Wire cutting routing tension adjusting mechanism

Abstract

The utility model discloses a linear cutting wiring tension adjusting mechanism which comprises an upper tension adjusting assembly and a lower tension adjusting assembly which are arranged on a cutting line, the upper tension adjusting assembly comprises a spiral pipe, a pipe opening positioning sleeve, an adjusting sliding block, an adjusting sliding rail and a two-way lead screw pair, the cutting line penetrates through the spiral pipe in a sleeved mode, and the inner wall of the spiral pipe is smooth. The linear cutting routing tension adjusting mechanism comprises a spiral pipe, pipe opening positioning sleeves are arranged at the two ends of the spiral pipe respectively, the positioning sleeves are connected with adjusting sliding blocks, the adjusting sliding blocks are matched with the adjusting sliding rails to achieve linear sliding, and the linear cutting routing tension adjusting mechanism controls drawing tension of a cutting wire in the mode that the cutting wire penetrates through the spiral pipe in a sleeved mode, and drives the sliding blocks to slide in the face-to-face or back-to-back mode through a two-way lead screw pair. Therefore, the contact friction resistance between the cutting wire and the inner wall of the spiral pipe is changed, the cutting wire is prevented from loosening, curling and separating from a wire guide wheel groove, the tension of the cutting wire is adjusted instantly, the releasing stability of wire cutting electric sparks is improved, and the device is safe, reliable and extremely high in efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of machine tool equipment, and particularly relates to a wire cutting wire tension adjusting mechanism. Background Art

[0002] Wire cutting is often used in special machining. When cutting different plates, the tension of the cutting wire is different, especially in cutting operations at high power and low power, which is most obvious. For cutting at high power, the tension of the cutting wire should be adjusted smaller, and for cutting at low power, the tension of the cutting wire should be adjusted larger. Even when there is an occasional large resistance during cutting of the workpiece, it is also necessary to instantaneously reduce the tension of the cutting wire to ensure that the cutting wire does not break during electrical discharge machining of the workpiece. However, there is currently no effective component for instantaneously adjusting the tension of the cutting wire applied to wire cutting machine tools. Therefore, we need to specifically design an instant tension adjusting mechanism applied to wire cutting special machining machine tools to meet the tension adjustment of the cutting wire, protect the cutting wire, ensure the cutting tension, and improve the stability of wire cutting electrical discharge release. Summary of the Utility Model

[0003] The purpose of the utility model is: In view of the technical requirements that in the existing wire cutting equipment, for cutting at high power, the tension of the cutting wire should be adjusted smaller, for cutting at low power, the tension of the cutting wire should be adjusted larger, and even when there is an occasional large resistance during cutting of the workpiece, it is also necessary to instantaneously reduce the tension of the cutting wire to ensure that the cutting wire does not break during electrical discharge machining of the workpiece, we design and propose a wire cutting wire tension adjusting mechanism. The tension of the cutting wire during retraction and extension is controlled by the way of passing the cutting wire through a spiral tube, and a bidirectional screw pair is used to drive the slider to slide towards or away from each other, thereby instantaneously adjusting the pitch of the spiral tube, and thus changing the contact friction resistance between the cutting wire and the inner wall of the spiral tube, preventing the cutting wire from being loose, curled, or disengaged from the wire guide wheel groove, instantaneously adjusting the tension of the cutting wire, improving the stability of wire cutting electrical discharge release, being safe and reliable, and having extremely high efficiency.

[0004] The technical solution adopted to solve the above problems is:

[0005] A wire cutting wire tension adjusting mechanism includes an upper tension adjusting component and a lower tension adjusting component arranged on the cutting wire. The upper tension adjusting component includes a spiral tube through which the cutting wire passes, a pipe orifice positioning sleeve, an adjusting slider, an adjusting slide rail, and a bidirectional screw pair.

[0006] The inner wall of the spiral tube is smooth, generating extremely small frictional resistance at the contact surface with the cutting line. Pipe orifice positioning sleeves are respectively arranged at both ends of the spiral tube. The positioning sleeves are connected to the adjusting sliders, and the adjusting sliders cooperate with the adjusting slide rails to achieve linear sliding. One side of the adjusting slider is connected to the screw slider of the bidirectional screw pair to obtain the driving force for linear sliding. The screw of the bidirectional screw pair is provided with a bidirectional thread section and is respectively screwed and matched with the screw sliders on both sides. The screw is driven to rotate by a servo motor on one side.

[0007] The lower tension adjusting component is arranged in the download table of the wire cutting machine tool, and its structure and principle are the same as those of the upper tension adjusting component.

[0008] Further, the upper tension adjusting component and the lower tension adjusting component act alternately, that is, when the pitch of the spiral tube of the upper tension adjusting component increases, the pitch of the spiral tube of the lower tension adjusting component decreases.

[0009] Further, the pitch of the spiral tube of the upper tension adjusting component or the lower tension adjusting component increases with the wire recovery action of the cutting wire and decreases with the wire release action of the cutting wire, so as to ensure that the cutting wire in the section of the workpiece being cut maintains a greater tension.

[0010] Further, the pitch of the spiral tube of the upper tension adjusting component or the lower tension adjusting component decreases with the wire recovery action of the cutting wire and increases with the wire release action of the cutting wire, so as to ensure that the cutting wire in the section of the workpiece being cut maintains a smaller tension.

[0011] Further, the servo motor is jointly controlled by the numerical control program of the machine tool.

[0012] The beneficial effects of the present utility model are:

[0013] The wire cutting wire tension adjusting mechanism controls the tension of the cutting wire during retraction and extension by passing the cutting wire through the spiral tube, and uses the bidirectional screw pair to drive the sliders to slide towards or away from each other, thereby instantaneously adjusting the pitch of the spiral tube, and thus changing the contact frictional resistance between the cutting wire and the inner wall of the spiral tube, preventing the cutting wire from loosening, curling, and disengaging from the wire guide wheel groove, instantaneously adjusting the tension of the cutting wire, improving the stability of wire cutting electric spark release, being safe and reliable, and having extremely high efficiency. Description of the Drawings

[0014] Figure 1 is a schematic structural diagram of the wire cutting wire tension adjusting mechanism of this embodiment;

[0015] Figure 2 is Figure 1 a partial enlarged view of part A in

[0016] Figure 3 is a schematic side view of the upper tension adjusting component of this embodiment;

[0017] Among them, 1 - main shaft motor, 2 - cutting wire, 3 - guide wheel, 4 - bearing seat, 5 - first adjustment slide rail, 6 - spiral tube, 7 - bidirectional lead screw, 8 - servo motor, 9 - second adjustment slide rail, 10 - machine frame, 11 - workpiece, 12 - positioning fixture, 13 - carrier table, 14 - lower tension adjustment component, 15 - adjustment slider, 16 - first pipe orifice positioning sleeve, 17 - first adjustment slider, 18 - second adjustment slider, 19 - second pipe orifice positioning sleeve, 20 - adjustment slide rail positioning plate. Specific embodiments

[0018] Next, the technical solution of the present invention will be clearly and completely described by way of examples in conjunction with the accompanying drawings of the present invention specification.

[0019] Please refer to Figures 1 to 3 , this embodiment proposes a wire cutting wire tension adjustment mechanism, which includes an upper tension adjustment component and a lower tension adjustment component 14 arranged on the cutting wire 2. The upper tension adjustment component includes a spiral tube 6 through which the cutting wire 2 passes, a pipe orifice positioning sleeve, an adjustment slider 15, an adjustment slide rail, and a bidirectional lead screw pair.

[0020] Refer to Figure 2 , the inner wall of the spiral tube 6 is smooth, and the contact surface with the cutting wire 2 generates extremely small frictional resistance. Pipe orifice positioning sleeves are respectively arranged at both ends of the spiral tube 6 to ensure that the cutting wire 2 reduces resistance under high-speed reciprocating winding and unwinding and sliding. By using the method of instantaneously changing the pitch of the spiral tube 6, the pressing force of the cutting wire 2 on the inner wall of the spiral tube 6 is adjusted, thereby changing the magnitude of the frictional resistance and realizing the adjustment of the tension of the cutting wire 2. The positioning sleeve is connected to the adjustment slider 15, and the adjustment slider 15 cooperates with the adjustment slide rail to achieve linear sliding. One side of the adjustment slider 15 is connected to the lead screw slider of the bidirectional lead screw pair to obtain the power of linear sliding. The lead screw of the bidirectional lead screw pair is provided with a bidirectional thread section and is respectively screwed and matched with the lead screw sliders on both sides. The lead screw is driven to rotate by a servo motor 8 on one side.

[0021] Refer to Figure 1 , the lower tension adjustment component 14 is arranged in the carrier table 13 of the wire cutting machine tool, and its structure and principle are the same as those of the upper tension adjustment component.

[0022] A further implementation scheme is that the upper tension adjustment component and the lower tension adjustment component 14 act alternately, that is, when the pitch of the spiral tube 6 of the upper tension adjustment component increases, the pitch of the spiral tube 6 of the lower tension adjustment component 14 decreases.

[0023] Specifically, the pitch of the spiral tube 6 of the upper tension adjustment component or the lower tension adjustment component 14 increases with the recovery action of the cutting wire 2 and decreases with the release action of the cutting wire 2, so as to ensure that the cutting wire 2 in the section of cutting the workpiece 11 maintains a greater tension;

[0024] The pitch of the solenoid tube 6 of the upper tension adjusting assembly or the lower tension adjusting assembly 14 decreases with the recovery action of the cutting wire 2 and increases with the release action of the cutting wire 2, so as to ensure that the cutting wire 2 in the section of cutting the workpiece 11 maintains a smaller tension.

[0025] A further embodiment is that the servo motor 8 is jointly controlled by the numerical control program of the machine tool, and the power supply signals of the forward and reverse rotations of the servo motor are synchronously adjusted according to the sequence of the reciprocating winding of the cutting wire.

[0026] The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes, modifications, substitutions, and variations can be made without departing from the gist of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wire cutting wire tension adjusting mechanism, characterized in that: It includes a tension adjusting component and a lower tension adjusting component arranged on the cutting line. The upper tension adjusting component includes a spiral tube through which the cutting line passes, a pipe orifice positioning sleeve, an adjusting slider, an adjusting slide rail, and a bidirectional lead screw pair. The lower tension adjusting component is arranged in the lower loading table of the wire cutting machine tool, and its structure and principle are the same as those of the upper tension adjusting component.

2. The wire cutting wire tension adjusting mechanism according to claim 1, wherein: The inner wall of the spiral tube is smooth, generating extremely small frictional resistance with the contact surface of the cutting line. Pipe orifice positioning sleeves are respectively arranged at both ends of the spiral tube. The positioning sleeve is connected to the adjusting slider, and the adjusting slider cooperates with the adjusting slide rail to achieve linear sliding. One side of the adjusting slider is connected to the lead screw slider of the bidirectional lead screw pair to obtain the power of linear sliding. The lead screw of the bidirectional lead screw pair is provided with a bidirectional thread section and is respectively screwed and matched with the lead screw sliders on both sides. The lead screw is driven to rotate by a servo motor on one side.

3. The wire cutting wire tension adjusting mechanism according to claim 2, wherein: The upper tension adjusting component and the lower tension adjusting component act alternately, that is, when the pitch of the spiral tube of the upper tension adjusting component increases, the pitch of the spiral tube of the lower tension adjusting component decreases.

4. The wire cutting wire tension adjusting mechanism according to claim 2, wherein: The pitch of the spiral tube of the upper tension adjusting component or the lower tension adjusting component increases with the cutting line recovery action and decreases with the cutting line release action.

5. The wire cutting wire tension adjusting mechanism according to claim 2, characterized in that: The pitch of the spiral tube of the upper tension adjusting component or the lower tension adjusting component decreases with the cutting line recovery action and increases with the cutting line release action.

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