CN113478035A

CN113478035A - Vertical rotary linear cutting machine

Info

Publication number: CN113478035A
Application number: CN202110923143.XA
Authority: CN
Inventors: 王东生; 屈光; 汪群友; 华盟章
Original assignee: Tongling Yuanyi Fine Machinery Co ltd; Tongling University
Current assignee: Tongling Yuanyi Fine Machinery Co ltd; Tongling University
Priority date: 2021-08-12
Filing date: 2021-08-12
Publication date: 2021-10-08

Abstract

The invention provides a vertical rotary linear cutting machine, which comprises a base; a connecting mechanism; a support mechanism; the lifting mechanism comprises a bearing seat, a screw rod and a first variable frequency motor, the first variable frequency motor is mounted at the top end of the connecting mechanism, one end of the first variable frequency motor is connected with the screw rod, the screw rod is rotatably connected with the inside of the bearing seat, and the bearing seat is fixed at the bottom end of the connecting mechanism; the driving mechanism is fixed on the side wall of the supporting mechanism; the fixing mechanism comprises joints, a clamping groove, a roller and a rotating rod, the two joints are respectively and rotatably connected with the side wall of the supporting mechanism, and one end of each joint is connected with the driving mechanism; the other end of the joint is arranged in the clamping groove, and the inside of the clamping groove is rotatably connected with the roller; an adjustment mechanism; and (4) electrode wires. The invention has the advantages of convenient replacement of the electrode wire and convenient up-and-down movement of the electrode wire.

Description

Vertical rotary linear cutting machine

Technical Field

The invention relates to the technical field of cutting machine tools, in particular to a vertical rotary linear cutting machine tool.

Background

Wire electric discharge machines are generally classified into two categories according to the wire electrode operating speed: one is a high-speed wire-moving electric spark wire cutting machine tool, the electrode wire of the machine tool performs high-speed reciprocating movement, generally, the wire moving speed is 8-10 m/s, the machining precision is +/-0.01 mm, the surface roughness of a workpiece is Ral.25-2.5 mu m, and the requirements of common die machining and manufacturing of some complex parts can be met. The cutting machine is a main machine for production and use in China and is also an original linear cutting machining mode in China. The other type is a low-speed wire-moving electric spark wire cutting machine tool, the electrode wire of the machine tool moves in a single direction at a low speed, the wire-moving speed is generally lower than 0.2m/s, and the machine tool is a main machine type produced and used abroad. Because the machine tool adopts a closed-loop digital alternating current (direct current) servo control system and an excellent whole manufacturing technology, excellent dynamic performance and high positioning precision are ensured, the processing precision can reach +/-2-5 mu m, and the surface roughness can reach Ra0.1-0.2 mu m.

Although the low-speed wire-moving electric spark wire-cutting machine tool has an automatic wire-moving function, the structure is complex, the technical content is high, the price is high, the high-speed wire-moving electric spark wire-cutting machine tool with relatively low price adopts manual wire-moving, and because the length of the wire electrode reaches dozens of meters and hundreds of meters, a large amount of time is spent on winding the wire on a wire storage cylinder and adjusting the tension of the wire electrode, the use is inconvenient, in addition, for the electric spark wire-cutting, the workpiece is fixed in the vertical direction, and the relative movement of the wire electrode and the workpiece in the vertical direction is realized, and the existing equipment adopts the wire-moving mode. For rotary electrospark wire-electrode cutting, the electrode wire simultaneously finishes two motions of rotation and linear wire moving, only various mechanisms related to the wire moving action of the electrode wire are arranged on a rotating platform, and only in this way, the electrode wire is ensured not to generate adverse phenomena of torsion, winding, clamping stagnation and the like in the rotating wire moving process, so that the rotating head has a complex structure, large size and high cost.

Therefore, there is a need to provide a new vertical rotary wire cutting machine to solve the above problems.

Disclosure of Invention

The invention solves the technical problem of providing a vertical rotary linear cutting machine tool which is convenient for replacing a wire electrode and the wire electrode to move up and down.

In order to solve the above technical problems, the present invention provides a vertical rotary wire-cut electrical discharge machining apparatus comprising: a base; the connecting mechanism is arranged at the edge of the top surface of the base; the supporting mechanism is fixed on the side wall of the connecting mechanism; the lifting mechanism comprises a bearing seat, a screw rod and a first variable frequency motor, the first variable frequency motor is installed at the top end of the connecting mechanism, one end of the first variable frequency motor is connected with the screw rod, the screw rod is rotatably connected with the inside of the bearing seat, the bearing seat is fixed at the bottom end of the connecting mechanism, and the screw rod is in threaded connection with the side wall of the supporting mechanism; the driving mechanism is fixed on the side wall of the supporting mechanism; the fixing mechanism comprises joints, clamping grooves, a roller and a rotating rod, the two joints are respectively and rotatably connected with the side wall of the supporting mechanism, and one end of each joint is connected with the driving mechanism; the other end of the joint is arranged in the clamping groove, the inside of the clamping groove is rotatably connected with the roller, and one end of the roller is fixedly connected with the rotating rod; the adjusting mechanism is arranged on the side wall of the joint; the electrode wire is wound on the side wall of the roller.

Preferably, the supporting mechanism comprises a support and a support, the two ends of the support are respectively connected with the joints in a rotating mode, the support is symmetrically installed on the side wall of the support, and the support is internally connected with the screw rods in a threaded mode.

Preferably, coupling mechanism includes spout, stand and slider, the installation of the top surface edge of base the stand, the lateral wall symmetry of stand is located the spout, the inside sliding connection of spout the slider, just the lateral wall symmetry fixed connection of support the slider.

Preferably, the driving mechanism comprises a fixed plate, a belt, a second variable frequency motor, a fixed shaft, a roller and a fixed wheel, the fixed plate is symmetrically installed on the side wall of the bracket, and the second variable frequency motor is installed on the top surface of the fixed plate; the fixed shaft is arranged at one end of the second variable frequency motor and fixedly connected with the fixed wheel, and the fixed wheel is rotatably connected with the inside of the fixed plate; the belt is sleeved on the side walls of the fixed wheel and the rolling shaft, and the rolling shaft is fixedly connected with the joint.

Preferably, the adjusting mechanism comprises a fixing block, a groove, a limiting rod, a mounting plate and a lug, the side wall of the joint is provided with the mounting plate in a round table shape, the groove is arranged inside the joint, the inside of the groove is rotatably connected with the fixing block and the lug, the fixing block is fixedly connected with the roller, and the lugs are arranged on the side wall of the fixing block at equal intervals; the lateral wall of mounting panel with threaded connection between the gag lever post, the gag lever post is contradicted the lug with the fixed block.

Preferably, the rotating rod and the limiting rod are respectively located at two ends of the joint, and the center of the rotating rod is aligned with the center of the mounting plate.

Preferably, an electric hydraulic rod is installed at the top end of the upright post, and one end of the electric hydraulic rod is fixedly connected with the support.

Compared with the related art, the vertical rotary linear cutting machine tool provided by the invention has the following beneficial effects:

according to the vertical rotary linear cutting machine tool, the relative movement of the wire electrode and the workpiece in the vertical direction is realized through the up-and-down reciprocating movement of the whole support, the traditional wire moving motion is replaced, a wire moving mechanism in a fixing mechanism is omitted, and the joint structure is greatly simplified.

According to the vertical rotary linear cutting machine tool, the rotary rod is rotated, and the rotary rod drives the rotary drum to rotate, so that the electrode wire is wound on the side wall of the rotary drum, the pre-tightening force of the electrode wire is convenient to adjust, a special electrode wire tension mechanism does not need to be designed, and the structure is simplified.

Compared with a quick wire-moving electric spark wire cutting machine tool, the vertical rotary wire cutting machine tool adopts the short wire electrode and the wire electrode is wound and fixed on the side wall of the roller, so that the wire electrode is convenient to clamp and change wires after wire breakage;

the vertical rotary wire cutting machine tool has the advantages that the vertical rotary wire cut electrical discharge machining electrode wire moves stably, and the machining precision is high; the electrode wire has small external tension, is not easy to break, has less processing auxiliary time and high processing efficiency; the electrode wire has the typical advantages of uniform abrasion, long service life and the like.

Drawings

FIG. 1 is a schematic structural view of a vertical rotary wire-cut electrical discharge machining apparatus according to a first embodiment of the present invention;

FIG. 2 is an enlarged view of the structure at A shown in FIG. 1;

FIG. 3 is a schematic view of the internal structure of the joint shown in FIG. 2;

FIG. 4 is a side view of the mounting block structure shown in FIG. 3;

FIG. 5 is a top view of the internal structure of the column of FIG. 1;

fig. 6 is a top view of the internal structure of the fixing plate shown in fig. 1;

fig. 7 is a schematic structural view of a vertical rotary wire-cut electrical discharge machining apparatus according to a second embodiment of the present invention.

Reference numbers in the figures: 1. the device comprises a base, 2, a lifting mechanism, 21, a bearing seat, 22, a screw rod, 23, a first variable frequency motor, 3, a driving mechanism, 31, a fixing plate, 32, a belt, 33, a second variable frequency motor, 34, a fixing shaft, 35, a rolling shaft, 36, a fixing wheel, 4, a fixing mechanism, 41, a joint, 42, a clamping groove, 43, a roller, 44, a rotating rod, 5, a supporting mechanism, 51, a support, 52, a support, 6, an electrode wire, 7, a connecting mechanism, 71, a sliding groove, 72, an upright column, 73, a sliding block, 8, an electric hydraulic rod, 9, an adjusting mechanism, 91, a fixing block, 92, a groove, 93, a limiting rod, 94, a mounting plate, 95 and a convex block.

Detailed Description

The invention is further described with reference to the following figures and embodiments.

The first embodiment is as follows:

please refer to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5 and fig. 6 in combination, in which fig. 1 is a schematic structural view of a vertical rotary wire-cut machine according to a first embodiment of the present invention; FIG. 2 is an enlarged view of the structure at A shown in FIG. 1; FIG. 3 is a schematic view of the internal structure of the joint shown in FIG. 2; FIG. 4 is a side view of the mounting block structure shown in FIG. 3; FIG. 5 is a top view of the internal structure of the column of FIG. 1; fig. 6 is a top view of the internal structure of the fixing plate shown in fig. 1. The vertical rotary wire cutting machine comprises: a base 1; the connecting mechanism 7 is installed at the edge of the top surface of the base 1; the supporting mechanism 5 is fixed on the side wall of the connecting mechanism 7; the lifting mechanism 2 comprises a bearing seat 21, a screw rod 22 and a first variable frequency motor 23, the first variable frequency motor 23 is installed at the top end of the connecting mechanism 7, one end of the first variable frequency motor 23 is connected with the screw rod 22, the screw rod 22 is rotatably connected with the inside of the bearing seat 21, the bearing seat 21 is fixed at the bottom end of the connecting mechanism 7, and the screw rod 22 is in threaded connection with the side wall of the supporting mechanism 5; the driving mechanism 3 is fixed on the side wall of the supporting mechanism 5; the fixing mechanism 4 comprises joints 41, clamping grooves 42, a roller 43 and a rotating rod 44, the two joints 41 are respectively and rotatably connected with the side wall of the supporting mechanism 5, and one end of each joint 41 is connected with the driving mechanism 3; the other end of the joint 41 is arranged in the clamping groove 42, the inside of the clamping groove 42 is rotatably connected with the roller 43, and one end of the roller 43 is fixedly connected with the rotating rod 44; the adjusting mechanism 9, the said adjusting mechanism 9 is mounted to the sidewall of the said joint 41; the electrode wire 6 is wound on the side wall of the roller 43.

The supporting mechanism 5 comprises a support 51 and a support 52, two ends of the support 51 are respectively rotatably connected with the joints 41, the side walls of the support 51 are symmetrically installed on the support 52, the inside of the support 52 is in threaded connection with the screw 22, and for convenience, the screw 22 drives the support 52 and the support 51 to continuously move up and down by utilizing the turbine screw principle so as to facilitate the cutting of workpieces by the electrode wire 6, so that the screw 22 is convenient to rotate.

The connecting mechanism 7 comprises a sliding groove 71, a vertical column 72 and a sliding block 73, the vertical column 72 is installed at the edge of the top surface of the base 1, the side wall of the vertical column 72 is symmetrically arranged on the sliding groove 71, the sliding groove 71 is connected with the sliding block 73 in a sliding manner, the side wall of the support 51 is symmetrically and fixedly connected with the sliding block 73, when the support 51 moves up and down continuously, the support 51 drives the sliding block 73 to slide inside the vertical column 72, the sliding groove 71 is connected with the sliding block 73 in a sliding manner, so that the sliding block 73 is along with the sliding groove 71 to move up and down continuously, and the support 51 moves up and down linearly, so that the electrode wire 6 moves relatively in the vertical direction.

The driving mechanism 3 comprises a fixed plate 31, a belt 32, a second variable frequency motor 33, a fixed shaft 34, a roller 35 and a fixed wheel 36, the fixed plate 31 is symmetrically installed on the side wall of the bracket 51, and the second variable frequency motor 33 is installed on the top surface of the fixed plate 31; one end of the second variable frequency motor 33 is provided with the fixed shaft 34, the fixed shaft 34 is fixedly connected with the fixed wheel 36, and the fixed wheel 36 is rotatably connected with the inside of the fixed plate 31; the fixed pulley 36 with the lateral wall suit of roller bearing 35 the belt 32, just roller bearing 35 fixed connection the joint 41 is opened second inverter motor 33, second inverter motor 33 drives fixed axle 34 rotates, fixed axle 34 drives the fixed pulley 36 is in the inside of fixed plate 31 rotates, thereby makes the fixed pulley 36 drives the belt 32 with roller bearing 35 rotates, ball 35 drives the joint 41 with wire electrode 6 constantly rotates, makes things convenient for wire electrode 6 cuts the work piece.

The adjusting mechanism 9 comprises a fixing block 91, a groove 92, a limiting rod 93, a mounting plate 94 and a bump 95, the mounting plate 94 in a circular truncated cone shape is mounted on the side wall of the joint 41, the groove 92 is arranged inside the joint 41, the fixing block 91 and the bump 95 are rotatably connected inside the groove 92, the fixing block 91 is fixedly connected with the roller 43, and the bumps 95 are mounted on the side wall of the fixing block 91 at equal intervals; the side wall of the mounting plate 94 is in threaded connection with the limiting rod 93, the limiting rod 93 abuts against the projection 95 and the fixing block 91, the rotating rod 44 and the limiting rod 93 are respectively located at two ends of the joint 41, and the center of the rotating rod 44 is aligned with the center of the mounting plate 94; when the electrode wire 6 is wound on the side wall of the roller 43, the rotating rod 44 is rotated, the rotating rod 44 drives the roller 43 to rotate, so that the electrode wire 6 is wound on the side wall of the roller 43, the electrode wire 6 fixed on the joint 41 is tightened, the limiting rod 93 is rotated, the limiting rod 93 rotates inside the mounting plate 94 to enter the groove 92, the limiting rod 93 rotates to be close to the fixing block 91, the limiting rod 93 is made to abut against the fixing block 91 and the lug 95, the fixing block 91 is fixed, the fixing block 91 is avoided from rotating with the roller 43, and therefore the electrode wire 6 is in a tightened state.

The working principle of the vertical rotary linear cutting machine tool provided by the invention is as follows: the device is externally connected with a power supply, the power supply of the first variable frequency motor 23 and the power supply of the second variable frequency motor 33 are turned on, the first variable frequency motor 23 drives the screw rod 22 to rotate, the screw rod 22 drives the support 52 and the support 51 to continuously move by utilizing the principle of a turbine screw rod, at the moment, the support 51 drives the slide block 73 to slide in the upright post 72, the slide block 73 is connected in the slide groove 71 in a sliding manner, the slide block 73 continuously moves up and down along the slide groove 71, so that the support 51 linearly moves up and down, the electrode wire 6 relatively moves in the vertical direction, and the rotation direction of the screw rod 22 is changed by controlling the rotation direction of the first variable frequency motor 23, so that the movement direction of the support 51 is changed, and the support 51 continuously linearly moves up and down. Open second inverter motor 33, second inverter motor 33 drives fixed axle 34 rotates, fixed axle 34 drives the tight pulley 36 is in the inside of fixed plate 31 rotates, thereby makes tight pulley 36 drives belt 32 with roller bearing 35 rotates, ball 35 drives joint 41 with wire electrode 6 constantly rotates, thereby is convenient for wire electrode 6 cuts the work piece.

Example two:

please refer to fig. 2, fig. 3, fig. 4, fig. 6 and fig. 7 in combination, wherein fig. 2 is an enlarged schematic view of a structure at a position a shown in fig. 1; FIG. 3 is a schematic view of the internal structure of the joint shown in FIG. 2; FIG. 4 is a side view of the mounting block structure shown in FIG. 3; fig. 6 is a top view of the internal structure of the fixing plate shown in fig. 1; fig. 7 is a schematic structural view of a vertical rotary wire-cut electrical discharge machining apparatus according to a second embodiment of the present invention. The vertical rotary wire cutting machine comprises: a base 1; the connecting mechanism 7 is installed at the edge of the top surface of the base 1; the supporting mechanism 5 is fixed on the side wall of the connecting mechanism 7; the top end of the upright post 72 is provided with an electric hydraulic rod 8, and one end of the electric hydraulic rod 8 is fixedly connected with the support 52; the driving mechanism 3 is fixed on the side wall of the supporting mechanism 5; the fixing mechanism 4 comprises joints 41, clamping grooves 42, a roller 43 and a rotating rod 44, the two joints 41 are respectively and rotatably connected with the side wall of the supporting mechanism 5, and one end of each joint 41 is connected with the driving mechanism 3; the other end of the joint 41 is arranged in the clamping groove 42, the inside of the clamping groove 42 is rotatably connected with the roller 43, and one end of the roller 43 is fixedly connected with the rotating rod 44; the adjusting mechanism 9, the said adjusting mechanism 9 is mounted to the sidewall of the said joint 41; the electrode wire 6 is wound on the side wall of the roller 43.

The supporting mechanism 5 includes a bracket 51 and a support 52, two ends of the bracket 51 are respectively rotatably connected to the joints 41, and the support 52 is symmetrically installed on a side wall of the bracket 51, so that the electric hydraulic rod 8 drives the bracket 51 to continuously move up and down in order to facilitate the operation of the electric hydraulic rod 8.

The working principle of the vertical rotary linear cutting machine tool provided by the invention is as follows: the device is externally connected with a power supply, the electric hydraulic rod 8 and the second variable frequency motor 33 are turned on, the electric hydraulic rod 8 operates to enable the electric hydraulic rod 8 to drive the support 51 to continuously move up and down, at the moment, the support 51 drives the sliding block 73 to slide in the upright post 72, the sliding block 73 is connected in the sliding groove 71 in a sliding mode, the sliding block 73 continuously moves up and down along the sliding groove 71, the support 51 moves up and down in a linear mode, and therefore the electrode wire 6 moves in the vertical direction relatively. Open second inverter motor 33, second inverter motor 33 drives fixed axle 34 rotates, fixed axle 34 drives the tight pulley 36 is in the inside of fixed plate 31 rotates, thereby makes tight pulley 36 drives belt 32 with roller bearing 35 rotates, ball 35 drives joint 41 with wire electrode 6 constantly rotates, thereby is convenient for wire electrode 6 cuts the work piece.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A vertical rotary wire cutting machine, comprising:

a base (1);

the connecting mechanism (7), the connecting mechanism (7) is installed at the edge of the top surface of the base (1);

the supporting mechanism (5), the said supporting mechanism (5) is fixed to the sidewall of the said linkage mechanism (7);

the lifting mechanism (2) comprises a bearing seat (21), a screw rod (22) and a first variable frequency motor (23), the first variable frequency motor (23) is installed at the top end of the connecting mechanism (7), one end of the first variable frequency motor (23) is connected with the screw rod (22), the screw rod (22) is rotatably connected with the inside of the bearing seat (21), the bearing seat (21) is fixed at the bottom end of the connecting mechanism (7), and the screw rod (22) is in threaded connection with the side wall of the supporting mechanism (5);

the driving mechanism (3), the said driving mechanism (3) is fixed to the sidewall of the said supporting mechanism (5);

the fixing mechanism (4) comprises joints (41), clamping grooves (42), a roller (43) and a rotating rod (44), the two joints (41) are respectively and rotatably connected with the side wall of the supporting mechanism (5), and one end of each joint (41) is connected with the driving mechanism (3); the other end of the joint (41) is arranged in the clamping groove (42), the inside of the clamping groove (42) is rotatably connected with the roller (43), and one end of the roller (43) is fixedly connected with the rotating rod (44);

the adjusting mechanism (9), the adjusting mechanism (9) is installed on the side wall of the joint (41);

the electrode wire (6) is wound on the side wall of the roller (43).

2. The vertical rotary wire cutting machine according to claim 1, wherein the support mechanism (5) comprises a bracket (51) and a support (52), two ends of the bracket (51) are respectively connected with the joints (41) in a rotating manner, the support (52) is symmetrically installed on the side wall of the bracket (51), and the inside of the support (52) is in threaded connection with the screw rod (22).

3. The vertical rotary wire cutting machine according to claim 2, wherein the connecting mechanism (7) comprises a sliding groove (71), a column (72) and a sliding block (73), the column (72) is installed at the edge of the top surface of the base (1), the side walls of the column (72) are symmetrically arranged on the sliding groove (71), the sliding block (73) is slidably connected inside the sliding groove (71), and the sliding block (73) is symmetrically and fixedly connected with the side walls of the bracket (51).

4. The vertical rotary wire cutting machine according to claim 3, wherein the driving mechanism (3) comprises a fixed plate (31), a belt (32), a second variable frequency motor (33), a fixed shaft (34), a roller (35) and a fixed wheel (36), the fixed plate (31) is symmetrically installed on the side wall of the bracket (51), and the second variable frequency motor (33) is installed on the top surface of the fixed plate (31); one end of the second variable frequency motor (33) is provided with the fixed shaft (34), the fixed shaft (34) is fixedly connected with the fixed wheel (36), and the fixed wheel (36) is rotatably connected with the inside of the fixed plate (31); the belt (32) is sleeved on the side walls of the fixed wheel (36) and the roller (35), and the roller (35) is fixedly connected with the joint (41).

5. The vertical rotary wire cutting machine according to claim 1, wherein the adjusting mechanism (9) comprises a fixing block (91), a groove (92), a limiting rod (93), a mounting plate (94) and a lug (95), the mounting plate (94) is installed on the side wall of the joint (41) in a circular truncated cone shape, the groove (92) is arranged inside the joint (41), the fixing block (91) and the lug (95) are rotatably connected inside the groove (92), the fixing block (91) is fixedly connected with the roller (43), and the lug (95) is installed on the side wall of the fixing block (91) at equal intervals; the lateral wall of mounting panel (94) with threaded connection between gag lever post (93), gag lever post (93) are contradicted lug (95) with fixed block (91).

6. The vertical rotary wire cutting machine according to claim 5, wherein the rotating rod (44) and the stopper rod (93) are respectively located at both ends of the joint (41), and the center of the rotating rod (44) is aligned with the center of the mounting plate (94).

7. The vertical rotary wire cutting machine according to claim 3, wherein the top end of the upright (72) is provided with an electro-hydraulic rod (8), and one end of the electro-hydraulic rod (8) is fixedly connected with the support (52).