CN1103343A - Mainshaft installed torque remote-measuring cutter handle - Google Patents
Mainshaft installed torque remote-measuring cutter handle Download PDFInfo
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- CN1103343A CN1103343A CN 93114993 CN93114993A CN1103343A CN 1103343 A CN1103343 A CN 1103343A CN 93114993 CN93114993 CN 93114993 CN 93114993 A CN93114993 A CN 93114993A CN 1103343 A CN1103343 A CN 1103343A
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- mainshaft
- taper shank
- flexible member
- thin
- cutter handle
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Abstract
A Morse taper sleeve which is integrated with thin-wall elastic cylinder and whose tail is connected to taper shank is rigidly borne in inner hole of taper shank by needle bearing. The part of Morse taper sleeve, that is extended from taper shank and plastic protective ring constitute a ring cavity in which emitter and battery are arranged. The cutter shank is suitable for drill bit, boring cutter and milling cutter and can monitor the abrasion and damage condition of rotary cutter through emitting and receiving systems and computer analyzing system.
Description
The invention belongs to wearing and tearing, the damaged on-Line Monitor Device of machining center with rotating tool.
From occurring for the first time the FMS(flexible manufacturing system in 1967 in the world) since, the flexible manufacturing technology has experienced the development of two more than ten years.In service in flexible manufacturing system, produce instability and cause the factor of fault a lot, as machine failure, computer control system fault, tool failure etc., because of cutter quality of stability and reliability are the poorest in each factor, so tool failure is main factor, in case the unexpected breakage of cutter will cause the different even very serious loss of degree, damage as lathe, valuable workpiece is scrapped and the FMS general technical that causes therefrom and the decline of economic benefit.Therefore, must monitor in real time, particularly tool failure be monitored FMS.When breakage takes place in cutter in the working angles, must show in a variety of forms by various phenomenons, as many phenomenon generation significant changes relevant such as cutting force (moment of torsion), temperature, vibration, cutting power, sound, rotating speed, surface roughness, precision with working angles.The variation of cutting force is the most responsive during tool failure, is the most frequently used, the most reliable method of monitoring tool failure so detect cutting force.Used the conventional desktop dynamometer in the past, and now for the bigger cobalt of application percentage, boring, mill machining center, because of cutter revolution, workpiece size and the changeable characteristics of shape, desk-top dynamometer can not satisfy actual needs, the power sensor can only be placed on the main shaft.At present, mainly contain two kinds of detection methods and be used for rotary tool, a kind of is to detect radial load with force-measuring bearing; A kind of is that the power Sensor Design is being turned round on the handle of a knife.Existing many to the research of preceding a kind of method, this monitoring device has been installed on some Digit Control Machine Tools and machining center.But this device can only be monitored the overload or the cutter of heavy cut process and be fractureed, and tool setting has tipping and the wearing and tearing reaction is insensitive, and disturbing factor is many, and inconvenient maintenance must be installed this device when lathe is made.For second kind with the power Sensor Design in the method for revolution on the handle of a knife, research seldom, even having also nearly all is the monitoring that fractures of the drill bit that only is used for aperture and micropore drilling, they are that the driving gas pressure of the detection revolution handle of a knife inner air primary spindle of Japanology (is seen paper " tool abnormality monitors that the シ ス テ system effect imports " mechanical technique on an island great three, 1992; 40(6): 49-54) or primary spindle rotating speed (seeing the oily pneumatics technology of paper " cutting state monitors function つ I ultrahigh speed main shaft ァ Star チ メ Application ト exploitation " of good fortune Tian Shengtang, 1988(1) 66-72), by the fiber optic transmission signal; The cutting force that this device can bear is very little, only is used for aperture and micropore drilling, and the poor ability of bearing radial load can't be used to mill, the big machining of radial load such as boring, can't put into greatly because of radial dimension on the holder cutterhead at boring-mill work center; Because of the relative cutting force with the primary spindle tach signal of air pressure/torque signal hysteresis is bigger, so accuracy of detection and reliability are relatively poor.The another kind of Japanology is the strain that detects flexible member on the revolution handle of a knife, (see too clear and 60 annual smart machine association conference in the autumn collections of thesis of youth's " path De リ Le with instrument ホ Le ダ-shape FM formula ト Le Network ス ラ ス ト temperature セ Application サ-exploitation " of ocean, village shrouded in mist by the radio telemetry force signal, 1985,787-788), it is oversize that this device handle of a knife front end gentry goes out the part cantilever, what adopt is the elasticity aiding support, radial rigidity is very poor, the radial load that can bear is less, in can not using, the major diameter drill bit, more can not use the big cutters of radial load such as milling cutter, boring cutter; And the elasticity aiding support will share a part of cutting moment of torque and axial force, makes the sensitivity of detection signal reduce linearity variation; Moreover, handle of a knife front end extension radial dimension is big, and handle of a knife can't be put into boring, mill the gap of machining center holder cutterhead for the manipulator automated exchanged cutter; What adopt because of this device is muscle formula flexible member, and the radial dimension that takies is big, and handle of a knife inside is difficult to pack into; Muscle formula flexible member is two bodies partly with the folder cutter, and being threaded between them produces interference to distortion, causes accuracy of detection to reduce; Transmitter is contained in taper shank inside, and it is more by metal absorption on every side to transmit, and causes transmitting range short, and accuracy of detection and sensitivity reduce.In a word, up to the present, also there is not a kind of handle of a knife that can be applicable to boring, mill the cutting moment of torque remote measurement of rotating tools such as the various drill bits of machining center, milling cutter, boring cutter.
Purpose of the present invention is exactly in order to overcome the deficiencies in the prior art, does redesign from structure, invents a kind of mainshaft installed torque remote-measuring cutter handle that is suitable for boring, mills machining center, to solve the tool failure monitoring difficult problem at boring-mill work center.
A kind of mainshaft installed torque remote-measuring cutter handle of forming by taper shank, mohs bush, flexible member, emission system, it is characterized in that flexible member adopts thin-walled cartridge type flexible member, this element and mohs bush are one, in the taper shank endoporus, emission system is contained in (comprising transmitter and battery pack) in the periphery and cannelure that protective cover surrounds of front end of Morse taper shank mohs bush by the needle bearing non-yielding prop.
Describe structure of the present invention in detail below in conjunction with accompanying drawing:
Fig. 1 is the mainshaft installed torque remote-measuring cutter handle diagrammatic sketch;
Fig. 2 is the structure cutaway view in the cannelure;
Fig. 3 pastes foil gauge position expanded view on the thin-walled cartridge type flexible member;
Fig. 4 is the emission system block diagram.
Fig. 1 is the mainshaft installed torque remote-measuring cutter handle diagrammatic sketch, at tapering 7: 24 taper shank (1) inside, the mohs bush (5) of packing into and having a certain model mohs tapered bore, model is decided according to the handle of a knife size of using cutter, by needle bearing (4) and needle bearing (6) with mohs bush (5) non-yielding prop in taper shank (1) endoporus, needle bearing (4) is installed near thin-walled cartridge type flexible member (3); Needle bearing (6) is installed near taper shank (1) end face; Between the afterbody of mohs bush (5) and the taper shank (1) is interference fits, and is connected mutually with taper shank (1) with four cone pins (2); Mohs bush between mohs bush (5) afterbody standing part and the needle bearing (4) is a thin-walled cartridge type flexible member (3), that is to say that thin-walled cartridge type flexible member (3) and mohs bush (5) are one; The wall thickness of thin wall cylinder is decided according to the mohs tapered bore size, and to general tool dimension and type, the wall thickness of its thin wall cylinder is about 0
-The 5-2mm scope is selected; The cutter (9) of in the mohs tapered bore of mohs bush (5), packing into and having identical therewith mohs bush handle of a knife, as needs tension cutter (9) (boring, milling cutter are to need the tension cutter), hexagonal blind rivet (13) is at place, mohs bush (5) inner step hole tension cutter (9) in then using, and shoulder hole is positioned at the bottom of thin-walled cartridge type flexible member; Stretch out the periphery of taper shank part and protective cover (10) cannelure that to surround a centre be cavity at the mohs bush front end; Device battery group (8) (12) and transmitter (14) in it, seal with sealing ring (11) between the front end face of protective cover (10) and mohs bush (5), cover with annular plastics lid (7) between protective cover (10) bottom and the needle bearing (6), Fig. 2 is the structure chart in the cannelure, with battery pack 1(8), battery pack 2(12) and transmitter (14) (branch two parts) be distributed in symmetrically wherein, two battery pack are respectively No. 7 rechargeable batteries of 4 joints (or 5 joints), the circuit that the electronic component of transmitter constitutes casts in the cannelure with silicon rubber, and protective cover (10) is fixed on the front end face of taper shank (1) with six screws (15).Fig. 3 is the position expansion schematic diagram that thin wall cylinder is pasted foil gauge.4 foil gauges are pasted in signal on figure, and every 120～500 Ω of resistance value (also can paste 8 foil gauges) constitutes survey moment of torsion strain bridge shown in Figure 4.Fig. 4 is the emission system block diagram, battery pack 1(8) after voltage stabilizing, press battery pack 2(12 as the electric bridge bridge) after voltage stabilizing, supply with transmitter (14).Line between electric bridge and battery pack and the transmitter is walked in the groove that mohs bush (5) outer surface is opened.
Torque remote-measuring cutter handle of the present invention is contained in when working on the machining center main shaft, cutting force generally can be decomposed into X-Y two direction radial loads, axial force and moment of torsion, because the mohs bush (5) of clamping cutter needle bearing (4), (6) non-yielding prop, so thin-walled cartridge type flexible member (3) bears moment of torsion and axial force, torque signal just can reflect the synthetic operation performance of cutter, because of needle bearing (4), (6) rolling friction is very little, almost can ignore, so can think that the cutting moment of torque of cutter all acts on the thin-walled cartridge type flexible member (3); the torsional deflection that thin-walled cartridge type flexible member (3) produces is converted into the voltage output of strain bridge; this faint signal of telecommunication is input in the transmitter; through proportional amplifier; electric voltage/frequency converter and carrier oscillator; be converted into radio signal; again by transmitting antenna to external emission; outside receiver receives and this FM signal of demodulation; the voltage/current that finally obtains the cutting moment of torque simulates signal; this signal collects through the A/D conversion and carries out real-time analysis in the computer and handle; judge the duty of cutter, thereby realize boring; boring; mill the on-line monitoring of the tool wear of machining center.
The present invention has following advantage compared with prior art:
1. handle of a knife front end extension (being protective cover (10) part) cantilever is shorter.
2. adopt two needle bearing rigidity aiding support mohs bush, radial rigidity is very high, can bear very big radial cutting force, detects so can be used for the moment of torsion of rotating tools such as drill bit, milling cutter, boring cutter.
3. very little because of the needle bearing rolling friction of aiding support, so thin-walled cartridge type flexible member bears whole cutting moments of torque, the sensitivity of detection signal and the linearity are all very high.
But 4. have the mohs bush clamping different size of different mohs tapered bores boring, mill, rotating tool or transition knife bar such as brill.
5. handle of a knife front end extension radial dimension is less, handle of a knife can be put into the gap of holder cutterhead, for the manipulator automated exchanged cutter.
6. adopt thin-walled cartridge type flexible member, the radial dimension that takies is little, and the bottom of the taper shank of can packing into makes radial load little to the interference of moment of torsion, and heat in metal cutting is disturbed also little to flexible member and foil gauge distortion.
7. thin-walled cartridge type flexible member is made of one with the mohs bush of folder cutter, has eliminated the distortion of coupling part and has disturbed.
8. transmitter is contained in the taper shank front end and adopts the plastics protective cover, makes the fully outwards emission of radio signal of transmitter, and transmitting range will obviously increase.
Description of drawings:
Fig. 1 is the mainshaft installed torque remote-measuring cutter handle diagrammatic sketch:
1 taper shank, 2 tapered pins
3 thin-walled cartridge type flexible members, 4 needle bearings
5 mohs bush, 6 needle bearings
7 ring covers, 8 battery pack 1
9 cutters, 10 protective covers
11 sealing rings, 12 battery pack 2
Hexagonal blind rivet in 13
Fig. 2 is a cannelure inner structure cutaway view:
1 taper shank, 5 mohs bush
8 battery pack, 19 cutters
10 protective covers, 12 battery pack 2
14 transmitters, 15 screws
Fig. 3 pastes foil gauge position expanded view on the thin-walled cartridge type flexible member;
Fig. 4 is the emission system block diagram.
Conceive a handle of a knife of manufacturing by the present invention, its handle of a knife front end extension is less than 50mm, its radial dimension is about 70mm, the mohs bush (5) of packing in the taper shank (1) and having No. 4 mohs tapered bores, needle bearing (4) is 644806, needle bearing (6) is 45544907; the thin wall cylinder external diameter is about 30mm, and wall thickness is about 1.5mm, the high about 5mm of tube; post 4 foil gauges on its face; two groups of No. 7 rechargeable batteries of totally 8 joints that are symmetrically distributed in cannelure, result of the test shows, its sensitivity; precision; the linearity all reaches high level; telemeter distance reaches 5.10 meters, as adds that receiving cable can reach 50 meters.The present invention will play significant role to the Automation in Mechanical Working of development China, have very big economic benefit and social benefit.
Claims (8)
1, a kind of mainshaft installed torque remote-measuring cutter handle of forming by taper shank, mohs bush, flexible member, emission system etc., it is characterized in that flexible member is a thin-walled cartridge type flexible member (3), this thin-walled cartridge type flexible member (3) is an one with mohs bush (5), and promptly thin-walled cartridge type flexible member (3) is the part of mohs bush; Mohs bush (5) is bearing in taper shank (1) endoporus by needle bearing (4), (6); Emission system (comprising transmitter and battery pack) is installed in the periphery of Morse taper shank front end and centre that protective cover surrounds is in the cannelure of cavity.
2, according to the said mainshaft installed torque remote-measuring cutter handle of claim 1, it is characterized in that the wall thickness of thin-walled cartridge type flexible member (3) is decided according to the mohs tapered bore size, to general tool dimension and type, the wall thickness of its thin wall cylinder is selected about the 0.5-2mm scope.
3, according to the said mainshaft installed torque remote-measuring cutter handle of claim 1, it is characterized in that the needle bearing (4) of mohs bush (5) non-yielding prop in taper shank (1) endoporus installed near thin-walled cartridge type flexible member (3), needle bearing (6) is installed near taper shank (1) end face.
4, according to the said mainshaft installed torque remote-measuring cutter handle of claim 1, it is characterized in that there is a shoulder hole mohs bush inside, this hole is in thin-walled cartridge type flexible member (3) bottom, passes the shank (limit the use of boring, milling cutter) of an interior hexagonal blind rivet (3) with tension cutter (9) in the shoulder hole.
5, according to the said mainshaft installed torque remote-measuring cutter handle of claim 1, it is characterized in that stretching out that part of periphery of taper shank (1) end face and plastics protective cover (10) at mohs bush (5) is the cannelure of cavity in the middle of surrounding, be symmetrically distributed within it two groups (10 joint or 8 joint) No. 7 rechargeable battery set (8), (12) and symmetrical distribution transmitter (14) (branch two parts), the circuit that the electronic component of transmitter (14) constitutes casts in the cannelure with silicon rubber.
6,, it is characterized in that covering with annular plastics lid (7) between protective cover (10) bottom and the needle bearing (6) according to the said mainshaft installed torque remote-measuring cutter handle of claim 1; Seal with sealing ring (11) between the front end face of protective cover (10) and mohs bush (5).
7,, it is characterized in that protective cover (10) being fixed on the end face of taper shank (1) with screw according to the said mainshaft installed torque remote-measuring cutter handle of claim 1.
8,, it is characterized in that being interference fits between mohs bush (5) afterbody and the taper shank (1), and be fixed on the taper shank (1) with four cone pins (2) according to the said mainshaft installed torque remote-measuring cutter handle of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93114993 CN1103343A (en) | 1993-11-27 | 1993-11-27 | Mainshaft installed torque remote-measuring cutter handle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93114993 CN1103343A (en) | 1993-11-27 | 1993-11-27 | Mainshaft installed torque remote-measuring cutter handle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1103343A true CN1103343A (en) | 1995-06-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93114993 Pending CN1103343A (en) | 1993-11-27 | 1993-11-27 | Mainshaft installed torque remote-measuring cutter handle |
Country Status (1)
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| CN (1) | CN1103343A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102039427A (en) * | 2009-10-19 | 2011-05-04 | 西安贝吉姆机床股份有限公司 | Movable centre mechanism of gear grinding machine |
| CN103042266A (en) * | 2012-12-12 | 2013-04-17 | 山西汾西重工有限责任公司 | Intersecting line outline chamfering tool for cylinder pre-drilled opening |
| CN103737430A (en) * | 2013-12-11 | 2014-04-23 | 西安交通大学 | Strain type rotary two-component milling force sensor |
| CN105965046A (en) * | 2016-04-04 | 2016-09-28 | 上海大学 | Combined type cutting force measuring knife handle |
| CN106112696A (en) * | 2016-07-27 | 2016-11-16 | 同济大学 | A kind of Milling Force, the monitoring method of moment of torsion, system and handle of a knife sensor |
| CN106956164A (en) * | 2017-04-19 | 2017-07-18 | 德阳鑫晶科技有限公司 | The system for preventing deep hole from drilling through deviation and cooling down automatically |
| CN107234788A (en) * | 2017-07-11 | 2017-10-10 | 宁波创基机械有限公司 | A kind of sensor device of embedded testing locking force of injection machine |
| CN110091215A (en) * | 2019-05-08 | 2019-08-06 | 北京理工大学 | A kind of real-time monitoring Milling Force, the wireless transmission intelligence knife handle detection system of vibration |
| CN110605613A (en) * | 2018-06-15 | 2019-12-24 | 弗朗茨凯斯勒股份有限公司 | Machine tool unit with axial runout error monitoring and method for testing |
-
1993
- 1993-11-27 CN CN 93114993 patent/CN1103343A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102039427A (en) * | 2009-10-19 | 2011-05-04 | 西安贝吉姆机床股份有限公司 | Movable centre mechanism of gear grinding machine |
| CN103042266A (en) * | 2012-12-12 | 2013-04-17 | 山西汾西重工有限责任公司 | Intersecting line outline chamfering tool for cylinder pre-drilled opening |
| CN103737430A (en) * | 2013-12-11 | 2014-04-23 | 西安交通大学 | Strain type rotary two-component milling force sensor |
| CN103737430B (en) * | 2013-12-11 | 2016-04-13 | 西安交通大学 | A kind of strain-type rotates two component Milling Force sensors |
| CN105965046A (en) * | 2016-04-04 | 2016-09-28 | 上海大学 | Combined type cutting force measuring knife handle |
| CN106112696A (en) * | 2016-07-27 | 2016-11-16 | 同济大学 | A kind of Milling Force, the monitoring method of moment of torsion, system and handle of a knife sensor |
| CN106956164A (en) * | 2017-04-19 | 2017-07-18 | 德阳鑫晶科技有限公司 | The system for preventing deep hole from drilling through deviation and cooling down automatically |
| CN107234788A (en) * | 2017-07-11 | 2017-10-10 | 宁波创基机械有限公司 | A kind of sensor device of embedded testing locking force of injection machine |
| CN110605613A (en) * | 2018-06-15 | 2019-12-24 | 弗朗茨凯斯勒股份有限公司 | Machine tool unit with axial runout error monitoring and method for testing |
| CN110605613B (en) * | 2018-06-15 | 2021-10-26 | 弗朗茨凯斯勒股份有限公司 | Machine tool unit with axial runout error monitoring and method for testing |
| CN110091215A (en) * | 2019-05-08 | 2019-08-06 | 北京理工大学 | A kind of real-time monitoring Milling Force, the wireless transmission intelligence knife handle detection system of vibration |
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| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |