CN113118881A - Method for ensuring multi-cutter installation reference coincidence accuracy of rotary multi-cutter tooth punching machine - Google Patents

Method for ensuring multi-cutter installation reference coincidence accuracy of rotary multi-cutter tooth punching machine Download PDF

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Publication number
CN113118881A
CN113118881A CN202110473625.XA CN202110473625A CN113118881A CN 113118881 A CN113118881 A CN 113118881A CN 202110473625 A CN202110473625 A CN 202110473625A CN 113118881 A CN113118881 A CN 113118881A
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CN
China
Prior art keywords
cutter
punching
grinding
tool
punching machine
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Withdrawn
Application number
CN202110473625.XA
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Chinese (zh)
Inventor
冯喜奎
贾华坡
王雪峰
陈海涛
张伟
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Zhengzhou University of Science and Technology
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Zhengzhou University of Science and Technology
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Priority to CN202110473625.XA priority Critical patent/CN113118881A/en
Publication of CN113118881A publication Critical patent/CN113118881A/en
Withdrawn legal-status Critical Current

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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
    • B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23F—MAKING GEARS OR TOOTHED RACKS
    • B23F17/00—Special methods or machines for making gear teeth, not covered by the preceding groups
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23F—MAKING GEARS OR TOOTHED RACKS
    • B23F21/00—Tools specially adapted for use in machines for manufacturing gear teeth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23F—MAKING GEARS OR TOOTHED RACKS
    • B23F21/00—Tools specially adapted for use in machines for manufacturing gear teeth
    • B23F21/005—Tools specially adapted for use in machines for manufacturing gear teeth with plural tools on a common axis

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

The invention relates to a method for protecting the superposition accuracy of a multi-cutter installation reference of a rotary multi-cutter tooth punching machine, which effectively solves the problem of poor quality of punched comb teeth caused by the fact that the superposition accuracy of contours after multi-cutter installation cannot be ensured in the prior art; the technical scheme comprises the following steps: in the scheme, the original groove type punching cutter disc is replaced by the non-groove punching cutter disc, and the annular end face of the non-groove punching cutter disc is subjected to complete machine finish grinding in an assembly state, so that the reference surfaces of multi-cutter installation can keep high coincidence, the jumping during multi-cutter dynamic spinning is fundamentally eliminated, and the coincidence precision of the reference surfaces of the multi-cutter installation is ensured.

Description

Method for ensuring multi-cutter installation reference coincidence accuracy of rotary multi-cutter tooth punching machine
Technical Field
The invention relates to the technical field of multi-cutter installation reference plane coincidence accuracy, in particular to a method for protecting the multi-cutter installation reference coincidence accuracy of a rotary multi-cutter tooth punching machine.
Background
The metal rack is also called metal card clothing, and is a fiber carding element coated on a carding machine roller, the metal rack on the large roller is sleeved with a fiber carding element with the length of about ten thousand meters, and about 700 thousand comb teeth with the characteristics of tip, short, thin, dense, high-light junction and high precision are distributed on the metal rack, and the comb teeth are processed by a precision rotary tooth punching machine;
a plurality of punching knives, such as 4 punching knives and 6 punching knives, are uniformly arranged on a punching cutter disc of the existing rotary tooth punching machine at intervals, and the plurality of punching knives are clamped in knife grooves on the punching cutter disc, but because the height coincidence of the knife surface arranged at the bottom of a groove is difficult to keep when the reference surface of the knife grooves on the punching cutter disc is processed, the coincidence of the reference surfaces of the plurality of knives is difficult to keep, the contour coincidence degree of the plurality of knives arranged on the punching cutter disc is large, the punching die is collided, the clearance of the punching die is overlarge, the punched tooth shape is irregular, the punching die is required to be stopped and replaced under the above conditions, and the continuity of production and the quality of a next product are seriously influenced;
therefore, the running precision and reliability of the tooth punching station directly restrict whether the whole production line can run continuously and efficiently, and the tooth punching station is a key station of the whole production line;
in view of the above, we provide a method for a rotary multi-cutter tooth punching machine to ensure the superposition accuracy of multi-cutter installation reference, so as to solve the above problems.
Disclosure of Invention
In the scheme, the original groove type punching cutter disc is replaced by the non-groove type punching cutter disc, and the annular end face of the non-groove type punching cutter disc is integrally and finely ground in an assembly state, so that the reference surfaces of multi-cutter installation can keep high coincidence, the jumping during multi-cutter dynamic rotary punching is fundamentally eliminated, and the coincidence precision of the reference surfaces of the multi-cutter installation is guaranteed.
The method for ensuring the superposition accuracy of the multi-cutter installation reference by rotating the multi-cutter tooth punching machine comprises the following steps:
(1) replacing the original groove type punching cutter head with a non-groove punching cutter head;
(2) the punch cover is detached, the whole rotary table of the rotary multi-cutter tooth punching machine is placed on a workbench of an M7140 horizontal-shaft saw-tooth table surface grinding machine, and a gear reduction motor is matched as power;
(3) and (4) selecting a grinding wheel to carry out integral fine grinding on the annular tool mounting end face of the slotless punching cutter head.
Preferably, the coping in the step (3) is divided into three processes: primary grinding, fine grinding and finish grinding, wherein the grinding mode is sweep grinding.
Preferably, the gear reduction motor in the step (2) can be selected from GH32 type, 200Z/min.
Preferably, the grinding wheel is a cup-shaped grinding wheel and is made of chrome corundum 180 #.
Preferably, the grinding wheel is a parallel grinding wheel, cup-shaped features are trimmed by the parallel grinding wheel, and the cup-shaped feature region is used for carrying out integral end face finish grinding on the annular tool mounting surface of the slotless punching cutter.
Preferably, an annular end face of the slotless punching cutter disc provided with the punching cutter is enlarged by 5mm along the axial direction.
The beneficial effects of the technical scheme are as follows:
(1) in the scheme, the original groove type punching cutter disc is replaced by the non-groove punching cutter disc, and the annular end face of the non-groove punching cutter disc is integrally and finely ground in an assembly state, so that the reference surfaces of multi-cutter installation can keep high coincidence, the jumping during multi-cutter dynamic spinning is fundamentally eliminated, and the coincidence precision of the reference surfaces of the multi-cutter installation is ensured;
(2) in order to deal with multiple end grinding of the whole machine in the life cycle of the rotary multi-cutter tooth punching machine, the non-groove punching cutter disc and the punching cutter are assembled into a unified end face to be axially widened (5 mm) in the scheme, so that the machining consumption of multiple precise end grinding is stored, and the service life of the non-groove punching cutter disc is prolonged.
Drawings
FIG. 1 is a schematic view of a grinding machine end of the present invention;
FIG. 2 is a schematic view showing the installation relationship between a slotless punching cutter head and a plurality of punching cutters;
FIG. 3 is a schematic view of the separation of the die cover from the slotless die cutter head in accordance with the present invention;
FIG. 4 is a schematic view of another embodiment of the die cover and the slotless die cutter;
FIG. 5 is a schematic view of the structure of the slotless punching cutter head of the present invention;
FIG. 6 is a schematic top view of the slotless punching cutter head with a punching cutter and punching teeth;
FIG. 7 is a schematic view of the engagement between the die and the lower punch in accordance with the present invention;
FIG. 8 is a schematic view of the shape and position of the die cutter of the present invention;
FIG. 9 is a schematic view of the relationship between the slot die disc and the die cover according to the present invention;
FIG. 10 is a schematic view of the separation of the die cover from the slot die disc in accordance with the present invention;
FIG. 11 is a schematic view of the die cover separated from the slot die disc from another perspective in accordance with the present invention;
FIG. 12 is a schematic view of the construction of the slot die disc of the present invention;
FIG. 13 is a schematic structural view of a rotary multi-blade tooth punching machine according to the present invention.
Detailed Description
The foregoing and other technical matters, features and effects of the present invention will be apparent from the following detailed description of the embodiments with reference to the accompanying drawings, in which reference is made to the accompanying drawings, wherein like reference numerals refer to like elements throughout.
Embodiment 1, this embodiment provides a method for guaranteeing accuracy of overlapping of a multi-tool installation reference of a rotary multi-tool gear punching machine, including the following steps:
(1) referring to fig. 12, the original structure of the slotted punching cutter disc 27 is provided with a plurality of cutter slots for accommodating and mounting punching cutters on one annular end surface, the effect of its final mounting on a rotary multi-blade tooth punching machine, as shown in figures 9, 10 and 11, since the plurality of sipes cannot keep their groove bottom installation reference surfaces highly overlapped when machining is performed, further, when the punching cutters are arranged on the punching machine and teeth are punched, the datum planes of the punching cutters cannot be kept highly coincident, the coincidence degree of the cutter-shaped profiles is greatly reduced, the scheme replaces the original groove-type punching cutter disk with a non-groove punching cutter disk 5, the structure shown in figure 5 is that a plurality of punching knives 4 are directly arranged on one end surface of the ring shape of the slotless punching knife disk 5, referring to figures 2, 3 and 4, the installation effect that a plurality of punching knives 4 are installed on a slotless punching knife disk 5 and the slotless punching knife disk 5 is installed on a rotary multi-knife gear punching machine is achieved;
(2) when the slotless punching cutter head 5 and the punching cutter 4 are required to be installed and matched with an annular end face for end grinding, the punching head cover 1 is directly dismounted (as shown in figure 3), the rotary multi-cutter tooth punching machine and the rotary table 20 are integrally placed on a workbench 19 of an M7140 horizontal-axis tooth-cutting table surface grinding machine (as shown in figure 1), a gear reduction motor 22 is matched as power, the rotary multi-cutter tooth punching machine spindle 7 is driven to rotate through the gear reduction motor 22, and then the slotless punching cutter head 5 is driven to rotate (the gear reduction motor 22 is matched with a V-shaped belt pulley 17 through a V-shaped belt 23 to drive the rotary multi-cutter tooth punching machine spindle to rotate);
(3) the selected grinding wheel 21 is fixedly installed on a main shaft of an M7140 horizontal-shaft saw table surface grinding machine, as shown in figure 1 (the M7140 horizontal-shaft saw table surface grinding machine is not shown in the figure), the integral fine grinding processing is carried out on the annular tool mounting end surface of the slotless punching cutter 5 through the grinding wheel 21, so that when a plurality of tools are installed on the slotless punching cutter 5, the installation reference surfaces of the plurality of tools keep high coincidence, the contour coincidence precision of the plurality of tools is greatly improved, the phenomenon that when a rotary multi-tool tooth punching machine works, a punching die collides or a punching die gap is too large due to the low coincidence degree of the multi-tool installation reference surfaces, the punched tooth profile is irregular and integrated is avoided, the coincidence precision of the multi-tool installation reference is fundamentally ensured, the condition that the contour coincidence degree of the multi-tool punching is not high during multi-tool tooth punching is eliminated, therefore, the operation precision of the multi-tool punching is effectively improved, and small-gap punching can be realized, the service life of the die on the die-casting machine of the punching die at one time is prolonged, the tooth form quality of the metal rack can be improved, the opening rate of the punching and quenching coiled wire is improved, and the workload of equipment maintenance is reduced.
In example 2, the thinning in the step (3) is divided into three processes in total based on example 1: the grinding precision of the annular tool loading surface of the non-groove punching cutter head 5 can be higher through a plurality of grinding procedures, and the annular end surface of the non-groove punching cutter head 5 is ground through the grinding wheel 21 in a sweeping mode instead of grinding.
Embodiment 3, on the basis of embodiment 1, the gear reduction motor 22 in step (2) can be selected from GH32 type, 200Z/min.
Example 4, based on example 1, the slotless punch disc 5 is subjected to bearing steel quenching treatment, so that the selected grinding wheel 21 is a chrome corundum 180# cup grinding wheel.
In embodiment 5, on the basis of embodiment 4, the grinding wheel 21 in this embodiment may also be a parallel grinding wheel, then the parallel grinding wheel is used to trim a cup-shaped feature, and the cup-shaped feature region is used to perform grinding processing on the entire end face of the annular tool mounting surface of the slotless punch disc 5, and the working width (which may be 12 mm) of the cup ring portion of the parallel grinding wheel must completely sweep the annular end face of the slotless punch disc 5.
Embodiment 6, on the basis of embodiment 5, in order to deal with multiple end mills of the rotary multi-cutter tooth punching machine in the life cycle, in the scheme, an annular end surface of the non-groove punching cutter disc 5, on which the punching cutter is mounted, is increased by 5mm along the axial direction, the end mill of the whole machine is used by 0.15mm each time, the pre-stored consumption of 5mm is enough to be used for 32 times, the end mill is used once per half year and can be used for 16 years, and the service life of the non-groove punching cutter disc 5 is prolonged by storing the processing consumption of multiple precision end mills.
Referring to fig. 13, a cross-sectional view of a rotary multi-blade gear-punching machine required in the present embodiment is shown, which respectively includes the following results, a punch cover 1 is installed on a non-slot punch 5 through screws, one side of a plurality of punches 4 is pressed against an annular end face of the non-slot punch 5, and the other side is matched with a press-cutter screw 2 (the press-cutter screw and the punches are directly provided with a press-cutter plate 3), the non-slot punch 5 is fixedly connected with a main shaft 7 of the rotary multi-blade gear-punching machine through a connecting screw 6, in the figure, 8 corresponds to a front end cover, 9 corresponds to a main shaft box body, 10 corresponds to a back-to-back matching bearing, 11 corresponds to an oil mist lubrication interface, 12 corresponds to a front oil baffle ring, 13 is a round nut, 14 is a rear oil baffle ring, 15 is a D308 bearing, 16 is a rear end cover, 17 is a V-shaped belt pulley, 18 is a pair die-adjusting hand wheel, since the rotary multi-blade gear-punching machine is an improvement point of the, therefore, the structure and the use principle of the rotary multi-cutter tooth punching machine are not described too much;
referring to fig. 6, which is a schematic top view of a rotary multi-blade gear punching machine during gear punching operation, in which 29 is a lower die holder and 28 is a lower die, and referring to fig. 8, which is a schematic specific structural diagram of a punching blade, the punching blade includes a punching tool shank 24, a punching tool head 25 and a punching tool mounting reference surface 26, that is, when the punching blade is mounted on a slotless punching blade 5, the punching tool mounting reference surface 26 is abutted against an annular end surface of the slotless punching blade 5, as shown in fig. 3;
at present, a rotary tooth punching machine is developed towards a multi-cutter punching direction, such as a 4-cutter punching machine and a 6-cutter punching machine, because the tooth punching efficiency is high when the multi-cutter punching machine is used, but the multi-cutter punching machine is realized under the condition of small clearance, the tooth shape tooth state with sharp tooth tips and regular tooth shapes can be punched only when the clearance is small, the precise coincidence of the cutter shape contours when each cutter slides through a lower punching die under the rotating state is ensured to keep the small clearance tooth punching, the multi-cutter punching machine is formed by grinding after being clamped in groups, the shape contours of each cutter can be considered to be precisely coincided, but after the group of multi-cutters are scattered and assembled on a circular cutter installing surface of a cutter disc of the cutter punching cutter, the coincidence degree of coincidence of the cutter shape contours is greatly reduced, the key of the coincidence is whether the cutter installing reference surfaces of each cutter groove are coincided, the non-coincident jumping momentum of the multi-cutter punching is generally required to be not more than 3 mu when the multi-cutter punching is carried out, and the equipment assembly and maintenance personnel always reduce the non-coincidence of the multi, for example:
(1) disassembling the punch head, rotating the punch head by 90 degrees, 180 degrees and 270 degrees, and then assembling, thereby finding the minimum position of the jumping of the 6 cutter groove cutter mounting reference surfaces of the punch head;
(2) after the jumping value is recorded through measurement, grinding paste is applied to a grinding strip to repair and grind the bottom surface of a certain cutter groove with overlarge jumping;
(3) the jumping exceeding of the position is counteracted by repairing and grinding the tool-mounting side surface reference surface of a certain punching tool and mounting the upper tool to a tool position of a cutter head with jumping exceeding limit;
however, the problems cannot be fundamentally solved by the various methods, in the scheme, the traditional groove type punching cutter head is replaced by the non-groove punching cutter head 5, and a whole machine end grinding mode is adopted in an assembly state, so that the coincidence degree of the multi-cutter installation outline is greatly improved, the coincidence precision of the multi-cutter installation reference can be fundamentally ensured, the excessive jumping during multi-cutter tooth punching is eliminated, the running precision of the multi-cutter punching is effectively improved, small-gap tooth punching can be realized, the service life of a die on-die machine of a punching die is prolonged, the tooth state quality of a metal rack tooth can be improved, the starting rate of punching, quenching and coiling is improved, and the workload of equipment maintenance is reduced.
The above description is only for the purpose of illustrating the present invention, and it should be understood that the present invention is not limited to the above embodiments, and various modifications conforming to the spirit of the present invention are within the scope of the present invention.

Claims (6)

1. The method for ensuring the superposition accuracy of the multi-cutter installation reference by rotating the multi-cutter tooth punching machine comprises the following steps:
(1) replacing the original groove type punching cutter head with a non-groove punching cutter head;
(2) the punch cover is detached, the whole rotary table of the rotary multi-cutter tooth punching machine is placed on a workbench of an M7140 horizontal-shaft saw-tooth table surface grinding machine, and a gear reduction motor is matched as power;
(3) and (4) selecting a grinding wheel to carry out integral fine grinding on the annular tool mounting end face of the slotless punching cutter head.
2. The method for ensuring the superposition accuracy of the multi-tool installation reference of the rotary multi-tool tooth punching machine according to claim 1, wherein the grinding in the step (3) is totally divided into three procedures: primary grinding, fine grinding and finish grinding, wherein the grinding mode is sweep grinding.
3. The method for ensuring the multi-knife installation reference registration accuracy of the rotary multi-knife gear punching machine according to claim 1, wherein the gear reduction motor in the step (2) is selected from GH32 model 200Z/min.
4. The method for ensuring the superposition accuracy of the multi-tool installation reference of the rotary multi-tool tooth punching machine according to claim 1, wherein the grinding wheel is a cup-shaped grinding wheel and is made of chrome corundum 180 #.
5. The method for ensuring the superposition accuracy of the multi-tool installation reference of the rotary multi-tool tooth punching machine according to claim 4, wherein the grinding wheel is a parallel grinding wheel, the parallel grinding wheel is used for trimming a cup-shaped feature, and the cup-shaped feature region is used for grinding the integral end face of the annular tool mounting surface of the slotless punching cutter.
6. The method for ensuring the superposition accuracy of the multi-tool installation reference of the rotary multi-tool gear punching machine according to claim 1, wherein the side of the annular end surface of the non-groove punching cutter disc on which the punching cutter is installed is enlarged by 5mm along the axial direction.
CN202110473625.XA 2021-04-29 2021-04-29 Method for ensuring multi-cutter installation reference coincidence accuracy of rotary multi-cutter tooth punching machine Withdrawn CN113118881A (en)

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Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE837816C (en) * 1944-01-15 1952-05-02 Julius Ortlieb & Cie Werkzeug Die grinding machine
US4299062A (en) * 1977-11-30 1981-11-10 Erwin Junker Device for the production of gear wheels
EP0147545A2 (en) * 1983-12-21 1985-07-10 C. & E. FEIN GmbH & Co. Device for releasably securing especially a grinding disc to a portable power tool
CN2133591Y (en) * 1992-03-24 1993-05-19 李东周 Metal needle cloth tooth-pressing machine
CN201410631Y (en) * 2009-06-19 2010-02-24 天津市精诚机床制造有限公司 Layout of five-axis numerical control blade milling machine with curve-tooth bevel gear milling cutter
CN103612180A (en) * 2013-12-12 2014-03-05 济南第一机床有限公司 Special grinder for machining numerical control machine tool cutter and cutter machining method
CN203566436U (en) * 2013-09-25 2014-04-30 浙江吉利控股集团有限公司 Punch edge grinder for surface grinding machine
CN204295439U (en) * 2014-11-06 2015-04-29 武汉机床有限责任公司 A kind of curved-tooth bevel gear cutterhead grinder
CN106112706A (en) * 2016-08-19 2016-11-16 安徽雷默模具制造有限公司 A kind of drift edge of a knife milling frock clamp and using method thereof
CN108214125A (en) * 2016-12-22 2018-06-29 湖南中大创远数控装备有限公司 Cutterhead grinding attachment
CN110587246A (en) * 2019-08-27 2019-12-20 江阴塞特精密工具有限公司 Manufacturing process of external tooth cylinder type broach finish cutting gear cutter head

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE837816C (en) * 1944-01-15 1952-05-02 Julius Ortlieb & Cie Werkzeug Die grinding machine
US4299062A (en) * 1977-11-30 1981-11-10 Erwin Junker Device for the production of gear wheels
EP0147545A2 (en) * 1983-12-21 1985-07-10 C. & E. FEIN GmbH & Co. Device for releasably securing especially a grinding disc to a portable power tool
CN2133591Y (en) * 1992-03-24 1993-05-19 李东周 Metal needle cloth tooth-pressing machine
CN201410631Y (en) * 2009-06-19 2010-02-24 天津市精诚机床制造有限公司 Layout of five-axis numerical control blade milling machine with curve-tooth bevel gear milling cutter
CN203566436U (en) * 2013-09-25 2014-04-30 浙江吉利控股集团有限公司 Punch edge grinder for surface grinding machine
CN103612180A (en) * 2013-12-12 2014-03-05 济南第一机床有限公司 Special grinder for machining numerical control machine tool cutter and cutter machining method
CN204295439U (en) * 2014-11-06 2015-04-29 武汉机床有限责任公司 A kind of curved-tooth bevel gear cutterhead grinder
CN106112706A (en) * 2016-08-19 2016-11-16 安徽雷默模具制造有限公司 A kind of drift edge of a knife milling frock clamp and using method thereof
CN108214125A (en) * 2016-12-22 2018-06-29 湖南中大创远数控装备有限公司 Cutterhead grinding attachment
CN110587246A (en) * 2019-08-27 2019-12-20 江阴塞特精密工具有限公司 Manufacturing process of external tooth cylinder type broach finish cutting gear cutter head

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Application publication date: 20210716