CN104807708A - Fully automatic Rockwell hardness meter and control method - Google Patents
Fully automatic Rockwell hardness meter and control method Download PDFInfo
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- CN104807708A CN104807708A CN201510229134.5A CN201510229134A CN104807708A CN 104807708 A CN104807708 A CN 104807708A CN 201510229134 A CN201510229134 A CN 201510229134A CN 104807708 A CN104807708 A CN 104807708A
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- afterburning
- servomotor
- full automatic
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Abstract
The invention discloses a fully automatic Rockwell hardness meter and a control method. The fully automatic Rockwell hardness meter comprises an object carrying table, a power transfer system, an impression measuring structure, a load collecting device and a control system, wherein the object carrying table is used for supporting specimens, the power transfer system is used for exerting the pressure on the specimens, the impression measuring structure is used for measuring the impression depth, the load collecting device is used for collecting the load of the power transfer system, the object carrying table vertically moves through being driven by a driving device, the power transfer system comprises a servo motor and a force application lever, and the servo motor drives the force application lever through a speed reducing machine and a connecting mechanism, so that a press head downwards presses the specimens, the load collecting device collects the force application value of the force application lever in real time, in addition, the load collecting device is connected with the control system, and the control system controls the force application value of the force application lever in real time according to the collected data.
Description
Technical field
The invention discloses a kind of full automatic Rockwell's hardness and take into account control method.
Background technology
Current Rockwell hardometer adopts what mostly adopt to be lever and weight structure, needs the initial force value of manual loading and select to protect to carry a force value when testing, and this mode of operation is inconvenient and easily introduce human error.
A kind of Autoamtic rockwell apparatus is disclosed in patent [201120303713.7], but the more and complicated heaviness of the physical construction mounting parts of this patent, grating scale is accurate not as LVDT for the measurement effect of microdeformation simultaneously, and this main frame pressing disc moves and needs manual operation.
Summary of the invention
In order to solve the technological deficiency existed in prior art, the invention discloses a kind of full automatic Rockwell hardometer.
The technical solution used in the present invention is as follows:
A kind of full automatic Rockwell hardometer, comprise the objective table for supporting sample, stressed power-transmission system is executed to sample, to the indentation measurement structure that depth of cup is measured, the load harvester that the load of power-transmission system is gathered and control system, described objective table moves up and down under the driving of drive unit, described power-transmission system comprises a servomotor and afterburning lever, described servomotor drives afterburning lever that pressure head is pressed down sample by reductor and bindiny mechanism, the afterburning size of the afterburning lever of collection that described load harvester is real-time, and load harvester is connected with control system, described control system is according to the afterburning size of the afterburning lever of the control that the data gathered are real-time.
Described load harvester is strain chip load sensor, it gathers the afterburning size of afterburning lever leading portion pressure head, and the signal of collection is sent to control system, the signal that described control system gathers according to strain chip load sensor controls servomotor, and then realizes automatically loading initial force value and protecting carrying force value.
Described indentation measurement structure is differential transformer (LVDT), and described differential transformer is gathered pressure head compression distance and changed by data and calculate corresponding experiment hardness number.
Described drive unit, comprises a stepper motor, objective table, elevating screw and synchronous pulley; The output terminal of described stepper motor fixes synchromesh gear, described synchromesh gear connects synchronous pulley by Timing Belt, elevating screw nut is connected inside described synchronous pulley, in the lower end of leading screw, thrust ball bearing is installed, when described thrust bearing ensures that synchronous belt drive mechanism drives feed screw nut to rotate, resistance is minimum, and in the bottom of leading screw, orienting lug is installed, when described orienting lug ensures that feed screw nut turns round, leading screw does straight line elevating movement, connects objective table and drive sample to move above leading screw.
Described power-transmission system, comprises an afterburning lever, load sensor, servomotor, reductor and speed reducing pulley; Described servomotor is connected with reductor, the described reductor other end fixes small synchronous pulley, described small synchronous pulley connects large synchronous pulley by Timing Belt, large synchronous pulley is connected with feed screw nut, in leading screw upper end by connecting link connected load sensor, load sensor opposite side connects afterburning lever, and afterburning lever one end is fixed, the other end stretches out main frame, at its head installation test pressure head.
The stiff end of described afterburning lever is arranged on the main machine body of Rockwell hardometer.
The output terminal of described control system is connected with touch-screen and printer.
Control method of the present invention is as follows:
Press the test button of touch-screen, controller control step motor rotates, and stepper motor drives elevating screw to rise, and stops after pressure head touches sample;
Servomotor starts, servomotor drives afterburning lever that pressure head is pressed down by reductor and bindiny mechanism and tests, the data of the collection strain chip load sensor that controller is real-time, and according to the Data Control servomotor that it gathers, servomotor is by controlling the motion of leading screw, realize the adjustment to the afterburning size of afterburning lever, realize the initial force value of automatic loading of boosting-rod and protect a year force value; Differential transformer is gathered pressure head compression distance and is changed by data and calculate corresponding experiment hardness number simultaneously, and carrying out real-time on the touchscreen shows;
Tested on rear afterburning lever and moved reset, stepper motor drives elevating screw to decline and makes sample disengaging pressure head, and test completes.
Beneficial effect of the present invention is as follows:
The present invention adopts servomotor to be combined with stepper motor, the feedback loading control model of strain-gauge transducer, automatically loads initial force value and protect to carry force value, and experimentation is without the need to manual intervention, and a key operation, automatically completes and test and draw experimental data.
Accompanying drawing explanation
Fig. 1 front view of the present invention;
Fig. 2 vertical view of the present invention;
Fig. 3 side view of the present invention;
In figure: 1 touch-screen, 2 differential transformers, 3 pressure heads, 4 samples, 5 objective tables, 6 elevating screws, 7 synchronous pulleys, 8 control knobs, 9 stepper motors, 10 upper casings, 11 afterburning levers, 12 change-over panels, 13 bearings, 14 controllers, 15 load sensors, 16 servomotors, 17 reductors, 18 printers, 19 power supplys, 20 Timing Belts, 21 main frames, 22 foot bolt.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail;
A kind of full automatic Rockwell hardometer, the indentation measurement structure, the load harvester that the load of power-transmission system is gathered and the control system that comprising the objective table 5 for supporting sample 4, sample being executed to stressed power-transmission system, depth of cup is measured, described objective table 5 moves up and down under the driving of drive unit, described power-transmission system comprises a servomotor and afterburning lever, and described servomotor drives afterburning lever that pressure head 3 pairs of samples are pressed down by reductor and bindiny mechanism.
Described load harvester is strain chip load sensor 15, it gathers the afterburning size of afterburning lever 11 leading portion pressure head, and the signal of collection is sent to controller 14, the signal that controller 14 gathers according to strain chip load sensor controls servomotor, and then realizes automatically loading initial force value and protecting carrying force value.
Power supply 19 is powered for power-transmission system, drive unit, control system, printer 18 and touch-screen, and touch-screen 1 is connected with control system with printer 18,
Indentation measurement structure is differential transformer 2 (LVDT), and described differential transformer is gathered pressure head compression distance and changed by data and calculate corresponding experiment hardness number.
Drive unit, comprise a stepper motor 9, elevating screw 6, synchronous pulley 7, the output terminal of the stepper motor 9 of this structure fixes synchromesh gear, connects synchronous pulley 7, connect elevating screw nut inside synchronous pulley 7 by Timing Belt, when the thrust ball bearing of leading screw lower end ensures that synchronous belt drive mechanism drives feed screw nut to rotate, resistance is minimum, and when the orienting lug bottom leading screw ensures that feed screw nut turns round, leading screw does straight line elevating movement.
Connecting objective table 5 above leading screw drives sample 4 to move.
Power-transmission system, comprises an afterburning lever 11, load sensor 15, servomotor 16, reductor 17, speed reducing pulley 20; This structure servomotor 16 directly connects reductor 17, reductor 17 other end fixes small synchronous pulley, large synchronous pulley is connected by Timing Belt 20, this synchronous pulley is connected with feed screw nut, leading screw upper end is by connecting link connected load sensor, sensor opposite side connects afterburning lever 11, and one end of afterburning lever 11 is fixed, and the other end stretches out host machine part head and installs experiment pressure head.The stiff end of afterburning lever 11 is arranged on main frame 21 fuselage of Rockwell hardometer by bearing 13.
In the bottom of main frame, foot bolt 22 is installed.
Control knob 8 in figure is connected with controller 14, for manually adjusting stage position to adapt to the detection demand of differing heights sample.
The concrete course of work is as follows:
Press the test button of touch-screen, controller control step motor rotates, and stepper motor drives elevating screw to rise, and stops after pressure head touches sample, then servomotor starts, servomotor drives afterburning lever that pressure head is pressed down by reductor and bindiny mechanism and tests, the data of the collection strain chip load sensor that controller is real-time, and according to the Data Control servomotor that it gathers, described servomotor is by controlling the motion of leading screw, realize the adjustment to the afterburning size of afterburning lever, realize the initial force value of automatic loading of boosting-rod and protect a year force value, gather pressure head compression distance by LVDT simultaneously and calculate corresponding experiment hardness number by the conversion of the data of change-over panel 12 and control system, and carrying out real-time on the touchscreen shows.Tested on rear afterburning lever and moved reset, stepper motor drives elevating screw to decline and makes sample disengaging pressure head, and test completes.
Claims (10)
1. a full automatic Rockwell hardometer, it is characterized in that: comprise the objective table for supporting sample, stressed power-transmission system is executed to sample, to the indentation measurement structure that depth of cup is measured, the load harvester that the load of power-transmission system is gathered and control system, described objective table moves up and down under the driving of drive unit, described power-transmission system comprises a servomotor and afterburning lever, described servomotor drives afterburning lever that pressure head is pressed down sample by reductor and bindiny mechanism, the afterburning size of the afterburning lever of collection that described load harvester is real-time, and load harvester is connected with control system, described control system is according to the afterburning size of the afterburning lever of the control that the data gathered are real-time.
2. full automatic Rockwell hardometer as claimed in claim 1, it is characterized in that: described load harvester is strain chip load sensor, it gathers the afterburning size of afterburning lever leading portion pressure head, and the signal of collection is sent to control system, the signal that described control system gathers according to strain chip load sensor controls servomotor, and then realizes automatically loading initial force value and protecting carrying force value.
3. full automatic Rockwell hardometer as claimed in claim 1, is characterized in that: described indentation measurement structure is differential transformer, and described differential transformer is gathered pressure head compression distance and changed by data and calculate corresponding experiment hardness number.
4. full automatic Rockwell hardometer as claimed in claim 1, is characterized in that: described drive unit, comprises a stepper motor, objective table, elevating screw and synchronous pulley; The output terminal of described stepper motor fixes synchromesh gear, and described synchromesh gear connects synchronous pulley by Timing Belt, connects elevating screw nut inside described synchronous pulley, connects objective table and drive sample to move above leading screw.
5. full automatic Rockwell hardometer as claimed in claim 4, is characterized in that: be provided with thrust ball bearing in the lower end of leading screw, and when described thrust bearing ensures that synchronous belt drive mechanism drives feed screw nut to rotate, resistance is minimum.
6. full automatic Rockwell hardometer as claimed in claim 4, is characterized in that: be provided with orienting lug in the bottom of leading screw, and when described orienting lug ensures that feed screw nut turns round, leading screw does straight line elevating movement.
7. full automatic Rockwell hardometer as claimed in claim 1, is characterized in that: described power-transmission system, comprises an afterburning lever, load sensor, servomotor, reductor and speed reducing pulley; Described servomotor is connected with reductor, the described reductor other end fixes small synchronous pulley, described small synchronous pulley connects large synchronous pulley by Timing Belt, large synchronous pulley is connected with feed screw nut, in leading screw upper end by connecting link connected load sensor, load sensor opposite side connects afterburning lever, and afterburning lever one end is fixed, the other end stretches out main frame, installs experiment pressure head at its head.
8. full automatic Rockwell hardometer as claimed in claim 7, is characterized in that: the stiff end of described afterburning lever is arranged on the main machine body of Rockwell hardometer.
9. full automatic Rockwell hardometer as claimed in claim 1, is characterized in that: the output terminal of described control system is connected with touch-screen and printer.
10. the control method of full automatic Rockwell hardometer as claimed in claim 1, is characterized in that, as follows:
Press the test button of touch-screen, controller control step motor rotates, and stepper motor drives elevating screw to rise, and stops after pressure head touches sample;
Then servomotor starts, servomotor drives afterburning lever that pressure head is pressed down by reductor and bindiny mechanism and tests, the data of the collection strain chip load sensor that controller is real-time, and according to the Data Control servomotor that it gathers, servomotor is by controlling the motion of leading screw, realize the adjustment to the afterburning size of afterburning lever, realize the initial force value of automatic loading of boosting-rod and protect a year force value; Differential transformer is gathered pressure head compression distance and is changed by data and calculate corresponding experiment hardness number simultaneously, and carrying out real-time on the touchscreen shows;
Tested on rear afterburning lever and moved reset, stepper motor drives elevating screw to decline and makes sample disengaging pressure head, and test completes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510229134.5A CN104807708A (en) | 2015-05-07 | 2015-05-07 | Fully automatic Rockwell hardness meter and control method |
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| CN201510229134.5A CN104807708A (en) | 2015-05-07 | 2015-05-07 | Fully automatic Rockwell hardness meter and control method |
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| CN104807708A true CN104807708A (en) | 2015-07-29 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105403473A (en) * | 2015-11-03 | 2016-03-16 | 毛国强 | Digital display Rockwell hardness tester |
| CN106290032A (en) * | 2016-08-31 | 2017-01-04 | 嘉善耐博精密仪器有限公司 | A kind of portable Rockwell apparatus |
| CN108693038A (en) * | 2018-07-24 | 2018-10-23 | 鞍山星源达科技有限公司 | Metallurgical or coking material performance measurement experiment increase the load automatically device and method |
| CN108693039A (en) * | 2018-07-24 | 2018-10-23 | 鞍山星源达科技有限公司 | A kind of granular material compressive strength determination device and method |
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| CN204536142U (en) * | 2015-05-07 | 2015-08-05 | 济南时代试金仪器有限公司 | A kind of full automatic Rockwell hardometer |
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2015
- 2015-05-07 CN CN201510229134.5A patent/CN104807708A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101587047A (en) * | 2009-07-20 | 2009-11-25 | 中国航空工业第一集团公司北京长城计量测试技术研究所 | High-precision hardness tester force value loading adjusting device |
| CN102213661A (en) * | 2010-04-09 | 2011-10-12 | 吴绍明 | Universal testing machine |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105403473A (en) * | 2015-11-03 | 2016-03-16 | 毛国强 | Digital display Rockwell hardness tester |
| CN106290032A (en) * | 2016-08-31 | 2017-01-04 | 嘉善耐博精密仪器有限公司 | A kind of portable Rockwell apparatus |
| CN106290032B (en) * | 2016-08-31 | 2019-03-15 | 嘉善耐博精密仪器有限公司 | A kind of portable Rockwell apparatus |
| CN108693038A (en) * | 2018-07-24 | 2018-10-23 | 鞍山星源达科技有限公司 | Metallurgical or coking material performance measurement experiment increase the load automatically device and method |
| CN108693039A (en) * | 2018-07-24 | 2018-10-23 | 鞍山星源达科技有限公司 | A kind of granular material compressive strength determination device and method |
| CN108693038B (en) * | 2018-07-24 | 2023-07-14 | 鞍山星源达科技有限公司 | Automatic load loading device and method for metallurgical or coked material performance measurement experiment |
| CN108693039B (en) * | 2018-07-24 | 2024-02-06 | 鞍山星源达科技有限公司 | Device and method for measuring compressive strength of granular materials |
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Application publication date: 20150729 |
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