CN2099635U - Resistance strain force-measuring tailstock for heavy-duty lathe - Google Patents
Resistance strain force-measuring tailstock for heavy-duty lathe Download PDFInfo
- Publication number
- CN2099635U CN2099635U CN 91210844 CN91210844U CN2099635U CN 2099635 U CN2099635 U CN 2099635U CN 91210844 CN91210844 CN 91210844 CN 91210844 U CN91210844 U CN 91210844U CN 2099635 U CN2099635 U CN 2099635U
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- CN
- China
- Prior art keywords
- tailstock
- heavy
- spoke
- flexible member
- bearing
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- 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.)
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- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The utility model relates to a force-measuring tailstock for a heavy-duty lathe. The tailstock is provided with a bearing sleeve, a bearing, a tail shaft, an elastic element and a back press cover, wherein, the elastic element has a hollow spoke type structure; the spoke is attached with strain gages which form an electric bridge; the intensity of force is showed in digital display. The utility model has the advantages of simple and compact structure, high loading capacity, high sensitivity, reliable work, being applicable to force-measuring tailstocks for heavy-duty lathes.
Description
The utility model belongs to a kind of tailstock tool, particularly a kind of resistance-strain type of dynamometer tailstock that is used on the heavy-duty engine lathe.
Heavy-duty engine lathe is when processing work, need workpiece is clamped between chuck and tailstock top, because workpiece weight is bigger, reliable for guaranteeing clamping, on the workpiece axial direction, need to apply pretightning force, need to be provided with a force measuring machine for this reason,, avoid occurring accident because of clamping is not firm so that measure the size of tailstock to the workpiece pretightning force.Adopt the hydraulic pressure force measuring machine at present on the heavy-duty engine lathe mostly, its weak point is that Hydraulic Elements are aging easily, is prone to phenomenons such as leakage of oil, causes dynamometry inaccurate, even occurs excess load power sometimes, makes mechanical part impaired, influences the service life of tailstock.
The purpose of the present utility model is to provide that a kind of bearing capacity is big, highly sensitive, element is difficult for heavy-duty engine lathe dynamometry tailstock aging, compact conformation.
The utility model is realized with following structure.It is made of tailstock body, rear pressing cover, top, bearing holder (housing, cover), bearing, axle sleeve, pot wheel, pot bar and leading screw.Be provided with bearing holder (housing, cover) near in the tailstock body of rear pressing cover one side, the tailstock body rear portion connects a rear pressing cover with bolt, the rear portion of tailstock is provided with the axle sleeve that is threaded on a leading screw, the leading screw, adorning bearing on this axle sleeve, it is characterized in that between bearing and rear pressing cover, being provided with flexible member, this flexible member is hollow spoke type structure, posts foil gauge on the flexible member.Flexible member comprises wheel hub, wheel rim and symmetrically arranged even number root spoke, and two sides of each spoke are posted foil gauge respectively, and per two foil gauges are composed in series a brachium pontis, form electric bridge by brachium pontis.After top work is stressed, by axle and axle sleeve operational forces is passed on the hollow spoke type flexible member, make the distortion of its spoke, at this moment measure signal, and send signal processing apparatus to and draw the size of operational forces by foil gauge, realize dynamometry.
Accompanying drawing 1 is the mechanical construction drawing of heavy-duty engine lathe resistance-strain dynamometry tailstock.
Accompanying drawing 2 is the cutaway view and the side view of flexible member
Accompanying drawing 3 is foil gauge group bridge circuit figure
Below in conjunction with the embodiment accompanying drawing the utility model is further described.
Find out with reference to accompanying drawing 1: whole tailstock structure is similar to traditional structure, and its difference only is that the tailstock rear structure improves to some extent.And the structure of whole tailstock is to be provided with a front shaft sleeve (3) in tailstock body, is fixedly mounting tail spindle (4) by bearing (5) and preceding gland (2) etc. in the front shaft sleeve, plug-in mounting one top (1) in the taper hole of this tail spindle.The rear portion of tailstock still is provided with a leading screw (13), a pair of worm and gear (16) transmission mechanism, bearing holder (housing, cover) (7), bearing (9) (11) and rear pressing cover (12) etc., the improvement of its tailstock rear structure is: rear axle housing (8) is housed in tailstock body (6), and this rear axle housing (8) becomes to be threaded with leading screw (13).Rear axle housing (8) is provided with a journal bearing (9) and packing ring (16) and thrust bearing (11), outer shroud at journal bearing (9) also is provided with a bearing holder (housing, cover) (7), between rear pressing cover (12) and thrust bearing (11), be provided with flexible member (15), leading screw (13) is threaded mutually with rear axle housing (8), and pass flexible member (15) and rear pressing cover (12), post foil gauge (14) on this flexible member.
Structure below by 2 pairs of flexible members of accompanying drawing (15) is described further.Flexible member (15) is hollow spoke type structure, and four spokes (22) that evenly distribute between its wheel hub (23) and wheel rim (21) paste a slice tensile strain sheet T respectively in a side of each spoke
1, T
2, T
3And T
4, paste a slice compressive strain sheet C respectively in the another side
1, C
2, C
3And C
4, each foil gauge and flexible member axis direction angle at 45.
Find out per two tensile strain T of every pair of spoke (22) by Fig. 3
1And T
3, T
2And T
4Series connection becomes two brachium pontis, per two compressive strain sheet C respectively
1And C
3, C
2And C
4Be connected into two brachium pontis respectively, form four brachium pontis altogether, form a full-bridge.
Survey top (1) for tailstock during work, axial compressive force suffered when clamping workpiece is delivered on the leading screw (13) by top and tail spindle (4) and front shaft sleeve (3), leading screw (13) is used in masterpiece on the rear axle housing (8), rear axle housing (8) is delivered to interior ring and packing ring (16) and the thrust bearing (11) of power by journal bearing (9) on the wheel hub (23) of flexible member (15), wheel rim (21) is subjected to the reaction force of rear pressing cover (12) simultaneously, the spoke (22) of flexible member this moment (15) produces distortion, pastes tensile strain sheet T thereon
1, T
2, T
3And T
4, compressive strain sheet C
1, C
2, C
3And C
4Strain signal is exported by electric bridge, after amplifying circuit is handled, shown by digital display meter (10).
Advantage of the present utility model: owing to adopted the flexible member of hollow spoke type structure, element is difficult for aging, and the oil leakage phenomenon of hydraulic pressure force measuring machine can not appear in long service life, and bearing capacity is big, is difficult for overload. Post foil gauge at flexible member, it is highly sensitive, measurement is accurate. This device simple and compact for structure is specially adapted to the tailstock device for measuring force of heavy-duty engine lathe.
Claims (4)
1, a kind of heavy-duty engine lathe dynamometry tailstock, it is made of tailstock body, rear pressing cover, top, bearing holder (housing, cover), axle sleeve, worm and gear and screw mandrel, be provided with bearing holder (housing, cover) near in the tailstock body of rear pressing cover one side, the tailstock body rear portion connects a rear pressing cover with bolt, the rear portion of tailstock is provided with the axle sleeve that is threaded on a leading screw, the leading screw, is adorning bearing on this axle sleeve, it is characterized in that being provided with flexible member between bearing and rear pressing cover, this flexible member is hollow spoke type structure, posts foil gauge on the flexible member;
2, heavy-duty engine lathe dynamometry tailstock as claimed in claim 1 is characterized in that between the wheel hub and wheel rim of flexible member.Be provided with even number root spoke, the tensile strain sheet is posted in a side of every spoke, and the compressive strain sheet is posted in another side;
3, heavy-duty engine lathe dynamometry tailstock as claimed in claim 2 is characterized in that two tensile strain sheets on every pair of spoke are connected into a brachium pontis, and two compressive strain sheets on the every pair of spoke are connected into a brachium pontis, form electric bridge by brachium pontis.
4, heavy-duty engine lathe dynamometry tailstock as claimed in claim 2 is characterized in that the axis direction angle at 45 of the foil gauge that pasted on each spoke and flexible member is provided with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91210844 CN2099635U (en) | 1991-07-05 | 1991-07-05 | Resistance strain force-measuring tailstock for heavy-duty lathe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91210844 CN2099635U (en) | 1991-07-05 | 1991-07-05 | Resistance strain force-measuring tailstock for heavy-duty lathe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2099635U true CN2099635U (en) | 1992-03-25 |
Family
ID=4919604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91210844 Withdrawn CN2099635U (en) | 1991-07-05 | 1991-07-05 | Resistance strain force-measuring tailstock for heavy-duty lathe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2099635U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101985182A (en) * | 2010-04-17 | 2011-03-16 | 安徽池州伟舜机电有限公司 | Upper center driving device capable of jacking reliably |
| CN102581698A (en) * | 2012-03-06 | 2012-07-18 | 贵州大学 | Force measuring device for tip of machine tool tailstock |
| CN103481197A (en) * | 2013-09-09 | 2014-01-01 | 清华大学 | Grinder hydraulic tailstock center axial force measuring device |
| CN103817349A (en) * | 2014-03-02 | 2014-05-28 | 党金行 | Clamp shaft lathe |
| CN106002481A (en) * | 2016-05-10 | 2016-10-12 | 天津大学 | Testing system and method for evaluating lead screw prestretching force and dynamic performance of feeding system |
| CN106041641A (en) * | 2016-05-10 | 2016-10-26 | 天津大学 | Test system for estimating pre-drawing force of screw and dynamic performance of feeding system and calibration device |
-
1991
- 1991-07-05 CN CN 91210844 patent/CN2099635U/en not_active Withdrawn
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101985182A (en) * | 2010-04-17 | 2011-03-16 | 安徽池州伟舜机电有限公司 | Upper center driving device capable of jacking reliably |
| CN101985182B (en) * | 2010-04-17 | 2013-05-01 | 安徽池州伟舜机电有限公司 | Upper center driving device capable of jacking reliably |
| CN102581698A (en) * | 2012-03-06 | 2012-07-18 | 贵州大学 | Force measuring device for tip of machine tool tailstock |
| CN103481197A (en) * | 2013-09-09 | 2014-01-01 | 清华大学 | Grinder hydraulic tailstock center axial force measuring device |
| CN103481197B (en) * | 2013-09-09 | 2016-05-18 | 清华大学 | The axial device for measuring force of a kind of grinding machine hydraulic pressure tailstock center |
| CN103817349A (en) * | 2014-03-02 | 2014-05-28 | 党金行 | Clamp shaft lathe |
| CN106002481A (en) * | 2016-05-10 | 2016-10-12 | 天津大学 | Testing system and method for evaluating lead screw prestretching force and dynamic performance of feeding system |
| CN106041641A (en) * | 2016-05-10 | 2016-10-26 | 天津大学 | Test system for estimating pre-drawing force of screw and dynamic performance of feeding system and calibration device |
| CN106002481B (en) * | 2016-05-10 | 2018-05-22 | 天津大学 | Assess feed system leading screw prestretching force dynamic performance testing system and test method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |