CN109514348A - Metal circular saw bench monodentate, multiple tooth sawing force test device - Google Patents
Metal circular saw bench monodentate, multiple tooth sawing force test device Download PDFInfo
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- CN109514348A CN109514348A CN201811303187.7A CN201811303187A CN109514348A CN 109514348 A CN109514348 A CN 109514348A CN 201811303187 A CN201811303187 A CN 201811303187A CN 109514348 A CN109514348 A CN 109514348A
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- Prior art keywords
- circular saw
- multiple tooth
- metal works
- monodentate
- saw blade
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- Legal status (The legal status 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 status listed.)
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- 239000002184 metal Substances 0.000 title claims abstract description 90
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 90
- 238000012360 testing method Methods 0.000 title claims abstract description 23
- 230000003595 spectral effect Effects 0.000 claims abstract description 6
- 230000003321 amplification Effects 0.000 claims description 3
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 3
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims 1
- 239000007787 solid Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 12
- 238000005520 cutting process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007514 turning Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
- B23Q17/09—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
- B23Q17/09—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool
- B23Q17/0952—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool during machining
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sawing (AREA)
Abstract
The invention discloses a kind of metal circular saw bench monodentates, multiple tooth sawing force test device, including metal circular saw bench, stepped metal works, pressure sensor module, amplifier, data acquisition module and mobile workstation；The metal circular saw bench includes reduction gearbox, mobile work platform, saw blade, firm banking and work piece holder, the step type metal works include height successively raised multiple steps from left to right, the saw blade is the saw blade of multiple tooth saw, and the height of each step of the step type metal works is just met for the sawing thickness of multiple and different rack saws of saw blade；The pressure sensor module is mounted on work piece holder by bolt, pressure sensor module setting is between work piece holder and stepped metal works, the present invention can record and analyze the spectral characteristic of monodentate, the change procedure of multiple tooth sawing force and monodentate, multiple tooth sawing force in a sawing process, so that it is determined that influencing the external factor and internal factor of sawing force variation in the metal circular saw bench course of work.
Description
Technical field
The present invention relates to metal circular saw bench shear force testing fields, more specifically, more particularly to a kind of metal circular saw bench list
Tooth and multiple tooth sawing force test device.
Background technique
Metal material sawing is the important procedure of raw material cutting die.In modern manufacturing industry, web for sawing metal is as gold
Cut the starting point of processing, it has also become one of important link during fabricating.Sawing force is one in mechanical processing process
Important parameter, the changing rule for understanding sawing force is not only the needs of machine dynamic characteristics research, and improves machining essence
Degree, the needs for improving cutter life, sawing can improve productivity, save material and reduce secondary operation amount, with
The rapid development of the technologies such as numerically-controlled machine tool, sawing force have become the important judgment basis of self adaptive control.Currently, metal saw shear force
Test and calculating be circular saw bench design with use in difficult point, be directed to both at home and abroad circular saw bench sawing force test related patents
Seldom.The parameter designing of circular saw bench need to be calculated according to sawing force, otherwise be will lead to saw blade and had skidded during the work time, is stuck
Or it is easily damaged.Therefore, a kind of device for testing circular saw bench monodentate, multiple tooth sawing force is designed to test sawing force and sawing
Speed, the correlation of the amount of feeding are very important.
Summary of the invention
It is an object of the invention to solve the problems, such as that the test of circular saw bench sawing force is difficult and provides a kind of metal circular saw bench list
Tooth, multiple tooth sawing force test device can measure the change procedure of monodentate cutting and multiple tooth cutting sawing force and can analyze
The spectral characteristic of sawing force, measurement data is accurate, and the manufacture installation of device is simple；It can especially be recorded in a sawing process
And analyze the change procedure of monodentate, multiple tooth sawing force, and every time feed monodentate, multiple tooth sawing turning work piece when sawing force shape
Condition, so that it is determined that influencing the test device of the factor of sawing force variation.
The present invention is through the following technical solutions to achieve the above objectives: metal circular saw bench monodentate, multiple tooth sawing force test dress
It sets, including metal circular saw bench, stepped metal works, pressure sensor module, amplifier, data acquisition module and mobile working
It stands；
The metal circular saw bench includes reduction gearbox, mobile work platform, saw blade, firm banking and work piece holder, the reduction gearbox peace
In mobile work platform, the saw blade is mounted on the output shaft of the reduction gearbox, and the mobile work platform is mounted on described
The left side of firm banking, work piece holder are mounted on the right side of the firm banking, driven when mobile work platform works reduction gearbox and
Saw blade is along the close and separate stepped metal works of rectilinear direction；The step type metal works are consolidated by work piece holder
Fixed, saw blade is arranged on the motion path when mobile work platform drives in stepped metal works；
The step type metal works include that successively raised multiple steps, the saw blade are the saw of multiple tooth saw to height from left to right
Piece, the height of each step of the step type metal works are just met for the sawing thickness of multiple and different rack saws of saw blade；
The pressure sensor module is mounted on work piece holder by bolt, pressure sensor module setting in work piece holder and
Between stepped metal works, pressure sensor module connects data acquisition module, the data acquisition module by amplifier
Mobile workstation is connected, the pressure sensor module detects the pressure that stepped metal works are subject on work piece holder, and will
The pressure data is transferred to data acquisition module after amplifier carries out signal amplification, and data acquisition module passes the signal to
Mobile workstation.
Further, the work piece holder includes workpiece locating mechanism and workpiece clamping mechanism, the workpiece locating mechanism
For groove profile positioning mechanism, workpiece locating mechanism surface is equipped with the groove matched with stepped metal works bottom, stepped gold
Metal work-pieces are sleeved in the groove of workpiece locating mechanism and can slide back and forth along the groove of workpiece locating mechanism；The workpiece
Clamp system uses the orthogonal clamp system of cross, and workpiece clamping mechanism simultaneously clamps on stepped metal from the top down and from right to left
Workpiece.
Further, the mobile workstation records sawtooth in different rack saw situations according to the signal of pressure sensor module
Under sawing force change and calculate the spectral characteristic of its sawing force.
Further, the pressure sensor module uses 9257B multi -components dynamometer, and 9257B multi -components dynamometer is set
The channel bottom in workpiece locating mechanism is set, the multi -components dynamometer upper surface 9257B is bonded stepped metal works and is located at groove
Internal bottom surface.
Further, the 9257B multi -components dynamometer is bolted on the channel bottom of workpiece locating mechanism.
Further, the amplifier is 5080A charge amplifier.
Specific workflow is as follows: 9257B multi -components dynamometer is mounted on the workpiece locating mechanism of work piece holder
In groove, stepped metal works are mounted on work piece holder, stepped metal works lower end is sleeved on workpiece locating mechanism
Groove in, and by workpiece clamping mechanism by stepped metal works downwards and clamp to the left；By 9257B multi -components dynamometer
Signal wire connect amplifier, and the signal wire of amplifier is connected on data acquisition module, and data acquisition module is connected
Mobile workstation is connect, mobile workstation first carries out equipment debugging, demarcates 9257B multi -components dynamometer, then on metal circular saw bench
Input test routine moves the metal circular saw bench, and the saw blade of metal circular saw bench rotates under the drive of reduction gearbox, and in mobile work
Make to move under the drive of platform to stepped metal works, the different sawtooth of saw blade successively steps different from stepped metal works
It contacts and is cut, the sawing force that stepped metal works are subject to is measured using 9257B multi -components dynamometer in the process,
And the sawing force signal is sent to data acquisition module by amplifier, data acquisition module sends information to mobile working
It is analyzed in standing.
The beneficial effects of the present invention are: the configuration of the present invention is simple is compact, and production cost is low, can be in a sawing process
The spectral characteristic of monodentate, the change procedure of multiple tooth sawing force and monodentate, multiple tooth sawing force is recorded and analyzed, so that it is determined that round metal
The external factor and internal factor of sawing force variation are influenced in the sawing machine course of work.
Detailed description of the invention
Fig. 1 is the overall structure diagram of metal circular saw bench monodentate of the present invention, multiple tooth sawing force test device.
Fig. 2 is the structural schematic diagram of metal circular saw bench of the present invention.
Fig. 3 is the structural schematic diagram of stepped metal works of the invention.
Fig. 4 is the partial enlarged view of stepped metal works and work piece holder of the invention.
In figure, 1- firm banking, 2- mobile work platform, 3- reduction gearbox, 4- metal circular saw bench, 5- saw blade, 6- Workpiece clamping
Mechanism, 7- workpiece locating mechanism, 8- step type metal works, 9- pressure sensor module, 10- amplifier, 11- data acquisition module
Block, 12- mobile workstation, 13- work piece holder.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings:
As shown in Fig. 1 ~ 4, a kind of metal circular saw bench monodentate, multiple tooth sawing force test device, including it is metal circular saw bench 4, stepped
Metal works 8, pressure sensor module 9, amplifier 10, data acquisition module 11 and mobile workstation 12.
The metal circular saw bench 4 includes reduction gearbox 3, mobile work platform 2, saw blade 5, firm banking 1 and work piece holder 13, institute
It states reduction gearbox 3 to be mounted in mobile work platform 2, the saw blade 5 is mounted on the output shaft of the reduction gearbox 3, the mobile work
Make the left side that platform 2 is mounted on the firm banking 1, work piece holder 13 is mounted on the right side of the firm banking 1, mobile work platform
Drive reduction gearbox 3 and saw blade 5 along rectilinear direction close and separate stepped metal works 8 when 2 work；The step type metal
Workpiece 8 is fixed by work piece holder 13, and fortune of the saw blade 5 when mobile work platform 2 drives is arranged in stepped metal works 8
On dynamic path.
The step type metal works 8 include that successively raised multiple steps, the saw blade 5 are multiple tooth to height from left to right
The saw blade of saw, the height of each step of the step type metal works 8 are just met for the sawing of multiple and different rack saws of saw blade 5
Thickness.
The pressure sensor module 9 is mounted on work piece holder 13 by bolt, and pressure sensor module 9 is arranged in work
Between part fixture 13 and stepped metal works 8, pressure sensor module 9 connects data acquisition module 11 by amplifier 10,
The data acquisition module 11 connects mobile workstation 12, and the pressure sensor module 9 detects stepped on work piece holder 13
The pressure that metal works 8 are subject to, and the pressure data is transferred to data acquisition module after amplifier 10 carries out signal amplification
Block 11, data acquisition module 11 pass the signal to mobile workstation 12.
The work piece holder 13 includes workpiece locating mechanism 7 and workpiece clamping mechanism 6, and the workpiece locating mechanism 7 is slot
Type positioning mechanism, 7 surface of workpiece locating mechanism are equipped with the groove matched with stepped 8 bottom of metal works, stepped metal
Workpiece 8 is sleeved in the groove of workpiece locating mechanism 7 and can slide back and forth along the groove of workpiece locating mechanism 7；The work
Part clamp system 6 simultaneously clamps on step type using the orthogonal clamp system of cross, workpiece clamping mechanism 6 from the top down and from right to left
Metal works 8.
The mobile workstation 12 records saw of the sawtooth in different rack saws according to the signal of pressure sensor module 9
Shear force changes and calculates its spectral characteristic.
The pressure sensor module 9 uses 9257B multi -components dynamometer, and 9257B multi -components dynamometer is arranged in workpiece
The channel bottom of positioning mechanism 7, the multi -components dynamometer upper surface 9257B are bonded stepped metal works 8 and are located in the groove portion
Bottom surface.
The 9257B multi -components dynamometer is bolted on the channel bottom of workpiece locating mechanism 7.
The amplifier 10 is 5080A charge amplifier.
Specific workflow is as follows: 9257B multi -components dynamometer is mounted on to the workpiece locating mechanism of work piece holder 13
Groove in, stepped metal works 8 are mounted on work piece holder 13, it is fixed that stepped 8 lower end of metal works is sleeved on workpiece
In the groove of position mechanism 7, and stepped metal works 8 are clamped downwards and to the left by workpiece clamping mechanism 6；9257B is more
The signal wire of component force meter connects amplifier 10, and the signal wire of amplifier 10 is connected on data acquisition module 11, and
Data acquisition module 11 is connected into mobile workstation 12, mobile workstation 12 first carries out equipment debugging, and calibration 9257B multi -components are surveyed
Power meter, then the input test routine on metal circular saw bench 4, move the metal circular saw bench 4, and the saw blade 5 of metal circular saw bench 7 is slowing down
It rotates, and is moved under the drive of mobile work platform 2 to stepped metal works 8, the different sawtooth of saw blade 5 under the drive of case 3
It successively contacts and is cut with the different steps of stepped metal works 8, use 9257B multi -components dynamometer in the process
The sawing force that stepped metal works 8 are subject to is measured, and the sawing force signal is sent to data acquisition module by amplifier 10
Block 11, data acquisition module 11 send information in mobile workstation 12 and are analyzed.
Above-described embodiment is presently preferred embodiments of the present invention, is not a limitation on the technical scheme of the present invention, as long as
Without the technical solution that creative work can be realized on the basis of the above embodiments, it is regarded as falling into the invention patent
Rights protection scope in.
Claims (6)
1. a kind of metal circular saw bench monodentate, multiple tooth sawing force test device, it is characterised in that: including metal circular saw bench (4), ladder
Type metal works (8), pressure sensor module (9), amplifier (10), data acquisition module (11) and mobile workstation (12)；
The metal circular saw bench (4) includes reduction gearbox (3), mobile work platform (2), saw blade (5), firm banking (1) and workpiece clamp
Have (13), the reduction gearbox (3) is mounted on mobile work platform (2), and the saw blade (5) is mounted on the defeated of the reduction gearbox (3)
On shaft, the mobile work platform (2) is mounted on the left side of the firm banking (1), and work piece holder (13) is mounted on described solid
Determine the right side of pedestal (1), to drive reduction gearbox (3) and saw blade (5) to lean near and far along rectilinear direction when mobile work platform (2) works
From stepped metal works (8)；The step type metal works (8) are fixed by work piece holder (13), stepped metal
Workpiece (8) setting is on the motion path when saw blade (5) is in mobile work platform (2) drive；
The step type metal works (8) include that successively raised multiple steps, the saw blade (5) are multiple tooth to height from left to right
The saw blade of saw, the height of each step of the step type metal works (8) are just met for multiple and different rack saws of saw blade (5)
Sawing thickness；
The pressure sensor module (9) is mounted on work piece holder (13) by bolt, and pressure sensor module (9) setting exists
Between work piece holder (13) and stepped metal works (8), pressure sensor module (9) connects data by amplifier (10) and adopts
Collect module (11), the data acquisition module (11) connects mobile workstation (12), and the pressure sensor module (9) detects work
The pressure that stepped metal works (8) are subject on part fixture (13), and the pressure data is subjected to signal by amplifier (10)
It is transferred to after amplification data acquisition module (11), data acquisition module (11) passes the signal to mobile workstation (12).
2. metal circular saw bench monodentate according to claim 1, multiple tooth sawing force test device, it is characterised in that: the work
Part fixture (13) includes workpiece locating mechanism (7) and workpiece clamping mechanism (6), and the workpiece locating mechanism (7) is groove profile positioning
Mechanism, workpiece locating mechanism (7) surface are equipped with the groove matched with stepped metal works (8) bottom, stepped metal work
Part (8) is sleeved in the groove of workpiece locating mechanism (7) and can slide back and forth along the groove of workpiece locating mechanism (7)；Institute
Workpiece clamping mechanism (6) are stated using the orthogonal clamp system of cross, workpiece clamping mechanism (6) is pressed from both sides simultaneously from the top down and from right to left
Tight step type metal works (8).
3. metal circular saw bench monodentate according to claim 1, multiple tooth sawing force test device, it is characterised in that: the shifting
Dynamic work station (12) record sawing force variation of the sawtooth in different rack saws simultaneously according to the signal of pressure sensor module (9)
Calculate its spectral characteristic.
4. metal circular saw bench monodentate according to claim 2, multiple tooth sawing force test device, it is characterised in that: the pressure
Force snesor module (9) uses 9257B multi -components dynamometer, and 9257B multi -components dynamometer is arranged in workpiece locating mechanism (7)
Channel bottom, the multi -components dynamometer upper surface 9257B are bonded the bottom surface that stepped metal works (8) are located in the groove portion.
5. metal circular saw bench monodentate according to claim 4, multiple tooth sawing force test device, it is characterised in that: described
9257B multi -components dynamometer is bolted on the channel bottom of workpiece locating mechanism (7).
6. metal circular saw bench monodentate according to claim 1, multiple tooth sawing force test device, it is characterised in that: described to put
Big device (10) is 5080A charge amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811303187.7A CN109514348A (en) | 2018-11-02 | 2018-11-02 | Metal circular saw bench monodentate, multiple tooth sawing force test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811303187.7A CN109514348A (en) | 2018-11-02 | 2018-11-02 | Metal circular saw bench monodentate, multiple tooth sawing force test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109514348A true CN109514348A (en) | 2019-03-26 |
Family
ID=65774478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811303187.7A Pending CN109514348A (en) | 2018-11-02 | 2018-11-02 | Metal circular saw bench monodentate, multiple tooth sawing force test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109514348A (en) |
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|---|---|---|---|---|
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| CN102672271A (en) * | 2012-05-17 | 2012-09-19 | 杭州飘哲电子科技有限公司 | Saw frame feeding system with constant saw cutting force and variable feeding speed and saw frame feeding method |
| CN103962632A (en) * | 2014-04-14 | 2014-08-06 | 浙江虎鼎机械制造有限公司 | Full-automatic horizontal type metal circular sawing machine and method thereof |
| CN204018853U (en) * | 2014-07-15 | 2014-12-17 | 宜昌宏箭铝业有限责任公司 | A kind of pressure-sensitive arrangements for speed regulation based on saw blade loss prevention |
| CN204108751U (en) * | 2014-05-15 | 2015-01-21 | 安徽省亿海矿山设备制造有限公司 | Sawing machine decline positions saw fast subsystem |
| CN104608009A (en) * | 2015-01-03 | 2015-05-13 | 浙江工业大学 | Band sawing machine test system |
| CN204470713U (en) * | 2015-03-12 | 2015-07-15 | 浙江晨龙锯床股份有限公司 | Band sawing machine intelligence saw cutting system |
| CN209239645U (en) * | 2018-11-02 | 2019-08-13 | 浙江工业大学 | A kind of multiple tooth sawing force test device of metal circular saw bench |
-
2018
- 2018-11-02 CN CN201811303187.7A patent/CN109514348A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU480949A1 (en) * | 1974-02-19 | 1975-08-15 | Центральный Научно-Исследовательский И Проектно-Констукторский Институт Механизации И Энергетики Лесной Промышленности | Stand for testing chain saws |
| CN102672271A (en) * | 2012-05-17 | 2012-09-19 | 杭州飘哲电子科技有限公司 | Saw frame feeding system with constant saw cutting force and variable feeding speed and saw frame feeding method |
| CN103962632A (en) * | 2014-04-14 | 2014-08-06 | 浙江虎鼎机械制造有限公司 | Full-automatic horizontal type metal circular sawing machine and method thereof |
| CN204108751U (en) * | 2014-05-15 | 2015-01-21 | 安徽省亿海矿山设备制造有限公司 | Sawing machine decline positions saw fast subsystem |
| CN204018853U (en) * | 2014-07-15 | 2014-12-17 | 宜昌宏箭铝业有限责任公司 | A kind of pressure-sensitive arrangements for speed regulation based on saw blade loss prevention |
| CN104608009A (en) * | 2015-01-03 | 2015-05-13 | 浙江工业大学 | Band sawing machine test system |
| CN204470713U (en) * | 2015-03-12 | 2015-07-15 | 浙江晨龙锯床股份有限公司 | Band sawing machine intelligence saw cutting system |
| CN209239645U (en) * | 2018-11-02 | 2019-08-13 | 浙江工业大学 | A kind of multiple tooth sawing force test device of metal circular saw bench |
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Application publication date: 20190326 |
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