Wire cutting equipment for die steel

Abstract

The utility model relates to the technical field of wire cutting equipment, in particular to die steel wire cutting equipment which comprises a machine body, a machine table is arranged on the machine body, a clamping mechanism is arranged on the machine table, the clamping mechanism comprises a clamping table, the clamping table is fixedly connected to the machine table through bolts, and the clamping table is fixedly connected to the machine table through bolts. And the top of the clamping table is fixedly connected with a fixing screw rod. The clamping mechanism is arranged, the fastener is rotated to drive the U-shaped plate to move downwards, the protrusions on the two sides of the bottom of the U-shaped plate press the two sides of the hard plate so that the hard plate can press the workpiece, and the two sides of the U-shaped plate protrude downwards, so that when the fastener is rotated, pressure passes through the protrusions on the two sides of the U-shaped plate, and the workpiece can be clamped. Uniform and symmetrical downward pressing force is applied to the two ends of the hard plate, deformation and warping of the hard plate in the pressing process are restrained through distributed edge pressing, and the deformation problem caused by uneven stress in a traditional structure is effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of wire cutting equipment technology, specifically to a wire cutting equipment for mold steel. Background Technology

[0002] Wire EDM equipment for mold steel is a type of CNC machining equipment that uses fine metal wires as electrodes to perform high-precision cutting of high-hardness metal materials such as mold steel through electrical spark discharge. It is widely used in mold manufacturing, parts processing and other fields, and has the advantages of high processing accuracy, good surface quality and the ability to process complex contours.

[0003] When performing high-precision machining, wire EDM equipment requires the workpiece to be stably fixed on the machine table to ensure cutting accuracy. Currently, bolts are typically used to lock the workpiece from the middle of the fastening plate, pressing the workpiece on one side and the matching positioning block on the other. In this structure, because the fastening force is mainly concentrated in the middle of the fastening plate, the two ends of the fastening plate cannot receive uniform support and force, resulting in slight warping deformation at both ends. Although this warping is difficult to detect with the naked eye, it will cause uneven force on the workpiece during high-precision machining, causing slight displacement of the contact surface of the workpiece, thus affecting the positioning accuracy and machining stability during wire EDM, and further generating machining errors. At the same time, due to the warping of the fastening plate, the reverse force will also be transmitted to the workpiece and the positioning block, causing local stress concentration on the workpiece and even slight vibration. This deformation and vibration problem caused by the unreasonable force structure directly affects the machining efficiency and final machining quality of the wire EDM equipment.

[0004] In view of this, we propose a wire cutting device for mold steel. Utility Model Content

[0005] The purpose of this utility model is to provide a wire cutting device for mold steel. This wire cutting device for mold steel solves the problem that the existing wire cutting device, which uses a central bolt to press the fastening plate, is prone to warping at both ends of the fastening plate, thus causing uneven stress on the workpiece.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A wire cutting device for mold steel includes a machine body with a platform on the machine body. A clamping mechanism is provided on the platform, the clamping mechanism including a clamping table, the clamping table being fixedly connected to the platform by bolts, a fixing screw being fixedly connected to the top of the clamping table, a fastener being threaded onto the fixing screw, the fixing screw penetrating a U-shaped plate, a guide rod being slidably connected to the inner wall of the U-shaped plate, a rigid plate being fixedly connected to the bottom of the guide rod, a positioning screw being threaded onto the inner wall of the U-shaped plate, and both sides of the U-shaped plate protruding downwards.

[0008] Preferably, the machine tool is equipped with a protective cover for protection during the processing.

[0009] Preferably, the U-shaped plate has a through hole in the middle, and the rigid plate has two through holes.

[0010] Preferably, a turntable is provided on the top of the positioning screw to facilitate manual rotation of the positioning screw.

[0011] Preferably, the fastener includes an inner threaded sleeve threadedly connected to a fixed screw. An outer ring is rotatably connected to the outer wall of the inner threaded sleeve. A pressure screw is threadedly connected to the inner wall of the outer ring. A pressure rod is slidably connected to the inner wall of the pressure screw. A pressure spring is provided on the inner wall of the pressure screw. One end of the pressure spring is fixedly connected to the inner wall of the pressure screw, and the other end of the pressure spring is fixedly connected to the pressure rod. A triangular prism is fixedly connected to the outer wall of the pressure rod. A triangular groove is provided on the outer wall of the inner threaded sleeve for inserting the triangular prism.

[0012] Preferably, the pressure screw has markings, and the outer wall of the outer ring has graduations.

[0013] Preferably, the pressure screw has an internal hexagonal groove for being rotated by an internal hexagonal wrench.

[0014] By employing the above technical solution, this utility model provides a wire cutting device for mold steel. It possesses at least the following beneficial effects:

[0015] 1. This utility model incorporates a clamping mechanism. Rotating the fastener causes the U-shaped plate to move downwards, and the protrusions on both sides of the bottom of the U-shaped plate press against both sides of the rigid plate, thus pressing the workpiece. The downward-protruding structure on both sides of the U-shaped plate ensures that when the fastener is rotated, the pressure is applied evenly and symmetrically to both ends of the rigid plate through the protrusions on both sides of the U-shaped plate. This "distributed edge pressure" suppresses deformation and warping of the rigid plate during the pressing process, effectively solving the deformation problem caused by uneven force in traditional structures.

[0016] 2. By setting a fastener, when the pressing force exceeds the set value, the pressure spring is compressed by the reaction force. At this time, the pressure rod and the triangular prism move towards the pressure screw. The triangular prism can no longer drive the inner threaded sleeve to rotate, thus automatically cutting off the transmission link for further pressurization. This avoids damage to the fastening structure, indentation on the workpiece surface, or fatigue of equipment parts caused by the continued increase in fastening force, and improves the safety of operation.

[0017] 3. This utility model incorporates fasteners. As the pressure screw rotates, the relative distance between the pressure screw and the pressure rod changes, causing the spring force of the pressure spring to change. Simultaneously, the marker point moves within the scale range. By observing the position of the marker point relative to the scale, the operator can accurately control the clamping force each time, ensuring consistent clamping force over multiple uses. Especially in batch processing or when repeated clamping is required, it can quickly restore the same clamping state, avoiding unstable clamping or over-clamping due to human judgment errors, thereby improving processing consistency and repeatability accuracy. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of the present invention, form part of this application:

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the machine tool in this utility model;

[0021] Figure 3 This is a schematic diagram of the clamping platform in this utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the fixing screw in this utility model;

[0023] Figure 5 This is a schematic diagram of the fastener structure in this utility model;

[0024] Figure 6 This is a cross-sectional structural diagram of the outer ring component in this utility model;

[0025] Figure 7 This is a cross-sectional structural diagram of the pressure screw in this utility model.

[0026] In the diagram: 1. Machine body; 2. Machine platform; 3. Protective cover; 4. Clamping mechanism; 41. Clamping table; 42. Fixing screw; 43. Fastener; 431. Inner threaded sleeve; 432. Outer ring; 433. Pressure screw; 434. Pressure rod; 435. Pressure spring; 436. Triangular prism; 437. Marker point; 438. Scale; 44. U-shaped plate; 45. Guide rod; 46. Rigid plate; 47. Positioning screw. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figure 1 - Figure 7 As shown, this utility model provides a technical solution: a wire cutting device for mold steel, including a machine body 1. The machine body 1 is a wire cutting device for mold steel. A machine platform 2 is provided on the machine body 1, and a clamping mechanism 4 is provided on the machine platform 2. The clamping mechanism 4 includes a clamping table 41, which is fixedly connected to the machine platform 2 by bolts. A fixing screw 42 is fixedly connected to the top of the clamping table 41, and a fastener 43 is threaded onto the fixing screw 42. The fixing screw 42 passes through a U-shaped plate 44, and slides along the inner wall of the U-shaped plate 44. A guide rod 45 is dynamically connected, and a rigid plate 46 is fixedly connected to the bottom of the guide rod 45. A positioning screw 47 is threaded onto the inner wall of the U-shaped plate 44. Both sides of the U-shaped plate 44 protrude downwards. When it is necessary to press the workpiece, rotate the positioning screw 47 to a suitable height so that the positioning screw 47 at the bottom of the U-shaped plate 44 is flush with the workpiece. At this time, rotate the fastener 43 to drive the U-shaped plate 44 downwards. The two protrusions on the bottom of the U-shaped plate 44 press against the two sides of the rigid plate 46, so that the rigid plate 46 presses against the workpiece. The clamping method involves applying a downward clamping force to the middle of the fastening plate, causing one side of the fastening plate to clamp the workpiece and the other side to clamp the matching block. However, because the pressure is concentrated in the middle, the two ends of the fastening plate cannot obtain sufficient downward support, easily resulting in the two ends warping upwards. From a mechanical point of view, this is a typical case of "plate warping caused by concentrated load," where downward pressure in the middle causes the two sides to lift. This warping leads to uneven pressure distribution, unbalanced force on the workpiece, and causes inaccurate positioning and machining errors. In this application, the downward convex structure design of the U-shaped plate 44 on both sides makes... When the fastener 43 is rotated, the pressure is not concentrated on the middle of the rigid plate 46, but is applied evenly and symmetrically to both ends of the rigid plate 46 through the protrusions on both sides of the U-shaped plate 44. This "distributed edge pressure" structure can be compared to the beam support state with two points pressing down at the same time. It can better suppress the deformation and warping of the rigid plate 46 during the pressing process, effectively solve the deformation problem caused by uneven force in the traditional structure, and keep the workpiece in a stable fit during the processing, thereby improving the accuracy and reliability of wire EDM.

[0029] The machine base 2 is equipped with a protective cover 3 for protection during the processing. A through hole is opened in the middle of the U-shaped plate 44. Two through holes are opened on the rigid plate 46, which are for the fixing screw 42 and the positioning screw 47 to pass through. A turntable is set on the top of the positioning screw 47 for easy manual rotation of the positioning screw 47.

[0030] Fastener 43 includes an inner threaded sleeve 431, which is threadedly connected to a fixed screw 42. An outer ring 432 is rotatably connected to the outer wall of the inner threaded sleeve 431. A pressure screw 433 is threadedly connected to the inner wall of the outer ring 432. A pressure rod 434 is slidably connected to the inner wall of the pressure screw 433. A pressure spring 435 is provided on the inner wall of the pressure screw 433. One end of the pressure spring 435 is fixedly connected to the inner wall of the pressure screw 433, and the other end is fixedly connected to the pressure rod 434. A triangular prism is fixedly connected to the outer wall of the pressure rod 434. 436. The outer wall of the inner threaded sleeve 431 has a triangular groove for inserting the triangular prism 436. When the outer ring 432 is rotated, the outer ring 432 drives the triangular prism 436 through the pressure screw 433 and pressure rod 434. Under the action of the pressure spring 435, the triangular prism 436 abuts against the triangular groove on the inner threaded sleeve 431. At this time, the triangular prism 436 drives the inner threaded sleeve 431 to rotate, causing the inner threaded sleeve 431 to rotate on the fixed screw 42 and press down on the U-shaped plate 44 until the pressing force exceeds the set value. At this time, the reaction force on the pressure spring 435 causes the pressure spring to... When 435 is compressed, the pressure rod 434 and the triangular prism 436 move towards the pressure screw 433. At this point, the triangular prism 436 can no longer drive the inner threaded sleeve 431 to rotate, thus automatically cutting off the transmission link for further pressurization. This avoids damage to the fastening structure, indentation on the workpiece surface, or fatigue of equipment components caused by the continued increase in tightening force, improving operational safety. The pressure screw 433 has a marking point 437, and the outer wall of the outer ring 432 has a scale 438. As the pressure screw 433 rotates, the relative distance between the pressure screw 433 and the pressure rod 434 changes. At this time, the elastic force of the pressure spring 435 changes, and the mark point 437 moves within the range of the scale 438. By observing the position of the mark point 437 relative to the scale 438, the operator can accurately control the clamping force each time, ensuring that the clamping force remains consistent when used multiple times. Especially in batch processing or when repeated clamping is required, it can quickly restore the same clamping state, avoiding unstable clamping or over-clamping due to human judgment error, thereby improving the consistency and repeatability of processing. The pressure screw 433 is provided with an internal hexagonal groove for the pressure screw 433 to be rotated by the internal hexagonal wrench.

[0031] In the wire cutting equipment for mold steel according to this utility model, when it is necessary to press the workpiece, the positioning screw 47 is rotated to a suitable height so that the positioning screw 47 located at the bottom of the U-shaped plate 44 is flush with the workpiece. At this time, the fastener 43 is rotated to drive the U-shaped plate 44 downward. The two protrusions on both sides of the bottom of the U-shaped plate 44 press against the two sides of the rigid plate 46, so that the rigid plate 46 presses against the workpiece. The traditional central pressing method applies a downward pressing force to the middle of the fastening plate, so that one side of the fastening plate presses against the workpiece and the other side presses against the matching block. However, because the pressure is concentrated in the middle, the two ends of the fastening plate cannot obtain sufficient downward support, and the two ends are prone to warping upward. From a mechanical point of view, this is a typical "plate warping caused by concentrated load". In other words, the downward pressure in the middle causes the sides to lift, resulting in uneven pressure distribution, workpiece stress imbalance, inaccurate positioning, and processing errors. In this application, the downward convex structure design of the U-shaped plate 44 on both sides ensures that when the fastener 43 is rotated, the pressure is not concentrated on the middle of the rigid plate 46, but is applied evenly and symmetrically to both ends of the rigid plate 46 through the convex parts on both sides of the U-shaped plate 44. This "distributed edge pressure" structure can be compared to the beam support state with simultaneous pressure from two points, which can better suppress the deformation and warping of the rigid plate 46 during the pressing process, effectively solving the deformation problem caused by uneven force in traditional structures, and ensuring that the workpiece always maintains a stable fit during processing, thereby improving the accuracy and reliability of wire EDM processing.

[0032] When the outer ring 432 is rotated, it drives the triangular prism 436 via the pressure screw 433 and pressure rod 434. Under the action of the pressure spring 435, the triangular prism 436 abuts against the triangular groove on the inner thread sleeve 431. At this time, the triangular prism 436 drives the inner thread sleeve 431 to rotate, causing the inner thread sleeve 431 to rotate on the fixed screw 42 and press down on the U-shaped plate 44 until the pressing force exceeds the set value. At this time, the reaction force on the pressure spring 435 causes the pressure spring 435 to be compressed. At this time, the pressure rod 434 and triangular prism 436 move towards the pressure screw 433. At this time, the triangular prism 436 can no longer drive the inner thread sleeve 431 to rotate, thus automatically cutting off the transmission link for further pressurization. This avoids damage to the fastening structure, indentation on the workpiece surface, or fatigue of equipment parts caused by the continued increase in tightening force, and improves the safety of operation.

[0033] As the pressure screw 433 rotates, the relative distance between the pressure screw 433 and the pressure rod 434 changes. At this time, the elastic force of the pressure spring 435 changes, and the marker point 437 moves within the range of the scale 438. By observing the position of the marker point 437 relative to the scale 438, the operator can accurately control the clamping force each time, ensuring that the clamping force remains consistent when used multiple times. Especially in batch processing or when repeated clamping is required, it can quickly restore the same clamping state, avoiding unstable clamping or over-clamping due to human judgment error, thereby improving the consistency and repeatability of processing.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wire cutting apparatus of a die steel comprising a machine body (1), characterized in that: The machine body (1) is provided with a machine table (2), the machine table (2) is provided with a clamping mechanism (4), the clamping mechanism (4) comprises: The clamping table (41) is fixedly connected on the machine table (2) by bolts, the top of the clamping table (41) is fixedly connected with a fixed screw rod (42), the fixed screw rod (42) is threadedly connected with a fastener (43), the fixed screw rod (42) penetrates through a U-shaped plate (44), the inner wall of the U-shaped plate (44) is slidably connected with a guide rod (45), the bottom of the guide rod (45) is fixedly connected with a hard plate (46), the inner wall of the U-shaped plate (44) is threadedly connected with a positioning screw rod (47), and the two sides of the U-shaped plate (44) are downwardly protruded.

2. A wire saw apparatus for die steel as recited in claim 1, characterized by: The machine table (2) is provided with a protective cover (3) for protection during processing.

3. A wire saw apparatus for die steel as recited in claim 1, characterized by: The middle part of the U-shaped plate (44) is provided with a through hole, and the hard plate (46) is provided with two through holes.

4. The wire saw apparatus for die steel according to claim 1, wherein: The top of the positioning screw rod (47) is provided with a rotating disc for conveniently rotating the positioning screw rod (47) manually.

5. The wire saw apparatus for die steel according to claim 1, wherein: The fastener (43) comprises an internal thread sleeve (431), the internal thread sleeve (431) is threadedly connected with the fixed screw rod (42), the outer wall of the internal thread sleeve (431) is rotatably connected with an outer ring (432), the inner wall of the outer ring (432) is threadedly connected with a pressure screw rod (433), the inner wall of the pressure screw rod (433) is slidably connected with a pressure rod (434), the inner wall of the pressure screw rod (433) is provided with a pressure spring (435), one end of the pressure spring (435) is fixedly connected with the inner wall of the pressure screw rod (433), the other end of the pressure spring (435) is fixedly connected with the pressure rod (434), the outer wall of the pressure rod (434) is fixedly connected with a triangular prism (436), and the outer wall of the internal thread sleeve (431) is provided with a triangular groove for inserting the triangular prism (436).

6. A wire saw apparatus for die steel as defined in claim 5 wherein: The pressure screw rod (433) is provided with a mark point (437), and the outer wall of the outer ring (432) is provided with a scale (438).

7. A wire saw apparatus for a die steel as defined in claim 6, wherein: The pressure screw rod (433) is provided with an internal hexagonal groove, and the pressure screw rod (433) is rotated by an internal hexagonal wrench.

Images