CN105935817A - Processing equipment for external threads of rod-shaped metal castings - Google Patents
Processing equipment for external threads of rod-shaped metal castings Download PDFInfo
- Publication number
- CN105935817A CN105935817A CN201610458699.5A CN201610458699A CN105935817A CN 105935817 A CN105935817 A CN 105935817A CN 201610458699 A CN201610458699 A CN 201610458699A CN 105935817 A CN105935817 A CN 105935817A
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- CN
- China
- Prior art keywords
- fixed plate
- rod
- motor
- rotating shaft
- plate
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
- B23G1/00—Thread cutting; Automatic machines specially designed therefor
- B23G1/02—Thread cutting; Automatic machines specially designed therefor on an external or internal cylindrical or conical surface, e.g. on recesses
- B23G1/04—Machines with one working-spindle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/0042—Devices for removing chips
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/0042—Devices for removing chips
- B23Q11/0067—Devices for removing chips chip containers located under a machine or under a chip conveyor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/062—Work-clamping means adapted for holding workpieces having a special form or being made from a special material
- B23Q3/064—Work-clamping means adapted for holding workpieces having a special form or being made from a special material for holding elongated workpieces, e.g. pipes, bars or profiles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/069—Work-clamping means for pressing workpieces against a work-table
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
- B23Q5/02—Driving main working members
- B23Q5/04—Driving main working members rotary shafts, e.g. working-spindles
- B23Q5/10—Driving main working members rotary shafts, e.g. working-spindles driven essentially by electrical means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q7/00—Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting
- B23Q7/02—Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting by means of drums or rotating tables or discs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
- B23G2210/00—Details of threads produced
- B23G2210/08—External threads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
- B23G2240/00—Details of equipment for threading other than threading tools, details of the threading process
- B23G2240/08—Evacuation of chips or fines
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cleaning In General (AREA)
- Crushing And Pulverization Processes (AREA)
Abstract
The invention discloses processing equipment for external threads of rod-shaped metal castings. The processing equipment comprises a top plate, a support plate and a base, wherein the support plate is positioned at one end of the top of the base, the top plate is positioned at the top of the support plate, the top of the top plate is provided with a first motor, a rotating shaft of the first motor is connected with a first telescopic rod through a connecting rod, the top of the first telescopic rod is provided with a knife body, one end of the base is provided with a gear disc, and the gear disc is connected with a rotating shaft of a second motor through a rotating shaft. According to the processing equipment for the external threads of the rod-shaped metal castings, the movement of a fourth fixing plate is driven through the vertical movement of the first telescopic rod, the bottom of the fourth fixing plate is provided with a cleaning brush, and the inner part of a third fixing plate is provided with a collecting tank, so that not only are the external thread manufacture and external thread groove clearing of the metal castings are facilitated, the collection of waste scraps is also facilitated. The production cost is reduced, and resources are saved. At the same time, the movement of the knife body is limited, and the precision of threads is improved.
Description
Technical field
The present invention relates to metal casting processing technique field, a kind of metal, rod-shaped foundry goods external screw thread process equipment.
Background technology
Along with progress and the development of society, a lot of article are all changed, it is achieved that mechanization, and therefore, increasing metal casting is produced, and many places all can be used with externally threaded metal, rod-shaped foundry goods.
Present stage is carrying out external screw thread processing to metal, rod-shaped foundry goods, when clearing up thread groove, uses the mode of washing to clear up, the most not only waste water resource, can increase production cost when recycling utilizes carrying out water, over screw thread time, employing cutter hub moves, metal, rod-shaped foundry goods is fixing to be rotated, and processes shaft-like metal casting, so can increase the work load of equipment, decrease the service life of equipment, meanwhile, the movement that cutter hub is slight can be caused, reduce the precision of screw thread.
Summary of the invention
It is an object of the invention to provide a kind of metal, rod-shaped foundry goods external screw thread process equipment, with the problem solving to propose in above-mentioned background technology.
nullFor achieving the above object，The present invention provides following technical scheme: a kind of metal, rod-shaped foundry goods external screw thread process equipment，Including top board、Gripper shoe and base，Gripper shoe is positioned at one end, top of base，Top board is positioned at the top of gripper shoe，The top of described top board is provided with the first motor，The rotating shaft of this first motor is connected with the first expansion link by connecting rod，The top of described first expansion link is provided with cutter hub，One end of described base is provided with fluted disc，This fluted disc is connected with the rotating shaft of the second motor by rotating shaft，The top of described chassis interior is provided with shifting chute，This shifting chute be internally provided with movable plate，The top of described movable plate is provided with the 3rd motor，Rotating shaft one end of 3rd motor is connected with fixture by the second expansion link，The top of described base is provided with fixing device，This fixing device is made up of the second fixed plate and the 3rd fixed plate，3rd fixed plate is positioned at the bottom of the second fixed plate，The bottom of described 3rd fixed plate is provided with collecting tank，The middle part on described second fixed plate top is provided with groove，And second the two ends of fixed plate be provided with support bar，Connected by the 4th fixed plate between this support bar，One end bottom described 4th fixed plate is provided with cleaning brush.
Preferably, described shifting chute is suitable with movable plate, and the bottom of this movable plate is provided with the tooth being meshed with fluted disc, and this fluted disc is provided with mounting groove with the junction of base, and fluted disc is connected with mounting groove by rotating shaft, one end of this rotating shaft is run through mounting groove and is connected with the second motor of base side.
Preferably, described fixture is made up of the first fixed plate, sliding tray and clamping plate, and this sliding tray lays respectively at top and the bottom of the first fixed plate, and sliding tray is connected with clamping plate by slide block, and these clamping plate are arcuation, and clamping plate connect by screw and the first fixed plate are fixing.
Preferably, the both sides of described 4th fixed plate are provided with limited block, and this limited block is provided with suitable cell body with the junction of support bar, and spacing and the length of groove between cleaning brush with cutter hub are consistent.
Compared with prior art, the invention has the beneficial effects as follows: this metal, rod-shaped foundry goods external screw thread process equipment, by the movement moving up and down drive the 4th fixed plate of the first expansion link, second fixed plate is moved together, the top of the second fixed plate is provided with groove, the bottom of the 4th fixed plate is provided with cleaning brush, 3rd fixed plate is internally provided with collecting tank, not only facilitate and metal casting is carried out external screw thread manufacture and the cleaning of external screw thread groove, also facilitate the collection of scrap, reduce production cost, economize on resources, simultaneously, define the movement of cutter hub, improve the precision of screw thread；Being fixed metal, rod-shaped foundry goods by fixing device, the second driven by motor fluted disc rotates, and fluted disc drives movable plate to slide, and decreases the burden of equipment, adds the service life of equipment.
Accompanying drawing explanation
Fig. 1 is present configuration schematic diagram；
Fig. 2 is present configuration fixture schematic diagram.
In figure: 1 top board, 2 gripper shoes, 3 bases, 4 connecting rods, 5 first expansion links, 6 cutter hubs, 7 shifting chutes, 8 fluted discs, 9 movable plates, 10 fixtures, 101 first fixed plates, 102, sliding tray, 103 clamping plate, 11 fixing devices, 111 second fixed plates, 112 the 3rd fixed plates, 12 support bars, 13 the 4th fixed plates, 14 cleaning brush, 15 grooves.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of protection of the invention.
nullRefer to Fig. 1-2，The present invention provides a kind of technical scheme: a kind of metal, rod-shaped foundry goods external screw thread process equipment，Including top board 1、Gripper shoe 2 and base 3，Gripper shoe 2 is positioned at one end, top of base 3，Top board 1 is positioned at the top of gripper shoe 2，The top of top board 1 is provided with the first motor，The rotating shaft of this first motor is connected with the first expansion link 5 by connecting rod 4，The top of the first expansion link 5 is provided with cutter hub 6，One end of base 3 is provided with fluted disc 8，This fluted disc 8 is connected with the rotating shaft of the second motor by rotating shaft，Top within base 3 is provided with shifting chute 7，This shifting chute 7 be internally provided with movable plate 9，Shifting chute 7 is suitable with movable plate 9，The bottom of this movable plate 9 is provided with the tooth being meshed with fluted disc 8，This fluted disc 8 is provided with mounting groove with the junction of base 3，And fluted disc 8 is connected with mounting groove by rotating shaft，One end of this rotating shaft is run through mounting groove and is connected with the second motor of base 3 side，The top of movable plate 9 is provided with the 3rd motor，Rotating shaft one end of 3rd motor is connected with fixture 10 by the second expansion link，Fixture 10 is by the first fixed plate 101、Sliding tray 102 and clamping plate 103 are constituted，This sliding tray 102 lays respectively at top and the bottom of the first fixed plate 101，And sliding tray 102 is connected with clamping plate 103 by slide block，These clamping plate 103 are arcuation，And clamping plate 103 are by screw and the first fixing connection of fixed plate 101，The top of base 3 is provided with fixing device 11，This fixing device is made up of the second fixed plate 111 and the 3rd fixed plate 112，3rd fixed plate 112 is positioned at the bottom of the second fixed plate 111，The bottom of the 3rd fixed plate 112 is provided with collecting tank，The middle part on the second fixed plate 111 top is provided with groove 15，And second the two ends of fixed plate 111 be provided with support bar 12，Connected by the 4th fixed plate 13 between this support bar 12，The both sides of the 4th fixed plate 13 are provided with limited block，This limited block is provided with suitable cell body with the junction of support bar 12，Spacing and the length of groove 15 between cleaning brush 14 with cutter hub 6 are consistent，One end bottom 4th fixed plate 13 is provided with cleaning brush 14，By the movement moving up and down drive the 4th fixed plate 13 of the first expansion link 5，Second fixed plate 111 is moved together，The top of the second fixed plate 111 is provided with groove 15，The bottom of the 4th fixed plate 13 is provided with cleaning brush 14，3rd fixed plate 112 is internally provided with collecting tank，Not only facilitate and metal casting is carried out external screw thread manufacture and the cleaning of external screw thread groove，Also facilitate the collection of scrap，Reduce production cost，Economize on resources，Simultaneously，Define the movement of cutter hub 6，Improve the precision of screw thread；Being fixed metal, rod-shaped foundry goods by fixing device 11, the second driven by motor fluted disc 8 rotates, and fluted disc 8 drives movable plate 9 to slide, and decreases the burden of equipment, adds the service life of equipment.
nullOperation principle: during use，Size according to metal, rod-shaped foundry goods，Clamping plate 103 are adjusted in sliding tray 102，Tighten screw，Metal, rod-shaped foundry goods is fixed，Open the first motor、Second motor and the 3rd motor，First driven by motor connecting rod 4、First expansion link 5 and cutter hub 6 rotate，First expansion link 5 stretches and drives the 4th fixed plate 13 to move down into the bottom of cell body，And then the 4th fixed plate 13 drive support bar 2 that second fixed plate is pressed for 111 times，Limit the movement of metal, rod-shaped foundry goods，Second driven by motor fluted disc 8 rotates，And then drive movable plate 9 to slide in shifting chute 7，Shaft-like metal casting is driven to move，3rd driven by motor fixture 10 rotates，And then drive shaft-like metal casting to rotate，Cutter hub 6 carries out external screw thread processing through groove 15 to metal, rod-shaped foundry goods，External screw thread is cleared up by cleaning brush 14 through groove 15，Scrap enters in collecting tank.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, being appreciated that and these embodiments can carry out multiple change without departing from the principles and spirit of the present invention, revise, replace and modification, the scope of the present invention be defined by the appended.
Claims (4)
- null1. a metal, rod-shaped foundry goods external screw thread process equipment，Including top board (1)、Gripper shoe (2) and base (3)，Gripper shoe (2) is positioned at one end, top of base (3)，Top board (1) is positioned at the top of gripper shoe (2)，It is characterized in that: the top of described top board (1) is provided with the first motor，The rotating shaft of this first motor is connected with the first expansion link (5) by connecting rod (4)，The top of described first expansion link (5) is provided with cutter hub (6)，One end of described base (3) is provided with fluted disc (8)，This fluted disc (8) is connected with the rotating shaft of the second motor by rotating shaft，The top of described base (3) inside is provided with shifting chute (7)，This shifting chute (7) be internally provided with movable plate (9)，The top of described movable plate (9) is provided with the 3rd motor，Rotating shaft one end of 3rd motor is connected with fixture (10) by the second expansion link，The top of described base (3) is provided with fixing device (11)，This fixing device is made up of the second fixed plate (111) and the 3rd fixed plate (112)，3rd fixed plate (112) is positioned at the bottom of the second fixed plate (111)，The bottom of described 3rd fixed plate (112) is provided with collecting tank，The middle part on described second fixed plate (111) top is provided with groove (15)，And second the two ends of fixed plate (111) be provided with support bar (12)，Connected by the 4th fixed plate (13) between this support bar (12)，One end of described 4th fixed plate (13) bottom is provided with cleaning brush (14).
- One the most according to claim 1 metal, rod-shaped foundry goods external screw thread process equipment, it is characterized in that: described shifting chute (7) is suitable with movable plate (9), the bottom of this movable plate (9) is provided with the tooth being meshed with fluted disc (8), this fluted disc (8) is provided with mounting groove with the junction of base (3), and fluted disc (8) is connected with mounting groove by rotating shaft, one end of this rotating shaft is run through mounting groove and is connected with the second motor of base (3) side.
- One the most according to claim 1 metal, rod-shaped foundry goods external screw thread process equipment, it is characterized in that: described fixture (10) is made up of the first fixed plate (101), sliding tray (102) and clamping plate (103), this sliding tray (102) lays respectively at top and the bottom of the first fixed plate (101), and sliding tray (102) is connected with clamping plate (103) by slide block, these clamping plate (103) are arcuation, and clamping plate (103) connect by screw and the first fixed plate (101) are fixing.
- One the most according to claim 1 metal, rod-shaped foundry goods external screw thread process equipment, it is characterized in that: the both sides of described 4th fixed plate (13) are provided with limited block, this limited block is provided with suitable cell body with the junction of support bar (12), and spacing and the length of groove (15) between cleaning brush (14) with cutter hub (6) are consistent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610458699.5A CN105935817B (en) | 2016-06-23 | 2016-06-23 | A kind of metal, rod-shaped casting external screw thread process equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610458699.5A CN105935817B (en) | 2016-06-23 | 2016-06-23 | A kind of metal, rod-shaped casting external screw thread process equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105935817A true CN105935817A (en) | 2016-09-14 |
| CN105935817B CN105935817B (en) | 2017-12-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610458699.5A Active CN105935817B (en) | 2016-06-23 | 2016-06-23 | A kind of metal, rod-shaped casting external screw thread process equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105935817B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113210549A (en) * | 2021-05-11 | 2021-08-06 | 安徽工程大学 | Thread rolling die mechanism convenient to retrieve waste material |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1199407A (en) * | 1997-09-29 | 1999-04-13 | Machio Kiyosaki | Prepared hole boring machine |
| WO2007099627A1 (en) * | 2006-03-01 | 2007-09-07 | Fujitsu Limited | Screw tightening device |
| CN203578949U (en) * | 2013-12-03 | 2014-05-07 | 合肥市奥比特电气有限公司 | Automatic tapping machine |
| CN204430720U (en) * | 2014-12-25 | 2015-07-01 | 浙江三田汽车空调压缩机有限公司 | Planetary plate decomposes press bed |
| CN105345087A (en) * | 2015-12-08 | 2016-02-24 | 天津巨龙暖通设备开发有限公司 | Drilling device for metal shell of heating radiator |
| CN105397138A (en) * | 2015-11-14 | 2016-03-16 | 安徽合叉叉车有限公司 | Continuous type drilling equipment for front supports of safety frames of forklifts |
| CN205733305U (en) * | 2016-06-23 | 2016-11-30 | 无锡市国松环保机械有限公司 | A kind of metal, rod-shaped foundry goods external screw thread process equipment |
-
2016
- 2016-06-23 CN CN201610458699.5A patent/CN105935817B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1199407A (en) * | 1997-09-29 | 1999-04-13 | Machio Kiyosaki | Prepared hole boring machine |
| WO2007099627A1 (en) * | 2006-03-01 | 2007-09-07 | Fujitsu Limited | Screw tightening device |
| CN203578949U (en) * | 2013-12-03 | 2014-05-07 | 合肥市奥比特电气有限公司 | Automatic tapping machine |
| CN204430720U (en) * | 2014-12-25 | 2015-07-01 | 浙江三田汽车空调压缩机有限公司 | Planetary plate decomposes press bed |
| CN105397138A (en) * | 2015-11-14 | 2016-03-16 | 安徽合叉叉车有限公司 | Continuous type drilling equipment for front supports of safety frames of forklifts |
| CN105345087A (en) * | 2015-12-08 | 2016-02-24 | 天津巨龙暖通设备开发有限公司 | Drilling device for metal shell of heating radiator |
| CN205733305U (en) * | 2016-06-23 | 2016-11-30 | 无锡市国松环保机械有限公司 | A kind of metal, rod-shaped foundry goods external screw thread process equipment |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113210549A (en) * | 2021-05-11 | 2021-08-06 | 安徽工程大学 | Thread rolling die mechanism convenient to retrieve waste material |
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| Publication number | Publication date |
|---|---|
| CN105935817B (en) | 2017-12-22 |
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