CN104260123B - Hard mechanical properties of propellant sample pre-treatment flaking device - Google Patents
Hard mechanical properties of propellant sample pre-treatment flaking device Download PDFInfo
- Publication number
- CN104260123B CN104260123B CN201410380214.6A CN201410380214A CN104260123B CN 104260123 B CN104260123 B CN 104260123B CN 201410380214 A CN201410380214 A CN 201410380214A CN 104260123 B CN104260123 B CN 104260123B
- Authority
- CN
- China
- Prior art keywords
- sample
- cutter
- explosion
- stepper motor
- guide
- Prior art date
- 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.)
- Expired - Fee Related
Links
- 239000003380 propellant Substances 0.000 title claims abstract description 17
- 238000002203 pretreatment Methods 0.000 title claims abstract description 8
- DMFGNRRURHSENX-UHFFFAOYSA-N beryllium copper Chemical compound [Be].[Cu] DMFGNRRURHSENX-UHFFFAOYSA-N 0.000 claims abstract description 34
- 238000005520 cutting process Methods 0.000 claims abstract description 16
- 238000005070 sampling Methods 0.000 claims abstract description 7
- 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 description 25
- 241000826860 Trapezium Species 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 238000012360 testing method Methods 0.000 abstract description 11
- 238000012545 processing Methods 0.000 abstract description 7
- 239000000523 sample Substances 0.000 description 65
- 239000003814 drug Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 208000025962 Crush injury Diseases 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 239000004449 solid propellant Substances 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000004154 testing of material Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a kind of hard mechanical properties of propellant sample pre-treatment flaking device, that existing manual Cutting Process size Control is difficult, collimation is poor in order to solve, the problem that difficult quality meets the demands, the present invention is made up of control system, sampling system and beryllium copper tooling system.The sheet of propellant thickness of the present invention's processing is even, and size meets test request, saves sample dosage, is applicable to the processing of the larger sheet of propellant of hardness.
Description
Technical field
The present invention relates to a kind of flaking device, belong to propellant field tests.
Background technology
Mechanical property is one of important performance of propellant, and security when being related to solid propellant rocket acting and the storage life of engine, be formed with corresponding standard method, at present as GJB770B-2005 method 413.1-413.4 and 414.1 etc.The processing of propellant block medicine is mainly processed into the sample of given size by its test method, by in Material Testing Machine by applying constant stress or strain or rate of stressing, obtain the mechanical property of propellant under given conditions, as the maximum tensile strength, fracture strength, maximum elongation rate and elongation at break.Sample pretreating first all needs the propellant block medicine made to be processed into the uniform sheet with certain thickness (thickness deviation ± 0.5mm), under other mould, be then processed into the shape and size needed for test.At present, during the wafer processes of specific thickness, operating personnel adopt manual processing, and mainly there is following shortcoming: 1) manual cutting causes specimen size uneven, does not often meet the test request of national military standard.When propellant block medicine cuts, sample sheet thickness on a face of square billet medicine, depicts equally spaced straight line location by ruler, uses manual along the line cutting of beryllium copper cutter to form.Sample thin slice is in process, manual drawing rectilineal interval is uneven, make blade and straight line to its inaccuracy by visually observing during cutting, in working angles, square billet medicine easily offsets left and right in addition, all cause the sample sheet thickness cut out uneven, often exceed the deviation that standard specifies, do not meet the test request of national military standard, this is unallowed in the quality control of military products.2) the manual dose that cuts is wasted comparatively large, and efficiency is lower.The uneven waste causing dose off quality caused in sample flaking process, and cause test data random, discreteness is large, and data are inaccurate, add the artifical influence factor of result of the test.Full cutting and manual measurement by hand, efficiency is low, for the square billet medicine that hardness is larger, wastes time and energy.
Summary of the invention
In order to solve deficiency and the defect of prior art problem, the invention provides a set of hard mechanical properties of propellant sample pre-treatment flaking device, the arrangement achieves the machining of propellant sample thin slice, processing sheet thickness even, uniformity good, quality meets national military standard test request, save sample dosage.
Hard mechanical properties of propellant sample pre-treatment flaking device provided by the invention, comprises control system, beryllium copper tooling system and sampling system.
Described control system comprises control unit, the explosion-proof stepper motor of side pressure, the explosion-proof stepper motor of upper pressure, Antiexplosion air compressor and piston rod composition, and primary responsibility drives the motion of explosion-proof stepper motor and the inflation/deflation process of Antiexplosion air compressor.Control unit is positioned at crossbeam near base seat support side, and the explosion-proof stepper motor of upper pressure and Antiexplosion air compressor are positioned at the side of crossbeam away from base seat support, and the explosion-proof stepper motor of side pressure is positioned at base seat support lower end.
Described sampling system mainly comprises sample cell, pedestal, horizontal guide groove, rectangular recess, alignment pin, fixed dam, crossbeam, top board connecting rod, top board, side guide connecting rod and side guide composition.Pedestal is the base of whole topping machanism, sample cell is enclosed by pedestal, base seat support, sample cell antetheca and sample cell rear wall and is formed, sample cell antetheca, sample cell rear wall distal end faces and pedestal intersection have rectangular recess, pedestal is divided into the sample support platform of sample stage and one fixed width, rectangular recess is parallel to beryllium copper cutter, sample fixed dam is positioned at sample support platform end, and perpendicular to sample support platform.Crossbeam is parallel to pedestal and is connected with base seat support.Side guide is connected with the explosion-proof stepper motor of side pressure by side guide connecting rod, the horizontal guide groove being parallel to sample cell antetheca is had in the middle of example platform, bottom side guide, trapezoidal confinement block is snapped in horizontal guide groove, an alignment pin is provided with at horizontal guide groove end, the width of alignment pin is the maximum horizontal displacement of 8mm, constrained side pressing plate.Top board to be positioned at above sample cell 2mm place after beryllium copper cutter, and perpendicular to beryllium copper cutter, the width of top board is 10mm, and top board is connected with the explosion-proof stepper motor of upper pressure by top board connecting rod.The height of fixed dam, far below the thickness of sample, so that when cutting, reduces crush injury and cutting resistance.Pedestal entirety adopts stainless steel, and side guide and top board all adopt aluminium material.The height of side guide is 30mm, lower than the thickness of sample.
Described beryllium copper tooling system comprises beryllium copper cutter, trapezoidal cutter guide bar, vertical trapezium guide channel, hold-down screw nut group and cutter connecting rod composition.Sample cell antetheca and rear wall end both ends of the surface are carved with vertical trapezium guide channel respectively perpendicular to sample stage, trapezoidal cutter guide bar is placed in the vertical trapezium guide channel be engaged mutually with it, beryllium copper cutter dual-side is separately fixed on the trapezoidal cutter guide bar in both sides by hold-down screw nut group, cutter upper end is successively by cutter connecting rod, and piston rod is connected with Antiexplosion air compressor.Distance between beryllium copper cutter and fixed dam is decided to be 10mm.Beryllium copper cutter adopts wedge shape cutter, key groove 3 degree, the thickest 2.5mm.This device is maximum can be of a size of 200mm × 120mm × 60mm by processing sample square billet medicine.
Beneficial effect of the present invention is embodied in the following aspects:
(1) adopt the present invention, can ensure that specimen size is controlled, improve the uniformity of sample thin slice.
(2) the present invention is adopted, in working angles except the rim charge of first and last a slice can not utilize, all the other cut test pieces and all meet test requirements document and thickness deviation within ± 0.5mm, reduce artifical influence factor, decrease the wasting of resources, improve the stock-removing efficiency of sample thin slice.
(3) the present invention is in the whole working angles of sample thin slice, does not need manual measurement, decreases the human factor in working angles, substantially achieves the machining of sample thin slice.
(4) the present invention adopts explosion-proof stepper motor, Antiexplosion air compressor respectively as one of part of control system, beryllium copper cutter is as the main tool of cutting, ensure that the security in test piece process, be applicable to the processed safely of explosive wastewater material.
Accompanying drawing explanation
Fig. 1 is the overall formation schematic diagram of hard mechanical properties of propellant sample pre-treatment flaking device of the present invention.1 pedestal in Fig. 1,2 alignment pins, 3 rectangular recess, 4 sample support platforms, 5 fixed dams, 6 vertical trapezium guide channels, 7 beryllium copper cutters, 8 hold-down screw nut groups, 9 trapezoidal cutter guide bars, 10 cutter connecting rods, 11 top board connecting rods, 12 piston rods, explosion-proof stepper motor is pressed, 14 Antiexplosion air compressors, 15 crossbeams on 13,16 control units, 17 base seat supports, 18 sample stages, the explosion-proof stepper motor of 19 side pressure, 20 side guide connecting rods, 21 side guides, 22 samples, 23 horizontal guide grooves, 24 sample cell antethecas, 25 sample cell rear walls, 26 top boards.
Fig. 2 is beryllium copper cutter 7 in Fig. 1 and the connection diagram between cutter connecting rod 10.7-1 cutter hold-down screw nut in Fig. 2,8-1,8-2,8-3,8-4 hold-down screw nut group.
Fig. 3 is side guide 21 schematic diagram in Fig. 1.The trapezoidal confinement block of 21-1 in Fig. 3.
Detailed description of the invention
Below in conjunction with accompanying drawing and preferred embodiment, the present invention is described in further detail.
The present invention includes control system, beryllium copper tooling system and sampling system.Described control system mainly comprises control unit 16, the explosion-proof stepper motor of side pressure 19, the explosion-proof stepper motor 13 of upper pressure, Antiexplosion air compressor 14 and piston rod 12 and forms, and primary responsibility controls upper pressure, the explosion-proof motion of stepper motor 13,19 of side pressure and the inflation/deflation process of Antiexplosion air compressor 14.Control unit is positioned at crossbeam 15 near base seat support 17 side, and the explosion-proof stepper motor 13 of upper pressure and Antiexplosion air compressor 14 are positioned at crossbeam 15 one end away from base seat support 17, and the explosion-proof stepper motor 19 of side pressure is positioned at base seat support 17 lower end.Described sampling system mainly comprises sample cell, pedestal 1, horizontal guide groove 23, rectangular recess 3, alignment pin 2, fixed dam 5, crossbeam 15, top board connecting rod 11, top board 26, side guide connecting rod 20 and side guide 21 and forms.Pedestal 1 is the base of whole topping machanism, pedestal 1 entirety adopts stainless steel, sample cell is enclosed by pedestal 1, base seat support 17, sample cell antetheca 24 and sample cell rear wall 25 and is formed, sample cell antetheca 24, sample cell rear wall 25 distal end faces and pedestal 1 intersection have rectangular recess 3, pedestal 1 is divided into the sample support platform 4 of sample stage 18 and one fixed width, rectangular recess 3 is parallel to beryllium copper cutter 7, fixed dam 5 is positioned at sample support platform 4 end, and perpendicular to sample support platform 4, the distance between beryllium copper cutter 7 and fixed dam 5 is decided to be 10mm.The height of fixed dam 5 is far below the thickness of sample 22, so that when cutting, reduce crush injury and cutting resistance, the height of side guide 21 is 30mm, lower than the thickness of sample 22.Crossbeam 15 is parallel to pedestal 1 and is connected with base seat support 17.Side guide 21 is also connected by the explosion-proof stepper motor 19 of side guide connecting rod 20 and side pressure, bottom having horizontal guide groove 23 side guide 21 being parallel to sample cell antetheca 24 in the middle of sample stage 18, trapezoidal confinement block 21-1 is snapped in horizontal guide groove 23, an alignment pin 2 is provided with at horizontal guide groove 23 end, the maximum horizontal displacement of constrained side pressing plate 21, the width of alignment pin 2 is 8mm.Top board 26 is positioned at the rear 2mm place of beryllium copper cutter 7 above sample cell, and perpendicular to beryllium copper cutter 7.The width of top board 26 is 10mm.Top board 26 is connected with the explosion-proof stepper motor 13 of upper pressure by top board connecting rod 11.Side guide 21 and top board 26 all adopt aluminium material.Described beryllium copper tooling system comprises beryllium copper cutter 7, trapezoidal cutter guide bar 9, vertical trapezium guide channel 6, hold-down screw nut group 8 and cutter connecting rod 10 and forms.Sample cell antetheca 24 and rear wall 25 end both ends of the surface are carved with vertical trapezium guide channel 6 respectively perpendicular to sample stage 18, trapezoidal cutter guide bar 9 is placed in the vertical trapezium guide channel 6 be engaged mutually with it, beryllium copper cutter 7 dual-side is separately fixed on the trapezoidal cutter guide bar 9 in both sides by hold-down screw nut group 8, beryllium copper cutter 7 upper end is connected to cutter connecting rod 10 by cutter hold-down screw nut 7-1, and is connected with Antiexplosion air compressor 14 by cutter connecting rod 10, piston rod 12 successively.Beryllium copper cutter 7 adopts wedge shape cutter, key groove 3 degree, the thickest 2.5mm.Maximum square billet of processing is of a size of 200mm × 120mm × 60mm.
During use, before cutting first by medicine block at 55 DEG C of water-bath preheating 30min, reduce probe intensity be conducive to beryllium copper Tool in Cutting.During cutting, sample 22 is placed in sample stage 18, first the explosion-proof stepper motor 19 of side pressure moves, and is promoted moving along horizontal guide groove 23 of side guide 21 extension bar welded with side guide connecting rod 20 by side guide connecting rod 20, and then promotion sample 22 moves to fixed dam 5 direction.When sample 22 front end contacts with fixed dam 5, the stop motion of side pressure explosion-proof stepper motor 19, and ensure that side guide 21 pairs of samples 22 apply certain lateral pressure.Now, the explosion-proof stepper motor 13 of upper pressure starts, and the top board connecting rod 11 promoting to be attached thereto moves downward, and then the top board 26 promoting to weld with top board connecting rod 11 moves downward, and applies certain pressure to the upper surface of sample 22.After top board 26 pairs of samples 22 apply certain pressure, the Antiexplosion air compressor 14 be connected with trapezoidal cutter guide bar 9 starts, the beryllium copper cutter 7 be connected with trapezoidal cutter guide bar 9 is driven to move downward along vertical trapezium guide channel 6, after beryllium copper cutter 7 moves to the rectangular recess 3 of extreme lower position, Antiexplosion air compressor 14 is exitted rapidly, piston rod 12 drives beryllium copper cutter 7 to move upward, make beryllium copper cutter 7 Rapid reset, then the explosion-proof stepper motor 13 of upper pressure drives top board 26 to move upward, reset, release sample 22 upper surface pressure.The explosion-proof stepper motor 19 of side pressure drives side guide 21 counter motion, and the pressure of release sample 22 side, cutting at one time terminates.After manually taking the thin slice cut away, the explosion-proof stepper motor 19 of side pressure promotes sample 22 by side guide 21 and travels forward until contact with fixed dam 5, enters working angles next time.When the trapezoidal confinement block 21-1 of side guide 21 lower surface is to alignment pin 2, a cutwork end cycle, the explosion-proof stepper motor 19 of side pressure drives side guide 21 to reset, and takes off residual leftover pieces, enters the cutting preparatory stage of next sample.
Claims (2)
1. a hard mechanical properties of propellant sample pre-treatment flaking device, is characterized in that: comprise control system, beryllium copper tooling system and sampling system;
Described control system comprises control unit [16], the explosion-proof stepper motor of side pressure [19], the explosion-proof stepper motor of upper pressure [13], Antiexplosion air compressor [14] and piston rod [12]; Control unit [16] is responsible for driving upper pressure, the motion of the explosion-proof stepper motor of side pressure [13,19] and the inflation/deflation process of Antiexplosion air compressor [14];
Described sampling system comprises sample cell, pedestal [1], horizontal guide groove [23], rectangular recess [3], alignment pin [2], fixed dam [5], crossbeam [15], top board connecting rod [11], top board [26], side guide connecting rod [20] and side guide [21], the base that pedestal [1] is whole topping machanism, sample cell is by pedestal [1], base seat support [17], sample cell antetheca [24] and sample cell rear wall [25] enclose and form, sample cell antetheca [24] and sample cell rear wall [25] two distal end faces and pedestal [1] intersection have rectangular recess [3], pedestal [1] is divided into the sample support platform [4] of sample stage [18] and one fixed width, rectangular recess [3] is parallel to beryllium copper cutter [7], sample fixed dam [5] is positioned at sample support platform [4] end, and perpendicular to sample support platform [4], crossbeam is parallel to pedestal [1] and is connected with base seat support [17], the explosion-proof stepper motor of side pressure [19] is installed on base seat support [17] lower end, and be connected with side guide [21] by side guide connecting rod [20], the horizontal guide groove [23] being parallel to sample cell antetheca [24] is had in the middle of sample stage [18], side guide [21] the trapezoidal confinement block in bottom [21-1] is snapped in horizontal guide groove [23], an alignment pin [2] is provided with at horizontal guide groove [23] end, the maximum horizontal displacement of constrained side pressing plate [21], top board [26] is connected with the explosion-proof stepper motor of upper pressure [13] by top board connecting rod [11],
Described beryllium copper tooling system comprises beryllium copper cutter [7], trapezoidal cutter guide bar [9], vertical trapezium guide channel [6], hold-down screw nut group [8] and cutter connecting rod [10] composition, sample cell antetheca [24] and rear wall [25] end both ends of the surface are carved with vertical trapezium guide channel [6] respectively perpendicular to sample stage [18], trapezoidal cutter guide bar [9] is placed in the vertical trapezium guide channel [6] be engaged mutually with it, beryllium copper cutter [7] dual-side is separately fixed on the trapezoidal cutter guide bar [9] in both sides by hold-down screw nut group [8], cutter upper end is successively by cutter connecting rod [10], piston rod [12] is connected with Antiexplosion air compressor [14].
2. hard mechanical properties of propellant sample pre-treatment flaking device according to claim 1, it is characterized in that: control unit [16] is positioned at crossbeam [15] near base seat support [17] side, the explosion-proof stepper motor of upper pressure [13] and Antiexplosion air compressor [14] are positioned at crossbeam [15] away from base seat support [17] side, the explosion-proof stepper motor of side pressure [19] is positioned at base seat support [17] lower end, the height of fixed dam [5] is lower than the height of sample [22], during cutting, the leading portion of sample [22] is placed on sample support platform [4].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410380214.6A CN104260123B (en) | 2014-08-04 | 2014-08-04 | Hard mechanical properties of propellant sample pre-treatment flaking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410380214.6A CN104260123B (en) | 2014-08-04 | 2014-08-04 | Hard mechanical properties of propellant sample pre-treatment flaking device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104260123A CN104260123A (en) | 2015-01-07 |
| CN104260123B true CN104260123B (en) | 2015-12-09 |
Family
ID=52151767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410380214.6A Expired - Fee Related CN104260123B (en) | 2014-08-04 | 2014-08-04 | Hard mechanical properties of propellant sample pre-treatment flaking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104260123B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007083378A (en) * | 2005-09-16 | 2007-04-05 | Gansaa Japan Kk | Paper sheet cutting and separating device |
| CN2848504Y (en) * | 2005-12-07 | 2006-12-20 | 彩虹集团电子股份有限公司 | Explosion proof belt cutting device |
| CN101482459B (en) * | 2008-01-11 | 2012-05-30 | 西北工业大学 | Composite propellant small cylinder finishing tool apparatus |
| JP4878381B2 (en) * | 2009-01-29 | 2012-02-15 | 日立金属株式会社 | Folded booklet transport device |
| CN201389868Y (en) * | 2009-04-22 | 2010-01-27 | 乐国兴 | Chip cutter |
| CN201728686U (en) * | 2010-08-17 | 2011-02-02 | 杨贵庭 | Material cutting machine tool |
| CN203738853U (en) * | 2014-02-13 | 2014-07-30 | 新疆宏鸟节水材料有限公司 | Automatic fixed-length cutting system for PE water supply pipes |
-
2014
- 2014-08-04 CN CN201410380214.6A patent/CN104260123B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN104260123A (en) | 2015-01-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204686188U (en) | A kind of aluminium alloy extrusions many row's docking anury automatic material feeding mechanism | |
| CN201456258U (en) | Combined clamp for cutting single-crystal silicon bar materials | |
| CN106112095A (en) | A kind of steel pipe cutting equipment | |
| CN104142263B (en) | Soft propellant mechanical property test sample pretreatment slice cutting device | |
| CN105500643A (en) | Light guide plate pouring gate cold-cutting machine for cutting step by step and cold-cutting method thereof | |
| CN205733198U (en) | The sheet metal accurate shearing manipulation platform that a kind of cylinder promotes | |
| CN215787056U (en) | Plate shearing machine | |
| CN107717054A (en) | A kind of auto-manual feeding measures integrated digital controlled plate shearing machine | |
| CN205733193U (en) | The plate shearing machine that the sheet metal that a kind of cylinder promotes accurately is sheared | |
| CN104260123B (en) | Hard mechanical properties of propellant sample pre-treatment flaking device | |
| CN207372417U (en) | A kind of sheet metal is molded blanking machine | |
| CN203091836U (en) | High-precision plate shearing machine | |
| CN207289055U (en) | A kind of steel-plate cutter | |
| CN203679862U (en) | Fixture used in cooperation with metal band sawing machine | |
| CN206020135U (en) | The controllable equipment for making multiple dimensioned Multiple Shape rock fracture of roughness | |
| CN205364426U (en) | Light guide plate runner cold cut machine of substep cutting | |
| CN207806739U (en) | A kind of integrated digital controlled plate shearing machine of auto-manual feeding measurement | |
| CN201607341U (en) | Ham sausage slicer | |
| CN106525524B (en) | A kind of brain tissue sample preparation device and preparation method | |
| CN203578918U (en) | Length determination device for vertical-type circular sawing machine | |
| CN201464349U (en) | Composite contact bonding strength tester | |
| CN205764177U (en) | Base sword product broaching square hole frock | |
| CN219190367U (en) | Cutting device for plastic detection sheet sample | |
| CN206230272U (en) | A kind of milling machine processes the mould of tensile sample | |
| CN214684517U (en) | Steel automatic cutting equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151209 |