WO2007119334A1 - ツールヘッド、工作機械及び該工作機械を用いたシリンダブロックのボアの中ぐり加工方法 - Google Patents
ツールヘッド、工作機械及び該工作機械を用いたシリンダブロックのボアの中ぐり加工方法 Download PDFInfo
- Publication number
- WO2007119334A1 WO2007119334A1 PCT/JP2007/054860 JP2007054860W WO2007119334A1 WO 2007119334 A1 WO2007119334 A1 WO 2007119334A1 JP 2007054860 W JP2007054860 W JP 2007054860W WO 2007119334 A1 WO2007119334 A1 WO 2007119334A1
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- WIPO (PCT)
- Prior art keywords
- tool
- boring
- head
- shaft
- bore
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B39/00—General-purpose boring or drilling machines or devices; Sets of boring and/or drilling machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B41/00—Boring or drilling machines or devices specially adapted for particular work; Accessories specially adapted therefor
- B23B41/12—Boring or drilling machines or devices specially adapted for particular work; Accessories specially adapted therefor for forming working surfaces of cylinders, of bearings, e.g. in heads of driving rods, or of other engine parts
-
- 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
- B23D77/00—Reaming tools
- B23D77/02—Reamers with inserted cutting edges
- B23D77/04—Reamers with inserted cutting edges with cutting edges adjustable to different diameters along the whole cutting length
- B23D77/042—Reamers with inserted cutting edges with cutting edges adjustable to different diameters along the whole cutting length by means of oblique planes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P23/00—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
- B23P23/02—Machine tools for performing different machining operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/25—Movable or adjustable work or tool supports
- B23Q1/44—Movable or adjustable work or tool supports using particular mechanisms
- B23Q1/48—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs and rotating pairs
- B23Q1/4876—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs and rotating pairs a single sliding pair followed parallelly by a single rotating pair
-
- 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
- B24B33/02—Honing machines or devices; Accessories therefor designed for working internal surfaces of revolution, e.g. of cylindrical or conical shapes
- B24B33/027—Honing machines or devices; Accessories therefor designed for working internal surfaces of revolution, e.g. of cylindrical or conical shapes using an unexpandable tool
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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
- B24B33/00—Honing machines or devices; Accessories therefor
- B24B33/08—Honing tools
-
- 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
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/04—Headstocks; Working-spindles; Features relating thereto
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- 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
- Y10T29/00—Metal working
- Y10T29/51—Plural diverse manufacturing apparatus including means for metal shaping or assembling
- Y10T29/5168—Multiple-tool holder
-
- 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
- Y10T29/00—Metal working
- Y10T29/51—Plural diverse manufacturing apparatus including means for metal shaping or assembling
- Y10T29/5176—Plural diverse manufacturing apparatus including means for metal shaping or assembling including machining means
-
- 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
- Y10T408/00—Cutting by use of rotating axially moving tool
- Y10T408/03—Processes
-
- 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
- Y10T408/00—Cutting by use of rotating axially moving tool
- Y10T408/36—Machine including plural tools
-
- 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
- Y10T408/00—Cutting by use of rotating axially moving tool
- Y10T408/36—Machine including plural tools
- Y10T408/375—Coaxial tools
-
- 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
- Y10T408/00—Cutting by use of rotating axially moving tool
- Y10T408/83—Tool-support with means to move Tool relative to tool-support
- Y10T408/85—Tool-support with means to move Tool relative to tool-support to move radially
- Y10T408/856—Moving means including pinion engaging rack-like surface of Tool
Definitions
- the present invention relates to a tool head provided with a grinding tool, a boring tool and a machine tool provided with a grinding tool, and a boring method of a bore of a cylinder block using the machine tool.
- boring processing fine boring card etc. to cut to a predetermined diameter and grinding processing to be performed after that Etc.
- boring and grinding can be performed continuously with one spindle of one machine tool, the movement of the cylinder block between machining machines and the misalignment due to re-checking can be eliminated efficiently and precisely.
- the boring tool and the grinding tool are alternatively protruded outward in the main axis.
- a spindle is supported to omit an oscillation mechanism for changing a spindle driving method during boring and grinding.
- the first support unit and the second support unit are provided. During boring, the first support unit and the second support unit are pressed against each other to increase rigidity, and at the time of grinding, the second support unit is separated from the first support unit so as to be reciprocated by weight reduction. It makes the operation easy.
- a balance weight of substantially the same weight is connected to the support unit by a wire to compensate for the weight of the support unit.
- the present applicant has, in Japanese Patent No. 3735487 (Japan), a tool head formed by attaching a grindstone to the outer peripheral portion of a tool as a cylinder.
- the invention relates to a hoyung processing method of rotating and advancing and retracting in a hole formed in a shape.
- the tool head of the tool head according to the difference in the overrun dimension of the wheel head at the one end and the other end. Insert a schedule to compensate for the difference in the overrun dimensions of the tool head at the one end and the other end in the forward and backward drive schedule.
- the Honing-Daka machine completed an overrun of the artillery stone, and there is a large amount per unit time when the artillery stone is not ground.
- One end and the other end of the hole of the work A portion of the end portion and the other end portion are ground, that is, the overrun of the artifice and the amount per unit time which the artillery grinds is small. It is desirable that the positioning accuracy of the tool head be high in this method of horing processing.
- the second support unit is reciprocated away from the first support unit at the time of housing processing. This is to reduce the inertia mass of the moving body, accelerate the moving body quickly with a constant driving force, and allow the moving body to reach a desired high speed as much as possible during reciprocating operation.
- the moving body is light in force while the rigidity is small in the first support unit alone! /, It is easy for stagnation to occur, and the amount per unit time is small! /
- the resonance point is reached by the number of reciprocations (Hz), and it is difficult to perform the reciprocation operation of the moving body at high speed. Therefore, although the weight of the moving body can be reduced and the moving body can be accelerated quickly at the same time, the main shaft can be reciprocated at a relatively low speed in consideration of resonance. As a result, the processing time becomes longer.
- the moving body means a main shaft, a mechanism for supporting the main shaft, a mechanism for rotationally driving the main shaft, and the like.
- processing is performed to a state close to a perfect circle with respect to a bore of a cylinder block which is a workpiece. be able to.
- the bore of the cylinder block that constitutes the automobile engine etc. is cut into a true circle by itself, the bore will be deformed by assembling the cylinder head, crank case, etc. in the subsequent production process. Resulting in. The deformation of the bore may cause the sliding resistance between the bore and the piston to increase when the engine is used, and the engine may not be able to achieve the desired output.
- Japanese Patent Publication No. 61-57121 (Japan) describes that, in place of the dummy head, bore processing is performed in a state where the cylinder peripheral portion of the cylinder block is pressed by a pressing device. .
- the applicant of the present invention has proposed, in Japanese Patent No. 3270683 (Japan), a complex machine tool capable of combinedly performing boring and honing.
- the complex machine tool it is possible to save the space of the processing line, simplify the equipment, and reduce the manufacturing cost of the processed product by omitting the oscillation mechanism used at the time of horing car. is there.
- it has greater axial rigidity. It is possible to perform machining in an irregular state, and to perform bore machining with high accuracy.
- the expansion force in the bore radial direction of the boring tool and position control are performed by hydraulic pressure or the like. For this reason, there is a limit to performing bore processing with higher accuracy than the expansion force and the control (fine adjustment) of the expansion position are difficult.
- Japanese Patent Publication No. 60-52883 discloses a honing machine mounted on a main shaft of a hoing machine tool to perform a honing machine on the workpiece.
- a tool head (tool head)
- a configuration is described that includes a roughing grinding wheel and a finishing grinding wheel.
- Figure 33 is a side view of such a tool head 500.
- a rough processing grindstone 502 and a finishing processing grindstone 504 are alternately inserted in hole portions 505 formed radially at equal intervals.
- the tool head 500 has three rough grinding wheels 502 and three finishing grinding wheels 5 04 each, and the rough grinding wheels 502 and the finishing grinding wheels 504 each have It is fixed to the roughing grinding wheel head 506 and the finishing grinding wheel head 508.
- the roughing grinding stone 502 and the finishing grinding stone 504 are moved in the diametrical direction (arrow B direction in FIG. 34) while being guided by the hole 505 at the same position in the axial direction of the tool head 500 (the diameter direction is expanded). Or contraction).
- the tool head 500 includes a roughing grinding head 506 and a roughing taper cone (cone axis) 510 for expanding or contracting the finishing grinding head 50 8 and a finishing cone for cone (corn axis ) 512 are individually inserted slidably.
- a rough processing stone mount 506 is slidably in contact with the tapered surfaces of the tapered portions 510a and 510b of the roughing taper cone 510.
- a finishing machine stone base 508 slidably abuts on the tapered surfaces of the tapered portions 512a and 512b of the taper cone 512 for finishing force.
- the distal end portion of the roughing taper cone 510 is divided into three branches, and each gap 514 of the three-way taper cone 510 for roughing is a tapered portion 512 a of the taper cone 512 for finishing force, 512b is inserted.
- each finishing grinding stone 504 radially expands toward the arrow B direction (diameter direction outward). From the expanded state, when contracting the finishing stone for processing 504, when the taper cone 512 for finishing force is pushed down in the direction of arrow A2, each finishing stone for finishing 504 is in the opposite direction of the arrow B (diameter direction It is contracted toward the inside).
- the roughing grinding stone 502 and the finishing granite 504 are simply expanded or not expanded to cover the inner diameter of the workpiece, and the inner diameter of the workpiece is not shown.
- Measured with an air micro inner diameter measuring device and adjust the pulling force of the taper cone 510 for roughing and the taper cone 512 for finishing force in accordance with the processing elapsed time and the amount of change in the inner diameter, the rough grinding stone 502 and
- processing is performed while changing the expansion force of the finish processing grindstone 504. In the latter case, very high precision processing is possible.
- An object of the present invention is to provide a machine tool capable of rotating a spindle at a high speed at the time of boring and capable of reciprocating the spindle at a high speed at the time of horing operation. .
- Another object of the present invention is to provide a machine tool capable of performing more accurate processing, for example, at the time of bore processing of a cylinder block.
- the present invention has an object to provide a method for boring a bore of a cylinder block, which can reproduce a state closer to an assembled state in a product and can improve productivity. Do.
- each gallstone of each artifical stone is adapted to the pulling force of each cone axis. It is an object of the present invention to provide a tool head capable of adjusting expansion force and a machine tool provided with the tool head.
- a machine tool includes a tool head having a boring tool and a grinding tool, a rotational drive means for rotating the tool head, the rotational drive means, and the tool head Main shaft that transmits rotational driving force by connecting And a moving means for moving the supporting portion in the axial direction of the main shaft, and the tool head is advanced toward the work while being rotated and the medium is moved.
- the spindle has the same diameter. It is characterized in that it is rotated by a rotational drive means.
- the second support unit can be moved away from the first support unit without reciprocation.
- the spindle can be reciprocated at high speed. Furthermore, even during boring, since the main shaft is rotated with the same diameter, no complicated mechanism or the like for connecting the first support unit and the second support unit is required, and the spindle rotates at high speed. Is possible. Thereby, processing time can be shortened in both honing dakar completion and boring.
- a simple structure can be obtained, which is rich in durability and inexpensive, and is accompanied by the operation of changing the mechanism. No time is required, and as a whole, the machining time for the workpiece as a whole is further reduced.
- the moving means may be a linear motor!,.
- the moving means includes a first moving means for moving the support portion during the grinding process, and a second moving means for moving the support portion during the boring process, at least the first moving means.
- the linear motor is simple and efficient because it can directly and linearly move the support portion, which does not change the direction of transmission of the power transmitted by the rotating part. Therefore, even if the mass of the support is relatively large, it can be operated quickly and reliably.
- the main spindle has an axially extending bar, and the tool head is axially advanced and retracted by the bar, in which case the diameter of the boring tool and the grinding tool are Even with a cone axis to advance and retract in the direction.
- a plurality of linear motors may be provided to face each other at the center of the main shaft.
- the main shaft is covered by a first frame via a support mechanism, and the first moving means is The first frame may be driven. Further, a second frame supporting the first moving means and surrounding the first moving means and the first frame may be provided, and the second moving means may drive the second frame. Good.
- the expanding means for expanding the boring bite and the honing stone is, for example, a servomotor, a pinion gear and a ring gear etc. Since the power conversion means having the vibration isolation function is provided, the expansion force and the expansion position can be easily and accurately controlled during the diametrical expansion operation of the boring tool or the honing artillery stone. .
- the boring process of the bore of the cylinder block it is possible to create the modified NC data and to effectively use the modified NC data at the time of production. . Therefore, it is possible to manufacture a cylinder block having a desired roundness without mounting a dummy head or the like, and the productivity of the cylinder block is greatly improved.
- the processing reaction force generated when the first cone shaft is pulled up by the moving member to expand the first tool base in the diameter direction It is possible to suppress the stagnation of the first cone axis caused.
- the friction force generated between the first cone axis and the second cone axis can be significantly reduced, and the expansion force from the moving member to the first tool base and the second tool base can be reduced. Transmission loss can be significantly suppressed.
- the elongated hole is formed by attaching the lid member to the first cone shaft, for example, the second cone shaft can be easily inserted in a state where the lid member is removed. Since the lid member can then be attached, assembly and disassembly of the hoyung tool head according to the present invention is facilitated.
- FIG. 1 is a schematic perspective view of a machine tool according to a first embodiment.
- FIG. 2 is a partial sectional side view of a spindle drive unit of the machine tool shown in FIG.
- FIG. 3 is a sectional front view of a first support unit of the spindle drive unit shown in FIG.
- FIG. 4 is a partial cross-sectional plan view of the spindle drive portion shown in FIG.
- FIG. 5 is a sectional plan view of a tool head of the machine tool shown in FIG.
- FIG. 6 is a cross-sectional side view of a spindle drive unit according to a modification of the spindle drive unit shown in FIG. Ru.
- FIG. 7 is a partial sectional plan view of a spindle drive unit according to a modification shown in FIG.
- FIG. 8 is a schematic cross-sectional view showing a part of a complex machine tool according to a second embodiment.
- FIG. 9 is a perspective view of a tool head attached to the machine tool shown in FIG.
- FIG. 10 is a perspective view for explaining the internal structure of the tool head shown in FIG.
- FIG. 11 is a partially simplified perspective view of the roughing taper cone in the tool head shown in FIG.
- FIG. 12 is a partially omitted perspective view of a taper cone for finishing cursors in the tool shown in FIG.
- FIG. 13 is a cross-sectional view taken along the line ⁇ - ⁇ in FIG.
- FIG. 14 is a cross-sectional view taken along line XIV--XIV of FIG.
- FIG. 15 is an explanatory sectional view for explaining a state in which the tool in the tool head shown in FIG. 10 is expanded.
- FIG. 16 is a cross-sectional explanatory view for explaining a state in which the coarsely processed granite in the tool head shown in FIG. 10 is expanded.
- FIG. 17 is a cross-sectional explanatory view for explaining a state in which the finishing stone for finishing in the tool head shown in FIG. 10 is expanded.
- FIG. 18 is a partially enlarged schematic view of the first gear set and the second gear set in the machine tool shown in FIG.
- FIG. 19 is a cross-sectional view taken along the line XIX-XIX in FIG.
- FIG. 20 is a partly omitted sectioned perspective view for explaining the combined state of the gears in the first gear set shown in FIG.
- FIG. 21 is a flow chart for explaining the procedures of a boring method and a horning method by the machine tool shown in FIG.
- FIG. 22A is a partial cross-sectional view for explaining the state where the dummy head is mounted on the cylinder block
- FIG. 22B is a state after carburizing the cylinder block with the dummy head mounted
- 22C is a partially omitted cross sectional view for explaining the A partially omitted cross-sectional view for explaining the state in which the product cylinder head is mounted on the
- FIG. 22D is a partially omitted cross-sectional view for explaining the state of the cylinder block after boring without mounting the dummy head
- FIG. 22E is a boring process without mounting the dummy head
- FIG. 10 is a partially omitted explanatory view for explaining a state in which a product cylinder head is mounted on a later cylinder block.
- FIG. 23 is a schematic explanatory view, partly in section, of a machine tool on which a tool head according to a third embodiment of the present invention is mounted.
- FIG. 24 is a perspective view of the tool head shown in FIG.
- FIG. 25 is a perspective view for explaining expansion / contraction means incorporated in the tool head shown in FIG.
- FIG. 26 is a perspective view for describing a state in which a rough abrasive stone pedestal is disposed on the roughing taper cone in the tool head shown in FIG.
- FIG. 27 is a perspective view for describing a state in which a machined processing stone for finishing is arranged on the taper cone for finishing force in the tool head shown in FIG.
- FIG. 28 is a partially omitted perspective view of the roughing taper cone shown in FIG.
- FIG. 29 is a partially omitted plan view of the roughing taper cone shown in FIG.
- FIG. 30 is a schematic cross-sectional view taken along line XXX-XXX in FIG.
- FIG. 31 is a graph showing the variation in the expansion pressure of the roughing grindstone when carrying out the honing caving using the tool head in the conventional configuration.
- FIG. 32 is a graph showing the variation in the expansion pressure of the roughing grindstone when the honing cautery is performed using the tool head in the third embodiment.
- FIG. 33 is a side view of the tool head in the conventional configuration.
- FIG. 34 is a perspective view for explaining the expansion / contraction means incorporated in the tool head in the conventional configuration.
- FIG. 35 is a perspective view for describing a state in which a roughing machined turret is arranged on the roughing taper cone in the tool head in the conventional configuration.
- FIG. 36 is a perspective view for describing a state in which a machined processing stone for finishing is arranged in a taper corner for finishing caul in a tool head in a conventional configuration.
- FIG. 37A is a schematic cross-sectional view partially showing a line XXXVII-XXXVII in FIG. 34 for explaining a state in which both the roughing grinding stone and the finishing grinding stone are expanded in the conventional configuration.
- FIG. 37B is a partially omitted schematic cross-sectional view taken along line XXXVII-XXXVII of FIG. 34 for illustrating a state in which the finished processed granite is expanded.
- FIG. 38 is a partially omitted schematic cross-sectional view taken along line XXXVIII-XXXVIII of FIG.
- FIG. 39 is a partially omitted plan view of the roughing taper cone in the conventional configuration.
- the complex machine tool (machine tool) 10 is also disposed in a processing line in which, for example, a cylinder of an internal combustion engine for automobiles is a work W1.
- the main spindle drive unit 11 that performs actual boring and hoing caulking (grinding and IJ machining) on the workpiece W1
- the workpiece loading unit provided on the front surface of the machine tool
- the workpiece transfer mechanism 14 that reciprocates between the lower part of the shaft drive part 11 and transfers the pallet 12 on which the input work is placed and fixed, the spindle drive part 11 and the work transfer mechanism 14 It is deployed in the above-mentioned error as one system having a supervisory control board 16 to control.
- the spindle drive unit 11 is attached to the side of the work transfer mechanism 14 of the column 20 vertically rising at the upper part of the horizontal base 18, that is, the front surface 20a of the machine tool.
- the spindle drive unit 11 has a spindle (spindle shaft) 32 having a tool head (machining head) 30 at its tip, and a first support for rotatably supporting the spindle 32.
- a unit (support portion) 34, a second support unit (support portion) 36 slidably supporting the first support unit 34 in the vertical direction, and the second support unit 36 are sliced in the vertical direction with respect to the column 20.
- a column slide mechanism 38 which supports the load.
- a vertically connected bar 33 is provided at the axial center of the main shaft 32!
- the first support unit 34 has a vertically elongated, rectangular cylindrical first frame 40 and an upper portion in the first frame 40.
- a plurality of bearings provided for rotating the main shaft 32.
- the actuator 42 is provided to rotate the main shaft 32, the main spindle motor 44 provided between the main spindle 32 and the auxiliary actuator 42, and the plurality of bearings rotatably supporting the main spindle 32 with respect to the first frame 40. (Bearing mechanism) 46.
- the tool head 30 of the main spindle 32 is provided so as to project downward from the first frame body 40.
- An activator 42 is connected to the bar 33 and operates the tool head 30 via the bar 33. That is, the bar 33 passing through the main shaft 32 is moved up and down by the actuator 42.
- the second support unit 36 is a sliding mechanism within the frame for supporting the first support unit 34 and the second frame 50 having a vertically long, rectangular cylindrical shape, the back plate 52 fixed to the second frame 50, and the second support unit 34. 54, two balance cylinders 56 connected to the upper end of the first support unit 34, a pair of left and right linear motors 58 for slidingly driving the first support unit 34 in the vertical direction, and a back surface direction from the back plate 52 , And a brake mechanism 61 for fixing the first support unit 34. As shown in FIG.
- the second frame 50 surrounds the four sides of the first frame 40 and is set slightly longer than the first frame 40.
- the back plate 52 protrudes above the second frame 50, and the protruding portion fixes two balance cylinders 56 via the bracket 63.
- the in-frame sliding mechanism 54 includes two first rails 62 provided along the vertical direction on the surface side of the back plate 52, and a plurality of slider members 64 attached to the first rails 62 in a sliding pair. And.
- the slider member 64 is fixed to the rear surface of the first frame 40 while engaging the first rail 62, and slidably supports the first support unit 34.
- the pair of linear motors 58 includes a thin stator 58b fixed to the second frame 50, and a magnet 58a provided on the outer surface of the first frame 40 so as to face the stator 58b. .
- the magnet 58a is moved following, and the first support unit 34 slides up and down relative to the second support unit 36 along the first rail 62. It will be.
- both linear motors 58 are disposed opposite to each other with respect to the main shaft 32, attraction and repulsion between both stators 58b and magnets 58a due to the movement of the magnetic field of the stator 58b.
- the force can be offset to move the first support unit 34 smoothly.
- the ball screw type linear drive means performs rotation transmission
- the ball screw There are mechanisms such as a male screw and a female screw (nut), a bearing for supporting a male screw of a ball screw, and a coupling for connecting a power source and a male screw of a ball screw.
- torsion and backlash occur in these mechanical parts, and errors easily occur between the target position and the actual position.
- the linear motor 58 of the complex machine tool 10 since there is no such mechanical portion, the target position and the actual position are erroneously compared with the ball screw type linear drive means. There is little difference. Furthermore, the linear motor 58 has a linear encoder (consisting of a head attached to a scale and a moving body) not shown, and positioning accuracy of about ⁇ 0.5 to 1.0 m is possible depending on the resolution of the linear encoder. And This is an error of about 1Z10 as compared with the ball screw type linear drive means.
- the complex machine tool 10 is suitably used for the honing processing method in which the positioning accuracy of the tool head is important (for example, the method described in the aforementioned Japanese Patent No. 3735487 (Japan)).
- the linear motor 58 can move the moving body at high speed while maintaining the accuracy, as compared with a ball screw type linear motion driving means.
- a ball screw type linear motion driving means even in the ball screw type linear motion drive means, it is possible to move at high speed. To speed up with this method is to increase the lead pitch of the ball screw, and in this way High-speed operation is possible, but resolution and positioning accuracy are degraded.
- the positioning accuracy of the linear motor 58 is determined by the resolution of the linear encoder, it is suitable for the hoying force that can not be degraded by high speed wiring.
- a downward rod 56a is connected to the upper end of the first support unit 34, and the action of compressed air compensates for part or all of the weight of the first support unit 34 (cancellation). )doing. Accordingly, the apparent weight of the first support unit 34 is approximately zero, and the linear motor 58 can move or hold the first support unit 34 with a small force.
- the spindle drive unit 11 can be made lightweight and compact.
- the mass of the first supporting unit 34 and the mass of the balance weight are combined. Therefore, it takes a great deal of power to force and accelerate the moving body.
- the inertia mass of the movable body is only the first support unit 34. Therefore, the weight compensation device with the conventional weight weight device is used. In comparison, the moving body can be accelerated and accelerated by applying a force.
- the weight compensation amount in real time it is preferable to change the weight compensation amount in real time according to the acceleration. Specifically, when increasing or decreasing the compensation amount or accelerating the moving body in the upward direction, the pressure in one cylinder chamber is actively raised to compensate for the upward acceleration, and when accelerating the moving body in the downward direction, The internal pressure of the other cylinder chamber may be raised to compensate for downward acceleration.
- the brake mechanism 61 has a brake plate 66 provided on the back surface of the first support unit 34 along the vertical direction, and a brake pad 68 for clamping and fixing the brake plate 66.
- the brake pad 68 is provided on the surface of the back plate 52, and holds the brake plate 66 by opening and closing under the action of a predetermined controller.
- the slider member 64 is disposed on the first rail 62 provided on the back plate 52 fixed to the second frame 50 of the second support unit 36 that does not energize the linear motor 5 8.
- the first support unit 34 slidably supported via the rear cover 52 can be fixed to the back plate 52 with certainty.
- the column slide mechanism 38 is installed at the top of the column 20, and is connected to the slide drive motor 70 positioned so that the motor shaft 70a is directed downward, and to the motor shaft 70a by a shaft joint 72.
- Ball screw 74 a bearing member (not shown), two second rails 76 provided on the surface 20a side of the column 20 along the upper and lower directions, and the second rails 76 attached in a sliding pair.
- a plurality of slider members 78 is fixed to the back of the back plate 52 while slidably engaged with the second rail 76, and slidably supports the second support unit 36.
- the nut body 60 is screwed into the ball screw 74, and moves as the slide drive motor 70 rotates, and the second support unit 36 moves along the second rail 76 against the column 20. It will slide up and down.
- the tool head 30 is provided with a cutting tool (boring cutting tool, boring tool) 100 as a boring tool at its tip, and rough processing granite (grinding tool) which is a hoyung machining tool in the body part It has a processing tool, a roughing grindstone, a rough hoyung grindstone) 102 and a finishing grindstone (grind processing tool, finishing hoyung iron ore) 104.
- a cutting tool boring cutting tool, boring tool
- rough processing granite grinding tool
- three roughening grinding wheels 102 and three finishing grinding wheels 104 of the tool head 30 are provided.
- the roughing grindstones 102 are arranged at equal intervals of 120 ° and fixed to a grindstone table (grindstone) 106 respectively.
- the finishing grinding wheels 104 are arranged at equal intervals of 120 °, and are fixed to the turret (grinding wheel) 108 respectively.
- the distance between the adjacent roughing grinding stone 102 and the finishing grinding stone 104 is set at 60 °.
- the turret 106 and the turret 108 are respectively guided by the guide holes (holes) 110 and slidable in the radial direction.
- the hollow portion of the tool head 30 is provided with cone shafts (expansion cone shafts) 112 and 114 for advancing and retracting the turrets 106 and 108 in the diameter direction. Force not shown
- the cone shaft 112 has an inclined surface which can cam drive the grinding wheel stand 106, and the diameter of each roughened work stone 102 is increased by vertically moving the cone shaft 112. You can move in and out of the direction.
- the cone shaft 114 has an inclined surface capable of driving the wheel head 108 by force, and the cone shaft 114 moves up and down in the axial direction to diametrically process each finishing stone for finishing 104. It is possible to advance and withdraw.
- the cone shafts 112 and 114 are operated by an actuator 42 via a bar 33 to advance and retract.
- the above-mentioned cutting tool 100 is fixed to a tool rest (not shown), and is guided by the respective guide holes (not shown) so as to be expandable or contractible in the diameter direction, similarly to the artillery pedestals 106 and 108. It has become. Similar to the turrets 106 and 108, they can be advanced and retracted in a diametrical direction by a cam drive action by means of the cone shafts 112 and 114.
- the tool head 30 also has an air nozzle 120 that measures the inside diameter of the hole H based on the pressure or flow rate while ejecting compressed air.
- the main spindle 32 and the tool head 30 are rotated by the main spindle motor 44, and the ball screw 74 is rotated by the slide drive motor 70, and the second support unit 36 and the first support unit 34 at a predetermined speed.
- the tool W is moved downward, and boring is performed by the cutting tool 100 so that the hole H of the workpiece W1 has a predetermined diameter.
- the main shaft 32 is set to a diameter having sufficient rigidity, and since it has a simple hollow shape in which there is no separation mechanism or connection mechanism, high speed rotation can be performed. Processing can be performed quickly (see Figure 2).
- the slide drive motor 70 is reversed to raise the first support unit 34 and the second support unit 36 appropriately, and the spindle motor Stop the timer 44.
- the roughing artifice 102 is made to project a proper amount in the diametrical direction under the action of the cone shaft 112, and the brake pad 66 of the brake mechanism 61 is opened to release the brake plate 66 for the first support. Allow unit 34 to move up and down.
- rough roughing processing (rough roughing processing) is performed. That is, while the rotation of the spindle motor 44 is resumed, the first support unit 34 is reciprocated by an appropriate amount under the action of the linear motor 58 (see FIG. 4). At this time, since the slide drive motor 70 is stopped, the second support unit 36 is fixed to the column 20, and the first support unit 34 is fixed to the column 20 and the second support unit 36. Reciprocate. As a result, rough hounging is performed by contacting the inner surface of the hole H of the rough processed granite 102 power S work W l while performing rotation and elevation operations.
- the first support unit 34 should be compensated for its own weight by the balance cylinder 56.
- the first supporting unit 34 can be moved up and down with a small electric power so that the linear motor 58 is not subjected to an excessive load force S.
- the magnitudes of the loads at the time of rising and lowering of the first support unit 34 become a balanced linear system, and the control characteristics are improved.
- the first support unit 34 and the main shaft 32 have sufficient rigidity, they can be raised and lowered at a high speed so that the processing time for the workpiece W1 can be shortened.
- the rear motor 58 can linearly move the first support unit 34 directly without rotating the rotating part to change the direction of power, which is simple and efficient, and the mass of the first support unit 34 can be reduced. Even if it is relatively large, it can be operated reliably.
- the main spindle motor 44 and the linear motor 58 are stopped, and then the roughing grindstone 102 is moved so as to contract its diameter, and the diameter of the finish processing granite 104 is large. Make it project so that That is, while roughening the roughened granite 102 into the guide hole 110 under the action of the cone shaft 112, the finishing stone 104 for finishing is appropriately protruded in the diametrical direction under the action of the cone shaft 114.
- finish horning is performed. That is, in the same manner as in the rough hauling car, the rotation of the spindle motor 44 is resumed, and the first support sheet 34 is reciprocated by an appropriate amount under the action of the linear motor 58. As a result, the finishing hounging is performed by contacting the finishing process granite 104 with the combined path of rotation and elevation with the inner surface of the hole H of the workpiece W1. Even in the finish finishing process, as in the rough finishing process, the effect is obtained that the process is simple and efficient, and the processing time can be shortened.
- the spindle motor 44 and the linear motor 58 are stopped, and post-processing such as measurement confirmation of the inner diameter of the hole H of the leak W 1 by the air nozzle 120 is performed. Furthermore, while the first support unit 34 is fixed by the brake mechanism 61, the first support unit 34 and the second support unit 36 are raised under the action of the slide drive motor 70, and the main shaft 32 is in the hole H of the workpiece W1. Remove from and finish the processing.
- the measurement and confirmation of the inner diameter of the hole H of the workpiece W1 by the air nozzle 120 may be after the end of the rough honing process or during the rough honing process. In addition, I do not use power even during finishing.
- the spindle 32 is rotated without changing the diameter (with the same diameter) at the time of boring and at the time of boring. That is, the spindle 32 can be handled as it is mechanically the same mechanism at the time of boring and boring, and an auxiliary mechanism etc. for changing the diameter is unnecessary, and the spindle at the time of boring In addition to being able to rotate 32 at high speed, it can be reciprocated at high speed at the time of horn car.
- the first frame 40 for supporting the main shaft 32 is provided on the outside of the boring main shaft (spindle 32) at the time of horing, the first frame 40 and the movable body Only the main spindle 32 can ensure sufficient rigidity that the cross-sectional area of the moving body is larger than that of the boring main spindle 32, and there is no risk of resonance even when reciprocating at high speed.
- the linear motor 58 can be operated at a higher speed while maintaining the positioning accuracy, so it is suitable for the hounging process.
- the boring spindle and hoyung spindle are integrally processed! This is to ensure the rigidity of the rotating body, and the cutting resistance is greater at boring processing than at Honing da kae !.
- the diameter of the boring spindle is the same as in the prior art, and rigidity is secured, and there is no separation mechanism at the time of hoyung.
- the inertial mass of the body is reduced, high-speed rotation is possible, and processing time is further reduced.
- the complex machine tool 10 since it is not necessary to change the mechanism of the main spindle during boring, it has a simple structure, and the durability is improved and the cost is reduced. At the same time, the time required for changing the mechanism is unnecessary, and the processing time for the workpiece Wl is further shortened.
- the spindle 32 is attached to the column 20 via the first support unit 34, the second support unit 36, and the column slide mechanism 38, as shown in FIG. 6 and FIG.
- the structure may be simpler.
- components of the spindle drive unit 1 la which are the same as those of the complex machine tool 10 will be assigned the same reference numerals and detailed explanations thereof will be omitted.
- the main spindle 32 of the spindle drive unit 11a is attached to the column 20 via the first support unit 34, and the second support unit 36 and the column slide in the complex machine tool 10 Mechanism 38 is intentionally omitted.
- first rail 62 is provided on the surface 20 a of the column 20, and supports the first support unit 34 so as to be able to move up and down.
- a second frame 50a having substantially the same shape as the second frame 50 described above is provided so as to surround the first support unit 34.
- Linear motors 58 are provided on both inner side surfaces of the second frame 50 a so that the first support unit 34 can move up and down with respect to the column 20.
- the brake pads 68 of the brake mechanism 61 are provided on the column 20 so that the first support unit 34 can be fixed to the column 20.
- the linear motor 58 serves as the first support for both the operation of lowering the spindle 32 at the time of boring and the operation of raising and lowering the spindle 32 during rough honing and finishing howing.
- the main shaft 32 is moved by moving the unit 34. That is, since the elevating operation of the main spindle 32 at the time of processing the hole H of the workpiece W1 is all performed by the linear motor 58, the second support unit 36 and the column slide mechanism 38 can be omitted, and the structure is further simplified. It has become.
- the effect is obtained that the machining time for the workpiece W1 can be shortened in a simple and efficient manner.
- the linear motor 58 that constitutes the main axis drive unit 11a performs boring processing in addition to the honing caulks, it is possible to generate the pressing force required for boring processing, so that the honing car may be generated.
- the output power is larger than the rated output of the linear motor 58 in the complex machine tool 10 that uses the linear motor only, even if using a type.
- the multi-function machine 210 is a machine tool that inserts a tool head 212 into a workpiece W 2 (for example, a bore of a cylinder block of an automobile engine) and performs boring and hoing processing. It is.
- a complex machine tool (machine tool) 210 is inserted into the workpiece W 2 and has a substantially cylindrical shape capable of expanding or reducing the diameter of the tool head (processing head) 212 and the first gear set 216. And a second gear set 218, a first servomotor 220 and a second servomotor 222 for rotationally driving the first gearset 216 and the second gearset 218, and a main shaft (spindle shaft) to which the tool head 212 is connected. And a moving mechanism (moving means) 226 for moving the main shaft 224 axially (in the direction of arrow A).
- the first gear set 216 and the second gear set 218 function to transmit the driving force from the first servomotor 220 and the second servomotor 222 to the tool head 212 as an expanding force.
- the first gear set 216, the second gear set 218, the first servomotor 220, the second servomotor 222, the main shaft 224, and the like are housed in a housing (support portion) 228.
- the main shaft 224 is axially supported by a housing 228 via a bearing or the like (not shown), and a gear 223 provided on the outer surface thereof is connected to the drive shaft of a main shaft motor 221 serving as a rotational drive means. By being combined with 225, it is rotationally driven.
- a belt and pulley mechanism may be used for rotation of the main shaft 224.
- the movement mechanism 226 is provided side by side with the guide 227 for guiding the guide portions 228a and 228b provided in the housing 228, and the renore 227, and the worm gear of the bearing 228 (a nut spiral 228c and a ball spiral
- the ball screw 229 is rotationally driven by the servomotor 231, whereby the main shaft 224 is driven to advance and retract in the direction of arrow A.
- a control unit (supervisory control that controls the expansion force of the tool head 212, ie, the drive of the first servo motor 220 and the second servo motor 222, the drive of the servo motor 231, etc. Board) 230 is provided.
- the control unit 230 records various NC data and the like when processing the workpiece W2.
- the tool head 212 has a main body portion 232 having a substantially cylindrical shape, and a main body portion Roughing grindstone (Grinding tool, Roughing hoyung grindstone) 236 and Grinding tool (Grinding tool) , Honing artillery) 238 for finishing.
- a cutting tool (boring cutter, boring tool, FB tool, fine boring tool) 242 is inserted in a hole 240 formed on the circumferential surface of the main body section 232.
- four air micro detection means 244 are radially disposed on the circumferential surface of the main body portion 232 between the roughing grinding stone 236 and the finishing grinding stone 238.
- the air micro detection means 244 measures the inside diameter of the workpiece W2 by ejecting air supplied from an air passage (not shown) formed in the tool head 212 from the air nozzle 244a.
- the tool head 212 is provided with a cutting tool holder 246 to which a throwaway tip (not shown) is attached near the outer peripheral tip.
- the tool holder 246 can be replaced by a bolt 246a.
- Such a tool holder 246 is connected to an expansion member (not shown) similar to an expansion member (cone shaft, taper cone) described later, and is moved in the diametrical direction (expansion
- the tool head 212 has three rough grinding wheels 236 and three finishing grinding wheels 238.
- the roughing grindstone 236 and the finishing grindstone 238 are fixed to the roughing grindstone head (grindstone head, roughing grindstone shi) 248 and the finish processing grindstone head (grinding stone head, finish grindstone shi) 250 respectively It is done.
- a cutting tool 242 is provided on the tip side of the finishing machine turret 250.
- the nut 242 is screwed to a female screw (not shown) of the bolt 252 force S body portion 232, and fixed, for example, to a pin 256 via a cartridge 254 which is also an elastic member such as a leaf spring.
- the roughing grindstone 236 and the finishing grindstone 238 are moved in the diametrical direction (arrow B direction in FIG. 10) while being guided by the hole 234 at the same position in the axial direction of the tool head 212. Expandable or contractible). Similarly, the noise 242 can be moved (expanded or contracted) in the radial direction while being guided by the hole 240.
- the tool head 212 slidably accommodates a rough processing taper cone (expansion cone shaft, cone shaft) 258 for expanding the rough processing granite pedestal 248 in the diametrical direction.
- a rough processing taper cone expansion cone shaft, cone shaft
- the finishing processing granite block 250 is expanded in the diameter direction.
- a taper cone (conical shaft for expansion, cone shaft) 260 for finishing power is inserted in a freely slidable state separately from the rough cone for taper processing 258 !.
- the inner inclined surfaces 248a and 248b of the rough-machined turret 248 are slidably in contact with the tapered surfaces of the tapered portions 258a and 258b of the taper cone for light ⁇ .
- the inner inclined surfaces 250a and 250b force S slideable of the processing grindstone table 250 are available.
- the tapered portion 262 for a bit for expanding the pin 256 (tool 242) in the diametrical direction is provided.
- the tip of the taper cone 258 for ⁇ is divided into three branches.
- each taper part 260a, 260b of the taper cone 260 for finishing force is inserted in each space 264 of the taper cone 258 for roe formed by being divided into a forked shape (see FIG. 10).
- the tip end portion of the finishing taper cone 260 including the tool taper portion 262 is in a state of being protruded from the tip end portion of the taper cone 258 for die.
- the taper cone 258 for the lens and the taper cone 260 for the finishing force are connected to the shafts 266 and 268, respectively. There is.
- These shafts 266, 268 are cylindrical (hollow) and are inserted coaxially in the inside of the shuffle 266 in a coaxial manner!
- the shaft 268 is advanced, and when the finishing taper cone 260 is pushed in the direction of arrow A2, the cutting tool taper portion 262 presses the pin 256 (FIG. 15). reference).
- the main body ⁇ 232 [with being fixed! Reciprocally deforming (reversing) the cartridge 254 with the bonole ⁇ 252 acting as a fulcrum as a fulcrum, the node 242 is directed toward the arrow B direction (diameter direction outside) It is expanded while being guided by the hole 240 of the main body 232.
- each coarse working stone 236 is radially expanded in the diametrical direction while being guided to the hole 234 of the main body portion 232 in the arrow B direction (diametrically outer side).
- the shaft 266 is advanced to push the taper cone for roe 258 in the direction of the arrow A2.
- each roughing granite 236 is guided by the hole 234 and contracted in the direction opposite to the arrow B (inward in the diametrical direction).
- each finishing machined stone 238 is radially expanded in the diametrical direction while being guided to the hole 234 of the main body portion 232 with a force directed in the direction of arrow B (the centrifugal direction of the diameter).
- the shaft 266 is advanced, and the taper cone 260 for finishing force is pushed in the direction of arrow A2.
- each finishing work stone 238 is guided by the hole 234 and contracted in the direction opposite to the arrow B (inward in the diameter direction).
- the roughing machine base 248, the finishing machine base 250, the roughing taper cone 258, and the finishing power taper cone 260 0 force bit 242, roughing It will function as an expansion (shrinkage) member for expanding (contracting) the processed granite 236 and the finished processed granite 238.
- the tool head 212 configured as described above is coupled to the main shaft 224 as shown in FIG. 8, and accordingly, the tool head 212 also rotates following the rotation of the main shaft 224. It is driven.
- shafts 266 and 268 are accommodated coaxially in the direction of arrow A, as shown in FIGS. 8 and 18, inside the cylindrical main shaft 224 (hollow shape).
- the inner circumferential surface of the main shaft 224 and the outer circumferential surface of the shaft 266, and the inner circumferential surface of the shaft 266 and the outer circumferential surface of the shaft 268 are in contact with each other by spline fitting (see FIG. 19).
- the shafts 266, 268 are movable (slidable) individually or simultaneously in the direction of arrow A within the main shaft 224, while rotating substantially integrally with the main shaft 224 in the rotational direction.
- Shafts 266 and 268 are respectively connected to the second gear set 218 and the first gear set at the rear end side opposite to the tip side connected to the roughing taper cone 258 and the finishing taper cone 260 of the tool head 212. It is linked to 216. Therefore, in the complex machine tool 210 When the first gear set 216 is driven by the first servomotor 220, the shaft 268 moves back and forth. Similarly, when the second gear set 218 is driven by the second servomotor 222, the shaft 266 moves back and forth.
- FIG. 20 is a partially omitted schematic perspective view for explaining the coupling state of the gears in the first gear set 216.
- FIG. The combined state of the gears in the second gear set 218 is also substantially the same as that of the first gear set 216 shown in FIG.
- a gear gear 270 coupled to the drive shaft 220a of the first servomotor 220 and a spur gear 272a on the outer periphery are engaged with the gear on the gear 270, and ball screws are provided on the inner periphery.
- a cylindrical ring gear 272 in which an internal thread (threaded portion) 272b is formed and a cylindrical ball screw 274 in which an external thread (threaded portion) 274a on the outer periphery engages with the internal thread 272b of the ring gear 272 are provided.
- the first gear set 216 includes an inner race (inner ring) 2 76 a fitted on the outer periphery of the shaft 268, an outer race (outer ring) 276 b fitted on the inner periphery of the ball screw 274, and rolling elements 276 c.
- a bearing 276 composed of The pinion gear 270 is supported by housings 278 and 280 for housing 228. Ring gear 272 ⁇ ⁇ ⁇ , bearings 282, 284 ⁇ Noriching 228 ⁇ This is supported.
- the inner race 276a may be formed integrally with the outer periphery of the shaft 268.
- the outer race 276b may be formed integrally with the inner periphery of the ball screw 274.
- a pinion gear 286 connected to the drive shaft 222a of the second servomotor 222 and a spur gear 288a on the outer periphery are engaged with the gear on the inner gear 286.
- the second gear set 218 includes an inner race (inner ring) 292a fitted on the outer periphery of the shaft 266, an outer race (outer ring) 292b fitted on the inner periphery of the ball screw 290, and rolling elements 292c. It has a bearing 292 configured.
- the pinion gears 286 are supported by bearings 294 and 296 on the housing 228.
- the ring gear 288 is supported by bearings 298 and 300 on the housing 228.
- the inner race 292 a may be formed integrally with the outer periphery of the shaft 266, and similarly, the outer race 292 b may be formed integrally with the inner periphery of the ball screw 290.
- the gear-on gear 270 is rotationally driven.
- the ring gear 272 is rotationally driven, whereby the ball screw 274 advances and retracts in the direction of arrow A in accordance with the direction of rotation.
- the shaft 268 also moves back and forth as the ball screw 274 moves back and forth.
- the pin-on gear 270 is rotatable by the first servomotor 220 and fixed at a desired phase.
- the shaft 268 is also movable back and forth and fixed at a desired position (arrow A direction). That is, since the taper cone 260 for finishing caulking connected to the shaft 268 is similarly movable back and forth and fixed at a desired position, the Neut 24 2 and the finishing forged granite 238 are expanded (contracted). B) freely and at a desired position (in the direction of arrow B).
- the pin-on gear 286 is rotatable by the second servomotor 222 and fixed in a desired phase. Therefore, the shaft 266 is also movable back and forth and fixed at a desired position (in the direction of arrow A). Accordingly, since the tapered cone 258 connected to the shaft 266 is also movable back and forth on its own and can be fixed at a desired position, the coarsely processed granite 236 can be expanded (retracted) and can be moved to a desired position. Fixable by arrow B).
- the first servomotor 220 As described above, in the complex machine tool 210, the first servomotor 220, the second servomotor 222, the pin-on gears 270 and 286, the ring gears 272 and 288, the ball screws 274 and 90, and the bearings 276 and 292. It functions as an expansion (shrinkage) means for expanding (contracting) force Noito 242, crude carotite 236 and finishing carotene 238.
- the first servomotor 220 and the second servomotor 222 are arranged in parallel with the shafts 266 and 268 in the opposite direction. I hate it. Furthermore, by arranging the ring gear 272, 288, the Bonore screw 274, 90 and the bearings 276, 292 on the same axis, the overall configuration has been greatly miniaturized (compacted).
- the cylinder block material 302a [this, a dummy head, and a dummy head 304] are mounted.
- the dummy head has a shape and material force that simulates a product cylinder head up to 304, and a hole 304b larger in diameter than the bore 303 of the cylinder block 302a is formed (see FIG. 22A).
- step S2 when the cylinder block 302a is disposed at a predetermined position, the tool head 212 (spindle 224) force bore 3 03 (arrow A1 direction) by the moving mechanism 226 under the control of the control unit 230. Move forward).
- step S3 the first servomotor 220 is driven under the control of the control unit 230, and the shaft 268 advances in the direction of the arrow A2 by the action of the first gear set 216.
- the pin 256 is pressed in the diametrical direction (arrow B direction) by the taper portion 262 for the cutting tool. That is, byte 242 is expanded.
- step S 4 the boring force of the bore 303 of the cylinder block 302 a is performed by the Neut 242.
- the servomotor 231 and the first servomotor 220 are appropriately driven and controlled. That is, the axial position of the tool head 212 and the diametrical position and expansion force of the cutting tool 242 are appropriately controlled. For this reason, the bore 303 is surely processed by the cutting tool 242 to a desired roundness (shape).
- step S5 the cylinder inner diameter (bore diameter) for each axial position (each position in the direction of arrow A) of the cylinder block 302a after being subjected to drilling force control under the control of the control unit 230 is shown in FIG. Measure with a measuring instrument such as an optical or mechanical type not shown. This measurement data is recorded, for example, in the control unit 230 as first inner diameter data (D1). Such measurement of the inner diameter can also be performed using an air micro detection means 244.
- the reason for measuring the first inner diameter data (D1) is to measure the thermal effect of processing.
- the thermal effects of cutting resistance and the like occur, so the normal temperature of the bore 303 after processing is also a force that normally shrinks.
- this contraction is bore 303
- the thermal effect that is, the larger the thermal expansion, the larger the amount of contraction.
- step S6 the dummy head 304 is removed from the cylinder block 302a for which the boring force has been applied as described above and the inner diameter has been measured.
- the inner diameter of the bore 303 of the cylinder block 302a is slightly deformed from the state at step S4 and step S5. That is, the inner diameter shape is deformed by the stress due to the assembly of other parts, in other words, the assembly of the product cylinder head 306.
- the stress due to the assembly of the dummy head 304 is regarded as the stress due to the assembly of the product cylinder head 306. Therefore, when the dummy head 304 is removed, the stress in the step S4 and the step S5 is slightly deformed because the stress is eliminated.
- the state in step S4 and step S5 is a substantially perfect circular state because it is bored by the complex machine tool 210 equipped with the tool head 212 of the present embodiment and the above-described expansion means and the like.
- step S7 the cylinder inner diameter (bore diameter) at each axial position of the cylinder block 302a after removal of the dummy head 304 is measured in the same manner as in step S5.
- This measurement data is recorded, for example, in the control unit 230 as second inner diameter data (D2).
- the state in step S7 is a state in which the substantially perfect circular state force in step S4 and step S5 is also deformed by the release of the stress, and is a state which is not a slightly deformed true circle.
- step S8 the first inner diameter data (D1) acquired in step S5 is used as a correction value of the second inner diameter data (D2) acquired in step S7, Correct the diameter data (D2) and create NC data (DN).
- the NC data (DN) created in this way has a borehole diameter of the cylinder when the dummy head 304 is mounted after boring the cylinder block material without mounting the dummy head 304. Is the data created to achieve the desired degree of circularity.
- step S 9 the NC data (DN) created at step S 8 is input to the control unit 230 of the complex machine tool 210.
- step S10 first, a cylinder block 302b, which is a new cylinder block material different from the cylinder block 302a which has been subjected to the boring force in the above step S4, is disposed at a predetermined position. Then, under the control of the control unit 230, the input is performed as described above. A boring card is applied to the cylinder block 302b in accordance with the acquired NC data (DN).
- DN NC data
- step SSI 1 the product cylinder head 306 is attached by bolts 306a to the cylinder block 302b which has been subjected to the boring processing as described above (see FIG. 22C). Unlike the dummy head 304, the product cylinder head 306 is a cylinder head used as an actual product.
- the cylinder inner diameter (bore diameter) at each axial position of the cylinder block 302b is measured in the same manner as in step S5 and the like.
- This measurement data is recorded, for example, in the control unit 230 as third inner diameter data (D3).
- a measuring instrument for measuring the inner diameter is inserted from the spark plug insertion hole 306b formed in the product cylinder head 306, there is no need to apply special force to the product cylinder head 306 or the like. Because it is suitable.
- boring force is applied as described above up to the temperature of the bore 310 of the cylinder block 308 when the actual automobile engine is used regularly.
- the cylinder inner diameter (bore diameter) may be measured by heating the cylinder block 302b. Then, if the data force product cylinder head 306 created in the next step S12 is mounted, the temperature of the cylinder block will rise when the engine is actually mounted on a car and used regularly. The data is created so that the inner diameter (bore diameter) will be the desired roundness.
- the cylinder block 302 b as described above it may be heated from the cylinder inner diameter (bore) side using an electromagnetic induction heater (not shown). Then, it is simple and can be quickly heated, which is preferable.
- step S12 the third inner diameter data (D3) acquired in step S11 is used as a correction value of the NC data created in step S8 to correct the NC data, Corrected NC data (create DN. Corrected NC data (DN ') created in this way carry out boring force of cylinder block material without attaching dummy head 304 and then make product cylinder head 306 It is data created so that the cylinder inner diameter (bore diameter) will have the desired roundness when mounted.
- the modified NC data (DN is used in the production process and the boring block material of the cylinder block material is sequentially created) created as described above
- step S 13 the corrected NC data (DN ′) created in step S 12 is input to the control unit 230 of the complex machine tool 210.
- step S14 the cylinder block 308, which is a new cylinder block material, is disposed at a predetermined position in the complex machine tool 210, and correction is performed under the control of the control unit 230.
- NC data Perform boring according to DN.
- the bore 310 of 308 is to be subjected to korole in consideration of the deformation after mounting the product cylinder head 306 (see FIG. 22D). That is, by mounting the product cylinder head 306 on the modified NC data (the cylinder block 308 carved based on the DN, the bore 310 of the cylinder block 308 can obtain the roundness necessary for the product (see FIG. See 22E).
- step S15 hoying processing using the roughing processing stone 236 and the finishing processing stone 238 is performed on the cylinder block 308 side. Specifically, first, under the control of the control unit 230, the drive of the first gear set 216 or the second gear set 218 is controlled by the first servomotor 220 or the second servomotor 222. Then, the shaft 266 (taper cone 258 for roughing) or the shaft 268 (taper cone 260 for finishing) is moved back and forth to a predetermined position (in the direction of arrow A), whereby the roughing grindstone 236 or the finishing machine is finished. An expanding force or a contracting force is generated on the articulating stone 238.
- the main shaft 224 is rotationally driven by the main shaft motor 221 and moved back and forth by the moving mechanism 226. Therefore, the honing procedure is performed on the cylinder block 308 while the coarse granite 236 and the finished processed granite 238 are selected as necessary.
- the cylinder block 308 which is a workpiece, is pressed by the tool head 212 of the complex machine tool 210 of the present embodiment, the cylinder block 308 can be formed by one chucking operation. After clamping and boring, the clamping can be subsequently carried out without unclamping. Therefore, it is possible to reduce the influence of the hacking, and to do a good accuracy. That is, since the error in the positioning system at the time of chucking is taken into consideration as the number of times of chucking increases, the machining allowance of the material increases, and if the machining allowance per unit machining time increases, heavy grinding occurs and the accuracy deteriorates. It becomes a tendency.
- the air micro detection means 244 detects the amount of change in the window 310 and the control unit 230 measures the processing elapsed time and the like. It is preferable to control the drive of the servomotor 220 and the second servomotor 222. In the multipurpose machine 210, the processing can be performed while changing the expansion force (shrinkage force) of the roughing processing grindstone 236 and the finishing processing grindstone 238 with high precision, so that more accurate honing processing can be realized.
- corrected NC data is created in the boring block of the bore of the cylinder block. Since the cylinder block having a desired roundness can be obtained without attaching the dummy head 304 or the like to the head, productivity is significantly improved.
- the expanding operation of the cutting tool 242, the rough processing granite 236, and the finishing processing granite 238 is performed by the first servomotor 220 and the second servomotor 222 to set the first gear set 216 and the second gearset 218. It is configured to be done through. For this reason, it is easy and precise to control the expansion position and the expansion force of the Neut 242, the coarse processed granite 236 and the finished processed granite 238.
- the main shaft 224 has the same diameter at the time of boring and the time of hoyun gukwa, and it is rotated as it is. That is, the spindle 224 can be handled mechanically as it is at the time of boring and boring, and no auxiliary mechanism or the like for changing the diameter is required.
- the main shaft 224 can be rotated at high speed, and at the same time, high-speed reciprocation operation can be performed at the time of hoyung kae Can.
- Modified NC data (When the bore 310 of the cylinder block 308 is processed into a desired shape by DN, the expansion of the boring bit is hydraulically controlled as in the above-mentioned prior art) Since it is difficult to finely control the force and the extended position, it may be difficult to realize the method for machining the bore of the cylinder block according to the present embodiment in a machine tool having such a configuration.
- the first servomotor 220 and the first gear set 216 are configured to perform the extension control of the shaft 268, that is, the cutting tool 242. There is. Therefore, it is possible to apply more accurate boring as compared with the above-described machine tool of the conventional configuration, and it is possible to realize the modified NC data (the boring method based on DN).
- a ring is provided between the pin-on gear 270 coupled to the drive shaft 220 a of the first servomotor 220 and the ball screw 274 for actually moving the shaft 268.
- a gear 272 intervenes. That is, the pin-on gear 270 and the ball screw 274 directly engage with the spiral of the ball and screw.
- the first servomotor 220 is intermittently rotated.
- rotation-stop or forward rotation ⁇ reverse rotation for example, at start-up or stop
- the rotational torque transmitted to the pinion gear 270 is transmitted to the ball screw 274 in an irregular fluctuation state (unstable jerky state). Be done.
- the shaft 268 performs unresponsive and irregular back and forth movement.
- the counter force 270 vibrates in the axial direction (arrow A direction) in response to the reaction force. Accordingly, the first servomotor 220 also vibrates.
- the first servo motor 270 is used.
- the rotational torque fluctuation transmitted to the pin-on gear 270 when the motor 220 is intermittently rotated / stopped / reversely / reversely is transmitted to the ring gear 272 first.
- the ring gear 272 is radially (thrust) supported on the bearings 282 and 284, the ring gear 272 rotates following the first servomotor 220 under the influence of irregular rotational torque fluctuation.
- the ring gear 272 and the ball screw 274 are joined by the spiral of the ball and the screw.
- the ring gear 272 receives the reaction force and is in the axial direction (direction of arrow A). It is likely to be shaken. As described above, since the ring gear 272 is radially (thrust) supported by the bearings 282, 284, it does not vibrate in the axial direction (see FIGS. 18 and 20).
- the ring gear 272 functions to shut off various vibrations in the first gear set 216. Therefore, even if the vibration generated in the cutting tool 242 due to the uneven shape of the processed surface (cutting surface) or cutting resistance is transmitted to the shaft 268, the vibration is blocked by the ring gear 272 and the first servo motor 220 etc. Will not be transmitted.
- the vibration blocking function by the ring gear 272 of the first gear set 216 as described above works in the same manner at the time of horning.
- the second gear set 218 has substantially the same configuration as the first gear set 216, and has the ring gear 288, it is possible to use a second gear set 218 (a rough hoe gear). Even when, as above Of course, the action of blocking the movement can be obtained. That is, in the complex machine tool 210, the ring gears 272, 288 function as a vibration blocking mechanism.
- the first gear set 216 and the second gear set 218 function as power conversion means for converting the rotational power from the first servomotor 220 and the second servomotor 222 into linear power to the shafts 266 and 268.
- the cutting tool 242 may be provided on the side of the taper cone 258 for welding. Also, for example, by providing a plurality of cutting tools 242, it is also possible to have different shapes.
- the tip portion of the taper cone for roe 258 is not limited to one divided into the above-described three-forked shape, and may be, for example, a forked shape or a four-forked shape. In this way, it is possible to easily change the number of coarse grinding stones 236 and the number of finishing grinding wheels 238.
- the processing method by the complex machine tool 210 is not limited to this method.
- a tool head (hoyung tool head, machining head) 410 according to an embodiment of the present invention which can be suitably applied to the complex machine tool 10, 210 according to each of the above embodiments is described.
- the machine tool (housing machine tool) 412 according to the third embodiment of the present invention on which the head 410 is mounted will be described as an example.
- the machine tool 412 inserts the tool head 410 into the workpiece W3 (for example, the cylinder bore of the cylinder block of the automobile engine), and the inner circumferential wall of the workpiece W3 It is a machine tool that carries out the 414-a horn car.
- the workpiece W3 for example, the cylinder bore of the cylinder block of the automobile engine
- the machine tool 412 is inserted into the workpiece W3 and has a tool head 410 which also has a substantially cylindrical shape capable of expanding or reducing the diameter, and a first hydraulic pressure for applying the expanding force to the tool head 410.
- Main shaft rotary shaft for housing cylinder 416 and second hydraulic cylinder 418, control circuit (control means, controller, supervisory control board) 420 for controlling the expansion force, first hydraulic cylinder 416 and second hydraulic cylinder 418 Section) 422, and a lifting hydraulic cylinder (moving means) 423 for moving the main shaft 422 up and down.
- the tool head 410 is alternately inserted and inserted into a body portion 424 having a substantially cylindrical shape with a hollow inside, and holes (guide holes) 425 radially formed at equal intervals on the circumferential surface of the body portion 424.
- Rough use A processing grinding wheel (first grinding processing tool, rough hoyung grinding wheel) 426 and a finishing grinding grinding wheel (second grinding processing tool, finishing hoyung's granite) 428 are included. Further, for example, four air micro detection means 431 are radially disposed on the peripheral surface of the main body portion 424 between the roughing processing stone 426 and the finishing grinding stone 428.
- the air micro detection means 431 ejects the air supplied from an air passage (not shown) formed in the tool head 410 from the air nozzle 431a (see FIG. 24), thereby the inner diameter of the inner peripheral wall 414a of the workpiece W3.
- the tool head 410 may be equipped with a tool holder 439 having a throwaway chip (not shown) attached to the outside tip.
- the tool holder 439 may be replaced with a bolt 439a. It has become.
- the tool holder 439 may be connected to an expansion / contraction means (not shown) similar to the expansion / contraction means for finishing described later, and may be movable (expanded / contracted) in a diametrical direction.
- the tool head 410 has three roughing grindstones 426 and three finishing grindstones 4 28 respectively, and the roughing grindstone 426 and the finishing grindstone 428 are respectively It is fixed to a roughing grinding tool head (first tool stand, roughing grinding wheel sieve) 432 and a finishing grinding wheel stand (second tooling table, finishing grinding stone) 434.
- the rough grinding wheel 426 and the finishing grinding stone 428 can be moved (expanded / contracted) in the diametrical direction (arrow B direction in FIG. 25) while being guided by the hole 425 at the same position in the axial direction of the tool head 410. It is.
- the tool head 410 is provided with a taper cone (first cone shaft) 436 for expanding the roughing grindstone head 432 in the diameter direction in a slidable manner and for roughing.
- a taper cone (second cone shaft) 438 for extending the diameter of the finished processed granite stone 434 in a diametrical direction slides separately from the rough processing taper cone 436. It is inserted freely.
- the inner inclined surfaces 432a and 432b of the roughing grindstone head 4 32 slidably contact with the tapered surfaces of the tapered portions 436a and 436b of the taper cone 436 for entrance. .
- the inner inclined surfaces 434a and 434b of the finished processed articulat shell 434 can slide. Abuts on doing.
- each clearance 440 of the roughly cut taper cones 436 is roughly finished.
- the tapered portions 438a, 438b of the taper cone 438 are inserted by force!, (See FIGS. 25 and 27).
- each portion divided in the forked shape is connected, that is, each A ring (lid member) 444 having a hole 443 is attached to close the opening of the gap 440.
- the ring 444 has, for example, an internal thread formed on the inner side surface of the recess 442, an external thread formed on the outer side surface of the ring 444, and is detachably fixed by screwing them.
- the method of fixing the ring 444 is not limited to the above method, for example, a method of fixing the ring 444 to the bottom of the recess 442 by bolting or a method of fixing the ring 444 in the recess 442 by press fitting or force tightening.
- methods such as fixing using an adhesive or welding may be mentioned.
- the tip of the taper cone 436 for injection is divided into three, and the opening of each gap 440 formed by the division is closed by the ring 444. Therefore, elongated holes (long hole-like hole portions) 446 are formed radially at equal intervals in the taper cone 436 for a mirror (see FIGS. 28 and 29), and finishing from the long holes 446 is carried out.
- the tapered portions 438a and 438b of the taper cone 438 for caul will face the finishing grinding wheel shoe 434.
- the tip of the finishing taper cone 438 is slidably inserted into the hole 443 of the ring 444 (see FIG. 25).
- the roughing taper cone 436 and the finishing cone for taper 438 are connected to draw bars (moving members, shafts) 448 and 450, respectively.
- each roughened granite 426 is guided to the hole 425 of the main body 424 and is contracted toward the opposite direction (diametrically inward) of the arrow B.
- each finish machined stone 428 is radially expanded while being guided to the hole 425 of the main body 424 in the direction of arrow B (the centrifugal direction of the diameter).
- shrinking the finishing forged granite 428 from the expanded state push the Derano's 50 downward and push down the finishing cone for taper cone 438 in the direction of arrow A2 to finish each finishing forged granite. While being guided by the hole 425 of the main body portion 424, the 448 is contracted in the opposite direction (diametrically inward) of the arrow B.
- the rough-machined stone platform 432, the finished-machined stone shell 434, the rough-machined taper cone 436, and the finish-curved taper cone 438 It functions as an expanding and contracting means for the grinding stone 428 and the finishing grinding stone 428.
- Tool head 410 configured as described above is coupled to main shaft 422 as shown in FIG. 23, and accordingly, tool head 410 is also rotated following rotation of main shaft 422. It is driven.
- the piston rod 423 a of the elevating hydraulic cylinder 423 supported by the support member (support portion) 452 is connected to the main shaft 422.
- a transmission gear 454 is fitted to the piston rod 423a, and a gear 457 fitted to the rotation shaft of the main spindle motor 455, which is a rotational driving means, is engaged with the transmission gear 454.
- An increase / decrease of the hydraulic pressure acting on the lifting hydraulic cylinder 423 can be achieved by using a hydraulic regulator (a pressure reducing regulator (depressurizing) as expansion / contraction control means interposed in oil passages 458a and 458b connecting the lifting hydraulic cylinder 423 and the oil source 456. Performed by the valve 460).
- the hydraulic regulator 460 is controlled by the control circuit 420, and the hydraulic pressure of the lifting hydraulic cylinder 423 is increased or decreased, whereby the lifting operation (direction of arrow A) of the piston rod 423a of the lifting hydraulic cylinder 423 is performed.
- taper cone 436 for tool head 410 and tape for finishing cover Pacone 438 is connected to drawbars 448 and 450, respectively (see FIG. 30), and each drone 448 and 450 is connected to the piston rod 416a of the first hydraulic cylinder 416 and the piston rod 418a of the second hydraulic cylinder 418. Each is connected.
- the piston rod 416a pulls up the drone 48 and the taper cone 436 for lifting is pulled up.
- the roughing grindstone 426 is expanded in the diametrical direction (arrow B direction).
- the drawbar 450 is drawn upward by the piston rod 418a, and the taper cone 438 for finishing force is raised upward.
- the finished processed granite 428 is expanded in the diametrical direction (arrow B direction).
- the expanding operations of the roughing grinding stone 426 and the finishing grinding stone 428 may be performed separately or simultaneously.
- the increase and decrease of the hydraulic pressure acting on the first hydraulic cylinder 416 as described above can be achieved by the hydraulic regulator as expansion / contraction control means interposed in the oil passage 466 connecting the first hydraulic cylinder 4 16 and the oil source 464. It is performed by the regulator (pressure reducing valve) 468.
- increase / decrease of the hydraulic pressure acting on the second hydraulic cylinder 418 can be achieved by an oil pressure regulator (pressure reducing valve) as expansion / contraction control means interposed in an oil passage 472 connecting the second hydraulic cylinder 418 and the oil source 470. It is done by 474.
- the hydraulic control by the hydraulic regulators 468 and 474 is performed based on an instruction from the control circuit 420.
- the inner circumferential wall portion 414a of the frame can be brought into contact with an appropriate expansion force.
- the piston rod 423a is lowered by the action of the lifting hydraulic cylinder 423. Then, along with the descent, the main shaft 422 is lowered and the tool head 410 is inserted into the workpiece W3.
- the processing with the roughing-machined shell 442 and the finishing-machined shell 442 is performed until the inner peripheral wall portion 414a of the workpiece W3 has a desired inner diameter and surface roughness.
- the control circuit 420 controls the hydraulic regulator 468, 474 to increase or decrease the hydraulic pressure to the first hydraulic cylinder 416 and the second hydraulic cylinder 418.
- the drawbars 448 and 450 pull up or lower the taper cone 436 for the mold and the taper cone 438 for the finishing force to expand the roughing artillery 426 and the finishing artillery 428, Alternatively, a contraction force is generated, and a force is applied to the workpiece W3 while selecting the rough finished granite 426 and the finished finished granite 428 as required.
- the air micro detection means 431 detects the change in the inner diameter of the inner peripheral wall portion 414a of the ground W3, and the control circuit 420 measures the processing elapsed time and the like. While controlling the hydraulic regulators 468 and 474, the processing is performed while changing the expansion force (contraction force) of the coarse granite 426 and the finish processed granite 428. Realize processing.
- FIGS. 37A and 37B By the way, when processing is performed while controlling the expansion force (contraction force) of the roughing processing stone 426 and the finishing processing stone 428 in this way, the above-described conventional configuration is shown in FIGS. 37A and 37B.
- the taper cone 510 for roe and the taper cone for finishing force are generated. If there is a difference between the pull-up force (depressing force) 512 and the expansion force (contraction force) of the roughing grindstone 502 and the finishing grindstone 504, a problem occurs!
- each gap 440 formed by dividing the tip of the taper cone 436 is blocked by the ring 444.
- a long hole 446 is formed in the taper cone 436 for the second end (see FIG. 29). Then, it is configured to face the finished artillery shell 434 for finishing, finishing for the Nono 438a, 438b, and 438b for the Nono 438 for Koloet (see Fig. 25).
- the ring 444 blocks the opening of the taper cone 436 for ⁇ . Press the taper cone 438 for finishing force onto the taper cone 436 for 3 ⁇ 43 ⁇ 4 ⁇ It is possible to significantly suppress the occurrence of pressing itching.
- the frictional force F2 caused by the processing reaction force F1 can be significantly reduced, and as described above, the rough processing granite 442 and the finishing are used. Even when processing is performed while controlling the expansion force (contraction force) of the processing wheel 428, the pull-in force of the Drono 48, 450 is linearly applied to the roughing processing wheel 426 and the finishing processing wheel 4 28. It can act as (contractile force).
- the graph of FIG. 31 shows the variation of the expansion pressure of the roughing grinding stone 502 when the honing processing is performed using the tool head 500 having the above-described conventional configuration
- the graph of FIG. 32 shows the same.
- the variation in the expansion pressure of the roughing grinding wheel 426 when carrying out the honing caw using the tool head 410 according to the present embodiment is shown.
- the ring 444 as a lid member is provided at the tip of the taper cone for light 436.
- the long hole 446 is formed by this, and when expanding the roughing grindstone 426 by pulling up the taper cone 436 for ft 3 ⁇ 4 ′ ′, it is configured to suppress the stagnation of the adhesive taper cone 43 6 by the processing reaction force F1. ing. For this reason, it is possible to significantly suppress the transmission loss of the expansion force to the coarsely processed granite 426 by pulling up the taper cone 436 for injection.
- the tapered portions 438a and 438b of the taper cone 438 for finishing force are arranged to face the long holes 446 formed in the taper cone 436 for glue by the ring 444. Becomes easy.
- the hole 443 of the ring 444 as a lid member is not always required.
- the tip of the taper cone 438 for finishing force is made to slide inside the taper cone 436 for lee. Oh.
- the tip portion of the taper cone 436 for gluing is not limited to one divided into the above-mentioned three-forked shape, and may be, for example, a forked shape or a four-forked shape. In this way, it is possible to easily change the number of coarse grinding stones 426 and the number of finishing grinding wheels 428.
- the configuration of the machine tool 412 on which the tool head 410 is mounted is not limited to the configuration described in the above embodiment.
- an electric mechanism may be applied instead of the first hydraulic cylinder 416, the second hydraulic cylinder 418, and the lifting hydraulic cylinder 423.
- the electric mechanism for example, instead of the hydraulic regulators 460, 468, 474 as expansion / contraction control means, a torque-controllable motor and the rotational movement of the motor are linear to the draw bar as the moving member. If it is equipped with a ball screw mechanism that transmits as motion and a torque control unit that controls the torque of the motor.
- the tool head 410 can also be mounted on the machine tool 10, 210.
- the machine tool 10 may be a machine tool 10a having a tool head 410 mounted thereon.
- the machine tool 210 may be a machine tool 210 a having a tool head 232 a provided with a ring 444 of the tool head 410.
- the roughing processing stone and the finishing grinding stone for example, a metal bond diamond grindstone, a vitrified bond grindstone, or the like is used.
- coarse grinding wheels are coarser than finishing grinding stones. Force may be the same or the same.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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CN200780017361.5A CN101443147B (zh) | 2006-03-13 | 2007-03-12 | 刀头、机床和使用该机床镗制缸体的镗孔方法 |
DE112007000560.2T DE112007000560B4 (de) | 2006-03-13 | 2007-03-12 | Werkzeugkopf, Werkzeugmaschine und Bohrverfahren zum Bohren eines Zylinderblocks unter Verwendung der Werkzeugmaschine |
US12/282,737 US8287214B2 (en) | 2006-03-13 | 2007-03-12 | Tool head, machine tool and boring method of bore of cylinder block using the machine tool |
GB0818163A GB2450445B (en) | 2006-03-13 | 2007-03-12 | Tool head,machine tool and boring method of bore of cylinder block using the machine tool |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
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JP2006-067214 | 2006-03-13 | ||
JP2006067214A JP4696004B2 (ja) | 2006-03-13 | 2006-03-13 | 複合工作機械 |
JP2006082618A JP5002177B2 (ja) | 2006-03-24 | 2006-03-24 | ホーニング工具ヘッド及び該ホーニング工具ヘッドを備えるホーニング工作機械 |
JP2006-082618 | 2006-03-24 | ||
JP2006148214A JP4533866B2 (ja) | 2006-05-29 | 2006-05-29 | 複合工作機械及び該複合工作機械を用いたシリンダブロックのボアのボーリング加工方法 |
JP2006-148214 | 2006-05-29 |
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WO2007119334A1 true WO2007119334A1 (ja) | 2007-10-25 |
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PCT/JP2007/054860 WO2007119334A1 (ja) | 2006-03-13 | 2007-03-12 | ツールヘッド、工作機械及び該工作機械を用いたシリンダブロックのボアの中ぐり加工方法 |
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US (1) | US8287214B2 (ja) |
CN (1) | CN103128554B (ja) |
DE (1) | DE112007000560B4 (ja) |
GB (1) | GB2450445B (ja) |
WO (1) | WO2007119334A1 (ja) |
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CN106964819B (zh) * | 2017-05-27 | 2018-03-23 | 江门市江海区创辉特电子有限公司 | 一种电路pcb板专用打孔装置 |
CN111360287A (zh) * | 2020-03-14 | 2020-07-03 | 安徽恒顺生产力促进中心有限公司 | 一种全自动定位打孔装置及其工作方法 |
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CN116532688B (zh) * | 2023-07-05 | 2023-09-01 | 济南压缩机厂有限公司 | 一种压缩机缸盖的打孔装置 |
CN117259820A (zh) * | 2023-11-23 | 2023-12-22 | 成都成缸液压设备制造有限公司 | 用于液压缸的加工装置 |
CN117259820B (zh) * | 2023-11-23 | 2024-02-09 | 成都成缸液压设备制造有限公司 | 用于液压缸的加工装置 |
Also Published As
Publication number | Publication date |
---|---|
GB2450445A (en) | 2008-12-24 |
DE112007000560B4 (de) | 2015-02-05 |
GB0818163D0 (en) | 2008-11-12 |
US8287214B2 (en) | 2012-10-16 |
US20090129879A1 (en) | 2009-05-21 |
CN103128554B (zh) | 2016-02-17 |
GB2450445B (en) | 2011-10-26 |
CN103128554A (zh) | 2013-06-05 |
DE112007000560T5 (de) | 2009-01-29 |
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