Tensioning wire discharging device of medium-speed wire cut electric discharge machine

Abstract

The utility model provides a tensioning wire outlet device of a medium-speed wire cut electrical discharge machine, and belongs to the technical field of medium-speed wire cut electrical discharge machine.The tensioning wire outlet device comprises a base, a sliding seat and a charging barrel, the charging barrel is used for outputting molybdenum wires wound on the charging barrel through rotation and is arranged on the sliding seat, and a sliding mechanism is arranged between the sliding seat and the base; the sliding mechanism comprises a driving assembly, and a guide rail and a sliding block which are arranged between the first inclined surface and the second inclined surface; compared with a traditional medium-speed wire cut electric discharge machine which adopts a tension adjusting mechanism with a plurality of tensioning wheels, the wire outlet device with the tensioning function has the advantages that the number of the tensioning wheels can be reduced, the structure of the device and the steps of threading and winding molybdenum wires are simplified, and the production efficiency is improved. And meanwhile, the problems that the multiple tensioning wheels vibrate in the working process and the cleaning difficulty of the multiple tensioning wheels is large after long-term machining are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to middle wire cutting technology field, concretely relates to a tensioning wire outlet device of middle wire electric spark wire cutting machine. BACKGROUND

[0002] The middle wire electric spark wire cutting machine is a kind of equipment for precision machining, is specially used for cutting conductive material. Its basic principle is to carry out etching machining on workpiece by pulse discharge, removes material using the electric spark generated between electrode and workpiece. Working fluid (usually deionized water or special oil) as medium, help cooling, remove corrosion product and prevent electrode and workpiece direct contact. The middle wire electric spark wire cutting machine combines rough machining and finishing ability, can realize higher machining precision, is suitable for machining complex shape and high hardness material. The equipment usually uses molybdenum wire as cutting electrode, has good conductivity and wear resistance. It is widely used in mould manufacturing, aerospace, automobile, electronics and other industries.

[0003] The middle wire electric spark wire cutting machine generally includes tensioning mechanism for tensioning molybdenum wire, and the traditional tensioning mechanism is that multiple tensioning wheels are arranged back and forth at intervals, and molybdenum wire is wound and conveyed on it to realize tensioning effect. However, more tensioning wheels make the overall structure complex, and it is troublesome to thread molybdenum wire, and vibration is easy to occur in working process, which affects the tensioning effect of molybdenum wire, and it is difficult to clean multiple tensioning wheels after long-term processing. UTILITY MODEL CONTENTS

[0004] The utility model aims at overcoming the shortcomings and deficiencies of prior art, and provides a tensioning wire outlet device of middle wire electric spark wire cutting machine.

[0005] The technical scheme adopted by the utility model is as follows: the application provides a tensioning wire outlet device of middle wire electric spark wire cutting machine, which comprises a base, a sliding seat and a barrel, the barrel is used to wind molybdenum wire on it by rotating output, and it is arranged on the sliding seat, a first inclined surface or a first plane is arranged on the bottom of the sliding seat and faces the output direction of molybdenum wire, a second inclined surface parallel to the first inclined surface or a second plane parallel to the first plane is arranged on the base, a sliding mechanism is arranged between the first inclined surface and the second inclined surface or between the first plane and the second plane, and the sliding mechanism comprises a driving assembly and a guide rail and a sliding block arranged between the first inclined surface and the second inclined surface or between the first plane and the second plane.

[0006] In some embodiments, the drive assembly includes a servo motor, a screw rod and a slider. The screw rod is arranged on the second inclined plane. The slider slides and fits with the screw rod and is connected to the sliding seat. The servo motor is connected to one end of the screw rod and drives it to rotate. Guide rails are arranged on both sides of the screw rod on the second inclined plane. The sliding block slides and is connected to the sliding seat.

[0007] In some embodiments, the first inclined surface and the second inclined surface are inclined upward.

[0008] In some embodiments, an inclination angle of the first inclined surface and the second inclined surface relative to a horizontal plane is not less than 3°.

[0009] In some embodiments, the barrel includes two fixed seats arranged at intervals on the sliding seat and a cylinder body rotatably arranged between the two fixed seats, one end of the cylinder body is provided with a secondary cylinder portion with a reduced diameter, and a clamping ring is provided on the secondary cylinder portion, the clamping ring is slidably arranged along the axial direction of the secondary cylinder portion, and a clamping groove is formed between the clamping ring and the cylinder body, and a pushing assembly is provided on the fixed seat close to the clamping ring, and the pushing assembly is used to push the clamping ring to move along the axial direction of the secondary cylinder portion.

[0010] In some embodiments, connecting sub-cylinder portions are coaxially arranged at both ends of the barrel, and the connecting sub-cylinder portions are rotatably connected to the fixed seat through bearings. The pushing assembly includes a plurality of pushing cylinders evenly arranged along the circumference of the connecting sub-cylinder portions, and the driving rods of the pushing cylinders are connected to the clamping ring.

[0011] In some embodiments, a wire pressing assembly is also included, which includes a pressing wheel, a pressing wheel frame, a pressing wheel seat and a wire pressing cylinder. The pressing wheel is arranged above the clamping groove, and the pressing wheel seat is arranged on a fixed seat close to the clamping groove. The middle part of the pressing wheel frame is hinged to the pressing wheel seat, and the pressing wheel is rotatably arranged at one end of the pressing wheel frame. The driving rod of the wire pressing cylinder is connected to the other end of the pressing wheel frame.

[0012] In some embodiments, a wire outlet assembly is also included, which includes a wire outlet tube, a movable seat and a wire outlet cylinder. The wire outlet tube is arranged below the clamping groove and fixed on the movable seat. One end of the wire outlet tube is arranged close to the clamping groove and is provided with an arc-shaped surface adapted to the cylinder. The wire outlet cylinder is arranged along the axial direction of the cylinder. The movable seat is slidably arranged on the wire outlet cylinder along the axial direction of the cylinder. The driving rod of the wire outlet cylinder is connected to the movable seat.

[0013] The beneficial effects of the present invention are as follows: in the present invention, under the drive of the driving component, the sliding seat moves obliquely along the first inclined surface or translates horizontally along the first plane, which can adjust the tension of the molybdenum wire. Compared with the traditional medium-wire electric spark wire cutting machine that adopts a tension adjustment mechanism with multiple tensioning wheels, multiple tensioning wheels can be eliminated, which simplifies the overall structure and simplifies the steps of threading and winding the molybdenum wire. At the same time, it avoids the vibration of multiple tensioning wheels during operation and the difficulty of cleaning multiple tensioning wheels after long-term processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, without paying creative labor, other drawings obtained based on these drawings still fall within the scope of the present invention.

[0015] Figure 1 This is a schematic diagram of the wedge-shaped tensioning wire-discharging device in the present invention;

[0016] Figure 2 This is an exploded view of the wedge-shaped tensioning wire-discharging device in the utility model;

[0017] Figure 3 It is a partial schematic diagram of the wedge-shaped tensioning wire-discharging device in the utility model;

[0018] Figure 4 This is a partial cross-sectional view of the wedge-shaped tensioning wire-discharging device in the present invention;

[0019] Figure 5 It is a schematic diagram of the wire outlet assembly in the present invention. DETAILED DESCRIPTION

[0020] The following description provides specific application scenarios and requirements for this specification, with the goal of enabling those skilled in the art to make and use the contents of this specification. Various modifications to the disclosed embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other embodiments and applications without departing from the spirit and scope of this specification. Therefore, this specification is not limited to the embodiments shown, but is intended to be accorded the broadest scope consistent with the claims.

[0021] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "longitudinal", "transverse", "radial", "length", "width", "thickness", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe this application and its embodiments, and are not intended to limit the indicated devices, elements or components to a specific orientation, or to be constructed and operated in a specific orientation.

[0022] Secondly, the terms "first", "second" and similar words do not indicate any order, quantity or importance, but are only used to distinguish different components and should not be understood as limitations on the embodiments of the present application.

[0023] Furthermore, the terms "installed," "disposed," "provided with," "connected," and "connected" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral structures; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; or internal communication between two devices, elements, or components.

[0024] For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0025] Regarding the drawings of this application, it should be clearly understood that the drawings are for illustration and description purposes only and are not intended to limit the scope of this specification. It should also be understood that the drawings are not drawn to scale.

[0026] Example 1:

[0027] like Figures 1 to 5 As shown, this embodiment provides a tensioning wire-out device for a medium-speed wire-cut electric discharge machine, comprising a base 1, a sliding seat 2 and a barrel 3. The barrel 3 is used to output the molybdenum wire wound thereon by rotation, and is arranged on the sliding seat 2. The bottom of the sliding seat 2 is provided with a first inclined surface 20 toward the output direction of the molybdenum wire. The base 1 is provided with a second inclined surface 10 parallel to the first inclined surface 20. The first inclined surface 20 and the second inclined surface 10 are inclined upward or downward. Preferably, the first inclined surface 20 and the second inclined surface 10 are inclined upward, and the inclination angle of the first inclined surface 20 and the second inclined surface 10 compared to the horizontal plane is not less than 3°. Preferably, the inclination angle is 5°. Such a setting has better tension adjustment ability.

[0028] It should be understood that it is also possible to replace the first inclined plane 20 and the second inclined plane 10 with a parallel first plane and a second plane, but the adjustability is weaker than the structure using inclined planes.

[0029] Secondly, a sliding mechanism 4 is provided between the first inclined surface 20 and the second inclined surface 10. The sliding mechanism 4 includes a driving assembly 40 and a guide rail 41 and a sliding block 42 provided between the first inclined surface 20 and the second inclined surface 10. In this embodiment, the driving assembly 40 includes a servo motor 400, a screw rod 401 and a slider 402. The screw rod 401 is provided on the second inclined surface 10. The slider 402 slides and fits on the screw rod 401 and is connected to the sliding seat 2. The servo motor 400 is connected to one end of the screw rod 401 and drives it to rotate. Guide rails 41 are provided on both sides of the screw rod 401 on the second inclined surface 10. Preferably, two sliding blocks 42 are provided to slide on the guide rails 41 and are connected to the sliding seat 2. In this way, the sliding seat 2 has better stability when moving, thereby ensuring the stability of the molybdenum wire transportation. It should be understood that the driving assembly 40 can also adopt a driving cylinder, etc., and only needs to push the sliding seat 2 to achieve movement.

[0030] Through this arrangement, under the drive of the drive assembly 40, the sliding seat 2 moves obliquely along the first inclined surface 20 to adjust the tension of the molybdenum wire. Compared with the traditional medium-wire electric spark wire cutting machine that uses a tension adjustment mechanism with multiple tensioning wheels, at least four tensioning wheels can be eliminated, which simplifies the overall structure and the steps of threading and winding the molybdenum wire. At the same time, it avoids the vibration of multiple tensioning wheels during operation and the difficulty of cleaning multiple tensioning wheels after long-term processing.

[0031] The cam 31 is provided with a plurality of fixed seats 30 and a plurality of fixed seats 310, and a plurality of fixed seats 30 are provided on the cam 31 to prevent the cam 31 from being damaged.

[0032] Secondly, both ends of the barrel 3 are coaxially provided with connecting sub-cylinder portions 310, and the connecting sub-cylinder portion 310 is rotatably connected to the fixed seat 30 through a bearing. The pushing assembly 7 includes a plurality of pushing cylinders 70 evenly arranged along the circumference of the connecting sub-cylinder portion 310, and the driving rod of the pushing cylinder 70 is connected to the clamping ring 5. In this embodiment, four pushing cylinders 70 are evenly arranged, so that the clamping ring 5 and the cylinder body 31 form a stable and reliable clamping of the molybdenum wire, and make the holding force more uniform.

[0033] In the disclosed embodiment, a wire pressing assembly 8 is also included, and the wire pressing assembly 8 includes a pressing wheel 80, a pressing wheel frame 81, a pressing wheel seat 82 and a wire pressing cylinder 83. The pressing wheel 80 is arranged above the clamping groove 6, and the pressing wheel seat 82 is arranged on the fixed seat 30 close to the clamping groove 6. The middle part of the pressing wheel frame 81 is hinged to the pressing wheel seat 82, and the pressing wheel 80 is rotatably arranged at one end of the pressing wheel frame 81. The driving rod of the wire pressing cylinder 83 is connected to the other end of the pressing wheel frame 81. The driving rod of the wire pressing cylinder 83 is used to push the pressing wheel frame 81 away from one end of the pressing wheel 80, so that the pressing wheel 80 abuts against the molybdenum wire on the barrel 3, ensuring stable output of the molybdenum wire.

[0034] In the embodiment of the present disclosure, it also includes a wire outlet assembly 9, which includes a wire outlet tube 90, a movable seat 91 and a wire outlet cylinder 92. The wire outlet tube 90 is arranged below the clamping groove 6 and fixed on the movable seat 91. One end of the wire outlet tube 90 is arranged close to the clamping groove 6 and is provided with an arc surface 900 adapted to the cylinder 31. The arc surface 900 fits the molybdenum wire wound on the barrel 3. The wire outlet cylinder 92 is arranged along the axial direction of the cylinder 31, and the movable seat 91 is slidably arranged on the wire outlet cylinder 92 along the axial direction of the cylinder 31. The driving rod of the wire outlet cylinder 92 is connected to the movable seat 91. The wire outlet tube 90 can be moved by the wire outlet cylinder 92 to ensure the smoothness and stability of the wire outlet.

[0035] In summary, after reading this detailed disclosure, those skilled in the art will appreciate that the foregoing detailed disclosure may be presented by way of example only and may not be limiting. Although not expressly stated herein, those skilled in the art will understand that the present application requires various reasonable changes, improvements, and modifications to the embodiments. Such changes, improvements, and modifications are intended to be proposed by the present application and are within the spirit and scope of the exemplary embodiments of the present application.

[0036] Furthermore, it should be understood that in the foregoing descriptions of the embodiments of this application, in order to facilitate understanding of a feature and to simplify this application, this application combines various features into a single embodiment, figure, or description thereof. However, this does not mean that the combination of these features is required. When reading this application, it is entirely possible for a person skilled in the art to label some of the devices as separate embodiments. In other words, the embodiments of this application can also be understood as the integration of multiple sub-embodiments. This also applies when the content of each sub-embodiment is less than all the features of a single aforementioned disclosed embodiment.

[0037] Finally, it should be understood that the embodiments of the application disclosed herein are illustrations of the principles of the embodiments of the present application. Other modified embodiments are also within the scope of the present application. Therefore, the embodiments disclosed in the present application are merely examples and not limitations. Those skilled in the art can adopt alternative configurations based on the embodiments in the present application to implement the applications in the present application. Therefore, the embodiments of the present application are not limited to the embodiments precisely described in the application.

Claims

1. A tensioning wire-discharging device for a medium-speed wire-cut electric discharge machine, characterized in that: The invention comprises a base (1), a sliding seat (2) and a barrel (3), wherein the barrel (3) is used for outputting the molybdenum wire wound thereon by rotation and is arranged on the sliding seat (2), and the bottom of the sliding seat (2) is provided with a first inclined surface (20) or a first plane facing the output direction of the molybdenum wire, and the base (1) is provided with a second inclined surface (10) parallel to the first inclined surface (20) or a second plane parallel to the first plane, and a sliding mechanism (4) is provided between the first inclined surface (20) and the second inclined surface (10) or between the first plane and the second plane, and the sliding mechanism (4) comprises a driving component (40) and a guide rail (41) and a sliding block (42) provided between the first inclined surface (20) and the second inclined surface (10) or between the first plane and the second plane.

2. The wire tensioning and outlet device of a medium-speed wire-cut electric discharge machine according to claim 1, characterized in that: The driving assembly (40) comprises a servo motor (400), a screw rod (401) and a slider (402); the screw rod (401) is arranged on the second inclined surface (10); the slider (402) is slidably fitted on the screw rod (401) and connected to the sliding seat (2); the servo motor (400) is connected to one end of the screw rod (401) and drives it to rotate; guide rails (41) are arranged on both sides of the screw rod (401) on the second inclined surface (10); the sliding block (42) is slidably arranged on the guide rails (41) and connected to the sliding seat (2).

3. The wire tensioning and outlet device of a medium-speed wire-cut electric discharge machine according to claim 1, characterized in that: The first inclined surface (20) and the second inclined surface (10) are inclined obliquely upward.

4. The wire tensioning and outlet device of a medium-speed wire-cut electric discharge machine according to claim 1 or 3, characterized in that: The inclination angle of the first inclined surface (20) and the second inclined surface (10) relative to the horizontal plane is not less than 3°.

5. The wire tensioning and discharging device of a medium-speed wire-cut electric discharge machine according to claim 1, characterized in that: The barrel (3) comprises two fixed seats (30) spaced apart on the sliding seat (2) and a barrel (31) rotatably arranged between the two fixed seats (30); one end of the barrel (31) is provided with a secondary barrel portion (310) with a reduced diameter, and a clamping ring (5) is sleeved on the secondary barrel portion (310); the clamping ring (5) is slidably arranged along the axial direction of the secondary barrel portion (310), and a clamping groove (6) is formed between the clamping ring (5) and the barrel (31); a pushing assembly (7) is provided on the fixed seat (30) near the clamping ring (5); the pushing assembly (7) is used to push the clamping ring (5) to move along the axial direction of the secondary barrel portion (310).

6. The wire tensioning and discharging device of a medium-speed wire-cut electric discharge machine according to claim 5, characterized in that: Both ends of the barrel (3) are coaxially provided with connecting sub-cylinder parts (310), and the connecting sub-cylinder parts (310) are rotatably connected to the fixed seat (30) through bearings. The pushing assembly (7) includes a plurality of pushing cylinders (70) uniformly arranged along the circumference of the connecting sub-cylinder part (310), and the driving rods of the pushing cylinders (70) are connected to the clamping ring (5).

7. The wire tensioning and discharging device of a medium-speed wire-cut electric discharge machine according to claim 5, characterized in that: The invention also includes a wire pressing assembly (8), which includes a pressing wheel (80), a pressing wheel frame (81), a pressing wheel seat (82) and a wire pressing cylinder (83). The pressing wheel (80) is arranged above the clamping groove (6), the pressing wheel seat (82) is arranged on a fixed seat (30) close to the clamping groove (6), the middle part of the pressing wheel frame (81) is hinged to the pressing wheel seat (82), the pressing wheel (80) is rotatably arranged at one end of the pressing wheel frame (81), and the driving rod of the wire pressing cylinder (83) is connected to the other end of the pressing wheel frame (81).

8. The wire tensioning and discharging device of a medium-speed wire-cut electric discharge machine according to claim 5, characterized in that: The invention also includes a wire-exiting assembly (9), which includes a wire-exiting tube (90), a movable seat (91) and a wire-exiting cylinder (92). The wire-exiting tube (90) is arranged below the clamping groove (6) and fixed on the movable seat (91). One end of the wire-exiting tube (90) is arranged close to the clamping groove (6) and is provided with an arc surface (900) adapted to the cylinder (31). The wire-exiting cylinder (92) is arranged along the axial direction of the cylinder (31). The movable seat (91) is slidably arranged on the wire-exiting cylinder (92) along the axial direction of the cylinder (31). The driving rod of the wire-exiting cylinder (92) is connected to the movable seat (91).

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