CN1070478A - Very deep internal hole Rockwell apparatus - Google Patents

Very deep internal hole Rockwell apparatus Download PDF

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Publication number
CN1070478A
CN1070478A CN 91108716 CN91108716A CN1070478A CN 1070478 A CN1070478 A CN 1070478A CN 91108716 CN91108716 CN 91108716 CN 91108716 A CN91108716 A CN 91108716A CN 1070478 A CN1070478 A CN 1070478A
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CN
China
Prior art keywords
diameter
worm
instrument
garden
transducer
Prior art date
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Pending
Application number
CN 91108716
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Chinese (zh)
Inventor
高凤武
张志杰
杜汉华
徐航
栾占友
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No4 Room Of Armoured Force Engineering Inst
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No4 Room Of Armoured Force Engineering Inst
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by No4 Room Of Armoured Force Engineering Inst filed Critical No4 Room Of Armoured Force Engineering Inst
Priority to CN 91108716 priority Critical patent/CN1070478A/en
Publication of CN1070478A publication Critical patent/CN1070478A/en
Pending legal-status Critical Current

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Abstract

The HD1-60 very deep internal hole Rockwell apparatus as shown.This instrument is made up of press head group, sleeve, kinematic train, bracing frame, controller and microprocessor system.It is the new type measuring instrument device of measuring logical (blind) hole hardness.Important technological parameters: measure aperture:  38～100.5 and fathom: 0～800 measures durometer level: HRC25～72 instrument indication errors: ± 1.5HR instrument indicating value change degree: this instrument of 2HRC has compact conformation, volume characteristics little, in light weight, easy to use.Be fit to the measurement of finished product pipe fitting endoporus hardness, with showing HRA, HRB, HRC, HB, HV on computer acquisition and the data processing screen simultaneously and printing measurement result automatically.The characteristics of this instrument are: need not increase any annex, realize the measurement of four kinds of loads.

Description

Very deep internal hole Rockwell apparatus
One, general introduction:
The special deep hole Rockwell hardometer of our development is for solving the Rockwell hardometer of oil pump line (diameter of phi 38～Φ 100.5) endoporus hardness special use.This instrument also can be surveyed the endoporus hardness of other pipe fitting except that the oil pump line.It has overcome analogous instrument processing technology complexity, and shortcoming such as the load spring-loaded is inaccurate, and the measured hole degree of depth is little, and harmless and on-the-spot the detection brings convenience for finished product.
Two, important technological parameters
1 measures aperture Φ 38～100.5
The 2 dark amount degree of depth 0～800
3 tighten up power 150Kg
4 dark amount durometer level HRC25～72
5 franchise 10Kg ± 2% change degree＜1.5% that preload
6 total franchise 60Kg ± 1% change degree＜0.5% that carry
7 instrument indication errors ± 1.5HR
8 instrument indicating value change degree 2HR
Three, principle of work (Fig. 1 shows)
This instrument adopts 120 ° of garden cone angles according to the Rockwell principle design, and garden, top arc radius is the diamond penetrator of 0.2mm.Initial load is 10 kilograms, and main bear is 50 kilograms, and total lotus is 60 kilograms a non-traditional Rockwell load (150 kilograms of tradition).Its concrete grammar is successively to revolve to add initial load on the measured workpiece surface, allow diamond penetrator slowly be pressed into the test specimen surface, add main lotus again and keep certain hour, shed main lotus, keep lotus just, whole procedural depth is after being recorded by displacement transducer, can draw the HR hardness number according to the Rockwell formula, its principle is seen Fig. 1.
1 revolves and adds initial load F0=10 kilogram, and diamond penetrator is pressed into surface of the work h 0
2 revolve and add total load F=60 kilogram, and the adamas compression distance is h 2
3 shed main load, and when keeping initial load, adamantine compression distance is h 1
HR＝100－ (｜h 1-h 0｜)/(c) ×n
HR is a stiffness units
100-indicator range value
The C-constant is 0.002mm
n＝1
Four, the design feature of instrument and critical piece Structure Calculation
This instrument is that the test request according to the oil pump line designs, principal feature is: it is long that measuring workpieces pore diameter range big (Φ 38～100.5) enters the workpiece degree of depth, and all be that the product that make detect, destructiveness is little, require in development according to these, overcome existing inner hole hardness meter by the load spring-loaded from principle and structure,, thereby caused reinforcing to be forbidden to influence shortcomings such as measuring accuracy because of the spring shop characteristic is difficult to guarantee.And can measure HRA, HRC, HR15N, HR30N, HR45N.Draw simulation curve and equation by finding the solution.Also can draw corresponding HRB, HB, HV equal hardness value by microcomputer.
This instrument is mainly by press head group, sleeve, kinematic train, bracing frame, controller, microprocessor system.See Fig. 2.
1, press head group (Fig. 3)
Press head group is made up of parts such as sensor support 1, displacement transducer 2, fixed head 3, slide block 4, cam 5, pressure transducer 6, ball 8, diamond penetrator 9, spring compressor 10, retracing spring 11, connection gussets 12.
Displacement transducer 2 fixes by displacement transducer support 1 and fixed supported slab 3, the fixedly slide block 4 of force transducer 6 right-hand members, and it can motion smoothly up and down in the guide rail of pressing plate 13 and fixed head composition.Displacement transducer 2 and force transducer 6 interrelate by gusset 12.Pressure transducer 6 can move up and down when cam 5 rotated.Diamond penetrator 9 directly is fixed on the preceding lower end of force transducer 6, and when camming action during in force transducer 6, diamond penetrator 9 is pressed into surface of the work, and the gauge head motion of simultaneous displacement sensor 2 can be measured the compression distance of diamond penetrator 9.This structure has guaranteed that diamond penetrator 9 vertically moves up and down, rather than does the arc motion of little garden, thereby has improved measuring accuracy.The afterburning useless tangential force and the confining force sensor 6 afterburning arm of forces that produce do not change when rotating in order to eliminate cam 5, and the axis along diamond penetrator 9 between cam 5 and force transducer 6 is installed ball 8, and ball diameter is Φ 2.3.In order to reduce the diamond penetrator impact and displacement transducer 2 to be moved up and down steadily, between slide block 4 and sleeve 7, buffer spring 11 is housed.
The geometric parameter of several critical parts
(1) retracing spring 11
Steel wire diameter φ 0.5
Carbon spring steel wires II-φ 0.5
Middle footpath D 2=2.8mm
Number of total coils n 1=16
Number of active coils n=14
Free height H 0=15.6mm
Pitch t=1.03mm
Exterior angle α=7 °
Length of run L=124mm
(2) diamond penetrator 9
Diameter phi=6mm
Apex angle=120 ° ± 30
Vertex of a cone garden arc radius R=0.2 ± 0.01
(3) cam 5
Generating circle radius r=4.5mm
In 180 °, open journey h=2.3mm
Equation of motion S=(h)/(Φ) φ=2.3/ (π)=0.73 φ
φ: the angle of rotation (Circular measure)
2. sleeve
Shown among the figure 7 and 26, play the effect of protection pressure head and transmission support, when measuring hardness, play being used as of robust support frame simultaneously, to guarantee that pressure head is vertical with workpiece.Tens parts such as pressurized head systems, kinematic train, clamping system all are assemblied in its inside.Measure little endoporus Φ 38 in order to guarantee simultaneously, the external diameter of sleeve is limited in the Φ 38, and length sleeve is 900.For the weight reduction sleeve is processed into notch cuttype.
3, kinematic train (Fig. 4)
Kinematic train is made up of handwheel 14, worm gear 17, worm screw 16 and driving stem 19.
In order to make cam afterburning evenly, be easy to control afterburning order of accuarcy, simultaneously can be when stopping to drive non-slip and worm gear, worm mechanism have been adopted in self-locking.When driving handwheel 14 rotations, driving stem 19 drives cams (No. 5 parts) and rotates.The size of rotating ratio is again the key of the afterburning control of worm and gear system.1: 30 speed ratio of this appliance requires is comparatively suitable.Speed ratio increases, and calibration garden diameter increases and the assembly space of pull bar 20 conflicts.So this structure has been taked the worm sector shown in the part 17, both solved the contradiction of assembly space, solved again and prevented that pressure overload (P＞60 kilogram) from causing the excessive position-limiting action of workpiece pressuring mark, allow cam 164 ° spatial rotation.
The physical dimension of gear train:
Centre distance a '=19
Modulus m=1
Speed ratio i=1: 30
Worm gear calibration garden diameter d=30
Worm gear tooth top garden diameter d 1=32
The maximum garden of worm gear diameter d W2=33
Worm gear tooth root garden diameter d F2=27.5
Worm gear width B=4.21
Worm indexing garden diameter d 1=8
The maximum garden of worm screw diameter d W1=10
Number of threads 1
Length of worm L=14
Driving stem diameter of phi 9
Driving stem length L=771
4, support clamping system (Fig. 5)
Clamping system is made up of pull bar 27, movable plate 23, supporting seat 24, pin 28, support gusset 21.
The propclip clamping system of endoporus hardness measurement is one of key issue of determining measuring accuracy and reliability, because the restriction of minimum endoporus Φ 38, that adopts Fig. 5 has solved the little contradiction of assembly space rational in infrastructurely.
Movable plate 23 is long-armed that two symmetric forms are arranged, the fixing pin of Φ 4 respectively on two arms, when the pull bar 27 that has acme thread rotates, movable plate 23 can seesaw, two level troughs are arranged on urceolus bracing frame 26, support two of gusset 21() top has the skewed slot with 15 ° of horizontal sextant angles respectively, when 21 this moments of mobile gusset around pivot pin 28 opening and closing up and down.Open during measurement and the bore area clamping, measurement finishes closed gauge head can be from suction in the workpiece.The about 120 kg of clamping force.When measuring different bores, can utilize the pin 30(of I-shaped head 29 and Φ 4 to see Fig. 6) and the be connected hardness of endoporus such as can measuring Φ 44, Φ 57, Φ 70, Φ 83, Φ 88, Φ 95, Φ 100.5 of support gusset 21.
Five, controller
Switch, path selector switch, numeric data code demonstration, zeroing knob etc. are arranged on control panel.Its circuit theory is seen Fig. 7.
Six, microprocessor system
Microprocessor system is made up of interface board, computing machine and plotting apparatus.Enter computing machine by the signal of hardness gauge head collection through interface board and carry out data processing.Can show HRC, HRA, three kinds of hardness numbers of HRB on the computer screen simultaneously, go out measurement result by printer prints.Its data acquisition and handling principle are seen hardness data acquisition and handling procedure block diagram.(see figure 8)

Claims (5)

1, a kind of very deep internal hole Rockwell apparatus is characterized in that being made up of press head group, sleeve, kinematic train, bracing frame, controller and microprocessor system.
2, according to claim 1) said press head group, it is characterized in that by sensor support, displacement transducer, fixed head, slide block, cam, pressure transducer, ball, diamond penetrator, spring compressor, retracing spring and be connected gusset forming.Displacement transducer fixes by displacement sensor bracket and fixed supported slab.The fixedly slide block of force transducer right-hand member, it can motion smoothly up and down in the guide rail of pressing plate and fixed head composition.Displacement transducer and force transducer interrelate by gusset.Can move up and down during cam rotation.Diamond penetrator is fixed on the preceding lower end of force transducer, and when camming action during in force transducer, diamond penetrator is pressed into surface of the work, and the motion of simultaneous displacement transducer probe assembly can be measured the compression distance of diamond penetrator.The afterburning tangential force that produces and the maintenance arm of force do not change when rotating in order to eliminate cam, along the adamas axis direction ball are housed between cam and force transducer, and ball diameter is Φ 2.3.In order to reduce the diamond penetrator impact and displacement transducer to be moved up and down steadily, between slide block and cover angle, buffer spring is housed.
The geometric parameter of several critical parts:
Retracing spring
Steel wire diameter Φ 0.5mm
Carbon spring steel wires II-Φ 0.5
Middle footpath D 2=2.8mm
Number of total coils n 1=14mm
Number of active coils n=14mm
Free height H 0=15.6mm
Pitch t=1.03mm
Lift angle α=7 °
Length of run L=124mm
Diamond penetrator
Diameter of phi 6mm
Apex angle=120 ° ± 30 '
Vertex of a cone garden arc radius R=0.2 ± 0.01mm
Cam
Generating circle radius r=4.5mm is lift h=2.3mm in 180 °
3, according to claim 1) said sleeve, it is characterized in that external diameter be limited in Φ 38 with, length sleeve is 900.
4, claim 1) said kinematic train is characterized in that being made up of handwheel, worm gear, worm screw and driving stem.When driving the handwheel rotation, worm and wormwheel rotates, and driving stem rotates and also drives cam rotation.Worm gear is fan-shaped, has solved the pressure overload and has caused the excessive position-limiting action of workpiece pressuring mark.
Each part geometry size of gear train:
The centre distance a ' of worm and gear=19
Worm and gear modulus m=1
Speed ratio i=1: 30
Worm gear calibration garden diameter d=30mm
Worm gear tooth top garden diameter d A2=32mm
The maximum garden of worm gear diameter d W2=33mm
Worm gear tooth root garden diameter d F2=27.5mm
Worm gear width B=4.21mm
The calibration garden diameter d of worm screw 1=8mm
The maximum garden diameter d of worm screw W1=10mm
Number of threads 1
Worm thread length L=14mm
Driving stem diameter of phi 9mm
Driving stem length L=771mm
5, according to claim 1) said propclip clamping system is characterized in that being made up of pull bar, movable plate, supporting seat, pin, pivot pin and support gusset.Movable plate is long-armed that two symmetric forms are arranged, the fixing pin of Φ 8 respectively on two arms, when the pull bar that has acme thread rotated, movable plate can seesaw, two level troughs are arranged on the exterior angle bracing frame, support gusset top has the skewed slot with 15 ° of horizontal sextant angles respectively, and when the movable plate tangential movement, pin is tangential movement also, support gusset at this moment around pivot pin opening and closing up and down, open during measurement and the bore area clamping, measure the closure that finishes, gauge head can be from the interior extraction of working.The about 120 kg of clamping force.When measuring different bores, can utilize the be connected hardness of endoporus such as can measuring Φ 44, Φ 57, Φ 70, Φ 83, Φ 88, Φ 95, Φ 100.5 of I-shaped head, pin and support gusset.
CN 91108716 1991-09-10 1991-09-10 Very deep internal hole Rockwell apparatus Pending CN1070478A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 91108716 CN1070478A (en) 1991-09-10 1991-09-10 Very deep internal hole Rockwell apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 91108716 CN1070478A (en) 1991-09-10 1991-09-10 Very deep internal hole Rockwell apparatus

Publications (1)

Publication Number Publication Date
CN1070478A true CN1070478A (en) 1993-03-31

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ID=4909435

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 91108716 Pending CN1070478A (en) 1991-09-10 1991-09-10 Very deep internal hole Rockwell apparatus

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104297085A (en) * 2014-10-28 2015-01-21 合肥卓越分析仪器有限责任公司 Digital display-type mold hardness measuring device
CN105021486A (en) * 2015-07-16 2015-11-04 西安航空动力股份有限公司 Device for calibration of metal rockwell hardness tester indentation depth measurement systems
CN108169042A (en) * 2017-11-23 2018-06-15 江阴市永兴机械制造有限公司 A kind of rockwell hardness testing machine
CN113848144A (en) * 2021-10-02 2021-12-28 华畤迪科技(无锡)有限公司 Inner tube internal diameter hardness test instrument

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104297085A (en) * 2014-10-28 2015-01-21 合肥卓越分析仪器有限责任公司 Digital display-type mold hardness measuring device
CN104297085B (en) * 2014-10-28 2018-03-02 合肥市再德高分子材料有限公司 A kind of digital display type die hardness measurement apparatus
CN105021486A (en) * 2015-07-16 2015-11-04 西安航空动力股份有限公司 Device for calibration of metal rockwell hardness tester indentation depth measurement systems
CN108169042A (en) * 2017-11-23 2018-06-15 江阴市永兴机械制造有限公司 A kind of rockwell hardness testing machine
CN113848144A (en) * 2021-10-02 2021-12-28 华畤迪科技(无锡)有限公司 Inner tube internal diameter hardness test instrument

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