CN113210684B - Adjusting device for copper pipe face milling machine - Google Patents

Adjusting device for copper pipe face milling machine Download PDF

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Publication number
CN113210684B
CN113210684B CN202110387481.6A CN202110387481A CN113210684B CN 113210684 B CN113210684 B CN 113210684B CN 202110387481 A CN202110387481 A CN 202110387481A CN 113210684 B CN113210684 B CN 113210684B
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China
Prior art keywords
shell
copper pipe
diameter
circular area
block
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Active
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CN202110387481.6A
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Chinese (zh)
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CN113210684A (en
Inventor
孔岩
李丽兴
王力
徐文峰
李强
杨雄
刁文
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.)
Wuhu Jingyi Copper Co ltd
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Wuhu Jingyi Copper Co ltd
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Publication date
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Priority to CN202110387481.6A priority Critical patent/CN113210684B/en
Publication of CN113210684A publication Critical patent/CN113210684A/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C3/00—Milling particular work; Special milling operations; Machines therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C9/00—Details or accessories so far as specially adapted to milling machines or cutter
    • 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
    • B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
    • B23Q5/22—Feeding members carrying tools or work
    • B23Q5/28—Electric drives

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Milling Processes (AREA)

Abstract

The invention provides an adjusting device for a copper pipe surface milling machine, which relates to the field of copper pipe processing, and comprises a shell, wherein the shell is provided with perforations penetrating through the front end face and the rear end face of the shell; the rotary table and the output shaft around the periphery of the perforation are fixedly connected with the center of the side face of the rotary table, a circular area is formed between the opposite side faces of each rotary table, the distances from the center of each rotary table to the center of the perforation are equal, the central axis of the circular area is coincident with the central axis of the perforation, the diameter of the circular area is equal to the diameter of a copper pipe to be milled, the motor is positioned outside the shell, and the output shaft of the motor penetrates through a first chute arranged on the shell; a milling cutter is arranged on the side surface of at least one turntable; and the adjusting part is arranged outside the shell and used for driving the motor to slide along the first sliding groove. Through this device, can adjust the diameter of circular region outside the casing to adapt to the copper pipe of different specifications, thereby reduced the operation degree of difficulty, saved operating time.

Description

Adjusting device for copper pipe face milling machine
Technical Field
The invention relates to the field of copper pipe machining, in particular to an adjusting device for a copper pipe surface milling machine.
Background
After the copper pipe is produced, a milling machine is needed to mill the surface of the copper pipe so that the surface of the copper pipe is smoother.
The inventors found that: at present, when milling copper pipes with different specifications, the milling machine needs to be disassembled to adjust the distance between rotating discs in the milling machine so as to adapt to the diameters of the copper pipes, and the mode is complex to operate and long in operation time.
Disclosure of Invention
In view of this, an object of one or more embodiments of the present disclosure is to provide an adjusting device for a copper pipe surface milling machine, so as to solve the technical problems of complicated operation and long operation time in the prior art that when milling copper pipes with different specifications, the milling machine needs to be disassembled to adjust the distance between inner turntables of the milling machine to adapt to the diameter of the copper pipe.
In view of the above, one or more embodiments of the present disclosure provide an adjusting device for a copper tube face milling machine, including:
the shell is provided with perforations penetrating through the front end face and the rear end face of the shell, and the shell is used for enabling the copper pipe to penetrate through;
The rotary table and the output shaft around the periphery of the perforation are fixedly connected with the centers of the side surfaces of the rotary table, a circular area is formed between the opposite side surfaces of each rotary table, the distances from the center of each rotary table to the center of the perforation are equal, the central axis of the circular area is coincident with the central axis of the perforation, the diameter of the circular area is equal to the diameter of a copper pipe to be milled, the motor is positioned outside the shell, and the output shaft of the motor penetrates through a first chute arranged on the shell;
the milling cutter is arranged on the side face of at least one turntable and is used for milling the surface of the copper pipe penetrating through the perforation;
and the adjusting part is arranged outside the shell and used for driving the motor to slide along the first sliding groove, so that the diameter of the circular area is changed to adapt to copper pipes with different specifications.
Further, the adjusting part includes:
the driving ring is arranged outside the shell, at least three fixing blocks are fixed on the outer side surface of the shell, the fixing blocks are provided with sliding holes, the driving ring is in sliding connection with the sliding holes, gaps are reserved between the side surface of the driving block facing the shell and the surface of the shell, and the motors are all arranged in the driving ring;
The gap is formed between the side plates, the side face of the driving ring, which faces the driving ring, is provided with first threads, the side face of the driving ring, which faces the driving ring, is provided with second threads, the first threads are matched with the second threads, and when the driving ring rotates, the driving ring drives the linkage rod to approach or separate from the perforation.
Further, the method further comprises the following steps:
the stabilizing plates are arranged on the left side and the right side of the side plate, and the sliding blocks are fixed on the side surfaces of the stabilizing plates, facing the shell, and are positioned in third sliding grooves formed in the surface of the shell and are in sliding connection with the third sliding grooves, and second sliding grooves are formed in the end surfaces, facing the side plates, of the stabilizing plates;
One end of the spring is fixed on the sliding block, and the other end of the spring is fixed on the bottom of the third sliding groove;
the limiting blocks are fixed on the side wall, facing the side plate, of the second sliding groove, and a plurality of limiting grooves are formed in the end face, facing the stabilizing plate, of the side plate;
when the spring is in a natural state, a limiting block is combined with each limiting groove;
The driving assembly is used for driving the stabilizing plate to overcome the elasticity of the spring and move towards the direction away from the side plate, so that the limiting block is separated from the limiting groove.
Further, the length of the limiting block is smaller than the width of the second sliding groove, and after the limiting block is separated from the limiting groove, the driving assembly enables the position of the stabilizing plate to be kept unchanged, so that a part of the side plate is located in the second sliding groove.
Further, the driving assembly includes:
the pull ropes are connected with adjacent sliding blocks between adjacent different motors;
The linkage block is in sliding connection with a fourth sliding groove arranged on the surface of the shell, the pull rope bypasses the linkage block, and when the linkage block moves towards the outer direction of the driving ring, the linkage block drives the sliding block to compress the spring through the pull rope;
The other end of the hinging rod is hinged with the side face of the connecting ring;
When the connecting ring is driven to move towards the direction of the shell under the action of external force, the hinge rod pushes the linkage block to move towards the external direction of the driving ring.
Further, the device also comprises a cylinder fixed on the outer surface of the shell, and an output shaft of the cylinder is fixed on the side surface of the connecting ring, facing the shell.
The invention has the beneficial effects that: when the diameter of the circular area is equal to the diameter of the copper pipe to be milled, the motor is started to drive the turntable to rotate, the milling cutter mills the surface of the copper pipe when the copper pipe passes through the circular area, the at least three turntable can support the copper pipe when the copper pipe is milled, when the diameter of the copper pipe to be milled changes, the adjusting part drives all motors to slide along the corresponding first sliding grooves, so that the diameter of the circular area changes, and when the diameter of the circular area is equal to the diameter of the copper pipe to be milled, the adjusting part stops adjusting, and through the device, the diameter of the circular area can be adjusted outside the shell to adapt to copper pipes with different specifications, thereby reducing the operation difficulty and saving the operation time.
Drawings
For a clearer description of one or more embodiments of the present description or of the solutions of the prior art, the drawings that are necessary for the description of the embodiments or of the prior art will be briefly described, it being apparent that the drawings in the description below are only one or more embodiments of the present description, from which other drawings can be obtained, without inventive effort, for a person skilled in the art.
FIG. 1 is a front cross-sectional view of a specific implementation of an embodiment of the present invention;
FIG. 2 is a front view of a specific implementation of an embodiment of the present invention;
FIG. 3 is an enlarged view of a stabilizer plate in an embodiment of the present invention;
fig. 4 is a side view of a connection ring in a specific implementation of an embodiment of the invention.
1, A shell; 2. perforating; 3. a turntable; 4. a milling cutter; 5. a first chute; 6. a motor; 7. a drive ring; 8. a linkage rod; 9. a side plate; 10. a stabilizing plate; 11. a second chute; 12. a third chute; 13. a spring; 14. a slide block; 15. a limiting block; 16. a limit groove; 17. a fourth chute; 18. a linkage block; 19. a pull rope; 20. a hinge rod; 21. a connecting ring; 22. a cylinder; 23. and a fixed block.
Detailed Description
For the purposes of promoting an understanding of the principles and advantages of the disclosure, reference will now be made in detail to the following specific examples.
It is noted that unless otherwise defined, technical or scientific terms used in one or more embodiments of the present disclosure should be taken in a general sense as understood by one of ordinary skill in the art to which the present disclosure pertains. The use of the terms "first," "second," and the like in one or more embodiments of the present description does not denote any order, quantity, or importance, but rather the terms "first," "second," and the like are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.
In view of the above object, a first aspect of the present invention provides an embodiment of an adjusting device for a copper pipe face milling machine, as shown in fig. 1 and 2, including:
A housing 1, wherein the housing 1 is provided with a perforation 2 penetrating through the front end face and the rear end face of the housing 1, and is used for enabling a copper pipe to pass through;
At least three rotary tables 3 surrounding the periphery of the through hole 2 and motors 6 with output shafts fixedly connected with the centers of the side surfaces of the rotary tables 3, wherein a circular area is formed between the opposite side surfaces of each rotary table 3, the distances from the center of each rotary table 3 to the center of the through hole 2 are equal, the central axis of the circular area is coincident with the central axis of the through hole 2, the diameter of the circular area is equal to the diameter of a copper pipe to be milled, the motors 6 are positioned outside the shell 1, and the output shafts of the motors 6 penetrate through a first chute 5 arranged on the shell 1;
a milling cutter 4, wherein the milling cutter 4 is arranged on the side surface of at least one turntable 3 and is used for milling the surface of the copper pipe passing through the perforation 2;
and the adjusting part is arranged outside the shell 1 and used for driving the motor 6 to slide along the first sliding groove 5, so that the diameter of the circular area is changed to adapt to copper pipes with different specifications.
In this embodiment, when the diameter of the circular area is equal to the diameter of the copper pipe to be milled, the motor 6 starts to drive the turntable 3 to rotate, when the copper pipe passes through the circular area, the milling cutter 4 mills the surface of the copper pipe, the at least three turntable 3 can support the copper pipe when the copper pipe is milled, when the diameter of the copper pipe to be milled changes, the adjusting part drives all the motors 6 to slide along the corresponding first sliding grooves 5, so that the diameter of the circular area changes, when the diameter of the circular area is equal to the diameter of the copper pipe to be milled, the adjusting part stops adjusting, through the device, the diameter of the circular area can be adjusted outside the shell 1 to adapt to copper pipes of different specifications, thereby reducing the operation difficulty and saving the operation time.
As an embodiment, as shown in fig. 2, the adjusting part includes:
The motor comprises a driving ring 7 positioned outside the shell 1 and at least three fixing blocks 23 fixed on the outer side surface of the shell 1, wherein the fixing blocks 23 are provided with sliding holes, the driving ring 7 is in sliding connection with the sliding holes, gaps are reserved between the side surface of the driving block facing the shell 1 and the surface of the shell 1, and the motor 6 is positioned in the driving ring 7;
The linkage rod 8 that passes the clearance, the one end of linkage rod 8 is fixed in curb plate 9, and the side of linkage rod 8 towards drive ring 7 is equipped with first screw thread, the side of drive ring 7 towards linkage rod 8 is equipped with the second screw thread, first screw thread and second screw thread assorted drive linkage rod 8 is close to or keeps away from perforation 2 when drive ring 7 rotates.
In this embodiment, when the diameter of the circular area needs to be adjusted, the driving ring 7 is rotated by external force to drive the linkage rod 8 to approach or depart from the perforation 2, so as to achieve the purpose of adjusting the diameter of the circular area.
As an embodiment, as shown in fig. 2 and 3, further includes:
The stabilizing plate 10 is arranged on the left side and the right side of the side plate 9, and the sliding block 14 is fixed on the side surface of the stabilizing plate 10 facing the shell 1, the sliding block 14 is positioned in the third sliding groove 12 arranged on the surface of the shell 1, the sliding block 14 is in sliding connection with the third sliding groove 12, and the end surface of the stabilizing plate 10 facing the side plate 9 is provided with a second sliding groove 11;
A spring 13 with one end fixed to the slider 14, and the other end of the spring 13 is fixed to the bottom of the third chute 12;
The limiting blocks 15 are fixed on the side walls of the second sliding grooves 11 facing the side plates 9, and a plurality of limiting grooves 16 are formed in the end faces of the side plates facing the stabilizing plates 10;
When the spring 13 is in a natural state, a limiting block 15 is combined with each limiting groove 16;
the driving component is used for driving the stabilizing plate 10 to move away from the side plate 9 against the elastic force of the spring 13, so that the limiting block 15 is separated from the limiting groove 16.
In this embodiment, when milling normally, under the action of the spring 13, a limiting block 15 is combined with each limiting groove 16, so that when the motor 6 rotates, the turntable 3 is ensured to be stable, when the diameter of the circular area needs to be adjusted, the driving assembly drives the stabilizing plate 10 to move away from the side plate 9 against the elastic force of the spring 13, so that the limiting block 15 in the limiting groove 16 is separated from the corresponding limiting groove 16, then the driving ring 7 is rotated to complete the adjustment, after the adjustment, the driving assembly is restored to the original position, at this time, the stabilizing plate 10 is restored to the original position under the action of the spring 13, and at this time, the limiting groove 16 is combined with another part of limiting blocks 15.
In addition, as shown in fig. 3, the length of the limiting block 15 is smaller than the width of the second sliding groove 11, after the limiting block 15 is separated from the limiting groove 16, the driving assembly keeps the position of the stabilizing plate 10 unchanged, so that a part of the side plate 9 is located in the second sliding groove 11, and thus the motor 6 is stabilized when the motor 6 slides along the first sliding groove 5.
As an embodiment, as shown in fig. 2 and 4, the driving assembly includes:
A pull rope 19, between adjacent different motors 6, the pull rope 19 is connected with adjacent sliding blocks 14;
the linkage block 18 corresponds to the pull rope 19, the linkage block 18 is in sliding connection with the fourth chute 17 arranged on the surface of the shell 1, the pull rope 19 bypasses the linkage block 18, and when the linkage block 18 moves towards the outer direction of the driving ring 7, the linkage block 18 drives the sliding block 14 to compress the spring 13 through the pull rope 19;
A hinge rod 20 and a connecting ring 21, one end of which is hinged with the linkage block 18, and the other end of the hinge rod 20 is hinged with the side surface of the connecting ring 21;
in this embodiment, when the diameter of the circular area needs to be adjusted, the connecting ring 21 is driven to move towards the housing 1 under the action of external force, and at this time, the hinge rod 20 pushes the linkage block 18 to move towards the outer direction of the driving ring 7, so that the sliding block 14 can be driven by the pull rope 19 to overcome the elastic force of the spring 13.
In addition, as shown in fig. 4, a cylinder 22 fixed to the outer surface of the housing 1 is further included, and an output shaft of the cylinder 22 is fixed to a side surface of the connection ring 21 facing the housing 1, and an external force is applied to the connection ring 21 through the cylinder 22.
Those of ordinary skill in the art will appreciate that: the discussion of any of the embodiments above is merely exemplary and is not intended to suggest that the scope of the disclosure, including the claims, is limited to these examples; combinations of features of the above embodiments or in different embodiments are also possible within the spirit of the present disclosure, steps may be implemented in any order, and there are many other variations of the different aspects of one or more embodiments described above which are not provided in detail for the sake of brevity.
The present disclosure is intended to embrace all such alternatives, modifications and variances which fall within the broad scope of the appended claims. Any omissions, modifications, equivalents, improvements, and the like, which are within the spirit and principles of the one or more embodiments of the disclosure, are therefore intended to be included within the scope of the disclosure.

Claims (5)

1. An adjusting device for a copper pipe face milling machine, which is characterized by comprising:
the shell is provided with perforations penetrating through the front end face and the rear end face of the shell, and the shell is used for enabling the copper pipe to penetrate through;
The rotary table and the output shaft around the periphery of the perforation are fixedly connected with the centers of the side surfaces of the rotary table, a circular area is formed between the opposite side surfaces of each rotary table, the distances from the center of each rotary table to the center of the perforation are equal, the central axis of the circular area is coincident with the central axis of the perforation, the diameter of the circular area is equal to the diameter of a copper pipe to be milled, the motor is positioned outside the shell, and the output shaft of the motor penetrates through a first chute arranged on the shell;
the milling cutter is arranged on the side face of at least one turntable and is used for milling the surface of the copper pipe penetrating through the perforation;
the adjusting part is arranged outside the shell and used for driving the motor to slide along the first sliding groove, so that the diameter of the circular area is changed to adapt to copper pipes with different specifications;
the adjusting section includes:
A driving ring positioned outside the shell and at least three fixing blocks fixed on the outer side surface of the shell, a gap is formed between the side surface, facing the shell, of the driving block and the surface of the shell, and the motors are all positioned in the driving ring;
The linkage rod penetrates through the gap, one end of the linkage rod is fixed on the side plate, a first thread is arranged on the side surface of the linkage rod, facing the driving ring, of the linkage rod, a second thread is arranged on the side surface of the driving ring, facing the linkage rod, the first thread is matched with the second thread, and the linkage rod is driven to be close to or far away from the through hole when the driving ring rotates;
When the diameter of the circular area is equal to the diameter of the copper pipe to be milled, the motor is started to drive the turntable to rotate, when the copper pipe passes through the circular area, the milling cutter mills the surface of the copper pipe, the at least three arranged turntables can support the copper pipe when the copper pipe is milled, when the diameter of the copper pipe to be milled is changed, the adjusting part drives all the motors to slide along the corresponding first sliding grooves, so that the diameter of the circular area is changed, when the diameter of the circular area is equal to the diameter of the copper pipe to be milled, the adjusting part stops adjusting, and the diameter of the circular area can be adjusted outside the shell to adapt to copper pipes with different specifications; when the diameter of the circular area needs to be adjusted, the driving ring is enabled to rotate through external force, and the linkage rod is driven to approach or depart from the perforation, so that the purpose of adjusting the diameter of the circular area is achieved.
2. An adjustment device for a copper tube face milling machine as recited in claim 1, further comprising:
the stabilizing plates are arranged on the left side and the right side of the side plate, and the sliding blocks are fixed on the side surfaces of the stabilizing plates, facing the shell, and are positioned in third sliding grooves formed in the surface of the shell and are in sliding connection with the third sliding grooves, and second sliding grooves are formed in the end surfaces, facing the side plates, of the stabilizing plates;
One end of the spring is fixed on the sliding block, and the other end of the spring is fixed on the bottom of the third sliding groove;
the limiting blocks are fixed on the side wall, facing the side plate, of the second sliding groove, and a plurality of limiting grooves are formed in the end face, facing the stabilizing plate, of the side plate;
when the spring is in a natural state, a limiting block is combined with each limiting groove;
The driving assembly is used for driving the stabilizing plate to overcome the elasticity of the spring and move towards the direction away from the side plate, so that the limiting block is separated from the limiting groove.
3. An adjustment device for a copper tube face milling machine as recited in claim 2, wherein the stop block has a length less than the width of the second chute, and the drive assembly maintains the position of the stabilizing plate unchanged after the stop block is separated from the stop slot such that a portion of the side plate is positioned within the second chute.
4. An adjustment device for a copper tube face milling machine according to claim 2 or 3, wherein the drive assembly comprises:
the pull ropes are connected with adjacent sliding blocks between adjacent different motors;
The linkage block is in sliding connection with a fourth sliding groove arranged on the surface of the shell, the pull rope bypasses the linkage block, and when the linkage block moves towards the outer direction of the driving ring, the linkage block drives the sliding block to compress the spring through the pull rope;
The other end of the hinging rod is hinged with the side face of the connecting ring;
When the connecting ring is driven to move towards the direction of the shell under the action of external force, the hinge rod pushes the linkage block to move towards the external direction of the driving ring.
5. An adjustment device for a copper tube face milling machine as recited in claim 4, further comprising a cylinder secured to an outer surface of the housing, an output shaft of the cylinder being secured to a side surface of the connecting ring facing the housing.
CN202110387481.6A 2021-04-09 2021-04-09 Adjusting device for copper pipe face milling machine Active CN113210684B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110387481.6A CN113210684B (en) 2021-04-09 2021-04-09 Adjusting device for copper pipe face milling machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110387481.6A CN113210684B (en) 2021-04-09 2021-04-09 Adjusting device for copper pipe face milling machine

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CN113210684A CN113210684A (en) 2021-08-06
CN113210684B true CN113210684B (en) 2024-08-30

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN214977994U (en) * 2021-04-09 2021-12-03 芜湖精艺铜业有限公司 Adjusting device for copper pipe face milling machine

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Publication number Priority date Publication date Assignee Title
ITUA20163279A1 (en) * 2016-05-09 2017-11-09 Scm Group Spa MILLING MACHINE WITH ADJUSTABLE COPYER
CN205928030U (en) * 2016-08-22 2017-02-08 德阳宏源机电工程有限责任公司 Single motor that mills boring integration lathe is from moving first mechanism
CN107378576A (en) * 2017-08-27 2017-11-24 中信戴卡股份有限公司 A kind of wheel milling window fixture
US10500654B2 (en) * 2018-01-11 2019-12-10 Kennametal Inc Modular cutting tool
CN210615237U (en) * 2019-07-08 2020-05-26 苏州用朴合金工具有限公司 Diameter-adjustable drilling and milling integrated cutter

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN214977994U (en) * 2021-04-09 2021-12-03 芜湖精艺铜业有限公司 Adjusting device for copper pipe face milling machine

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