method of this kind of spiral ring gear broaching tool.In actual production,
Technologist and operating personnel specify according to the process experiences of itself with reference to the method for grinding of helical gear and common broaching tool
The grinding process flow of the spiral thick segment of ring gear broaching tool simultaneously plans corresponding wheel grinding path.Due to spiral ring gear broaching tool
The tooth form combining structure of thick segment complexity, current processing methods use each tooth-shape structure the strategy individually processed to the greatest extent may be used
The machining interference of tooth form can be avoided, so that it is low to result in grinding efficiency.Meanwhile the independent processing of every kind of tooth form is not only held
The mismachining tolerance being easily introduced between tooth form, the control for also resulting in various cutting tooth machining accuracies are very cumbersome.And the thick segment of broaching tool is whole
The uniformity of body profile accuracy is bad, directly affects the wire pulling method precision of gear and the use longevity of serious curtailment spiral broach
Life.
The content of the invention
For problems of the prior art, the present invention provides a kind of mill of the spiral thick segment cutting tooth of ring gear broaching tool
Processing method is cut, its accuracy of manufacture is ensured by the technological process and emery wheel feed path of optimization, improves high in machining efficiency, contracting
The short manufacturing cycle.
The present invention is to be achieved through the following technical solutions：
A kind of grinding processing method of the thick segment cutting tooth of spiral ring gear broaching tool, includes the following steps,
Step 1, using the emery wheel of standard involute profile, to the top half of whole broaching tool blank teeth groove profile, pass through
The reciprocal feed grinding of emery wheel, applies the amount of feeding in radial direction, completes the grinding of outside circle cutting tooth tooth top radius above section profile
Processing；The top half is the region outside tooth top chamfer cutting tooth diameter；
Step 2, still using the emery wheel profile in step 1, for the standard involute of spiral ring gear broaching tool front half section
Profile cutting tooth is back and forth ground, until reaching designated precision requirement；
Step 3, the grinding wheel profile after step 2 is repaired, changes into tooth root and repair thin involute profile；Using this
The emery wheel of profile is repaiied tooth root thin involute profile cutting tooth and is ground successively by tooth along the track of spiral chip flute, until all
Tooth root is repaiied thin involute profile cutting tooth and is processed；
Step 4, the grinding wheel profile after step 3 is trimmed to the corresponding profile of tooth top chamfer cutting tooth, directly to spiral shell
The tooth top chamfer cutting tooth of medial rotation ring gear broach second half section completes processing by being back and forth ground.
Preferably, in step 1, the feed stroke of each emery wheel keeps equidistant with tool axis, and feed haul distance is adjoint
Radial feed and gradually increase with reference to cutter hub taper profile.
Preferably, the specific range of work and emery wheel feed path pattern are as follows in step 1,
1.1 emery wheels outside broaching tool cutter hub, move to cutter tips to knife point position；Turn 1.2；
Radial feed bite of 1.2 emery wheels along broaching tool；If current emery wheel depth is less than the maximum of outside circle cutting tooth
Outside diameter, then exit the radial position in teeth groove to 1.1, then turn 1.4；Otherwise 1.3 are turned；
The helical trajectory of 1.3 emery wheels along current teeth groove is yearned for regrinding and is cut once；Grinding wheel movement haul distance is current sand
The minimum axial direction displacement of all cutting tooths contacted with emery wheel under depth is taken turns, then turns 1.2；
If 1.4 all teeth groove are all processed, turn 1.5；Otherwise, emery wheel is transported with respect to cutter along spiral chip flute direction
Adjacent sheaves are moved, turn 1.2；
1.5 emery wheels stop rotating away from cutter, complete the grinding of outside circle cutting tooth tooth top radius above section profile.
Preferably, the specific range of work and emery wheel feed path pattern are as follows in step 2,
2.1 grinding wheel movements to the rear of last row standard involute profile cutting tooth, and radial motion to it is current
The position of machined teeth groove top parasang bite, then, turns 2.2；
If 2.2 emery wheel current depths have reached the design gullet depth of standard involute profile cutting tooth, work as nipper
Groove processing is completed, and turns 2.5；Otherwise, emery wheel radially feeds unit bite, turns 2.3；
2.3 emery wheels are ground along the spiral trajectory of current teeth groove from back to front；Grinding stroke length is equal to last
Small one in the axial distance of one toothrow to the first toothrow and the axial distance of current all cutting tooths contacted with emery wheel；So
Afterwards, 2.4 are turned；
2.4 emery wheels along the helical trajectory of current teeth groove, back to the starting point of current stroke, then turn 2.2 from front to back；
If 2.5 all teeth groove are all processed, turn 2.6；Otherwise, cutter is rotated along spiral chip flute direction, until
Emery wheel aligns with adjacent sheaves；Then 2.1 are turned；
2.6 emery wheels stop revolution, complete to repair tooth root the processing of thin involute profile away from cutter.
Preferably, the specific range of work and emery wheel feed path pattern are as follows in step 3,
3.1 grinding wheel movements repair the rear of thin involute profile cutting tooth to last toothrow root, then turn 3.2.
Then 3.2 emery wheel radial motions turn 3.3 to the position with current machined teeth groove top parasang bite；
If 3.3 emery wheel current depths have reached the design gullet depth that tooth root repaiies thin involute profile cutting tooth, when
Nipper groove processing is completed, and turns 3.5；Otherwise, emery wheel radially feeds unit bite, turns 3.4；
3.4 emery wheels are back and forth ground along the spiral trajectory of current teeth groove；Grinding stroke is the office of current cutting tooth
Portion's scope, ensures that teeth groove two sides are all completely ground and emery wheel and other front and rear tooth form cutting tooths are without interference, Ran Houzhuan
3.3；
If 3.5 all tooth roots repair thin involute profile tooth and all complete to process, turn 3.7；Otherwise, 3.6 are turned；
If the corresponding all cutting tooths of 3.6 current spiral chip flutes all machine, grinding wheel movement to next bag
The position of last cutting tooth on the spiral chip flute of thin involute profile cutting tooth is repaiied containing tooth root, then turns 3.2；Otherwise,
Emery wheel moves to adjacent tooth slot position with respect to the direction of rotation of cutter along current spiral chip flute, then turns 3.2；
3.7 emery wheels stop revolution, complete the processing that tooth root repaiies thin involute profile cutting tooth away from cutter.
Preferably, the specific range of work and emery wheel feed path pattern are as follows in step 4,
4.1 grinding wheel movements are diametrically moved to apart from hair to the rear position of last toothrow chamfer cutting tooth
The position of base tooth chamfer cutting one unit bite of tooth, then turns 4.2；
If 4.2 current teeth groove radial depths machine, emery wheel is raised to the position of radial direction in 4.1, then turns 4.4；
Otherwise, one unit bite of emery wheel radial feed, turns 4.3；
4.3 emery wheels are back and forth ground along the spiral trajectory of current teeth groove；Grinding stroke is last toothrow top chamfer cutting
Tooth is to the axial location between first row tooth top chamfer cutting tooth；Then 4.2 are turned；
If 4.4 all teeth groove are all completed to process, turn 4.5；Otherwise, emery wheel is relative to cutter, along spiral chip flute
Direction of rotation be moved to adjacent tooth slot position, then turn 4.2；
4.5 emery wheels stop revolution, complete the processing of tooth top chamfer cutting tooth away from cutter.
Compared with prior art, the present invention has technique effect beneficial below：
The present invention is manufactured according to the structure of the thick segment cutting tooth of spiral ring gear broaching tool is divided into 4 stages, successively
For：Overall teeth groove profile is back and forth roughly ground to realize that the quick of cutter blank removes；Cutter front half section standard involute profile is cut
The reciprocal grinding-shaping of part of tooth；Tooth root repaiies being molded by tooth grinding and the reciprocal of tooth top chamfer cutting tooth for thin involute cutting tooth
Continuous grinding.So as to be conducive to the tissue of processing program needed for each process segment and allowance distribution；It ensure that each cutting
The consistent processing of tooth, it is ensured that the uniformity of its tooth form, is convenient for processing quality control.
Wherein, 4 stages of manufacture arrange according to optimal cutter material removing method, can be by profile
Progressively finishing can complete the manufacture of whole cutter using an emery wheel；Stroke is processed at the same time extends effectively grinding row as far as possible
Journey and shorten idle stroke, reduce the acceleration and deceleration in unnecessary time and grinding wheel movement, shorten manufacturing time, improve
Manufacture efficiency.The tooth top chamfer cutting tooth grinding stage is placed on finally, ensure that grinding wheel profile is repaiied thin standard from tooth root and gradually opened
Line is switched fast to tooth top chamfering teeth groove profile, reduces the grinding wheel dressing time.Meanwhile do not influencing spiral ring gear broaching tool
Operation principle under the premise of, monodentate grinding is become into efficient integrated reciprocating and is ground, greatly improves manufacture efficiency.
Brief description of the drawings
Fig. 1 is the structure diagram of the thick segment of spiral broach in the prior art.
Fig. 2 is the manufacturing process and grinding path schematic diagram of grinding processing method of the present invention.
Embodiment
With reference to specific embodiment, the present invention is described in further detail, it is described be explanation of the invention and
It is not to limit.
In order to ensure the grinding accuracy of manufacture of the thick segment cutting tooth of spiral ring gear broaching tool, and improve manufacture efficiency and cutter
The total quality of cutting tooth, the grinding processing method of the spiral thick segment cutting tooth of ring gear broaching tool of the present invention, for spiral internal tooth
The grinding manufacturing process flow and corresponding wheel grinding path for enclosing the thick segment cutting tooth of broaching tool optimize.According to spiral internal tooth
The profile and positional structure and process requirements of the thick segment cutting tooth of broaching tool are enclosed, the grinding of its cutting tooth is divided into four ranks
Section, and the wheel grinding path of optimization is provided for each stage, it can realize the quick mill of the thick segment cutting tooth of spiral broach
Cut manufacture, and succinct detection operation.
The complete grinding of cutting tooth of the spiral thick segment of ring gear broaching tool is divided into 4 stages by the present invention, and is directed to
Each stage design goes out the wheel grinding feed path of uniqueness：
First, using the emery wheel of standard involute profile, to the top half of whole broaching tool blank teeth groove profile, that is,
Region outside tooth top chamfer cutting tooth diameter, i.e. the corresponding teeth groove of all cutting tooths adds in the range of processing tooth in Fig. 2 shown in (a)
Work area domain, is ground by the reciprocal feed of emery wheel, and applying the amount of feeding in radial direction is rapidly completed processing.Wherein, the feed of each emery wheel
Stroke keeps equidistant with cutter shaft, and haul distance gradually increases with taper profile of the radial feed with reference to cutter hub.
Secondly, the profile of current emery wheel, that is, the emery wheel using standard involute profile are kept, for spiral ring gear
The standard involute profile cutting tooth of broaching tool front half section is back and forth ground, until reaching designated precision requirement.
Next, it is only necessary to a little profile finishing is carried out to grinding wheel profile, tooth root is changed into and repaiies thin involute profile.So
Afterwards, thin involute profile cutting tooth is repaiied to tooth root using the emery wheel of this profile to grind successively by tooth along the track of spiral chip flute
Cut, until all tooth roots are repaiied thin involute profile cutting tooth and processed.
Finally, emery wheel is rapidly trimmed to the corresponding profile of tooth top chamfer cutting tooth, directly to spiral ring gear broaching tool
The tooth top chamfer cutting tooth of second half section completes processing by being back and forth ground.
Within each stage, the current profile precision controlling for processing cutting tooth can be with independent detection so as to fulfill control.
Specifically, as shown in Fig. 2, 4 of the spiral thick segment cutting tooth of ring gear broaching tool processing in the method for the invention
The emery wheel feed path in stage and each stage is as described below：
Stage 1 --- using the corresponding wheel grinding profile of standard involute, outside circle is carried out to spiral ring gear broaching tool
Cutting tooth tooth top radius is with the grinding of outer portion profile.The range of work and emery wheel feed path pattern are referring in Fig. 2
(a), it is specific as follows：
Step.1 emery wheels outside cutter hub, move to cutter tips to knife point position.Then Step.2 is performed.
Radial feed bite of the Step.2 emery wheels along cutter.If current emery wheel depth is less than outside circle cutting tooth most
Big outside diameter, then exit teeth groove radial position into Step.1, then turn Step.4；Otherwise Step.3 is turned.
The helical trajectory of Step.3 emery wheels along current teeth groove is yearned for regrinding and is cut once.Grinding wheel movement haul distance is current
The minimum axial direction displacement of all cutting tooths contacted with emery wheel under emery wheel depth.Then Step.2 is turned.
If all teeth groove of Step.4 are all processed, turn Step.5；Otherwise, emery wheel with respect to cutter along spiral chip flute
Direction moves to adjacent sheaves, turns Step.2.
Step.5 emery wheels stop rotating away from cutter.This stage process is completed.
Stage 2 --- using the corresponding wheel grinding profile of standard involute, cut for the spiral thick segment of ring gear broaching tool
All standard involute profile cutting tooths of tooth first half are cut back and forth to be ground.The specific range of work and emery wheel walk cutter track
Footpath pattern is shown in (b) in Fig. 2：
Step.1 grinding wheel movements to the rear of last row standard involute profile cutting tooth, and radial motion with it is current
The position of machined teeth groove top parasang bite, then, turns Step.2.
If Step.2 emery wheel current depths have reached the design gullet depth of standard involute profile cutting tooth, currently
Teeth groove machines, and turns Step.5.Otherwise, emery wheel radially feeds unit bite, turns Step.3.
Step.3 emery wheels are ground along the spiral trajectory of current teeth groove from back to front.Grinding stroke length is equal to most
Latter toothrow is medium and small to the axial distance of the first toothrow and to both current all axial distances of cutting tooth contacted with emery wheel
One.Then, Step.4 is turned.
Step.4 emery wheels are from front to back along the helical trajectory of current teeth groove, back to the starting point of current stroke, Ran Houzhuan
Step.2。
If all teeth groove of Step.5 are all processed, turn Step.6；Otherwise, cutter is revolved along spiral chip flute direction
Turn, until emery wheel aligns with adjacent sheaves.Then Step.1 is turned.
Step.6 emery wheels stop revolution away from cutter.This stage process is completed.
Stage 3 --- the corresponding wheel grinding profile of thin involute is repaiied using tooth root, to the spiral ring gear broaching tool second half section
Interior all tooth roots are repaiied thin involute profile cutting tooth and are ground one by one.The specific range of work and emery wheel feed path pattern are shown in
(c) in Fig. 2：
Step.1 grinding wheel movements repair the rear of thin involute profile cutting tooth to last toothrow root, then turn Step.2.
The radial motion of Step.2 emery wheels is to the position with current machined teeth groove top parasang bite, Ran Houzhuan
Step.3。
If Step.3 emery wheel current depths have reached the design gullet depth that tooth root repaiies thin involute profile cutting tooth,
Current teeth groove machines, and turns Step.5；Otherwise, emery wheel radially feeds unit bite, turns Step.4.
Step.4 emery wheels are back and forth ground along the spiral trajectory of current teeth groove.Grinding stroke is current cutting tooth
Subrange, it is desirable to ensure that teeth groove two sides are all completely ground and emery wheel and other front and rear tooth form cutting tooths are without interference.
Then, Step.3 is turned.
If all tooth roots of Step.5 repair thin involute profile tooth and all complete to process, turn Step.7；Otherwise, turn
Step.6。
If the current corresponding all cutting tooths of spiral chip flute of Step.6 all machine, grinding wheel movement is to next
The position of last cutting tooth on the spiral chip flute of thin involute profile cutting tooth is repaiied comprising tooth root, then turns Step.2；
Otherwise, emery wheel moves to adjacent tooth slot position, Ran Houzhuan with respect to the direction of rotation of cutter along current spiral chip flute
Step.2。
Step.7 emery wheels stop revolution away from cutter.This stage process is completed.
Stage 4 --- using the corresponding wheel grinding profile of tooth top rounded corner profile, to the spiral thick segment of ring gear broaching tool
Tooth top chamfer cutting tooth in second half section is back and forth ground.The specific range of work and emery wheel feed path pattern are referring in Fig. 2
(d)：
Step.1 grinding wheel movements diametrically move to distance to the rear position of last toothrow chamfer cutting tooth
The position of blank tooth chamfer cutting one unit bite of tooth, then turns Step.2.
If the current teeth groove radial depths of Step.2 machine, emery wheel is raised to radial position in Step.1, Ran Houzhuan
Step.4；Otherwise, one unit bite of emery wheel radial feed, turns Step.3.
Step.3 emery wheels are back and forth ground along the spiral trajectory of current teeth groove.Grinding stroke is cut for last toothrow top chamfering
Tooth is cut to the axial location between first row tooth top chamfer cutting tooth.Then Step.2 is turned.
If all teeth groove of Step.4 are all completed to process, turn Step.5；Otherwise, emery wheel is relative to cutter, along spiral
The direction of rotation of chip pocket is moved to adjacent tooth slot position, then turns Step.2.
Step.5 emery wheels stop revolution away from cutter.This stage process is completed.
Geometry profile and cutter tooth distributing position of the invention based on the various cutting tooths of the spiral thick segment of ring gear broaching tool, at the same time
Consider that the change of grinding wheel profile and cutter tooth material remove the shortest path in space, design the work flow and walk cutter track accordingly
Footpath.Suitable for the processing of spiral ring gear broaching tool roughing tooth section, which ensure that the emery wheel needed for each process segment
Profile can be quickly obtained finishing, and maintain higher emery wheel service life, avoid in cutter manufacture due to replacing sand
Take turns the tool-setting error brought.Meanwhile this series of feed path mode maximumlly reduces sky feed stroke, improve and add
Work efficiency rate.In addition, this process segment division also assures that the independent control of dissimilar tooth form cutting tooth machining accuracy, so as to ensure
The workmanship of spiral ring gear broaching tool roughing tooth section.
Claims (5)
- A kind of 1. grinding processing method of the thick segment cutting tooth of spiral ring gear broaching tool, it is characterised in that include the following steps,Step 1, using the emery wheel of standard involute profile, to the top half of whole broaching tool blank teeth groove profile, emery wheel is passed through Reciprocal feed grinding, applies the amount of feeding in radial direction, completes the grinding of outside circle cutting tooth tooth top radius above section profile； The top half is the region outside tooth top chamfer cutting tooth diameter；The wherein specific range of work and emery wheel feed path pattern are as follows,1.1 emery wheels outside broaching tool cutter hub, move to cutter tips to knife point position；Turn 1.2；Radial feed bite of 1.2 emery wheels along broaching tool；If current emery wheel depth is less than the maximum outside diameter of outside circle cutting tooth, The radial position in teeth groove to 1.1 is then exited, then turns 1.4；Otherwise 1.3 are turned；The helical trajectory of 1.3 emery wheels along current teeth groove is yearned for regrinding and is cut once；Grinding wheel movement haul distance is deep for current emery wheel The minimum axial direction displacement of all cutting tooths contacted with emery wheel, then turns 1.2 under degree；If 1.4 all teeth groove are all processed, turn 1.5；Otherwise, emery wheel is moved to respect to cutter along spiral chip flute direction Adjacent sheaves, turn 1.2；1.5 emery wheels stop rotating away from cutter, complete the grinding of outside circle cutting tooth tooth top radius above section profile；Step 2, still using the emery wheel profile in step 1, for the standard involute profile of spiral ring gear broaching tool front half section Cutting tooth is back and forth ground, until reaching designated precision requirement；Step 3, the grinding wheel profile after step 2 is repaired, changes into tooth root and repair thin involute profile；Using this profile Emery wheel thin involute profile cutting tooth repaiied to tooth root be ground successively by tooth along the track of spiral chip flute, until all tooth roots Thin involute profile cutting tooth is repaiied to be processed；Step 4, the grinding wheel profile after step 3 is trimmed to the corresponding profile of tooth top chamfer cutting tooth, directly to spiral interior The tooth top chamfer cutting tooth of ring gear broach second half section completes processing by being back and forth ground.
- 2. a kind of grinding processing method of spiral thick segment cutting tooth of ring gear broaching tool according to claim 1, its feature Be, in step 1, the feed stroke of each emery wheel keeps equidistant with tool axis, feed haul distance with radial feed and Gradually increase with reference to cutter hub taper profile.
- 3. a kind of grinding processing method of spiral thick segment cutting tooth of ring gear broaching tool according to claim 1, its feature It is, the specific range of work and emery wheel feed path pattern are as follows in step 2,2.1 grinding wheel movements to the rear of last row standard involute profile cutting tooth, and radial motion to currently plus The position of work teeth groove top parasang bite, then, turns 2.2；If 2.2 emery wheel current depths have reached the design gullet depth of standard involute profile cutting tooth, current teeth groove adds Work is completed, and turns 2.5；Otherwise, emery wheel radially feeds unit bite, turns 2.3；2.3 emery wheels are ground along the spiral trajectory of current teeth groove from back to front；Grinding stroke length is arranged equal to last Tooth to the first toothrow axial distance and current all cutting tooths contacted with emery wheel axial distance in it is one small；Then, Turn 2.4；2.4 emery wheels along the helical trajectory of current teeth groove, back to the starting point of current stroke, then turn 2.2 from front to back；If 2.5 all teeth groove are all processed, turn 2.6；Otherwise, cutter is rotated along spiral chip flute direction, until emery wheel Align with adjacent sheaves；Then 2.1 are turned；2.6 emery wheels stop revolution, complete to repair tooth root the processing of thin involute profile away from cutter.
- 4. a kind of grinding processing method of spiral thick segment cutting tooth of ring gear broaching tool according to claim 1, its feature It is, the specific range of work and emery wheel feed path pattern are as follows in step 3,3.1 grinding wheel movements repair the rear of thin involute profile cutting tooth to last toothrow root, then turn 3.2；Then 3.2 emery wheel radial motions turn 3.3 to the position with current machined teeth groove top parasang bite；If 3.3 emery wheel current depths have reached the design gullet depth that tooth root repaiies thin involute profile cutting tooth, work as nipper Groove processing is completed, and turns 3.5；Otherwise, emery wheel radially feeds unit bite, turns 3.4；3.4 emery wheels are back and forth ground along the spiral trajectory of current teeth groove；Grinding stroke is the local model of current cutting tooth Enclose, ensure that teeth groove two sides are all completely ground and emery wheel and other front and rear tooth form cutting tooths are without interference, then turn 3.3；If 3.5 all tooth roots repair thin involute profile tooth and all complete to process, turn 3.7；Otherwise, 3.6 are turned；If the corresponding all cutting tooths of 3.6 current spiral chip flutes all machine, grinding wheel movement includes tooth to next Root repaiies the position of last cutting tooth on the spiral chip flute of thin involute profile cutting tooth, then turns 3.2；Otherwise, emery wheel Direction of rotation with respect to cutter along current spiral chip flute moves to adjacent tooth slot position, then turns 3.2；3.7 emery wheels stop revolution, complete the processing that tooth root repaiies thin involute profile cutting tooth away from cutter.
- 5. a kind of grinding processing method of spiral thick segment cutting tooth of ring gear broaching tool according to claim 1, its feature It is, the specific range of work and emery wheel feed path pattern are as follows in step 4,4.1 grinding wheel movements are diametrically moved to apart from blank tooth to the rear position of last toothrow chamfer cutting tooth The position of one unit bite of chamfer cutting tooth, then turns 4.2；If 4.2 current teeth groove radial depths machine, emery wheel is raised to the position of radial direction in 4.1, then turns 4.4；Otherwise, One unit bite of emery wheel radial feed, turns 4.3；4.3 emery wheels are back and forth ground along the spiral trajectory of current teeth groove；Grinding stroke for last toothrow top chamfer cutting tooth extremely Axial location between first row tooth top chamfer cutting tooth；Then 4.2 are turned；If 4.4 all teeth groove are all completed to process, turn 4.5；Otherwise, emery wheel is relative to cutter, along the rotation of spiral chip flute Turn direction and be moved to adjacent tooth slot position, then turn 4.2；4.5 emery wheels stop revolution, complete the processing of tooth top chamfer cutting tooth away from cutter.
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| JP2009220261A (en) * | 2008-03-19 | 2009-10-01 | Nachi Fujikoshi Corp | Helical broach for internal gear machining, and broaching method |
| CN201205616Y (en) * | 2008-04-17 | 2009-03-11 | 四川天虎工具有限责任公司 | Sectional keyway broach |
| CN103878447A (en) * | 2014-03-12 | 2014-06-25 | 山东润通齿轮集团有限公司 | Large precise split composite involute internal gear broach and cutting edge grinding method |
| CN104475861B (en) * | 2014-11-04 | 2017-01-25 | 西安航空动力股份有限公司 | Broaching turbine disc tongue-and-groove full-profile tooth type finishing broach and grinding method thereof |
| CN104440419B (en) * | 2014-11-04 | 2016-09-21 | 中国农业大学 | The numerical control grinding and machining method of planar secondary enveloping ring surface worm gear hob side relief |
-
2016
- 2016-08-25 CN CN201610725475.6A patent/CN106312699B/en active Active
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