WO1998012015A1 - Procede et dispositif pour couper/separer un segment de piston - Google Patents

Procede et dispositif pour couper/separer un segment de piston Download PDF

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Publication number
WO1998012015A1
WO1998012015A1 PCT/JP1997/003345 JP9703345W WO9812015A1 WO 1998012015 A1 WO1998012015 A1 WO 1998012015A1 JP 9703345 W JP9703345 W JP 9703345W WO 9812015 A1 WO9812015 A1 WO 9812015A1
Authority
WO
WIPO (PCT)
Prior art keywords
axis
cutting
work
cut
piston ring
Prior art date
Application number
PCT/JP1997/003345
Other languages
English (en)
Japanese (ja)
Inventor
Masahiro Shoji
Original Assignee
Komatsu Machinery Corp.
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 Komatsu Machinery Corp. filed Critical Komatsu Machinery Corp.
Publication of WO1998012015A1 publication Critical patent/WO1998012015A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D45/00—Sawing machines or sawing devices with circular saw blades or with friction saw discs
    • B23D45/02—Sawing machines or sawing devices with circular saw blades or with friction saw discs with a circular saw blade or the stock mounted on a carriage
    • B23D45/021—Sawing machines or sawing devices with circular saw blades or with friction saw discs with a circular saw blade or the stock mounted on a carriage with the saw blade mounted on a carriage
    • B23D45/022—Sawing machines or sawing devices with circular saw blades or with friction saw discs with a circular saw blade or the stock mounted on a carriage with the saw blade mounted on a carriage the carriage performing a vertical movement only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D45/00—Sawing machines or sawing devices with circular saw blades or with friction saw discs
    • B23D45/003—Sawing machines or sawing devices with circular saw blades or with friction saw discs for particular purposes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D47/00—Sawing machines or sawing devices working with circular saw blades, characterised only by constructional features of particular parts
    • B23D47/04—Sawing machines or sawing devices working with circular saw blades, characterised only by constructional features of particular parts of devices for feeding, positioning, clamping, or rotating work
    • B23D47/042—Sawing machines or sawing devices working with circular saw blades, characterised only by constructional features of particular parts of devices for feeding, positioning, clamping, or rotating work for conveying work to, or discharging work from, the machine

Definitions

  • the present invention relates to a method and a device for cutting a piston ring.
  • the piston ring used in conventional engines, etc. is manufactured by cutting the inner and outer peripheral surfaces of a ring-shaped work using a piston ring processing device, and then cutting the work at two locations.
  • a processing method for producing a perfect circle piston ring by reducing the diameter of the obtained peak is generally adopted.
  • a device as shown in FIG. 1 is used as a cutting device for cutting a workpiece on which inner and outer peripheral surfaces have been processed.
  • the conventional cutting device has two cutters c that can be manually moved in the a, b, and // 3 directions, and the cutter c is used to cut the workpiece d. By cutting the two parts at the same time, a piston ring that becomes a perfect circle when the diameter is reduced is obtained.
  • the present invention has been made to improve such a conventional problem, and provides a cutting method and a cutting device for a piston ring, which automates a cutting process, and provides a setup time and a cutting process.
  • the aim is to improve productivity by significantly reducing the time required for the process. Disclosure of the invention
  • the invention according to claim 1 is characterized in that both ends of the work are eccentric with respect to the ⁇ axis parallel to the axis, with the center of the cut of the work laminated in the axial direction.
  • the upper work support means and the lower work support means clamp the workpiece from the vertical direction.
  • rotate The cutter is raised in the Z-axis direction parallel to the B-axis, and the work is cut from one end by the cut, and after the cut, the workpiece is again moved to the B-axis.
  • the rotating cutter is moved in the Z-axis direction again to cut the next cutting position. Things.
  • the invention according to claim 2 is characterized in that both ends of the work are eccentric with respect to the B axis parallel to the axis and the center of the cut of the work laminated in the axial direction.
  • An upper work support means and a lower work support means that clamp from the vertical direction, and a work is indexed and rotated around the B axis to determine the cutting position of the work.
  • a sliding means provided movably in the Z-axis direction parallel to the B-axis, and movable up and down in the Z-axis direction by the Z-axis motor; and
  • the spindle head is mounted on the spindle head, which is provided on the top and can move in and out of the workpiece by the X-axis motor, and the spindle head is mounted on the spindle head. It consists of a cutting tool that rotates and cuts the work.
  • the axis movement for offsetting the cutter is not required.
  • the control system for controlling each axis can be simplified.
  • the invention described in claim 3 is one in which the X-axis motor and the Z-axis motor are constituted by servomotors.
  • the invention according to claim 4 controls the X-axis motor 13, the Z-axis motor 5, and the B-axis indexing means 20 based on machining data input in advance to the NC device, and In this way, the multiple locations of step 24 are cut and cut by a single cut 16.
  • FIG. 1 is an explanatory view showing a conventional piston ring cutting device.
  • FIG. 2 is a front view showing a bisto ring cutting device according to an embodiment of the present invention.
  • FIG. 3 is a plan view showing a biscuit ring cutting device according to an embodiment of the present invention.
  • FIG. 4 is a detailed view of the vicinity of the Z-axis motor of the biscuit splitting device according to the embodiment of the present invention.
  • FIG. 5 is a detailed view around the X-axis motor of the piston ring splitting device according to the embodiment of the present invention.
  • FIG. 6 is a detailed view of the vicinity of the spindle motor of the piston ring splitting device according to the embodiment of the present invention.
  • FIG. 7A is an enlarged view of an upper work supporting means of the cutting device for a piston ring according to the embodiment of the present invention.
  • FIG. 7B is an arrow view from the direction of arrow WB in FIG. 7A.
  • FIG. 8A A piston ring according to an embodiment of the present invention. It is an enlarged view of the lower work support means of the cutting device.
  • FIG. 8B is an arrow view from the arrow HB direction in FIG. 8A.
  • Fig. 9 is an explanatory view showing dimensions of each part of a piston ring to be cut.
  • FIG. 10A and FIG. 10B are explanatory diagrams showing a problem in the case where the center is aligned with the B-axis and the division is performed.
  • FIG. 11A and FIG. 11B are explanatory views showing a method of splitting a piston ring according to an embodiment of the present invention.
  • FIG. 12A and FIG. 12B are process diagrams showing a method of cutting a piston ring according to an embodiment of the present invention.
  • BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described with reference to the drawings shown in FIG.
  • Figure 2 shows the main body of the slitting device.
  • a column 1b is set on a bed 1a, and a pair of linear guides is provided in front of the column lb in the vertical direction (Z-axis direction).
  • the guide rail 2 is laid, and the slide 3 is supported on the guide rail 2 so as to be slidable up and down.
  • a screw shaft 4 consisting of a ball screw is provided between the guide rails 2 so as to be parallel to the guide rails 2, and the screw shaft 4 is fixed to the slide 3 side.
  • the nut member 4a is screwed together, and the upper end of the screw shaft 4 is connected to a Z-axis motor 5 consisting of a rotary shaft installed on a column lb. Screw shaft 4 rotates forward / reverse with shaft motor 5 H
  • the slide 3 can be moved in the Z-axis direction.
  • One end of a cable 6 such as a wire is attached to the slide 3.
  • the other end of the cable 6 is bypassed by a pulley 7 rotatably supported on the column 1b, and then connected to a counterweight 8 provided behind the column 1b.
  • a counterweight 8 By the action of the counterweight 8, the slide 3 can be moved by the small-capacity Z-axis motor 5.
  • a guide rail 9 made of a linear guide is laid on the upper surface of the slide 3 in the horizontal direction (the X-axis direction), and the guide rail 9 is arranged on the guide rail 9 in the X-axis direction.
  • a spindle head 10 is supported for free movement.
  • a screw shaft 12 which is a ball that is parallel to the guide rail 9, as shown in FIG. 5.
  • a nut member 12a fixed to the lower portion of the spindle head 10 is screwed to the screw shaft 12, and one end of the screw shaft 12 is Is connected to the X-axis motor 13 consisting of the servo motor installed on the side of the motor 3 via the endless belly 14 and the X-axis motor 13 turns the screw shaft 12 forward and backward.
  • the spindle head 10 can be moved in the X-axis direction.
  • a spindle 15 is rotatably supported on the spindle head 10 in a direction perpendicular to the X axis as shown in FIG.
  • a cut 16 made of a metal saw is detachably attached, and the other end of the spindle 15 is a worm.
  • the motor is connected to the spindle motor 18 which is a general-purpose motor for inverter control via the speed reducer 17, and the spindle motor 18 is connected to the spindle motor 18.
  • the tool 15 and the cutter 16 start to rotate.
  • a B-axis indexing means 20 is provided at a position facing the column 1b with the slide 3 interposed therebetween.
  • the upper part of the B-axis indexing means 20 has an indexing table 20a which is indexed and rotated about the B-axis, and is located on the indexing table 20a.
  • the support frame 21 is provided with an upper work support means 22 and a lower work support means 23 which are centered on the B axis and are vertically separated from each other.
  • the cutting center O 1 of the work 24 stacked in the axial direction is aligned with the work center O 2 with respect to the B axis.
  • the upper work means 22 The clamp head 22 a can be moved up and down by a clamp cylinder 25 installed on the upper part of the support frame 21.
  • the motor 18 and the B-axis indexing means 20 are controlled by an NC device (not shown) based on the previously input machining data.
  • the inner and outer peripheral surfaces of the work 24 to be cut and processed are preliminarily laminated with a plurality of piston rings in the axial direction, and the inner and outer peripheral surfaces are processed by a not-shown biston ring processing device. After that, both ends are clamped by a hand carrier jig (not shown) so that the phases of the piston rings do not shift. It is carried in between 2 and 23.
  • the thickness of the cut 16 In consideration of t, as shown in Fig. 11A, the center O 1 of the workpiece 24 is sandwiched by ⁇ calculated by The upper and lower ends of the work 24 are clamped between the upper and lower work support means 22 and 23 by eccentricity in the opposite direction.
  • the center of division ⁇ 1 is divided by the amount of eccentricity ⁇ with respect to the indexing center ( ⁇ axis), as shown in Fig. 11 ⁇ .
  • the work 24 is set between the upper and lower work support means 22 and 23 eccentrically in the opposite direction across the.
  • the upper and lower work supporting means 22 and On 23 a jig that can set the work 24 so that the center of the cut IJ is eccentric with respect to the ⁇ axis by ⁇ is provided.
  • the angle between the straight line connecting the side surface of the cutout 16 and the cutting center ⁇ 2 and the center line passing through the B-axis, the work center ⁇ 2, and the cutting center 01 are cut angles. Since the angle coincides with one half of the length, the cutting angle of the work 24 centered on the B-axis can provide a highly round piston ring.
  • the cutting of the work 24 is performed by the automatic cycle of the NC device.
  • the spindle motor 18 rotates the cutter 16 in the direction of arrow D in Fig. 2 according to a command from the NC device, and at the same time, the indexing table 20a of the B-axis indexing means 20. Is rotated about the B axis by the cutting angle ⁇ °, and the part to be cut first is determined.
  • the X-axis motor 13 is rotated, the spindle head 10 is moved in the X-axis direction by the screw shaft 12, and the rotating cutter 16 is cut into the lower part of the work 24. It is advanced to the position as shown in Figure 12 ⁇ .
  • the indexing table 20a of the B-axis indexing means 20 is rotated in the opposite direction to the above. The next cutting position is calculated. At this time, the index table 20a is cut around the B-axis. However, even if the work 24 is excessively cut, even if the diameter of the cut work 24 is reduced, a perfect circle piston ring as shown in Fig. 1B cannot be obtained. .
  • the cutting center O 1 is decentered by ⁇ with respect to the B axis in advance in consideration of the thickness t of the cutter 16.
  • the spin drill head 10 is moved by the X-axis motor 13 and the rotating cutter 16 is moved to the lower part of the work 24. As shown in Fig. 12B, and then slide by the Z-axis motor 5. 3 is raised, and the work 24 is cut down from the lower end side by the cut 16.
  • the spindle head 10 is retracted by the X-axis motor 13 and then by the Z-axis motor 5. Slide 3 is lowered to its original position.
  • the clamp head 22 a of the upper work support means 22 is raised by the clamp cylinder 25.
  • the cutting process of work 24 can be performed automatically.Adjust the cutting position manually as before. No work is required at all.
  • the loading and unloading of the work 24 is not particularly described. However, if a work loading and unloading device such as a loader or a robot is used, the loading and unloading of the work 24 and the loading and unloading of the work 24 are performed. It is also possible to automate all cutting operations.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Turning (AREA)

Abstract

Un procédé permettant de couper/séparer un segment de piston est automatisé afin d'augmenter la productivité. Tandis que le centre (01) de coupe/séparation de pièces (24) laminé en direction axiale est maintenu excentrique par rapport à l'axe B qui est parallèle à l'axe décrit ci-dessus, les deux extrémités des pièces sont serrées depuis le haut et le bas par un système support de pièces supérieur (22) et un système support de pièces inférieur (23), puis les pièces (24) sont tournées par variation de l'indice, l'axe B étant le centre. Une fois la première position de coupe/séparation repérée, une lame rotative (16) est soulevée dans la direction de l'axe Z qui est parallèle à l'axe B, puis les pièces (24) sont coupées et séparées de l'une de leurs extrémités par la lame (16). Après ce processus de coupe/séparation, les pièces (24) sont de nouveau tournées par variation de l'indice, l'axe B étant le centre pour repérer la position de coupe/séparation suivante. La lame rotative (16) est ensuite redéplacée dans la direction de l'axe Z, de façon à effectuer la coupe/séparation de la position de coupe/séparation suivante. Ceci permet d'automatiser le processus de coupe/séparation et donc d'augmenter la productivité.
PCT/JP1997/003345 1996-09-20 1997-09-19 Procede et dispositif pour couper/separer un segment de piston WO1998012015A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP8/249797 1996-09-20
JP8249797A JPH1094912A (ja) 1996-09-20 1996-09-20 ピストンリングの切割り方法及び切割り装置

Publications (1)

Publication Number Publication Date
WO1998012015A1 true WO1998012015A1 (fr) 1998-03-26

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Application Number Title Priority Date Filing Date
PCT/JP1997/003345 WO1998012015A1 (fr) 1996-09-20 1997-09-19 Procede et dispositif pour couper/separer un segment de piston

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JP (1) JPH1094912A (fr)
WO (1) WO1998012015A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5800119A (en) * 1994-11-23 1998-09-01 Printed Forms Equip Envelope inverter
IT201800002780A1 (it) * 2018-02-16 2019-08-16 Zone Creative S R L Sega per oreficeria, argenteria e bigiotteria, particolarmente per la realizzazione di monili a tubolare

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6399136A (ja) * 1986-09-24 1988-04-30 ゲツツエ　アーゲー ピストリングの製造方法および装置

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6399136A (ja) * 1986-09-24 1988-04-30 ゲツツエ　アーゲー ピストリングの製造方法および装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5800119A (en) * 1994-11-23 1998-09-01 Printed Forms Equip Envelope inverter
IT201800002780A1 (it) * 2018-02-16 2019-08-16 Zone Creative S R L Sega per oreficeria, argenteria e bigiotteria, particolarmente per la realizzazione di monili a tubolare

Also Published As

Publication number Publication date
JPH1094912A (ja) 1998-04-14

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