CN205043021U - Pipe end machine tool axial positioning device - Google Patents

Abstract

The utility model discloses an axial positioning device for a pipe end processing machine tool, which comprises a "V"-shaped swing arm as a whole. The drive device for the swing arm to rotate around the inflection point is provided with a shaft end positioning block at the other end. The utility model has the advantages of simple structure and convenient use, which not only improves the positioning accuracy, but also meets the production needs of large batches and high efficiency.

Description

Axial positioning device of pipe end processing machine tool

technical field

The utility model relates to a positioning device, in particular to an axial positioning device for a pipe end processing machine tool.

Background technique

In the process of pipe processing, it is often necessary to position the pipe before processing. The function of pipe processing equipment is generally to carry out various styles of forming processing on one end or both ends of the pipe. At present, the commonly used pipe processing equipment on the market includes sliders and forming molds set on the sliders. First, the operator will each The root pipe is manually placed in a fixed position, then fixed, and finally the feed and retreat of the slider is driven by the oil cylinder, thereby driving the forming mold on the slider to form the end of the pipe on the station. However, on the one hand, there is an error between the position where the operator discharges the material and the actual processing position. On the other hand, due to the lack of a positioning device, the shape size of each pipe end is different, so subsequent reprocessing is required before it can be put into use. Not only the yield rate is reduced, but also the production cost is increased, and at the same time, it cannot meet the requirements of high-volume, high-efficiency, and high-precision production.

Utility model content

In view of this, the utility model provides an axial positioning device for a pipe end processing machine tool, which can not only improve the yield rate, but also meet the requirements of large-volume, high-efficiency, and high-precision production.

Its technical scheme is as follows:

An axial positioning device for a pipe end processing machine tool, comprising a swing arm in the shape of a "V" as a whole, the central inflection point of the swing arm is rotatably connected to the machine tool, and one end of the swing arm is connected to drive the swing arm around the inflection point. The rotating driving device is provided with a shaft end positioning block at the other end. By adopting the above structure, the error between the position of feeding each time and the actual processing station is avoided, so that the forming size of the pipe end each time can reach the expected standard.

Preferably, the driving device is a hydraulic cylinder or an air cylinder, including a cylinder fixed to the machine tool and a piston rod installed in the cylinder, and the swing arm is provided with a chute penetrating back and forth at the corresponding end of the piston rod, A pin shaft is provided at the end of the piston rod, and the pin shaft is slidably embedded in the slide groove. The reciprocating piston rod in the driving device moves in the chute through the pin shaft, and then drives the swing arm to rotate to realize the automatic positioning function.

Preferably, the shaft end positioning block is in the shape of a disk, and a screw is welded in the center of the disk, and the screw is threadedly engaged with the end of the swing arm away from the chute. The shaft end positioning block is fixed on one end of the swing arm through threads, and the position of the shaft end positioning block can be fine-tuned back and forth, which is convenient for positioning the pipe end and meets the high-precision processing requirements.

Preferably, a through hole is opened at the inflection point in the center of the swing arm, and a fixed shaft that can be rotated by the swing arm is pierced. The end of the fixed shaft is fixed to the machine tool, and a copper sleeve is embedded between the fixed shaft and the through hole. One end of the copper sleeve abuts against the shoulder at the end of the fixed shaft, and the other end is locked with the round nut through the retaining ring, and the gap between the copper sleeve, the shoulder and the retaining ring is 0.01-0.03mm. With such a structure, the swing arm and the copper sleeve can rotate around the fixed axis together, and the rotation is more stable, thereby making the positioning more accurate.

Beneficial effect:

The axial positioning device of the pipe end processing machine tool adopting the above technical scheme, on the one hand, has a simple design and structure, and is easy to operate and use; on the other hand, the positioning accuracy is improved, and at the same time, it also meets the large-scale and high-efficiency production scale.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a sectional view along line B-B of Fig. 1;

Fig. 3 is a structural schematic diagram of the swing arm in the utility model.

detailed description

Below in conjunction with embodiment and accompanying drawing, the utility model is further described.

The axial positioning device of the pipe end processing machine tool shown in Figure 1 includes a driving device 1 and a swing arm 2 that is rotated by the driving device 1. The driving device 1 can be a hydraulic cylinder or an air cylinder, preferably a hydraulic cylinder in this embodiment The cylinder barrel 3 of the hydraulic cylinder is fixed on the pipe end processing machine tool, and a reciprocating piston rod 4 is installed inside the cylinder barrel 3, and a "U"-shaped hinge seat 5 is fixed on the top end of the piston rod 4, and the pin shaft 6 pass through the "U"-shaped hinge seat 5 and the chute 21 at one end of the swing arm 2 in turn, the other end of the swing arm 2 is provided with a shaft end positioning block 12, and the middle part of the swing arm 2 passes through the fixed shaft 7 It is rotatably fixed on the pipe end processing machine tool.

It can be seen from Fig. 2 that the fixed shaft 7 passes through the through hole 23 in the middle of the swing arm 2, and a copper sleeve 11 is installed in the through hole 23, and an interference fit is adopted between the copper sleeve 11 and the through hole 23, and the copper sleeve 11 and the fixed A clearance fit is used between the shafts 7. One end of the fixed shaft 7 is provided with a shaft shoulder 8, and one end of the copper sleeve 11 abuts on the shaft shoulder 8, and the other end of the fixed shaft 7 is covered with a retaining ring 10, and is locked with a round nut 9, and The gap between the copper sleeve 11, the shaft shoulder 8 and the retaining ring 10 is 0.01-0.03 mm. The end of the swing arm 2 is provided with a shaft end positioning block 12 , and a locking nut 13 is twisted between the swing arm 2 and the shaft end positioning block 12 .

Please refer to Figure 3, the swing arm 2 is in the shape of a "V", one end of the swing arm 2 is provided with a through chute 21, the length of the chute 21 matches the stroke of the piston rod 4, and the other end is provided with a threaded hole 22 , and a through hole 23 is opened in the middle.

The working principle of the utility model is as follows:

Adjust the position of the shaft end positioning block 12 according to the requirements of the forming size of the pipe end, tighten the lock nut 13 after adjustment, start the driving device 1, and make the piston rod 4 drive the shaft end positioning block 12 to move a certain distance through the swing arm 2 , the end of the pipe to be processed is leaned against the shaft end positioning block 12, and then the pipe is clamped. Start the driving device 1 again, and after the shaft end positioning block 12 is moved for a certain distance, the pipe processing equipment can be started to process the end of the pipe. By using the device, the positioning accuracy of the pipe end is improved, and it can meet the pipe forming size requirements of various pipe materials, and is suitable for mass production.

Finally, it should be noted that the above description is only a preferred embodiment of the utility model, and under the inspiration of the utility model, those skilled in the art can make various Similar representations, such transformations all fall within the protection scope of the present utility model.

Claims (4)

1. a tube end maching lathe axial direction positioning device, it is characterized in that: comprise the overall swing arm (2) in " V " font, this swing arm (2) central flex point place is rotating to be connected on lathe, described swing arm (2) one end is connected with the driving arrangement (1) that this swing arm (2) can be driven to rotate around flex point, and the other end is provided with axle head locating piece (12).

2. tube end maching lathe axial direction positioning device according to claim 1, it is characterized in that: described driving arrangement (1) is hydraulic cylinder or cylinder, the piston rod (4) comprising the cylinder barrel (3) fixing with lathe and be arranged in this cylinder barrel (3), described swing arm (2) offers at corresponding piston rod (4) end position the chute (21) that cross section is bar shaped, piston rod (4) end is provided with bearing pin (6), this bearing pin (6) embeds in described chute (21), and can slide along described chute (21) length direction.

3. tube end maching lathe axial direction positioning device according to claim 1, is characterized in that: described axle head locating piece (12) is in the form of annular discs, and its center is welded with screw rod, and threaded engagement is passed through in this screw rod and swing arm (2) end.

4. the tube end maching lathe axial direction positioning device according to claim 1 or 2 or 3, it is characterized in that: the central flex point place of described swing arm (2) offers through hole (23), and be equipped with the fixed axis (7) that swing arm (2) can be supplied to rotate, this fixed axis (7) end and lathe are fixed, copper sheathing (11) is embedded with between fixed axis (7) and through hole (23), this copper sheathing (11) one end is against on the shaft shoulder (8) of fixed axis (7) end, the other end is locked by back-up ring (10) and round nut (9), and described copper sheathing (11) and the gap between the shaft shoulder (8) and back-up ring (10) are 0.01 ~ 0.03mm.