CN203772664U - Rockwell hardness tester motor loading measurement mechanism - Google Patents
Rockwell hardness tester motor loading measurement mechanism Download PDFInfo
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- CN203772664U CN203772664U CN201420119481.3U CN201420119481U CN203772664U CN 203772664 U CN203772664 U CN 203772664U CN 201420119481 U CN201420119481 U CN 201420119481U CN 203772664 U CN203772664 U CN 203772664U
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- 238000005259 measurement Methods 0.000 title abstract description 8
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- 230000006698 induction Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 12
- 230000008569 process Effects 0.000 abstract description 12
- 238000012423 maintenance Methods 0.000 abstract description 3
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- 238000005303 weighing Methods 0.000 abstract 1
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- 238000007542 hardness measurement Methods 0.000 description 1
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Abstract
The utility model discloses a rockwell hardness tester motor loading measurement mechanism. A stepping motor is linked with a screw rod of a main shaft through a synchronous pulley and a nut; a limit blocking slice and a connecting rod are arranged at the upper end of the screw rod of the main shaft; and the connecting rod is connected with a grating displacement sensor. According to the measurement mechanism, a rotating motion of the motor is converted into an up-down motion through the screw rod of the main shaft and the nut; a spring on the main shaft is used for preventing clearances in threads from influencing the displacement measurement of the main shaft; a connecting plate on the main shaft is connected with a guide rod so as to effectively decrease the oscillating quantity of the main shaft during a lifting process, i.e., the stability of the main shaft during the lifting process is improved; and a stable loading force value with good repeatability can be obtained due to the matching of weighing sensors. Thus, based on the structure, weights are not required, so that the correction and the adjustment of the weights during an assembling and debugging process are not required; and the problems of the displacement of the weights and the like are not avoided during an application process. Thus, the debugging cost and the after-sales maintenance cost are saved. The measurement mechanism disclosed by the utility model is simple in structure and very practical.
Description
Technical field
The utility model relates to a kind of physical measurement device, is that a kind of Rockwell hardometer motor loads measuring mechanism specifically.
Background technology
Rockwell hardness measurement is one of the most general hardness detection method of application at present, is widely used in the various aspects of scientific research, production.
Referring to documents 1, the utility model patent of Granted publication CN2575657Y, discloses a kind of " full Rockwell hardometer ".In prior art, it is to rely on counterweight and lever-loading that Rockwell hardometer loads measuring mechanism, by dial gauge, measures.
The shortcoming of counterweight and lever-loading is: complex structure, volume is large, cost of manufacture is high, debugging cost and after-sales service cost high.The great force value needing in Rockwell hardometer process of the test cannot directly obtain with counterweight, must be by obtaining after lever amplification, and that the weight of counterweight has in the situation of small error by the after-applied power on headscrew of lever amplification is will deviation very large, when assembling, each counterweight needs to revise, and workload is very large.Product is sold rear counterweight and is easy to be offset in using or moving process, and added power value on headscrew is had a huge impact, and at this moment needs to readjust or keep in repair, and needs a lot of after costs.And also can only realize by another set of physical construction will switch power value time.The process that adds off-load also needs a motor and a set of buffer structure to control, so original mechanism is too complicated, mach workload is very large, assembling and setting is complicated, poor stability, maintenance cost are high.
The displacement that headscrew moves downward is to rely on dial gauge to measure, and dial gauge precision is 0.01 millimeter, and from dial reading, this just causes artificial reading error very large.
Therefore, need especially a kind of Rockwell hardometer motor to load measuring mechanism, to solve problems of the prior art.
Utility model content
The purpose of this utility model is in order to solve in prior art, counterweight and lever loading mechanism complex structure, volume is large, manufacturing cost is high, mode cost and maintenance cost high, dependence dial gauge is measured, the defect that error is more, provide a kind of Rockwell hardometer motor to load measuring mechanism, solve problems of the prior art.
For achieving the above object, the technical solution of the utility model is as follows:
A kind of Rockwell hardometer motor loads measuring mechanism, comprise base plate, stepper motor, synchronous pulley, headscrew, screw, spacing catch, connecting link and grating displacement sensor are set on described base plate, described stepper motor links by synchronous pulley and screw and headscrew, the upper end of described headscrew arranges spacing catch and connecting link, and described connecting link connects grating displacement sensor.
In the utility model, also comprise web joint, sliding sleeve and be arranged on the guidepost on base plate, described web joint first end is movably set on guidepost by sliding sleeve, and described web joint the second end is fixedly connected with headscrew.
In the utility model, between described base plate and web joint, spring is set.
In the utility model, the lower end of described headscrew arranges LOAD CELLS.
In the utility model, also comprise the limiting photoelectric switch that is arranged on headscrew top, described spacing catch carries out limit induction by limiting photoelectric switch.
Beneficial effect
A kind of Rockwell hardometer motor of the present utility model loads measuring mechanism, compared with prior art, by headscrew and screw, by rotatablely moving of motor, convert to and move up and down, main shaft upper spring avoids screw thread intermediate gap to exert an influence to main shaft displacement measurement, main shaft upper junction plate is connected with guide pole and can effectively makes the oscillating quantity of main shaft in lifting process reduce, improve the stability in lifting spindle process, the cooperation of LOAD CELLS can be stablized, reproducible loading force value; The displacement that measurement main shaft moves up and down changes into by 1:5 lever ratio connecting link and being delivered on grating displacement sensor, 10 times of the original increases of ratio that displacement transducer accuracy selection is 0.001 millimeter, are amplified and can be improved the accuracy of test after its displacement and reduce the impact of small shake on test by connecting link; Because this structure does not need counterweight, so do not need to revise counterweight in Installation and Debugging process, do not need to adjust counterweight, in use do not have the problems such as counterweight displacement yet, saved debugging and after-sales service expense; Simple in structure, very practical, realize the purpose of this utility model.
Accompanying drawing explanation
Fig. 1 structural representation of the present utility model;
The positional structure schematic diagram of the spacing catch of Fig. 2 the utility model.
Wherein: 1, base plate; 2, stepper motor; 3, synchronous pulley; 4, headscrew; 5, screw; 6, spacing catch; 7, connecting link; 8, grating displacement sensor; 9, web joint; 10, sliding sleeve; 11, guidepost; 12, spring; 13, LOAD CELLS; 14, limiting photoelectric switch.
Embodiment
Below in conjunction with accompanying drawing illustrated embodiment, the utility model is further described.
Embodiment
As shown in Fig. 1～2, Fig. 1 is structural representation of the present utility model; Fig. 2 is the positional structure schematic diagram of the spacing catch of the utility model.
A kind of Rockwell hardometer motor loads measuring mechanism, comprise base plate 1, stepper motor 2, synchronous pulley 3, headscrew 4, screw 5, spacing catch 6, connecting link 7 and grating displacement sensor 8 are set on base plate 1, stepper motor 2 is by synchronous pulley 3 and screw 5 and headscrew 4 interlocks, the upper end of headscrew 4 arranges spacing catch 6 and connecting link 7, and connecting link 7 connects grating displacement sensor 8; The power that the utility model loads by main shaft can be very stable, simultaneously can be at the gear of controlling random control in software, without realizing by physical construction, cut down finished cost, because used stepper motor and synchronizing wheel, rotating speed can be by controlling software control, so can remove, transfers the files and the structure such as impact damper, and structure is more simplified.
Rockwell hardometer motor loads a measuring mechanism, also comprises web joint 9, sliding sleeve 10 and is arranged on the guidepost 11 on base plate 1, and web joint 9 first ends are movably set on guidepost 11 by sliding sleeve 10, and web joint 9 second ends are fixedly connected with headscrew 4; Can effectively reduce the wave amount of main shaft in lifting process, the stability in lifting spindle process is provided.
Between base plate 1 and web joint 9, spring 12 is set; Effectively avoid the gap in screw thread transmission to exert an influence to main shaft displacement measurement.
The lower end of headscrew 4 arranges LOAD CELLS 13, by the cooperation of LOAD CELLS 13 can be stablized, reproducible loading force value.
Rockwell hardometer motor loads a measuring mechanism, also comprises the limiting photoelectric switch 14 that is arranged on headscrew 4 tops, and spacing catch 6 carries out limit induction by limiting photoelectric switch 14.
When in use:
All parts are all installed on a base plate 1, electric-control system sends instruction allows stepper motor 2 rotate counterclockwise, drive synchronous pulley 3, screw 5 is rotated, headscrew 4 upwards, also follow and move up, until upper limit by spacing catch 6, this position is initial position, is also the extreme higher position that restriction headscrew 4 continues up.Then in LOAD CELLS 13, apply a small power, stepper motor 2 starts to clockwise rotate, headscrew 4 is moved downward, now connecting link 7 drives the gauge outfit of grating displacement sensor 8 downward, the displacement of synchro measure headscrew 4, as occurred, headscrew 4 is too much to upper/lower positions, can be limited to extreme lower position by spacing catch 6, be loaded into after setting power value headscrew 4 and get back to the highest spacingly, the course of work completes.
The above-mentioned description to embodiment is can understand and use the utility model for ease of those skilled in the art.Person skilled in the art obviously can easily make various modifications to these embodiment, and General Principle described herein is applied in other embodiment and needn't passes through performing creative labour.Therefore, the utility model is not limited to above-described embodiment, and those skilled in the art are according to announcement of the present utility model, and not departing from the improvement that the utility model category makes and revise all should be within protection domain of the present utility model.
Claims (5)
1. a Rockwell hardometer motor loads measuring mechanism, comprise base plate, it is characterized in that: stepper motor, synchronous pulley, headscrew, screw, spacing catch, connecting link and grating displacement sensor are set on described base plate, described stepper motor links by synchronous pulley and screw and headscrew, the upper end of described headscrew arranges spacing catch and connecting link, and described connecting link connects grating displacement sensor.
2. a kind of Rockwell hardometer motor according to claim 1 loads measuring mechanism, it is characterized in that, also comprise web joint, sliding sleeve and be arranged on the guidepost on base plate, described web joint first end is movably set on guidepost by sliding sleeve, and described web joint the second end is fixedly connected with headscrew.
3. a kind of Rockwell hardometer motor according to claim 2 loads measuring mechanism, it is characterized in that: between described base plate and web joint, spring is set.
4. according to a kind of Rockwell hardometer motor one of claims 1 to 3 Suo Shu, load measuring mechanism, it is characterized in that: the lower end of described headscrew arranges LOAD CELLS.
5. a kind of Rockwell hardometer motor according to claim 4 loads measuring mechanism, it is characterized in that, also comprises the limiting photoelectric switch that is arranged on headscrew top, and described spacing catch carries out limit induction by limiting photoelectric switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420119481.3U CN203772664U (en) | 2014-03-14 | 2014-03-14 | Rockwell hardness tester motor loading measurement mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420119481.3U CN203772664U (en) | 2014-03-14 | 2014-03-14 | Rockwell hardness tester motor loading measurement mechanism |
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| CN203772664U true CN203772664U (en) | 2014-08-13 |
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| CN201420119481.3U Expired - Lifetime CN203772664U (en) | 2014-03-14 | 2014-03-14 | Rockwell hardness tester motor loading measurement mechanism |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103884614A (en) * | 2014-03-14 | 2014-06-25 | 上海联尔试验设备有限公司 | Motor load measurement mechanism of Rockwell hardness tester |
-
2014
- 2014-03-14 CN CN201420119481.3U patent/CN203772664U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103884614A (en) * | 2014-03-14 | 2014-06-25 | 上海联尔试验设备有限公司 | Motor load measurement mechanism of Rockwell hardness tester |
| CN103884614B (en) * | 2014-03-14 | 2017-02-15 | 上海联尔试验设备有限公司 | Motor load measurement mechanism of Rockwell hardness tester |
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