Large machining positioning device for die steel

Abstract

The utility model relates to the technical field of die steel, in particular to a large-scale die steel machining positioning device which comprises a die steel machining center, and a clamp table is arranged in the die steel machining center. The clamping device further comprises a positioning assembly which is used for being stably fixed when die steel of different sizes is machined, the two sets of symmetrically-arranged positioning plates are connected through high-strength limiting rods, and continuous and even clamping force can be provided when the positioning plates make contact with the die steel. When die steel of different sizes is machined, the positioning plate can automatically adjust the clamping position according to the appearance of a workpiece, the compression amount of the spring changes accordingly, enough clamping force is guaranteed, and the phenomenon that the workpiece is damaged due to overload is avoided. In the whole positioning process, through the synergistic effect of the precise gear transmission system and the rigid guide mechanism, it is ensured that the four positioning plates synchronously get close to or away from the center, and precise centering positioning of the die steel in the X direction and the Y direction in the horizontal plane is achieved.

Description

Technical Field

[0001] This utility model relates to the field of mold steel technology, specifically to a large-scale processing and positioning device for mold steel. Background Technology

[0002] A mold steel machining positioning device is a mechanical device used to precisely fix mold steel workpieces on CNC machining centers, milling machines, or lathes. It typically consists of a positioning table, fixtures, and adjustable clamping mechanisms, and can adapt to mold steel of different sizes and shapes, ensuring that the workpiece is stably and centrally fixed during machining, avoiding machining errors caused by vibration or uneven stress.

[0003] The operating steps of the mold steel machining positioning device can be summarized as follows: First, select a suitable positioning reference according to the machining requirements and clean the contact surface between the workpiece and the device; then, adjust and fix the position of the positioning elements to ensure accurate workpiece positioning and uniform clamping force; periodically check the positioning stability during machining to prevent displacement; after completion, release the device, remove the workpiece, and clean and maintain it for future use. This device achieves high-precision repeatable positioning by restricting degrees of freedom, improving machining efficiency and quality. However, when machining mold steel in existing machining centers, the model or size of the fixture needs to be frequently adjusted due to the different sizes of the mold steel. Furthermore, the mold steel is relatively large, and when fixed by a single person, the four corners of the mold steel need to be adjusted separately, which is very inconvenient for single-person operation.

[0004] In view of this, we propose a large-scale machining and positioning device for mold steel. Utility Model Content

[0005] The purpose of this utility model is to provide a large-scale machining and positioning device for mold steel. This device solves the problems that single-person operation is not convenient and the fixtures are not suitable for mold steel of various sizes when positioning mold steel.

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

[0007] A large-scale machining and positioning device for mold steel includes a mold steel machining center with a fixture table inside; it also includes a positioning component for stably fixing mold steel of different sizes during machining, ensuring that the mold steel is centered on the fixture table; the positioning component includes a positioning platform, the bottom surface of which is fixedly connected to the top surface of the fixture table, a movable groove on the surface of the positioning platform, a T-shaped rail slidably connected to the inner side of the movable groove, a limit groove on the inner side of the T-shaped rail, a slider slidably connected to the inner side of the limit groove, and a positioning plate fixedly connected to the top surface of the slider; the number of positioning plates is two sets, and the two sets of positioning plates are symmetrically arranged about the center line of the T-shaped rail.

[0008] Preferably, a limiting rod extends through the surface of the positioning plate, the limiting rod is slidably connected to the positioning plate, and a spring is sleeved on the outer side of the limiting rod, with the two ends of the spring respectively fixedly connected to the surfaces of the two sets of positioning plates.

[0009] Preferably, a large gear is provided on the inner side of the positioning platform, and a moving groove is formed on the surface of the large gear.

[0010] Preferably, a lever is fixedly connected to the bottom surface of the T-shaped rail, the lever passes through the positioning platform and is slidably connected, and the bottom end of the lever is inserted into the inner side of the actuation groove.

[0011] Preferably, a small gear is provided on the inner side of the positioning platform, and the small gear meshes with the large gear.

[0012] Preferably, a rotating shaft is rotatably connected through the inner side of the positioning platform. A knob is fixedly connected to one end of the rotating shaft located on the outer side of the positioning platform. A bevel gear one is fixedly connected to one end of the rotating shaft located on the inner side of the positioning platform. A bevel gear two is fixedly connected to the bottom surface of the small gear. The bevel gear two meshes with the bevel gear one.

[0013] Preferably, there are two sets of T-shaped rails, and the two sets of T-shaped rails are symmetrically arranged with the center line of the positioning platform as the axis of symmetry, and two sets of positioning plates are provided above each set of T-shaped rails.

[0014] By employing the above technical solution, this utility model provides a large-scale machining and positioning device for mold steel. It possesses at least the following beneficial effects:

[0015] 1. This utility model uses two sets of symmetrically arranged positioning plates connected by high-strength limiting rods to provide a continuous and uniform clamping force when the positioning plates contact the mold steel. When machining mold steel of different sizes, the positioning plates automatically adjust their clamping positions according to the workpiece shape, and the spring compression changes accordingly, ensuring sufficient clamping force while avoiding overload damage to the workpiece. Throughout the positioning process, the coordinated action of the precision gear transmission system and the rigid guide mechanism ensures that the four positioning plates move towards or away from the center synchronously, achieving precise centering and positioning of the mold steel in the X and Y directions in the horizontal plane.

[0016] 2. This invention prevents positioning loosening by utilizing the self-locking characteristic of bevel gear transmission; secondly, it maintains a constant clamping force using the preload of a spring, ensuring positioning stability even under processing vibration environments. The entire positioning process requires only one person to operate, and the entire process from workpiece placement to precise positioning can be completed in a short time, significantly improving the positioning efficiency and accuracy of mold steel processing. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of the present invention, form part of this application:

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is an enlarged structural diagram of the fixture platform in this utility model;

[0020] Figure 3 This is a schematic diagram of the unfolded cross-sectional structure of the positioning platform in this utility model;

[0021] Figure 4 This is an enlarged cross-sectional view of the positioning platform in this utility model;

[0022] Figure 5 This is an enlarged schematic diagram of the T-shaped rail structure in this utility model.

[0023] In the diagram: 1. Mold steel machining center; 2. Positioning assembly; 21. Positioning table; 22. T-rail; 23. Toggle lever; 24. Limiting groove; 25. Slider; 26. Positioning plate; 27. Limiting rod; 28. Movable groove; 29. ​​Large gear; 210. Toggle groove; 211. Small gear; 212. Bevel gear II; 213. Rotating shaft; 214. Bevel gear I; 215. Knob; 216. Spring; 3. Fixture table. Detailed Implementation

[0024] 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.

[0025] A large machining and positioning device for mold steel, such as Figure 1 - Figure 5As shown, the device includes a mold steel machining center 1, which has a fixture table 3 inside; it also includes a positioning component 2, which can stably fix mold steel of different sizes during machining and ensure that the mold steel is centered on the fixture table 3; the positioning component 2 includes a positioning platform 21, the bottom surface of which is fixedly connected to the top surface of the fixture table 3, the surface of which has a movable groove 28, the inner side of which is slidably connected to a T-shaped rail 22, the inner side of which has a limit groove 24, the inner side of which is slidably connected to a slider 25, the top surface of which is fixedly connected to a positioning plate 26, and there are two sets of positioning plates 26, which are symmetrically arranged about the center line of the T-shaped rail 22. A limiting rod 27 extends through the surface of the positioning plate 26. The limiting rod 27 is slidably connected to the positioning plate 26. A spring 216 is sleeved on the outer side of the limiting rod 27. When machining mold steel of different sizes, the positioning plate 26 automatically adjusts its clamping position according to the shape of the workpiece, and the compression of the spring 216 changes accordingly, ensuring sufficient clamping force while avoiding overload damage to the workpiece. Throughout the positioning process, the coordinated action of the precision gear transmission system and the rigid guide mechanism ensures that the four positioning plates 26 move towards or away from the center synchronously, achieving precise centering and positioning of the mold steel in the X and Y directions in the horizontal plane. The two ends of the spring 216 are fixedly connected to the surfaces of the two sets of positioning plates 26, respectively. A large gear 29 is provided on the inner side of the positioning platform 21. The surface of the large gear 29 has actuation grooves 210. These grooves, evenly distributed around the circumference of the large gear 29, and a lever 23 fixed to the bottom of the T-shaped rail 22 form a cam-follower mechanism, converting the rotational motion of the large gear 29 into linear reciprocating motion of the two symmetrically arranged T-shaped rails 22 within the movable groove 28. A lever 23 is fixedly connected to the bottom surface of the T-shaped rail 22, passing through the positioning platform 21 and slidably connected. The bottom end of the lever 23 is inserted into the inner side of the actuation groove 210. A small gear 211 is provided on the inner side of the positioning platform 21, meshing with the large gear 29. A rotating shaft 213 is rotatably connected through the inner side of the positioning platform 21. A knob 215 is fixedly connected to one end of the rotating shaft 213 on the outer side of the positioning platform 21, and a bevel gear 214 is fixedly connected to the other end of the rotating shaft 213 on the inner side of the positioning platform 21. Rotating the knob 215 on the outer side of the positioning platform 21 causes the rotating shaft 213 to rotate synchronously. The end of the rotating shaft 213 on the inner side of the positioning platform 21 forms a 90-degree meshing transmission with a bevel gear 212 through a precision-machined bevel gear 214, converting the rotational motion into vertical power transmission. The bottom surface of the pinion 211 is fixedly connected to the bevel gear 212, which meshes with the bevel gear 214. There are two sets of T-shaped rails 22, and the two sets of T-shaped rails 22 are symmetrically arranged about the center line of the positioning platform 21. Each set of T-shaped rails 22 has two sets of positioning plates 26 above it.

[0026] In use, the large-scale machining and positioning device for mold steel of this utility model first places the mold steel to be processed horizontally on the positioning table 21 of the fixture table 3. The operator rotates the knob 215 located on the outside of the positioning table 21 clockwise or counterclockwise, which drives the rotating shaft 213 fixedly connected to it to rotate synchronously. One end of the rotating shaft 213 inside the positioning table 21 forms a 90-degree meshing transmission with a precision-machined bevel gear 214 and a bevel gear 212, converting the rotational motion into vertical power transmission. The bevel gear 212 and the pinion 211 adopt an integrated design to ensure transmission accuracy. The pinion 211 and the larger diameter gear 29 form a reduction gear pair, which increases the output torque and improves the accuracy of motion control. The actuating grooves 210 evenly distributed along the circumference of the surface of the large gear 29 and the lever 23 fixed to the bottom of the T-shaped rail 22 form a cam-follower mechanism, which converts the rotational motion of the large gear 29 into linear reciprocating motion of the two sets of symmetrically arranged T-shaped rails 22 in the movable groove 28. The T-shaped rail 22 is made of high-strength alloy steel. Its inner precision-machined limiting groove 24 forms a high-precision sliding pair with the slider 25, ensuring that the movement trajectory of the positioning plate 26 remains strictly linear. Two sets of symmetrically arranged positioning plates 26 are connected by high-strength limiting rods 27. The pre-compressed springs 216 on the limiting rods 27 undergo a special heat treatment process, possessing a stable elastic coefficient, and providing continuous and uniform clamping force when the positioning plates 26 contact the mold steel. When machining mold steel of different sizes, the positioning plates 26 automatically adjust their clamping positions according to the workpiece shape, and the compression of the springs 216 changes accordingly, ensuring sufficient clamping force while avoiding overload damage to the workpiece. Throughout the positioning process, the coordinated action of the precision gear transmission system and the rigid guide mechanism ensures that the four positioning plates 26 synchronously move towards or away from the center, achieving precise centering and positioning of the mold steel in the X and Y directions in the horizontal plane. After positioning, the central axis of the mold steel strictly coincides with the spindle axis of the machining center, laying the foundation for subsequent high-precision machining processes. This device features a dual safety mechanism: first, the self-locking characteristic of the bevel gear transmission prevents loosening of the positioning; second, the preload of spring 216 maintains a constant clamping force, ensuring positioning stability even under vibration during processing. The entire positioning process requires only one person to operate, completing the entire process from workpiece placement to precise positioning in a short time, significantly improving the positioning efficiency and accuracy of mold steel processing.

[0027] 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 a process, method, article, or apparatus.

[0028] 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 large-scale machining and positioning device for mold steel, comprising a mold steel machining center (1), characterized in that: The mold steel machining center (1) is equipped with a fixture table (3) inside. It also includes a positioning component (2), which can be stably fixed when processing mold steel of different sizes, and ensure that the mold steel can be centered on the center of the fixture table (3); The positioning component (2) includes a positioning platform (21), the bottom surface of which is fixedly connected to the top surface of the fixture platform (3). The surface of the positioning platform (21) is provided with a movable groove (28). A T-shaped rail (22) is slidably connected to the inner side of the movable groove (28). A limiting groove (24) is provided on the inner side of the T-shaped rail (22). A slider (25) is slidably connected to the inner side of the limiting groove (24). A positioning plate (26) is fixedly connected to the top surface of the slider (25). There are two sets of positioning plates (26), and the two sets of positioning plates (26) are symmetrically arranged with the center line of the T-shaped rail (22) as the axis of symmetry.

2. The large-scale machining and positioning device for mold steel according to claim 1, characterized in that: The surface of the positioning plate (26) is penetrated by a limiting rod (27), the limiting rod (27) is slidably connected to the positioning plate (26), and a spring (216) is sleeved on the outside of the limiting rod (27). The two ends of the spring (216) are respectively fixedly connected to the surfaces of the two sets of positioning plates (26).

3. The large-scale machining and positioning device for mold steel according to claim 1, characterized in that: The positioning platform (21) is provided with a large gear (29) on its inner side, and the surface of the large gear (29) is provided with a moving groove (210).

4. The large-scale machining and positioning device for mold steel according to claim 1, characterized in that: The bottom surface of the T-shaped rail (22) is fixedly connected to a lever (23), which passes through the positioning platform (21) and is slidably connected. The bottom end of the lever (23) is inserted into the inner side of the actuation groove (210).

5. A large-scale machining and positioning device for mold steel according to claim 4, characterized in that: The positioning platform (21) is provided with a small gear (211) on its inner side, and the small gear (211) meshes with the large gear (29).

6. A large-scale machining and positioning device for mold steel according to claim 5, characterized in that: A rotating shaft (213) is rotatably connected through the inner side of the positioning platform (21). A knob (215) is fixedly connected to one end of the rotating shaft (213) located outside the positioning platform (21). A bevel gear (214) is fixedly connected to one end of the rotating shaft (213) located inside the positioning platform (21). A bevel gear (212) is fixedly connected to the bottom surface of the pinion (211). The bevel gear (212) meshes with the bevel gear (214).

7. A large-scale machining and positioning device for mold steel according to claim 1, characterized in that: The number of T-shaped rails (22) is two sets, and the two sets of T-shaped rails (22) are symmetrically arranged with the center line of the positioning platform (21) as the axis of symmetry. Each set of T-shaped rails (22) is provided with two sets of positioning plates (26) above it.

Images