Machining tool for mold milling

Abstract

The invention relates to the technical field of mold milling machining tools, in particular to a machining tool for mold milling, which comprises a bearing shell and a clamping mechanism, the clamping mechanism comprises a clamping assembly, two positioning and fixing assemblies, two transmission assemblies and a synchronous assembly, the clamping assembly comprises a first two-way threaded rod rotationally connected to the inner wall of the bearing shell through a bearing, and the side end of the first two-way threaded rod is rotationally connected to the side wall of the bearing shell through a bearing in a penetrating mode. The distance between the two clamping plates can be rapidly adjusted through the arranged clamping assembly, preliminary clamping of dies of different sizes is achieved, the positions of the positioning clamping plates can be rapidly and accurately adjusted through the arranged positioning and fixing assembly according to the sizes of the dies, it is ensured that the dies cannot displace or deform in the machining process, and the machining efficiency is improved. Therefore, not only is the machining precision of the die improved, but also the application range of the tool is widened.

Description

Technical Field

[0001] This invention relates to the field of tooling technology for mold milling, and more specifically to a tooling for mold milling. Background Technology

[0002] Mold milling fixtures are essentially auxiliary equipment used in the mold milling process to achieve precise positioning and reliable clamping of mold workpieces, ensuring stable operation of milling cutters. Common fixtures include vises, clamping plates, indexing heads, and special fixtures designed for specific molds. Application areas include the automotive manufacturing industry, electronic equipment manufacturing industry, and aerospace industry. As a basic process equipment in industrial production, the precision of molds directly determines the quality of products. Fixtures, through precise positioning and reliable clamping, reduce the displacement and vibration of molds during the milling process, ensuring the relative positional accuracy between the milling cutter and the mold, thereby producing high-precision molds that meet the manufacturing requirements of various products.

[0003] The uneven distribution of clamping force in some existing tooling fixtures causes displacement or deformation of the mold during processing, affecting processing accuracy. At the same time, some tooling fixtures have poor versatility and can only be used for molds of specific types and sizes, limiting their application range. In addition, some tooling fixtures are difficult to position and adjust, and are cumbersome to operate, reducing production efficiency and failing to meet the demands of modern manufacturing for efficient and high-quality production. Corresponding solutions are needed. Summary of the Invention

[0004] In view of the above-mentioned shortcomings of the prior art, the present invention provides a machining fixture for mold milling, which can effectively solve the problems of uneven clamping force distribution, poor versatility and difficulty in positioning adjustment in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] This invention provides a machining fixture for mold milling, including a support housing;

[0007] The clamping mechanism includes a clamping assembly, two positioning and fixing assemblies, two transmission assemblies, and a synchronization assembly. The clamping assembly includes a first bidirectional threaded rod rotatably connected to the inner wall of the bearing housing via bearings. The side end of the first bidirectional threaded rod is rotatably connected to the side wall of the bearing housing via bearings. Nuts are threadedly connected to the opposite thread sections of the first bidirectional threaded rod. The upper surface of the bearing housing is provided with two first limiting grooves. A first limiting rod is slidably connected in each of the two first limiting grooves. The bottom ends of the two first limiting rods are fixedly connected to the upper surfaces of the two first nuts, respectively. Two bearing plates are fixedly connected to the upper surface of the bearing housing. Connecting rods are fixedly connected to the side walls of the two first limiting rods that are close to each other. The two connecting rods are slidably connected to the side walls of the two bearing plates, respectively. Clamping plates are fixedly connected to the ends of the two connecting rods that are close to each other.

[0008] According to the above-mentioned machining fixture for mold milling, the positioning and fixing assembly includes two fixing plates fixedly connected to the side wall of the clamping plate near the bearing plate. A second bidirectional threaded rod is provided above the bearing housing. The second bidirectional threaded rod is rotatably connected to the side wall of the two fixing plates through a bearing. A second limiting groove is provided on the side wall of the clamping plate. Two second limiting rods are slidably connected in the second limiting groove. A second nut is threadedly connected to the threaded sections of the second bidirectional threaded rod with opposite thread directions. The ends of the two second limiting rods near the second bidirectional threaded rod are respectively fixedly connected to the side walls of the two second nuts. Positioning clamps are fixedly connected to the ends of the two second limiting rods away from the second bidirectional threaded rod. The side walls of the two positioning clamps are in contact with the side wall of the clamping plate.

[0009] According to the above-mentioned machining fixture for mold milling, the transmission assembly includes a first mounting plate fixedly connected to the side wall of the clamping plate near the bearing plate, a first rotating shaft provided below the second bidirectional threaded rod, the first rotating shaft being rotatably connected to the upper surface of the first mounting plate through a bearing, a first bevel gear fixedly connected circumferentially to the second bidirectional threaded rod, a second bevel gear fixedly connected to the top of the first rotating shaft, the first bevel gear meshing with the second bevel gear, a third limiting groove provided on the upper surface of the bearing housing, a second mounting plate slidably connected within the third limiting groove, the upper surface of the second mounting plate being fixedly connected to the bottom surface of the clamping plate, a third bevel gear fixedly connected circumferentially to the first rotating shaft, a fourth bevel gear provided on the side of the first rotating shaft, the third bevel gear meshing with the fourth bevel gear.

[0010] According to the above-mentioned machining fixture for mold milling, the synchronization component includes a slide rod disposed in a bearing housing, a sleeve slidably sleeved on the slide rod, two No. 4 limiting grooves are opened on the side wall of the sleeve, and limiting blocks are slidably connected in both No. 4 limiting grooves. Both limiting blocks are fixedly connected to the side wall of the slide rod. The slide rod and the sleeve are respectively rotatably connected to the side walls of two No. 2 mounting plates through bearings.

[0011] According to the above-mentioned machining fixture for mold milling, the sliding rod and the sleeve are respectively fixedly connected to the side walls of two No. 4 bevel gears at opposite ends.

[0012] According to the above-mentioned machining fixture for mold milling, the bottom surfaces of the two clamping plates and the plurality of positioning clamping plates are all in contact with the upper surface of the bearing housing.

[0013] According to the above-mentioned machining fixture for mold milling, the synchronization component is located inside the bearing housing, and the two limiting blocks are respectively located on both sides of the slide rod.

[0014] According to the above-mentioned machining fixture for mold milling, the two bearing plates and the clamping plate are arranged in parallel, and the two positioning clamping plates in the positioning and fixing assembly are arranged in parallel.

[0015] The technical solution provided by this invention has the following advantages compared with the known prior art:

[0016] 1. The present invention, through its clamping components, can quickly adjust the distance between two clamping plates to achieve initial clamping of molds of different sizes, significantly shortening clamping time and improving processing efficiency. At the same time, the connection between the first limiting rod and the connecting rod, as well as the sliding design of the connecting rod on the bearing plate, ensures the stability of the clamping plates during movement, providing a guarantee for the precise clamping of the mold, greatly reducing processing errors caused by unstable clamping, and improving the processing accuracy of the mold.

[0017] 2. The present invention, through its positioning and fixing components, can precisely adjust the position of the positioning clamping plate according to the size of the mold, ensuring that the mold will not shift or deform during processing. This not only improves the processing accuracy of the mold, but also broadens the application range of the tooling, enabling the tooling to meet the processing needs of molds with various complex shapes and sizes. At the same time, the design of the positioning clamping plate fitting snugly with the clamping plate further enhances the stability of clamping, reduces vibration during processing, and provides a reliable guarantee for high-quality milling processing.

[0018] 3. The present invention, through the transmission component, can achieve efficient power transmission, greatly reducing the labor intensity of operators, and can ensure the stable rotation of the two No. 2 bidirectional threaded rods, thereby realizing the precise movement of the positioning clamp and improving the accuracy and stability of positioning and fixing.

[0019] 4. The present invention, through the setting of the synchronization component, can ensure that the two transmission components work synchronously, and that the positioning clamping plates on the two clamping plates move synchronously, thereby ensuring that the clamping force and positioning force on both sides of the mold are uniform and consistent, effectively avoiding mold displacement or deformation caused by uneven clamping force, greatly improving the accuracy of clamping and positioning, and ensuring the consistency and stability of mold processing. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention;

[0022] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 3 This is a three-dimensional structural schematic diagram from another perspective of the present invention;

[0024] Figure 4 for Figure 1 Enlarged view of point A in the middle;

[0025] Figure 5 for Figure 2 Enlarged view of point B in the middle;

[0026] Figure 6 for Figure 3 A magnified view of point C in the middle.

[0027] Reference numerals: 1. Bearing housing; 2. Clamping assembly; 21. First bidirectional threaded rod; 22. First nut; 23. First limiting groove; 24. First limiting rod; 25. Bearing plate; 26. Connecting rod; 27. Clamping plate; 3. Positioning and fixing assembly; 31. Fixing plate; 32. Second bidirectional threaded rod; 33. Second limiting groove; 34. Second limiting rod; 35. Second nut; 36. Positioning clamping plate; 4. Transmission assembly; 41. First mounting plate; 42. First rotating shaft; 43. First bevel gear; 44. Second bevel gear; 45. Third limiting groove; 46. Second mounting plate; 47. Third bevel gear; 48. Fourth bevel gear; 5. Synchronization assembly; 51. Slide rod; 52. Sleeve; 53. Fourth limiting groove; 54. Limiting block. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0029] The present invention will be further described below with reference to embodiments.

[0030] Example: Refer to Figures 1 to 6 A machining fixture for mold milling includes a bearing housing 1 and a clamping mechanism. The clamping mechanism includes a clamping assembly 2, two positioning and fixing assemblies 3, two transmission assemblies 4, and a synchronization assembly 5. The clamping assembly 2 includes a first bidirectional threaded rod 21 rotatably connected to the inner wall of the bearing housing 1 via bearings. The side end of the first bidirectional threaded rod 21 is rotatably connected to the side wall of the bearing housing 1 via bearings. Nuts 22 are threadedly connected to the opposite thread sections of the first bidirectional threaded rod 21. The bearing housing 1... The upper surface is provided with two No. 1 limiting grooves 23, and a No. 1 limiting rod 24 is slidably connected in each of the two No. 1 limiting grooves 23. The bottom ends of the two No. 1 limiting rods 24 are respectively fixedly connected to the upper surfaces of the two No. 1 nuts 22. Two bearing plates 25 are fixedly connected to the upper surface of the bearing housing 1. A connecting rod 26 is fixedly connected to the side wall of the two No. 1 limiting rods 24 that are close to each other. The two connecting rods 26 are respectively slidably connected through the side wall of the two bearing plates 25. A clamping plate 27 is fixedly connected to the end of the two connecting rods 26 that are close to each other.

[0031] The positioning and fixing assembly 3 includes two fixing plates 31 fixedly connected to the side wall of the clamping plate 27 near the bearing plate 25. A second bidirectional threaded rod 32 is provided above the bearing housing 1. The second bidirectional threaded rod 32 is rotatably connected to the side wall of the two fixing plates 31 via bearings. A second limiting groove 33 is provided on the side wall of the clamping plate 27. Two second limiting rods 34 are slidably connected within the second limiting groove 33. Second nuts 35 are threadedly connected to the threaded sections of the second bidirectional threaded rod 32 with opposite thread directions. The two second limiting rods 34 are close to the second bidirectional threaded rod. One end of rod 32 is fixedly connected to the side wall of two second nuts 35 respectively. The two second limit rods 34 are fixedly connected to the end away from the second bidirectional threaded rod 32 with positioning clamps 36. The side walls of the two positioning clamps 36 are in contact with the side wall of the clamping plate 27. The bottom surfaces of the two clamping plates 27 and the multiple positioning clamps 36 are in contact with the upper surface of the bearing housing 1, ensuring that the clamped mold has good stability. The two bearing plates 25 and the clamping plates 27 are arranged in parallel. The two positioning clamps 36 in the positioning and fixing assembly 3 are arranged in parallel.

[0032] The transmission assembly 4 includes a first mounting plate 41 fixedly connected to the side wall of the clamping plate 27 near the bearing plate 25, a first rotating shaft 42 located below the second bidirectional threaded rod 32, the first rotating shaft 42 being rotatably connected to the upper surface of the first mounting plate 41 through a bearing, a first bevel gear 43 being fixedly connected circumferentially to the second bidirectional threaded rod 32, a second bevel gear 44 being fixedly connected to the top of the first rotating shaft 42, the first bevel gear 43 and the second bevel gear 44 meshing, a third limiting groove 45 being opened on the upper surface of the bearing housing 1, a second mounting plate 46 being slidably connected in the third limiting groove 45, the upper surface of the second mounting plate 46 being fixedly connected to the bottom surface of the clamping plate 27, a third bevel gear 47 being fixedly connected circumferentially to the first rotating shaft 42, a fourth bevel gear 48 being located on the side of the first rotating shaft 42, the third bevel gear 47 and the fourth bevel gear 48 meshing;

[0033] The synchronization component 5 includes a slide rod 51 disposed within the bearing housing 1. A sleeve 52 is slidably sleeved on the slide rod 51. Two fourth-order limiting grooves 53 are formed on the side wall of the sleeve 52. Limiting blocks 54 are slidably connected in both fourth-order limiting grooves 53. Both limiting blocks 54 are fixedly connected to the side wall of the slide rod 51. The slide rod 51 and the sleeve 52 are respectively rotatably connected to the side walls of two second-order mounting plates 46 through bearings. The ends of the slide rod 51 and the sleeve 52 that are far apart are respectively fixedly connected to the side walls of two fourth-order bevel gears 48. The synchronization component 5 is located within the bearing housing 1, and the two limiting blocks 54 are respectively located on both sides of the slide rod 51.

[0034] The working principle of this invention is as follows: When in use, the mold is first placed on the upper surface of the bearing housing 1, between the two clamping plates 27. Then, the first bidirectional threaded rod 21 is rotated. Since the threads of the first bidirectional threaded rod 21 are opposite, the two first nuts 22 will move towards each other under the action of the threads. The first limiting rod 24 and the connecting rod 26 drive the two clamping plates 27 to move relative to each other, so as to achieve the initial clamping of the mold.

[0035] After initial clamping, rotate the second double-threaded rod 32. The first bevel gear 43, mounted on its body, rotates synchronously. The first bevel gear 43 meshes with the second bevel gear 44 at the top of the first rotating shaft 42, driving the first rotating shaft 42 to rotate. The first rotating shaft 42 then drives the circumferentially fixed third bevel gear 47 to rotate. The third bevel gear 47 and the fourth bevel gear 48 cooperate, driving the fourth bevel gear 48 to rotate. Because the slide rod 51 and sleeve 52 are fixedly connected to the two fourth bevel gears 48 respectively, the slide rod 51 and sleeve 52 of the synchronization assembly 5, with the aid of the limiting block 54, interact with the fourth bevel gears 48. The engagement of the limiting groove 53 drives the two No. 4 bevel gears 48 to rotate synchronously. After the No. 4 bevel gears 48 rotate, they can drive the other No. 2 bidirectional threaded rod 32 to rotate in the opposite direction. During this process, the transmission components work together. Under the action of the No. 2 bidirectional threaded rod 32, the two No. 2 nuts 35 push the positioning clamp 36 towards the mold through the No. 2 limiting rod 34 until they are tightly attached to the mold surface, thus completing the precise positioning and fixing of the mold. The operation is convenient. The positioning and fixing components 3 on both sides can be driven at the same time, which helps to improve the clamping efficiency of the mold and thus improve the processing efficiency.

[0036] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A machining fixture for mold milling, characterized in that, include: Support shell (1); The clamping mechanism includes a clamping assembly (2), two positioning and fixing assemblies (3), two transmission assemblies (4), and a synchronization assembly (5). The clamping assembly (2) includes a first bidirectional threaded rod (21) rotatably connected to the inner wall of the bearing housing (1) via a bearing. The side end of the first bidirectional threaded rod (21) is rotatably connected to the side wall of the bearing housing (1) via a bearing. A first nut (22) is threadedly connected to the threaded sections of the first bidirectional threaded rod (21) with opposite thread directions. The upper surface of the bearing housing (1) is provided with two first limiting grooves. (23) A first limiting rod (24) is slidably connected in each of the two first limiting grooves (23). The bottom ends of the two first limiting rods (24) are fixedly connected to the upper surfaces of the two first nuts (22). Two bearing plates (25) are fixedly connected to the upper surface of the bearing housing (1). A connecting rod (26) is fixedly connected to the side wall of the two first limiting rods (24) that are close to each other. The two connecting rods (26) are slidably connected to the side wall of the two bearing plates (25). A clamping plate (27) is fixedly connected to the end of the two connecting rods (26) that are close to each other.

2. The machining fixture for mold milling according to claim 1, characterized in that, The positioning and fixing assembly (3) includes two fixing plates (31) fixedly connected to the side wall of the clamping plate (27) near the bearing plate (25). A second bidirectional threaded rod (32) is provided above the bearing housing (1). The second bidirectional threaded rod (32) is rotatably connected to the side wall of the two fixing plates (31) through a bearing. A second limiting groove (33) is provided on the side wall of the clamping plate (27). Two second limiting rods (34) are slidably connected in the second limiting groove (33). On the threaded sections of the second bidirectional threaded rod (32) with opposite thread directions, there are threaded connections of second nuts (35). The ends of the two second limiting rods (34) near the second bidirectional threaded rod (32) are respectively fixedly connected to the side walls of the two second nuts (35). The ends of the two second limiting rods (34) away from the second bidirectional threaded rod (32) are fixedly connected to positioning clamps (36). The side walls of the two positioning clamps (36) are in contact with the side walls of the clamping plate (27).

3. The machining fixture for mold milling according to claim 2, characterized in that, The transmission assembly (4) includes a first mounting plate (41) fixedly connected to the side wall of the clamping plate (27) near the bearing plate (25). A first rotating shaft (42) is provided below the second bidirectional threaded rod (32). The first rotating shaft (42) is rotatably connected to the upper surface of the first mounting plate (41) via a bearing. A first bevel gear (43) is fixedly connected circumferentially to the second bidirectional threaded rod (32). A second bevel gear (44) is fixedly connected to the top of the first rotating shaft (42). 3) It meshes with the second bevel gear (44). The upper surface of the bearing housing (1) is provided with the third limiting groove (45). The second mounting plate (46) is slidably connected in the third limiting groove (45). The upper surface of the second mounting plate (46) is fixedly connected to the bottom surface of the clamping plate (27). The first rotating shaft (42) is circumferentially fixedly connected with the third bevel gear (47). The side of the first rotating shaft (42) is provided with the fourth bevel gear (48). The third bevel gear (47) meshes with the fourth bevel gear (48).

4. The machining fixture for mold milling according to claim 3, characterized in that, The synchronization component (5) includes a slide rod (51) disposed in the bearing housing (1), a sleeve (52) is slidably sleeved on the slide rod (51), and two fourth limiting grooves (53) are opened on the side wall of the sleeve (52). Limiting blocks (54) are slidably connected in both fourth limiting grooves (53), and both limiting blocks (54) are fixedly connected to the side wall of the slide rod (51). The slide rod (51) and the sleeve (52) are respectively rotatably connected to the side walls of two second mounting plates (46) through bearings.

5. A machining fixture for mold milling according to claim 4, characterized in that, The sliding rod (51) and the sleeve (52) are respectively fixedly connected to the side walls of the two No. 4 bevel gears (48) at opposite ends.

6. A machining fixture for mold milling according to claim 2, characterized in that, The bottom surfaces of the two mounting plates (27) and the plurality of positioning plates (36) are all in contact with the upper surface of the bearing housing (1).

7. A machining fixture for mold milling according to claim 4, characterized in that, The synchronization component (5) is located inside the bearing housing (1), and the two limiting blocks (54) are located on both sides of the slide bar (51).

8. A machining fixture for mold milling according to claim 2, characterized in that, The two bearing plates (25) and the clamping plate (27) are arranged in parallel, and the two positioning clamping plates (36) in the positioning and fixing assembly (3) are arranged in parallel.

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