US20140234039A1 - Novel rigid universal cartridge for holding system - Google Patents

Novel rigid universal cartridge for holding system Download PDF

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Publication number
US20140234039A1
US20140234039A1 US14/115,876 US201214115876A US2014234039A1 US 20140234039 A1 US20140234039 A1 US 20140234039A1 US 201214115876 A US201214115876 A US 201214115876A US 2014234039 A1 US2014234039 A1 US 2014234039A1
Authority
US
United States
Prior art keywords
cartridge
screw
thread
combination screw
cutter
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.)
Abandoned
Application number
US14/115,876
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English (en)
Inventor
Vijay Kumar Mada
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of US20140234039A1 publication Critical patent/US20140234039A1/en
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C5/00—Milling-cutters
    • B23C5/16—Milling-cutters characterised by physical features other than shape
    • B23C5/20—Milling-cutters characterised by physical features other than shape with removable cutter bits or teeth or cutting inserts
    • B23C5/22—Securing arrangements for bits or teeth or cutting inserts
    • B23C5/24—Securing arrangements for bits or teeth or cutting inserts adjustable
    • B23C5/2472—Securing arrangements for bits or teeth or cutting inserts adjustable the adjusting means being screws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B29/00—Holders for non-rotary cutting tools; Boring bars or boring heads; Accessories for tool holders
    • B23B29/03—Boring heads
    • B23B29/034—Boring heads with tools moving radially, e.g. for making chamfers or undercuttings
    • B23B29/03403—Boring heads with tools moving radially, e.g. for making chamfers or undercuttings radially adjustable before starting manufacturing
    • B23B29/03407—Boring heads with tools moving radially, e.g. for making chamfers or undercuttings radially adjustable before starting manufacturing by means of screws and nuts
    • B23B29/0341—Cartridges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C5/00—Milling-cutters
    • B23C5/16—Milling-cutters characterised by physical features other than shape
    • B23C5/20—Milling-cutters characterised by physical features other than shape with removable cutter bits or teeth or cutting inserts
    • B23C5/22—Securing arrangements for bits or teeth or cutting inserts
    • B23C5/2204—Securing arrangements for bits or teeth or cutting inserts with cutting inserts clamped against the walls of the recess in the cutter body by a clamping member acting upon the wall of a hole in the insert
    • B23C5/2226—Securing arrangements for bits or teeth or cutting inserts with cutting inserts clamped against the walls of the recess in the cutter body by a clamping member acting upon the wall of a hole in the insert for plate-like cutting inserts fitted on an intermediate carrier, e.g. shank fixed in the cutter body
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C5/00—Milling-cutters
    • B23C5/16—Milling-cutters characterised by physical features other than shape
    • B23C5/20—Milling-cutters characterised by physical features other than shape with removable cutter bits or teeth or cutting inserts
    • B23C5/22—Securing arrangements for bits or teeth or cutting inserts
    • B23C5/24—Securing arrangements for bits or teeth or cutting inserts adjustable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C5/00—Milling-cutters
    • B23C5/16—Milling-cutters characterised by physical features other than shape
    • B23C5/20—Milling-cutters characterised by physical features other than shape with removable cutter bits or teeth or cutting inserts
    • B23C5/22—Securing arrangements for bits or teeth or cutting inserts
    • B23C5/24—Securing arrangements for bits or teeth or cutting inserts adjustable
    • B23C5/2489—Securing arrangements for bits or teeth or cutting inserts adjustable where the adjustment is made by changing the inclination of the inserts
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C213/00—Preparation of compounds containing amino and hydroxy, amino and etherified hydroxy or amino and esterified hydroxy groups bound to the same carbon skeleton
    • C07C213/08—Preparation of compounds containing amino and hydroxy, amino and etherified hydroxy or amino and esterified hydroxy groups bound to the same carbon skeleton by reactions not involving the formation of amino groups, hydroxy groups or etherified or esterified hydroxy groups
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C213/00—Preparation of compounds containing amino and hydroxy, amino and etherified hydroxy or amino and esterified hydroxy groups bound to the same carbon skeleton
    • C07C213/10—Separation; Purification; Stabilisation; Use of additives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2260/00—Details of constructional elements
    • B23B2260/056—Differential screw threads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C2226/00—Materials of tools or workpieces not comprising a metal
    • B23C2226/12—Boron nitride
    • B23C2226/125—Boron nitride cubic [CBN]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C2226/00—Materials of tools or workpieces not comprising a metal
    • B23C2226/31—Diamond
    • B23C2226/315—Diamond polycrystalline [PCD]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C2250/00—Compensating adverse effects during milling
    • B23C2250/16—Damping vibrations
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07B—GENERAL METHODS OF ORGANIC CHEMISTRY; APPARATUS THEREFOR
    • C07B2200/00—Indexing scheme relating to specific properties of organic compounds
    • C07B2200/07—Optical isomers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T407/00—Cutters, for shaping
    • Y10T407/22—Cutters, for shaping including holder having seat for inserted tool
    • Y10T407/2222—Tool adjustable relative to holder

Definitions

  • the embodiments herein generally relate to the field of machining process, more specifically, it relates to a novel rigid universal cylindrical cartridge for holding system, which can control in microns axially and radially in all type of machining process.
  • Milling cutters and boring bars are tools typically used in milling machines and metalworking, wherein the milling cutters used for cutting work pieces and boring bars used to create a slot or asymmetrical hole or channel, or to create a perfect circular hole.
  • the milling cutters generally comprise a cylindrical cutter body having a spindle on one side for attachment to a source of rotary power, and a plurality of cutting inserts mounted around the outer side of the body for cutting a work piece.
  • the cutting inserts are typically clamped or screw-mounted into pockets present around the periphery of the cutter body. Since the pockets have to conform in part to the shape of the inserts to adequately stabilize them during a cutting operation, such milling cutters are limited in the number of types of inserts that they can use.
  • cartridge tools are affixed to the periphery of a boring bar by screws, clamps, or wedges and which focus on the tolerance problem by affording adjustment, wherein the cartridges provide adjustment for cutting inserts.
  • both milling and turning utilizes ISO inserts, and also brazed type inserts such as tungsten carbide cutting tool inserts, PCD (Polycrystalline Diamond) inserts, CBN (Cubic boron nitride) inserts are used for cutting edges and held on holder by cartridges for clamping on the main body.
  • PCD Polycrystalline Diamond
  • CBN Cubic boron nitride
  • the brazed type milling cutters are directly brazed on the body of milling cutter or boring, wherein the adjustment may not be possible for run out or size on individual cutting edges.
  • square/rectangular shaped cartridges are designed and used at present by many manufacturers with the design holding on the body of cutter by providing rectangular hole in the center of cartridges and clamping it by bold to hold with the cutter, and also height adjustment by a screw in the back side of the cartridge.
  • FIG. 1.1 A conventional milling cartridge 100 a is shown in FIG. 1.1 , where in the milling cartridge includes a body 101 in rectangular shape having an elliptical bolting hole 102 for locking the cartridge using a bolt and to accommodate axial movement of the cartridges, a height setting screw 103 for adjustment and an insert 104 .
  • FIG. 1.2 Another prior art cartridge 100 b is shown in FIG. 1.2 , which is specially developed for PCD and CBN application, and its body 101 is also in rectangular shape, locked by a bolt 105 and locked in central elliptical shaped hole 102 in the cartridge 100 b. Further, the cartridge 100 b is adjusted by using a height setting screw 105 , wherein the adjustment would be possible only in one direction for the height of cartridges and hence the cutting edge.
  • the locking bolt hole is provided in oval shape to accommodate the height adjustment of cartridges. Moreover, the bolt hole is provided in the center of the cartridge which may weaken the cartridge. Therefore, the design of cartridge size becomes larger and can add limitation of reducing the size of the cartridges.
  • the shape of the cartridges is either square or rectangular in shape, which may lead to difficulty in achieving the accuracy in cartridge size, and also the location pocket of the cartridges can be finished only by milling operation, which is very difficult to get the accuracy from center of the cutter.
  • the main object of the present invention is to provide a simple rigid and accurate cylindrical cartridge which can used for universal holding system, particularly in milling cutters and boring bars.
  • Another object of the present invention is to provide a cartridge in cylindrical shape for easy manufacture and also to maintain the size of cartridge as needed.
  • Yet another object of the present invention is to provide a cartridge which can move in forward and backward direction, thus face run out can be controlled very close to 3 micron.
  • Still another object of the present invention is to provide a cartridge which can able to control the positioning accuracy within 10 micron thus run out on multiple cutting edges on the cutter can be controlled up to 10 micron.
  • Another object of the present invention is to provide a cartridge which can be compact thus to increase the number of cutting edges in cartridge system.
  • Another object of the present invention is to provide a cartridge to increase the speed and feed of cutting tools to reduce the cycle time and with high quality of surface finish and accuracy.
  • Another object of the present invention is to provide a cartridge system for easy, accurate in assembling and setting of the cartridges.
  • Another object of the present invention to provide a marking on cutter body measuring/controlling the movement distance of cartridges accurately.
  • an embodiment herein discloses a rigid cartridge for multiple and universal application of all machining processes.
  • the rigid cartridge includes a cylindrical body, a guiding & locating body connected to bottom side of cylindrical body, and a combination screw having a left hand [LH] thread and a right hand [RH] thread, wherein the cylindrical body includes a flat for locking the cartridge with the cutter body by using a locking screw, wherein the combination screw is connected to the bottom end of the guiding & locating body.
  • the diameter of the guiding & locating body is provided lesser than the cylindrical body for guiding the cartridge axially on accurate concentric pocket made in the body within 20 micron clearances.
  • the guiding & locating body can be made in any shape including but not limited to cubical, hexagonal, and triangular.
  • a central hole is provided in the combination screw for rotating the screw in a desired direction.
  • the combination screw is provided with center hole between LH thread and RH thread.
  • the LH thread is provided in cartridge side and RH thread is provided in cutter body side or vice versa.
  • a slot or an approach hole is provided for enabling to rotate the combination screw in clockwise or anti-clockwise direction to move the cartridge in forward and/or backward direction.
  • a threaded locking hole is provided in the cutter body for locking the cartridge with the cutter body by using a grub screw.
  • the bottom surface of the slot can be provided with marking in degrees for measuring/controlling the movement distance of cartridges accurately.
  • FIGS. 1.1 and 1 . 2 illustrates a conventional cartridge used in milling cutters.
  • FIG. 2 illustrates a cross section view of a cartridge placed in milling cutter, according to an embodiment herein;
  • FIG. 3 illustrates a perspective view of plurality of cartridges locked in pockets of milling cutter, according to an embodiment herein;
  • FIG. 4 illustrates a front view of arrangement provided in cutter body for height adjustment of cartridges, according to an embodiment herein;
  • FIGS. 2 through 4 where similar reference characters denote corresponding features consistently throughout the figures, there are shown preferred embodiments.
  • the cartridge 200 includes a cylindrical body 201 , a guiding & locating body 204 connected to bottom side of cylindrical body 201 , and a combination screw 205 having a left hand [LH] thread 207 and a right hand [RH] thread 208 , wherein the cylindrical body 201 includes a flat 203 for locking the cartridge 200 with the cutter 209 by using a locking screw [not shown].
  • the combination screw 205 is connected to the bottom end of the guiding & locating body 204 .
  • the cartridge 200 is provided with an arrangement for holding an insert 202 which can cut the work pieces and/or bore.
  • the guiding & locating body 204 can be made in any shape including but not limited to cubical, hexagonal, and triangular.
  • the diameter of the guiding & locating body 204 is provided lesser than the cylindrical body 201 for guiding the cartridge 200 axially on accurate concentric pocket made in the body 209 within 20 micron clearances. Further, the guiding & locating body 204 can secure the positional accuracy of the cutting edge as it is made parallel to the cutting edge, control the center height of the cutting edge and restrict the rotation of the cartridge while in operation.
  • a central hole 206 is provided in the combination screw 205 for rotating the screw 205 in a desired direction.
  • a spanner holding portion [not shown] can be provided in the combination screw 205 for rotating the screw 205 .
  • the central hole 206 or spanner holding portion [not shown] can be provided in side or bottom portion of the combination screw 205 .
  • the combination screw 205 is provided with center hole 206 between LH thread 207 and RH thread 208 .
  • the LH thread 207 is provided in cartridge 200 side and RH thread 208 is provided in cutter body 209 side or vice versa.
  • the combination screw 205 can be rotated in clockwise or anti-clockwise rotation, which enables to move the cartridge 200 in forward and backward direction. Further, the combination screw 205 can maintain the positional accuracy of cartridges and can lock the cartridge rigidly.
  • a perspective view 300 of plurality of cartridges 200 locked in pockets of milling cutter 209 is illustrated in FIG. 3 .
  • a slot 210 is provided on the cutter body 209 or boring bar [not shown] for enabling to rotate the combination screw in clockwise and anti-clockwise direction.
  • the cartridge 200 body is provided in cylindrical shape, the locking surface size can be controlled up to h6, tolerances and locating hole can be maintained H6 tolerances. Radial run out depends on positional accuracy of the threaded locking hole 301 which can be very easily achieved by reaming or gig boring of cartridge bore of the cutter/boring bar. Therefore, the radial run out can be controlled precisely within 10 microns.
  • FIG. 4 a front views 400 of arrangement provided in cutter body 209 for height adjustment of cartridges 200 is illustrated according to an embodiment.
  • the slot 210 provided in the cutter body 209 enables to rotate the combinational screw 205 with the help of center hole 206 provided in the screw 205 .
  • the bottom surface of the slot 210 can be provided with marking in degrees [not shown] for measuring/controlling the movement distance of cartridges 200 , according to an embodiment. Therefore, movement of the cartridge can be controlled with respect to marking between the holes or marking on every 90 deg. on periphery of LH and RH screw, which can be accurately noted and also controlled for micro movement of the cutting edges. Further, the axial movement of the cartridge can be controlled within 2 microns.
  • the cartridge 200 is assembled outside the cutter body 209 .
  • the cartridge 200 is connected with the combinational screw 205 with 3 ⁇ 4 length of screw inside the cartridge 200 .
  • the cartridge 200 is inserted in the pocket 302 and assembled by rotating the screw 205 in clockwise direction. Care needs to be taken that the cutting edge of the cartridge 200 is facing outwards.
  • the cartridge 200 is locked securely by a locking screw [not shown] inserted through the locking 301 into the flat 203 provided in cartridge 200 .
  • the combination screw 205 is slightly tightened to maintain the proper tension of cartridge 200 with the cutter body 209 .
  • cartridge can be locked securely. Accordingly, the combination screw 205 is tightened till the cartridge face is butting properly with the face without any gap. Thereafter, the locking screw is tightened to secure the cartridge in position.
  • This can be used for modular locking and series connection of multiple holders in long boring bars.
  • a main advantage of the present invention is the cartridges are designed in cylindrical in shape hence it can be designed with very small size.
  • the cartridges can be designed to accommodate in larger number of cartridges for a particular diameter. Accordingly, it would lead to increase the feed rate and can be achieved drastic reduction in cycle time of particular operation and increase in productivity.
  • the cartridges can be used for multiple applications including milling cutter, boring bars, guide pad type reamers and modular holding.
  • the invented cartridge can be used instead of cutting blade for achieve the same accuracy and finish.
  • the cartridges can be made in steel, heavy material, and also directly in carbide with the provision of threaded hole by brazing steel material. Accordingly, it can improve the rigidity of the milling cutters and borings bars.
  • the invented cartridges can be used for multiple and universal application of all machining processes including milling, boring, reaming, modular holders, extension bars as per the tool design and application.
  • the cartridges are simple in design, rigid, and are also possible to adjust in micron level with close control on run out and can be used universally in multiple applications which can improve the quality as well as the cost of manufacturing processes which is the need of today's manufacturing industry.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)
  • Milling Processes (AREA)
US14/115,876 2011-11-09 2012-11-15 Novel rigid universal cartridge for holding system Abandoned US20140234039A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
IN3171/MUM/2011 2011-11-09
IN4699CH2012 IN2012CH04699A (fr) 2012-11-09 2012-11-09
PCT/IN2012/000750 WO2014072988A1 (fr) 2012-11-09 2012-11-15 Nouvelle cartouche universelle rigide pour système de support

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/IN2012/000750 A-371-Of-International WO2014072988A1 (fr) 2011-11-09 2012-11-15 Nouvelle cartouche universelle rigide pour système de support

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US15/008,485 Continuation US9770770B2 (en) 2012-11-09 2016-01-28 Rigid universal cartridge for holding system

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US20140234039A1 true US20140234039A1 (en) 2014-08-21

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US14/115,876 Abandoned US20140234039A1 (en) 2011-11-09 2012-11-15 Novel rigid universal cartridge for holding system
US15/008,485 Expired - Fee Related US9770770B2 (en) 2012-11-09 2016-01-28 Rigid universal cartridge for holding system

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IN (1) IN2012CH04699A (fr)
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US20160089730A1 (en) * 2014-09-30 2016-03-31 Sandvik Intellectual Property Ab Mechanism for enhanced, bi-directional fine adjustment of cutting insert cartridges in machine tools
US11458553B2 (en) * 2017-10-10 2022-10-04 Tungaloy Corporation Cartridge and milling tool

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US9782832B1 (en) * 2014-03-31 2017-10-10 DCT/Precision, L.L.C. Boring tool
CA2968111A1 (fr) * 2014-11-12 2016-05-19 Vijay Kumar MADA Nouveau systeme rigide de support modulaire a compensation axiale et radiale
US10071438B2 (en) * 2015-06-02 2018-09-11 The Boeing Company Methods of forming shanks
KR102006376B1 (ko) * 2015-09-25 2019-10-01 주식회사 엘지화학 절삭 바이트, 및 이를 포함하는 절삭 장치
EP3330025B1 (fr) * 2016-11-30 2023-08-16 Seco Tools Ab Ensemble de coupe ayant plusieurs outils de fraisage

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Publication number Priority date Publication date Assignee Title
US20160089730A1 (en) * 2014-09-30 2016-03-31 Sandvik Intellectual Property Ab Mechanism for enhanced, bi-directional fine adjustment of cutting insert cartridges in machine tools
JP2016068254A (ja) * 2014-09-30 2016-05-09 サンドビック インテレクチュアル プロパティー アクティエボラーグ 機械加工具の切削インサートカートリッジの双方向微調整を改善するための機構
US9862040B2 (en) * 2014-09-30 2018-01-09 Sandvik Intellectual Property Ab Mechanism for enhanced, bi-directional fine adjustment of cutting insert cartridges in machine tools
US11458553B2 (en) * 2017-10-10 2022-10-04 Tungaloy Corporation Cartridge and milling tool

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US20160136740A1 (en) 2016-05-19
WO2014072988A1 (fr) 2014-05-15
IN2012CH04699A (fr) 2015-06-19
US9770770B2 (en) 2017-09-26

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