CN202528008U - Machine tool - Google Patents

Machine tool Download PDF

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Publication number
CN202528008U
CN202528008U CN2012201153104U CN201220115310U CN202528008U CN 202528008 U CN202528008 U CN 202528008U CN 2012201153104 U CN2012201153104 U CN 2012201153104U CN 201220115310 U CN201220115310 U CN 201220115310U CN 202528008 U CN202528008 U CN 202528008U
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CN
China
Prior art keywords
main shaft
main
lathe
air
shaft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CN2012201153104U
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Chinese (zh)
Inventor
寺阪直人
伊藤惠史
本田亮
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Brother Industries Ltd
Original Assignee
Brother Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Brother Industries Ltd filed Critical Brother Industries Ltd
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Publication of CN202528008U publication Critical patent/CN202528008U/en
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    • 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
    • B23Q11/12—Arrangements for cooling or lubricating parts of the machine
    • B23Q11/121—Arrangements for cooling or lubricating parts of the machine with lubricating effect for reducing friction
    • B23Q11/123—Arrangements for cooling or lubricating parts of the machine with lubricating effect for reducing friction for lubricating spindle bearings
    • 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
    • B23Q11/14—Methods or arrangements for maintaining a constant temperature in parts of machine tools
    • B23Q11/145—Methods or arrangements for maintaining a constant temperature in parts of machine tools using a jet of gas or cutting liquid
    • 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
    • B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
    • B23Q5/02—Driving main working members
    • B23Q5/04—Driving main working members rotary shafts, e.g. working-spindles

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Auxiliary Devices For Machine Tools (AREA)
  • Turning (AREA)

Abstract

The utility model discloses a machine tool, which comprises a main shaft supported by bearings in a main shaft head in a rotating way. Air jetting parts for jetting air to the main shaft are arranged in the main shaft head of the machine tool. The main shaft is cooled by the air jetted by the air jetting parts, so that the temperature rise of the main shaft and the bearings supporting the main shaft can be suppressed. Therefore, lubricating grease for lubricating the bearings is difficult to deteriorate, and the durability of the bearings and the main shaft can be improved. The main shaft does not wobble during machining, so that reduction in the machining efficiency can be avoided.

Description

Lathe
Technical field
The utility model relates to a kind of comprising cutter is kept and the lathe of the main shaft that rotates.
Background technology
Japanese discloses the 2006-82175 communique and discloses lathe, and this lathe comprises the main shaft that cutter is kept and rotates.The main tapping of box-shaped is portion's supporting spindle within it.Main shaft central axis around above-below direction under the driving of drive source (Spindle Motor) rotates.Spindle Motor is fixed in the top of main tapping, and is connected with the upper end of main shaft through shaft coupling.Main tapping rises, descends under the driving of Z axle motor.Cutter rises, descends with main tapping, and rotates with main shaft, thus processing work.Through being positioned at the bearing that above-below direction leaves the position, main shaft supporting is in main tapping.Bearing is an angular contact ball bearing, through to its pressurization, prevents that main shaft from rocking at above-below direction.Bearing adopts grease lubrication.Adding man-hour, main shaft is rotation at a high speed under the state of bigger load.The temperature of lubricating grease rises because of the high speed rotation of main shaft.Lubricating grease meeting deterioration after temperature rises then can't be to the bearing sufficient lubrication.Therefore, bearing can thermal expansion.Main shaft rocks because of the difference of the coefficient of thermal expansion of the inner ring of bearing and outer ring, and its machining accuracy descends.
The utility model content
The purpose of the utility model is to suppress the temperature rising of main shaft and bearing through utilizing air cooling main shaft, to prevent bearing lubrication rocking with the deterioration of lubricating grease, main shaft.
In the lathe of technical scheme 1, will be connected with drive source at the main shaft that the main tapping inner bearing is supported, utilize this drive source driving main shaft rotation, said lathe comprises air ejection portion in said main tapping, this air ejection portion is towards said main shaft ejection air.Air ejection portion sprays air to main shaft in main tapping.The air cooling main shaft that is sprayed, the temperature that suppresses main shaft and bearing rises.Therefore, the lubricated of bearing is not easy deterioration with lubricating grease, and the durability of bearing and main shaft improves.The main shaft work in-process can not rock, thereby machining accuracy does not descend.
The position of the connecting portion of said main shaft and said drive source is left by the said air ejection portion of the lathe of technical scheme 2 being located axially at of said main shaft.Can under the situation of the influence of the member (shaft coupling, presses lever etc.) around the connecting portion that does not receive main shaft and drive source, utilize the air cooling main shaft that is sprayed reliably from the air of air ejection portion ejection.
The said air ejection portion of the lathe of technical scheme 3 has the puff prot towards said main shaft, and is the cylindrical shell of installing with the mode that protrudes in the said main tapping.Be installed on main tapping as long as will have the cylindrical shell of puff prot, just can constitute air ejection portion simply.
The said cylindrical shell of the lathe of technical scheme 4 with said main shaft intersect in protruding in said main tapping, said puff prot is located on the perisporium of said cylindrical shell.Through the installment state that changes cylindrical shell regulate puff prot towards, can be exactly to main shaft ejection air.The air cooling main shaft that is sprayed, the temperature that can suppress main shaft and bearing reliably rises.
In the lathe of technical scheme 5, said puff prot is arranged to a plurality of, and arranges on same the straight line on the perisporium that is arranged on said cylindrical shell.Cylindrical shell is from a plurality of puff prot ejection air, and the air that is sprayed is with around the wide scope cooling main shaft, thereby the temperature that can suppress main shaft and bearing reliably rises.
The said main tapping of the lathe of technical scheme 6 is included near the exhaust outlet of the opening of connecting portion of said main shaft and said drive source.Exhaust outlet will cool off the air that uprises temperature after the main shaft and be discharged to outside the main tapping.Heat can not be diffused in the main tapping, thereby the temperature that can suppress main shaft and bearing reliably rises.
In the lathe of technical scheme 7; Said drive source is the motor that is installed on said main tapping; Said lathe comprises the shaft coupling that the output shaft in the said main tapping of extending to of said motor is connected with said main shaft; Said air ejection portion is disposed at the position relative with said shaft coupling, or is disposed at a side of leaning on said motor than said shaft coupling.Main shaft is connected with the output shaft of motor through shaft coupling.The temperature of shaft coupling rises because of receiving from the heat of motor transmission.Air ejection portion sprays air to shaft coupling, or to the side ejection air that leans on motor than shaft coupling, thereby the air that is sprayed can cool off shaft coupling, and the temperature that suppresses main shaft and bearing rises.
Description of drawings
Fig. 1 is the longitudinal section of machine tool chief axis head.
Fig. 2 is the front view of main tapping.
Fig. 3 is the stereogram that decomposes a main tapping part.
Fig. 4 is the amplification view of the major part of lathe.
Fig. 5 is the stereogram of inflator.
Fig. 6 is the front view of inflator.
Fig. 7 is the side view of inflator.
Fig. 8 is the major part amplification view of the lathe of alter mode.
Fig. 9 is the major part amplification view of the lathe of alter mode.
Figure 10 is the major part amplification view of the lathe of alter mode.
The specific embodiment
Describe with reference to the preferred implementation of accompanying drawing the utility model.Employed direction in following explanation (all around, up and down) is represented with arrow in Fig. 1～Fig. 4.
As shown in Figure 1, lathe comprises main tapping 1 and main shaft 3.Main tapping 1 is hollow casing,
Column (not shown) on pedestal (not shown) rises, descends.Lathe comprises workbench (not shown).Fore-and-aft direction, left and right directions move workbench in the pedestal upper edge.Main tapping 1 comprises carrying cylinder 11 in its preceding bottom.Carrying cylinder 11 is the cylinders that extend along the vertical direction.The bearing 2 that is disposed at the above and below in the carrying cylinder 11 is respectively so that main shaft 3 revolvable mode supporting spindles 3.Bearing 2 is angular contact ball bearings.The bearing 2 of above and below keeps separately through tubular spacer member 16, threaded collar 31 is executed tight in the threaded portion of being located on the main shaft 3, and to its pressurization, the state lower support main shaft 3 that bearing 2 does not make main shaft 3 rock.Main shaft 3 rotates under the driving of Spindle Motor 4.Spindle Motor 4 is installed on the front upper part of main tapping 1.Spindle Motor 4 has and protrudes in the main tapping 1 and the output shaft 41 that extends downwards.Main shaft 3 is outstanding in main tapping 1 from the upper opening of carrying cylinder 11, and extends to the top.The upper end of main shaft 3 is connected with the bottom of output shaft 41 through shaft coupling 5.The rotating tee of Spindle Motor 4 is crossed shaft coupling 5 and is delivered to main shaft 3.Main shaft 3 is hollow shafts, in its hollow part, keeps pull bar 8.Pull bar 8 can slide in main shaft 3 along the vertical direction.Main shaft 3 has cutter retaining hole 3a from the outstanding bottom of the lower openings of carrying cylinder 11.Cutter retaining hole 3a is the circular hole of the bigger taper of the diameter of below, and can the handle of a knife 10a that cutter 10 is installed be installed.The bottom of pull bar 8 in protruding in cutter retaining hole 3a comprises tool-holder gripping member 81.Pull bar 8 receives the elastic force of being located at the helical spring 9 in the main shaft 3 and is positioned at lifting position at ordinary times.When pull bar 8 rises, tool-holder gripping member 81 closures, and catch upper end and the broaching tool handle 10a upwards of handle of a knife 10a.Handle of a knife 10a closely contacts with cutter retaining hole 3a, and main shaft 3 keeps cutter 10.Cutter 10 rotates with main shaft 3, and rises, descends with main tapping 1, and the workpiece on the workbench that moves at fore-and-aft direction, left and right directions is processed.Pull bar 8 receives the action of presses lever 6 and descends.When pull bar 8 descended, tool-holder gripping member 81 was opened, and decontroled the upper end of handle of a knife 10a.Through broaching tool tool 10 downwards, cutter 10 leaves main shaft 3 with handle of a knife 10a.
The bolster 6a that extends along left and right directions is supported on presses lever 6 in the main tapping 1.The rearward end of presses lever 6 is crooked to the top, and is outstanding to the outside of main tapping 1.As shown in Figure 3, the fore-end of presses lever 6 is two, is positioned at the both sides of main shaft 3.Pull bar 8 in the main shaft 3 comprises the pin 33 that runs through its top along left and right directions.Pin 33 passes the slotted hole 32 of being located at main shaft 3, protrudes in the lower position of presses lever 6 leading sections.Rearward end to presses lever 6 applies operating physical force forwards, thereby presses lever 6 is the center swing with bolster 6a.The leading section of presses lever 6 descends and runs into pin 33, is pressed towards the below so that sell 33.Pull bar 8 descends with pin 33.
Main tapping 1 comprises inflator 7, exhaust outlet 18.Like Fig. 5, shown in Figure 6, inflator 7 is cylinders, has flange 72 at the one of which side end.The end side of inflator 7 is stopped up.Inflator 7 has three puff prots 71 that run through its perisporium.Three puff prots 71 are equally arranged at interval and are arranged on same the straight line on the perisporium.Flange 72 has three through holes 73 that supply fixing screw to pass.As shown in Figure 2, inflator 7 fixes the sidewall outer surface in main tapping 1 through flange 72.Like Fig. 1, shown in Figure 4, inflator 7 is positioned at the rear lower of carrying cylinder 11 in main tapping 1.Three puff prots 71 of inflator 7 are towards the front upper place.The openend of inflator 7 is connected with air source (compressor etc.) through pipe union 74 (with reference to Fig. 2, Fig. 4).Air source supplies air in the inflator 7.Inflator 7 is from three puff prots, 71 ejection air.As among Fig. 1, Fig. 4 with shown in the arrow, flow to the top of main shaft 3 from the air of puff prot 71 ejection.Total aperture area of three puff prots 71 is substantially equal to the area of section of inflator 7.Air in the inflator 7 is successfully from 71 ejections of three puff prots.As shown in Figure 1, exhaust outlet 18 is provided with the mode that the rear side at shaft coupling 5 runs through main tapping 1 sidewall.Like Fig. 2, shown in Figure 3, exhaust outlet 18 is connected with blast pipe 19 in the outside of main tapping 1.Exhaust outlet 18 is assembled from the air of inflator 7 ejections, and it is discharged to outside the main tapping 1 via blast pipe 19.As stated, main shaft 3 is at a high speed rotation under the driving of Spindle Motor 4, and with main tapping 1 rise, decline and processing work.Adding man-hour, inflator 7 ejection air.The air that is sprayed is run into main shaft 3 and shaft coupling 5, so that its cooling, thereby the temperature that can suppress main shaft 3 and shaft coupling 5 rises.Its direction is changed on the antetheca top that air after cooling main shaft 3 and the shaft coupling 5 is run into main tapping 1, turns back in the main tapping 1.Air in the main tapping 1 is discharged to outside the main tapping 1 via after exhaust outlet 18, the blast pipe 19.Air after exhaust outlet 18 can be rapidly, discharge temperature rises efficiently.Therefore, the temperature in the main tapping 1 is not easy to rise.Main shaft 3 can long-time continuous rotation under the situation that temperature does not rise with shaft coupling 5.The temperature of bearing 2 can not rise, thereby can prevent the deterioration of lubricating grease, and can not reduce bearing 2 added pressure.Therefore, not rotation of main shaft 3 with rocking, lathe can keep machining accuracy well.
The part has been changed embodiment discussed above and the alter mode that obtains describes.
1) bearing 2 of supporting spindle 3 is not limited to the angular contact ball bearing of embodiment, also can be other bearings such as deep groove ball bearing, cylinder roller bearing, taper roll bearing.
2) as long as inflator 7 is positioned at the scope relative with main shaft 3, just can be disposed at the optional position in the main tapping 1.
3) air ejection portion is not limited to the inflator 7 of embodiment, can constitute the alter mode 1～3 that is described below.
As shown in Figure 8, the lathe of alter mode 1 comprises the air ejection member 20 that is installed on main tapping 1 antetheca.Air ejection member 20 has the access 20b that is communicated with a puff prot 20a or a plurality of puff prot 20a.The top of puff prot 20a and main shaft 3 is relative.Air ejection member 20 is from puff prot 20a ejection air, the top of cooling main shaft 3 and suppress temperature and rise.
As shown in Figure 9, the lathe of alter mode 2 comprises the air ejection member 21 that is installed on main tapping 1 antetheca top.Air ejection member 21 has a puff prot 21a or a plurality of puff prot 21a.The shaft coupling 5 of puff prot 21a and main shaft 3 upper ends is relative.Air ejection member 21 is from puff prot 21a ejection air, the top of cooling shaft coupling 5 and main shaft 3 and suppress its temperature and rise.
Shown in figure 10, the lathe of alter mode 3 comprises the air bleed pipe 22 that is installed on main tapping 1 antetheca upper end.The rear end of air bleed pipe 22 output shaft 41 with Spindle Motor 4 in main tapping 1 is relative.Air bleed pipe 22 is from the puff prot ejection air of rear end, and cooling output shaft 41 suppresses its temperature and rises with shaft coupling 5.

Claims (7)

1. a lathe will be connected with drive source at the main shaft that the main tapping inner bearing is supported, and utilizes this drive source driving main shaft rotation, it is characterized in that,
This lathe comprises air ejection portion in said main tapping, this air ejection portion is towards said main shaft ejection air.
2. lathe as claimed in claim 1 is characterized in that, the position of the connecting portion of said main shaft and said drive source is left by said air ejection portion being located axially at of said main shaft.
3. according to claim 1 or claim 2 lathe is characterized in that, said air ejection portion has the puff prot towards said main shaft, and is the cylindrical shell of installing with the mode that protrudes in the said main tapping.
4. lathe as claimed in claim 3 is characterized in that, said cylindrical shell with said main shaft intersect in protruding in said main tapping, said puff prot is located on the perisporium of said cylindrical shell.
5. lathe as claimed in claim 4 is characterized in that said puff prot is arranged to a plurality of, and arranges on same the straight line on the perisporium that is arranged on said cylindrical shell.
6. lathe as claimed in claim 5 is characterized in that, said main tapping is included near the exhaust outlet of the opening of connecting portion of said main shaft and said drive source.
7. lathe as claimed in claim 1; It is characterized in that; Said drive source is the motor that is installed on said main tapping; Said lathe comprises the shaft coupling that the output shaft in the said main tapping of extending to of said motor is connected with said main shaft, and said air ejection portion is disposed at the position relative with said shaft coupling, or is disposed at a side of leaning on said motor than said shaft coupling.
CN2012201153104U 2011-03-25 2012-03-23 Machine tool Expired - Lifetime CN202528008U (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011068434A JP5782773B2 (en) 2011-03-25 2011-03-25 Machine Tools
JP2011-068434 2011-03-25

Publications (1)

Publication Number Publication Date
CN202528008U true CN202528008U (en) 2012-11-14

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ID=47129216

Family Applications (1)

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CN2012201153104U Expired - Lifetime CN202528008U (en) 2011-03-25 2012-03-23 Machine tool

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JP (1) JP5782773B2 (en)
KR (1) KR101387824B1 (en)
CN (1) CN202528008U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109702536A (en) * 2019-02-12 2019-05-03 山东卡洛德数控设备有限公司 A kind of numerically-controlled machine tool power head limiting device
CN115255412A (en) * 2022-08-16 2022-11-01 高崎智能装备(丽水)有限公司 High-precision main shaft of machining center

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016083770A (en) * 2016-02-01 2016-05-19 住友化学株式会社 Cutting method and cutting device, manufacturing method for optical member

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5541254U (en) * 1978-09-11 1980-03-17
JPS60178535U (en) * 1984-05-02 1985-11-27 三菱電機株式会社 Electric discharge machining equipment
DE4220310C2 (en) * 1992-06-22 1995-09-21 San Rocco Donzelli Ind S P A Working spindle with air cooling
JPH07164208A (en) 1993-12-16 1995-06-27 Fanuc Ltd Cutting fluid invasion preventing device for bearing part of machine tool spindle
JPH07290344A (en) * 1994-04-21 1995-11-07 Howa Mach Ltd Cooling method and device for spindle head
JPH0929582A (en) * 1995-07-17 1997-02-04 Howa Mach Ltd Cooling device for spindle head
JP2002346860A (en) * 2001-05-25 2002-12-04 Mitsubishi Heavy Ind Ltd Device for suppressing thermal displacement and machine tool
JP2009214187A (en) * 2008-03-07 2009-09-24 Brother Ind Ltd Machine tool

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109702536A (en) * 2019-02-12 2019-05-03 山东卡洛德数控设备有限公司 A kind of numerically-controlled machine tool power head limiting device
CN115255412A (en) * 2022-08-16 2022-11-01 高崎智能装备(丽水)有限公司 High-precision main shaft of machining center

Also Published As

Publication number Publication date
JP2012200825A (en) 2012-10-22
JP5782773B2 (en) 2015-09-24
KR20120109312A (en) 2012-10-08
KR101387824B1 (en) 2014-04-22

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CX01 Expiry of patent term

Granted publication date: 20121114

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