CN103383324B - Automatically diamond segment weld strength detector - Google Patents
Automatically diamond segment weld strength detector Download PDFInfo
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- CN103383324B CN103383324B CN201310296045.3A CN201310296045A CN103383324B CN 103383324 B CN103383324 B CN 103383324B CN 201310296045 A CN201310296045 A CN 201310296045A CN 103383324 B CN103383324 B CN 103383324B
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Abstract
The invention provides a kind of diamond segment weld strength detector automatically, belong to technical field of operation.It solve existing intensity detector and there is the problem that detection efficiency is low.This automatic diamond segment weld strength detector includes frame and the fixture for fixed diamond saw blade, and frame is provided with the drive mechanism driving fixture to rotate；Frame is provided with the chuck component being clamped at diamond saw blade substrate outer edge；This intensity detector also includes switch board based on PLC, pressure transducer and pressure head；Frame is provided with the cylinder assembly that energy drive ram moves up and down；Pressure head is connected by pressure transducer with cylinder assembly；The cylinder assembly first line of a couplet is connected to electromagnetic valve；Electromagnetic valve and pressure transducer all electrically connect with PLC.It is high that this automatic diamond segment weld strength detector has detection efficiency, the advantage that accuracy of detection is high.This automatic diamond segment weld strength detector, owing to using air cylinder driven, has the advantage that production cost is low.
Description
Technical field
The invention belongs to technical field of operation, relate to a kind of intensity detector, particularly one
Plant automatic diamond segment weld strength detector.
Background technology
Along with the development of science and technology, the raising of commercial production levels, use artificial diamond
The cast-cutting saw slice of one-tenth cutter head made of stones, thin drilling bit are widely applied.Especially in building
Decoration industry use the most extensive.
Diamond saw blade includes matrix and the soldering diamond segment on substrate.About gold
The pertinent literature of diamond saw blade is more, such as National Standard of the People's Republic of China (GB/T
11270-2002 superabrasive article diamond disc).Describe in the first portion
Welding saw blade, welding saw blade shape and basic size classification etc..At Part II 5.4
Security performance has been recorded in requiring need to carry out sawtooth bond strength test, and the test number of teeth is more than
The I/2 of total number of teeth, less than the 3/4 of total number of teeth, and is divided into positive and negative two aspects test.
Detect with substrate combinating strength at Part II 6.6 sawtooth, with ZMC-A type diamond saw
Sheet sawtooth bond strength analyzer or performance are not less than other test instrunments of this instrument, and
Give detection method.Although device can detect bond strength；But there is detection effect
The problem that rate is low.
Summary of the invention
The present invention proposes a kind of diamond segment weld strength detector, the present invention automatically
Solve the technical problem that it is how to improve detection efficiency.
The purpose of the present invention can be realized by following technical proposal: a kind of diamond automatically
Cutter head weld strength detector, it is characterised in that this intensity detector includes frame and use
In the fixture of fixed diamond saw blade, frame is provided with the drive mechanism driving fixture to rotate；
Described frame is provided with the chuck component being clamped at diamond saw blade substrate outer edge；
This intensity detector also includes switch board based on PLC, pressure transducer and pressure head；Institute
State frame and be provided with the cylinder assembly that energy drive ram moves up and down；Pressure head and cylinder assembly
It is connected by pressure transducer；The cylinder assembly first line of a couplet is connected to electromagnetic valve；Described electromagnetic valve
All electrically connect with PLC with pressure transducer.
In above-mentioned automatic diamond segment weld strength detector, described chuck component
Including upper grip, lower chuck and the first line slideway being vertically arranged；First line slideway
Guide rail be fixed in frame, the slippery fellow of upper grip and the first line slideway is fixing to be connected,
Lower chuck is fixed in frame；Frame is provided with the first gas driving upper grip to move up and down
Cylinder.
In above-mentioned automatic diamond segment weld strength detector, described chuck component
Also including the guide plate with pilot hole, pressure head is located in pilot hole, guide plate and
The slippery fellow of one line slideway is fixing to be connected；Pressure head is fixing with guide plate to be connected.Thus, on
The upper grip stated is connected by guide plate is fixing with slippery fellow.
In above-mentioned automatic diamond segment weld strength detector, described pressure head and pressure
Force transducer is fixing to be connected, and is connected by connecting rod between pressure transducer and cylinder assembly.
In above-mentioned automatic diamond segment weld strength detector, described connecting rod sleeve
Being provided with guide pad, guide pad is fixed in frame.
In above-mentioned automatic diamond segment weld strength detector, described cylinder assembly
Including at least 2 the second cylinders, all second cylinders are arranged in series；The cylinder of the second cylinder
Body is fixed in frame, and the piston rod of upper and lower two the second cylinders can lean.
In above-mentioned automatic diamond segment weld strength detector, described second cylinder
Quantity be 2～5.
In above-mentioned automatic diamond segment weld strength detector, described second cylinder
The air inlet first line of a couplet making piston rod stretch out is connected to 1～3 air inlet pipe, in every air inlet pipe all
It is in series with electromagnetic valve, partial-air admission pipe is also in series with flow control valve.
In above-mentioned automatic diamond segment weld strength detector, all second cylinders
Piston diameter is arranged in being gradually reduced mode from bottom to top.
In order to make this automatic diamond segment weld strength detector be suitable for detection certain diameter
In the range of diamond saw blade；At above-mentioned automatic diamond segment weld strength detector
In, described frame includes fixed mount and adjustable shelf, by the between fixed mount and adjustable shelf
Two line slideway assemblies are connected；The first screw mandrel silk it is additionally provided with between fixed mount and adjustable shelf
Female driving assembly；Fixture and drive mechanism are arranged on adjustable shelf；Cylinder assembly and folder
Head assembly is arranged on fixed mount.
In above-mentioned automatic diamond segment weld strength detector, described fixture includes
Basal disc and Magnet, basal disc upper surface is circumferentially distributed several Magnet installing holes, and Magnet sets
Put in Magnet installing hole, be filled with between Magnet and Magnet installing hole sidewall magnetic shield and
Make Magnet and basal disc fix to be connected.
In above-mentioned automatic diamond segment weld strength detector, described drive mechanism
Casing including reduction box and motor, electric machine casing and reduction box is fixed on adjustable shelf,
Basal disc is fixing with the output shaft of reduction box to be connected；The rotating shaft of motor and the power shaft of reduction box
It is connected；Motor electrically connects with PLC.
In above-mentioned automatic diamond segment weld strength detector, described frame includes
Fixed mount and adjustable shelf, by the second line slideway assembly phase between fixed mount and adjustable shelf
Connect；It is additionally provided with the first screw mandrel screw between fixed mount and adjustable shelf and drives assembly；Fixture
It is arranged on fixed mount with drive mechanism；Cylinder assembly and chuck component are arranged on activity
On frame.
In above-mentioned automatic diamond segment weld strength detector, described fixture includes
Basal disc, depression bar and platen, basal disc is positioned on fixed mount by bearing, and depression bar is located in
The center of basal disc, the upper end of depression bar can be connected with platen；Bottom is arranged with spring, bullet
The upper end of spring leans with basal disc, and lower end leans with the bottom of depression bar；On fixed mount
Being fixed with can be by the discharging cylinder of depression bar upwards jack-up.
In above-mentioned automatic diamond segment weld strength detector, described drive mechanism
Including motor, electric machine casing is fixed on fixed mount, the most fixing on basal disc and machine shaft
There is belt wheel, belt wheel is arranged with transmission band；Motor electrically connects with PLC.
In above-mentioned automatic diamond segment weld strength detector, the one of described fixture
Side is provided with the laser sensor for detecting cutter head position, laser sensor and PLC Electricity Federation
Connect；By the position of laser sensor position can be adjusted between described laser sensor and frame
Put adjusting part to be connected.
In above-mentioned automatic diamond segment weld strength detector, below described pressure head
Be provided with detection pin, described frame be provided with can make detection pin and cutter head lower surface against the
Three cylinders；It is additionally provided with and detects the resistance scale that pin is mechanically connected, resistance scale in described frame
Electrically connect with PLC.
Compared with prior art, this automatic diamond segment weld strength detector has inspection
Survey efficiency is high, the advantage that accuracy of detection is high.This diamond segment weld strength detection automatically
Instrument, owing to using air cylinder driven, has the advantage that production cost is low.
Accompanying drawing explanation
Fig. 1 is the stereochemical structure signal of this automatic diamond segment weld strength detector
Figure.
Fig. 2 is the side-looking structural representation of this automatic diamond segment weld strength detector
Figure.
Fig. 3 is this automatic diamond segment weld strength detector control principle schematic diagram.
Fig. 4 is structure at this automatic diamond segment weld strength detector laser sensor
Schematic diagram.
Fig. 5 is structural representation at this automatic diamond segment weld strength detector detection pin
Figure.
Fig. 6 is the another kind of structure of this automatic diamond segment weld strength detector fixture
Schematic diagram.
In figure, 1, frame；1a, fixed mount；1b, adjustable shelf；2, fixture；2a、
Basal disc；2b, platen；2c, Magnet；2d, magnetic shield；2e, positioning convex；3, pressure
Force transducer；4, cylinder assembly；4a, the second cylinder；4b, cylinder mount frame；5、
Second line slideway assembly；6, the first screw mandrel screw drives assembly；7, shake the hand；8, unload
Material cylinder；9, motor；10, upper grip；11, lower chuck；12, the first line slideway；
13, the first cylinder；14, guide plate；15, guide pad；16, electromagnetic valve；17, stream
Adjustable valve；18, detection pin；19, the 3rd cylinder；20, resistance scale；21, laser
Sensor；22, position adjustments assembly；23, diamond saw blade；24, pressure head.
Detailed description of the invention
The following is the specific embodiment of the present invention and combine accompanying drawing, the technical side to the present invention
Case is further described, but the present invention is not limited to these embodiments.
As depicted in figs. 1 and 2, this automatic diamond segment weld strength detector includes
Frame 1, for fixed diamond saw blade 23 fixture 2, be used for driving fixture to 2 rotations
Drive mechanism, for being clamped in the chuck group at diamond saw blade 23 matrix outer edge
Part, switch board based on PLC, pressure transducer 3, pressure head 24 and for drive ram
24 cylinder assemblies 4 moved up and down.
The diamond saw blade 23 of different-diameter is detected in order to make this intensity detector be suitable for.Machine
Frame 1 includes fixed mount 1a and adjustable shelf 1b.Lead between fixed mount 1a and adjustable shelf 1b
Cross the second line slideway assembly 5 to be connected.Also set between fixed mount 1a and adjustable shelf 1b
The first screw mandrel screw is had to drive assembly 6；First screw mandrel screw drives assembly 6 to include location
Screw mandrel on fixed mount 1a, screw is fixing with adjustable shelf 1b to be connected, one end of screw mandrel
It is fixedly connected with and shakes the hand 7.Being shaken the hand by rotation 7 makes adjustable shelf 1b move horizontally.According to
Practical situation, fixture 2 and drive mechanism be arranged on fixed mount 1a, cylinder assembly 4
It is arranged on adjustable shelf 1b with chuck component；Or fixture 2 and drive mechanism are arranged at living
In moving frame 1b；Cylinder assembly 4 and chuck component are arranged on fixed mount 1a.
Specifically, fixture 2 includes basal disc 2a, depression bar and platen 2b, and basal disc 2a leads to
Crossing bearing to be positioned on fixed mount 1a, depression bar is located in the center of basal disc 2a, depression bar
Upper end can be connected with platen 2b；Bottom is arranged with spring, the upper end of spring and basal disc
2a leans, and lower end leans with the bottom of depression bar；It is fixed with energy on fixed mount 1a
Discharging cylinder 8 by depression bar upwards jack-up.During clamping diamond saw blade 23, discharging cylinder
Depression bar is upwards pushed up by 8, takes off platen 2b, is loaded on platen after loading onto diamond saw blade 23
2b makes platen 2b be connected with depression bar, the piston rod retraction of last discharging cylinder 8, depression bar
Pull down under the action of the spring, make diamond saw blade 23 be clipped in basal disc 2a firmly
And between platen 2b.
Drive mechanism includes that motor 9, motor 9 housing are fixed on fixed mount 1a, basal disc
It is respectively and fixedly provided with belt wheel on 2a and motor 9 rotating shaft, belt wheel is arranged with transmission band；Motor 9
Electrically connect with PLC.After detection completes a cutter head, PLC controls motor 9 rotating shaft rotation
Turning set angle, motor 9 rotating shaft is by belt wheel and belt drive basal disc 2a and diamond saw
Sheet 23 rotates, and makes next cutter head be positioned at immediately below pressure head 24.
Chuck component includes upper grip 10, lower chuck 11 and the first straight line being vertically arranged
Guide rail 12.Specifically, the guide rail of the first line slideway 12 is fixed on the work of frame 1
In moving frame 1b；Upper grip 10 is fixing with the slippery fellow of the first line slideway 12 to be connected, lower folder
11 are fixed in frame 1；Frame 1 is provided with and drives upper grip 10 to move up and down
First cylinder 13.The cylinder body of the first cylinder 13 is fixed on adjustable shelf 1b, piston rod with
Foxy fixing connection；The piston rod of the first cylinder 13 is flexible realize upper grip 10 near or
Away from lower chuck 11, i.e. clamp or unclamp diamond saw blade 23.Clamped by chuck component
At diamond saw blade 23 matrix outer edge, it is to avoid cause diamond saw blade during punching press cutter head
23 matrix deformation are excessive and cause detection inaccurate.
In order to improve the stability of foxy elevating movement, chuck component also includes having guiding
The guide plate 14 in hole, pressure head 24 is located in pilot hole, guide plate 14 and the first straight line
The slippery fellow of guide rail 12 is fixing to be connected；Pressure head 24 is fixing with guide plate 14 to be connected.Thus,
Above-mentioned upper grip 10 is connected by guide plate 14 is fixing with slippery fellow.
The piston rod of cylinder assembly 4 is vertically movable；Pressure head 24 and cylinder assembly 4 are by pressure
Force transducer 3 is connected.Specifically, pressure head 24 is fixing with pressure transducer 3 to be connected,
It is connected by connecting rod between pressure transducer 3 and cylinder assembly 4.In order to improve connecting rod
Kinetic stability and the stability of raising power transmission, connecting rod sleeve is provided with guide pad 15, leads
It is fixed on the adjustable shelf 1b of frame 1 to block 15.
Cylinder assembly 4 includes at least 2 the second cylinder 4a, all second cylinder 4a strings
Connection is arranged.Nethermost cylinder block is fixed in frame 1, and piston rod is connected with connecting rod
Connect.Being fixed with cylinder mount frame 4b in frame 1, the cylinder body of other cylinders is all by above-mentioned
Cylinder mount frame 4b be fixed in frame 1, the piston of upper and lower two the second cylinder 4a
Bar can lean；The piston rod i.e. going up a second cylinder 4a stretches out rear with next second
The piston rod of cylinder 4a leans, and forms the superposition of power；Make pressure head 24 that cutter head to be produced
Bigger pressure.
As shown in Figure 1 to Figure 3, in order to be able to produce bigger active force and by combination
Produce the active force of the different numerical value of many groups, then the quantity preferably 2～5 of the second cylinder 4a
Individual.All second cylinder 4a piston diameters are arranged in being gradually reduced mode from bottom to top.?
Under same pressure and airflow function, the piston diameter of cylinder is the biggest, and the active force of generation is more
Greatly, but feed speed is slower；The piston diameter of cylinder is the least, and the active force of generation is the least,
But feed speed is very fast.The air inlet first line of a couplet making piston rod stretch out at the second cylinder 4a is connected to
1～3 air inlet pipe, every air inlet pipe is all in series with electromagnetic valve 16, on partial-air admission pipe
Also it is in series with flow control valve 17；Gas flow is reduced by regulation flow control valve 17,
And then reduce the feed speed of the less cylinder of piston diameter；It is finally reached pressure head 24 in difference
Active force promotes lower speed essentially identical.Fig. 3 is to illustrate with two cylinders, each second
The cylinder 4a air inlet first line of a couplet is connected to 3 air inlet pipe, two air inlet pipe is in series with flow and adjusts
Joint valve 17.
Electromagnetic valve 16 and pressure transducer 3 all electrically connect with PLC.Control based on PLC
Arranging applying pressure in cabinet, PLC selects suitable electromagnetic valve according to arranging applying force value
16, make the pressure that cylinder assembly 4 can produce slightly larger than arranging applying force value.Air cylinder group
During part 4 promotes 24 times pressures of pressure head, pressure transducer 3 sensed pressure, when detecting
Real-time pressure equal to or more than when arranging applying force value, PLC controls corresponding electromagnetism
Valve 16 makes the second cylinder 4a piston rod retraction in cylinder assembly 4；Thus complete one
The detection of cutter head.And then, PLC controls motor 9 rotating shaft rotation set angle, motor 9
Rotating shaft is rotated by belt wheel and belt drive basal disc 2a and diamond saw blade 23, makes next
Individual cutter head is positioned at immediately below pressure head 24.
This automatic diamond segment weld strength detector detected a cutter head shape at 0.5 second
During state, the real time data that pressure transducer 3 sense detection obtains is more than arranging applying force value
Just the second cylinder 4a piston rod retraction can be made within 10%.This diamond segment welding automatically
Intensity detector is when one cutter head state of detection in 1 second, and pressure transducer 3 sense detects
To real time data more than arrange applying force value 3% within just can make second cylinder 4a live
Stopper rod bounces back.Thus there is the advantage that accuracy of detection is high.
As it is shown in figure 5, be provided with detection pin 18 below pressure head 24, frame 1 is provided with energy
Make detection pin 18 and cutter head lower surface against the 3rd cylinder 19；It is additionally provided with in frame 1
The resistance scale 20 being mechanically connected with detection pin 18, resistance scale 20 electrically connects with PLC.Folder
After head assembly clamps diamond saw blade 23 matrix, the 3rd cylinder 19 drives detection pin 18
Move upward, make detection pin 18 and cutter head lower surface against；24 times pressures of pressure head make cutter head
Deform upon, and then promote detection pin 18 to move downward, thus drive resistance scale 20
Detection bar slides, i.e. this deformation quantity is measured, in control based on PLC by resistance scale 20
Arranging deformation quantity in cabinet processed, this numerical value can be used to ensure that the safety of detection cutter head；Also may be used
Whether met the requirements by deformation quantity detection cutter head weld strength.
As shown in Figure 4, in order to be able to make cutter head the most relative with pressure head 24, the one of fixture 2
Side is provided with the laser sensor 21 for detecting cutter head position, laser sensor 21 and PLC
Electrically connect；By laser sensor 21 can be adjusted between laser sensor 21 and frame 1
The position adjustments assembly 22 of position is connected.Position adjustments assembly 22 is cylinder or screw mandrel
Screw assembly and cylinder.
Embodiment two
The present embodiment is essentially identical with structure and the principle of embodiment one, different place
Being: as shown in Figure 6, fixture 2 includes basal disc 2a and Magnet 2c, basal disc 2a center
Place has and diamond saw blade 23 centre bore positioning convex 2e adaptably.On basal disc 2a
Surface is circumferentially distributed several Magnet 2c installing hole, and Magnet 2c is arranged on Magnet 2c
In installing hole, between Magnet 2c and Magnet 2c installing hole sidewall, it is filled with magnetic shield 2d
And make that Magnet 2c and basal disc 2a is fixing to be connected.Drive mechanism includes reduction box and motor 9,
The casing of motor 9 housing and reduction box is fixed on adjustable shelf 1b, basal disc 2a and deceleration
The output shaft of case is fixing to be connected；The rotating shaft of motor 9 is connected with the power shaft of reduction box；
Motor 9 electrically connects with PLC.
Claims (6)
1. an automatic diamond segment weld strength detector, it is characterised in that this is strong
Degree detector includes frame (1) and the fixture (2) for fixed diamond saw blade (23),
Frame (1) is provided with and drives fixture to the drive mechanism that (2) rotate；Described frame (1)
It is provided with the chuck component being clamped at diamond saw blade (23) matrix outer edge；This
Intensity detector also includes switch board based on PLC, pressure transducer (3) and pressure head
(24)；Described frame (1) is provided with the cylinder that energy drive ram (24) moves up and down
Assembly (4)；Pressure head (24) and cylinder assembly (4) are by pressure transducer (3) phase
Connect；Cylinder assembly (4) first line of a couplet is connected to electromagnetic valve (16)；Described electromagnetic valve (16)
All electrically connect with PLC with pressure transducer (3)；Described chuck component includes upper grip
(10), lower chuck (11) and the first line slideway (12) of being vertically arranged；First is straight
The guide rail of line guide rail (12) is fixed in frame (1), and upper grip (10) is straight with first
The slippery fellow of line guide rail (12) is fixing to be connected, and lower chuck (11) is fixed in frame (1)；
Frame (1) is provided with the first cylinder (13) driving upper grip (10) to move up and down.
Automatic diamond segment weld strength detector the most according to claim 1,
It is characterized in that, described chuck component also includes the guide plate (14) with pilot hole, pressure
Head (24) is located in pilot hole, guide plate (14) and the first line slideway (12)
Slippery fellow fixing connect；Pressure head (24) is fixing with guide plate (14) to be connected.
Automatic diamond segment weld strength the most according to claim 1 and 2 detects
Instrument, it is characterised in that described frame (1) includes fixed mount (1a) and adjustable shelf (1b),
By the second line slideway assembly (5) phase between fixed mount (1a) and adjustable shelf (1b)
Connect；It is additionally provided with the first screw mandrel screw between fixed mount (1a) and adjustable shelf (1b) to drive
Dynamic assembly (6)；Fixture (2) and drive mechanism are arranged on adjustable shelf (1b)；Gas
Cylinder component (4) and chuck component are arranged on fixed mount (1a).
Automatic diamond segment weld strength the most according to claim 1 and 2 detects
Instrument, it is characterised in that frame (1) includes fixed mount (1a) and adjustable shelf (1b),
By the second line slideway assembly (5) phase between fixed mount (1a) and adjustable shelf (1b)
Connect；It is additionally provided with the first screw mandrel screw between fixed mount (1a) and adjustable shelf (1b) to drive
Dynamic assembly (6)；Fixture (2) and drive mechanism are arranged on fixed mount (1a)；Gas
Cylinder component (4) and chuck component are arranged on adjustable shelf (1b).
Automatic diamond segment weld strength the most according to claim 1 and 2 detects
Instrument, it is characterised in that the side of described fixture (2) is provided with for detecting cutter head position
Laser sensor (21), laser sensor (21) electrically connects with PLC；Described laser
By laser sensor (21) position can be adjusted between sensor (21) and frame (1)
Position adjustments assembly (22) is connected.
Automatic diamond segment weld strength the most according to claim 1 and 2 detects
Instrument, it is characterised in that described pressure head (24) lower section is provided with detection pin (18), described machine
Frame (1) be provided with can make detection pin (18) and cutter head lower surface against the 3rd cylinder (19)；
It is additionally provided with and detects the resistance scale (20) that pin (18) is mechanically connected in described frame (1),
Resistance scale (20) electrically connects with PLC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310296045.3A CN103383324B (en) | 2013-07-02 | 2013-07-02 | Automatically diamond segment weld strength detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310296045.3A CN103383324B (en) | 2013-07-02 | 2013-07-02 | Automatically diamond segment weld strength detector |
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| CN103383324A CN103383324A (en) | 2013-11-06 |
| CN103383324B true CN103383324B (en) | 2016-08-17 |
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| CN105021463B (en) * | 2014-04-28 | 2018-02-23 | 深圳市金洲精工科技股份有限公司 | A kind of weld strength testing agency |
| CN104568742A (en) * | 2015-01-12 | 2015-04-29 | 佛山市南海日东工具制造有限公司 | Welding strength detector |
| CN104568470B (en) * | 2015-01-22 | 2017-03-08 | 杭州沃镭智能科技股份有限公司 | A kind of stress test mechanism of vacuum booster assembly performance on-line measuring device |
| CN104759795B (en) * | 2015-04-03 | 2016-03-23 | 项俊俊 | The control strategy of diamond segment conveying device and diamond segment conveying device |
| CN107044938A (en) * | 2016-02-05 | 2017-08-15 | 襄阳东昇机械有限公司 | A kind of nut-welding intensity pressure testing machine |
| CN105928806B (en) * | 2016-04-25 | 2018-06-15 | 淄博市新材料研究所 | A kind of metal welding position reliability detecting device and its application method |
| CN108760493A (en) * | 2018-05-18 | 2018-11-06 | 丹阳市宝利锯业机械有限公司 | A kind of sawtooth weld strength detector |
| CN108693024B (en) * | 2018-05-21 | 2020-09-18 | 项大清 | Diamond saw blade parameter detection device |
| CN108917682B (en) * | 2018-05-21 | 2020-08-04 | 项大清 | Diamond saw blade parameter detection device |
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| CN103383324A (en) | 2013-11-06 |
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