CN105689822A - Multi-line grinding wheel for multiple threads - Google Patents

Multi-line grinding wheel for multiple threads Download PDF

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Publication number
CN105689822A
CN105689822A CN201610080550.8A CN201610080550A CN105689822A CN 105689822 A CN105689822 A CN 105689822A CN 201610080550 A CN201610080550 A CN 201610080550A CN 105689822 A CN105689822 A CN 105689822A
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CN
China
Prior art keywords
grinding
emery wheel
multiple threads
sword
wheel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201610080550.8A
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Chinese (zh)
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CN105689822B (en
Inventor
王水铭
徐强
郑继贵
王春明
豆永强
黄玉平
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Beijing Research Institute of Precise Mechatronic Controls
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Beijing Research Institute of Precise Mechatronic Controls
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Priority to CN201610080550.8A priority Critical patent/CN105689822B/en
Publication of CN105689822A publication Critical patent/CN105689822A/en
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Classifications

    • 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
    • B23G5/00—Thread-cutting tools; Die-heads
    • 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
    • B23G1/36—Thread cutting; Automatic machines specially designed therefor by grinding
    • B23G1/38—Thread cutting; Automatic machines specially designed therefor by grinding with grinding discs guided along the workpiece in accordance with the pitch of the required thread
    • 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
    • B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
    • B24B19/02—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding grooves, e.g. on shafts, in casings, in tubes, homokinetic joint elements
    • B24B19/022—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding grooves, e.g. on shafts, in casings, in tubes, homokinetic joint elements for helicoidal grooves

Abstract

The invention relates to a multi-line grinding wheel for multiple threads. The number n of grinding blades of the grinding wheel is equal to the number m of the multiple threads. The molded surfaces of the n grinding blades are consistent. The n grinding blades are distributed in the axial direction according to the following rule: Li+1=Li+(k*m+(i-1)/m)*P0. The multi-line grinding wheel is used for machining the multiple threads, so that the defects that when a single-line grinding wheel is used for machining multiple threads, the requirement for indexing is high, and the machining process is cumbersome are overcome, and the multiple threads can be machined through one-time grinding. The requirements for the grinding feed amount, chip removal and thread pitches are fully considered, distribution of the grinding blades is adjusted through the value of k, and the machining requirements are met.

Description

A kind of multiple-threaded multi-rib grinding emery wheel
Technical field
The present invention relates to a kind of multiple-threaded multi-rib grinding emery wheel, belong to emery wheel field。
Background technology
Planetary roller screw is typical planetary spiral transmission, and its transmission osculating element is screw thread, and screw mandrel and nut are multiple thread, are typically greater than 3。The current multiple-threaded process of single line wheel grinding is: emery wheel adjusts the amount of feeding, and first grinding goes out wall scroll helix；Then, by index dial, adjust the original position of Article 2 helix, it is achieved emery wheel to cutter, grinding goes out Article 2 helix；Article 3, ..., nth bar by that analogy。
This kind of method is owing to using single line emery wheel, the profile of helix can be impacted by the abrasion of emery wheel, and along with the carrying out of grinding process, abrasion of grinding wheel is increasingly severe, once the magnitude of its abrasion is enough to have influence on helix molding surface size, it is necessary to emery wheel is carried out correction of the flank shape；Process is relatively complicated, and it is difficult to ensure that relative positional accuracy after having practiced Buddhism or Taoism, between emery wheel and workpiece。
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, it is provided that a kind of multiple thread multi-rib grinding emery wheel, it is provided that multiple grinding swords reduce the requirement to calibration, improve machining accuracy and working (machining) efficiency。
The object of the invention is achieved by following technical solution:
There is provided a kind of multiple-threaded multi-rib grinding emery wheel, it is characterised in that described wheel grinding sword quantity is that n is equal with multiple-threaded head number m, and the profile of n grinding sword is consistent；N grinding sword axial distribution follows following rule: Li+1=Li+(k*m+(i-1)/m)*P0, wherein LiFor the distance of i-th grinding sword centre distance abrasive wheel end face, k is positive integer, P0Pitch for multi start thread。
Preferably, the value of k is adjusted according to pitch size, and as pitch≤1mm, k takes 3～5；When pitch > 1mm time, k takes 1 or 2。
Preferably, the value of k requires to be adjusted according to chip removal, and chip removal requires that distance is more big, and the value of k is more big。
Preferably, the profile of n grinding sword is different。
Preferably, n is 3,5 or 6。
The present invention compared with prior art has the advantage that
(1) present invention adopts multi-rib grinding emery wheel processing multiple thread, overcomes employing single line emery wheel processing multiple thread high for calibration requirement, and the defect that the course of processing is loaded down with trivial details can realize multiple-threaded processing by a grinding。
(2) n grinding sword axial distribution follow regularity: L of the present inventioni+1=Li+(k*m+(i-1)/m)*P0, taken into full account the requirement of grinding and feeding amount, chip removal requirement, pitch factor, adjusted the distribution of grinding sword by the value of k, reach processing request。
(3) processing of single line emery wheel is adopted, once the magnitude of its abrasion is enough to have influence on helix molding surface size, it is necessary to emery wheel is carried out correction of the flank shape；The present invention adopts multi-rib grinding emery wheel, reduces the wear extent of each grinding sword, decreases grinding wheel shaping number of times, it is ensured that the machining accuracy of workpiece。
Accompanying drawing explanation
Fig. 1 is existing plain wheel schematic diagram；
Fig. 2 is multi-rib grinding emery wheel schematic diagram of the present invention。
Detailed description of the invention
The multi-rib grinding emery wheel for multiple thread processing that the present invention proposes includes multiple grinding sword, and the quantity m of grinding sword is equal with multiple-threaded head number n, and n grinding sword axial distribution follows following rule: Li+1=Li+(k*m+(i-1)/m)*P0, wherein LiFor the distance of i-th grinding sword centre distance abrasive wheel end face, Li+1For the distance of i+1 grinding sword centre distance abrasive wheel end face, k is positive integer, P0For multiple-threaded pitch, 1≤i≤n-1。
Axial spacing between each grinding sword takes into full account the chip removal of grinding metal fillings, and its axial spacing meets the rule of pitch calibration；Adopt this multiple thread multi-rib grinding emery wheel can reduce the requirement to calibration, improve machining accuracy and working (machining) efficiency。Precision and performance for thread part provide safeguard。
Fig. 2 is the multi-thread emery wheel for multiple thread grinding that the present invention puts forward, the multi-thread emery wheel of following rule is followed in accordance with n grinding sword axial distribution, it is when grinding screw thread, and first left grinding sword first touches workpiece, and first grinding sharpening cuts Article 1 helix；When abrasive grinding wheel is along workpiece moving axially relative (k*m+ (i-1)/m) * P0Time, i-th grinding sword starts to process i-th helix；Until the n-th grinding sharpening cuts out nth bar helix, complete the processing of m (m=n) head thread。
The value of k is adjusted according to pitch size, and as pitch≤1mm, k takes 3～5；When pitch > 1mm time, k takes 1 or 2；The value of k requires to be adjusted according to chip removal simultaneously, and chip removal requires that distance is more big, and the value of k is more big。
Consistent or n grinding sword the profile of profile that can select n grinding sword according to actual needs is different。
According to actual needs, also can arrange before first grinding sword and repair top sword, repair the radial edge high altitude the pushing up sword height of thread less than 15%。
The present invention is successfully applied in the screw mandrel of planetary roller screw and the processing of nut, it is ensured that machining accuracy, improves efficiency。
The above; being only the detailed description of the invention that the present invention is best, but protection scope of the present invention is not limited thereto, any those familiar with the art is in the technical scope that the invention discloses; the change that can readily occur in or replacement, all should be encompassed within protection scope of the present invention。
The content not being described in detail in description of the present invention belongs to the known technology of professional and technical personnel in the field。

Claims (5)

1. a multiple-threaded multi-rib grinding emery wheel, it is characterised in that described wheel grinding sword quantity is that n is equal with multiple-threaded head number m, and the profile of n grinding sword is consistent；N grinding sword axial distribution follows equation below: Li+1=Li+(k*m+(i-1)/m)*P0, wherein LiFor the distance of i-th grinding sword centre distance abrasive wheel end face, k is positive integer, P0For multiple-threaded pitch, 1≤i≤n-1。
2. multiple-threaded multi-rib grinding emery wheel as claimed in claim 1, it is characterised in that as pitch≤1mm, k takes 3～5；When pitch > 1mm time, k takes 1 or 2。
3. multiple-threaded multi-rib grinding emery wheel as claimed in claim 1 or 2, it is characterised in that the value of k requires to be adjusted according to chip removal, chip removal requires that distance is more big, and the value of k is more big。
4. multiple-threaded multi-rib grinding emery wheel as claimed in claim 1, it is characterised in that the profile of n grinding sword is different。
5. multiple-threaded multi-rib grinding emery wheel as claimed in claim 1, it is characterised in that n is 3,5 or 6。
CN201610080550.8A 2016-02-04 2016-02-04 A kind of multiple-threaded multi-rib grinding emery wheel Active CN105689822B (en)

Priority Applications (1)

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CN201610080550.8A CN105689822B (en) 2016-02-04 2016-02-04 A kind of multiple-threaded multi-rib grinding emery wheel

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Application Number Priority Date Filing Date Title
CN201610080550.8A CN105689822B (en) 2016-02-04 2016-02-04 A kind of multiple-threaded multi-rib grinding emery wheel

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CN105689822B CN105689822B (en) 2018-04-10

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113752095A (en) * 2021-09-01 2021-12-07 杭州大和江东新材料科技有限公司 Ceramic product thread machining method
CN113814487A (en) * 2021-09-14 2021-12-21 北京精密机电控制设备研究所 Multi-line staggered-head grinding wheel for small-lead-angle threads and staggered-head thread grinding method
CN114833406A (en) * 2022-03-24 2022-08-02 航天材料及工艺研究所 Multi-blade grinding method for external threads of continuous fiber reinforced ceramic matrix composite

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Publication number Priority date Publication date Assignee Title
JPS6186125A (en) * 1984-10-04 1986-05-01 Kohinata Kogyosho:Kk Grinding/shaping method and its device for saw-edged teeth
CN85203992U (en) * 1985-09-25 1986-10-08 康济 Multi-head screw sand-wheel
SU1341009A1 (en) * 1985-12-24 1987-09-30 Научно-производственное объединение по комплексному технологическому проектированию станкостроительных предприятий "Оргстанкинпром" Multithread grinding wheel
JPH08132320A (en) * 1994-11-08 1996-05-28 Nippon Seiko Kk Outer surface screw grinding method
CN1293100A (en) * 2000-12-01 2001-05-02 上海柴油机股份有限公司 Technology for machining top arc of teeth for thread rolling die
CN1689760A (en) * 2004-04-28 2005-11-02 雷肖尔股份公司 Shaving technique and shaving tool of cylinder grinding worm for continuous tumbling gear
CN202174451U (en) * 2011-07-29 2012-03-28 台州瓦尔特工具制造有限公司 Screw tap multi-line grinding machine

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6186125A (en) * 1984-10-04 1986-05-01 Kohinata Kogyosho:Kk Grinding/shaping method and its device for saw-edged teeth
CN85203992U (en) * 1985-09-25 1986-10-08 康济 Multi-head screw sand-wheel
SU1341009A1 (en) * 1985-12-24 1987-09-30 Научно-производственное объединение по комплексному технологическому проектированию станкостроительных предприятий "Оргстанкинпром" Multithread grinding wheel
JPH08132320A (en) * 1994-11-08 1996-05-28 Nippon Seiko Kk Outer surface screw grinding method
CN1293100A (en) * 2000-12-01 2001-05-02 上海柴油机股份有限公司 Technology for machining top arc of teeth for thread rolling die
CN1689760A (en) * 2004-04-28 2005-11-02 雷肖尔股份公司 Shaving technique and shaving tool of cylinder grinding worm for continuous tumbling gear
CN202174451U (en) * 2011-07-29 2012-03-28 台州瓦尔特工具制造有限公司 Screw tap multi-line grinding machine

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Title
严伟麟: "《多线砂轮磨削螺纹》", 《机械工艺师》 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113752095A (en) * 2021-09-01 2021-12-07 杭州大和江东新材料科技有限公司 Ceramic product thread machining method
CN113814487A (en) * 2021-09-14 2021-12-21 北京精密机电控制设备研究所 Multi-line staggered-head grinding wheel for small-lead-angle threads and staggered-head thread grinding method
CN114833406A (en) * 2022-03-24 2022-08-02 航天材料及工艺研究所 Multi-blade grinding method for external threads of continuous fiber reinforced ceramic matrix composite

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