Cylinder forging ring cutting tool and using method

Abstract

The invention provides a cylindrical forge piece girdling tool and a using method, the cylindrical forge piece girdling tool comprises a telescopic device and an electric telescopic rod, the telescopic device comprises a connecting rod A, a connecting rod B, a connecting rod C and a connecting rod D. The connecting rod A and the connecting rod B are hinged together through an upper rivet, and the connecting rod C and the connecting rod D are hinged together through a lower rivet; the fixed end of the electric telescopic rod is connected with the lower rivet, and the telescopic end of the electric telescopic rod is connected with the upper rivet; the lower end of the connecting rod A and the upper end of the connecting rod D are connected together through a first pin shaft in a hinged mode, the lower end of the connecting rod B and the upper end of the connecting rod C are connected together through a second pin shaft in a hinged mode, and the first pin shaft and the second pin shaft are both connected with wedge top devices. The upper end of the connecting rod A, the upper end of the connecting rod B, the lower end of the connecting rod C and the lower end of the connecting rod D are all connected with magnetic control devices. The ring cutting efficiency of the polyethylene cylinder is greatly improved, and the labor amount of workers and the clamping frequency of workpieces are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical processing, in particular to a cylindrical forging ring cutting tool and a use method thereof. Background Art

[0002] The ultra-high pressure polyethylene reactor is one of the key equipment for the kettle method of producing industrial polyethylene, and the polyethylene reactor cylinder is the core part of the reactor. The polyethylene reactor cylinder forgings need to be tempered and heat treated after rough machining. After the heat treatment, the test ring needs to be cut from the cylinder, and then the corresponding performance test is carried out. Due to the protruding structure of the cylinder, it is impossible to use a horizontal lathe to cut the ring; the ring cutting process is usually carried out on a boring machine. In the conventional ring cutting process, it will be processed from the outside to the inside, and the wall thickness of about 2mm will be left uncut. Then the workpiece is removed and the test ring is knocked off with a hammer or other tools. However, this method has a low efficiency in cutting the ring, and requires an additional disassembly and clamping operation, which reduces production efficiency. Summary of the invention

[0003] The technical problem solved by the present invention is to provide a cylindrical forging ring cutting tool and a use method, which greatly improves the ring cutting efficiency of the polyethylene cylinder, reduces the labor workload of workers and reduces the number of workpiece clamping times.

[0004] The technical solution adopted by the present invention to solve its technical problem is:

[0005] A cylindrical forging ring cutting tool, comprising a telescopic device and an electric telescopic rod, wherein the telescopic device comprises a connecting rod A, a connecting rod B, a connecting rod C and a connecting rod D, wherein the connecting rod A and the connecting rod B are connected together by an upper rivet hinge, and the connecting rod C and the connecting rod D are connected together by a lower rivet hinge;

[0006] The fixed end of the electric telescopic rod is connected to the lower rivet, and the telescopic end is connected to the upper rivet;

[0007] The lower end of the connecting rod A and the upper end of the connecting rod D are connected together through a pin shaft 1 hinge, and the lower end of the connecting rod B and the upper end of the connecting rod C are connected together through a pin shaft 2 hinge, and the pin shaft 1 and the pin shaft 2 are both connected with a wedge top device;

[0008] The upper end of the connecting rod A, the upper end of the connecting rod B, the lower end of the connecting rod C and the lower end of the connecting rod D are all connected with a magnetic control device.

[0009] The magnetic control device comprises a rotating arm A and a support ring; a connecting hole A is provided on one side of the rotating arm A, and one end of a slide rod A is provided on the other side; one end of an electromagnet core is connected to the inner side of the support ring, and the other end of the slide rod A is movably arranged in the electromagnet core;

[0010] The connecting rod A, connecting rod B, connecting rod C and connecting rod D are all hingedly connected to the connecting hole through a pin;

[0011] The outer side surface of the slide rod A is sleeved with a neodymium magnet, a magnetic blocking sleeve is arranged between the neodymium magnet and the swing arm A, an electromagnetic coil and a magnetic steel sheet are arranged on the electromagnetic core, the electromagnetic coil is arranged between the magnetic steel sheet and the support ring, and the electromagnetic coil is wound around the outer side surface of the electromagnetic core.

[0012] The wedge top device includes a rotating arm B and a wedge block; a connecting hole B is provided on one side of the wedge block, and one end of a sliding rod B is provided on the other side; a sleeve is connected to the inner side of the wedge block, and the other end of the sliding rod B is movably arranged in the sleeve, and a spring is sleeved on the outer side of the sliding rod B, one end of the spring is connected to the rotating arm B, and the other end is connected to the sleeve; the pin shaft 1 and the pin shaft 2 are both connected in the connecting hole B.

[0013] The upper rivet is installed at the middle position of the connecting rod A and the connecting rod B, and the lower rivet is installed at the middle position of the connecting rod C and the connecting rod D.

[0014] A cylindrical forging ring cutting tool is characterized in that a plurality of lifting holes are arranged on the telescopic device.

[0015] A method for using a cylindrical forging ring cutting tool comprises the following steps:

[0016] S1. Fix the cylinder to be cut into rings on the working table of the boring machine, with the main axis of the boring machine facing the pipe opening of the cylinder of the polyethylene reactor;

[0017] S2, install the boring tool, control the boring machine to extend the boring tool into the position of the cutting ring inside the cylinder, process the groove, and record the spindle movement data X1 at this time;

[0018] S3, the groove in the boring cylinder, the width of the groove is one third of the width of the wedge, and the depth of the groove is half of the thickness of the wedge;

[0019] S4. Install the tooling so that the wedge is pressed into the groove, and start the electric telescopic rod and the support ring so that the tooling is tightly pressed against the inner wall of the pipe;

[0020] S5, move the boring tool to the outer cylindrical surface, control the spindle to move the data to X1, until the workpiece is completely cut off, and retract the boring machine spindle;

[0021] S6. Pass the nylon rope through the lifting hole of the tooling, and use the crane to tighten the nylon rope, then close the magnetic control device at the contact position with the cylinder body, and keep the two magnetic control devices open;

[0022] S7. Control the crane to lift the entire device to the ground, then cut off the power and remove the tooling.

[0023] The beneficial effects of the present invention are:

[0024] 1. The magnetic control device is engaged in the groove of the cylinder, and the wedge top device is pressed against the inner wall of the workpiece. Then the external boring tool is used to cut the ring on the outer surface of the workpiece. The workpiece can be cut directly, and then the boring machine tool bar is withdrawn and the test ring is lifted and transported out by a crane. Compared with the traditional ring cutting method, the number of disassembly and assembly of the workpiece during processing is reduced, and it is also safer and more efficient. By greatly improving the ring cutting efficiency of the polyethylene cylinder, the labor of workers is reduced and the number of clamping times of the workpiece is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the structure of the tooling installed in the cylinder of the ultra-high pressure polyethylene reactor;

[0026] Figure 2 for Figure 1 The enlarged structure diagram at A in the middle;

[0027] Figure 3 It is a three-dimensional structural diagram of the tooling;

[0028] Figure 4 is a schematic diagram of the structure of the telescopic device;

[0029] Figure 5 It is a three-dimensional structural diagram of the magnetron device;

[0030] Figure 6 is a cross-sectional schematic diagram of a magnetron device;

[0031] Figure 7 It is a three-dimensional structural diagram of the wedge top device;

[0032] Figure 8 It is a cross-sectional schematic diagram of the wedge top device.

[0033] As shown in the figure: 1- telescopic device; 2- magnetic control device; 3- wedge top device; 4- electric telescopic rod; 5- upper rivet; 6- lower rivet; 7- pin shaft 1; 8- pin shaft 2; 9- cylinder body; 10- lifting hole; 11- connecting rod A; 12- connecting rod B; 13- connecting rod C; 14- connecting rod D; 21- swing arm A; 22- neodymium magnet; 23- support ring; 24- electromagnetic coil; 25- magnetic resistance sleeve; 26- magnetic conductive steel sheet; 27- connecting hole A; 28- sliding rod A; 29- electromagnetic core; 31- swing arm B; 32- wedge block; 33- spring; 34- connecting hole B; 35- sliding rod B; 36- sleeve; 37- hexagon socket screw; 38- internal threaded hole; 39- through hole. DETAILED DESCRIPTION

[0034] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0035] Example

[0036] like Figures 1 to 8As shown, a cylindrical forging ring cutting tool comprises a telescopic device 1 and an electric telescopic rod 4, wherein the telescopic device 1 comprises a connecting rod A11, a connecting rod B12, a connecting rod C13 and a connecting rod D14, wherein the connecting rod A11 and the connecting rod B12 are hinged together by an upper rivet 5, and the connecting rod C13 and the connecting rod D14 are hinged together by a lower rivet 6;

[0037] The fixed end of the electric telescopic rod 4 is connected to the lower rivet 6, and the telescopic end is connected to the upper rivet 5;

[0038] The lower end of the connecting rod A11 and the upper end of the connecting rod D14 are hinged together through a pin shaft 1 7, and the lower end of the connecting rod B12 and the upper end of the connecting rod C13 are hinged together through a pin shaft 2 8, and the pin shaft 1 7 and the pin shaft 2 8 are both connected with a wedge top device 3;

[0039] The upper end of the connecting rod A11, the upper end of the connecting rod B12, the lower end of the connecting rod C13 and the lower end of the connecting rod D14 are all connected with a magnetic control device 2.

[0040] The magnetic control device 2 includes a rotating arm A21 and a support ring 23; a connecting hole A27 is provided on one side of the rotating arm A21, and one end of a sliding rod A28 is provided on the other side; one end of an electromagnetic core 29 is connected to the inner side of the support ring 23, and the other end of the sliding rod A28 is movably arranged in the electromagnetic core 29;

[0041] The connecting rod A11, connecting rod B12, connecting rod C13 and connecting rod D14 are all hingedly connected to the connecting hole 27 through a pin;

[0042] The outer side surface of the slide rod A28 is sleeved with a neodymium magnet 22, and a magnetic blocking sleeve 25 is arranged between the neodymium magnet 22 and the rotating arm A21. The electromagnetic core 29 is provided with an electromagnetic coil 24 and a magnetic steel sheet 26. The electromagnetic coil 24 is arranged between the magnetic steel sheet 26 and the support ring 23, and the electromagnetic coil 24 is wound around the outer side surface of the electromagnetic core 29.

[0043] The wedge top device 3 includes a rotating arm B31 and a wedge block 32; a connecting hole B34 is provided on one side of the wedge block 32, and one end of a sliding rod B35 is provided on the other side; a sleeve 36 is connected to the inner side of the wedge block 32, and the other end of the sliding rod B35 is movably arranged in the sleeve 36, and a spring 33 is sleeved on the outer side of the sliding rod B35, one end of the spring 33 is connected to the rotating arm B31, and the other end is connected to the sleeve; the pin shaft 1 7 and the pin shaft 2 8 are both connected in the connecting hole B34.

[0044] The upper rivet 5 is installed at the middle position between the connecting rod A11 and the connecting rod B12, and the lower rivet 6 is installed at the middle position between the connecting rod C13 and the connecting rod D14.

[0045] A plurality of lifting holes 10 are arranged on the telescopic device 1 .

[0046] A method for using a cylindrical forging ring cutting tool comprises the following steps:

[0047] S1, clamp and fix the polyethylene reactor cylinder 9 to be cut into rings on the working table of the boring machine, and the main axis of the boring machine is facing the pipe mouth of the polyethylene reactor cylinder 9;

[0048] S2, install the boring tool, control the boring machine to extend the boring tool into the position of the cutting ring inside the cylinder 9, process the groove, and record the spindle movement data X1 at this time;

[0049] S3, a groove in the boring cylinder, the width of the groove is one third of the width of the wedge 32, and the depth of the groove is half the thickness of the wedge 32;

[0050] S4, install the tooling so that the wedge block 32 is pressed into the groove, start the electric telescopic rod 4 and the support ring 23, and press the tooling tightly against the inner wall of the pipe;

[0051] S5, move the boring tool to the outer cylindrical surface, control the spindle to move the data to X1, until the workpiece is completely cut off, and retract the boring machine spindle;

[0052] S6, pass the nylon rope through the lifting hole 10 of the tooling, and use the crane to tighten the nylon rope, then close the magnetic control device 2 at the contact position with the cylinder body 9, and keep the two magnetic control devices 2 open;

[0053] S7. Control the crane to lift the entire device to the ground, then cut off the power and remove the tooling.

[0054] The electromagnetic core 29 and the support ring 23 are made of the same material, and both are electromagnetic cores.

[0055] The magnetic control device 2 is engaged in the groove of the cylinder 1, and the wedge-top device 3 is pressed against the inner wall of the workpiece. Then, the external boring tool is used to cut a ring on the outer surface of the workpiece, so the workpiece can be directly cut off. Then, the boring machine tool rod is withdrawn and the test ring is lifted and transported out using a crane. Compared with the traditional ring cutting method, the number of times the workpiece is disassembled and assembled during processing is reduced, and it is also safer and more efficient. By greatly improving the ring cutting efficiency of the polyethylene cylinder, the labor workload of workers and the number of times the workpiece is assembled can be reduced.

[0056] Working principle: the workpiece is clamped and fixed on the boring machine, and then a groove is machined on the inner cylindrical surface of the cylinder 9 with an internal boring tool, and then the wedge block 32 of the tool is clamped into the groove. After the power is started, the electric telescopic rod 4 contracts, and the connecting rod B12 and the connecting rod C13 as well as the connecting rod A11 and the connecting rod D14 drive the wedge block 31 to move outward, and the wedge block 32 will be tightly stuck in the groove, and then the electromagnetic coil 24 is energized to make the support ring 23 generate magnetic force. The support ring 23 and the neodymium magnet 22 are the same polar magnetic force, and the same poles repel each other, and then the support ring 23 and the neodymium magnet 22 repel each other, and the neodymium magnet 22 pushes the support ring 23 to move outward to press the inner wall of the workpiece. At the same time, the magnetic force of the outer side of the support ring 23 is attracted to the workpiece, so that the outer side of the support ring 23 is in closer contact with the workpiece; then the external boring tool is used to cut the ring on the outer surface of the workpiece, and the workpiece can be directly cut off, and then the boring machine tool bar is withdrawn and the test ring is lifted and transported out using a crane.

[0057] When the tooling needs to be removed, the electric telescopic rod 4 is controlled to extend, and the connecting rods B12 and C13 as well as the connecting rods A11 and D14 drive the wedge block 31 to move inward, and the wedge block 32 will be separated from the groove. The electromagnetic coil 24 is powered off, and the magnetic force of the support ring 23 disappears. The neodymium magnet 22 has an attractive force on the magnetic steel sheet 26, and the magnetic steel sheet 26 drives the support ring 23 to move toward the neodymium magnet 22, and the support ring 23 is separated from the inner wall of the workpiece, thereby removing the tooling.

[0058] The electromagnet core 29 is a cylindrical structure.

[0059] The spring 33 can prevent the wedge block 32 from falling, and the neodymium magnet 22 generates a suction force on the magnetic steel sheet 26 to prevent the support ring 23 from falling.

[0060] The wedge block 32 is provided with a through hole 39 , and the swing arm B31 is provided with an internal threaded hole 38 . One end of a hexagon socket screw 37 is movably disposed in the through hole 39 , and the other end of the hexagon socket screw 37 is connected to the internal threaded hole 38 .

[0061] The through hole 39 is a stepped hole structure, including a left through hole and a right through hole. The diameter of the left through hole is larger than the diameter of the right through hole. The hexagon socket screw 37 includes a nut, a rod and a threaded rod connected in sequence. The nut is movably arranged in the left through hole. The rod passes through the right through hole, and the length of the rod is larger than the right through hole. The threaded rod corresponds to the internal threaded hole 38.

[0062] The hexagon socket screw 37 passes through the through hole 39 of the wedge block 32 and is fixed to the internal thread hole 38 of the rotating arm B31 to prevent the wedge block 32 from falling.

[0063] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A cylindrical forging ring cutting tool, comprising a telescopic device (1) and an electric telescopic rod (4), characterized in that: The telescopic device (1) comprises a connecting rod A (11), a connecting rod B (12), a connecting rod C (13) and a connecting rod D (14), wherein the connecting rod A (11) and the connecting rod B (12) are hingedly connected together via an upper rivet (5), and the connecting rod C (13) and the connecting rod D (14) are hingedly connected together via a lower rivet (6); The fixed end of the electric telescopic rod (4) is connected to the lower rivet (6), and the telescopic end is connected to the upper rivet (5); The lower end of the connecting rod A (11) and the upper end of the connecting rod D (14) are hinged together via a pin shaft 1 (7), and the lower end of the connecting rod B (12) and the upper end of the connecting rod C (13) are hinged together via a pin shaft 2 (8), and the pin shaft 1 (7) and the pin shaft 2 (8) are both connected to a wedge top device (3); The upper end of the connecting rod A (11), the upper end of the connecting rod B (12), the lower end of the connecting rod C (13) and the lower end of the connecting rod D (14) are all connected to a magnetic control device (2).

2. A cylindrical forging ring cutting tool as claimed in claim 1, characterized in that: The magnetic control device (2) comprises a rotating arm A (21) and a support ring (23); a connecting hole A (27) is provided on one side of the rotating arm A (21), and one end of a sliding rod A (28) is provided on the other side; one end of an electromagnetic core (29) is connected to the inner side of the support ring (23), and the other end of the sliding rod A (28) is movably arranged in the electromagnetic core (29); The connecting rod A (11), the connecting rod B (12), the connecting rod C (13) and the connecting rod D (14) are all hingedly connected to the connecting hole (27) via a pin; The outer side surface of the slide bar A (28) is sleeved with a neodymium magnet (22), a magnetic blocking sleeve (25) is arranged between the neodymium magnet (22) and the rotating arm A (21), an electromagnetic coil (24) and a magnetic steel sheet (26) are arranged on the electromagnetic core (29), the electromagnetic coil (24) is arranged between the magnetic steel sheet (26) and the support ring (23), and the electromagnetic coil (24) is wound around the outer side surface of the electromagnetic core (29).

3. A cylindrical forging ring cutting tool as claimed in claim 1, characterized in that: The wedge top device (3) comprises a rotating arm B (31) and a wedge block (32); a connecting hole B (34) is provided on one side of the wedge block (32), and one end of a sliding rod B (35) is provided on the other side; a sleeve (36) is connected to the inner side of the wedge block (32), and the other end of the sliding rod B (35) is movably arranged in the sleeve (36); a spring (33) is sleeved on the outer side of the sliding rod B (35), one end of the spring (33) is connected to the rotating arm B (31), and the other end is connected to the sleeve; the pin shaft 1 (7) and the pin shaft 2 (8) are both connected in the connecting hole B (34).

4. A cylindrical forging ring cutting tool as claimed in claim 1, characterized in that: The upper rivet (5) is installed at a middle position between the connecting rod A (11) and the connecting rod B (12), and the lower rivet (6) is installed at a middle position between the connecting rod C (13) and the connecting rod D (14).

5. A cylindrical forging ring cutting tool as claimed in claim 1, characterized in that: A plurality of lifting holes (10) are arranged on the telescopic device (1).

6. A method for using a cylindrical forging ring cutting tool as claimed in any one of claims 1 to 5, characterized in that: The following steps are involved: S1, clamping and fixing the cylinder (9) to be cut into rings on the working table of the boring machine, with the main axis of the boring machine facing the pipe opening of the cylinder (9) of the polyethylene reactor; S2, installing a boring tool, controlling the boring machine to extend the boring tool into the position of the cutting ring inside the cylinder (9), machining a groove, and recording the spindle movement data X1 at this time; S3, a groove in the boring cylinder, the width of the groove is one third of the width of the wedge (32), and the depth of the groove is half the thickness of the wedge (32); S4, installing the tooling so that the wedge block (32) is pressed into the groove, and the electric telescopic rod (4) and the support ring (23) are started so that the tooling is tightly pressed against the inner wall of the pipeline; S5, move the boring tool to the outer cylindrical surface, control the spindle to move the data to X1, until the workpiece is completely cut off, and retract the boring machine spindle; S6. Pass the nylon rope through the lifting hole (10) of the tooling, and use a crane to tighten the nylon rope, then close the magnetic control device (2) at the position in contact with the main body of the cylinder (9), while keeping the two magnetic control devices (2) turned on; S7. Control the crane to lift the entire device to the ground, then cut off the power and remove the tooling.

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