CN107252904B - A kind of drilling equipment of blind hole measuring residual stress - Google Patents
A kind of drilling equipment of blind hole measuring residual stress Download PDFInfo
- Publication number
- CN107252904B CN107252904B CN201710434844.0A CN201710434844A CN107252904B CN 107252904 B CN107252904 B CN 107252904B CN 201710434844 A CN201710434844 A CN 201710434844A CN 107252904 B CN107252904 B CN 107252904B
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- drill
- drill bit
- drilling
- residual stress
- bushing
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B49/00—Measuring or gauging equipment on boring machines for positioning or guiding the drill; Devices for indicating failure of drills during boring; Centering devices for holes to be bored
- B23B49/02—Boring templates or bushings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2270/00—Details of turning, boring or drilling machines, processes or tools not otherwise provided for
- B23B2270/48—Measuring or detecting
- B23B2270/483—Measurement of force
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling And Boring (AREA)
Abstract
The invention discloses a kind of drilling equipments of blind hole measuring residual stress, including bottom plate, column, sliding lock set, positioning bolt, outer guide rod, inner guide, split lock tube, electric drill, positioning bolt, drill bushing, wherein: column is fixed on pedestal, outer guide rod and inner guide are mobile by sliding lock set respectively, and drill bushing moves through roller gear by split lock tube and rotates；Sliding lock set is mounted on upright bar and inner guide and is fixed on a certain position by positioning bolt；Split lock tube consists of two parts, and one end is connected by pin, and the other end is fixed by fastening screw, and in dual lock set top installation positioning bolt to realize that any position positions；The drilling equipment of blind hole measuring residual stress of the present invention, bit location is adjusted by positioning bolt and roller gear, and need not be fitted and fixed on tested part, there is biggish flexibility ratio, next drilling process can be entered easily, to improve work efficiency.
Description
Technical field
The present invention relates to a kind of drilling equipment, the drilling equipment of specifically a kind of blind hole measuring residual stress.
Background technique
Main Related product is that the blind hole measuring residual stress ZDL-II of Zhengzhou Research Institute of Mechanical Engineering is bored currently on the market
Aperture apparatus is needed to be fixed on and be punched on the flat surface of part, and needs to fasten with glue the drilling cramp of drilling equipment
Piece surface to be measured can not drill to the biggish piece surface of depth, while borehole accuracy is difficult to Efficient Support.
A kind of " drilling equipment of Blind Hole Technique for Measuring residual stress " (publication number: CN204565182U) of Wei Jun et al. invention
It drills using including parts such as disk suction base, I-shaped bracket, back-electromagnetic force block, guide sleeve and drills, though the invention
So solves the precision problem of drilling-hole positioning device, but the drilling problems of Surface Structures complexity and the big part of depth are still not
It is able to satisfy requirement.
The brill of " a kind of boring method residual stress measurement system " (publication number: CN106289582A) of Chen Huaining et al. invention
Aperture apparatus part is made of adjustable speed electric hand drill, tool microscope, drilling rod, guide cylinder, magnetic support pedestal etc., though the invention
It so solves the problems, such as the positioning of drilling-hole positioning device and borehole accuracy, but the drilling of the big and narrow narrow part of case depth is asked
Topic is not able to satisfy requirement.
The drilling equipment of existing blind hole measuring residual stress is preferably fixed and is drilled for heavy parts, but for
Small complex constitutional detail, it is fixed just extremely difficult.This structure has the disadvantage that:
1. original drilling equipment is fixed extremely difficult or can not fix, this is resulted in for the part of labyrinth
Disadvantage that is inaccurate or can not punching is punched, to increase the error of subsequent residual stress measurement；
2. original drilling equipment, pedestal need glue to be bonded on part, the trace that glue leaves is extremely difficult clearly to be fallen,
This makes subsequent 3-D scanning part model bring great adverse effect, or even is unable to complete the three-dimensional of some precision components
Size comparison's work；
3. original drilling equipment cannot punch deep and narrow structure, which limits its application ranges.
Summary of the invention
In view of the above shortcomings of the prior art, the purpose of the present invention is to provide a kind of brills of blind hole measuring residual stress
Aperture apparatus, to solve the problems mentioned in the above background technology.
To achieve the above object, the invention provides the following technical scheme:
A kind of drilling equipment of blind hole measuring residual stress, comprising: bottom plate, column, sliding lock set, positioning bolt, outer
Guide rod, inner guide, split lock tube, electric drill, drill bushing, drill bit and drill bit fixed link, in which:
The column is fixed on the bottom plate；The quantity of the column is at least four；
The outer guide rod is moved by the sliding lock set along the uprights vertical, and continuous by the positioning bolt
It is positioned at any height on the column；
The inner guide, along the outer guide rod horizontal movement, and is connected by the sliding lock set by the positioning bolt
It is continuous to be positioned at any horizontal position on the outer guide rod；
The drill bushing realizes horizontal displacement along the inner guide by the split lock tube, and is connected by the positioning bolt
It is continuous to be positioned at any horizontal position on the inner guide, while the axial direction turn of roller gear that the drill bushing is arranged by its both ends
It moves and passes through the gear opened on the inside of roller gear and split lock tube and engage that the realization drill bushing is discontinuous to be positioned at any inclination angle
Degree；
Drill bit fixed link is installed, the upper end of the drill bit fixed link is connect with electric drill, and the drill bit is solid in the drill bushing
The drill bit is installed in the lower end of fixed pole, and the electric drill drives the drill bit rotation to reach drilling by the drill bit fixed link
Purpose, by the outer guide rod along the vertical movement of the column, the inner guide along the outer guide rod horizontal movement, described
Split lock tube is rotated along the horizontal displacement of the inner guide, the axial of the roller gear and its internal tooth with the split lock tube
The engagement of wheel cooperates, so that there are three one-movement-freedom-degree and a rotary freedoms for drill bushing tool, that is, realizes the drill bit
Three one-movement-freedom-degrees and a rotary freedom movement.
Preferably, the inside of the drill bushing is equipped with bushing, and bit sub is equipped in bushing, installs drill bit inside bit sub
The upper end of fixed link, drill bit fixed link is connect with electric drill, and the lower end of drill bit fixed link has been connected through a screw thread collet, collet inner clip
Hold drill bit；Bit sub rotation in the electric drill driving lining reaches drilling to drive drill bit rotation by drill bit fixed link
Purpose.
Preferably, depth of the height limiter to control drilling is provided on the drill bushing.
It is highly preferred that the height limiter includes: limit for height piece, tabletting and lasso, in which:
The lasso is set to the outside of bit sub, and lasso Slideslip and passes through bolt and position outside bit sub；On drill bushing
Outer wall is held to be equipped with threaded hole, tabletting is equipped with external screw thread, and tabletting is fixed in the threaded hole on drill bushing by its external screw thread；Before drilling
It is manually inserted into limit for height piece between lasso and tabletting and fixes lasso, the thickness of limit for height piece is drilling depth, and when drilling takes
Limit for height piece out pushes electric drill that drill bit is made to pierce piece surface until lasso and tabletting contact, and drilling terminates.
It is highly preferred that there are four the threaded holes and being evenly arranged on the outer wall of the drill bushing upper end, in each threaded hole respectively
One positioning bolt is installed, bolt is transposed to finely tune the bushing locations in drill bushing by turn, is being drilled to finely tune drill bit
The orientation of front, rear, left and right on surface, so that the boring point selected on drill bit alignment tested part.
Preferably, the length of the drill bit fixed link is series variation, for different depth and different stenosis
Piece surface drill.
Preferably, the split lock tube is by pin twisting, and is fastened by bolts.
Preferably, the bottom plate is equipped with part fixing seat, for fixing tested part.
Preferably, the every column is bolted on the bottom plate.
Preferably, the both ends of the every outer guide rod are bolted with sliding lock set.
Preferably, the both ends of the every inner guide are bolted with sliding lock set.
In the present invention, the drill bushing is mobile in three directions by column, outer guide rod, inner guide, split lock tube, and passes through
Gear engagement is discontinuous to be positioned at a certain tilt angle, and drill bushing does not connect with the surveyed part in lower section, is fixed on without by glue
On part.
Compared with prior art, the beneficial effects of the present invention are:
1. in the present invention drill bushing moved by parts such as column, outer guide rod, inner guide, split lock tubes along three directions and
It is rotated around a direction, and drill bushing is not connect with the surveyed part in lower section, is fixed on part without by glue, to reduce
The drilling difficulty of small complex part, improves the borehole accuracy of drilling equipment；
2. drilling equipment of the present invention is not secured on surveyed part, glue tracks will not be left in piece surface,
The size distortion and damaged surfaces of part will not be brought because of the mechanical oscillation of electric drill in drilling simultaneously；
3. drilling equipment of the present invention has biggish flexibility ratio, it is only necessary to which adjustment bolt can realize the shifting of drill bit
Move position, next drilling process can be entered easily, to improve work efficiency；
4. drilling equipment of the present invention is not secured on tested part, while having longer drill bit fixed link,
It can drill to deep and narrow piece surface, to expand the measurement range of residual stress.
Detailed description of the invention
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other feature of the invention,
Objects and advantages will become more apparent upon:
Fig. 1 is the device perspective view of one embodiment of the present invention；
Fig. 2 is the device cross-sectional view of one embodiment of the present invention；
Fig. 3 is the drill bushing of one embodiment of the present invention and the structural schematic diagram of split lock tube；
In figure:
The outer guide rod of 1- bottom plate, 2- column, 3- sliding lock set, 4- positioning bolt, 5- bolt, 6-, 7- inner guide, 8- pin,
The split lock tube of 9-, 10- bolt, 11 electric drills, 12- bit sub, 13- limit for height piece, 14- tabletting, 15- positioning bolt, 16- drill bushing, 17-
Drill bit, 18- drill bit fixed link, 19- lasso, 20- bushing, 21- collet, 22- roller gear.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
As shown in FIG. 1 to 3, a kind of drilling equipment of blind hole measuring residual stress, comprising: bottom plate 1, column 2, sliding
Lock tube 3, positioning bolt 4, bolt 5, outer guide rod 6, inner guide 7, pin 8, split lock tube 9, bolt 10, electric drill 11, bit sub 12,
Limit for height piece 13, tabletting 14, positioning bolt 15, drill bushing 16, drill bit 17, drill bit fixed link 18, lasso 19, bushing 20,21 and of collet
Roller gear 22；
As shown in Figure 1, being drilled with counter sink on the bottom plate 1 for fixing entire drilling equipment and tested part；
The column 2 has 4, and 4 root post, 2 two rows, two column are arranged in parallel, and each column 2 is solid by four bolts 5 respectively
It is scheduled on the bottom plate 1；
The outer guide rod 6 has two, and the both ends of every outer guide rod 6 pass through bolt 5 respectively and connect with a sliding lock set 3,
Sliding lock set 3 is mounted on column 2 and is provided on each sliding lock set 3 positioning bolt 4, and sliding lock set 3 is vertical along column 2
The mobile vertical displacement to realize outer guide rod 6 in direction, and by 4 consecutive tracking of positioning bolt in height and position a certain on column 2；
The inner guide 7 has two, and the both ends of every inner guide 7 pass through bolt respectively and connect with a sliding lock set 3, sliding
Dynamic lock tube 3 is mounted on outer guide rod 6 and is provided on each sliding lock set 3 positioning bolt 4, and sliding lock set 3 is along outer 6 water of guide rod
The horizontal displacement of inner guide 7 square is realized to mobile, and by 4 consecutive tracking of positioning bolt in certain level on outer guide rod 6
Position；
As shown in Figure 1, Figure 3, the split lock tube 9 there are two and be separately mounted on an inner guide 7；Each dual lock
Set 9 is made of two halves, and outside is connected by the connection of pin 8, inside by bolt 10；The inside of two split lock tubes 9 is equal
It is provided with internal gear, the both ends of drill bushing 16 are respectively equipped with roller gear 22, and internal gear is engaged with roller gear 22, and two described right
Set 9 of unlocking is moved along the horizontal direction of inner guide 7 drives 16 horizontal displacement of drill bushing, while drill bushing 16 passes through the axis of roller gear 22
To rotating and engage with the internal gear of split lock tube 9 that realization is discontinuous to be positioned at a certain tilt angle by roller gear 22.
As shown in Fig. 2, the inside of the drill bushing 16 is equipped with bushing 20, the inside of bushing 20 is equipped with bit sub 12, bores
Drill bit fixed link 18 is installed, the lower end of drill bit fixed link 18 is connected through a screw thread collet 21, clamping in collet 21 in head handle 12
The upper end of drill bit 17, drill bit fixed link 18 connects electric drill 11, can be with the bit sub inside driving lining 20 by manipulation electric drill 11
12 rotations, reach drilling purpose；Meanwhile drill bushing 16 is installed in the outside of bit sub 12, drill bushing 16 is lower to be inserted into limit for height piece 13, before drilling
Drill bit 17 is set to be directed at the drill bushing 16 at foil gauge center and 12 outside of fixed drill bit handle, extraction limit for height piece 13 can start to drill, bore
The depth in hole is equal to the thickness of limit for height piece 13.
The sliding lock set 3 realizes vertically moving for drill bit 17, the sliding lock set along the movement of 1 vertical direction of column
3 move along the horizontal direction of outer guide rod 6 and realize moving horizontally for drill bit 17, water of two split lock tubes 9 along inner guide 7
Square realize moving horizontally for drill bit 17 to movement, the drill bushing 16 by the axial rotation of roller gear 22 and its with it is split
The engagement cooperation of the internal gear of lock tube 9 realizes the rotary freedom of drill bit 17.
As shown in Figure 1 and Figure 2, the lasso 19 can the outer Slideslip of bit sub 12 and by with positioning 15 model of bolt
Identical bolt positioning, the tabletting 14 is fixed in the threaded hole of 16 upper end of drill bushing by its external screw thread, in lasso before drilling
It is manually inserted into limit for height piece 13 between 19 and tabletting 14 and fixes lasso 19, the thickness of limit for height piece 13 is drilling depth, drilling
When take out limit for height piece 13, grasp and electric drill 11 pushed so that drill bit 17 is pierced piece surface until lasso 19 and tabletting 14 connect
Touching, drilling terminate.
As a preferred embodiment, the length of the drill bit fixed link 18 is series variation, for deep and narrow
Narrow piece surface drills, to expand the measurement range of residual stress.
As shown in Figure 1, uniformly distributed on 16 outer wall of drill bushing there are four threaded holes, often as a preferred embodiment
A positioning bolt 15 is separately installed in a threaded hole, the positioning bolt 15 is used to finely tune the position of bushing 20 in drill bushing 16
It sets, so that the orientation of the front, rear, left and right on boring surface of drill bit 17 is finely tuned, so that the drilling selected on 17 alignment element of drill bit
Point.
As a preferred embodiment, it is provided with part fixing seat on the bottom plate 1, for fixing tested part.
The working principle of the drilling equipment of the blind hole measuring residual stress is:
The drilling equipment can fast move outer 6 He of guide rod by sliding lock set 3, split lock tube 9 and positioning bolt 4
The position of inner guide 7, during mobile random component, the drill bit 17 of 16 lower end of drill bushing and the electric drill 11 of upper end are not necessarily to change,
Positioning bolt 4 need to only be adjusted when replacing bore position, replaced simple and fast, and need not be fixed using glue, not with it is tested
Feature contacts avoid the damage to tested part surface；Mobile outer guide rod 6, inner guide 7, one in split lock tube 9 every time
Primary drilling can be completed, only just three is needed to move together when bore position variation is larger, to substantially increase brill
Hole efficiency；The internal gear of 9 inside of split lock tube is engaged with the roller gear 22 at 16 both ends of drill bushing, by the engagement of adjustment gear come
Realize the rotation of drill bushing 16, this can drill to complicated curved inclined surface, greatly expand drilling range and residual stress
Measure the range of surface region；Bit sub 12 is driven by electric drill 11, rotates it in bushing 20, before drilling under lasso 19
Insertion limit for height piece 13 controls drilling depth, and when drilling takes out limit for height piece 13, when on the lasso 19 and drill bushing 16 outside bit sub 12
When the tabletting 14 at end contacts, drilling is finished, and drilling depth is equal to the thickness of limit for height piece 13；Tested part is solid by part fixing seat
It is scheduled on bottom plate 1, without moving repeatedly tested part in boring procedure, to improve work efficiency.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (10)
1. a kind of drilling equipment of blind hole measuring residual stress, it is characterised in that: including bottom plate (1), at least four columns
(2), sliding lock set (3), positioning bolt (4), at least two outer guide rods (6), at least two inner guides (7), split lock tube (9),
Electric drill (11), drill bushing (16), drill bit (17) and drill bit fixed link (18), in which: the column (2) is fixed on the bottom plate
(1) on；
The outer guide rod (6) is moved vertically by the sliding lock set (3) along the column (2), and passes through the positioning spiral shell
Bolt (4) consecutive tracking is in any height on the column (2)；
The inner guide (7) along outer guide rod (6) horizontal movement, and passes through the positioning by the sliding lock set (3)
Bolt (4) consecutive tracking is in any horizontal position on the outer guide rod (6)；
The drill bushing (16) realizes horizontal displacement along the inner guide (7) by the split lock tube (9), and passes through the positioning
Bolt (4) consecutive tracking is in any horizontal position on the inner guide (7), while the drill bushing (16) is arranged by its both ends
The internal gear opened on the inside of the axial rotation of roller gear (22) and the roller gear (22) and the split lock tube (9) engages
It realizes that the drill bushing (16) is discontinuous and is positioned at a certain tilt angle；
It is equipped with drill bit fixed link (18) in the drill bushing (16), the upper end and electric drill (11) of the drill bit fixed link (18) are even
It connects, the drill bit (17) is installed in the lower end of the drill bit fixed link (18), and the electric drill (11) passes through the drill bit fixed link
(18) drive the drill bit (17) rotation to realize drilling, by the outer guide rod (6) along the column (2) vertical movement,
The inner guide (7) along the horizontal movement of the outer guide rod (6), the split lock tube (9) along the inner guide (7) horizontal position
It moves, the axial rotation of the roller gear (22) and its engage cooperation with the internal gear of the split lock tube (9), so that described
There are three one-movement-freedom-degree and a rotary freedoms for drill bushing (16) tool, that is, realize three one-movement-freedom-degrees of the drill bit (17)
It is moved with a rotary freedom.
2. a kind of drilling equipment of blind hole measuring residual stress according to claim 1, it is characterised in that: the drill bushing
(16) inside is equipped with bushing (20), is equipped with bit sub (12) in bushing (20), and installation drill bit is solid inside bit sub (12)
Fixed pole (18), the lower end of drill bit fixed link (18) have been connected through a screw thread collet (21), and drill bit (17) is clamped in collet (21)；
Bit sub (12) rotation in electric drill (11) driving lining (20), to pass through drill bit fixed link (18) driving drill bit (17)
Rotation.
3. a kind of drilling equipment of blind hole measuring residual stress according to claim 2, it is characterised in that: in the brill
Depth of the height limiter to control drilling is provided on set (16).
4. a kind of drilling equipment of blind hole measuring residual stress according to claim 3, it is characterised in that: the limit for height
Device includes: limit for height piece (13), tabletting (14) and lasso (19), in which:
The lasso (19) is set to the outside of bit sub (12), and lasso (19) is in the outer Slideslip of bit sub (12) and passes through bolt
Positioning；Drill bushing (16) upper end outer wall is equipped with the internal thread hole of axial direction, and tabletting (14) is equipped with external screw thread, and tabletting (14) passes through it
External screw thread is fixed in the internal thread hole on drill bushing (16)；Limit for height piece is inserted into before drilling between lasso (19) and tabletting (14)
(13) it and fixes lasso (19), the thickness of limit for height piece (13) is drilling depth, and when drilling takes out limit for height piece (13), pushes electricity
Boring (11) makes drill bit (17) pierce piece surface until lasso (19) and tabletting (14) contact.
5. a kind of drilling equipment of blind hole measuring residual stress according to claim 4, it is characterised in that: the drill bushing
(16) there are four the radial screw bores of uniformly distributed radial direction on the outer wall of upper end, are separately installed with one in each radial screw bore
It transposes bolt (15), by the way that positioning bolt (15) is described in turn to finely tune bushing (20) position in drill bushing (16), to finely tune
The orientation of drill bit (17) front, rear, left and right on boring surface, so that the boring point selected on drill bit (17) alignment tested part.
6. a kind of drilling equipment of blind hole measuring residual stress according to claim 1-5, it is characterised in that:
The length of the drill bit fixed link (18) be series variation, for the piece surface to different depth and different stenosis into
Row drilling.
7. a kind of drilling equipment of blind hole measuring residual stress according to claim 1-5, it is characterised in that:
The split lock tube (9) fastens by pin (8) twisting, and by bolt (10).
8. a kind of drilling equipment of blind hole measuring residual stress according to claim 1-5, it is characterised in that:
It is provided with part fixing seat on the bottom plate (1), for fixing tested part.
9. a kind of drilling equipment of blind hole measuring residual stress according to claim 1-5, it is characterised in that:
The every column (2) is bolted on the bottom plate (1).
10. a kind of drilling equipment of blind hole measuring residual stress according to claim 1-5, feature exist
In: the both ends of the every outer guide rod (6) are bolted with sliding lock set (3)；
The both ends of the every inner guide (7) are bolted with sliding lock set (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710434844.0A CN107252904B (en) | 2017-06-10 | 2017-06-10 | A kind of drilling equipment of blind hole measuring residual stress |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710434844.0A CN107252904B (en) | 2017-06-10 | 2017-06-10 | A kind of drilling equipment of blind hole measuring residual stress |
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| CN107252904A CN107252904A (en) | 2017-10-17 |
| CN107252904B true CN107252904B (en) | 2019-01-01 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN108858483A (en) * | 2018-06-28 | 2018-11-23 | 安徽省欧球信息技术有限公司 | A kind of efficient furniture processing plank drilling equipment |
| CN109333083B (en) * | 2018-08-22 | 2023-10-03 | 四川大学 | Residual stress detection auxiliary device for non-ferromagnetic parts |
| CN109175433B (en) * | 2018-10-22 | 2020-12-29 | 哈尔滨工程大学 | Steerable drilling machine with lifting structure |
| CN111660377A (en) * | 2020-06-23 | 2020-09-15 | 刘杨 | Dull and stereotyped optional position radian line automatic measurement draws perforating device |
| CN114700526B (en) * | 2022-06-06 | 2022-09-23 | 徐州中车轨道装备有限公司 | Perforating device is used in processing of track traffic braking system altitude valve |
| CN117226142B (en) * | 2023-11-14 | 2024-01-16 | 湘潭永达机械制造股份有限公司 | Major diameter shield body processing equipment |
| CN118291736B (en) * | 2024-06-05 | 2024-09-27 | 纽威数控装备(苏州)股份有限公司 | Machine tool foundation large piece residual stress control method and drilling device |
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| FR2519281A1 (en) * | 1982-01-07 | 1983-07-08 | Dieu Andre | Stand for portable electric drill - uses bars connected to sleeved frame to allow motor to slide at any angle |
| DE4335146C1 (en) * | 1993-10-15 | 1994-12-01 | Daimler Benz Ag | Cartesian manipulator |
| CN102941512A (en) * | 2011-11-08 | 2013-02-27 | 杨东佐 | Numerical control equipment |
| CN202512021U (en) * | 2012-04-11 | 2012-10-31 | 西北工业大学 | Three-dimensional residual stress detecting hole drilling instrument |
| CN104416183A (en) * | 2013-08-26 | 2015-03-18 | 波音公司 | 5-Axis hole transfer system and method |
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|---|---|
| CN107252904A (en) | 2017-10-17 |
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