CN110883389A - Improved clamp platform for tapping tubular pig iron castings and tapping method - Google Patents
Improved clamp platform for tapping tubular pig iron castings and tapping method Download PDFInfo
- Publication number
- CN110883389A CN110883389A CN201911247849.8A CN201911247849A CN110883389A CN 110883389 A CN110883389 A CN 110883389A CN 201911247849 A CN201911247849 A CN 201911247849A CN 110883389 A CN110883389 A CN 110883389A
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- tapping
- pig iron
- tubular
- casting
- rod
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- 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
- B23G1/16—Thread cutting; Automatic machines specially designed therefor in holes of workpieces by taps
- B23G1/18—Machines with one working spindle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/02—Chucks
-
- 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
- B23G1/44—Equipment or accessories specially designed for machines or devices for thread cutting
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
Abstract
The invention discloses an improved fixture platform for tapping of tubular pig iron castings, which adopts a three-jaw chuck as a fixture, wherein the three-jaw chuck mainly comprises a chuck base and three L-shaped grabbing rods clamped on a slide rail of the chuck base, the inner sides of vertical rods of the L-shaped grabbing rods are fixedly connected with a piston cylinder body of a telescopic rod, the top end of a piston rod in the piston cylinder body is connected with a right-angle plate, the rod wall of the piston rod is sleeved with a first spring, the right-angle plate comprises a planar transverse plate and an arc vertical plate, and the transverse plate of the right-angle plate is connected to one end of a transverse rod of the L-shaped grabbing rod; the outer cambered surface of the vertical plate is lined with an anti-slip rubber layer; the invention also provides a tapping method of the tubular cast iron casting, which comprises the steps of internal clamping of the casting, tapping of the casting, tool withdrawal and the like. The invention can be suitable for tubular pig iron castings with different bottom surfaces, and the tapping tool bit is in soft contact with threads in the upward screwing process in a mode of loosening the internal clamping castings, so that the damage to the threads is small, and the tapping quality is improved.
Description
Technical Field
The invention relates to the technical field of pig iron castings, in particular to an improved clamp platform for tapping of tubular pig iron castings and a tapping method.
Background
After casting, ordinary cast iron castings need to be subjected to processing procedures such as polishing, cleaning, drying and the like, and for some tubular castings, such as cast iron parts of water pipes, valves, automobile brake pumps and the like, rough machining treatment such as tapping and the like needs to be performed after cleaning treatment.
For the tapping process of the tubular casting, the tubular casting is clamped by using any clamp, and after tapping, the tapping tool bit is smoothly taken out of the threaded hole of the casting, which has high requirements on the tapping quality. The general way behind the tapping of current foundry goods is, adopts manual support foundry goods, prevents that the foundry goods from sliding off on the tool bit, makes the tool bit slowly rotate out from the screw again, and the dynamics is held not well and is caused the tool bit easily to screw thread secondary damage, needs the improvement.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides an improved clamp platform for tapping tubular pig iron castings and a tapping method.
In order to achieve the purpose, the invention adopts the following technical scheme:
an improved fixture platform for tapping of tubular pig iron castings is characterized in that a three-jaw chuck is adopted as a fixture, the three-jaw chuck mainly comprises a chuck base and three L-shaped grabbing rods clamped on slide rails of the chuck base, the bottoms of the cross rods of the L-shaped grabbing rods are clamped in the slide rails of the chuck base, the inner side of each vertical rod of any L-shaped grabbing rod is fixedly connected with a telescopic rod, each telescopic rod mainly comprises a piston cylinder and a piston rod sleeved in the piston cylinder, the outer side wall of the piston cylinder is welded with the corresponding vertical rod of the L-shaped grabbing rod, a first spring is sleeved on the rod wall of each piston rod, the top end of each piston rod is connected with a right-angle plate, each right-angle plate comprises a planar transverse plate and an arc vertical plate, the top end of each piston rod is connected to one side of the transverse plate bottom surface of the right-angle plate, the other side of the bottom surface of;
the vertical plates of the three right-angle plates are positioned on the cambered surface of the same cylinder, and the outer cambered surfaces of the vertical plates of the three right-angle plates are lined with anti-skid rubber layers.
Preferably, the three-jaw chuck is a TS200A series horizontal fixed scale table top, the size of the inner cavity of an object clamped by the three-jaw chuck can be clearly known through scales, and the pressure between the vertical plate and the inner wall of the casting can be clearly judged by matching with a pressure sensor, and whether clamping is carried out or not can be judged by means of machining experience.
Preferably, the telescopic rod is an electric push rod driven by a direct current motor DC24V, the direct current push rod is high in adjustment speed, and the efficiency of tapping and clamping can be improved.
Preferably, first spring is high strength compression spring, and the second spring specifically is high strength extension spring, and first spring plays the bullet effect, and the second spring plays the pull-down effect, and the two combined action makes the structure of three right angle boards more firm.
Based on the improved fixture platform for tapping the tubular pig iron casting, the invention also provides a tapping method for the tubular pig iron casting, which comprises the following steps of:
a. and (3) internal clamping of the casting: sleeving a tubular pig iron casting on the outer cambered surfaces of three vertical plates, obliquely putting an opening wall at the bottom end of the tubular pig iron casting on three transverse plates, putting a level meter on the opening wall at the top end of the tubular pig iron casting, adjusting the elongation of three telescopic rods to enable the level meter to be in a horizontal state, adjusting three L-shaped grabbing rods of a three-jaw chuck to enable the inner wall of the tubular pig iron casting to be attached to the inner cambered surfaces of the three vertical plates, further adjusting the three-jaw chuck and the telescopic rods to enable the pressure between the vertical plates and the inner wall of the tubular pig iron casting to reach about 1MPa, and keeping the opening wall at the top end of the tubular pig iron casting to be in a horizontal state all the;
b. tapping the casting: adopting a tapping cutter head to vertically press down the tubular pig iron casting from the top opening wall of the tubular pig iron casting for tapping, and spraying cooling liquid;
c. retracting the cutter: and c, stopping the tapping cutter head after tapping is finished, adjusting three L-shaped gripping rods of the three-jaw chuck to enable the pressure between the vertical plate and the inner wall of the tubular pig iron casting to be 0.02-0.04MPa, enabling the rotation direction of the tapping cutter head to be opposite to that of the step b, and separating the tapping cutter head from the casting.
Compared with the prior art, the invention has the beneficial effects that:
the invention firstly improves the existing three-jaw chuck, so that the three-jaw chuck is suitable for tubular pig iron castings with different bottom surfaces, and can ensure that the tapping top surface of the tubular pig iron casting keeps a horizontal state, thereby improving the tapping quality.
Another point innovation of the invention is the improvement of the tool withdrawal method, when the tapping tool bit is rotated and withdrawn, the casting is driven to rotate to a certain extent, but under the blocking of the bottom opening wall of the tubular pig iron casting, the rotation amplitude of the casting is smaller, but enough buffer space is provided, so that the contact between the tapping tool bit and the threads in the rotating process is changed into soft contact, the damage to the threads is smaller, and the damage to the threads in the withdrawing process of the existing tapping is avoided.
Drawings
FIG. 1 is a schematic structural diagram of an improved fixture platform for tapping tubular pig iron castings according to the present invention;
in the figure: three-jaw chuck 1, telescopic link 2, first spring 3, right-angle plate 4, second spring 5, anti-skidding rubber layer 6, tapping tool bit 7.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1, an improved fixture platform for tapping of tubular pig iron castings adopts a three-jaw chuck 1 as a fixture, the three-jaw chuck 1 mainly comprises a chuck base and three L-shaped grabbing rods clamped on sliding rails of the chuck base, the bottoms of the cross rods of the L-shaped grabbing rods are clamped in the sliding rails of the chuck base, the inner side of each vertical rod of any L-shaped grabbing rod is fixedly connected with a telescopic rod 2, each telescopic rod 2 mainly comprises a piston cylinder and a piston rod sleeved in the piston cylinder, the outer side wall of the piston cylinder is welded with the corresponding vertical rod of the L-shaped grabbing rod, the rod wall of each piston rod is sleeved with a first spring 3, the top end of each piston rod is connected with a right-angle plate 4, each right-angle plate 4 comprises a planar transverse plate and an arc-shaped vertical plate, the top end of each piston rod is connected to one side of the bottom surface of the transverse plate 4, the other side of the bottom surface of the transverse plate 4 is connected with a; the vertical plates of the three right-angle plates 4 are positioned on the cambered surface of the same cylinder, and the outer cambered surfaces of the vertical plates of the three right-angle plates 4 are lined with anti-skid rubber layers 6.
Referring to fig. 1, the three-jaw chuck 1 is specifically a TS200A series horizontal fixed scale table top, the size of the inner cavity of an object clamped by the three-jaw chuck 1 can be clearly known through scales, and the pressure between the vertical plate and the inner wall of a casting can be clearly judged by matching with a pressure sensor, and certainly, whether clamping is carried out or not can be judged by means of machining experience.
Referring to fig. 1, the telescopic rod 2 is specifically an electric push rod driven by a direct current horse motor DC24V, and the direct current push rod is high in adjustment speed and capable of improving tapping and clamping efficiency.
Referring to fig. 1, first spring 3 is high strength compression spring, and second spring 5 specifically is high strength extension spring, and first spring 3 plays the bullet effect, and second spring 5 plays the pull-down effect, and the two combined action makes the structure of three right-angle boards 4 more firm.
Based on the improved fixture platform for tapping the tubular pig iron casting, the invention also provides a tapping method for the tubular pig iron casting, which comprises the following steps of:
a. and (3) internal clamping of the casting: sleeving a tubular pig iron casting on the outer cambered surfaces of three vertical plates, obliquely lapping the bottom end opening wall of the tubular pig iron casting on three transverse plates, lapping a level meter on the top end opening wall of the tubular pig iron casting, adjusting the elongation of three telescopic rods 2 to enable the level meter to be in a horizontal state, adjusting three L-shaped grabbing rods of a three-jaw chuck 1 to enable the inner wall of the tubular pig iron casting to be attached to the inner cambered surfaces of the three vertical plates, further adjusting the three-jaw chuck 1 and the telescopic rods 2 to enable the pressure between the vertical plates and the inner wall of the tubular pig iron casting to reach about 1MPa, and keeping the top end opening wall of the tubular pig iron casting to be in a horizontal state all the time;
b. tapping the casting: adopting a tapping cutter head 7 to vertically press down the tubular pig iron casting from the top opening wall of the tubular pig iron casting for tapping, and spraying cooling liquid;
c. retracting the cutter: and c, stopping the tapping cutter head 7 after tapping is finished, adjusting three L-shaped gripping rods of the three-jaw chuck 1 to enable the pressure between a vertical plate and the inner wall of the tubular pig iron casting to be 0.02-0.04MPa, enabling the rotation direction of the tapping cutter head 7 to be opposite to that in the step b, and separating the tapping cutter head 7 from the casting.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (5)
1. An improvement type anchor clamps platform that tubulose pig iron casting tapping was used adopts three-jaw chuck (1) as anchor clamps, its characterized in that, three-jaw chuck (1) mainly comprises chuck base and the three L shape grab bar of joint on the slide rail of chuck base, the horizontal pole bottom joint of L shape grab bar is in the slide rail of chuck base, arbitrary the inboard rigid coupling of the montant of L shape grab bar has telescopic link (2), telescopic link (2) mainly comprise piston cylinder and the piston rod of cup jointing in piston cylinder, the lateral wall of piston cylinder welds with the montant of L shape grab bar, the pole wall of piston rod has cup jointed first spring (3), the top of piston rod is connected with right angle board (4), right angle board (4) comprise planar diaphragm and curved riser, the top of piston rod is connected on one side of right angle board (4) diaphragm basal surface, the other side of the bottom surface of the transverse plate of the right-angle plate (4) is connected with a second spring (5), and one end, far away from the transverse plate of the right-angle plate (4), of the second spring (5) is connected to one end of a transverse rod of the L-shaped grabbing rod;
the vertical plates of the three right-angle plates (4) are positioned on the same cylinder cambered surface, and the outer cambered surfaces of the vertical plates of the three right-angle plates (4) are lined with anti-skid rubber layers (6).
2. An improved fixture platform for tapping cast iron castings with tubular shape according to claim 1, characterized in that the three-jaw chuck (1) is a horizontal fixed scale table top of TS200A series.
3. The improved fixture platform for tapping cast iron castings with tubular shape according to claim 1, characterized in that the telescopic rod (2) is an electric push rod driven by a DC motor DC 24V.
4. An improved clamp platform for tapping cast tubular pig iron as claimed in claim 1, characterised in that the first spring (3) is a high strength compression spring and the second spring (5) is in particular a high strength tension spring.
5. A method of tapping a tubular pig iron casting using the improved fixture platform for tapping a tubular pig iron casting of claim 1, comprising the steps of:
a. and (3) internal clamping of the casting: sleeving a tubular pig iron casting on the outer cambered surfaces of three vertical plates, obliquely lapping the bottom end opening wall of the tubular pig iron casting on three transverse plates, lapping a level gauge on the top end opening wall of the tubular pig iron casting, adjusting the elongation of three telescopic rods (2) to enable the level gauge to be in a horizontal state, adjusting three L-shaped grabbing rods of a three-jaw chuck (1) to enable the inner wall of the tubular pig iron casting to be attached to the inner cambered surfaces of the three vertical plates, further adjusting the three-jaw chuck (1) and the telescopic rods (2) to enable the pressure between the vertical plates and the inner wall of the tubular pig iron casting to reach about 1MPa, and keeping the top end opening wall of the tubular pig iron casting to be in a horizontal state all the time;
b. tapping the casting: adopting a tapping cutter head (7) to vertically press down the tubular pig iron casting from the top opening wall of the tubular pig iron casting for tapping and spraying cooling liquid;
c. retracting the cutter: and (c) stopping the tapping cutter head (7) after tapping is finished, adjusting three L-shaped gripping rods of the three-jaw chuck (1) to enable the pressure between a vertical plate and the inner wall of the tubular pig iron casting to be 0.02-0.04MPa, enabling the rotation direction of the tapping cutter head (7) to be opposite to that of the step b, and separating the tapping cutter head (7) from the casting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911247849.8A CN110883389B (en) | 2019-12-09 | 2019-12-09 | Improved clamp platform for tapping tubular pig iron castings and tapping method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911247849.8A CN110883389B (en) | 2019-12-09 | 2019-12-09 | Improved clamp platform for tapping tubular pig iron castings and tapping method |
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| Publication Number | Publication Date |
|---|---|
| CN110883389A true CN110883389A (en) | 2020-03-17 |
| CN110883389B CN110883389B (en) | 2020-11-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911247849.8A Active CN110883389B (en) | 2019-12-09 | 2019-12-09 | Improved clamp platform for tapping tubular pig iron castings and tapping method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112775504A (en) * | 2020-12-29 | 2021-05-11 | 霍山嘉远智能制造有限公司 | Auxiliary device for machining threads of opening shaft hole of casting |
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| CN207824415U (en) * | 2017-11-21 | 2018-09-07 | 青岛征和工业股份有限公司 | A kind of vertical machining centre pneumatic expansion device |
| CN208495993U (en) * | 2018-05-23 | 2019-02-15 | 安特（惠州）工业有限公司 | Chasing bar with detection positioning |
| CN208662737U (en) * | 2018-07-22 | 2019-03-29 | 重庆海翊峰工贸有限公司 | A kind of tapping machine for internal thread machining |
| CN209036030U (en) * | 2018-10-30 | 2019-06-28 | 田中金属加工（上海）有限公司 | Multifunctional quick tooling for tapping machine |
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2019
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Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86206493U (en) * | 1986-11-04 | 1987-07-01 | 上海水泵厂 | Multipurpose easy to use soft jaw for machine tool |
| KR20150111215A (en) * | 2014-03-25 | 2015-10-05 | 대신전자 주식회사 | Side processing apparatus for production |
| US20170021469A1 (en) * | 2015-04-30 | 2017-01-26 | Jerome D. Sailing | CNC Machine Cutting Fluid Discharging Tool Accessory |
| CN105855951A (en) * | 2016-06-13 | 2016-08-17 | 镇江市富德数控机床科技有限公司 | Fixture platform for computer numerical control machine tool |
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| CN108161452A (en) * | 2017-12-22 | 2018-06-15 | 合肥仨力机械制造有限公司 | A kind of fork truck part process equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112775504A (en) * | 2020-12-29 | 2021-05-11 | 霍山嘉远智能制造有限公司 | Auxiliary device for machining threads of opening shaft hole of casting |
| CN112775504B (en) * | 2020-12-29 | 2023-08-22 | 霍山嘉远智能制造有限公司 | Foundry goods open shaft hole screw thread processing auxiliary device |
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| Publication number | Publication date |
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| CN110883389B (en) | 2020-11-20 |
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