[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

CN218613118U - Large-scale precision numerical control machine tool protection device with high structural strength - Google Patents

Large-scale precision numerical control machine tool protection device with high structural strength Download PDF

Info

Publication number
CN218613118U
CN218613118U CN202222872131.1U CN202222872131U CN218613118U CN 218613118 U CN218613118 U CN 218613118U CN 202222872131 U CN202222872131 U CN 202222872131U CN 218613118 U CN218613118 U CN 218613118U
Authority
CN
China
Prior art keywords
fixedly connected
machine tool
control machine
structural strength
numerical control
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.)
Active
Application number
CN202222872131.1U
Other languages
Chinese (zh)
Inventor
王磊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jinan Xinfan Cnc Equipment Co ltd
Original Assignee
Jinan Xinfan Cnc Equipment Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Jinan Xinfan Cnc Equipment Co ltd filed Critical Jinan Xinfan Cnc Equipment Co ltd
Priority to CN202222872131.1U priority Critical patent/CN218613118U/en
Application granted granted Critical
Publication of CN218613118U publication Critical patent/CN218613118U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Landscapes

  • Auxiliary Devices For Machine Tools (AREA)

Abstract

The utility model relates to the technical field of precise numerical control machine tools, and discloses a large-scale precise numerical control machine tool protective device with high structural strength, wherein the inside of a connecting plate is fixedly connected with an installation and disassembly mechanism, and the front side and the rear side of a folding protective cover are both fixedly connected with a reinforcing mechanism; installation disassembly body includes runner assembly and removal subassembly, and the removal subassembly sets up in removing the subassembly top, and the runner assembly includes the work groove, and inside the connecting plate was seted up in the work groove, work inslot inner wall left side fixedly connected with motor, the first pivot of motor right side fixedly connected with, first pivot fixed surface is connected with the gear, and a side surface meshing connection half-gear is kept away from mutually to two gears, and half-gear axle center department fixedly connected with second pivot. This large-scale accurate digit control machine tool protector that structural strength is high through setting up installation disassembly body, can be with folding protection casing when needing to dismantle, can be convenient when dismantling folding protection casing from the connecting plate, the later stage of being convenient for is maintained and is changed labour saving and time saving.

Description

Large-scale precision numerical control machine tool protection device with high structural strength
Technical Field
The utility model relates to an accurate digit control machine tool technical field specifically is a large-scale accurate digit control machine tool protector that structural strength is high.
Background
The numerical control machine tool is an automatic machine tool provided with a program control system, can move and machine parts according to a programmed program, integrates the technologies of machinery, automation, computers, microelectronics and the like, solves the machining problem of complex, precise and small-batch parts, and is a flexible and high-efficiency automatic machine tool.
The safety protection device for the ultra-precise numerical control machine tool comprises a machine tool body and a protection mechanism, wherein a processing table is mounted at the top end of the machine tool body, two side faces of the machine tool body are rotatably connected with a screw, a plurality of first movable plates can be connected to the screw in a sliding mode, external threads with opposite directions are arranged on the screw, a pair of symmetrical second movable plates are connected to the screw in a threaded mode, frameworks are fixedly connected between the second movable plates and between the first movable plates, and elastic transparent films are fixedly connected between the adjacent frameworks.
In view of the above description, the inventors consider that the following problems exist:
above-mentioned utility model in the use, because the skeleton is the snap-on between first movable plate and second movable plate, in case it is very inconvenient when the harm needs to change it to appear when the skeleton, also need consume a large amount of time to remove the dismantlement simultaneously.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a large-scale accurate digit control machine tool protector that structural strength is high to solve the problem that proposes in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: a large-scale precision numerical control machine tool protection device with high structural strength comprises a large-scale precision numerical control machine tool with high structural strength and a folding protection cover, wherein connecting plates are fixedly connected to the front side and the rear side of the large-scale precision numerical control machine tool with high structural strength, mounting and dismounting mechanisms are fixedly connected to the insides of the connecting plates, and reinforcing mechanisms are fixedly connected to the front side and the rear side of the folding protection cover;
the mounting and dismounting mechanism comprises a rotating assembly and a moving assembly, and the moving assembly is arranged above the moving assembly;
the runner assembly is including working the groove, work the groove and set up inside the connecting plate, work groove quantity is two, two work groove opening each other for corresponding to set up, work inslot inner wall left side fixedly connected with motor, the first pivot of motor right side fixedly connected with, first pivot surface and work inslot portion rotate to be connected, first pivot fixed surface is connected with the gear, two a side surface meshing connection half-gear is kept away from mutually to the gear, half-gear axle center department fixedly connected with second pivot, second pivot surface and work inslot portion rotate to be connected, second pivot fixed surface is connected with the connecting block, the connecting block top articulates there is the telescopic cylinder, telescopic cylinder top fixedly connected with bull stick.
Preferably, the number of the gears is two, the gears are in meshed connection, the rotating directions of the two gears are inconsistent under the condition that the two gears are in meshed connection, and the rotating directions of the two half gears are inconsistent under the condition that the two gears and the two half gears are in meshed connection.
Preferably, the movable assembly comprises a strip square groove, the strip square groove is formed in the connecting plate, the top and the bottom of the strip square groove are both provided with openings, the front and the back of the inner wall of the strip square groove are provided with sliding grooves which are fixedly connected with long rods, the sliding grooves are slidably connected with sliding blocks and sliding blocks, the sliding blocks are fixedly connected with long rods, the surfaces of the long rods are rotatably connected with the inside of a rotating rod, the top of the rotating rod is hinged with a fixing plate, the front and the back of the foldable protective cover are provided with mounting blocks which are fixedly connected with square grooves, the tops and the bottoms of the square grooves are provided with openings, the inside of the square grooves are spliced with fixing blocks, the bottoms of the fixing blocks and the tops of the connecting plate are fixedly connected with slots, the fixing plate is close to the one side of the mounting block, the surfaces of the inserting blocks and the inside of the slots are spliced, and the movable assembly can be driven by the rotary assembly under the work of the rotary assembly, so that the foldable protective cover is mounted on the connecting plate or dismounted from the connecting plate.
Preferably, an elongated slot is formed inside the mounting block, and the surface of the insert block penetrates through the elongated slot formed inside the mounting block.
Preferably, strengthening mechanism includes the rectangular channel, the rectangular channel is seted up inside the fixed block, the equal fixedly connected with connecting seat in both sides around the folding protection casing, two fixedly connected with connecting rod between the connecting seat, connecting rod surface sliding connection has the slide, slide bottom fixedly connected with stopper, slide top and connecting seat bottom fixedly connected with spring, the spring is inside cup joints with the connecting rod surface, under strengthening mechanism moves, can make when installing the folding protection casing to carry out further reinforcement on the connecting plate to the folding protection casing.
Preferably, the number of the connecting seats is two, and the two connecting seats are arranged at the top of the mounting block.
Preferably, the top of the rectangular groove is provided with an opening, and the inside of the rectangular groove is connected with the surface of the limiting block in an inserting mode.
Compared with the prior art, the utility model provides a large-scale accurate digit control machine tool protector that structural strength is high possesses following beneficial effect:
1. this high-size accurate digit control machine tool protector of structural strength through setting up installation disassembly body, under the operation of installation disassembly body, can be with folding protection casing when needing to dismantle, can be convenient when dismantling folding protection casing from the connecting plate, the later stage of being convenient for is maintained and is changed labour saving and time saving.
2. This large-scale accurate digit control machine tool protector that structural strength is high through setting up strengthening mechanism, under the operation of the large-scale accurate digit control machine tool of high structural strength, can be to when installing folding protection casing, strengthening mechanism can further consolidate under the folding protection casing installation, also can not influence the dismantlement flow of folding protection casing under the cooperation of the large-scale accurate digit control machine tool of high structural strength when dismantling folding protection casing in the later stage simultaneously.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive labor:
FIG. 1 is a front view of the overall structure of the present invention;
FIG. 2 is a schematic view of the split structure of the present invention;
FIG. 3 is a right sectional view of the overall structure of the present invention;
FIG. 4 is a schematic view of the rotating assembly;
FIG. 5 is a schematic view of a partial structure of the moving assembly and the rotating assembly;
FIG. 6 is a schematic view of the structure of the connecting plate and the moving component;
FIG. 7 is a schematic view of a folding shield and a reinforcing mechanism;
fig. 8 is an enlarged schematic view of a portion a in fig. 7.
In the figure: 1. a connecting plate; 2. a large precision numerically controlled machine tool; 3. folding the protective cover; 4. mounting a dismounting mechanism; 41. a rotating assembly; 411. a rotating rod; 412. a telescopic cylinder; 413. a motor; 414. a first rotating shaft; 415. a half gear; 416. a gear; 417. a second rotating shaft; 418. connecting blocks; 419. a working groove; 42. a moving assembly; 421. a long rod; 422. inserting a block; 423. a slot; 424. a fixed block; 425. mounting a block; 426. a square groove; 427. a slider; 428. a fixing plate; 429. a strip-shaped square groove; 4291. a chute; 5. a reinforcement mechanism; 51. a rectangular groove; 52. a slide plate; 53. a connecting rod; 54. a limiting block; 55. a spring; 56. a connecting seat.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.
In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The utility model provides a following technical scheme:
example one
With reference to fig. 2 to 6, the large-scale precision numerical control machine tool protection device with high structural strength comprises a large-scale precision numerical control machine tool 2 with high structural strength and a folding protection cover 3, wherein connecting plates 1 are fixedly connected to the front side and the rear side of the large-scale precision numerical control machine tool 2 with high structural strength, mounting and dismounting mechanisms 4 are fixedly connected to the inside of the connecting plates 1, and reinforcing mechanisms 5 are fixedly connected to the front side and the rear side of the folding protection cover 3;
the mounting and dismounting mechanism 4 comprises a rotating component 41 and a moving component 42, the moving component 42 is arranged above the moving component 42, the rotating component 41 comprises a working groove 419, the working groove 419 is arranged inside the connecting plate 1, the number of the working grooves 419 is two, the openings of the two working grooves 419 are correspondingly arranged, the left side of the inner wall of the working groove 419 is fixedly connected with a motor 413, the right side of the motor 413 is fixedly connected with a first rotating shaft 414, the surface of the first rotating shaft 414 is rotatably connected with the inside of the working groove 419, the surface of the first rotating shaft 414 is fixedly connected with a gear 416, the two gears 416 are meshed with a half gear 415 on the surface far away from one side, the axle center of the half gear 415 is fixedly connected with a second rotating shaft 417, the surface of the second rotating shaft 417 is rotatably connected with the inside of the working groove 419, the surface of the second rotating shaft 417 is fixedly connected with a connecting block 418, the top of the connecting block 418 is hinged with a telescopic cylinder 412, and the top of the telescopic cylinder 412 is fixedly connected with a rotating rod 411, the number of the gears 416 is two, the two gears 416 are connected in a meshing manner, the moving assembly 42 comprises a long strip square groove 429, the long strip square groove 429 is arranged inside the connecting plate 1, the top and the bottom of the long strip square groove 429 are respectively provided with an opening, sliding grooves 4291 are fixedly connected to the front side and the rear side of the inner wall of the long strip square groove 429, sliding blocks 427 are slidably connected inside the sliding grooves 4291, a long rod 421 is fixedly connected between the two sliding blocks 427, the surface of the long rod 421 is rotatably connected with the inside of the rotating rod 411, a fixing plate 428 is hinged to the top of the rotating rod 411, mounting blocks 425 are fixedly connected to the front side and the rear side of the folding protective cover 3, a square groove 426 is formed inside the mounting block 425, the top and the bottom of the square groove 426 are both provided with openings, a fixing block 424 is inserted into the square groove 426, the bottom of the fixing block 424 is fixedly connected with the top of the connecting plate 1, a slot 423 is formed inside the fixing block 428, one side, which is close to the mounting block 425 is fixedly connected with an insertion block 422, the surface of the insert block 422 is inserted into the insert groove 423.
Furthermore, the installation block 425 is internally provided with a long groove, the surface of the insertion block 422 penetrates through the long groove formed in the installation block 425, and the installation and disassembly mechanism 4 is arranged, so that when the folding protective cover 3 needs to be disassembled under the operation of the installation and disassembly mechanism 4, the folding protective cover 3 can be conveniently disassembled from the connecting plate 1, the later maintenance and replacement are convenient, and time and labor are saved.
Example two
Referring to fig. 1-8, on the basis of the first embodiment, the reinforcing mechanism 5 further includes a rectangular groove 51, the rectangular groove 51 is opened inside the fixing block 424, the front and rear sides of the foldable protection cover 3 are fixedly connected with connecting seats 56, a connecting rod 53 is fixedly connected between the two connecting seats 56, the surface of the connecting rod 53 is slidably connected with a sliding plate 52, a limiting block 54 is fixedly connected to the bottom of the sliding plate 52, the top of the sliding plate 52 is fixedly connected with a spring 55 at the bottom of the connecting seat 56, the inside of the spring 55 is sleeved with the surface of the connecting rod 53, the number of the connecting seats 56 is two, and the two connecting seats 56 are arranged at the top of the mounting block 425.
Further, the top of rectangular channel 51 sets up to the opening, and rectangular channel 51 is inside to peg graft with stopper 54 surface, through setting up reinforcing mechanism 5, under the operation of the large-scale accurate digit control machine tool 2 of high structural strength, can be to when installing folding protection casing 3, reinforcing mechanism 5 can further consolidate under the 3 installation conditions of folding protection casing, also can not influence the dismantlement flow of folding protection casing 3 under the cooperation of the large-scale accurate digit control machine tool 2 of high structural strength when dismantling folding protection casing 3 in the back period simultaneously.
In practical operation, when the device is used, when a large-sized precision numerical control machine tool 2 with high structural strength is disassembled, the motor 413 is started, the motor 413 drives the first rotating shaft 414 to rotate in the working groove 419, the first rotating shaft 414 drives the gear 416 to rotate, the gear 416 can drive the gear 416 on the upper layer to be meshed and connected, at this time, when the two gears 416 rotate, the two gears 416 drive the two half gears 415 to be meshed and connected, at this time, the rotating directions of the two half gears 415 are not consistent, and at the same time, when the half gears 415 can drive the second rotating shaft 417 to rotate in the working groove 419, the second rotating shaft 417 drives the connecting block 418, the connecting block 418 drives the telescopic cylinder 412, the telescopic cylinder 412 drives the rotating rod 411, the rotating rod 411 drives the fixing plate 428, at this time, the rotating rod 411 slides on the surface of the long rod 421, and at the long rod 421 drives the sliding block 427 to slide in the connecting block 418, when the fixing plate 428 slides, under the condition that the telescopic cylinder 412 can contract or stretch, at this time, when the fixing plate 428 moves, the fixing plate 428 drives the inserting block 422 to move out of the slot 423;
when the sliding plate 52 is pulled to slide on the surface of the connecting rod 53 to extrude the spring 55, the sliding plate 52 can drive the limiting block 54 to move out of the rectangular groove 51, so that the foldable protective cover 3 can be conveniently taken out of the surface of the fixing block 424 by driving the mounting block 425, and the foldable protective cover 3 can be detached.
It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element described by the phrase "comprising a. -" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Claims (7)

1. The utility model provides a large-scale accurate digit control machine tool protector that structural strength is high, includes large-scale accurate digit control machine tool (2) of high structural strength and folding protection casing (3), its characterized in that: the front side and the rear side of the large-scale precision numerical control machine tool (2) with high structural strength are fixedly connected with connecting plates (1), the inside of each connecting plate (1) is fixedly connected with an installation and disassembly mechanism (4), and the front side and the rear side of each folding protective cover (3) are fixedly connected with reinforcing mechanisms (5);
the mounting and dismounting mechanism (4) comprises a rotating assembly (41) and a moving assembly (42), and the moving assembly (42) is arranged above the moving assembly (42);
rotating assembly (41) is including work groove (419), work groove (419) is seted up inside connecting plate (1), work groove (419) quantity is two, two work groove (419) opening is for corresponding each other to be seted up, work groove (419) inner wall left side fixedly connected with motor (413), motor (413) right side fixedly connected with first pivot (414), first pivot (414) surface and work groove (419) internal rotation are connected, first pivot (414) surface fixedly connected with gear (416), two gear (416) keep away from a side surface meshing connection semi-gear (415) mutually, semi-gear (415) axle center department fixedly connected with second pivot (417), second pivot (417) surface and work groove (419) internal rotation are connected, second pivot (417) surface fixedly connected with connecting block (418), connecting block (418) top articulates there is telescopic cylinder (412), telescopic cylinder (412) top fixedly connected with bull stick (411).
2. The large-scale precision numerical control machine tool protecting device with high structural strength as claimed in claim 1, is characterized in that: the number of the gears (416) is two, and the two gears (416) are in meshed connection.
3. The large-scale precision numerical control machine tool protection device with high structural strength as claimed in claim 1, characterized in that: remove subassembly (42) including rectangular square groove (429), inside connecting plate (1) is seted up in rectangular square groove (429), rectangular square groove (429) top and bottom all set up to the opening, the equal fixedly connected with spout (4291) in both sides around rectangular square groove (429) inner wall, spout (4291) inside sliding connection has slider (427), two fixedly connected with stock (421) between slider (427), stock (421) surface and bull stick (411) inside rotation are connected, bull stick (411) top articulates there is fixed plate (428), the equal fixedly connected with installation piece (425) in both sides around folding protection casing (3), square groove (426) have been seted up to installation piece (425) inside, square groove (426) top and bottom are the opening, inside grafting in square groove (426) has fixed block (424), fixed block (424) bottom and connecting plate (1) top fixed connection, fixed block (424) inside has seted up plug (423), fixed plate (428) are close to installation piece (425) one side fixedly connected with plug (422), plug (422) and inside plug (423) surface (423) and plug (423).
4. The large-scale precision numerical control machine tool protecting device with high structural strength as claimed in claim 3, characterized in that: an elongated slot is formed in the mounting block (425), and the surface of the insertion block (422) penetrates through the elongated slot formed in the mounting block (425).
5. The large-scale precision numerical control machine tool protecting device with high structural strength as claimed in claim 1, is characterized in that: reinforcing mechanism (5) include rectangular channel (51), inside fixed block (424) was seted up in rectangular channel (51), the equal fixedly connected with connecting seat (56) in both sides around folding protection casing (3), two fixedly connected with connecting rod (53) between connecting seat (56), connecting rod (53) sliding surface connection has slide (52), slide (52) bottom fixedly connected with stopper (54), slide (52) top and connecting seat (56) bottom fixedly connected with spring (55), spring (55) inside and connecting rod (53) surface cup joint.
6. The large-scale precision numerical control machine tool protecting device with high structural strength as claimed in claim 5, characterized in that: the number of the connecting seats (56) is two, and the two connecting seats (56) are arranged at the top of the mounting block (425).
7. The large-scale precision numerical control machine tool protecting device with high structural strength as claimed in claim 5, characterized in that: the top of the rectangular groove (51) is provided with an opening, and the inside of the rectangular groove (51) is connected with the surface of the limiting block (54) in an inserting mode.
CN202222872131.1U 2022-10-31 2022-10-31 Large-scale precision numerical control machine tool protection device with high structural strength Active CN218613118U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202222872131.1U CN218613118U (en) 2022-10-31 2022-10-31 Large-scale precision numerical control machine tool protection device with high structural strength

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202222872131.1U CN218613118U (en) 2022-10-31 2022-10-31 Large-scale precision numerical control machine tool protection device with high structural strength

Publications (1)

Publication Number Publication Date
CN218613118U true CN218613118U (en) 2023-03-14

Family

ID=85474687

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202222872131.1U Active CN218613118U (en) 2022-10-31 2022-10-31 Large-scale precision numerical control machine tool protection device with high structural strength

Country Status (1)

Country Link
CN (1) CN218613118U (en)

Similar Documents

Publication Publication Date Title
CN218613118U (en) Large-scale precision numerical control machine tool protection device with high structural strength
CN215433202U (en) Fixing clamp for processing plastic steel glass door and window
CN216380242U (en) Quickly-built wallboard structure for assembly type building
CN211991700U (en) Batch rubber gasket quick-sleeving device
CN213407871U (en) Section bar extrusion die alkali wash waste liquid recycle device
CN220194187U (en) Double-screw of automatic slag extractor
CN111546116B (en) Stop device of high accuracy digit control machine tool cutting stroke
CN212311523U (en) Numerical control machine tool sweeps processing apparatus
CN113931376A (en) Quickly-built wallboard structure for assembly type building
CN213042540U (en) Structure is assembled to model for architectural design
CN112276663A (en) Safety protection door for diamond cone numerical control lathe
CN219308041U (en) Filter structure for hydrogen peroxide solution preparation
CN218487239U (en) Precision machining square lathe tool
CN221967498U (en) Numerical control machine tool scraps collection device
CN217648604U (en) Moulding device is used in ceramic machining
CN220331810U (en) Injection mold is used in refrigerator working of plastics processing convenient to change
CN215147149U (en) CNC digit control machine tool automatic system
CN219336952U (en) Tool magazine isolation device of numerical control machine tool machining center
CN218700278U (en) Tool bit convenient to detach for diamond machining
CN219598160U (en) Deep hole plane drilling machine
CN216178874U (en) Special digit control machine tool of precision tool
CN219554150U (en) TypeC left and right shielding case assembly machine
CN117381461B (en) Intelligent operation panel is used in digit control machine tool processing
CN218951839U (en) Extrusion impregnating machine with positive and negative pressure double screws
CN209504567U (en) A kind of diamond thin-wall drill bit

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant