CN205497218U - Intelligence is ground and is thrown anchor clamps based on it is measurable to do all can on line in real time - Google Patents

Abstract

The utility model relates to an intelligence is ground and is thrown anchor clamps based on it is measurable to do all can on line in real time belongs to the mechanical manufacturing technology field. The work piece holder passes through optical axis fastening screw fixed connection with sharp optical axis, this straight line optical axis bottom in the linear bearing guide rail with force cell sensor thread connection, force cell sensor is bottom and keysets thread connection in the linear bearing guide rail, linear bearing passes through linear bearing mounting hole screw fastening with the keysets, the work piece holder holds with limit torsion bar and holds mounting hole threaded connection through limit torsion bar, the limit torsion bar hold and limit the limit torsion bar who turns round on the support to hold guided way clearance fit, the limit is turned round the support and is turned round support mounting hole no. 1 with the keysets through respective limit, two threaded connection in the support mounting hole are turned round to the limit. The advantage lies in: can stablize holding workpiece, force transducer measures the gained data and is truly adding the skill, takes into account the anchor clamps function, stablizes holding workpiece, novel structure, low in cost, processing such as being applicable to the accurate super precision grinding of reaching of intelligence, polishing and milling.

Description

Based on real-time online power measurable intelligence grinding and polishing fixture

Technical field

This utility model belongs to machinery manufacturing technology field.

Background technology

For two dimensional ultrasonic vibration polishing and other relevant machining, the most accurately measuring operating force is a difficulty Topic, and real-time online controls an important problem especially.In polishing processing, the design requirement to fixture, fixture Rigidity is big, accurate positioning, and power is measured and required to need to decontrol the translation freedoms measuring direction.Conventional force is measured During design, experiment porch reduces contact as far as possible.And real-time online measuring operating force, it is desirable to other directions of measurement apparatus have Bigger rigidity, to avoid friction in measurement direction simultaneously as far as possible.Existing power measures many concern sensor measurement principle sides The innovation in face, such as piezoelectric type, strain-type, or is devoted to measure the diversification of dimension, pursues multi-direction multi-angle Power measure, be that true operating force is paid close attention to the fewest for institute's dynamometry actually, often institute's dynamometry can be fixing just by fixture Degree requires that produced friction, moment of torsion etc. balance out greatly；The design of existing clamp for machining is except considering that clamping is steady Qualitative (increase rigidity) outward, is devoted to concrete application places more and can press from both sides the number of workpiece, various shapes, it is impossible to hold concurrently The function that Gu Li measures；Existing operating force is measured and is the most mostly utilized the power transmission of grinding and polishing tool side to be processed power survey Amount, and in actual processing, machining tool itself has deformation, and has abrasion, also in machine tool accuracy, power transmittance process Fretting wear, moment of torsion abrasion, pass to there is the biggest error between the power of force transducer and true operating force.

Summary of the invention

This utility model provides a kind of based on real-time online power measurable intelligence grinding and polishing fixture, does not has with the fixture solving to exist Measure function effectively, it is impossible to the problem accurately transmitting operating force.

This utility model adopts the technical scheme that: work piece holder and straight optical axis are fixing even by optical axis trip bolt Connect, bottom this straight optical axis in Linear bearing guide rail with force cell thread connection, force cell is at linear axis Holding guide rail inner bottom part and keyset thread connection, linear bearing passes through linear bearing installing hole screw threads for fastening with keyset, Work piece holder is threadeded by limit torsion bearing mounting hole with limit torsion bearing, and the limit that limit is turned round on bearing and limit torsion support turns round axle Holding guided way matched in clearance, limit turns round support and keyset passes through respective limit and turns round rack mounting apertures one, limit torsion support installation Hole two is threaded；

The structure of described work piece holder is: include feed tank, and workpiece slot for coordinating location, passing through with workpiece gap Workpiece limit torsion screw in compression workpiece limit torsion key, at taper key groove, keyset has force transducer metallic channel.

The utility model has the advantage of: can stable holding workpiece, owing to fixture is sufficiently large in the rigidity of all directions, It is made not twist in the course of processing and mobile, the polishing fluid in simultaneously providing polishing fluid circulating slot, supply to process, And will not spill；Couple a set of force measuring device in clamp base simultaneously, accurately measure the pressure of processing, for gathering number According to.Whole system novel structure including force transducer, dependable performance, cheap, practical；Can Real-time online display operating force, for Real-time Feedback to Force control system；Accurately transmit operating force, increase and measure direction Rigidity in addition, avoids measuring the friction in direction from multi-angle again so that force sensor measuring the data obtained is for truly to add Skill, takes into account fixture function simultaneously, stable holding workpiece, and novel structure is cheap, it is adaptable to intelligent precise and Ultraprecision grinding, polishing and milling etc. are processed；Make a concrete analysis of as follows:

Excircle and the bottom of workpiece are fixed by work piece holder, respectively very big to rigidity, just energy stable holding workpiece, and not Produce extra dof, be provided with feed tank to ensure that polishing fluid will not spill；

Linear bearing coordinates with straight optical axis, has friction little and more stable, does not changes, energy with bearing speed Obtain steady linear motion highly sensitive, that precision is high, and operating force causes straight optical axis in measurement side with working conditions change Complicated to change in displacement, movement velocity is the highest sometimes, and it is high that metal linear bearing selected by this utility model is suitable for low load Speed motion, and with low cost, the perfect linear travelling performance giving work piece holder vertical direction excellence, thus can Ensureing the susceptiveness of force cell institute dynamometry, operating force suffered by workpiece can be by the straight optical axis being connected with work piece holder Displacement pass to force cell；

Limit turns round support and strictly limits while work piece holder reverses, and turns round bearing fit with limit and ensure that work piece holder is excellent The most mobile linear, it is screw bolt-type roller bearing that limit turns round bearing, can bear high radial power, carries if there is sloping edge Lotus is relatively low, and the abrasion of the track matched is less and the working life of advancing the track；The characteristic of these excellences makes workpiece clamp During tool stress, turning round bearing with its limit being connected can almost translate by friction free in limit turns round bearing guided way.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model；

Fig. 2 is partial sectional view of the present utility model；

Fig. 3 is the structure sectional view of this utility model work piece holder；

Fig. 4 is that the workpiece limit of this utility model work piece holder turns round key scheme of installation；

Fig. 5 is that the workpiece limit of this utility model work piece holder turns round bond structure schematic diagram；

Fig. 6 is that this utility model limit turns round supporting structure schematic diagram；

Fig. 7 is this utility model adapter plate structure schematic diagram；

Fig. 8 is this utility model force transducer structural representation；

Fig. 9 is the overall construction drawing of application example；

Wherein: 1, work piece holder, 2, linear bearing, 3, limit turn round support, 4, keyset, 5, limit turn round bearing, 6, Force cell, 7, straight optical axis, 8, optical axis trip bolt, 9, machine tool main body, 10, lathe z-axis, 11, Lathe x-axis, 12, lathe y-axis, 13, grinding and polishing instrument, 14, grinding and polishing tool heads, 15, workpiece, 101, workpiece Limit turns round screw, 102, taper key groove, 103, workpiece slot, 104, feed tank, 105, limit turn round bearing mounting hole, 106, Workpiece limit turns round key, 301, limit turn round bearing guided way, 302, limit turn round rack mounting apertures, 401, device overall installation hole, 402, force transducer metallic channel, 403, limit turn round rack mounting apertures, 404, linear bearing installing hole.

Detailed description of the invention

Work piece holder 1 is connected, at straight line bottom this straight optical axis by optical axis trip bolt 8 is fixing with straight optical axis 7 With force cell 6 thread connection in bearing 2 guide rail, force cell 6 is at linear bearing 2 guide rail inner bottom part and turns Fishplate bar 4 thread connection, linear bearing 2 and keyset 4 are by linear bearing installing hole 404 screw threads for fastening, workpiece clamp Tool 1 and limit are turned round bearing 5 and are turned round bearing mounting hole 105 thread connection by limit, and limit is turned round bearing 5 and turned round the limit on support with limit Turning round bearing guided way 301 matched in clearance, limit is turned round support 3 and is turned round rack mounting apertures one with keyset 4 by respective limit 302, limit torsion rack mounting apertures 2 403 is threaded；

Described work piece holder 1 structure is: include that feed tank 104, workpiece slot 103 are used for coordinating location with workpiece gap, Again by workpiece limit torsion screw 101 workpiece pressing limit torsion key 106 at taper key groove 102, keyset has power sensing Device metallic channel 402, it is ensured that while linear bearing tightening, force sensor data line is guided.

It is screw bolt-type roller bearing that limit turns round bearing 5, and straight optical axis is linear bearing optical axis, and workpiece limit turns round key and workpiece Contact site is the most coarse, and workpiece limit turns round key has constant slope with taper key slot fit mask, and workpiece limit turns round the screw of key Installing hole is half perforate so that it is can have certain slip during fastening, it is simple to jam-packed workpiece.

Application example is as it is shown in figure 9, milling and casting machine tool is by work piece holder 1, machine tool main body 9, lathe z-axis 10, lathe X-axis 11, lathe y-axis 12, grinding and polishing instrument 13, grinding and polishing tool heads 14, workpiece 15 form, and workpiece tightening is in work In part groove, polishing fluid is placed in feed tank 104, and work piece holder is installed on lathe x by device overall installation hole 401 On axle 11, grinding and polishing instrument 13 is installed in lathe z-axis 10, lathe z-axis 10, lathe x-axis 11, lathe y Axle 12 precision is installed in machine tool main body 9.

After each parts installation and debugging, by lathe z-axis feeding, grinding and polishing tool heads and absorption surface, and pass through into To amount applying operating force on workpiece, and the workpiece being arranged in workpiece slot, pass through with taper key groove because there being workpiece limit to turn round key Screw fastens, and turns round in limit and opened a groove on key and give limit and turn round the Frictional Slipping degree of freedom that key is certain, can effective jam-packed Workpiece, limits the torsion of workpiece, and workpiece slot limits workpiece respectively to degree of freedom；Throw instrument when rubbing down and apply power on workpiece Time, because work piece holder is held tightly with straight optical axis, it is impossible to reverse, translate, operating force makes work piece holder produce operating force side Translation upwards, is directly passed to straight optical axis, the excellent properties of linear bearing, makes the straight optical axis can be almost without friction Ground translation, the force cell coupled with straight optical axis because of straight optical axis translation produce its measurement direction on displacement and Deformation, thus be converted into the amplified device of the signal of telecommunication and amplify and can be then based on by data collecting card collection to computer Labview real-time acquisition system shows operating force data, real-time feedback control operating force in real time, can realize operating force permanent Determine or by required change；Linear bearing operating force measure direction almost without friction, so torsional freedom is turned round by limit Support limits, and limit is turned round support and is fixed on keyset, limits each to degree of freedom, and limit is turned round and had gathering sill on support, Turning round bearing clearance with limit to coordinate, limit is turned round bearing and without Frictional Slipping in metallic channel, and can not be able to be reversed, and limit turns round bearing The end of thread and work piece holder tightening, the most not only limit the torsion of workpiece but also realize workpiece in operating force measurement direction without rubbing Wipe；In actual processing, because lathe degree of freedom and surface of the work face type are different, operating force may not be at vertical direction, can It is converted into actual operating force through coordinate transform by measuring gained vertical direction power.

Claims (2)

1. one kind based on real-time online power measurable intelligence grinding and polishing fixture, it is characterised in that: work piece holder is with straight Linear light axle connects by optical axis trip bolt is fixing, passes with dynamometry bottom this straight optical axis in Linear bearing guide rail Sensor thread connection, force cell is at Linear bearing guide rail inner bottom part and keyset thread connection, linear bearing Turn round bearing with limit torsion bearing by limit with keyset install by linear bearing installing hole screw threads for fastening, work piece holder Hole is threaded, and limit torsion bearing is turned round the limit on support with limit and turned round bearing guided way matched in clearance, limits and turns round support and turn Fishplate bar is threaded by respective limit torsion rack mounting apertures one, limit torsion rack mounting apertures two.

The most according to claim 1 based on real-time online power measurable intelligence grinding and polishing fixture, its feature exists In: the structure of described work piece holder is: include feed tank, and workpiece slot for coordinating location, again with workpiece gap By workpiece limit torsion screw in compression workpiece limit torsion key at taper key groove, keyset has force transducer metallic channel.