CN213195341U

CN213195341U - Expanding rod and expanding machine

Info

Publication number: CN213195341U
Application number: CN202021452788.7U
Authority: CN
Inventors: 王煜翥; 王朝瑞
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-07-21
Filing date: 2020-07-21
Publication date: 2021-05-14
Anticipated expiration: 2030-07-21

Abstract

The utility model provides an expanding rod and expanding machine, expanding rod include the pole body and link establish the screw thread section at pole body both ends, and the screw thread section has the edge the axially extended through-hole of expanding rod, be equipped with the edge on the surface of pole body the axially extended recess of expanding rod, just the through-hole with the recess corresponds to communicate with each other and forms oil pipe passageway on the expanding rod. The utility model is used for solve and process lubricating oil transfer passage on overlength reducing pole among the prior art, make the problem that the degree of difficulty is big, the processing cost is high.

Description

Expanding rod and expanding machine

Technical Field

The utility model relates to a machining field especially relates to an expanding rod and expanding machine.

Background

The expanding machine utilizes the cone expanding head to expand in the steel pipe, so that the inner diameter of the steel pipe is expanded, the forming pressure and the welding stress of the steel pipe can be eliminated, and the inner diameter of the whole section of the steel pipe is ensured to be consistent. The expanding head of the expanding machine needs lubricating oil for lubrication in the expanding process, at present, the lubricating oil is conveyed through a through hole in the middle of a pull rod, for an overlong pull rod, the through hole is difficult to machine in the center of the pull rod, the manufacturing difficulty is higher, and the machining cost is far higher than that of a through hole with a common length.

Therefore, a new lubrication channel is needed to deliver the lubrication oil.

SUMMERY OF THE UTILITY MODEL

In view of the above shortcomings of the prior art, an object of the present invention is to provide an expanding rod and an expanding machine for solving the problems of large manufacturing difficulty and high processing cost of processing a lubricant oil conveying channel on an ultra-long expanding rod in the prior art.

In order to realize above-mentioned purpose and other relevant purposes, the utility model provides an expanding rod, expanding rod include the pole body and link to establish the screw thread section at pole body both ends, and the screw thread section has the edge the axially extended through-hole of expanding rod, be equipped with the edge on the surface of pole body the axially extended recess of expanding rod, just the through-hole with the recess corresponds to communicate with each other and forms oil pipe passageway on the expanding rod.

Preferably, the cross-sectional shape of the groove is a circular arc.

Preferably, the through hole and the groove are connected through a section of inclined groove.

Preferably, the through hole is connected with the groove through a through hole perpendicular to the axial direction of the diameter enlarging rod.

Preferably, the axial length of the through bore is greater than the axial length of the threaded section.

Preferably, the thread section is provided with a plurality of through holes, all the through holes are parallel to each other, the number of the grooves is the same as that of the through holes, and the grooves and the through holes are in one-to-one correspondence.

The utility model also provides an expander, include: the diameter expanding rod, the supporting sleeve, the diameter expanding head and the driving mechanism are arranged, the supporting sleeve is provided with a connecting hole, the diameter expanding rod is arranged in the connecting hole in a sliding mode, a thread section of the diameter expanding rod is connected with the driving mechanism through a connecting nut, a limiting nut is arranged on the other thread section of the diameter expanding rod, and the diameter expanding head is arranged between the supporting sleeve and the limiting nut.

As described above, the utility model discloses an expanding rod and expanding machine has following beneficial effect:

the reaming pole 2 needs lubricating oil to lubricate in the course of the work, and traditional reaming pole 2 need process the perforation that runs through whole reaming pole 2, if the reaming pole 2 is very long, then it not only is difficult to process, and the working costs is high to perforate, the utility model discloses only with the screw thread section processing through-hole 21 of reaming pole 2, at pole body surface machining recess 22, make through-hole 21 and recess 22 correspond and communicate with each other to this forms the oil pipe passageway of reaming pole 2, has avoided the processing of overlength through-hole, has alleviateed the degree of difficulty of processing, has reduced the expense of processing.

Drawings

Fig. 1 is a schematic structural view of an expanding machine according to the present embodiment.

Fig. 2 is a schematic structural view of a diameter-enlarging rod according to the present embodiment.

Fig. 3 is a cross-sectional view taken at a-a in fig. 2.

Fig. 4 is a cross-sectional view taken at B-B in fig. 2.

Fig. 5 is a schematic view of fig. 2 in the direction of P.

1 connecting nut

2 expanding rod

21 through hole

22 groove

3 support sleeve

4 expanding head

41 expanding block

42 cone mechanism

5 limiting nut

Detailed Description

The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.

As shown in fig. 2, the utility model provides an expanding rod, expanding rod 2 includes the pole body and links to establish the screw thread section at the pole body both ends, and the screw thread section has along expanding rod 2's axial extension's through-hole 21, is equipped with on the surface of pole body along expanding rod 2's axial extension's recess 22, and through-hole 21 and recess 22 correspond and communicate with each other and form the oil pipe passageway on expanding rod 2.

Specifically, in the embodiment, 3 through holes 21 are uniformly formed in the threaded section in the circumferential direction, 3 grooves 22 are uniformly formed in the shaft body in the circumferential direction, and the through holes 21 are respectively communicated with the grooves 22 in a one-to-one correspondence manner; as shown in fig. 3, in the schematic structural view of the diameter-expanding rod 2 along the P direction in this embodiment, the threaded section of the diameter-expanding rod 2 is provided with three through holes 21 uniformly distributed in the circumferential direction, the through holes 21 are arranged to avoid the threaded section, the threaded section is relatively short, the through holes 21 are relatively simple to process, the axial length of the through holes 21 is greater than that of the threaded section, and the groove is arranged to avoid the threaded section.

In the embodiment, as shown in fig. 5, which is a view along B-B of the expanding hole, three grooves 22 are uniformly formed on the body of the expanding rod 2 along the outer circumferential surface, the cross-sectional shape of the groove 22 is circular arc, and each groove 22 is correspondingly communicated with one through hole 21. In the embodiment shown in fig. 4, which shows the diameter-enlarging rod 2 along a-a, the through-hole 21 and the groove 22 are connected by a section of inclined groove, which facilitates the circulation of the lubricating oil. As another embodiment, the through hole 21 and the groove 22 may be connected by a through hole perpendicular to the axial direction of the diameter-enlarging rod 2, and the through hole is convenient for processing.

As shown in fig. 1, the utility model also provides an expanding machine, include: the diameter expanding rod 2, the supporting sleeve 3, the diameter expanding head 4 and the driving mechanism are arranged in the mode that the supporting sleeve 3 is provided with a connecting hole, the diameter expanding rod 2 is arranged in the connecting hole in a sliding mode, one thread section of the diameter expanding rod 2 is connected with the driving mechanism through the connecting nut 1, the other thread section of the diameter expanding rod 2 is provided with the limiting nut 5, and the diameter expanding head 4 is arranged between the supporting sleeve 3 and the limiting nut 5.

In this embodiment, the expanding head 4 includes an expanding block 41 and a cone mechanism 42, the supporting sleeve 3 plays a role of supporting the expanding rod 2, as shown in fig. 1, after the pipe to be expanded is sent into the expanding machine, the driving mechanism pushes the expanding rod 2 to move leftward, the cone mechanism 42 moves leftward under the driving of the expanding rod 2, the expanding block 41 expands radially outward under the driving of the cone structure, the expanding block 41 continues to expand outward after contacting the pipe to be expanded, so that the pipe to be expanded is slightly deformed to achieve the purpose of rounding and sizing, after the pipe to be expanded is expanded to a desired outer diameter, the driving mechanism pushes the expanding rod 2 to move rightward, the cone mechanism 42 moves rightward under the driving of the expanding rod 21, and the expanding block 41 retracts radially to complete the expanding.

To sum up, the utility model relates to an expanding rod and expanding machine, expanding rod 2 need lubricating oil in the course of the work, and traditional expanding rod 2 need process the perforation that runs through whole expanding rod 2, if expanding rod 2 is very long, then perforate not only be difficult to process, and the processing cost is high, the utility model discloses only with expanding rod 2's screw thread section processing through-hole 21, at pole body surface machining recess 22, make through-hole 21 correspond with recess 22 and communicate with each other to this forms expanding rod 2's oil pipe passageway, has avoided the processing of overlength through-hole, has alleviateed the degree of difficulty of processing, has reduced the expense of processing.

Therefore, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. The diameter expanding rod is characterized in that the diameter expanding rod (2) comprises a rod body and thread sections which are connected to two ends of the rod body, the thread sections are provided with through holes (21) which extend along the axial direction of the diameter expanding rod (2), grooves (22) which extend along the axial direction of the diameter expanding rod (2) are formed in the outer surface of the rod body, and the through holes (21) and the grooves (22) are correspondingly communicated to form oil pipe channels in the diameter expanding rod (2).

2. An expanding rod according to claim 1, characterised in that: the cross section of the groove (22) is arc-shaped.

3. An expanding rod according to claim 1, characterised in that: the through hole (21) is connected with the groove (22) through a section of inclined groove.

4. An expanding rod according to claim 1, characterised in that: the through hole (21) is connected with the groove (22) through a through hole perpendicular to the axial direction of the diameter expanding rod (2).

5. An expanding rod according to claim 1, characterised in that: the axial length of the through hole (21) is greater than the axial length of the threaded section.

6. An expanding rod according to claim 1, characterised in that: the thread section is internally provided with a plurality of through holes (21), all the through holes (21) are parallel to each other, and the number of the grooves (22) is the same as that of the through holes (21) and the grooves correspond to the through holes one to one.

7. An expanding machine, comprising: the diameter expanding device comprises a supporting sleeve (3), a diameter expanding head (4), a driving mechanism and the diameter expanding rod (2) according to any one of claims 1 to 6, wherein the supporting sleeve (3) is provided with a connecting hole, the diameter expanding rod (2) is arranged in the connecting hole in a sliding mode, a threaded section of the diameter expanding rod (2) is connected with the driving mechanism through a connecting nut (1), the other threaded section of the diameter expanding rod (2) is provided with a limiting nut (5), and the diameter expanding head (4) is arranged between the supporting sleeve (3) and the limiting nut (5).