CN110961519B

CN110961519B - Pipe end machining center for performing annular punching on pipe orifice

Info

Publication number: CN110961519B
Application number: CN201911196929.5A
Authority: CN
Inventors: 陆志伟
Original assignee: Ningbo Triz Automatic Equipment Co ltd
Current assignee: Zhejiang Juzhi Laser Equipment Co ltd
Priority date: 2019-11-29
Filing date: 2019-11-29
Publication date: 2022-01-28
Anticipated expiration: 2039-11-29
Also published as: CN110961519A

Abstract

The invention discloses a pipe end machining center, which comprises a base, wherein a group of guide rails are laid on the top surface of the base, a sliding block is connected on the guide rails in a sliding manner, a tool rest and a driving box body are supported on the sliding block, a tool bit is detachably fixed at the front part of the tool rest, a transverse motor and a vertical motor are arranged in the driving box body, and the tool bit is respectively driven by the transverse motor and the vertical motor to horizontally or vertically feed; still be provided with the mounting bracket on the top surface of base, the mounting bracket is located the front portion of guide rail, the cylinder is being fixed at the mounting bracket top, be provided with double-layered mould in the mounting bracket, press from both sides the mould compound die by cylinder drive, the pipe fitting that will treat processing is fixed in the mounting bracket, be formed with the die cavity in pressing from both sides the mould, orificial outer wall laminating is on the inner wall of die cavity, be formed with the blanking chamber between die cavity and orificial outer wall, the accent width in blanking chamber is the notch width of required die-cut U-shaped groove on the mouth of pipe promptly, the tool bit can stretch into in the mouth of pipe under motor drive, die-cut the mouth of pipe afterwards.

Description

Pipe end machining center for performing annular punching on pipe orifice

Technical Field

The invention relates to the technical field of pipe end machining, in particular to a pipe end machining center for performing annular punching on a pipe opening.

Background

In the prior art, when a U-shaped groove is formed at a pipe orifice, laser cutting is generally adopted. However, the cost of laser cutting is high, and the cost of the die cutting process is much lower than that of laser cutting.

It is also difficult to die cut a tube orifice because the punch causes a large impact force on the tube wall during the die cutting process, while the tube is generally hollow and the impact force from such die cutting without internal support causes the tube wall to collapse near the cut.

For example, in chinese utility model patent No. CN201721277818.3, a device for punching a trailing arm of an automobile is disclosed, in which a filling part is inserted into a pipe opening, and when a punching rod punches a hole, the filling part supports the pipe wall near the punching hole.

However, the method of this patent is only suitable for punching, the punching area of the punching is very small, the required punching force is much smaller than the impact force when punching the U-shaped groove, and in the punching process, only a blanking hole needs to be formed on the filling part, and when punching the U-shaped groove, if a blanking groove adapted to the U-shaped groove is formed on the filling part, the stressed area of the filling part is greatly reduced, and under the condition that the impact force is greatly increased compared with the punching process and the stressed area is greatly reduced, the pressure applied to the unit area of the filling part is much larger than that of the punching process, which has a very high requirement on the material strength of the filling part, otherwise, the filling part cannot bear the huge pressure and is deformed, but in contrast to this, a user needs to mill a blanking groove with a large area on the filling part with high strength, which increases the processing difficulty and the production cost, the method is not suitable for the processing of the U-shaped groove.

Disclosure of Invention

The present invention is directed to provide a pipe end machining center for performing annular punching of a pipe opening in view of the above-mentioned technical situation.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a carry out die-cut pipe end machining center of hoop to mouth of pipe which characterized in that: the automatic feeding device comprises a base, wherein a group of guide rails are laid on the top surface of the base, a sliding block is connected on the guide rails in a sliding manner, a tool rest and a driving box body are supported on the sliding block, a tool bit is detachably fixed at the front part of the tool rest, a transverse motor and a vertical motor are arranged in the driving box body, and the tool bit is driven by the transverse motor and the vertical motor to horizontally or vertically feed;

still be provided with the mounting bracket on the top surface of base, the mounting bracket is located the front portion of guide rail, the cylinder is being fixed at the mounting bracket top, be provided with the clamp mould in the mounting bracket, press from both sides the mould compound die by cylinder drive, the pipe fitting that will treat processing is fixed in the mounting bracket, be formed with the die cavity in the clamp mould, orificial outer wall laminating is on the inner wall of die cavity, be formed with the blanking chamber between die cavity and orificial outer wall, the accent width in blanking chamber is the notch width of required die-cut U-shaped groove on the mouth of pipe promptly, the tool bit can stretch into in the mouth of pipe under motor drive, die-cut the mouth of pipe afterwards, waste material after the die-cut falls into in the blanking chamber.

As an improvement of the present invention, the tool bit includes a base plate fixed on a moving block, a housing is covered on the base plate, slide rods are supported at four corners of the base plate, a fixed frame is slidably connected on the slide rods, an upper die plate is fixed on the fixed frame, the upper die plate is located between the fixed frame and a top surface of the base plate, a punch is fixed on the upper die plate through bolts, a plurality of elastic washers are circumferentially arranged on a bottom surface of the upper die plate, a reinforcing plate is fixed at a bottom of the elastic washers, a tool is fixed at a bottom of the reinforcing plate through a screw, a cover plate is covered at a bottom of the reinforcing plate, the cover plate and the reinforcing plate form a closed chamber, the chamber is filled with lubricating oil, the tool is partially located in the chamber, and a piston plate is sleeved on a portion of the tool located in the chamber, be provided with the stop lever on the cavity bottom surface, the piston plate can descend to with the top contact of stop lever still the cover is equipped with the holding plate on the cutter, the holding plate is located the top of piston plate be formed with the liquid runner on the holding plate the through-hole has been seted up on the piston plate, the liquid runner with the through-hole is just right from top to bottom and intercommunication each other, and lubricating oil can pass through liquid runner and through-hole are in the upper and lower flow of piston plate.

As a further improvement of the invention, the front part of the cutter is formed with a tip, and the width of the tip is less than one fifth of the wide end of the front end of the cutter.

Compared with the prior art, the invention has the advantages that: the pipe wall is sequentially punched transversely or longitudinally from the inner wall of the pipe orifice by using the motor to drive the cutter head, so that a plurality of U-shaped grooves are cut along the circumferential direction of the pipe orifice.

Drawings

FIG. 1 is a schematic view of a tube end machining center according to an embodiment of the present invention;

FIG. 2 is a schematic view of the internal structure of the cutter head of FIG. 1;

fig. 3 is a partial schematic view of the cutting head of fig. 1.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

As shown in the attached drawings, the embodiment is a pipe end machining center for performing annular punching on a pipe orifice, and the pipe end machining center comprises a base 1, a group of guide rails 2 are laid on the top surface of the base, a sliding block 3 is connected on the guide rails in a sliding manner, a tool rest 4 and a driving box body 5 are supported on the sliding block, the tool rest and the driving box body can slide on the guide rails together with the sliding block, a tool bit 6 is detachably fixed at the front part of the tool rest, a transverse motor 7 and a vertical motor 8 are arranged in the driving box body, and the tool bit is driven to horizontally or vertically feed by the transverse motor and the vertical motor respectively;

still be provided with mounting bracket 9 on the top surface of base, the mounting bracket is located the front portion of guide rail, cylinder 10 is being fixed at the mounting bracket top, be provided with die clamping 11 in the mounting bracket, by cylinder drive die clamping compound die, the pipe fitting that will treat processing is fixed in the mounting bracket, be formed with the die cavity in the die clamping, orificial outer wall laminating is on the inner wall of die cavity, be formed with the blanking chamber between die cavity and orificial outer wall, the accent width in blanking chamber is the notch width of the required die-cut U-shaped groove on the mouth of pipe promptly, the tool bit can stretch into in the mouth of pipe under motor drive, die-cut the mouth of pipe afterwards, waste material after the die-cut falls into in the blanking chamber.

The cutter head comprises a base plate 61, a shell 62 covers the base plate, slide rods 63 are supported at four corners of the base plate, a fixing frame 64 is connected on the slide rods in a sliding mode, an upper die plate 65 is fixed on the fixing frame, the upper die plate is located between the fixing frame and the top surface of the base plate, a punch 66 is fixed on the upper die plate through bolts, a plurality of elastic gaskets 67 are further arranged on the bottom surface of the upper die plate along the circumferential direction, a reinforcing plate 68 is fixed at the bottom of each elastic gasket, a cutter 69 is fixed at the bottom of the reinforcing plate through bolts, a cover plate 70 is further covered at the bottom of the reinforcing plate, the cover plate and the reinforcing plate form a closed cavity, lubricating oil is filled in the cavity, the cutter part is located in the cavity, and a piston plate 71 is sleeved on the part of the cutter located in the cavity, the piston plate feeds along with the cutter, and the outward flange of piston plate is close the inner wall of cavity be provided with stop rod 72 on the cavity bottom surface, the piston plate can descend to with the top contact of stop rod still the cover is equipped with holding plate 73 on the cutter, the holding plate is located the top of piston plate be formed with liquid flow channel 74 on the holding plate through-hole 75 has been seted up on the piston plate, the liquid flow channel with the through-hole just from top to bottom just communicates each other, and lubricating oil can pass through liquid flow channel and through-hole are in the upper and lower flow of piston plate. The piston plate divides the cavity into an upper part and a lower part, when the piston plate is pressed down rapidly along with the cutter, lubricating oil can be pressed down by the piston plate, meanwhile, partial hydraulic oil enters the upper cavity along the through hole, the hydraulic pressure of the upper cavity is improved, and the damping and buffering effect on the cutter can be achieved.

The front of the tool is formed with a tip 76 whose width is less than one fifth of the wide end of the front end of the tool. The during operation, it punches a hole to move sharp-end down fast earlier, lateral shifting cutter cuts open the incision afterwards, press down by whole cutter again and carry out the punching press, through the incision of earlier stage, and through pouring into lubricating oil to the incision position, make incision position and its peripheral pipe wall frictional force descend, can reduce the power of dragging to near pipe wall when punching press like this, thereby prevent that the pipe wall from collapsing, in addition, the embodiment is punching press from inside to outside, the outer wall of pipe is wrapped up by die clamping, and die clamping is again provided drive power by high-power cylinder and supports its compound die, so its support intensity is enough to prevent collapsing of pipe wall.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.

Claims

1. The utility model provides a carry out die-cut pipe end machining center of hoop to mouth of pipe which characterized in that: the automatic feeding device comprises a base, wherein a group of guide rails are laid on the top surface of the base, a sliding block is connected on the guide rails in a sliding manner, a tool rest and a driving box body are supported on the sliding block, a tool bit is detachably fixed at the front part of the tool rest, a transverse motor and a vertical motor are arranged in the driving box body, and the tool bit is driven by the transverse motor and the vertical motor to horizontally or vertically feed;

the top surface of the base is also provided with a mounting frame, the mounting frame is positioned at the front part of the guide rail, an air cylinder is fixed at the top of the mounting frame, a clamping die is arranged in the mounting frame, the clamping die is driven by the air cylinder to be matched, a pipe fitting to be processed is fixed in the mounting frame, a die cavity is formed in the clamping die, the outer wall of the pipe orifice is attached to the inner wall of the die cavity, a blanking cavity is formed between the die cavity and the outer wall of the pipe orifice, the width of a cavity opening of the blanking cavity is the width of a notch of a U-shaped groove required to be punched on the pipe orifice, a tool bit can extend into the pipe orifice under the driving of a motor, then the pipe orifice is punched, and punched waste materials fall into the blanking cavity; the tool bit comprises a substrate, wherein the substrate is covered with a shell, four corners of the substrate are supported by slide rods, the slide rods are slidably connected with a fixing frame on the slide rods, an upper template is fixed on the fixing frame and positioned between the fixing frame and the top surface of the substrate, a punch is fixed on the upper template through bolts, a plurality of elastic gaskets are arranged on the bottom surface of the upper template along the circumferential direction, a reinforcing plate is fixed at the bottom of the elastic gaskets, a cutter is fixed at the bottom of the reinforcing plate through a screw, a cover plate is further covered at the bottom of the reinforcing plate, the cover plate and the reinforcing plate form a closed cavity, lubricating oil is filled in the cavity, the cutter is partially positioned in the cavity, a piston plate is sleeved on the part of the cutter positioned in the cavity, and a stop rod is arranged on the bottom surface of the cavity, the piston plate can descend to with the top contact of stop rod still the cover is equipped with the holding plate on the cutter, the holding plate is located the top of piston plate be formed with the liquid runner on the holding plate the through-hole has been seted up on the piston plate, the liquid runner with the through-hole is just right from top to bottom and intercommunication each other, and lubricating oil can pass through liquid runner and through-hole are in the upper and lower flow of piston plate.

2. The pipe end machining center of claim 1, wherein: the front part of the cutter is provided with a tip, and the width of the tip is less than one fifth of the width of the front end of the cutter.