CN106180317B8 - A kind of positioning device for CNC tube bending machine - Google Patents

Abstract

The invention discloses a kind of positioning devices for CNC tube bending machine, the CNC tube bending machine includes lathe mandrel, the positioning device includes a left side, right ring flange and setting are on a left side, spring between right ring flange, the left side, any one ring flange can overcome the elastic force of spring to be axially moveable relative to another ring flange in right ring flange, another described ring flange is fixedly connected with the lathe end face of mandrel of CNC tube bending machine, the left side, the spacing that right ring flange moves axially relatively controls within 3mm~5mm, the whole axial length of the positioning device is consistent with the lathe mandrel length of part is taken down on CNC tube bending machine.The present invention is by replacing the detent mechanism on former CNC tube bending machine, rebound for pipe fitting during CNC tube bending machine upper tube provides elastic buffer space, to efficiently solve the problems, such as the rebound of pipe fitting during upper tube, greatly improve the stability of original equipment spindle positioning device, the precision for greatly improving pipe fitting processing dimension, greatly reduces rejection rate.

Description

A positioning device for CNC pipe bending machine

technical field

[0001] The invention belongs to the field of pipe fittings processing, in particular to a positioning device mainly used for numerically controlled pipe benders.

Background technique

Although numerically controlled pipe bending machine is the high-precision equipment of pipe fitting processing, still do not fully consider the elastic strength problem of metal pipe in the design and manufacture process of equipment, as shown in Figure 1, when operator is carrying out upper pipe operation At the same time, since the end face of the processed pipe fitting is in rigid contact with the positioning end face of the machine tool, it is very easy to have a springback phenomenon of the pipe fitting, which will cause errors in the straight line and space dimensions of the processed pipe fittings, resulting in waste products.

Contents of the invention

Summary of the invention The object of the present invention is: for the problem of above-mentioned existence, provide a kind of can realize fast clamping and accurate positioning of pipe fittings, and effectively improve the processing quality of pipe fittings, thereby reduce the positioning device for numerically controlled pipe bending machine of processing scrap rate . The technical solution of the technology of the present invention is achieved like this: a kind of positioning device for numerically controlled pipe bender, described numerically controlled pipe bender comprises machine tool mandrel, it is characterized in that: described positioning device comprises left and right method The blue plate and the spring arranged between the left and right flanges, any one of the left and right flanges can move axially relative to the other flange against the elastic force of the spring, and the other A flange is fixedly connected to the end face of the machine tool mandrel of the CNC pipe bending machine, the distance between the left and right flanges moving relative to each other in the axial direction is controlled within 3 mm to 5 mm, and the overall axial length of the positioning device is the same as The length of the mandrel of the machine tool removed from the CNC pipe bending machine is the same.

The positioning device for numerically controlled pipe bender of the present invention, it is provided with mandrel along its axial center on described left flange plate or right flange plate, the axial end face of described mandrel and its The distance between the end faces of the corresponding flanges is 3 mm to 5 mm.

Positioning device for numerically controlled pipe bender of the present invention, it is respectively provided with annular groove on the inboard end face of described left and right flange, and the two ends of described spring are respectively arranged on corresponding method In the ring groove of the blue plate.

The positioning device for numerically controlled pipe bender of the present invention, it is provided with central groove along its axial center at the end face of described mandrel, is provided with on the flange plate corresponding to described mandrel The central through hole corresponds to the central slot, the central slot is connected to one end of the bolt, the other end of the bolt passes through the central through hole, and the flange with the central through hole can move freely in the axial direction relative to the bolt.

The positioning device for numerically controlled pipe bender of the present invention, its described central through hole is formed as chamfering structure near the outer section of corresponding flange.

[0009] The present invention provides an elastic buffer space for the springback of pipe fittings in the upper pipe process of numerical control pipe bender by replacing the positioning mechanism on the original numerical control pipe bender, thereby effectively solving the springback problem of pipe fittings in the upper pipe process and greatly improving The stability of the mandrel positioning device of the original equipment is improved, the precision of the processing size of the pipe fittings is greatly improved, and the scrap rate is greatly reduced.

Description of drawings

[0010] Fig. 1 is a schematic structural view of an existing positioning device on a pipe bender.

Fig. 2 is a structural representation of the present invention.

Fig. 3 and Fig. 4 are the structural representations of left and right flanges in the present invention.

[0013] Fig. 5 is a schematic structural view of the present invention assembled on a pipe bender.

Reference numeral among the figure: 1 is left flange, and 2 is right flange, and 3 is spring, and 4 is mandrel, and 5 is annular groove, and 6 is center groove, and 7 is center through hole, and 8 Be a bolt, 9 is a machine tool mandrel, and 10 is a positioning mechanism.

detailed description

Embodiment Below in conjunction with accompanying drawing, the present invention is described in detail.

[0016] In order to make the purpose of the present invention, technical solutions and advantages clearer, the present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

As shown in Figure 2-4, a kind of positioning device for numerically controlled pipe bender, described numerically controlled pipe bender comprises machine tool mandrel 9, and described positioning device comprises left flange plate 1, right flange The plate 2 and the spring 3 arranged between the left and right flanges are respectively provided with annular grooves 5 on the inner end surfaces of the left and right flanges, and the two ends of the spring 3 are respectively arranged on the corresponding In the annular groove 5 of the blue plate, a mandrel 4 is arranged along the axial center of the left flange 1 or the right flange 2, and the axial end face of the mandrel 4 and the corresponding flange end face The distance between them is 3mm ~ 5mm, any flange in the left and right flanges can overcome the elastic force of the spring 3 and move axially relative to the other flange, and the other flange and the numerical control The end faces of the machine tool mandrel 9 of the pipe bender are fixedly connected, and the distance between the left and right flanges relative to each other in the axial direction is controlled within 3 mm to 5 mm. The length of the mandrel 9 of the machine tool of the dropped part is consistent, so as to ensure the basic design of the clamping and positioning of the pipe fittings.

Wherein, the end face of described mandrel 4 is provided with central groove 6 along its axial center, is provided with the central through hole 7 corresponding with central groove 6 on the flange plate corresponding to described mandrel 4, so The central through hole 7 is formed into a chamfered structure near the outer section of the corresponding flange, the central groove 6 is connected to one end of the bolt 8, and the other end of the bolt 8 is passed through the central through hole 7, with the central through hole 7 The flange plate can move freely in the axial direction relative to the bolt 8.

The present invention is used in numerically controlled pipe bender and pipe fitting is positioned, and it is that the positioning mechanism 10 that is fixed on the machine tool mandrel 9 by three bolts on the former pipe bender and machine tool mandrel 9 cuts, and pulls down The original positioning mechanism 10 assembles the two processed flanges as shown in Figure 5, that is, the end face of the left flange 1 and the end face of the original machine tool spindle 9 are spot welded together, and the two must be ensured during the operation. Concentric, then install the spring 3-end into the annular groove 5 of the left flange, then install the right flange 2, and install the other end of the spring 3 into the annular groove 5 of the right flange 2 , use M6*l5mm countersunk head bolts 8 to pass through the center through hole 7 of the right flange 2, and connect with the center groove 6 of the mandrel 4 on the left flange 1, and ensure that the left flange is installed during installation. There is a gap of 3mm～5mm between the mandrel 4 end faces of 1 and the inboard end face of right flange 2.

Carry out overall debugging to this device at last, promptly adjust bolt to ensure that left flange plate 1 and right flange plate 2 overall length dimensions get final product greater than 30mm, guarantee that the integral length dimension of left flange plate and right flange plate is In order to make the axial length of the assembled positioning device consistent with the length of the mandrel of the machine tool cut off, to ensure the basic design of the clamping and positioning of the pipe fittings, in this embodiment, the length of the mandrel on the left flange is 30 mm, and the spring The amount of compression is greater than 30mm to ensure the above design requirements.

The above is only a preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles of the present invention, equivalent replacement and improvement etc., all should be included in this within the scope of protection of the invention.

Claims (5)

1. a positioning device for numerically controlled pipe bender, said numerically controlled pipe bender comprises machine tool mandrel (9), it is characterized in that: described positioning device comprises left and right flange (1,2) and setting The spring (3) between the left and right flanges (1,2), any one of the flanges in the left and right flanges (1,2) can overcome the elastic force of the spring (3) relative to the other One flange moves axially, the other flange is fixedly connected to the end face of the machine tool mandrel (9) of the CNC pipe bender, and the left and right flanges (1, 2) relatively move axially The pitch of the positioning device is controlled within 3ram ~ 5nm, and the overall axial length of the positioning device is consistent with the length of the machine tool mandrel (9) that has been removed from the CNC pipe bender. 2. The positioning device for numerically controlled pipe bender according to claim 1, characterized in that: on the left flange (1) or right flange (2), a core is arranged along its axial center shaft (4), the distance between the shaft end face of the mandrel (4) and its corresponding flange end face is 3mm to 5mm. 3. The positioning device for a numerically controlled pipe bender according to claim 2, characterized in that: an annular groove (5) is respectively arranged on the inner side faces of said left and right flanges (1, 2), The two ends of the spring (3) are respectively arranged in the annular grooves (5) of the corresponding flanges. 4. The positioning device for numerical control pipe bender according to claim 2 or 3, characterized in that: the end face of the mandrel (4) is provided with a central groove (6) along its axial center, in which The flange plate corresponding to the mandrel (4) is provided with a center through hole (7) corresponding to the center groove (6), and the center groove (6) is connected to one end of the bolt (8), and the bolt (8) ) through the center through hole (7), the flange with the center through hole (7) can move freely in the axial direction relative to the bolt (8). 5. The positioning device for a numerically controlled pipe bender according to claim 4, wherein the center through hole (7) is formed into a chamfer structure near the outer section of the corresponding flange.