WO2004048029A1 - 工作機械の多軸スピンドルヘッド - Google Patents
工作機械の多軸スピンドルヘッド Download PDFInfo
- Publication number
- WO2004048029A1 WO2004048029A1 PCT/JP2003/014235 JP0314235W WO2004048029A1 WO 2004048029 A1 WO2004048029 A1 WO 2004048029A1 JP 0314235 W JP0314235 W JP 0314235W WO 2004048029 A1 WO2004048029 A1 WO 2004048029A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cutting fluid
- fluid supply
- supply passage
- cutting
- spindle
- Prior art date
Links
Classifications
-
- 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
- B23Q39/00—Metal-working machines incorporating a plurality of sub-assemblies, each capable of performing a metal-working operation
- B23Q39/02—Metal-working machines incorporating a plurality of sub-assemblies, each capable of performing a metal-working operation the sub-assemblies being capable of being brought to act at a single operating station
- B23Q39/021—Metal-working machines incorporating a plurality of sub-assemblies, each capable of performing a metal-working operation the sub-assemblies being capable of being brought to act at a single operating station with a plurality of toolheads per workholder, whereby the toolhead is a main spindle, a multispindle, a revolver or the like
- B23Q39/022—Metal-working machines incorporating a plurality of sub-assemblies, each capable of performing a metal-working operation the sub-assemblies being capable of being brought to act at a single operating station with a plurality of toolheads per workholder, whereby the toolhead is a main spindle, a multispindle, a revolver or the like with same working direction of toolheads on same workholder
- B23Q39/023—Metal-working machines incorporating a plurality of sub-assemblies, each capable of performing a metal-working operation the sub-assemblies being capable of being brought to act at a single operating station with a plurality of toolheads per workholder, whereby the toolhead is a main spindle, a multispindle, a revolver or the like with same working direction of toolheads on same workholder simultaneous working of toolheads
-
- 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
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/10—Arrangements for cooling or lubricating tools or work
- B23Q11/1015—Arrangements for cooling or lubricating tools or work by supplying a cutting liquid through the spindle
-
- 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
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/10—Arrangements for cooling or lubricating tools or work
- B23Q11/1015—Arrangements for cooling or lubricating tools or work by supplying a cutting liquid through the spindle
- B23Q11/1023—Tool holders, or tools in general specially adapted for receiving the cutting liquid from the spindle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2250/00—Compensating adverse effects during turning, boring or drilling
- B23B2250/12—Cooling and lubrication
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2250/00—Compensating adverse effects during milling
- B23C2250/12—Cooling and lubrication
-
- 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
- Y10T408/44—Cutting by use of rotating axially moving tool with means to apply transient, fluent medium to work or product
-
- 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
- Y10T408/44—Cutting by use of rotating axially moving tool with means to apply transient, fluent medium to work or product
- Y10T408/45—Cutting by use of rotating axially moving tool with means to apply transient, fluent medium to work or product including Tool with duct
-
- 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
- Y10T408/44—Cutting by use of rotating axially moving tool with means to apply transient, fluent medium to work or product
- Y10T408/45—Cutting by use of rotating axially moving tool with means to apply transient, fluent medium to work or product including Tool with duct
- Y10T408/455—Conducting channel extending to end of Tool
-
- 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
- Y10T409/00—Gear cutting, milling, or planing
- Y10T409/30—Milling
- Y10T409/303976—Milling with means to control temperature or lubricate
- Y10T409/304032—Cutter or work
Definitions
- the present invention relates to a multi-axis spindle head of a machine tool in which atomized lubricating oil is jetted from a tip of a cutting tool.
- a multi-axis spindle head of a machine tool exists, and its outline is, for example, as follows: a plurality of spindle shafts each having a cutting tool at a tip thereof are arranged in the same direction.
- the rear end of the cutting fluid supply passage which is the inner hole of the cutting fluid supply pipe provided in a non-rotating state at the center of rotation of these spindle shafts, communicates with a common sealed space formed at the rear of these spindle shafts.
- the mist of lubricating oil supplied to the common enclosed space is ejected from the tip of the corresponding cutting tool through the cutting fluid supply passage (for example, Japanese Registered Utility Model No. 300). No. 08566).
- the multi-axis spindle head is usually used so that a plurality of spindle axes cut a workpiece at the same time.
- a means for changing the flow rate of the mist-like lubricating oil flowing from the common enclosed space into the cutting fluid supply passage of each of the spindle shafts is provided. This is not the case, and therefore, depending on the spindle shaft, excessive or insufficient lubricating oil may be ejected from the tip of the cutting tool. This can result in poor quality cutting or wasted supply of lubricant.
- An object of the present invention is to provide a multi-axis spindle head of a machine tool capable of coping with such a situation. Disclosure of the invention
- the present invention provides a spindle motor having a plurality of spindle shafts each having a cutting tool at the tip thereof, and a cutting fluid supply passage formed at the rotation center of the spindle shaft.
- a mist-like lubricating oil that is communicated with a common sealed space formed at the rear part of the spindle shaft and is supplied to the common sealed space is ejected from the tip of a corresponding cutting tool in the passage through the cutting fluid supply passage.
- an opening degree changing means for changing the opening degree of the rear end opening of the cutting fluid supply passage is formed.
- the mist-like cutting fluid supplied into the common enclosed space passes through the cutting fluid supply passage associated therewith via the opening degree changing means and is jetted from the tip end of the cutting tool. . Therefore, the flow rate of the cutting fluid jetted from each of the spindle shafts differs in relation to the opening degree determined by the corresponding opening degree changing means.
- the present invention also provides a cutting fluid which is provided with a plurality of spindle shafts each having a cutting tool at the tip in the same direction, and which is an inner hole of a cutting fluid supply pipe provided in a non-rotating state at the rotation center of these spindle shafts.
- the rear end of the supply passage is communicated with a common sealed space formed at the rear of the spindle shaft, and the mist of lubricating oil supplied to the common sealed space passes through the cutting fluid supply passage to the corresponding cutting tool.
- an opening degree changing means for changing the opening degree of the rear end opening of the cutting fluid supply passage is formed.
- the following operation is obtained in addition to the operation of the above-mentioned invention, that is, the cutting fluid supply pipe is not rotated irrespective of the rotation of the corresponding spindle shaft. Since the liquid is kept in the state, the mist-like cutting fluid flowing in the cutting fluid supply pipe is not subjected to the centrifugal force due to the rotation of the spindle shaft, and liquefaction due to the centrifugal force is prevented. .
- the opening degree changing means is provided from the rear side of the rear end opening of the cutting fluid supply passage.
- An insertion member having a tapered portion inserted concentrically into the cutting fluid supply passage is provided.
- the degree of opening of the rear end opening of the cutting fluid supply passage is changed to be small or large by displacing the position of the tapered portion back and forth.
- the tapered portion forms an annular passage at an outer peripheral portion of the tapered portion at a rear end opening of the cutting fluid supply passage, and the annular passage forms mist-like cutting in the cutting fluid supply passage after passing through the passage. It contributes to making the liquid flow symmetrical and less biased.
- the insertion member is fixed to a rear surrounding wall of the common enclosed space, and is configured to be detached from the outside of the rear surrounding wall. According to this, the insertion member is easily replaced and mounted or removed, and a large change in the opening degree of the rear end opening of the cutting fluid supply passage can be easily performed.
- the front and rear positions of the insertion member are adjusted and changed from outside the rear side surrounding wall of the common enclosed space. According to this, it is possible to easily change and adjust the opening degree of the rear end opening of the cutting fluid supply passage by the opening degree changing means.
- a cutting fluid supply passage extending from a front end face to a rear end face thereof is formed in a thick portion of the insertion member. According to this, the cutting fluid supply passage makes it possible to supply the normal cutting fluid into the cutting fluid supply passage, and the normal cutting fluid thus replenished is cut from the common enclosed space by the cutting fluid. A part of the mist is efficiently atomized by the mist-like cutting fluid that flows into the liquid supply passage, and is transported to the tip of the cutting tool. In addition, the replenishment of the cutting fluid in the normal state contributes to greatly changing the flow rate of the cutting fluid ejected from the tip of the cutting tool at once. '' Brief description of the drawings
- FIG. 1 is a side view sectional view showing a multi-axis spindle head of a machine tool according to one embodiment of the present invention
- FIG. 2 is a view showing a XX section of FIG.
- FIG. 3 is an enlarged side view sectional view of the multi-axis spindle head
- FIG. 4 is a side view cross-sectional view showing a spindle shaft rear end of the multi-axis spindle head
- FIG. 5 is a side view sectional view showing a modification of the spindle shaft rear end
- FIG. 6 is a side view sectional view showing another modification of the spindle shaft rear end.
- FIG. 7 is a front view showing a processing state of the work.
- FIG. 8 is a side view showing a multi-axis spindle head according to a modification of the above embodiment.
- 1 is a bed
- 2 is a movable platform operably mounted in the front-rear direction f 1, f 2 via a guide track 1 a on the upper surface of the bed
- Reference numeral 3 denotes a multi-axis spindle head fixed on the upper surface of the moving table 2.
- a head frame 4 fixed to the movable base 2 is provided, and a spindle portion 5 having a rear case frame 5a and a front case frame 5b is provided on the front surface of the frame 4.
- the rear case frame 5 a has an upright wall 6 and a side wall 7.
- a supply path 6a for supplying mist-like cutting fluid from the outside is formed in the thickness of the upright wall portion 6, and a rear surrounding wall for forming a common enclosed space 8 on the rear surface of the upright wall portion 6. 8a is fixed by bolts, and the supply path 6a communicates with the common enclosed space 8.
- the front case frame 5b is composed of an upright wall 9 and a spindle case 10 and a force.
- the upright wall portion 9 is bolted to the rear case frame 5a, and a through hole 9a through which the spindle shaft 11 passes is provided at a front portion of the common enclosed space 8 as shown in FIG. It is formed for each axis 11.
- the spindle case 10 includes a rectangular outer wall 12 surrounding the plurality of spindle shafts 11 and an intermediate wall 13 surrounding the spindle shaft 11 inside the outer wall 12.
- a circular through hole a corresponding to each spindle shaft 11 is formed in the front portion of the outer wall portion 12 as shown in FIG. 3, and the front surface of each through hole a is provided with a through hole for the spindle shaft 11. Before End face force par 14 is bolted.
- Each spindle shaft 11 is composed of a large-diameter front portion 11a and a small-diameter rear portion 11b, bearings 15 fitted in through holes a and bearings 16 fitted in through holes 9a. And are rotatably supported at a fixed position on the front case frame 5b.
- a straight center hole b is formed at an axial position at the center of each spindle shaft 11, and a front portion of the center hole b is formed as a stepped large diameter portion b 1.
- 17 is a cover member for covering the front surface of the front end face cover 14 and is fixed to the spindle shaft 11.
- 18 is an oil seal fitted inside the front end face cover 14. is there.
- Reference numeral 19 denotes a cutting tool holding cylinder member fitted and fixed at a specific position of the large diameter portion b1 of the center hole b
- reference numeral 20 denotes a cutting tool positioned in the cutting tool holding cylinder member 19.
- passage holes c 1 and .c 2 are formed at respective axial positions at the center of the cutting tool holding tubular member 19 and the cutting tool 20.
- a thin, straight cutting fluid supply pipe 21 of the center hole b is provided concentrically with the spindle shaft 11.
- the rear end of the supply pipe 21 is located in a hole 6b provided in the upright wall 6 of the rear case frame 5a, and is fixed to the upright wall 6 via a joint 22 packing.
- the cutting fluid supply passage 21 a which is an inner hole of the passage, is air-tightly communicated with the common enclosed space 8.
- the front end of the supply pipe 21 is substantially airtightly inserted into the passage hole c1 of the cutting tool holding member 19 via the large diameter portion b1 of the center hole b and the rear end.
- a bearing (roller bearing) 23 is provided between the front end of the cutting fluid supply pipe 21 and the large diameter portion 11a of the spindle shaft 11, and the bearing 23 is provided with a spindle shaft 1 This contributes to a structure in which the smooth rotation of 1 is not hindered by the cutting fluid supply pipe 21.
- Each of the spindle shafts 11 is driven by a spindle drive motor 24 mounted on the head frame 4 shown in FIG. 1, and is specifically configured as follows. That is, the driving shaft 25 connected to the output shaft of the main shaft drive motor 24 is fixed at a fixed position inside the gear chamber 26 surrounded by the front and rear case frames 5a and 5b. A driving gear 27 is formed at the tip of the driving shaft 25 so as to be rotatable. On the other hand, in the gear chamber 26, a driven gear 28 is fixed at the rear end of each spindle shaft 11, and the driven gear 28 and the driving gear 27 are composed of a plurality of intermediate gears 29. Linked with columns.
- a workpiece fixing table 30 is provided, which is arranged at a constant relative to the bed 1. At this time, the surrounding frame member 31 is fixed around the workpiece support surface 30a of the workpiece fixing base 30.
- Reference numeral 3 2 denotes a cover device which is attached to the front and rear directions f 1 and f 2 so as to be extendable and contractable. The part is to be enclosed in a state where only the lower side is open.
- 3 3 is a hopper-type guideway for guiding chips and cutting fluid, which is arranged so as to cover the lower surface of the cover device 3 2.
- reference numeral 35 denotes a cutting fluid atomizer for generating a mist-like cutting fluid, which includes a compressed air supply pipe 36, a filter 37a, a pressure regulator 37b, an atomizer 37c and A cutting fluid delivery pipe 38 is provided.
- the cutting fluid delivery pipe 38 communicates with the supply path 6a via a pipe 39, and an electromagnetic valve 40 that is opened and closed at appropriate times by a control device (not shown) is provided in the pipe 39. is there.
- an opening degree changing means 41 for changing the opening degree of the rear end opening of the passage 21a is formed on the rear side of the cutting fluid supply path 21a.
- the opening degree changing means 41 includes a tapered portion 42a concentrically inserted into the cutting fluid supply passage 21a from behind the rear end opening of the cutting fluid supply passage 21a.
- An insertion member 42 is provided.
- the insertion member 42 has a rear portion formed with a male screw portion 42b, and at the same time, a wrench is engaged with a rear end portion of the male screw portion 42b to reduce the rotational force as a whole. Grant The rotation input section 42c is formed.
- a portion facing the taper hole portion d forming the rear end opening of the cutting fluid supply passage 21a of the rear surrounding wall 8a was provided with a female screw portion e1 facing forward and a seal portion e2.
- a through hole e is formed, and the insertion member 42 is fixed via the female screw portion e1.
- the tapered portion 42a is inserted into the common enclosed space 8 from the rear side of the rear surrounding wall 8a through the through hole e, and then the cutting fluid supply passage 21a Partially insert the inner part of the rear end of the female screw part, and further screw the male screw part 42b into the female screw part e to an appropriate length, and then screw the lock nut 43 into the male screw part 42b.
- the male screw portion 4 2 b and the female screw portion e 1 are fastened to support the tapered portion 42 a substantially concentrically with the tapered hole portion d forming the rear end opening of the cutting fluid supply passage 21 a.
- the opening degree of the tapered hole portion d of the cutting fluid supply passage 21a is determined by displacing the front and rear positions of the tapered portion 42a with respect to the cutting fluid supply passage 21a by rotating the male screw portion 42b. Specifically, by displacing the male screw portion 42b forward with respect to the female screw portion e1, the gap between the cutting fluid supply passage 21a and the tapered portion 42a is changed. The width of the annular passage g formed in the annular passage g is continuously reduced gradually and becomes smaller. Conversely, by displacing the male screw portion 42b backward with respect to the female screw portion e1, the annular passage g is formed. Are continuously and gradually increased.
- the above-mentioned insert member 42 may be deformed into an insert member 42A as shown in FIG. 5, that is, the cutting fluid reaching the thick portion from the front end surface 1 to the rear end surface h2.
- a supply passage 4 2 d is formed.
- a normal cutting fluid supply pipe 45 extending from the normal cutting fluid supply device 44 is connected to the cutting fluid supply passage 42d.
- the normal cutting fluid supply device 4 4 is provided with a cutting fluid tank 4 6 in which the normal cutting fluid is stored, and the normal cutting fluid in the tank 46 is sucked by a specific amount via the suction pipe 47 to supply the cutting fluid.
- a reciprocating pump 48 that is repeatedly fed into the passage 42d, a pneumatic reciprocating cylinder device 49 for reciprocating the pump 48, and a compressed air supply pipe 5 connected to the cylinder device 49
- the solenoid valve 51 is provided in the middle of 0 and is opened and closed as needed by a control device (not shown).
- the cutting fluid is supplied into the cutting fluid supply pipe 21 and the operating speed of the reciprocating pump 48 is varied by changing the opening and closing speed of the solenoid valve 51 so as to change the supply flow rate of the normal cutting fluid. It is made to change to big and small.
- the insertion member 42 may be transformed into an insertion member 42B as shown in FIG. 6, that is, the portion of the male screw portion 42b is formed into a round bar portion 42e.
- a flange 42 f is formed at the rear end of the round bar 42 e.
- the insertion member 42B is fixed by forming the female screw portion e1 of the rear side wall 8a as a simple circular hole e3, and forming the tapered portion 4 from the rear side of the circular hole e3. 2a is inserted into the common sealed chamber 8, and further into the rear end of the cutting fluid supply pipe 21 to place the round bar-shaped part 42e in the circular hole e3.
- the flange 42 f is brought into contact with the outer surface of the rear wall 8 a, and the flange 42 f and the rear wall 8 a are fastened with bolts.
- the degree of opening of the rear end opening d of the cutting fluid supply passage 21a is determined by the front and rear positions of the tapered portion 42a with respect to the cutting fluid supply passage 21a and the outer surface of the rear surrounding wall 8a and the flange portion 42f. This is changed by changing the thickness of the spacer 52 interposed between the two, and specifically, by reducing the thickness of the spacer 52, The width of the annular passage g formed between the liquid supply passage 21a and the tapered portion 42a is reduced and reduced, and conversely, by increasing the thickness of the spacer 52, The width of the annular passage g increases and increases.
- FIG. 7 is a front view showing a processing state of the work. As shown in this figure, it is assumed that four relatively shallow holes m1 are drilled on the upper side of the front surface of the rectangular workpiece w, and four relatively deep holes m2 are drilled on the lower side. Also, based on empirical rules or from the results of preliminary processing, it is preferable that the flow rate of the cutting fluid when processing a relatively shallow hole ml be about 10 milliliters per hour, and that the relatively small hole m 2 It has been found that it is preferable to process it at about 50 milliliters per hour.
- each insert member 42 should rotate the insertion member 42 by applying a rotational force to the rotation input section 42c by loosening the lock nut 43 as necessary and using a wrench.
- the front and rear positions of each insert member 42 are changed and adjusted so that the flow rate of the cutting fluid from each cutting tool 20 becomes the above-mentioned specific flow rate corresponding to the holes ml and m2 to be processed. Tighten the lock nut 43 to keep the position.
- the moving table 2 is moved backward from the position in FIG. 1 to f2, and the workpiece w is fixed to the workpiece supporting surface 30a of the workpiece fixing table 30.
- the spindle drive motor 24 is operated. As a result, the rotation of the motor 24 is transmitted to the respective spindle shafts 11 via the gear wheels 27, 29, 28, and the respective spindle shafts 11 are guided by the bearings 15, 16 to smoothly. Rotate. During this rotation, the cutting fluid supply pipe 21 is fixed to the upright wall 6 and is thus kept in a non-rotating state.
- the solenoid valve 40 is opened in connection with the operation of the main shaft drive motor 24.
- the compressed air supplied from the compressed air supply pipe 36 flows through the atomizing device 37c, and the atomizing device 37c generates a mist-like cutting fluid based on the spraying principle.
- the mist-like cutting fluid generated in this way reaches the common enclosed space 8 via the supply passage 6a, and from the inside of the common enclosed space 8, an appropriate opening is formed by the inlet member 42 of the opening degree changing means 41.
- the cutting fluid supply pipes 21 are supplied into the respective cutting fluid supply pipes 21 through the tapered holes d at the rear end of the cutting fluid supply pipes 21, and then flow toward the front f 1. Since the cutting fluid supply pipe 21 is kept in a non-rotating state, the mist of the cutting fluid flowing forward in the cutting fluid supply pipe 21 does not change even if the spindle shaft 11 rotates at high speed.
- the cutting fluid in the cutting fluid supply pipe 21 exits from the front end of the cutting fluid supply pipe 21, it reaches the passage hole c 1 in the cutting tool holding cylinder member 19, and then passes through the passage hole c 2 of the cutting tool 20. After that, it is ejected from the tip of the cutting tool 20. Under this jetting state, the moving table 2 is moved to the front f1, and when this moving amount reaches a certain size, the tip of the cutting tool 20 reaches the workpiece w, which is to be machined. Become. During this processing, a mist of cutting fluid is jetted from the tip of the cutting tool 20 at a specific flow rate corresponding to the holes ml and m2 to be processed by the cutting tool 20, so that the processing of each cutting tool 20 is performed. The parts are effectively lubricated with no excess or shortage.
- the flow rate of the cutting fluid corresponding to the holes ml and m2 is greatly increased by, for example, 15 In some cases, it may be required to set it to about 0 milliliter.In such a case, the insertion member 42 corresponding to the holes ml and m2 is replaced with the insertion member 42A shown in FIG. That's it.
- another solenoid valve 51 is also operated at an appropriate speed in connection with the operation of the solenoid valve 40 in the above-mentioned use example, whereby the mist-like cutting fluid supplied into the common enclosed space 8 is formed.
- the normal cutting fluid in 6 is supplied at a specific flow rate into the cutting fluid supply passage 4 2 d by the reciprocating pump 48, and the cutting fluid remains in a normal liquid state from the opening of the front end face h 1 of the insertion member 42 A. It is captured in the supply pipe 21.
- the flow rate of the cutting fluid flowing through the cutting fluid supply pipe 21 becomes, for example, 150 milliliters per hour.
- the cutting fluid replenished from the cutting fluid supply passage 21a is finely divided by the flow energy of the mist-shaped cutting fluid that flows symmetrically into the cutting fluid supply pipe 21 from the annular passage g.
- the cutting fluid is evenly dispersed, and thereafter, is stably ejected from the tip of the cutting tool 20 together with the mist-like cutting fluid flowing in from the annular passage g.
- the cutting fluid When the cutting fluid is replenished from the cutting fluid replenishing passage 42 d in this way, the replenishing cutting fluid is not a mist but a normal liquid, so by changing the flow rate to be large or small, the cutting fluid 20 The flow rate of the jetted cutting fluid changes greatly. Therefore, even if the flow rate of the atomized cutting fluid supplied through the annular passage g is about several tens of milliliters per hour, the cutting tool 20 The amount of cutting fluid ejected from the tip is easily several hundred milliliters per hour.
- the insert member 42 in the above use example may be changed to the insert member 42B shown in FIG. 6.
- the insert member 42B becomes a round bar-shaped portion 42e and a circular shape.
- Hole e Since the positioning is performed at 3, the positioning is performed more accurately than the insertion members 42, 42A, which are positioned via the male screw portion 42b or the female screw portion e1.
- the concentricity between the tapered portion 4 2 a of the member 4 2 B and the tapered hole d which is the rear end of the cutting fluid supply pipe 21 is improved, and the flow of the mist cutting fluid in the cutting fluid supply pipe 21 is improved.
- FIG. 8 is a side view sectional view showing a multi-axis spindle head according to a modification of the previous embodiment.
- the cutting fluid supply pipe 21 in the previous embodiment is not provided.
- the small diameter shaft portion 53 is extended rearward from the rear end of the spindle shaft 11 and the rear portion is provided. The end is located in the common closed chamber 8 through the through hole 6 a of the upright wall portion 6, and the center hole b of the spindle 11 is extended to the rear end of the small-diameter shaft portion 53.
- a seal member 54 is provided to keep the space between the inner peripheral surface and the outer peripheral surface of the small-diameter shaft portion 53 hermetically in a normal state allowing rotation of the small-diameter shaft portion 53. I have.
- the center hole b of the spindle shaft 11 and the small-diameter shaft portion 53 is used as a cutting fluid supply passage 21a, and each of the passages 21a is provided with the same opening degree changing means 4 as in the previous embodiment. 1 is formed, and the mist cutting fluid supplied into the common closed chamber 8 is ejected from the tip of the cutting tool 20 via the cutting fluid supply passage 21a.
- the cutting fluid can be spouted from the tip of the cutting tool of each spindle shaft at an appropriate flow rate, so that each spindle shaft has high quality and high quality. It is possible to perform efficient processing.
- the cutting fluid is ejected from the tip of the cutting tool of each spindle shaft with a sufficient flow rate. Liquefaction of the mist-like cutting fluid flowing in the spindle shaft even when the spindle shaft is rotated at a high speed, so that each spindle shaft can perform high-quality and efficient machining. Is what you can do.
- the degree of opening of the rear end opening of the cutting fluid supply passage can be changed to be small or large, and the outer periphery of the tapered portion can be changed at the rear end opening of the cutting fluid supply passage.
- the flow of the mist-like cutting fluid in the cutting fluid supply passage can be made less uneven.
- the insertion member can be easily replaced and mounted or removed, and the degree of opening of the rear end opening of the cutting fluid supply passage can be easily changed greatly. Further, it is possible to easily change and adjust the opening degree of the rear end opening of the cutting fluid supply passage by the opening degree changing means.
- the normal cutting fluid can be supplied from the cutting fluid supply passage into the cutting fluid supply passage, and the thus supplied normal cutting fluid is supplied to the mist that has flowed into the cutting fluid supply passage from the common enclosed space.
- a part of the cutting fluid can be efficiently miniaturized efficiently by the flow energy of the cutting fluid, and can be moved to the tip of the cutting tool stably.
- the flow rate of the cutting fluid to be used can be greatly changed at once.
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- Mechanical Engineering (AREA)
- Auxiliary Devices For Machine Tools (AREA)
Abstract
Description
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Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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AU2003277628A AU2003277628A1 (en) | 2002-11-25 | 2003-11-07 | Multi-shaft spindle head of machine tool |
US10/533,949 US7214012B2 (en) | 2002-11-25 | 2003-11-07 | Multi-shaft spindle head of machine tool |
Applications Claiming Priority (2)
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JP2002340852A JP3809610B2 (ja) | 2002-11-25 | 2002-11-25 | 工作機械の多軸スピンドルヘッド |
JP2002-340852 | 2002-11-25 |
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WO2004048029A1 true WO2004048029A1 (ja) | 2004-06-10 |
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PCT/JP2003/014235 WO2004048029A1 (ja) | 2002-11-25 | 2003-11-07 | 工作機械の多軸スピンドルヘッド |
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Country | Link |
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US (1) | US7214012B2 (ja) |
JP (1) | JP3809610B2 (ja) |
KR (1) | KR100620315B1 (ja) |
AU (1) | AU2003277628A1 (ja) |
WO (1) | WO2004048029A1 (ja) |
Families Citing this family (4)
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KR100849406B1 (ko) * | 2006-12-04 | 2008-07-31 | 임화용 | 퀼 스핀들 유니트 |
JP5277070B2 (ja) * | 2009-05-21 | 2013-08-28 | 本田技研工業株式会社 | フライス加工方法 |
US8545137B2 (en) * | 2010-03-30 | 2013-10-01 | Nippon Steel & Sumitomo Metal Corporation | Cutting method of steel for machine structural use |
US9808815B2 (en) * | 2013-06-03 | 2017-11-07 | The Board Of Trustees Of The University Of Illinois | Atomizing-based cutting fluid delivery system and method |
Citations (2)
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JPH05162046A (ja) * | 1991-12-11 | 1993-06-29 | Mitsubishi Heavy Ind Ltd | ミストアプリケーター装置 |
JP3060856U (ja) * | 1999-01-18 | 1999-09-07 | ホーコス株式会社 | 工作機械の多軸スピンドルヘッド |
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CH326646A (de) * | 1953-10-15 | 1957-12-31 | Maskinfirma R L Carlstedt | Kühlmittelzufuhrvorrichtung an Bohrmaschinen |
US2946244A (en) * | 1958-12-24 | 1960-07-26 | Harlan James Maynard | Method and apparatus for mist cooling cutting tools |
US3478843A (en) * | 1968-06-06 | 1969-11-18 | Daystar Corp | Mist type coolant spray unit |
US4345668A (en) * | 1980-07-07 | 1982-08-24 | Gaunt Frank L | Very low flow rate lubricant metering apparatus and method for a tool and workpiece |
EP0332328B1 (en) * | 1988-03-03 | 1992-09-16 | Yoshino Seiki Inc. | Mist-spouting type drilling device |
US5006021A (en) * | 1988-11-16 | 1991-04-09 | Ltv | High pressure gas drilling |
DE4200808C2 (de) * | 1992-01-15 | 1996-11-14 | Lutz Eugen Masch | Bearbeitungseinheit mit einer angetriebenen rotierenden Spindel |
JP2976364B2 (ja) * | 1995-03-10 | 1999-11-10 | 株式会社牧野フライス製作所 | 回転体への加工液供給装置 |
JP2687110B2 (ja) * | 1995-08-30 | 1997-12-08 | ホーコス株式会社 | 工作機械の主軸装置 |
EP0978350B1 (en) * | 1998-01-23 | 2006-03-01 | Horkos Corp | Main spindle apparatus for machine tools, and multispindle head for machine tools |
JP4193076B2 (ja) * | 1998-02-20 | 2008-12-10 | ホーコス株式会社 | 工作機械の主軸装置 |
JP2001150295A (ja) * | 1999-11-25 | 2001-06-05 | Brother Ind Ltd | 工作機械用主軸装置 |
JP3549194B2 (ja) * | 2000-02-22 | 2004-08-04 | 日本スピードショア株式会社 | 工作加工方法およびそれに用いる霧状体供給装置 |
JP3353149B2 (ja) * | 2000-08-28 | 2002-12-03 | ホーコス株式会社 | 工作機械の主軸装置 |
JP3261584B1 (ja) * | 2000-09-01 | 2002-03-04 | ホーコス株式会社 | 工作機械の主軸装置 |
JP2002154033A (ja) * | 2000-09-07 | 2002-05-28 | Ekoregu:Kk | 工作加工方法およびそれに用いる霧状体供給装置 |
JP3650963B2 (ja) * | 2000-10-26 | 2005-05-25 | フジビーシー技研株式会社 | 切削オイル塗布装置 |
JP3364802B2 (ja) * | 2001-06-04 | 2003-01-08 | ホーコス株式会社 | 工作機械の主軸装置 |
JP3521389B2 (ja) * | 2001-08-10 | 2004-04-19 | ホーコス株式会社 | 多軸工作機械と、多軸工作機械における各スピンドルの潤滑剤ミスト流量の最適化方法 |
JP2004136419A (ja) * | 2002-10-21 | 2004-05-13 | Daido Metal Co Ltd | 工作機械装置 |
-
2002
- 2002-11-25 JP JP2002340852A patent/JP3809610B2/ja not_active Expired - Fee Related
-
2003
- 2003-11-07 AU AU2003277628A patent/AU2003277628A1/en not_active Abandoned
- 2003-11-07 US US10/533,949 patent/US7214012B2/en not_active Expired - Fee Related
- 2003-11-07 WO PCT/JP2003/014235 patent/WO2004048029A1/ja active Application Filing
- 2003-11-07 KR KR1020057009393A patent/KR100620315B1/ko not_active Expired - Fee Related
Patent Citations (2)
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JPH05162046A (ja) * | 1991-12-11 | 1993-06-29 | Mitsubishi Heavy Ind Ltd | ミストアプリケーター装置 |
JP3060856U (ja) * | 1999-01-18 | 1999-09-07 | ホーコス株式会社 | 工作機械の多軸スピンドルヘッド |
Also Published As
Publication number | Publication date |
---|---|
KR20050086798A (ko) | 2005-08-30 |
AU2003277628A1 (en) | 2004-06-18 |
JP2004174621A (ja) | 2004-06-24 |
KR100620315B1 (ko) | 2006-09-06 |
US20050271484A1 (en) | 2005-12-08 |
US7214012B2 (en) | 2007-05-08 |
JP3809610B2 (ja) | 2006-08-16 |
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