Wire cutting threading contact sensing piece and contact sensing circuit

Abstract

The utility model discloses a wire cutting threading contact sensing piece and a contact sensing circuit, and belongs to the technical field of electrode wire cutting equipment. The wire cutting threading contact sensing piece comprises an installation part, a connection part and a contact part which are sequentially arranged from top to bottom, the installation part is installed on a wire feeding device, the contact part is arranged at the end, away from the wire feeding device, of the connection part, the installation part and the contact part are provided with wire guide holes, the wire guide holes are communicated with an upper machine head, and the installation part and the contact part are locally connected through the connection part. An inclined gap is arranged between the installation portion and the contact portion, the installation portion, the connection portion and the contact portion are made of conductive materials, and when the contact portion is connected with the slope portion of the workpiece, the contact portion is partially inclined towards the connection portion. According to the utility model, the contact part is partially inclined towards the connecting part through the inclined gap, so that the whole contact sensing piece is not influenced, the threading success rate is further improved, and the problem of low threading success rate caused by the overall deviation of the buffer sleeve in the prior art is solved.

Description

Technical Field

[0001] The utility model belongs to the field of wire electrode cutting equipment, specifically a wire cutting wire threading contact sensing member and a contact sensing circuit. Background Art

[0002] In the Chinese utility model patent with the publication number: CN221019024U, publication date: May 28, 2024, and utility model name: A wire electrode feeding device, it is disclosed that: "A wire electrode feeding device, characterized in that it includes: a fixed seat (1); a frame (2) installed on the fixed seat (1), and a wire guiding channel (21) suitable for the wire to pass through is provided in the middle of the frame (2); a buffer sleeve (3) sleeved on the bottom of the frame (2), a spring (4) is provided between the buffer sleeve (3) and the frame (2), and a buffer stroke is formed between the buffer sleeve (3) and the frame (2), and the direction of the buffer stroke is the same as the direction of the wire guiding channel (21)." Through the cooperation of the frame, the spring and the buffer sleeve, it can enable the wire cutting machine to detect the completion of the alignment process and then perform the wire threading process when the upper head of the wire cutting machine aligns with the wire cutting hole of the workpiece and moves to a predetermined position during the alignment process.

[0003] During the actual wire threading process, the buffer sleeve in the above technical solution is in contact with the workpiece, and the spring always applies a force towards the workpiece to the buffer sleeve. When the buffer sleeve is in contact with the slope part of the workpiece, it is easy to cause the overall offset of the buffer sleeve, resulting in a low wire threading success rate. Summary of the Utility Model

[0004] Utility Model Purpose: To provide a wire cutting wire threading contact sensing member and a contact sensing device. By having an inclined gap between the connecting part and the contact part of the sensing member, the wire threading success rate can be improved, and the problem in the prior art that the overall offset of the buffer sleeve leads to a low wire threading success rate is solved.

[0005] The technical solution of the utility model is as follows: In the first aspect, a wire cutting wire threading contact sensing member is installed on the upper head of the wire cutting machine.

[0006] The wire cutting wire threading contact sensing member includes: an installation part, a connecting part, and a contact part arranged in sequence from top to bottom.

[0007] The installation part is installed on the wire feeding device, and the contact part is arranged at one end of the connecting part away from the wire feeding device.

[0008] The installation part and the contact part are provided with wire guiding holes, and the wire guiding holes are communicated with the upper head of the wire cutting machine.

[0009] The installation part and the contact part are locally connected through the connecting part, so that an inclined gap is formed between the installation part and the contact part.

[0010] The installation part, the connecting part, and the contact part are made of conductive materials.

[0011] When the contact part contacts the ramp part of the workpiece, the contact part is locally inclined towards the connecting part.

[0012] In a further embodiment of the first aspect, the size of the inclined gap ≤ 0.5 mm.

[0013] In a further embodiment of the first aspect, the size of the inclined gap = 0.2 mm.

[0014] In a further embodiment of the first aspect, the connecting part is at least one strip-shaped protrusion arranged along the center line of the upper surface of the contact part.

[0015] In a further embodiment of the first aspect, the connecting part is two symmetrically arranged strip-shaped protrusions.

[0016] In a further embodiment of the first aspect, the ratio of the width of the connecting part to the diameter of the upper surface of the contact part ≤ 1:6.

[0017] In a further embodiment of the first aspect, the ratio of the width of the connecting part to the diameter of the upper surface of the contact part ≤ 0.4:6.

[0018] In a further embodiment of the first aspect, the mounting part is provided with a threaded structure, and the mounting part is mounted on the wire feeding device through the threaded structure.

[0019] In a further embodiment of the first aspect, the mounting part, the connecting part and the contact part are made of stainless steel or copper.

[0020] In the second aspect, a wire cutting wire threading contact sensing circuit is electrically connected to the electric control system of the machine tool.

[0021] The wire cutting wire threading contact sensing circuit includes: the wire cutting wire threading contact sensing part, the first conductive part and the second conductive part described in the first aspect.

[0022] The wire cutting wire threading contact sensing part and the first conductive part are mounted on the upper headstock, and the wire cutting wire threading contact sensing part and the first conductive part can be energized.

[0023] The second conductive part is used to connect the workpiece.

[0024] One of the first conductive part and the second conductive part is used to connect the detection discharge module of the electric control system, and the other is used to connect the detection power receiving module of the electric control system.

[0025] When the wire cutting wire threading contact sensing part contacts the workpiece, the first conductive part, the wire cutting wire threading contact sensing part, the workpiece and the second conductive part connect the detection discharge module and the detection power receiving module of the electric control system.

[0026] The beneficial effects of the present utility model are as follows: In this application, there is an inclined gap between the connection part and the contact part of the sensing part, causing the contact part to partially tilt towards the connection part through the inclined gap, only reducing the local size of the inclined gap without affecting the overall contact sensing part, thereby improving the wire threading success rate and solving the problem of low wire threading success rate caused by the overall offset of the buffer sleeve in the prior art. Description of the Drawings

[0027] Figure 1 is an axonometric schematic diagram of the contact sensing part of the present utility model.

[0028] Figure 2 is a partial sectional axonometric schematic diagram of the contact sensing part of the present utility model.

[0029] Figure 3 is a bottom view sectional view of the contact sensing part of the present utility model.

[0030] Figure 4 is an axonometric schematic diagram of an embodiment where the contact sensing part of the present utility model is installed on the upper headstock.

[0031] Figure 5 is a sectional schematic diagram of an embodiment of the wire cutting wire threading contact sensing circuit of the present utility model.

[0032] The reference numerals shown in the figures are: mounting part 1, connecting part 2, contact part 3, threaded structure 4, wire threading base 5, wire guide tube 6, first conductive part 7, workpiece 8, second conductive part 9. Detailed Embodiment

[0033] In the following description, a large number of specific details are given to provide a more thorough understanding of the present utility model. However, it is obvious to those skilled in the art that the present utility model can be implemented without one or more of these details. In other examples, some well-known technical features are not described to avoid confusion with the present utility model.

[0034] This application discloses a wire cutting wire threading contact sensing part and a contact sensing device. The wire cutting wire threading contact sensing part is installed on the upper headstock. By having an inclined gap between the connection part and the contact part of the sensing part, the wire threading success rate can be improved, solving the problem of low wire threading success rate caused by the overall offset of the buffer sleeve in the prior art.

[0035] In the first aspect, as Figure 1 and 2 shown, the contact sensing part includes: a mounting part 1, a connecting part 2, and a contact part 3 arranged in sequence from top to bottom.

[0036] The mounting part 1 is installed on the wire feeding device, and the contact part 3 is arranged at one end of the connecting part 2 away from the wire feeding device.

[0037] The installation part 1 and the contact part 3 are provided with wire guiding holes, and the wire guiding holes communicate with the upper machine head.

[0038] The installation part 1 and the contact part 3 are locally connected through the connecting part 2, so that there is an inclined gap between the installation part 1 and the contact part 3.

[0039] The installation part 1, the connecting part 2 and the contact part 3 are made of conductive materials, and the installation part 1, the connecting part 2 and the contact part 3 are made of stainless steel or copper materials.

[0040] When the contact part 3 is in contact with the slope part of the workpiece 8, the contact part 3 is locally inclined towards the connecting part 2.

[0041] Regarding the inclined gap, the size of the inclined gap ≤ 0.5 mm.

[0042] In a preferred embodiment, the size of the inclined gap = 0.2 mm.

[0043] When the contact part 3 is inclined, it does not affect its wire guiding hole, thereby improving the wire threading success rate.

[0044] Regarding the connecting part 2, as Figure 3 shown, the connecting part 2 is at least one strip-shaped protrusion arranged along the center line of the upper surface of the contact part 3.

[0045] As Figure 3 shown, the connecting part 2 is two symmetrically arranged strip-shaped protrusions.

[0046] Setting the connecting part 2 on the center line of the contact part 3 can increase the effective space of the inclined gap.

[0047] Among them, the ratio of the width of the connecting part 2 to the diameter of the upper surface of the contact part 3 ≤ 1:6.

[0048] In a preferred embodiment, the ratio of the width of the connecting part 2 to the diameter of the upper surface of the contact part 3 ≤ 0.4:6, and the width of the connecting part 2 can be 0.4 mm, and the diameter of the upper surface of the contact part 3 is 6 mm.

[0049] While the connecting part 2 can connect the installation part 1 and the contact part 3, it can increase the effective area of the inclined gap, and further reduce the influence rate of the contact part 3 on the overall contact sensing part.

[0050] Regarding the installation part 1, as Figure 1 and 2 shown, the installation part 1 is provided with a threaded structure 4, and the installation part 1 is detachably installed on the wire feeding device through the threaded structure 4, and the angle of the wire cutting wire threading contact sensing part can be rotated according to the slope part of the workpiece 8, as Figure 1 shown, the side wall of the installation part 1 is provided with a platform part to facilitate the rotation of the wire cutting wire threading contact sensing part.

[0051] In a second aspect, a wire-cutting wire threading contact sensing circuit is electrically connected to the electric control system of the machine tool.

[0052] As Figure 4 and 5 shown, the wire-cutting wire threading contact sensing circuit includes: the wire-cutting wire threading contact sensing component described in the first aspect, a first conductive member 7, and a second conductive member 9.

[0053] The wire-cutting wire threading contact sensing component and the first conductive member 7 are installed on the upper headstock, and the wire-cutting wire threading contact sensing component and the first conductive member 7 can be energized.

[0054] The second conductive member 9 is used to connect to the workpiece 8.

[0055] As Figure 5 shown, one of the first conductive member 7 and the second conductive member 9 is used to connect to the detection discharge module of the electric control system, and the other is used to connect to the detection power receiving module of the electric control system.

[0056] When the wire-cutting wire threading contact sensing component is in contact with the workpiece 8, the first conductive member 7, the wire-cutting wire threading contact sensing component, the workpiece 8, and the second conductive member 9 connect the detection discharge module and the detection power receiving module of the electric control system.

[0057] In this embodiment, the upper headstock includes Figure 4 and 5 shown wire threading base 5 and wire guide tube 6. The wire guide tube 6 is detachably installed on the wire threading base 5 through a screw structure. The wire threading base 5 and the wire guide tube 6 are made of conductive materials such as stainless steel, copper, or aluminum.

[0058] The installation part 1 of the wire-cutting wire threading contact sensing component is installed on the wire guide tube 6.

[0059] The first conductive member 7 and the second conductive member 9 can be electrodes. As Figure 5 shown, the first conductive member 7 and the second conductive member 9 are connected to the detection discharge module and the detection power receiving module through wires.

[0060] The second conductive member 9 can also be a wire clamp. The second conductive member 9 can also be connected to a fixture so that the second conductive member 9 is electrically connected to the workpiece 8 through the fixture.

[0061] Working method: First, the wire-cutting machine tool controls the wire-cutting wire threading contact sensing component on the upper headstock to align with the wire threading hole of the workpiece 8. Then, the contact part 3 of the wire-cutting wire threading contact sensing component is brought into contact with the workpiece 8. The first conductive member 7, the wire-cutting wire threading contact sensing component, the workpiece 8, and the second conductive member 9 connect the detection discharge module and the detection power receiving module of the electric control system, causing the wire-cutting machine tool to control the upper headstock to stop moving. Finally, the wire feeding device passes the electrode wire through the wire threading hole of the workpiece 8.

[0062] When the workpiece 8 has a ramp portion and the contact portion 3 of the wire threading contact sensing member contacts the ramp portion of the workpiece 8, the contact portion 3 is locally inclined towards the connecting portion 2 through the inclined gap, so that the overall contact sensing member is not affected.

[0063] As described above, although the present utility model has been shown and described with reference to specific preferred embodiments, it should not be construed as a limitation of the present utility model itself. Various changes in form and details may be made without departing from the spirit and scope of the present utility model as defined by the appended claims.

Claims

1. A wire cutting wire threading contact sensor, which is installed on the upper headstock; It is characterized in that The wire cutting wire threading contact sensor includes: a mounting portion, a connecting portion, and a contact portion that are sequentially arranged from top to bottom; The mounting portion is installed on the wire feeding device, and the contact portion is arranged at one end of the connecting portion away from the wire feeding device; The mounting portion and the contact portion are provided with wire guiding holes, and the wire guiding holes communicate with the upper headstock; The mounting portion and the contact portion are partially connected by the connecting portion, so that there is an inclined gap between the mounting portion and the contact portion; The mounting portion, the connecting portion, and the contact portion are made of conductive materials; When the contact portion contacts the slope portion of the workpiece, the contact portion is partially inclined towards the connecting portion.

2. The wire cutting wire threading contact sensing member according to claim 1, characterized in that, The size of the inclined gap ≤ 0.5 mm.

3. The wire-cutting wire-piercing contact sensing member according to claim 2, wherein, The size of the inclined gap = 0.2 mm.

4. The wire cutting wire threading contact sensing part according to claim 1, wherein, The connecting portion is at least one strip-shaped protrusion arranged along the center line of the upper surface of the contact portion.

5. The wire-cutting wire-passing contact sensing element according to claim 4, wherein The connecting portion is two symmetrically arranged strip-shaped protrusions.

6. The wire-cutting wire-piercing contact sensing member according to claim 4, characterized in that, The ratio of the width of the connecting portion to the diameter of the upper surface of the contact portion ≤ 1:

6.

7. The wire cutting wire threading contact sensing part according to claim 6, characterized in that, The ratio of the width of the connecting portion to the diameter of the upper surface of the contact portion ≤ 0.4:

6.

8. The wire cutting wire threading contact sensing part according to claim 1, characterized in that The mounting portion is provided with a threaded structure, and the mounting portion is installed on the wire feeding device through the threaded structure.

9. The wire-cutting wire-passing contact sensing member according to claim 1, wherein, The mounting portion, the connecting portion, and the contact portion are made of stainless steel or copper.

10. A wire cutting wire threading contact sensing circuit, which is electrically connected to the electric control system of the machine tool; Characterized in that, The wire cutting wire threading contact sensing circuit includes: the wire cutting wire threading contact sensor according to any one of claims 1-9, a first conductive member, and a second conductive member; The wire cutting wire threading contact sensor and the first conductive member are installed on the upper headstock, and the wire cutting wire threading contact sensor and the first conductive member can be energized; The second conductive member is used to connect the workpiece; One of the first conductive member and the second conductive member is used to connect the detection discharge module of the electric control system, and the other is used to connect the detection power receiving module of the electric control system; When the wire cutting wire threading contact sensor contacts the workpiece, the first conductive member, the wire cutting wire threading contact sensor, the workpiece, and the second conductive member connect the detection discharge module and the detection power receiving module of the electric control system.

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