CN111468899A - Laser hardening process for thread surface of trenchless drill rod joint - Google Patents
Laser hardening process for thread surface of trenchless drill rod joint Download PDFInfo
- Publication number
- CN111468899A CN111468899A CN202010315059.5A CN202010315059A CN111468899A CN 111468899 A CN111468899 A CN 111468899A CN 202010315059 A CN202010315059 A CN 202010315059A CN 111468899 A CN111468899 A CN 111468899A
- Authority
- CN
- China
- Prior art keywords
- carriage
- drill rod
- trenchless
- rack
- drill
- 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.)
- Pending
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/06—Surface hardening
- C21D1/09—Surface hardening by direct application of electrical or wave energy; by particle radiation
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/22—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for drills; for milling cutters; for machine cutting tools
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/042—Threaded
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention discloses a trenchless drill pipe double-end finish turning machine and a process for realizing laser hardening of a thread surface by utilizing the finish turning machine. The trenchless drill rod double-head finish turning machine is used for finish machining of a drill rod and comprises a rack, wherein a material collecting disc is arranged on one side of the rack; the machining part is slidably mounted on the rack and located at two ends of the rack, and comprises a first carriage, a second carriage and a third carriage which are sequentially arranged from top to bottom, the third carriage is connected with the rack and can slide along the direction of laying of the drill rods, the second carriage is slidably mounted on the third carriage and has the same movement direction as the third carriage, the first carriage is slidably mounted on the second carriage and can move along the direction of laying of the vertical drill rods, and a cutter for turning and milling the drill rods is further arranged on the first carriage. The invention can simultaneously process two ends of the drill rod, greatly save the processing time, save the labor, reduce the comprehensive production cost and further facilitate the simultaneous hardening of threads at two ends.
Description
Technical Field
The invention relates to the technical field of production and manufacturing of trenchless drilling tools, in particular to a laser hardening process for a thread surface of a trenchless drill rod joint.
Background
At present, the surface hardening of the thread of the drill rod on the market is carried out by a salt bath nitriding process by using a liquid nitriding furnace, and the hardening method has the following defects: 1. the environmental pollution is large, and the investment of environmental protection equipment is large. 2, the nitriding furnace is an open nitriding process, and the energy consumption is high due to large temperature loss. 3, the loss of the liquid nitride salt is large. 4, the nitriding temperature is about 550 ℃, and potential safety hazards exist at high temperature. 5, the nitriding speed is slow, the time is long, and 3.5 hours per furnace are needed. 6, the salt cleaning cost of the surface salt after salt bath nitridation is high.
Disclosure of Invention
The present invention is directed to a process for enhancing thread hardening in response to the above-mentioned deficiencies of the prior art.
In order to achieve the purpose, the invention discloses a trenchless drill pipe double-end finish turning machine and a process for achieving laser hardening of a thread surface by utilizing the finish turning machine. The following technical scheme is adopted:
a trenchless drill pipe double-ended finishing block for drill pipe finishing, comprising:
the device comprises a rack, wherein a material collecting disc is arranged on one side of the rack;
the machining part is slidably mounted on the rack and located at two ends of the rack, and comprises a first carriage, a second carriage and a third carriage which are sequentially arranged from top to bottom, the third carriage is connected with the rack and can slide along the direction of laying of the drill rods, the second carriage is slidably mounted on the third carriage and has the same movement direction as the third carriage, the first carriage is slidably mounted on the second carriage and can move along the direction of laying of the vertical drill rods, and a cutter for turning and milling the drill rods is further arranged on the first carriage. The first carriage is movable relative to the second carriage, the second carriage is movable relative to the third carriage, and fine turning machining precision can be effectively controlled through grading linkage.
The invention further provides a further improvement of the trenchless drill rod double-head finish turning machine, wherein a cutter is fixedly arranged on a first carriage through a clamp.
The invention further provides a double-head finish turning device for a non-excavation drill rod, which is characterized in that a clamp comprises
The driving part comprises a motor, and the output end of the motor is connected with the base;
the clamping part comprises a clamping piece and a pressing piece, the clamping piece is rotatably installed above the base, the pressing piece is fixedly installed above the clamping piece, a gap is reserved between the pressing piece and the clamping piece, a through hole penetrating through the pressing piece is formed in the pressing piece body in a matrix mode, and a bolt is inserted in the through hole. The clamping piece capable of rotating relative to the base is arranged, so that the structure is reasonable, and the forward and reverse directions of the cutter can be switched at any angle; through having seted up the through-hole through the matrix on compressing tightly a main part, can install many cutters between the holder and compress tightly the piece, can realize the switching of different models cutter in the course of working.
The invention further improves the trenchless drill rod double-end finish turning machine, and the inner wall of the through hole is provided with an internal thread matched with the bolt. The utility model is convenient for dismounting and mounting various types of cutters.
The invention further provides a further improvement of the trenchless drill rod double-head finish turning machine, wherein a pressing piece is fixedly connected with a clamping piece through an upright post. It is rational in infrastructure and compress tightly between piece and the holder more stable.
The invention further provides a further improvement of the trenchless drill rod double-head finish turning machine, wherein the clamping piece and the pressing piece are the same in shape.
The invention further provides a further improvement of the trenchless drill rod double-head finish turning machine, wherein a first carriage, a second carriage and a third carriage are respectively connected in a sliding mode through dovetail grooves. The structure is reasonable, and the first carriage, the second carriage and the third carriage cannot generate vertical displacement by arranging the dovetail grooves.
The laser hardening process for the thread surface of the trenchless drill rod joint comprises the following steps:
firstly, the trenchless drill rod double-end finish turning is used for carrying out thread turning on two ends of the drill rod,
secondly, cleaning the surface of the screw thread after turning by using a cleaning agent,
thirdly, standing and drying at normal temperature,
fourthly, driving the drill rod to rotate, coating hardening media on the threads at the two ends of the drill rod,
fifthly, carrying out laser hardening treatment on the rotating thread,
sixthly, performing polished thread surface treatment after standing for a period of time,
seventhly, marking the middle part of the drill rod body by laser,
and eighthly, respectively putting the two thread ends of the drill rod into a nitriding furnace for final hardening, standing and then molding.
Compared with the prior art, the invention has the beneficial effects that:
1. the first carriage is movable relative to the second carriage, the second carriage is movable relative to the third carriage, and fine turning machining precision can be effectively controlled through grading linkage.
2. The clamping piece capable of rotating relative to the base is arranged, so that the structure is reasonable, and the forward and reverse directions of the cutter can be switched at any angle; through having seted up the through-hole through the matrix on compressing tightly a main part, can install many cutters between the holder and compress tightly the piece, can realize the switching of different models cutter in the course of working.
3. Through the arrangement of the dovetail groove, the first carriage, the second carriage and the third carriage cannot generate vertical displacement.
4. The invention adopts laser hardening and subsequent nitriding furnace hardening process, ensures the hardening strength of the thread surface, improves the smoothness of the thread surface and shortens the hardening time.
Drawings
FIG. 1 is a schematic view of the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
fig. 3 is a schematic view of a fixture.
The automatic feeding device comprises a machine frame 1, a material collecting disc 11, a processing part 2, a first carriage 21, a second carriage 22, a third carriage 23, a clamp 3, a motor 31, a base 32, a clamping piece 33, a pressing piece 34, a bolt 341 and a stand column 35.
Detailed Description
The present invention is further illustrated by the following detailed description, which is to be construed as merely illustrative and not limitative of the remainder of the disclosure, and modifications and variations such as those ordinarily skilled in the art are intended to be included within the scope of the present invention as defined in the appended claims.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "vertical", "peripheral surface" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are conventionally placed when used, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or the element to which the present invention is directed must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the term "vertical" or the like does not imply that the components are required to be absolutely horizontal or overhanging, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1-3, a trenchless drill pipe double-ended finishing lathe for drill pipe finishing, comprising:
the device comprises a frame 1, wherein a material collecting disc 11 is arranged on one side of the frame 1;
the machining part 2 is slidably mounted on the rack 1 and located at two ends of the rack 1, and comprises a first carriage 21, a second carriage 22 and a third carriage 23 which are sequentially arranged from top to bottom, the third carriage 23 is connected with the rack 1 and can slide along the drill rod laying direction, the second carriage 22 is slidably mounted on the third carriage 23 and is the same as the third carriage 23 in the moving direction, the first carriage 21 is slidably mounted on the second carriage 22 and can move along the direction perpendicular to the drill rod laying direction, and a cutter for turning and milling the drill rod is further arranged on the first carriage 21. The first carriage 21 moves relative to the second carriage 22, the second carriage 22 moves relative to the third carriage 23, and the finish turning precision can be effectively controlled through grading linkage.
Preferably, the tool is fixedly mounted to the first carriage 21 by means of a clamp 3.
Preferably, the clamp 3 comprises
The driving part comprises a motor 31, and the output end of the motor 31 is connected with a base 32;
the clamping part comprises a clamping piece 33 and a pressing piece 34, the clamping piece 33 is rotatably installed above the base 32, the pressing piece 34 is fixedly installed above the clamping piece 33, a gap is reserved between the pressing piece 34 and the clamping piece 33, through holes penetrating through the pressing piece 34 are formed in the main body of the pressing piece 34 in a matrix mode, and bolts 341 are inserted into the through holes. The clamping piece 33 capable of rotating relative to the base 32 is arranged, so that the structure is reasonable, and the forward and reverse directions of the cutter can be switched at any angle; through having seted up the through-hole through the matrix on compressing tightly 34 main parts, can install many cutters between holder 33 and compressing tightly 34, can realize the switching of different model cutters in the course of working.
Preferably, the inner wall of the through-hole is formed with an internal thread to be matched with the bolt 341. The utility model is convenient for dismounting and mounting various types of cutters.
Preferably, the pressing member 34 and the clamping member 33 are fixedly connected by a pillar 35. It is rational in infrastructure and compress tightly between piece 34 and holder 33 more stable.
Preferably, the clamping member 33 is the same shape as the pressing member 34.
Preferably, the first carriage 21, the second carriage 22 and the third carriage 23 are slidably connected through dovetail grooves, respectively. The structure is reasonable, and the first carriage 21, the second carriage 22 and the third carriage 23 cannot generate vertical displacement by arranging dovetail grooves.
The invention also discloses a laser hardening process for the thread surface of the trenchless drill rod joint, which comprises the following steps,
firstly, the trenchless drill rod double-end finish turning is used for carrying out thread turning on two ends of the drill rod,
secondly, cleaning the surface of the screw thread after turning by using a cleaning agent,
thirdly, standing and drying at normal temperature,
fourthly, driving the drill rod to rotate, coating hardening media on the threads at the two ends of the drill rod,
fifthly, carrying out laser hardening treatment on the rotating thread,
sixthly, performing polished thread surface treatment after standing for a period of time,
seventhly, marking the middle part of the drill rod body by laser,
and eighthly, respectively putting the two thread ends of the drill rod into a nitriding furnace for final hardening, standing and then molding.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
It should be noted that the structures, ratios, sizes, and the like shown in the drawings attached to the present specification are only used for matching the disclosure of the present specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions of the present invention, so that the present invention has no technical essence, and any structural modification, ratio relationship change, or size adjustment should still fall within the range covered by the technical contents disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention. .
Claims (8)
1. The utility model provides a non-excavation drill rod double-end finish turning for the drill rod finish machining, its characterized in that includes:
the device comprises a rack, wherein a material collecting disc is arranged on one side of the rack;
the machining part is slidably mounted on the rack, is positioned at two ends of the rack and comprises a first carriage, a second carriage and a third carriage which are sequentially arranged from top to bottom, the third carriage is connected with the rack and can slide along the direction of laying the drill rods, the second carriage is slidably mounted on the third carriage and has the same movement direction as the third carriage, the first carriage is slidably mounted on the second carriage and can move along the direction perpendicular to the direction of laying the drill rods, and a cutter for turning and milling the drill rods is further arranged on the first carriage.
2. The trenchless drill pipe double-ended finishing block of claim 1, wherein: the cutter is fixedly arranged on the first carriage through a clamp.
3. The trenchless drill pipe double-ended finishing block of claim 2, wherein: the clamp comprises
The driving part comprises a motor, and the output end of the motor is connected with the base;
the clamping part comprises a clamping piece and a pressing piece, the clamping piece is rotatably installed above the base, the pressing piece is fixedly installed above the clamping piece, a gap is reserved between the pressing piece and the clamping piece, through holes penetrating through the pressing piece are formed in the pressing piece body in a matrix mode, and bolts are inserted in the through holes.
4. The trenchless drill pipe double-ended finishing block of claim 3, wherein: and the inner wall of the through hole is provided with an internal thread matched with the bolt.
5. The trenchless drill pipe double-ended finishing block of claim 4, wherein: the pressing piece and the clamping piece are fixedly connected through an upright post.
6. The trenchless drill pipe double-ended finishing block of claim 5, wherein: the clamping piece and the pressing piece are the same in shape.
7. The trenchless drill pipe double-ended finishing block of claim 1, wherein: the first carriage, the second carriage and the third carriage are respectively connected in a sliding mode through dovetail grooves.
8. The laser hardening process for the thread surface of the trenchless drill rod joint is characterized by comprising the following steps of: comprises the following steps of (a) carrying out,
firstly, the trenchless drill rod double-end finish turning is used for carrying out thread turning on two ends of the drill rod,
secondly, cleaning the surface of the screw thread after turning by using a cleaning agent,
thirdly, standing and drying at normal temperature,
fourthly, driving the drill rod to rotate, coating hardening media on the threads at the two ends of the drill rod,
fifthly, carrying out laser hardening treatment on the rotating thread,
sixthly, performing polished thread surface treatment after standing for a period of time,
seventhly, marking the middle part of the drill rod body by laser,
and eighthly, respectively putting the two thread ends of the drill rod into a nitriding furnace for final hardening, standing and then molding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010315059.5A CN111468899A (en) | 2020-04-21 | 2020-04-21 | Laser hardening process for thread surface of trenchless drill rod joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010315059.5A CN111468899A (en) | 2020-04-21 | 2020-04-21 | Laser hardening process for thread surface of trenchless drill rod joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111468899A true CN111468899A (en) | 2020-07-31 |
Family
ID=71754095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010315059.5A Pending CN111468899A (en) | 2020-04-21 | 2020-04-21 | Laser hardening process for thread surface of trenchless drill rod joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111468899A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113061836A (en) * | 2021-03-15 | 2021-07-02 | 无锡双马钻探工具有限公司 | Nitriding furnace for threaded surface of drill rod head |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04182510A (en) * | 1990-11-16 | 1992-06-30 | Tokiwa Kensetsu Kk | Ground hardening material injecting method and device therefor |
| CN2734377Y (en) * | 2004-09-08 | 2005-10-19 | 襄樊特种电机有限公司 | Double end digital control special purpose lathe |
| CN201644797U (en) * | 2010-02-09 | 2010-11-24 | 台州震环数控机床有限公司 | Multistage lathe |
| CN201950219U (en) * | 2011-01-10 | 2011-08-31 | 天津振世机电设备有限公司 | Double-end numerically controlled lathe |
| CN105880638A (en) * | 2016-06-16 | 2016-08-24 | 德州德隆(集团)机床有限责任公司 | Numerically controlled lathe for two-head processing of torsion rod and method for processing torsion rod through numerically controlled lathe |
| CN207086971U (en) * | 2017-07-18 | 2018-03-13 | 十堰高明精密机械股份有限公司 | A kind of double end bore hole lathe of long rod both ends with taper hole workpiece |
| CN108842039A (en) * | 2018-08-13 | 2018-11-20 | 林州凤宝管业有限公司 | A kind of Roll Collar production method based on WC hard alloy |
-
2020
- 2020-04-21 CN CN202010315059.5A patent/CN111468899A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04182510A (en) * | 1990-11-16 | 1992-06-30 | Tokiwa Kensetsu Kk | Ground hardening material injecting method and device therefor |
| CN2734377Y (en) * | 2004-09-08 | 2005-10-19 | 襄樊特种电机有限公司 | Double end digital control special purpose lathe |
| CN201644797U (en) * | 2010-02-09 | 2010-11-24 | 台州震环数控机床有限公司 | Multistage lathe |
| CN201950219U (en) * | 2011-01-10 | 2011-08-31 | 天津振世机电设备有限公司 | Double-end numerically controlled lathe |
| CN105880638A (en) * | 2016-06-16 | 2016-08-24 | 德州德隆(集团)机床有限责任公司 | Numerically controlled lathe for two-head processing of torsion rod and method for processing torsion rod through numerically controlled lathe |
| CN207086971U (en) * | 2017-07-18 | 2018-03-13 | 十堰高明精密机械股份有限公司 | A kind of double end bore hole lathe of long rod both ends with taper hole workpiece |
| CN108842039A (en) * | 2018-08-13 | 2018-11-20 | 林州凤宝管业有限公司 | A kind of Roll Collar production method based on WC hard alloy |
Non-Patent Citations (1)
| Title |
|---|
| 周桂莲等: "《工程实践训练基础》", 30 April 2007, 西安电子科技大学出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113061836A (en) * | 2021-03-15 | 2021-07-02 | 无锡双马钻探工具有限公司 | Nitriding furnace for threaded surface of drill rod head |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201279688Y (en) | Bidirectionary movable, rotatable fixture of drilling machine | |
| CN211939944U (en) | Make things convenient for fixture device of fixed work piece of drilling machine | |
| CN111468899A (en) | Laser hardening process for thread surface of trenchless drill rod joint | |
| CN201592362U (en) | Hydraulic clamp for milling machine or boring machine | |
| CN212240011U (en) | Trenchless drill rod double-end finish turning machine | |
| CN219852215U (en) | Automatic change spare part drilling equipment | |
| CN218135358U (en) | Welded pipe forming machine | |
| CN114453895B (en) | Milling and drilling compound numerical control machine tool for machining open type thin-wall workpieces | |
| CN214236354U (en) | Equipment for hardware machining | |
| CN209920876U (en) | Dustproof engraving machine | |
| CN111360547A (en) | Trenchless drill rod double-end finish turning machine | |
| CN209477379U (en) | Move horizontally positioning anchor ear Universal rotary milling drill tools | |
| CN220006085U (en) | A high accuracy drilling machine for mould processing | |
| CN112548148A (en) | Automatic hole arrangement machining device with adjustable angle and using method thereof | |
| CN220093142U (en) | Optical axis drilling device | |
| CN214816511U (en) | Adjustable workbench for precise intelligent machine tool | |
| CN215788305U (en) | Round piece clamping tool | |
| CN217860130U (en) | Drilling machine drilling positioning device | |
| CN220881421U (en) | Positioning and clamping mechanism | |
| CN216029491U (en) | Automatic centering tool for machining | |
| CN213305507U (en) | Monitor for petroleum drilling | |
| CN218905113U (en) | Frock clamp convenient to change | |
| CN218983966U (en) | Clamp tool with adjustable range | |
| CN220446418U (en) | Positioning fixture is used in house ornamentation section bar processing | |
| CN220863275U (en) | Round bar side processing clamping fixture |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200731 |