CN105382295A - Automatic stress test drilling machine and working method thereof - Google Patents
Automatic stress test drilling machine and working method thereof Download PDFInfo
- Publication number
- CN105382295A CN105382295A CN201511028406.1A CN201511028406A CN105382295A CN 105382295 A CN105382295 A CN 105382295A CN 201511028406 A CN201511028406 A CN 201511028406A CN 105382295 A CN105382295 A CN 105382295A
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- Prior art keywords
- drill gun
- screw
- bore holes
- automatic stress
- stress testing
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B39/00—General-purpose boring or drilling machines or devices; Sets of boring and/or drilling machines
- B23B39/14—General-purpose boring or drilling machines or devices; Sets of boring and/or drilling machines with special provision to enable the machine or the drilling or boring head to be moved into any desired position, e.g. with respect to immovable work
-
- 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
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/01—Frames, beds, pillars or like members; Arrangement of ways
-
- 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
- B23Q15/00—Automatic control or regulation of feed movement, cutting velocity or position of tool or work
- B23Q15/20—Automatic control or regulation of feed movement, cutting velocity or position of tool or work before or after the tool acts upon the workpiece
- B23Q15/22—Control or regulation of position of tool or workpiece
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses an automatic stress test drilling machine. The automatic stress test drilling machine comprises a base and a gun drill part, wherein the gun drill part is erected by the base and comprises a driving device and a gun drill driven by the driving device to move. The automatic stress test drilling machine and the working method thereof, provided by the invention have the advantages that the drilling machine is capable of realizing an automatic driving function in comparison with controlling drilling depth and accuracy manually, and is compact in structure and more convenient and accurate in operation. The gun drill part swings at a certain angle around a pin roll, so that an angle between the gun drill part and a to-be-measured sample surface can be finely adjusted to adapt to stress test drill holes at various positions with complex structures. The drilling machine provided by the invention can realize the adjustment on arranging angle and height of the base through stand bars arranged at the bottom part of a rack plate to ensure the stability of work. The gun drill provided by the invention is fixed by adopting a collet chuck manner, so the high-precision positioning accuracy of the gun drill is much facilitated. According to the automatic stress test drilling machine and the working method thereof, a longitudinal frame and a horizontal frame are used to realize the quick positioning of the gun drill part in all sides in a plane.
Description
Technical field
The present invention relates to a kind of automatic stress testing bore holes machine and method of work thereof, belong to the technical field of material residual stress test.
Background technology
In mechanical processing process, the uneven plastic deformation that the change of external force and temperature causes is the main cause producing residual stress.In casting, forging, welding and all kinds of cutting process, workpiece all can cause the redistribution of residual stress situation due to the effect by external force and temperature, just may affect the assembly precision of accessory size and the accuracy of form and position and parts, reduce the ability of the fatigue resistance of part, stress corrosion resistant and creep resistant cracking, finally have influence on performance and the service life of machinery equipment.Therefore, the stress link of testing raw material, part or equipment is most important.
The method of test residual stress is a lot, as grooving stress free method, Blind Hole Method, ray diffraction method, method of magnetic, supercritical ultrasonics technology etc., because Blind Hole Method surveys residual stress owing to using equipment simple, onsite application is convenient, and have employed resistance strain measurement technology, certainty of measurement is high, destructive little, is residual stress measuring method the most frequently used in current engineering.Whether drilling equipment operation facilitates and the high accuracy of holing (degree of depth), is the key ensureing drilling quality, is also the key factor ensureing residual stress measurement precision.But in practical operation, particularly installing drill aperture apparatus usually needs 2 people's cooperations in measured workpiece surface or other on-plane surfaces, vertical and inclined plane, works in coordination, add testing arrangement to the fixing difficulty of neutralization, time-consuming.
Stress test boring is in the market general adopts Manual drilling equipment, and Main Basis operating personnel experience during boring, borehole accuracy (degree of depth) cannot ensure, affects stress test result.And the testing time is long, efficiency is low.Therefore relate to one and no longer rely on operating personnel's experience, technology etc., ensure drilling depth and positional precision from 26S Proteasome Structure and Function, greatly improve the rig of test accuracy rate and efficiency, become the technical problem that this area is urgently to be resolved hurrily.
Summary of the invention
For the deficiencies in the prior art, the invention discloses a kind of automatic stress testing bore holes machine.
The present invention also discloses a kind of method of work of above-mentioned drilling machine.
Technical scheme of the present invention is as follows:
A kind of automatic stress testing bore holes machine, comprise base and erected the drill gun portion of setting by described base, described drill gun portion comprises drive unit and the drill gun by drive unit actuation movement.
Preferred according to the present invention, described drill gun is connected with described drive unit by drill gun seat.
Preferred according to the present invention, described drill gun seat is connected with described drive unit with Positioning Gear by tooth bar.
Preferred according to the present invention, be connected with described drill gun seat by collet at described drill gun.The advantage herein designed is, improves stability when drill gun borehole accuracy and work.
Preferred according to the present invention, described drive unit comprises the motor that the fixed part, movable part and the driving movable part that are fixedly connected with described base move, described fixed part and movable part by transmission shafts to connection.
Preferred according to the present invention, described motor is arranged on movable part, and fixed part is provided with screw, is connected with shaft coupling and leading screw in turn with described motor, described leading screw to be axially disposed within screw and with described screw with the use of.The advantage herein designed is, enables described movable part and fixed part relative motion and then drive drill gun axially-movable by the cooperation of screw and leading screw.
Preferred according to the present invention, described motor is arranged on fixed part, and movable part is provided with screw, is connected with shaft coupling and leading screw in turn with described motor, described leading screw to be axially disposed within screw and with described screw with the use of.The advantage herein designed is, enables described movable part and fixed part relative motion and then drive drill gun axially-movable by the cooperation of screw and leading screw.
Preferred according to the present invention, described base comprises frame dish, and described frame dish is provided with longitudinal frame that fore-and-aft direction slip is arranged; The transverse strands that left and right directions slip is arranged is provided with in described longitudinal frame; Described transverse strands is connected with described fixed part by bearing pin; Described longitudinal frame is by stretching screw and longitudinal lock-screw adjustment locking; Described transverse strands is by horizontal lock-screw adjustment locking.The advantage herein designed is, realizes, to the exact position adjustment among a small circle of drill gun portion, can realizing position accurate adjustment behind selected region to be measured without the need to moving drilling machine again.
Preferred according to the present invention, described base also comprises at least 3 are arranged on described frame dish bottom for adjusting angle and leg highly.The advantage herein designed is, angle when facilitating base to lay and height coarse adjustment, the stable install and adjust complete machine being convenient to described drilling machine is parallel with testing sample surface in the horizontal.
Preferred according to the present invention, described leg comprises the ball rod, clamp nut, magnet base and the magnetic suction disc that are connected with described frame dish, described ball rod is connected by the locking nut arranged in frame tray bottom, and the ball head of described ball rod is coordinated by clamp nut and magnet base makes described magnet base be that multi-angle is arranged.The advantage herein designed is, adopts magnetic part to realize the firm installation of whole drilling machine.
Preferred according to the present invention, the side that described drill gun seat is fixedly connected with tooth bar is provided with swallow-tail form cutting, is provided with accepts described swallow-tail form slot in the side that described drive unit is relative with tooth bar.The advantage herein designed is, improves stability and the location accuracy of drill gun seat.
A method of work for above-mentioned drilling machine, comprises step as follows:
1) automatic stress testing bore holes machine is placed in testing sample surface;
2) drill gun adjusting automatic stress testing bore holes machine is vertical with described testing sample surface angle;
3) bore position of automatic stress testing bore holes machine is adjusted;
4) control described automatic stress testing bore holes machine actuating device, and then drive described drill gun at described testing sample surface drilling.
Above-mentioned steps 4) in, control described automatic stress testing bore holes machine actuating device by computer programming.
, described step 4 preferred according to the present invention) before, by the engagement of adjustment tooth bar and Positioning Gear and then the distance that adjusts between described drill gun and testing sample surface.
Preferred according to the present invention, step 4) in, drive leading screw to coordinate with screw by motor, and then drive movable part and drill gun axially-movable.
Preferred according to the present invention, described step 2) in, by as follows for the method for adjustment that automatic stress testing bore holes machine is placed in testing sample surface:
1 ?1) fine position: to be slided the fine position that the transverse strands that arranges realizes drive unit and drill gun portion by slide longitudinal frame of arranging and left and right directions of adjustment fore-and-aft direction;
1 ?2) angle adjustment: realizing fine setting to drill gun alignment angle by adjusting described bearing pin, realizing vertical to testing sample surface of drill gun.
Preferred according to the present invention, in step 1) in, also comprise the accurate adjustment to described drive unit and drill gun portion: realize the adjustment of laying angle to described drive unit and drill gun portion by the leg of the adjusting angle of adjustment rack dish bottom.
Advantage of the present invention is:
1, drilling machine of the present invention is compared to Non-follow control drilling depth and precision, can realize automatically driving function, and its compact conformation, accurately more convenient to operate.
2, described drill gun portion swings certain angle realization around described bearing pin and enables itself and testing sample surface vernier angle, to adapt to the stress test boring of various labyrinth position.
3, the leg that drilling machine of the present invention can also be arranged by frame tray bottom realizes the adjustment of described base being laid to angle and height, and then the stability of the work of guarantee.
4, drill gun described in the present invention adopts collet mode to fix, the high-precision positioning precision of more convenient drill gun.
5, the present invention utilizes longitudinal frame and transverse strands to realize the quick position of position all around planar, drill gun portion.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention;
Fig. 2 is overall structure schematic diagram of the present invention, side partial sectional view;
Fig. 3 is overall structure schematic diagram of the present invention, side partial sectional view;
Fig. 4 is overall structure schematic diagram of the present invention, top view;
Fig. 5 is the overall structure schematic diagram of invention, stereogram;
Figure 1 ?in 5,1, motor; 2, shaft coupling; 3, housing; 4, bearing; 5, screw; 6, leading screw; 7, ball; 8, bearing pin; 9, locking nut; 10, clamp nut; 11, ball rod; 12, magnet base; 13, magnetic suction disc; 14, slide rail; 15, transverse strands; 16, nut; 17, collet; 18, fixed part; 19, drill gun seat; 20, tooth bar; 21, Positioning Gear; 22, worm gear case; 23, worm screw; 24, worm gear; 25, fastening positioning disk; 26, longitudinal frame; 27, drill gun; 28, leg; 29, frame dish; 30, stretching screw; 31, longitudinal lock-screw; 32, horizontal lock-screw; 35, swallow-tail form cutting; 36, swallow-tail form slot.
Detailed description of the invention
Below in conjunction with embodiment and Figure of description, the present invention is described in detail, but is not limited thereto.
Embodiment 1,
A kind of automatic stress testing bore holes machine, comprise base and erected the drill gun portion of setting by described base, described drill gun portion comprises drive unit and the drill gun 27 by drive unit actuation movement.
Described drill gun 27 is connected with described drive unit by drill gun seat 19.
Described drill gun seat 19 is connected with described drive unit with Positioning Gear 21 by tooth bar 20.
Be connected with described drill gun seat 19 by collet 17 at described drill gun 27.
Embodiment 2,
A kind of automatic stress testing bore holes machine as described in Example 1, its difference is, described drive unit comprises the motor 1 that the fixed part 18, movable part and the driving movable part that are fixedly connected with described base move, described fixed part and 18 movable parts by transmission shafts to connection.
Described motor 1 is arranged on movable part, and fixed part 18 is provided with screw 5, is connected with shaft coupling 2 and leading screw 6 in turn with described motor 1, described leading screw 6 to be axially disposed within screw 5 and with described screw 5 with the use of.
Embodiment 3,
A kind of automatic stress testing bore holes machine as described in Example 2, its difference is, described motor 1 is arranged on fixed part 18, and movable part is provided with screw 5, be connected with shaft coupling 2 and leading screw 6 in turn with described motor 1, described leading screw 6 to be axially disposed within screw 5 and with described screw 5 with the use of.
Embodiment 4,
A kind of automatic stress testing bore holes machine as described in Example 3, its difference is, described base comprises frame dish 29, and described frame dish 29 is provided with longitudinal frame 26 that fore-and-aft direction slip is arranged; The transverse strands 15 that left and right directions slip is arranged is provided with in described longitudinal frame 26; Described transverse strands 15 is connected with described fixed part 18 by bearing pin 4; Described longitudinal frame 26 adjusts locking by stretching screw 30 and longitudinal lock-screw 31; Described transverse strands 15 adjusts locking by horizontal lock-screw 32.
Embodiment 5,
A kind of automatic stress testing bore holes machine as described in embodiment 1 ?4, its difference is, described base also comprises at least 3 are arranged on described frame dish bottom for adjusting angle and leg 28 highly.
Described leg 28 comprises the ball rod 11, clamp nut 10, magnet base 12 and the magnetic suction disc 13 that are connected with described frame dish, described ball rod 11 is connected by the locking nut 10 arranged bottom frame dish 29, and the ball head of described ball rod 11 is coordinated by clamp nut 10 and magnet base 12 makes described magnet base 12 arrange in multi-angle.
Embodiment 6,
A kind of automatic stress testing bore holes machine as described in embodiment 1 ?5, its difference is, the side that described drill gun seat 19 is fixedly connected with tooth bar 20 is provided with swallow-tail form cutting 35, is provided with accepts described swallow-tail form slot 36 in the side that described drive unit is relative with tooth bar 20.
Embodiment 7,
A method of work for drilling machine as described in embodiment 1 ?6, comprises step as follows:
1) automatic stress testing bore holes machine is placed in testing sample surface;
2) drill gun adjusting automatic stress testing bore holes machine is vertical with described testing sample surface angle;
3) bore position of automatic stress testing bore holes machine is adjusted;
4) control described automatic stress testing bore holes machine actuating device, and then drive described drill gun at described testing sample surface drilling.
Embodiment 8,
The method of work of drilling machine as described in Example 7, its difference is, described step 3) before, by the engagement of adjustment tooth bar and Positioning Gear and then the distance that adjusts between described drill gun and testing sample surface.
Embodiment 9,
The method of work of drilling machine as described in embodiment 7,8, its difference is, step 3) in, drive leading screw to coordinate with screw by motor, and then drive movable part and drill gun axially-movable.
Embodiment 10,
The method of work of drilling machine as described in embodiment 7 ?9, its difference is, described step 2) in, by as follows for the method for adjustment that automatic stress testing bore holes machine is placed in testing sample surface:
1 ?3) fine position: to be slided the fine position that the transverse strands that arranges realizes drive unit and drill gun portion by slide longitudinal frame of arranging and left and right directions of adjustment fore-and-aft direction;
1 ?4) angle adjustment: realizing fine setting to drill gun alignment angle by adjusting described bearing pin, realizing vertical to testing sample surface of drill gun.
Embodiment 11,
The method of work of drilling machine as described in embodiment 7 ?10, its difference is, in step 1) in, also comprise the accurate adjustment to described drive unit and drill gun portion: realize the adjustment of laying angle to described drive unit and drill gun portion by the leg of the adjusting angle of adjustment rack dish bottom.
Claims (10)
1. an automatic stress testing bore holes machine, is characterized in that, this drilling machine comprises base and erected the drill gun portion of setting by described base, and described drill gun portion comprises drive unit and the drill gun by drive unit actuation movement.
2. a kind of automatic stress testing bore holes machine according to claim 1, is characterized in that, described drill gun is connected with described drive unit by drill gun seat.
3. a kind of automatic stress testing bore holes machine according to claim 2, it is characterized in that, described drill gun seat is connected with described drive unit with Positioning Gear by tooth bar.
4. a kind of automatic stress testing bore holes machine according to claim 2, be is characterized in that, be connected at described drill gun by collet with described drill gun seat.
5. a kind of automatic stress testing bore holes machine according to claim 1, it is characterized in that, described drive unit comprises the motor that the fixed part, movable part and the driving movable part that are fixedly connected with described base move, described fixed part and movable part by transmission shafts to connection.
6. a kind of automatic stress testing bore holes machine according to claim 5, it is characterized in that, described motor is arranged on movable part, and fixed part is provided with screw, be connected with shaft coupling and leading screw in turn with described motor, described leading screw to be axially disposed within screw and with described screw with the use of; Or described motor is arranged on fixed part, and movable part is provided with screw, be connected with shaft coupling and leading screw in turn with described motor, described leading screw to be axially disposed within screw and with described screw with the use of.
7. a kind of automatic stress testing bore holes machine according to claim 1, it is characterized in that, described base comprises frame dish, and described frame dish is provided with longitudinal frame that fore-and-aft direction slip is arranged; The transverse strands that left and right directions slip is arranged is provided with in described longitudinal frame; Described transverse strands is connected with described fixed part by bearing pin; Described longitudinal frame is by stretching screw and longitudinal lock-screw adjustment locking; Described transverse strands is by horizontal lock-screw adjustment locking.
8. a kind of automatic stress testing bore holes machine according to claim 1, is characterized in that, described base also comprises at least 3 are arranged on described frame dish bottom for adjusting angle and leg highly;
Preferably, described leg comprises the ball rod, clamp nut, magnet base and the magnetic suction disc that are connected with described frame dish, described ball rod is connected by the locking nut arranged in frame tray bottom, and the ball head of described ball rod is coordinated by clamp nut and magnet base makes described magnet base be that multi-angle is arranged.
9. a kind of automatic stress testing bore holes machine according to claim 3, it is characterized in that, the side that described drill gun seat is fixedly connected with tooth bar is provided with swallow-tail form cutting, is provided with accepts described swallow-tail form slot in the side that described drive unit is relative with tooth bar.
10. the method for work of drilling machine as described in claim 1 ?9 any one, it is characterized in that, it is as follows that described method of work comprises step:
1) automatic stress testing bore holes machine is placed in testing sample surface;
2) drill gun adjusting automatic stress testing bore holes machine is vertical with described testing sample surface angle;
3) bore position of automatic stress testing bore holes machine is adjusted;
4) control described automatic stress testing bore holes machine actuating device, and then drive described drill gun at described testing sample surface drilling;
Described step 4) before, by engagement and then the distance that adjusts between described drill gun and testing sample surface of adjustment tooth bar and Positioning Gear;
Step 4) in, drive leading screw to coordinate with screw by motor, and then drive movable part and drill gun axially-movable;
Described step 2) in, by as follows for the method for adjustment that automatic stress testing bore holes machine is placed in testing sample surface:
1 ?1) fine position: to be slided the fine position that the transverse strands that arranges realizes drive unit and drill gun portion by slide longitudinal frame of arranging and left and right directions of adjustment fore-and-aft direction;
1 ?2) angle adjustment: realizing fine setting to drill gun alignment angle by adjusting described bearing pin, realizing vertical to testing sample surface of drill gun;
In step 1) in, also comprise the accurate adjustment to described drive unit and drill gun portion: realize the adjustment of laying angle to described drive unit and drill gun portion by the leg of the adjusting angle of adjustment rack dish bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511028406.1A CN105382295B (en) | 2015-12-30 | 2015-12-30 | A kind of automatic stress testing bore holes machine and its working method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511028406.1A CN105382295B (en) | 2015-12-30 | 2015-12-30 | A kind of automatic stress testing bore holes machine and its working method |
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| CN105382295A true CN105382295A (en) | 2016-03-09 |
| CN105382295B CN105382295B (en) | 2018-12-28 |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106914639A (en) * | 2017-04-03 | 2017-07-04 | 胡达广 | Numerical control drilling machine |
| CN107356358A (en) * | 2017-09-14 | 2017-11-17 | 中国科学院宁波材料技术与工程研究所 | A kind of workpiece residual stress detection method that drilling is driven using ultrasonic wave |
| CN107378022A (en) * | 2017-09-14 | 2017-11-24 | 中国科学院宁波材料技术与工程研究所 | A kind of drilling equipment for Blind Hole Method detection residual stress |
| CN107806948A (en) * | 2017-09-20 | 2018-03-16 | 中铝材料应用研究院有限公司 | Ultrasonic residual stress detector |
| CN108098015A (en) * | 2017-12-17 | 2018-06-01 | 哈尔滨艾拓普科技有限公司 | A kind of quick extraction electric drill component |
| CN108168755A (en) * | 2017-12-08 | 2018-06-15 | 燕山大学 | A kind of detection inside pipe wall residual stress drilling equipment and method |
| CN108555332A (en) * | 2018-07-17 | 2018-09-21 | 蚌埠市鸿鹄精工机械有限公司 | A kind of drilling machine |
| CN109434158A (en) * | 2018-12-19 | 2019-03-08 | 南京工程学院 | One kind being based on layer-by-layer drilling-strain rosette technology residual stress measurement drilling equipment |
| CN110253050A (en) * | 2019-07-20 | 2019-09-20 | 许伦姣 | A kind of portable punching tapping machine structure being precisely controlled |
| CN112345130A (en) * | 2020-11-02 | 2021-02-09 | 哈尔滨工程大学 | Stress distribution measuring device and method based on ultrasonic side waves |
| CN114459654A (en) * | 2022-02-10 | 2022-05-10 | 江苏徐工工程机械研究院有限公司 | Drilling device for testing residual stress after blind hole method welding and working method thereof |
| CN115890932A (en) * | 2022-09-19 | 2023-04-04 | 上海理工大学 | Device for measuring residual stress of hard and brittle material slice by blind hole method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106914639A (en) * | 2017-04-03 | 2017-07-04 | 胡达广 | Numerical control drilling machine |
| CN107356358A (en) * | 2017-09-14 | 2017-11-17 | 中国科学院宁波材料技术与工程研究所 | A kind of workpiece residual stress detection method that drilling is driven using ultrasonic wave |
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| CN108168755B (en) * | 2017-12-08 | 2019-11-01 | 燕山大学 | A kind of detection inside pipe wall residual stress drilling equipment and method |
| CN108168755A (en) * | 2017-12-08 | 2018-06-15 | 燕山大学 | A kind of detection inside pipe wall residual stress drilling equipment and method |
| CN108098015A (en) * | 2017-12-17 | 2018-06-01 | 哈尔滨艾拓普科技有限公司 | A kind of quick extraction electric drill component |
| CN108555332A (en) * | 2018-07-17 | 2018-09-21 | 蚌埠市鸿鹄精工机械有限公司 | A kind of drilling machine |
| CN109434158A (en) * | 2018-12-19 | 2019-03-08 | 南京工程学院 | One kind being based on layer-by-layer drilling-strain rosette technology residual stress measurement drilling equipment |
| CN110253050A (en) * | 2019-07-20 | 2019-09-20 | 许伦姣 | A kind of portable punching tapping machine structure being precisely controlled |
| CN112345130A (en) * | 2020-11-02 | 2021-02-09 | 哈尔滨工程大学 | Stress distribution measuring device and method based on ultrasonic side waves |
| CN114459654A (en) * | 2022-02-10 | 2022-05-10 | 江苏徐工工程机械研究院有限公司 | Drilling device for testing residual stress after blind hole method welding and working method thereof |
| CN114459654B (en) * | 2022-02-10 | 2023-11-07 | 江苏徐工工程机械研究院有限公司 | Blind hole method post-welding residual stress test drilling device and working method thereof |
| CN115890932A (en) * | 2022-09-19 | 2023-04-04 | 上海理工大学 | Device for measuring residual stress of hard and brittle material slice by blind hole method |
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