CN107490523A - Full-automatic cutting tool cutting efficiency test machine - Google Patents
Full-automatic cutting tool cutting efficiency test machine Download PDFInfo
- Publication number
- CN107490523A CN107490523A CN201710645307.0A CN201710645307A CN107490523A CN 107490523 A CN107490523 A CN 107490523A CN 201710645307 A CN201710645307 A CN 201710645307A CN 107490523 A CN107490523 A CN 107490523A
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- China
- Prior art keywords
- clamping jaw
- cutting tool
- full
- test machine
- efficiency test
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/58—Investigating machinability by cutting tools; Investigating the cutting ability of tools
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/005—Electromagnetic means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0688—Time or frequency
Abstract
The invention provides a kind of full-automatic cutting tool cutting efficiency test machine, belong to mechanical equipment technical field.It solves in the prior art that electrician tool test pulling force is non-constant, obtains the technical problems such as data reliability is low.It includes frame, frame side is provided with timekeeping system, constant force block is provided with described timekeeping system, described constant force block can vertically move up and down in timekeeping system, the transmission component described in transmission component is provided with the constant force block is connected on cutting tool upper spider to be measured and be additionally provided with sample feed mechanism.The present invention is driven using constant force block to electric tool, ensures that test force is constant, avoids test force excessive or too small influence the data obtained is bigger than normal or less than normal.
Description
Technical field
The invention belongs to mechanical equipment technical field, is related to and takes a kind of full-automatic cutting tool cutting efficiency test machine.
Background technology
It is convenient that electric tool brings for daily life, while also substantially increases production efficiency.Usual electric tool is divided into
Electric drill, electric wheel, electric wrench, electric percussion drill and electric cutting tool, wherein electric cutting tool are in daily life
Conventional electric tool, especially electric circular saw.Electric circular saw is a kind of using motor as power, then passes through and is driven driving saw blade
The electric tool cut.Electric tool has the characteristics of safe and reliable, operating efficiency is high, and wherein operating efficiency is measurement one
Platform electric circular saw, and the standard that electric tool is good and bad.Generally, the operating efficiency that in the market describes an electric circular saw is often electricity circle
The rated power of saw, the service behaviour of electric circular saw is expressed with the size of rated power.Also this is come from, this electric circular saw performance effect
The expression way of rate is simultaneously not directly perceived bright and clear enough.
According to the distance of electric tool cutting sample in the unit interval as the cutting efficiency for weighing electric cutting tool, tool
There is the characteristics of directly perceived, clear, in fixed distance, apply with constant pulling force, driving electric tool cutting sample, be measured
The time of cutting, calculate the cutting efficiency of the cutting distance, i.e. electrician's cutting tool in the electric cutting tool unit interval.It is logical
Often test is artificial means, i.e., manually applies thrust to electric cutting tool to be measured, when manually pinching meter, substantially calculates electronic work
The cutting efficiency of tool, but because force person's force error is not easy control, and human error, measured cutting efficiency be present in timing
It is with a low credibility.
The content of the invention
The purpose of the present invention is regarding to the issue above and defect, there is provided one kind presses full-automatic cutting tool cutting efficiency test
Machine.Solve in the prior art, test force is non-constant, the true technological deficiency of timing uncertainty.
To reach above-mentioned purpose, present invention employs following technical proposal：
A kind of full-automatic cutting tool cutting efficiency test machine, including frame, it is characterised in that described frame side is set
Timekeeping system is equipped with, constant force block is provided with described timekeeping system, described constant force block can be in timekeeping system along vertical side
To moving up and down, being provided with the transmission component described in transmission component on the constant force block is connected on cutting tool to be measured.
In above-mentioned full-automatic cutting tool cutting efficiency test machine, timekeeping system includes installing plate, described installation
The shield of tubular is installed with plate, the shield axis is set respectively perpendicular to horizontal plane, the upper and lower ends of described shield
It is equipped with first sensor and second sensor.
In above-mentioned full-automatic cutting tool cutting efficiency test machine, first sensor is fixedly connected on the side of shield
Wall, described second sensor are detachably connected on shield, and can change installation site on shield axis direction.
In above-mentioned full-automatic cutting tool cutting efficiency test machine, first sensor is fixedly mounted on first support
On, described first support is fixedly mounted on shield, and described second sensor is connected with second support, described second
Frame is fixedly mounted on shield, and regulating tank is offered in described second support, and described second sensor can be in regulating tank
Slide, and be detachably connected in regulating tank.
In above-mentioned full-automatic cutting tool cutting efficiency test machine, transmission component includes transmission steel wire, described biography
Dynamic steel wire one end is fixedly connected on constant force block, and the described transmission steel wire other end is detachably connected to cutting tool to be measured
On.
In above-mentioned full-automatic cutting tool cutting efficiency test machine, transmission component also includes angle pulley, described
Angle pulley is provided with pulley groove, and described transmission steel wire is fastened in pulley groove, and angle pulley is fixed by pulley bracket pacifies
Dress is on a mounting board.
In above-mentioned full-automatic cutting tool cutting efficiency test machine, pulley bracket includes fixed plate, described fixation
Two pieces of limiting plates are symmetrically arranged with below plate, isometry block is provided between described limiting plate, is set below described isometry block
There are two pieces of fixture blocks, be wire groove between described fixture block, adjusting rod is equipped with described fixture block.
In above-mentioned full-automatic cutting tool cutting efficiency test machine, sample feed mechanism, institute are additionally provided with frame
The sample feed mechanism stated includes the first clamping jaw and the second clamping jaw, and the first described clamping jaw and the second clamping jaw are set up in parallel, and point
Vertical driver is not provided with the first clamping jaw and the second clamping jaw, the of vertical level is provided with the first described clamping jaw
One guide rod, the second guide rod of vertical level is provided with the second described clamping jaw.
In above-mentioned full-automatic cutting tool cutting efficiency test machine, the first guide rod is located on the first guide plate, institute
The second guide rod stated is located on the second guide plate, and the first described guide plate is fixedly mounted in frame, and described second leads
It is slidably connected to plate in frame, the second described guide plate is arranged with two pieces of runner blocks, and described runner block is led with second
To slide rail is provided between plate, described runner block is connected on slide rail, and horizontal drive is also associated with the second described guide plate
Dynamic device.
In above-mentioned full-automatic cutting tool cutting efficiency test machine, the first clamping jaw and the second clamping jaw are in box shape, institute
The frame upper surface stated is provided with roller component, and the first described clamping jaw and the second clamping jaw are set on roller component.
The advantage of the invention is that：
1. being driven to electric tool using constant force block, ensure that test force is constant, avoid test force excessive or too small shadow
It is bigger than normal or less than normal to ring the data obtained.
2. pass twice through time point using sensor test constant block, the difference at time point is calculated as the testing time, accurately
Effectively.
3. using test sample feed mechanism, increase automation degree of equipment, reduction is worked, and reduces work degree.
Further advantage, target and the feature of the present invention embodies part by following explanation, and part will also be by this
The research and practice of invention and be understood by the person skilled in the art.
Brief description of the drawings
Fig. 1 structural representations proposed by the present invention；
The schematic diagram that spring abutment splits structure is buffered in Fig. 2 present invention；
Fig. 3 is the structural representation of timekeeping system provided by the invention；
Fig. 4 is the structural representation of sample feed mechanism provided by the invention.
In figure, frame 1, timekeeping system 2, installing plate 21, shield 22, first sensor 23, first support 231, second pass
Sensor 24, second support 241, regulating tank 242, constant force block 3, transmission component 4, transmission steel wire 41, angle pulley 42, pulley bracket
43rd, fixed plate 431, limiting plate 432, isometry block 433, fixture block 434, adjusting rod 435, sample feed mechanism 5, vertical driver
51st, the first clamping jaw 6, the first guide rod 61, the first guide plate 62, horizontal driver 63, the second clamping jaw 7, the second guide rod 71, second are led
To plate 72, runner block 73, slide rail 74, roller component 8, cutting tool a to be measured.
Embodiment
If Fig. 1,2 are depending on having gone out one embodiment of the present of invention, full-automatic cutting tool cutting efficiency survey of the present invention
Test-run a machine, including frame 1, it is characterised in that the described side of frame 1 is provided with timekeeping system 2, is set in described timekeeping system 2
Constant force block 3 is equipped with, described constant force block 3 can vertically move up and down in timekeeping system 2, be set on the constant force block 3
There is transmission component 4.Described transmission component 4 is connected on cutting tool a to be measured.
It is only gravity in the extraneous application of constant force block 3, constant force block 3 is connected to cutting tool a to be measured by transmission component 4
On, according to the effect transitivity of power, cutting tool a to be measured is only by the gravity of constant force block 3, and the gravity can be considered constant.
Wherein, the frictional force in transmission component 4 is also considered as invariable.
Under the constant pulling force effect of constant force block 3, driving moves along a straight line and test sample is carried out cutting tool a to be measured
Cut, in cutting process, cutting tool a move distances to be measured are the move distance of constant force block 3, while constant force block 3 is by timing system
System 2, the timing decorum 2 records the run duration of constant force block 3.According to the move distance and run duration of constant force block 3, calculate to be measured
Move distances of the cutting tool a in the unit interval in normal work, i.e., cutting tool a to be measured is under a certain test force to certain
The operating efficiency of kind test sample.
In this technical scheme, specifically, timekeeping system 2 includes installing plate 21, peace is fixed on described installing plate 21
Shield 22 equipped with tubular, the axis of shield 22 are respectively arranged with perpendicular to horizontal plane, the upper and lower ends of described shield 22
First sensor 23 and second sensor 24.
First sensor 23 is arranged on the initial position of constant force block 3, when constant force block drives cutting tool a cuttings to be measured,
Constant force block 3 moves from first sensor 23, and first sensor 23 sends a timing signal, when constant force block 3 moves to second
When in the range of sensor 24, second sensor 24 sends the signal of a stopping timing, and timing is completed.Meanwhile first senses
The distance that the distance between device 23 and second sensor 24 are passed by for constant force block 3, and the distance that cutting tool a to be measured passes by.
In the present invention, it is preferred to first sensor 23 is fixedly connected on the side wall of shield 22, described second sensor
24 are detachably connected on shield 22, and can change installation site on shield axis direction.Adjust second sensor 24
Position, to change the move distance of constant force block 3, that is, set cutting tool a to be measured measuring distance.
Preferably, first sensor 23 is fixedly mounted in first support 231, and described first support 231 is fixedly mounted
On shield 22, described second sensor 24 is connected with second support 241, and described second support 241 is fixedly mounted on shield
On cover 22, regulating tank 242 is offered in described second support 241, described second sensor 24 can be slided in regulating tank 242
It is dynamic, and be detachably connected in regulating tank 242.Convenient adjustment second sensor 24 and the distance of first sensor 23, keep
Precision.
In the present invention, as shown in figure 3, transmission component 4 includes transmission steel wire 41, described one end of transmission steel wire 41 is fixed
It is connected on constant force block 3, the described other end of transmission steel wire 41 is detachably connected on cutting tool a to be measured.
Transmission component 4 also includes angle pulley 42, and described angle pulley 42 is provided with pulley groove, described transmission steel wire
41 are fastened in pulley groove, and angle pulley 42 is fixedly mounted on installing plate 21 by pulley bracket 43.By being driven steel wire 41
Connection, resistance to sliding is small, ensures gravity suffered by constant force block 3, the test force to level off to suffered by cutting tool a to be measured, while also keep away
It is constant to exempt from external force participation disturbed test power.
Preferably, pulley bracket 43 includes fixed plate 431, the described lower section of fixed plate 431 be symmetrically arranged with two pieces it is spacing
Plate 432, isometry block 433 is provided between described limiting plate 432, and the described lower section of isometry block 433 is provided with two pieces of fixture blocks
434, it is wire groove between described fixture block 434, adjusting rod 435 is equipped with described fixture block 434.Prevent be driven steel wire 41 with
The fixed components such as frame 1 rub, and destroy the constancy for the test force that constant force block 3 is applied.
In the present invention, sample feed mechanism 5 is additionally provided with frame 1, described sample feed mechanism 5 includes the first folder
The clamping jaw 7 of pawl 6 and second, the first described clamping jaw 6 and the second clamping jaw 7 are set up in parallel, and respectively in the first clamping jaw 6 and the second folder
Vertical driver 51 is provided with pawl 7, the first guide rod 61 of vertical level is provided with the first described clamping jaw 6, it is described
The second guide rod 71 of vertical level is provided with second clamping jaw 7.
First clamping jaw 6 and the second clamping jaw 7 independently control, and two linear actuators 51 control the He of the first clamping jaw 6 respectively
Second clamping jaw 7 does vertical motion, and in cutting test process is carried out, the first clamping jaw 6 and the second clamping jaw 7 move downward, and vertically
Drive mechanism 51 is kept down state, and test sample is fastened in frame by the first clamping jaw 6 and the second clamping jaw 7.
Preferably, the first guide rod 61 is located on the first guide plate 62, and the second described guide rod 71 is located in the second guiding
On plate 72, the first described guide plate 62 is fixedly mounted in frame 1, and the second described guide plate 72 is slidably connected at frame 1
On, the second described guide plate 72 is arranged with two pieces of runner blocks 73, is set between the described guide plate 72 of runner block 73 and second
Slide rail 74 is equipped with, described runner block 73 is connected on slide rail 74, and horizontal drive is also associated with the second described guide plate 72
Device 65.
After the completion of test, vertical driver 51 drives the first clamping jaw 6 to lift, and the second clamping jaw 7 keeps down and is resisted against
On test sample, horizontal driver 65 drives direction of second guide plate 72 along slide rail 74 to the first clamping jaw 6 to move, and is moved to and sets
Positioning postpones vertical driver 51 and drives the first clamping jaw 6 to move downward, after clamping test sample, the vertical driving of driver 51 the
Two clamping jaws 7 are raised above, and and then horizontal driver 65 drives the second guide plate 72 to drive the second clamping jaw 7 to away from the first clamping jaw
6 direction movement, then directly driver 51 drives the second clamping jaw 7 to move downward, and clamps test sample.
Preferably, the first clamping jaw 6 and the second clamping jaw 7 are in box shape, and test sample frame is entered into the first clamping jaw 6 and the second clamping jaw
In 7, test sample position is limited, ensures that test sample is not subjected to displacement slip in test process, influences test result.Described
The upper surface of frame 1 is provided with roller component 8, and the first described clamping jaw 6 and the second clamping jaw 7 are set on roller component 8.Be advantageous to
It is convenient that test sample transports, and reduces frictional resistance.
The operation principle of the present invention：
It is only gravity in the extraneous application of constant force block 3, constant force block 3 is connected to cutting tool a to be measured by transmission component 4
On, according to the effect transitivity of power, cutting tool a to be measured is only by the gravity of constant force block 3, and the gravity can be considered constant.
Wherein, the frictional force in transmission component 4 is also considered as invariable.
Under the constant pulling force effect of constant force block 3, driving moves along a straight line and test sample is carried out cutting tool a to be measured
Cut, in cutting process, cutting tool a move distances to be measured are the move distance of constant force block 3, while constant force block 3 is by timing system
System 2, the timing decorum 2 records the run duration of constant force block 3.According to the move distance and run duration of constant force block 3, calculate to be measured
Move distances of the cutting tool a in the unit interval in normal work, i.e., cutting tool a to be measured is under a certain test force to certain
The operating efficiency of kind test sample.
First sensor 23 is arranged on the initial position of constant force block 3, when constant force block drives cutting tool a cuttings to be measured,
Constant force block 3 moves from first sensor 23, and first sensor 23 sends a timing signal, when constant force block 3 moves to second
When in the range of sensor 24, second sensor 24 sends the signal of a stopping timing, and timing is completed.Meanwhile first senses
The distance that the distance between device 23 and second sensor 24 are passed by for constant force block 3, and the distance that cutting tool a to be measured passes by.
First clamping jaw 6 and the second clamping jaw 7 independently control, and two linear actuators 51 control the He of the first clamping jaw 6 respectively
Second clamping jaw 7 does vertical motion, and in cutting test process is carried out, the first clamping jaw 6 and the second clamping jaw 7 move downward, and vertically
Drive mechanism 51 is kept down state, and test sample is fastened in frame by the first clamping jaw 6 and the second clamping jaw 7.
After the completion of test, vertical driver 51 drives the first clamping jaw 6 to lift, and the second clamping jaw 7 keeps down and is resisted against
On test sample, horizontal driver 65 drives direction of second guide plate 72 along slide rail 74 to the first clamping jaw 6 to move, and is moved to and sets
Positioning postpones vertical driver 51 and drives the first clamping jaw 6 to move downward, after clamping test sample, the vertical driving of driver 51 the
Two clamping jaws 7 are raised above, and and then horizontal driver 65 drives the second guide plate 72 to drive the second clamping jaw 7 to away from the first clamping jaw
6 direction movement, then directly driver 51 drives the second clamping jaw 7 to move downward, and clamps test sample, enters second of survey
Examination.
Specific embodiment described herein is only to spirit explanation for example of the invention.Technology belonging to the present invention is led
The technical staff in domain can be made various modifications or supplement to described specific embodiment or be replaced using similar mode
Generation, but without departing from the spiritual of the present invention or surmount scope defined in appended claims.
Although herein more using frame 1, timekeeping system 2, installing plate 21, shield 22, first sensor 23, first
Support 231, second sensor 24, second support 241, regulating tank 242, constant force block 3, transmission component 4, transmission steel wire 41, deflecting
Pulley 42, pulley bracket 43, fixed plate 431, limiting plate 432, isometry block 433, fixture block 434, adjusting rod 435, sample feeding machine
Structure 5, vertical driver 51, the first clamping jaw 6, the first guide rod 61, the first guide plate 62, horizontal driver 63, the second clamping jaw 7,
The terms such as two guide rods 71, the second guide plate 72, runner block 73, slide rail 74, roller component 8, cutting tool a to be measured, but do not arrange
Except the possibility using other terms.It is used for the purpose of more easily describing and explaining the essence of the present invention using these terms；
Any additional limitation is construed as all to disagree with spirit of the present invention.
Claims (10)
1. a kind of full-automatic cutting tool cutting efficiency test machine, including frame (1), it is characterised in that described frame (1) one
Side is provided with timekeeping system (2), and constant force block (3) is provided with described timekeeping system (2), and described constant force block (3) can counted
When system (2) in vertically move up and down, be provided with transmission component (4), described transmission component on the constant force block (3)
(4) it is connected on cutting tool (a) to be measured.
2. full-automatic cutting tool cutting efficiency test machine according to claim 1, it is characterised in that described timing system
System (2) includes installing plate (21), and the shield (22) of tubular, shield (22) axle are installed with described installing plate (21)
Line is respectively arranged with first sensor (23) and second sensor perpendicular to horizontal plane, the upper and lower ends of described shield (22)
(24)。
3. full-automatic cutting tool cutting efficiency test machine according to claim 2, it is characterised in that described first passes
Sensor (23) is fixedly connected on the side wall of shield (22), and described second sensor (24) is detachably connected to shield (22)
On, and installation site can be changed on shield axis direction.
4. full-automatic cutting tool cutting efficiency test machine according to claim 3, it is characterised in that described first passes
Sensor (23) is fixedly mounted in first support (231), and described first support (231) is fixedly mounted on shield (22), institute
The second sensor (24) stated is connected with second support (241), and described second support (241) is fixedly mounted on shield (22)
On, regulating tank (242) is offered in described second support (241), described second sensor (24) can be in regulating tank (242)
Middle slip, and be detachably connected in regulating tank (242).
5. full-automatic cutting tool cutting efficiency test machine according to claim 1, it is characterised in that described transmission group
Part (4) includes transmission steel wire (41), and described transmission steel wire (41) one end is fixedly connected on constant force block (3), described transmission
Steel wire (41) other end is detachably connected on cutting tool (a) to be measured.
6. full-automatic cutting tool cutting efficiency test machine according to claim 5, it is characterised in that described transmission group
Part (4) also includes angle pulley (42), and described angle pulley (42) is provided with pulley groove, and described transmission steel wire (41) card is set
In pulley groove, angle pulley (42) is fixedly mounted on installing plate (21) by pulley bracket (43).
7. full-automatic cutting tool cutting efficiency test machine according to claim 6, it is characterised in that described pulley branch
Frame (43) includes fixed plate (431), and two pieces of limiting plates (432), described limit are symmetrically arranged with below described fixed plate (431)
Isometry block (433) is provided between position plate (432), two pieces of fixture blocks (434) are provided with below described isometry block (433), it is described
Fixture block (434) between be wire groove, be equipped with adjusting rod (435) on described fixture block (434).
8. full-automatic cutting tool cutting efficiency test machine according to claim 1, it is characterised in that described frame
(1) sample feed mechanism (5) is additionally provided with, described sample feed mechanism (5) includes the first clamping jaw (6) and the second clamping jaw
(7), described the first clamping jaw (6) and the second clamping jaw (7) are set up in parallel, and respectively on the first clamping jaw (6) and the second clamping jaw (7)
Vertical driver (51) is provided with, the first guide rod (61) of vertical level is provided with described the first clamping jaw (6), it is described
The second guide rod (71) of vertical level is provided with second clamping jaw (7).
9. full-automatic cutting tool cutting efficiency test machine according to claim 8, it is characterised in that described first is led
Bar (61) is located on the first guide plate (62), and described the second guide rod (71) is located on the second guide plate (72), described
First guide plate (62) is fixedly mounted in frame (1), and described the second guide plate (72) is slidably connected in frame (1), institute
The second guide plate (72) stated is arranged with two pieces of runner blocks (73), between described runner block (73) and the second guide plate (72)
Slide rail (74) is provided with, described runner block (73) is connected on slide rail (74), is also connected with described the second guide plate (72)
There is horizontal driver (63).
10. full-automatic cutting tool cutting efficiency test machine according to claim 1, it is characterised in that described first
Clamping jaw (6) and the second clamping jaw (7) are in box shape, and described frame (1) upper surface is provided with roller component (8), and described first
Clamping jaw (6) and the second clamping jaw (7) are set on roller component (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710645307.0A CN107490523B (en) | 2017-08-01 | 2017-08-01 | Full-automatic cutting tool cutting efficiency test machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710645307.0A CN107490523B (en) | 2017-08-01 | 2017-08-01 | Full-automatic cutting tool cutting efficiency test machine |
Publications (2)
| Publication Number | Publication Date |
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| CN107490523A true CN107490523A (en) | 2017-12-19 |
| CN107490523B CN107490523B (en) | 2020-05-19 |
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ID=60644811
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710645307.0A Active CN107490523B (en) | 2017-08-01 | 2017-08-01 | Full-automatic cutting tool cutting efficiency test machine |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110006772A (en) * | 2019-04-17 | 2019-07-12 | 永康市磨鹰磨具有限公司 | Automate grinding wheel performance detection apparatus |
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| CN105758631A (en) * | 2016-04-29 | 2016-07-13 | 成都惠锋金刚石工具有限公司 | Method for testing cutting performance of diamond saw blade |
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| US5191700A (en) * | 1990-12-12 | 1993-03-09 | General Electric Company | Method for making packets of amorphous metal strip for transformer-core manufacture |
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| CN110006772A (en) * | 2019-04-17 | 2019-07-12 | 永康市磨鹰磨具有限公司 | Automate grinding wheel performance detection apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107490523B (en) | 2020-05-19 |
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