CN215845126U

CN215845126U - Double-cam driving structure of hydraulic pipe fitting machining tool

Info

Publication number: CN215845126U
Application number: CN202121708854.7U
Authority: CN
Inventors: 蒋友荣
Original assignee: Zhejiang Value Mechanical & Electrical Products Co ltd
Current assignee: Zhejiang Value Mechanical & Electrical Products Co ltd
Priority date: 2021-07-26
Filing date: 2021-07-26
Publication date: 2022-02-18
Anticipated expiration: 2031-07-26

Abstract

The utility model discloses a pipe fitting machining tool, which provides a double-cam driving structure of a hydraulic pipe fitting machining tool with compact and reasonable structure, high oil pumping efficiency and stable and reliable operation, and solves the technical problems of complicated driving structure, low oil pumping efficiency of transmission and plunger pistons, large whole machine volume, inconvenience in operation and use and the like of the pipe fitting machining tool in the prior art.

Description

Double-cam driving structure of hydraulic pipe fitting machining tool

Technical Field

The utility model relates to a pipe fitting machining tool, in particular to a double-cam driving structure of a hydraulic pipe fitting machining tool, which is compact and reasonable in structure and stable and reliable in operation.

Background

The existing driving structure of the hydraulic pipe fitting processing tool generally adopts a planetary gear speed reducing mechanism or a roller friction planetary speed reducing mechanism, wherein the planetary gear speed reducing mechanism has a complex structure, is not convenient to manufacture and install and is inconvenient to disassemble, the part processing precision requirement in the roller friction planetary speed reducing mechanism is high, the heat productivity in the working process is large, the transmission and plunger pump oil efficiency is low, the processing efficiency is influenced, and the two structures are coaxially installed with a motor, so that the whole electric hydraulic tool is too large or too long, and is inconvenient to carry, operate and use.

Disclosure of Invention

The utility model mainly provides a double-cam driving structure of a hydraulic pipe fitting machining tool, which has the advantages of compact and reasonable structure, high oil pumping efficiency and stable and reliable operation, and solves the technical problems of complicated driving structure, low oil pumping efficiency of transmission and plunger pistons, large whole machine volume, inconvenience in operation and use and the like of the pipe fitting machining tool in the prior art.

The technical problem of the utility model is mainly solved by the following technical scheme: a double-cam driving structure of a hydraulic pipe fitting machining tool comprises a working cavity on a body, wherein the inner side end of a plunger is inserted in the working cavity in a sliding mode, a worm gear assembly is arranged on the body corresponding to the outer side end of the plunger, a worm in the worm gear assembly is connected with the output end of a driving motor, a double-headed cam is arranged on a rotating shaft of a helical gear, and the outer ring surface of the double-headed cam abuts against the outer side end of the plunger and drives the plunger to slide towards the working cavity. The motor is connected with the worm and gear assembly, the worm and gear assembly can be composed of a worm and gear and can also be composed of a bevel gear and a worm, the motor drives a rotating shaft of the bevel gear through the worm and gear assembly, the rotating shaft drives the coaxially arranged double-head cam to rotate, because the outer annular surface of the double-head cam is abutted to the outer end surface of the plunger, the convex surface on the double-head cam pushes the plunger to slide towards the working cavity to realize feeding discontinuously, and because the double-head cam is adopted, the double-head cam rotates for a circle to realize feeding twice, the transmission and plunger pumping efficiency is high, the plunger and the motor output shaft are arranged in a crossed mode, the space structure is compact and reasonable, meanwhile, the double raised heads on the cam can automatically balance centrifugal force, so that periodic vibration cannot be generated, and the whole machine can run more stably and reliably.

Preferably, the outer end part of the plunger corresponding to the double-headed cam is provided with a roller. The roller can reduce the friction force between the plunger and the double-head cam, and reduce the abrasion.

Preferably, the double-head cam comprises a circular base wheel, the outer ring surface of the base wheel extends outwards to form two arc-shaped raised heads, and the arc-shaped raised heads are distributed in a centrosymmetric mode. The arc-shaped raised heads are distributed in the central symmetry mode, so that the feed frequency is balanced and consistent, the centrifugal force can be completely balanced, the vibration is small during rotation, and the whole machine is ensured to run more stably and reliably.

Preferably, the outer circumferential surface of the arcuate nose and the outer circumferential surface of the base wheel maintain a smooth transition therebetween. The running acceleration of the plunger is smoother.

Preferably, the radial bisector of the double-headed cam passes through the axial center line of the plunger. When the radial bisector of the double-head cam passes through the axial lead of the plunger, the force application direction of the double-head cam is consistent with the sliding direction of the plunger.

Preferably, a compression return spring is attached to the plunger. The plunger keeps attaching to the bearing all the time through compressing the reset spring, thereby realizing oil absorption by utilizing the reset of the spring.

Therefore, the double-cam driving structure of the hydraulic pipe fitting machining tool has the following advantages:

1. the plunger and the output shaft of the motor are arranged in a crossed manner, so that the space structure is compact and reasonable;

2. the double-head cam drives the plunger, so that the transmission efficiency and the plunger oil pumping efficiency are high, the centrifugal force can be automatically balanced, the vibration is small during rotation, and the operation is stable and reliable;

3. the rollers are additionally arranged on the end faces of the plungers, so that the abrasion of the plungers and the double-head cam can be reduced, the friction resistance can be reduced, and the energy consumption is saved.

Description of the drawings:

FIG. 1 is a schematic diagram of the dual cam drive configuration of the hydraulic pipe machining tool of the present invention;

fig. 2 is a schematic structural view of the double-headed cam of the present invention.

The specific implementation mode is as follows:

the technical scheme of the utility model is further specifically described by the following embodiments and the accompanying drawings.

Example (b):

as shown in fig. 1, the double cam driving structure of the hydraulic pipe fitting processing tool of the present invention comprises a body 1 of the pipe fitting processing tool and a working chamber 2 on the body 1, wherein the inner side end of a plunger 3 is slidably inserted into the working chamber 2, the outer side end of the plunger 3 extends out of the working chamber 2, a roller 6 is arranged in the middle of the outer end surface of the plunger 3, a compression return spring 8 is sleeved outside the plunger 3, the inner side end of the compression return spring 7 abuts against a corresponding annular step in the working chamber 2, the outer side end abuts against a flange of the outer side end of the plunger 3, a worm gear assembly is arranged on the body 1 corresponding to the outer side of the roller 6, a worm 42 in the worm gear assembly is connected with an output end of a driving motor, a double-headed cam 5 is sleeved and fixed on a rotating shaft 43 of a helical gear 41, as shown in fig. 2, the double-headed cam 5 comprises a circular base wheel 51, an outer convex ring of the base wheel 51 integrally extends outwards to form two arc-shaped ends 52, the two arc raised heads 52 are distributed in central symmetry, the outer ring surface of the arc raised heads 52 is in smooth transition connection with the outer ring surface of the base wheel 51, the outer ring surface of the double-head cam 5 is abutted against the outer ring surface of the roller 6, the radial bisector surface of the double-head cam 5 penetrates through the axial lead of the plunger 3, and the rotating shaft of the roller 6 is coplanar and parallel to the rotating shaft 43 of the helical gear 41.

The specific embodiments described herein are merely illustrative of the principles of the utility model. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the utility model as defined in the appended claims.

Claims

1. The utility model provides a hydraulic pressure pipe fitting machining tool's two cam drive structure, includes working chamber (2) on body (1), and the medial extremity that is pegging graft plunger (3) slides in working chamber (2), its characterized in that: the body (1) corresponding to the outer side end of the plunger (3) is provided with a worm gear assembly, a worm (42) in the worm gear assembly is connected with the output end of a driving motor, a double-headed cam (5) is arranged on a rotating shaft (43) of the helical gear (41), and the outer ring surface of the double-headed cam (5) is abutted against the outer side end of the plunger (3) and drives the plunger (3) to slide towards the working cavity (2).

2. The dual cam drive configuration for a hydraulic pipe machining tool of claim 1, wherein: and the outer end part of the plunger (3) corresponding to the double-head cam (5) is provided with a roller (6).

3. The dual cam drive configuration for a hydraulic pipe machining tool of claim 1, wherein: the double-head cam (5) comprises a circular base wheel (51), the outer ring surface of the base wheel (51) extends outwards to form two arc-shaped raised heads (52), and the arc-shaped raised heads (52) are distributed in a centrosymmetric mode.

4. The dual cam drive configuration for a hydraulic pipe machining tool of claim 3, wherein: the outer annular surface of the arc-shaped raised head (52) and the outer annular surface of the base wheel (51) are kept in smooth transition connection.

5. The dual cam drive configuration for a hydraulic pipe machining tool of claim 1, wherein: the radial middle section of the double-head cam (5) passes through the axial lead of the plunger (3).

6. The dual cam drive configuration for a hydraulic pipe machining tool of claim 1, wherein: the plunger (3) is sleeved with a compression return spring (7).