CN105414683A - Large-modulus and large-lead thread machining method - Google Patents
Large-modulus and large-lead thread machining method Download PDFInfo
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- CN105414683A CN105414683A CN201510890554.8A CN201510890554A CN105414683A CN 105414683 A CN105414683 A CN 105414683A CN 201510890554 A CN201510890554 A CN 201510890554A CN 105414683 A CN105414683 A CN 105414683A
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- screw thread
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
- B23G1/00—Thread cutting; Automatic machines specially designed therefor
- B23G1/02—Thread cutting; Automatic machines specially designed therefor on an external or internal cylindrical or conical surface, e.g. on recesses
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Abstract
The invention relates to the technical field of thread machining, in particular to a large-modulus and large-lead thread machining method. The structure of a thread cutter is studied, the structure of a thread groove is studied, then the structure of the thread groove and the structure of the thread cutter are combined, thread cutting machining process steps are adjusted, the feed size, the cutting mode and the size in the machining process are controlled, and therefore vibration of the cutter in the cutting process is reduced, the phenomenon of tipping and cutter beating is avoided, and machining efficiency is improved.
Description
Technical field
The present invention relates to screw thread process technical field, the Screw thread process method that especially a kind of modulus is large, helical pitch is large.
Background technology
Screw thread process workpiece is carried out on lathe machining to form, especially for the processing of trapezoidal thread and module threads, because traditional processing method is carried out by screw thread after initial thread processes, process according to the method for bilateral cutting, make bite in cutting process, resistance suffered by it is comparatively large, and the difficulty that double thread is processed is larger; And large for helical pitch, that modulus is large screw thread, according to this processing method, its active length due to processing is longer, makes to shake in working angles, causes the phenomenon that tipping is forged a knife; If after adopting grooving cutter grooving shaping, then adopt forming cutter to modify processing, it causes the process-cycle longer, and efficiency is lower.
Given this, this researcher carries out studying and attempting in conjunction with existing Thread Machining Process and tool feeding method, and research and analysis are carried out to the structure of the screw chasing cutter of large pitch of the prior art, large modulus, double thread bite carries out large pitch, the technique of screw chasing forming processes of large modulus is explored, for large pitch, large modulus Screw thread process method provide a kind of new approaches.
Summary of the invention
In order to solve the above-mentioned technical problem existed in prior art, the invention provides the Screw thread process method that a kind of modulus is large, helical pitch is large.
Be achieved particular by following technical scheme:
The Screw thread process method that modulus is large, helical pitch is large, by screw thread process cutter to workpiece radial cutting, Formation Depth is the initial thread groove of b; After screw thread process cutter exits, by the degree of depth be first b initial thread groove according to B direction move screw thread process cutter be machined to screw thread mouth distance reach L time, complete the processing of ground floor; Again screw thread process cutter is moved according to A direction the second layer thread groove that cutting depth is b, and moving before screw thread process cutter starts to cut the second layer to A direction, by screw thread process cutter top after screw thread right side wall mobile and horizontal distance c, cut, after screw thread process cutter exits, then it is moved screw thread process cutter according to B direction be machined to distance and reach
complete the processing of the second layer; Successively according to the method described above, move screw thread process cutter according to B direction and be machined to distance and reach a, and in n-th layer process, meet all the time and move screw thread process cutter according to B direction and be machined to distance and reach
the screw thread process that modulus is large, helical pitch is large can be completed.
Described d is the angle with screw thread left side wall at the bottom of screw thread.
Described moves screw thread process cutter according to B direction, and the distance of movement is 0.6-0.8 times of the blade point degree a of screw thread process cutter.
Described A direction is move to the radial direction of workpiece; Described B direction is move to the axial direction of workpiece.
Described moves screw thread process cutter according to B direction, and screw thread process cutter contact point is also carried out sofening treatment by it before movement.
Described sofening treatment, be adopt neutral oxygen-flame alkynes to be heated to 700 ~ 800 DEG C, rapid water is chilled to room temperature.
Described moves screw thread process cutter according to A direction, and it is extremely 0.1 ~ 0.5mm deeply that sofening treatment is also carried out in the cutter apical grafting contact of screw thread process cutter by it before movement.
Described sofening treatment, be adopt neutral oxygen-flame alkynes to be heated to 700 ~ 800 DEG C, rapid water is chilled to room temperature.
Described degree of depth b is 1mm ~ 1.5mm.
Described sofening treatment can also adopt softening agent to smear process.
Above-mentioned softening agent, its material composition take parts by weight as polyethylene glycol 2-3 part, nano silicon 1-3 part, oleic acid 3-5 part, boric acid 1-2 part, potassium dihydrogen phosphate 0.1-0.5 part, oxirane 3-7 part, chromic acid tert-butyl 1-3 part, phosphate 3-5 part.
The preparation method of above-mentioned softening agent is 80-130 DEG C in temperature, by polyethylene glycol, nano silicon, oleic acid, boric acid, after potassium dihydrogen phosphate mixing, ultrasonic frequency is adopted to be 30-300Hz process 10-20min, make mi-crochemistry reaction occurs under the effect of nano silicon, combine the mixed material after by ultrasonic process again after temperature is leave standstill 3-5min in 3-7 DEG C, again by oxirane, chromic acid tert-butyl, phosphate adds, and to adjust temperature be 50-70 DEG C, mixing speed is 1000-3000r/min stir process 10-20min, make to obtain the activity that softening agent can improve metal material surface, reach the effect of rust cleaning lubrication, matallic surface layer is softened, reduce and cut difficulty, meanwhile, conservation treatment can also be carried out to the cutter head of bite, avoid too high temperature cause cutter head to rupture or soften, make it possible to double thread as required and carry out machining freely, cut down finished cost.
Compared with prior art, technique effect of the present invention is embodied in:
The present invention is studied by double thread bite structure, and the structure of double thread groove is studied, and then in conjunction with the structure of thread groove and the structure of screw chasing cutter, double thread cutting technology step adjusts, and feed size, cutting way and the size in process is controlled, make the vibrations reducing bite in working angles, avoid tipping and to forge a knife phenomenon, improve working (machining) efficiency.
In addition, the present invention, before processing process, also carries out sofening treatment to bite cutter apical grafting contact, reduces bite feed difficulty, reduce difficulty of processing; The present invention adopts neutral oxygen-flame alkynes to be heated to 700 ~ 800 DEG C, avoids the distortion of workpiece in sofening treatment process, improves the precision of workpiece, ensure that quality and the quality of workpiece, reduces difficulty of processing.
In addition, this researcher also adopts softening agent to smear process to bite contact point, make bite can easily feed at contact point place, the skidding of feed process or tipping is prevented to forge a knife phenomenon, improve the degree of accuracy and the efficiency that work pieces process are become to large pitch, large modulus, reduce difficulty of processing.
The present invention also combines and screens the raw material of softening agent, and controls its proportioning, and make to obtain softening agent and can to eliminate rust lubrication, improve the activity of surface of workpiece, softening surface of workpiece layer, reduces feed difficulty, raising working (machining) efficiency.And in conjunction with to the preparation technology of softening agent and the control of technological parameter, make each raw material in softening agent can carry out biochemical action accurately, improve the degree of contacting with each other between each material composition, improve the quality of softening agent, improve the rust cleaning lubricating effect to surface of workpiece, improve the bating effect to surface of workpiece, and the screw thread after machining can also be avoided to get rusty phenomenon, improve the quality of screw thread.
Accompanying drawing explanation
Fig. 1 is the machining sketch chart of the Screw thread process method that modulus of the present invention is large, helical pitch is large.
3-screw thread right side wall 4-screw thread left side wall 5-cutter right side wall 6-cutter left side wall at the bottom of the 2-screw thread of 1-cutter top.
The layer depth c-that a-blade point degree b-cuts when starting to cut the second layer cutter top to the horizontal range d-of screw thread right side wall movement be at the bottom of screw thread with the pitch A-of the angle L-screw thread mouth of screw thread left side wall be lower one deck cut time cutter moving direction B-be cutter moving direction when cutting same layer.
Detailed description of the invention
Below in conjunction with accompanying drawing and concrete embodiment, further restriction is done to technical scheme of the present invention, but claimed scope is not only confined to done description.
As shown in Figure 1, the method is in machining screw process, the first cutter first starting screw thread by the cutter top 1 of screw thread process cutter close to workpiece is processed, cutter top 12 ends at the bottom of screw thread of screw thread process cutter move, namely move to A direction, the degree of depth of movement is b, and then by adopting traditional Screw thread process method to carry out the processing machining the first cutter screw thread, obtains initial thread groove; After screwer withdraws, again the cutter top 1 of screwer is close to the bottom land of initial thread groove, and screw thread process cutter is moved to B direction, make screw thread process cutter that screw thread is carried out monolateral machining, namely the cutter left side wall of screw thread process cutter contacts with the sidewall of screw thread, and then reach the object of double thread processing, and make the Impact direction of screw thread process cutter in current process be the cutter top 1 of screwer and the cutter left side wall 6 of screwer, and the cutter right side wall 5 of screwer does not stress, reduce the resistance of screwer machining screw thread, improve working (machining) efficiency.
Limited by the distance of double thread processing cutter to the movement of B direction, and then the ultimate range of pitch can be defined as L, time second layer processing is carried out in combination again, the cutter top 1 of screw thread process cutter is started the first cutter in the c distance of distance screw thread left side wall 4 or screw thread right side wall 5, and this cutter is moved to A direction, make its depth of cut be after b, then it is moved according to B direction or to the opposite direction of B, and control displacement and be
make can not leave step on screw thread left side wall 4 and screw thread right side wall 5, complete the processing in thread groove, improve the degree of accuracy of double thread processing; And, successively by above-mentioned technique according to third layer, the 4th layer of processing to n-th layer, make at every turn move to A process under before one deck, after the cutter top of screw thread process cutter is all the distance of c to the direction displacement away from screw thread left side wall 4 or screw thread right side wall 5, start the first cutter, and depth of cut is b, after the first cutter withdrawing, move up according to B side, the distance of movement meets and when processing n layer is
make the screw thread left side wall 4 that processes and screw thread right side wall 5 smooth without step phenomenon, improve the qualified degree of screw thread.
Embodiment 1
The Screw thread process method that modulus is large, helical pitch is large, by screw thread process cutter to workpiece radial cutting, Formation Depth is the initial thread groove of b; After screw thread process cutter exits, by the degree of depth be first b initial thread groove according to B direction move screw thread process cutter be machined to screw thread mouth distance reach L time, complete the processing of ground floor; Again screw thread process cutter is moved according to A direction the second layer thread groove that cutting depth is b, and moving before screw thread process cutter starts to cut the second layer to A direction, by screw thread process cutter top after screw thread right side wall mobile and horizontal distance c, cut, after screw thread process cutter exits, then it is moved screw thread process cutter according to B direction be machined to distance and reach
complete the processing of the second layer; Successively according to the method described above, move screw thread process cutter according to B direction and be machined to distance and reach a, and in n-th layer process, meet all the time and move screw thread process cutter according to B direction and be machined to distance and reach
the screw thread process that modulus is large, helical pitch is large can be completed.
Described d be at the bottom of screw thread 2 with the angle of screw thread left side wall 4.
Described moves screw thread process cutter according to B direction, and the distance of movement is 0.6 times of the blade point degree a of screw thread process cutter.Optimum is 0.8 times, and more excellent is 0.7 times.Mobile 0.8 times time, the smoothness of processing at the bottom of the screw thread of every one deck effectively can be guaranteed to improve, but also withdrawing number of times can be reduced, improve working (machining) efficiency.
Described A direction is move to the radial direction of workpiece; Described B direction is move to the axial direction of workpiece.Described degree of depth b is 1.5mm.Degree of depth optimum is 1mm, and more excellent is 1.3mm.
Embodiment 2
On the basis of embodiment 1, other are all with embodiment 1, and described moves screw thread process cutter according to B direction, and screw thread process cutter contact point is also carried out sofening treatment by it before movement.Described sofening treatment, be adopt neutral oxygen-flame alkynes to be heated to 700 ~ 800 DEG C, rapid water is chilled to room temperature.
Embodiment 3
On the basis of embodiment 1, other are all with embodiment 1, and described moves screw thread process cutter according to A direction, and it is extremely 0.1 ~ 0.5mm deeply that cutter top 1 contact point of screw thread process cutter is also carried out sofening treatment by it before movement.Described sofening treatment, be adopt neutral oxygen-flame alkynes to be heated to 700 ~ 800 DEG C, rapid water is chilled to room temperature.
Embodiment 4
On the basis of embodiment 2, other are all with embodiment 2, and described sofening treatment can also adopt softening agent to smear process.Above-mentioned softening agent, its material composition is polyethylene glycol 2kg, nano silicon 1kg, oleic acid 3kg, boric acid 1kg, potassium dihydrogen phosphate 0.1kg, oxirane 3kg, chromic acid tert-butyl 1kg, phosphate 3kg by weight.
The preparation method of above-mentioned softening agent is 80 DEG C in temperature, by polyethylene glycol, nano silicon, oleic acid, boric acid, after potassium dihydrogen phosphate mixing, ultrasonic frequency is adopted to be 30Hz process 10min, make mi-crochemistry reaction occurs under the effect of nano silicon, combine the mixed material after by ultrasonic process again after temperature is leave standstill 3min in 3 DEG C, again by oxirane, chromic acid tert-butyl, phosphate adds, and to adjust temperature be 50 DEG C, mixing speed is 1000r/min stir process 10min, make to obtain the activity that softening agent can improve metal material surface, reach the effect of rust cleaning lubrication, matallic surface layer is softened, reduce and cut difficulty, meanwhile, conservation treatment can also be carried out to the cutter head of bite, avoid too high temperature cause cutter head to rupture or soften, make it possible to double thread as required and carry out machining freely, cut down finished cost.
Embodiment 5
On the basis of embodiment 3, other are all with embodiment 3, and described sofening treatment can also adopt softening agent to smear process.Above-mentioned softening agent, its material composition is polyethylene glycol 3kg, nano silicon 3kg, oleic acid 5kg, boric acid 2kg, potassium dihydrogen phosphate 0.5kg, oxirane 7kg, chromic acid tert-butyl 3kg, phosphate 5kg by weight.
The preparation method of above-mentioned softening agent is 130 DEG C in temperature, by polyethylene glycol, nano silicon, oleic acid, boric acid, after potassium dihydrogen phosphate mixing, ultrasonic frequency is adopted to be 300Hz process 20min, make mi-crochemistry reaction occurs under the effect of nano silicon, combine the mixed material after by ultrasonic process again after temperature is leave standstill 5min in 7 DEG C, again by oxirane, chromic acid tert-butyl, phosphate adds, and to adjust temperature be 70 DEG C, mixing speed is 3000r/min stir process 20min, make to obtain the activity that softening agent can improve metal material surface, reach the effect of rust cleaning lubrication, matallic surface layer is softened, reduce and cut difficulty, meanwhile, conservation treatment can also be carried out to the cutter head of bite, avoid too high temperature cause cutter head to rupture or soften, make it possible to double thread as required and carry out machining freely, cut down finished cost.
Embodiment 6
On the basis of embodiment 2, other are all with embodiment 2, and described sofening treatment can also adopt softening agent to smear process.Above-mentioned softening agent, its material composition is polyethylene glycol 2.5kg, nano silicon 2kg, oleic acid 4kg, boric acid 1.5kg, potassium dihydrogen phosphate 0.3kg, oxirane 5kg, chromic acid tert-butyl 2kg, phosphate 4kg by weight.
The preparation method of above-mentioned softening agent is 120 DEG C in temperature, by polyethylene glycol, nano silicon, oleic acid, boric acid, after potassium dihydrogen phosphate mixing, ultrasonic frequency is adopted to be 100Hz process 15min, make mi-crochemistry reaction occurs under the effect of nano silicon, combine the mixed material after by ultrasonic process again after temperature is leave standstill 4min in 5 DEG C, again by oxirane, chromic acid tert-butyl, phosphate adds, and to adjust temperature be 60 DEG C, mixing speed is 2000r/min stir process 15min, make to obtain the activity that softening agent can improve metal material surface, reach the effect of rust cleaning lubrication, matallic surface layer is softened, reduce and cut difficulty, meanwhile, conservation treatment can also be carried out to the cutter head of bite, avoid too high temperature cause cutter head to rupture or soften, make it possible to double thread as required and carry out machining freely, cut down finished cost.
Claims (10)
1. the Screw thread process method that modulus is large, helical pitch is large, is characterized in that, by screw thread process cutter to workpiece radial cutting, Formation Depth is the initial thread groove of b; After screw thread process cutter exits, by the degree of depth be first b initial thread groove according to B direction move screw thread process cutter be machined to screw thread mouth distance reach L time, complete the processing of ground floor; Again screw thread process cutter is moved according to A direction the second layer thread groove that cutting depth is b, and moving before screw thread process cutter starts to cut the second layer to A direction, by screw thread process cutter top to screw thread right side wall mobile and horizontal distance
cafter, cut, after screw thread process cutter exits, then it is moved screw thread process cutter according to B direction be machined to distance and reach
complete the processing of the second layer; Successively according to the method described above, move screw thread process cutter according to B direction and be machined to distance and reach a, and in n-th layer process, meet all the time and move screw thread process cutter according to B direction and be machined to distance and reach
the screw thread process that modulus is large, helical pitch is large can be completed.
2. the Screw thread process method that modulus is large, helical pitch is large as claimed in claim 1, is characterized in that, described d is the angle of (2) at the bottom of screw thread and screw thread left side wall (4).
3. the Screw thread process method that modulus is large, helical pitch is large as claimed in claim 1, it is characterized in that, described moves screw thread process cutter according to B direction, and the distance of movement is 0.6-0.8 times of the blade point degree a of screw thread process cutter.
4. the as claimed in claim 1 Screw thread process method that modulus is large, helical pitch is large, is characterized in that, described A direction is move to the radial direction of workpiece; Described B direction is move to the axial direction of workpiece.
5. the Screw thread process method that modulus is large, helical pitch is large as claimed in claim 1, it is characterized in that, described moves screw thread process cutter according to B direction, and screw thread process cutter contact point is also carried out sofening treatment by it before movement.
6. the Screw thread process method that modulus is large, helical pitch is large as claimed in claim 5, is characterized in that, described sofening treatment, is to adopt neutral oxygen-flame alkynes to be heated to 700 ~ 800 DEG C, and rapid water is chilled to room temperature.
7. the Screw thread process method that modulus is large, helical pitch is large as claimed in claim 1, it is characterized in that, described moves screw thread process cutter according to A direction, and it is extremely 0.1 ~ 0.5mm deeply that cutter top (1) contact point of screw thread process cutter is also carried out sofening treatment by it before movement.
8. the Screw thread process method that modulus is large, helical pitch is large as claimed in claim 7, is characterized in that, described sofening treatment, is to adopt neutral oxygen-flame alkynes to be heated to 700 ~ 800 DEG C, and rapid water is chilled to room temperature.
9. the Screw thread process method that modulus is large, helical pitch is large as claimed in claim 1, it is characterized in that, described degree of depth b is 1mm ~ 1.5mm.
10. the Screw thread process method that the modulus as described in any one of claim 5-8 is large, helical pitch is large, is characterized in that, described sofening treatment can also adopt softening agent to smear process.
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| CN201510890554.8A CN105414683B (en) | 2015-12-07 | 2015-12-07 | The Screw thread process method that a kind of modulus is big, lead is big |
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| CN201510890554.8A CN105414683B (en) | 2015-12-07 | 2015-12-07 | The Screw thread process method that a kind of modulus is big, lead is big |
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| CN105414683B CN105414683B (en) | 2019-03-05 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110039129A (en) * | 2019-04-30 | 2019-07-23 | 哈尔滨汽轮机厂有限责任公司 | A kind of processing method of steam turbine valve disc steep-pitch thread |
| CN110153510A (en) * | 2019-03-26 | 2019-08-23 | 宁夏天地奔牛实业集团有限公司 | A kind of digital control type interlocks feed Screw thread process method |
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| CN110153510A (en) * | 2019-03-26 | 2019-08-23 | 宁夏天地奔牛实业集团有限公司 | A kind of digital control type interlocks feed Screw thread process method |
| CN110039129A (en) * | 2019-04-30 | 2019-07-23 | 哈尔滨汽轮机厂有限责任公司 | A kind of processing method of steam turbine valve disc steep-pitch thread |
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Effective date of registration: 20230301 Address after: 550018 no.258, north section of Xintian Avenue, Wudang District, Guiyang City, Guizhou Province Patentee after: GUIZHOU ZHENHUA QUNYING ELECTRIC APPLIANCE CO., LTD.(STATE-OWNED NO.891 FACTORY) Address before: 558000 Duchuanbao, Economic Development Zone, Duyun City, Qiannan Buyei and Miao Autonomous Prefecture, Guizhou Province Patentee before: CHINA ZHENHUA Group JIUDA MACHINERY FACTORY |