CN106002067A - Auxiliary supporting fixture for circular tube cutting - Google Patents

Abstract

The invention discloses an auxiliary support fixture for cutting round pipes, which is mainly suitable for cutting round pipes within a certain diameter range by a laser cutting machine tool for cutting round pipes. Its main features are: the supporting fixture uses a trapezoidal supporting plate equipped with balls and bull's-eye wheels to support the round pipe; the lower end of the supporting fixture is equipped with four trapezoidal grooved wheels with brake rubber to fit on the hexagonal steel guide rail Roll to realize the horizontal movement of the fixture; the support fixture adopts bevel gears, thrust ball bearings, ball nuts, threaded shafts and lifting rods to form a lifting device to realize the vertical movement of the support plate.

Description

A round pipe cutting auxiliary support fixture

technical field

The invention relates to an auxiliary support fixture for cutting round pipes, which is mainly suitable for cutting round pipes within a certain diameter range by a laser cutting machine tool for cutting round pipes.

Background technique

Round tube laser cutting machine is a laser cutting machine that can cut round tubes. Its function is mainly to cut round tubes. Most of the bed is long and narrow, with high processing efficiency and moderate price.

At present, most of the round tube laser cutting machines on the market use long and narrow bed to place the round tube, use the servo motor to directly drive the chuck and other fixtures to drive the round tube workpiece to rotate; most of them use a separate moving device to drive the workpiece along the The guide rail moves horizontally; the design of the fixture supporting the workpiece is complex and expensive; because the support points are generally set to two, one is floating and the other is fixed, when the two support points are far apart, the thin-walled circular pipe is prone to excessive deformation Quantity; when cutting short tubes, the precision is high, but the processing precision of tube workpieces is mostly not required to be very precise, and the high price does not meet the needs of some customers.

Contents of the invention

In order to overcome the shortcomings of the above-mentioned prior art, the present invention provides an auxiliary supporting fixture for cutting round pipes. It solves the problem that the support fixture structure of the circular tube laser cutting machine is too complex, expensive, not strong in practical function, and excessively wasteful.

The technical solution adopted in the present invention is: an auxiliary support fixture for cutting round pipes, the support fixture uses a trapezoidal support plate equipped with balls and bull's eyes to support the round pipe; four trapezoidal support plates with brake rubber are installed on the lower end of the support fixture. The grooved wheels are used to cooperate with rolling on the hexagonal steel guide rail to realize the horizontal movement of the fixture; the support fixture uses two conical gears, thrust ball bearings, ball nuts, threaded shafts and lifting rods to form a lifting device to realize the vertical movement of the support plate. Move straight.

Compared with the prior art, the beneficial effect of the present invention is that the structure design of the fixture is reasonable and simple, for example, hexagonal steel is used to replace the traditional round steel guide rail, the processing difficulty is low, the cost is easy to control, and the processing accuracy meets the production requirements.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of the auxiliary support fixture for cutting round pipes designed in this design.

Figure 2 is a three-dimensional model diagram of the designed round pipe cutting auxiliary support fixture.

Fig. 3 is a schematic diagram of an embodiment of the designed circular pipe cutting auxiliary support fixture.

In the figure: 1 gear guard plate, 2 lower base plate, 3 upper base plate, 4 reinforcement rib, 5 sleeve, 6 lifting frame, 7 support plate, 8 bull’s eye wheel, 9 ball, 10 oil cup, 11 set screw , 12 ball nuts, 13 threaded shafts, 14 thrust ball bearings, 15 end caps, 16 circlips for shafts, 17 joysticks, 18 driven gears, 19 driving gears, 20 wheels, 21 hexagonal steel rails, 22 round tube workpieces , 23 claws, 24 motors.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings, wherein the schematic embodiments and descriptions are only used to explain the present invention, but not as a limitation to the present invention.

As shown in FIG. 1 , a round pipe cutting auxiliary support fixture, 18 driven gears in its structure and the 13 threaded shafts are assembled together through positioning pins.

Select described 20 wheels for use, be to adopt the wheel of band braking rubber, roll on 21 hexagonal steel guide rails; 20 wheels are connected with 2 lower base plates; 2 lower base plates are connected with 3 upper base plates; The reinforcing rib is connected with the 5 sleeves; thereby driving the whole fixture to move.

The 6 lifting frames are connected with 12 ball nuts, and the 13 threaded shafts cooperate with the 12 ball nuts to form a screw nut pair. The shaft rotates to push the 12 ball nuts to rise or fall; the 6 lifting frames are driven by the 12 ball nuts to move in the vertical direction.

The 7 supporting plates are connected with the 6 lifting frame and moved up and down by the 6 lifting frame driver; there are processed grooves on the inner side of the 7 supporting plate for placing 9 balls, and the bottom surface is equipped with 8 bull's-eye wheels and 9 balls. And the 8 bull's-eye wheels are in contact with the 22 round tube workpieces and move relatively.

The 10 oil cups can be used to inject lubricating oil while preventing external impurities from entering, so as to protect the internal structure from being damaged by excessive friction.

The 11 setscrews are used to cooperate with the long keyway on the 6 lifting frame to guide, so that the 6 lifting frame moves along the contour of the keyway; if the vibration of the machine tool is too large, after the 6 lifting frame moves to a certain position, it can also Screw 11 setscrews to make them contact the bottom of the keyway, cooperate with the trapezoidal thread on the 13 threaded shaft, and play an auxiliary positioning role.

The circlip for the 16-axis is used to prevent the 13 threaded shaft from leaving the normal working position during transportation and other processes; under normal working conditions, due to gravity, the circlip for the 16-axis is not in contact with the 15 end cover, and will not Interfere with the rotation of the 13 threaded shaft.

As shown in Figure 3, in this embodiment, the 23 chucks are driven by the 24 motors to rotate, and the 22 round tube workpieces are clamped by the 23 chucks to rotate, and the 22 round tube workpieces are supported by the round tube auxiliary support fixture, and then cut by an external laser , to realize the normal operation of the laser cutting machine; this embodiment uses two circular tubes to assist the support fixture, but the number is not limited.

The above descriptions are only examples of the present invention, and are not intended to limit the scope of the patents of the present invention. Any equivalent structure or equivalent transformation made by the abstract, specification and accompanying drawings of the present invention, or directly or indirectly used in other relevant All technical fields are equally included in the protection scope of the patent of the present invention.

Claims (2)

1. a pipe cutting auxiliary support fixture, it is characterised in that: this support fixture uses the trapezoidal gripper shoe taken turns equipped with ball and buphthalmos to support pipe；This support fixture lower end is provided with four dovetail groove wheels with braking rubber, realizes moving horizontally of fixture in order to coordinate to roll on hexagonal steel guide rail；This support fixture uses two conical gears, thrust ball bearing, ball nut, and the composition lowering or hoisting gear such as thread spindle and elevating lever moves with the vertical direction realizing gripper shoe.

A kind of pipe cutting auxiliary support fixture the most according to claim 1, it is characterised in that: using the gripper shoe of trapezoid cross section, gripper shoe medial surface has ball grooves for placing ball, inner bottom surface is provided with multiple buphthalmos wheel；By slewing maneuver handle drives conical gear, so that the method that thread spindle rotates, it is achieved the lifting of gripper shoe.