EP0839606A2 - Honwerkzeug und hochpräzise Feinstbearbeitungsverfahren unter Verwendung dieses Honwerkzeuges - Google Patents

Honwerkzeug und hochpräzise Feinstbearbeitungsverfahren unter Verwendung dieses Honwerkzeuges Download PDF

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Publication number
EP0839606A2
EP0839606A2 EP98200011A EP98200011A EP0839606A2 EP 0839606 A2 EP0839606 A2 EP 0839606A2 EP 98200011 A EP98200011 A EP 98200011A EP 98200011 A EP98200011 A EP 98200011A EP 0839606 A2 EP0839606 A2 EP 0839606A2
Authority
EP
European Patent Office
Prior art keywords
section
honing tool
grinding section
work
honing
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.)
Ceased
Application number
EP98200011A
Other languages
English (en)
French (fr)
Other versions
EP0839606A3 (de
Inventor
Katsutoshi Higashikawa
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.)
Toyo Co Ltd
Original Assignee
Toyo Co Ltd
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 Toyo Co Ltd filed Critical Toyo Co Ltd
Priority to EP98200011A priority Critical patent/EP0839606A3/de
Priority claimed from EP90911698A external-priority patent/EP0610498B1/de
Publication of EP0839606A2 publication Critical patent/EP0839606A2/de
Publication of EP0839606A3 publication Critical patent/EP0839606A3/de
Ceased legal-status Critical Current

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Classifications

    • 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
    • B24B33/00—Honing machines or devices; Accessories therefor
    • B24B33/08—Honing tools
    • B24B33/083—Honing tools with different sets of honing stones

Definitions

  • the present invention relates to a honing tool for carrying out honing working of a work with high precision and super precision finishing method using the same.
  • FIG. 1 One example of such a honing tool is shown in Fig. 1.
  • the honing tool 61 comprises a hollow mandrel 62, and a plurality of grindstones 66 being provided on the outer circumference of the top end portion 63 of the mandrel 62 and movable in the radial direction.
  • the grindstones 66 are rotated while being pushed to the outside through a bed plate 67 by moving a taper part 65 of a mandrel shaft 64 up and down, and are reciprocated up and down repeatedly by the distance corresponding to the working area thereby the grinding working of a prescribed diameter is carried out.
  • some honing tool is provided with two sets of grinding sections in order to raise the working efficiency, and can perform rough machining and finish machining continuously.
  • Fig. 3 shows a honing tool 71 in such constitution.
  • the honing tool 71 is constituted by a cylindrical body 72, a main machining grinding section 73 being installed at the top end portion of the body 72 and comprising a rough grindstone, and a finish grinding section 74 being installed at the center portion and comprising a finish grindstone.
  • a tapered adjusting rod 75 is fitted to the inside of the main machining grinding section 73 so that the main machining diameter can be adjusted
  • a tapered adjusting rod 77 is fitted to the inside of the finish grinding section 74 so that the finish grinding diameter can be adjusted.
  • the honing tool 71 with the main machining diameter and the finish machining diameter being adjusted is rotated and moved by a distance corresponding to the working area thereby the grinding finishing of the prescribed diameter is carried out.
  • a honing tool and super precision finishing method using the same according to the present invention are constituted as follows.
  • the honing tool according to the present invention is one having a plurality of grinding sections in the vertical direction of the body, comprising a pilot section being installed at the top end portion of the body and capable of being fitted to a work; a rough grinding section being installed adjacent to the upper portion of the pilot section and capable of being elastically deformed in the radial direction; a finish grinding section being installed adjacent to the upper portion of the rough grinding section and capable of being elastically deformed in the radial direction; a correction section being installed adjacent to the upper portion of the finish grinding section and formed in diameter slightly less than the machining diameter of the finish grinding section and formed longer than the overall length of the work in the working axis direction; a taper hole being bored at least on the inside of the rough grinding section and the finish grinding section and opened widening towards the top end of the body; and an adjusting section being formed so as to be fitted to the taper hole and having at least two taper parts and capable of adjusting the machining diameter of the rough grinding section and the finish grinding section.
  • the super precision finishing method uses the honing tool, and comprises step of sending the honing tool at rapid speed while being reciprocated slightly over a distance corresponding to the working length of the work; step of fitting the pilot section to the work and supporting the top end portion of the honing tool rotatably; step of machining the work by the rough grinding section and the finish grinding section; and step of pushing the correction section to the circumferential surface of the work and performing the correction finishing of the straightness of the work.
  • a honing tool 1 shown in Fig. 4 and Fig. 5 is mainly constituted by a body 2 provided with a pilot section 5, a rough grinding section 7, a finish grinding section 10, a correction section 13 and a taper hole 17, a joint section 3 of universal joint type installed on the upper end portion of the body 2, and an adjustment section 20 capable of being fitted in the taper hole 17.
  • the body 2 is constituted by a rod member, and its outer circumference is provided with a plurality of oil grooves 15 continuing from the pilot section 5 to the correction section 13.
  • the pilot section 5 is installed on the outer circumference at the top end portion of the body, and is constituted in the divided state in the circumferential direction by the oil grooves 15 in the embodiment.
  • the outer diameter of the pilot section 5 is made slightly smaller than the hole diameter of the work before the grinding finishing.
  • the rough grinding section 7 is installed adjacent to the upper portion of the pilot body 5, and is divided in the circumferential direction by the oil grooves 15.
  • grains with rough grading are electrodeposited so as to provide large grinding amount, and its outer diameter is formed larger than the outer diameter of the pilot section 5 and slightly smaller than that of the finishing diameter of the work.
  • the oil grooves of the rough grinding section are provided with a plurality of slits 8 extending in the longitudinal direction and penetrating the taper hole 17.
  • the finish grinding section 10 is installed adjacent to the upper portion of the rough grinding section 7 and divided in the circumferential direction by the oil grooves 15. In the final grinding section 10, grains with fine grading suitable for the honing finishing are equal to the finish diameter of the work.
  • the rough grinding section 7 and the finish grinding section 10 may be formed also in that a grindstone of plate shape having grading suitable for each grinding section is stuck thereon.
  • the oil grooves 15 of the finish grinding section 10 are provided with a plurality of slits 11 extending in the longitudinal direction and penetrating the taper hole 17.
  • the slits 11 are provided on oil grooves adjacent to the oil grooves 15 having the slits 8 formed thereon, and the slits 11 and the slits 8 are formed to be positioned alternately with each other in the circumferential direction of the body 2.
  • the slits 8 and 11 are those to promote the elastic deformation of the rough grinding section 7 and the finish grinding section 10 in the radial direction respectively.
  • a correction section 13 is installed adjacent to the upper portion of the finish grinding section 10 and divided in the circumferential direction by the oil grooves 15. Outer diameter of the correction section 13 is formed slightly smaller than the finish diameter of the work, and it is formed longer than the overall length of the work in the working axis direction.
  • the taper hole 17 is bored at the inside of the rough grinding section 7 and the finish grinding section 10 having the axial line commonly, and it is opened widening towards the top end of the body 2 (lower side of Fig. 4).
  • An adjustment section 20 is constituted by a rod member capable of being fitted to the taper hole 17, and has a first taper portion 21 and a second taper portion 22 projecting in the radial direction in the embodiment and a thread portion 23 is formed in axial line shape.
  • the first taper portion 21 abuts on the wall surface of the taper hole 17 at the inside of the rough grinding section 7, and the second taper portion 22 abuts on the wall surface of the taper hole 17 at the inside of the finish grinding section 10, and both are constituted having the taper in similar manner to the taper hole 17 respectively.
  • An adjustment bolt 25 is threadedly engaged with the thread portion 23 of the adjustment section 20, and when the adjustment section 20 is strongly pushed into the taper hole 17, each of the first and second taper portions 21, 22 pushes the wall surface of the taper hole 17 and the rough grinding section 7 and the finish grinding section 10 are subjected to the elastic deformation and each machining diameter can be enlarged and adjusted simultaneously.
  • the adjustment bolt 25 is pulled from that state, thereby the adjustment section 20 moves the taper hole 17 to the open side. Thereby the pushing pressure of the wall surface of the taper hole 17 by the first and second taper portions 21, 22 is decreased, and the rough grinding section 7 and the finish grinding section 10 are restored in the diameter reducing direction by elasticity of the body 2 itself constituting the base part and each machining diameter is decreased simultaneously.
  • the joint section 3 is mounted on the main shaft of the honing machine thereby the honing working is carried out.
  • the grinding section is constituted in two stages, the rough grinding section 7 and the finish grinding section 10, it may be constituted in three or more stages further including an intermediate finish grinding section.
  • the honing machine 30 comprises a column 31, a headstock 32 being supported by the column 31 and movable up and down, a spindle head 33 being supported by the headstock 32 and movable up and down, a main spindle 40 being rotatably installed in the spindle head 33 and detachably mounting a honing tool 1 at the bottom end portion, a driving gear 45 for driving the main spindle 40 and rotating the honing tool 1, a large reciprocating device 35 for reciprocating the spindle head 33 in the axial line direction of the main spindle 40 and moving the honing tool 1 up and down throughout a distance corresponding to a working length L of a work W (overall length of a hole Wa in the axial direction), and a small reciprocating device 50 for carrying out up-and-down motion at rapid speed, the distance corresponding to the working length L being made the upper limit of amplitude, and for reciprocating the honing tool 1 up and down a small amount through the main spindle 40, where the large or small
  • the driving gear 45 of the honing machine 30 is constituted to drive a pulley 46 being spline-fitted to a spline 41 at the top end portion of the main spindle 40 by a rotary drive source 47.
  • the large reciprocating device 35 comprises an arm 34 projected from the spindle head 33 and having a female screw portion, a ball screw 36 being pivotally supported by the headstock 32 and threadedly engaged with the female screw portion of the arm 34, and a drive source 37 rotating and driving the ball screw 36.
  • the small reciprocating device 50 comprises a circular ring washer 51 having a flat surface orthogonal to the axial line of the main spindle 40 and projected at the inside of the spindle head 33, a pin 52 fixed orthogonal to the main spindle 40, an eccentric tire 54 being pivotally supported on both ends of the pin 52 and rollable on the circular ring washer 51, and a spring 55 for biasing the main spindle 40 in one direction through a flange portion 42 of the main spindle 40.
  • the eccentric tire 54 has cross section in contraction shape and is pivotally supported by the pin 52 through a ball bearing 53.
  • the eccentric tire 54 is rolled on the circular ring washer 51 accompanying with rotation of the main spindle 40.
  • the main spindle 40 is formed to be reciprocated up and down little by amplitude being two times of the eccentricity amount "a" between the axial line of the pin 52 and the axial line of the eccentric tire 54 with respect to the spindle head 33 per one revolution.
  • the small reciprocating device 50 may be constituted in that the circular ring washer 51 is formed in one cam shape and the eccentric tire 54 is replaced by a concentric tire. It may be also constituted in that the main spindle 40 is reciprocated up and down little by a crank shaft mounted on the rotational drive source.
  • diameter of the pilot section 5, the rough grinding section 7, the finish grinding section 10 and the correction section 13 of the honing tool 1 is set corresponding to the diameter of the hole Wa of the work W.
  • the machining diameter of the rough grinding section 7 and the finish grinding section 10 is adjusted by the fitting degree of the adjustment section 20 to the taper hole 17.
  • the honing tool 1 is mounted on the main spindle 40 of the honing machine 30.
  • the axial line of the hole Wa is made coincident with the axial line of the main spindle 40, and it is fixed to a table chuck 57 of the honing machine 30 below the honing tool 1.
  • the main spindle 40 is rotated and the honing tool 1 is rotated at a prescribed rotational speed.
  • the small reciprocating device 50 operates and the main spindle 40 is moved up and down with the amplitude 2a at period corresponding to the rotational speed, and accompanying with this, the honing tool 1 is reciprocated up and down little.
  • the motion of the main spindle 40 is forward motion of the large reciprocating motion, and while the honing tool 1 is rotated, the small reciprocating motion and the large reciprocating motion are superposed, and the honing tool 1 is moved downward into the hole Wa.
  • Fig. 13 is a curved line diagram explaining locus of the outer circumference of the honing tool 1 which is moved downward while being reciprocated little.
  • the honing tool 1 generates sine curve of the amplitude 2a up and down per one revolution, and is moved downward by the moving amount l by means of the large reciprocating device 35.
  • One sine curve being one round of the inner circumference of the hole Wa continues to next sine curve, and the sine curve is generated in sequence and moved downward in the arrow Y direction.
  • the pilot section 5 of the honing tool 1 is first moved in the hole Wa, and it is fitted to the hole Wa and rotates and supports the honing tool 1. Thereby advance of the honing tool 1 is guided straight and lateral rolling thereof is prevented.
  • the rough grinding section 7 is moved in the hole Wa, and while the small reciprocating motion at the rapid speed and short amplitude is repeated, the downward motion at slow speed is continued by the large reciprocating device 35. Then the rough grinding section 7 carries out the heavy machining and forms the grounding for the finishing.
  • the finish grinding section 10 is moved in the hole Wa and carries out the finish grinding working while repeating the small reciprocating motion. Further if the downward motion advances, the correction section 13 is moved in the hole Wa.
  • the correction section 13 is opposite to the hole Wa machined to the prescribed finish diameter by the finish grinding section 10 throughout the overall length of the working length L.
  • the portion is pushed by the correction section 13 and is made flat thereby the straight degree of the hole Wa is improved.
  • the large reciprocating device 35 is reversely rotated and driven and the honing tool 1 is raised and pulled out of the hole Wa.
  • the honing tool 1 is moved throughout the overall length of the working length L while repeating the small reciprocating motion, and the heavy machining and the finish machining and correction of the straight degree are carried out by the downward motion of one time thereby the work W can be finished with accuracy of super precision.
  • the honing tool of the present invention since the large reciprocating motion and the small reciprocating motion are superposed on the honing tool, and the heavy machining by the rough grinding section and the finish machining by the finish grinding section are carried out continuously, the honing working with high precision can be carried out. Moreover, as the honing finishing can be carried out by only one passing of the honing tool along the work, the working efficiency can be significantly improved.
  • the honing tool can be prevented from being rolled and can be inserted straight by the fitting between the pilot section and the work, the working accuracy can be improved and the edge can be prevented from being unsharpened.
  • the honing finishing can be carried out with high straight degree.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
EP98200011A 1990-08-04 1990-08-04 Honwerkzeug und hochpräzise Feinstbearbeitungsverfahren unter Verwendung dieses Honwerkzeuges Ceased EP0839606A3 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP98200011A EP0839606A3 (de) 1990-08-04 1990-08-04 Honwerkzeug und hochpräzise Feinstbearbeitungsverfahren unter Verwendung dieses Honwerkzeuges

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP98200011A EP0839606A3 (de) 1990-08-04 1990-08-04 Honwerkzeug und hochpräzise Feinstbearbeitungsverfahren unter Verwendung dieses Honwerkzeuges
EP90911698A EP0610498B1 (de) 1990-08-04 1990-08-04 Honwerkzeug und dieses honwerkzeug verwendendes hochgenaues feinstbearbeitungsverfahren

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP90911698A Division EP0610498B1 (de) 1990-08-04 1990-08-04 Honwerkzeug und dieses honwerkzeug verwendendes hochgenaues feinstbearbeitungsverfahren

Publications (2)

Publication Number Publication Date
EP0839606A2 true EP0839606A2 (de) 1998-05-06
EP0839606A3 EP0839606A3 (de) 2000-09-27

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EP98200011A Ceased EP0839606A3 (de) 1990-08-04 1990-08-04 Honwerkzeug und hochpräzise Feinstbearbeitungsverfahren unter Verwendung dieses Honwerkzeuges

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6721370B1 (en) 1998-10-21 2004-04-13 Nec Corporation Phase correction circuit for radio communication apparatus
CN106623902A (zh) * 2016-12-26 2017-05-10 银川市恒益达机械有限公司 含钛元素的珩磨油石、制备方法及其应用
CN116833684A (zh) * 2023-07-13 2023-10-03 四川川润液压润滑设备有限公司 一种精密滑枕的制备工艺以及工装

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5511756A (en) * 1978-07-12 1980-01-26 Diesel Kiki Co Ltd Honing and hone
US4223485A (en) * 1977-11-03 1980-09-23 S.A. Automobiles Citroen Lapping tools
JPS61288971A (ja) * 1985-06-12 1986-12-19 Toyo:Kk 精密仕上ホ−ニング盤
DE4439381A1 (de) * 1994-11-04 1996-05-09 Nagel Masch Werkzeug Honwerkzeug

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4223485A (en) * 1977-11-03 1980-09-23 S.A. Automobiles Citroen Lapping tools
JPS5511756A (en) * 1978-07-12 1980-01-26 Diesel Kiki Co Ltd Honing and hone
JPS61288971A (ja) * 1985-06-12 1986-12-19 Toyo:Kk 精密仕上ホ−ニング盤
DE4439381A1 (de) * 1994-11-04 1996-05-09 Nagel Masch Werkzeug Honwerkzeug

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 004, no. 041 (M-005), 29 March 1980 (1980-03-29) & JP 55 011756 A (DIESEL KIKI CO LTD), 26 January 1980 (1980-01-26) *
PATENT ABSTRACTS OF JAPAN vol. 011, no. 157 (M-590), 21 May 1987 (1987-05-21) & JP 61 288971 A (TOYO:KK), 19 December 1986 (1986-12-19) *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6721370B1 (en) 1998-10-21 2004-04-13 Nec Corporation Phase correction circuit for radio communication apparatus
CN106623902A (zh) * 2016-12-26 2017-05-10 银川市恒益达机械有限公司 含钛元素的珩磨油石、制备方法及其应用
CN106623902B (zh) * 2016-12-26 2019-10-25 银川市恒益达机械有限公司 含钛元素的珩磨油石的制备方法及其应用
CN116833684A (zh) * 2023-07-13 2023-10-03 四川川润液压润滑设备有限公司 一种精密滑枕的制备工艺以及工装

Also Published As

Publication number Publication date
EP0839606A3 (de) 2000-09-27

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