A high-precision positioning device for milling a mold cavity

Abstract

This invention relates to the field of milling machining auxiliary technology, and discloses a high-precision milling positioning device for mold cavities. The device includes a frame, a top plate fixedly mounted on the upper part of the inner cavity of the frame, a bottom plate fixedly mounted on the lower part of the inner cavity of the frame, a mold body placed in the center of the upper end face of the top plate, a gear box fixedly mounted in the center of the lower end face of the top plate, and sliding seats fixedly mounted on the left and right sides of the lower end face of the bottom plate. The device also includes a mounting assembly located below the frame; a driving assembly located on the upper end face of the bottom plate; a clamping assembly located on the upper end face of the top plate; and a buffer assembly located above the top plate. This invention, through the mounting assembly, allows the entire positioning device to be installed inside a milling machine. Through the cooperation of the driving assembly and the clamping assembly, self-centering clamping of the mold body can be achieved, facilitating milling of the mold cavity by the operator.

Description

Technical Field

[0001] This invention relates to the field of milling machining auxiliary tools, specifically a high-precision milling positioning device for mold cavities. Background Technology

[0002] In the production and processing of bearing caps, the ends of the bearing caps need to be milled to make the end surface of the bearing caps flat and meet the requirements of production and processing. When processing the bearing caps, in terms of milling, a bench vise is usually used for positioning and clamping.

[0003] For example, the positioning device for turning gear milling disclosed in CN118926972A includes a machining table, a feeding platform fixedly installed on the top of the machining table, a slide rail provided below the feeding platform, a positioning mechanism provided on the slide rail, the positioning mechanism including positioning plates, the number of positioning plates being two, and being driven to move relative to each other, and being respectively placed on opposite sides of the feeding platform; a shifting mechanism is provided at the bottom of the machining table, the shifting mechanism being connected to the slide rail through a transmission and used to drive the slide rail to rotate so that the two positioning plates are placed on the other opposite sides of the feeding platform.

[0004] In the aforementioned patent documents, the clamping and positioning of the fork is achieved by adjusting the positions of the two positioning plates. This positioning method requires the mold to be placed in the exact center of the feeding table. It lacks a self-centering mechanism for the mold, which means that the milling cutter needs to be repositioned during subsequent milling, which is time-consuming and labor-intensive.

[0005] Therefore, there is an urgent need for a high-precision milling and positioning device for mold cavities to solve this problem. Summary of the Invention

[0006] (a) Technical problems to be solved

[0007] The purpose of this invention is to provide a high-precision milling and positioning device for mold cavities to solve the problems mentioned in the background art.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, the present invention provides the following technical solution: a high-precision milling and positioning device for mold cavities, comprising a device frame, a top plate fixedly installed on the upper part of the inner cavity of the device frame, a bottom plate fixedly installed on the lower part of the inner cavity of the device frame, a mold body placed in the middle of the upper end face of the top plate, a gear box fixedly installed in the middle of the lower end face of the top plate, and sliding seats fixedly installed on the left and right sides of the lower end face of the bottom plate, further comprising: The mounting component is disposed below the device frame and is used to move the sliding base back and forth. A drive assembly is disposed on the upper surface of the base plate, and the drive assembly is used to provide power for clamping the mold body; A clamping assembly is disposed on the upper end face of the top plate, and the clamping assembly is used to position the mold body; A buffer assembly is disposed above the top plate and is used to buffer the mold body when it is clamped.

[0010] Preferably, the mounting assembly includes guide rails fixedly installed on the left and right sides of the bottom surface of the milling machine cavity, and a positioning plate fixedly installed in the middle of the bottom surface of the milling machine cavity. The sliding seat slides in the cavity of the guide rail, and an adjusting plate is fixedly installed between the sliding seats on the left and right sides. The adjusting plate slides in the cavity of the guide rail.

[0011] Preferably, an adjusting screw is rotatably installed between the positioning plates on the front and rear sides, and an internal hexagonal column is fixedly installed on the front end face of the adjusting screw, and the adjusting screw is threadedly connected to the adjusting plate.

[0012] Preferably, the drive assembly includes a positioning column rotatably mounted on the middle of the upper surface of the base plate, and a vertical plate fixedly mounted on the upper surface of the base plate near the positioning column. A drive worm is rotatably mounted in the inner cavity of the vertical plate, and a drive worm wheel is fixedly mounted on the middle of the outer side wall of the positioning column. The drive worm and the drive worm wheel are meshed and connected. A drive motor is fixedly mounted on the upper surface of the base plate near the vertical plate via a frame.

[0013] Preferably, the output shaft end of the drive motor is fixedly connected to the drive worm gear, a drive bevel gear is rotatably mounted on the upper part of the inner cavity of the gear box, and driven bevel gears are rotatably mounted on the front, back and left and right sides of the inner cavity of the gear box. The driven bevel gears are meshed with the drive bevel gears, and the positioning pin is fixedly connected to the drive bevel gears.

[0014] Preferably, the clamping assembly includes clamping screws rotatably mounted on the front, rear, left, and right side walls of the inner cavity of the equipment frame. The clamping screws are fixedly connected to the driven bevel gear. The clamping screws on the front and rear sides have opposite helical directions, and the clamping screws on the left and right sides have opposite helical directions.

[0015] Preferably, a limiting groove is formed around the upper end surface of the top plate, an extension rod is slidably installed in the inner cavity of the limiting groove, a movable seat is fixedly installed on the lower end surface of the extension rod, the movable seat is engaged with the clamping screw, and a top platform is fixedly installed on the upper end surface of the extension rod.

[0016] Preferably, a heat dissipation groove is provided on the outer side wall of the equipment frame, and a number of heat dissipation grooves are provided. An auxiliary arm is fixedly installed on the lower end face of the top platform. The auxiliary arm slides on the upper end face of the top plate, and the lower end face of the auxiliary arm is corrugated.

[0017] Preferably, the buffer assembly includes ear plates fixedly installed at both ends of the upper surface of the top platform, and a guide rod rotatably installed in the inner cavity of the ear plates. Buffer blocks are slidably installed at both ends of the side wall of the guide rod, a buffer spring is wound on the outer side wall of the guide rod, a buffer arm is rotatably installed on the side wall of the buffer block, and a clamping plate is rotatably installed at the end of the buffer arm away from the buffer block.

[0018] Preferably, the buffer arms located at both ends of the guide rod are staggered, one end of the buffer spring is fixedly installed on the side wall of the buffer block, and the other end is fixedly installed on the side wall of the ear plate, and the buffer block slides on the upper surface of the top platform.

[0019] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, the drive motor can be started to run, causing the drive worm to rotate. The drive worm meshes with the drive worm wheel, which in turn drives the positioning pin to rotate. Since the positioning pin is fixedly connected to the drive bevel gear, and the driven bevel gear meshes with the drive bevel gear, the driven bevel gear drives the clamping screw to rotate. With the clamping screws on the front and rear sides having opposite helical directions, and under the limiting constraint of the extension rod by the limiting groove, the movable seats on the front, rear, left, and right sides can simultaneously drive the top platform to approach or move away. With the cooperation of the clamping plate, the mold body can be self-centered and clamped, so that the worker can perform milling processing on the mold body in the same coordinate system, greatly improving the worker's work efficiency.

[0020] 2. In this invention, ear plates are fixedly installed at both ends of the upper surface of the top platform. As the four sets of top platforms approach each other, the clamping plate can come into contact with the mold body. Excessive clamping force on the mold body can be transmitted to the buffer arm through the clamping plate. The buffer arms located at both ends of the guide rod are staggered and rotate relative to each other. At this time, the buffer arm can drive the buffer block to slide towards both ends of the guide rod and compress the buffer spring. At this time, the buffer spring can absorb the excessive reaction force of clamping the mold body to ensure the safety of the entire device in clamping and positioning the mold body. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of a high-precision milling positioning device for mold cavities according to the present invention (left view). Figure 2 This is a top view schematic diagram of the overall structure of a high-precision milling positioning device for mold cavities according to the present invention; Figure 3 This is a front view schematic diagram of the overall structure of a high-precision milling positioning device for mold cavities according to the present invention; Figure 4This is a cross-sectional view of the equipment frame of a high-precision milling and positioning device for mold cavities according to the present invention. Figure 5 This is a schematic diagram of the internal structure of the equipment frame of the high-precision milling positioning device for mold cavity of the present invention; Figure 6 This is a cross-sectional view of the gear box section of a high-precision milling positioning device for mold cavities according to the present invention. Figure 7 This is a schematic diagram of the connection structure at the top platform of the high-precision milling positioning device for mold cavity of the present invention.

[0022] In the diagram: 1. Equipment frame; 11. Heat dissipation slot; 2. Top plate; 21. Limiting slot; 3. Base plate; 4. Gear box; 5. Sliding seat; 6. Mounting assembly; 61. Guide rail; 62. Positioning plate; 63. Adjusting plate; 64. Adjusting screw; 65. Hexagonal socket head cap; 7. Drive assembly; 71. Positioning column; 72. Vertical plate; 73. Drive worm gear; 74. Drive worm wheel; 75. Drive motor; 76. Drive bevel gear; 77. Driven bevel gear; 8. Clamping assembly; 81. Clamping screw; 82. Extension rod; 83. Movable seat; 84. Top platform; 85. Auxiliary arm; 9. Buffer assembly; 91. Ear plate; 92. Guide rod; 93. Buffer block; 94. Buffer spring; 95. Buffer arm; 96. Clamping plate. Detailed Implementation

[0023] 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 embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Please see Figures 1-7 This invention provides a technical solution for a high-precision milling and positioning device for mold cavities: A high-precision milling and positioning device for mold cavities includes a frame 1, a top plate 2 fixedly installed on the upper part of the inner cavity of the frame 1, a bottom plate 3 fixedly installed on the lower part of the inner cavity of the frame 1, a mold body placed in the middle of the upper end face of the top plate 2, a gear box 4 fixedly installed in the middle of the lower end face of the top plate 2, and sliding seats 5 fixedly installed on the left and right sides of the lower end face of the bottom plate 3, and further includes: Mounting component 6 is located below the device frame 1 and is used to move the sliding seat 5 back and forth. Drive component 7 is disposed on the upper end face of base plate 3. Drive component 7 is used to provide power for clamping the mold body. Clamping assembly 8 is disposed on the upper end face of top plate 2 and is used to position the mold body; The buffer assembly 9 is located above the top plate 2 and is used to buffer the mold body when it is clamped.

[0025] Furthermore, the mounting assembly 6 includes guide rails 61 fixedly installed on the left and right sides of the bottom surface of the milling machine cavity, and positioning plate 62 fixedly installed in the middle of the bottom surface of the milling machine cavity. The sliding seat 5 slides in the cavity of the guide rail 61, and an adjusting plate 63 is fixedly installed between the sliding seats 5 on the left and right sides. The adjusting plate 63 slides in the cavity of the guide rail 61. An adjusting screw 64 is rotatably installed between the positioning plates 62 on the front and rear sides. An internal hexagonal column 65 is fixedly installed on the front end face of the adjusting screw 64, and the adjusting screw 64 is threadedly connected to the adjusting plate 63.

[0026] It should be noted that the worker can install the positioning plate 62 and the guide rail 61 on the bottom surface of the milling machine cavity to achieve the initial installation of the equipment frame 1. Then, the worker can rotate the internal hexagonal column 65 to rotate the adjusting screw 64. Since the adjusting screw 64 is threadedly connected to the adjusting plate 63, the adjusting plate 63 can drive the sliding seats 5 on the left and right sides to move back and forth in the cavity of the guide rail 61 to adjust the position of the equipment frame 1 in the milling machine cavity. Thus, through the above-described method, this device can be quickly installed inside the milling machine and put into use.

[0027] Furthermore, the drive assembly 7 includes a positioning column 71 rotatably mounted on the middle of the upper end face of the base plate 3, and a vertical plate 72 fixedly mounted on the side of the upper end face of the base plate 3 near the positioning column 71. A drive worm 73 is rotatably mounted in the inner cavity of the vertical plate 72, and a drive worm wheel 74 is fixedly mounted on the middle of the outer side wall of the positioning column 71. The drive worm 73 and the drive worm wheel 74 are meshed and connected. A drive motor 75 is fixedly mounted on the side of the upper end face of the base plate 3 near the vertical plate 72 via a frame. The output shaft of the drive motor 75 is fixedly connected to the drive worm gear 73. The drive bevel gear 76 is rotatably mounted on the upper part of the inner cavity of the gear box 4. The driven bevel gear 77 is rotatably mounted on the front, back and left and right sides of the inner cavity of the gear box 4. The driven bevel gear 77 is meshed with the drive bevel gear 76. The positioning pin 71 is fixedly connected to the drive bevel gear 76.

[0028] It should be noted that the drive motor 75 can be started to run, causing the drive worm 73 to rotate. The drive worm 73 is engaged with the drive worm wheel 74. At this time, the drive worm wheel 74 can drive the positioning pin 71 to rotate. Since the positioning pin 71 is fixedly connected to the drive bevel gear 76, the driven bevel gear 77 is engaged with the drive bevel gear 76. At this time, the driven bevel gear 77 can drive the clamping screw 81 to rotate.

[0029] Furthermore, the clamping assembly 8 includes clamping screws 81 rotatably mounted on the front, rear and left and right side walls of the inner cavity of the equipment frame 1. The clamping screws 81 are fixedly connected to the driven bevel gear 77. The clamping screws 81 on the front and rear sides have opposite spiral directions, and the clamping screws 81 on the left and right sides have opposite spiral directions. A limiting groove 21 is provided around the upper end face of the top plate 2. An extension rod 82 is slidably installed in the inner cavity of the limiting groove 21. A movable seat 83 is fixedly installed on the lower end face of the extension rod 82. The movable seat 83 is engaged with the clamping screw 81. A top platform 84 is fixedly installed on the upper end face of the extension rod 82. A heat dissipation groove 11 is provided on the outer side wall of the equipment frame 1. Several sets of heat dissipation grooves 11 are provided. An auxiliary arm 85 is fixedly installed on the lower end face of the top platform 84. The auxiliary arm 85 slides on the upper end face of the top plate 2. The lower end face of the auxiliary arm 85 is corrugated.

[0030] It should be noted that, with the clamping screws 81 on the front and rear sides spiraling in opposite directions, and under the limiting constraint of the extension rod 82 by the limiting groove 21, the movable seats 83 on the front, rear, left and right sides can simultaneously drive the top platform 84 to approach or move away. At this time, with the cooperation of the clamping plate 96, the mold body can be self-centered and clamped, so that the worker can perform milling on the mold body in the same coordinate, which greatly improves the worker's work efficiency. By setting the lower end face of the auxiliary arm 85 to be corrugated, the friction between the auxiliary arm 85 and the top plate 2 can be increased to ensure the stability of the top platform 84 during use.

[0031] Furthermore, the buffer assembly 9 includes ear plates 91 fixedly installed at both ends of the upper end face of the top platform 84, and a guide rod 92 rotatably installed in the inner cavity of the ear plates 91. Buffer blocks 93 are slidably installed at both ends of the side wall of the guide rod 92. Buffer springs 94 are wound and installed on the outer side wall of the guide rod 92. Buffer arms 95 are rotatably installed on the side wall of the buffer blocks 93. A clamping plate 96 is rotatably installed at the end of the buffer arm 95 away from the buffer block 93. The buffer arms 95 located at both ends of the guide rod 92 are staggered. One end of the buffer spring 94 is fixedly installed on the side wall of the buffer block 93, and the other end is fixedly installed on the side wall of the ear plate 91. The buffer block 93 slides on the upper surface of the top platform 84.

[0032] It should be noted that ear plates 91 are fixedly installed at both ends of the upper surface of the top platform 84. As the four sets of top platforms 84 approach each other, the clamping plate 96 can come into contact with the mold body. Excessive clamping force on the mold body can be transmitted to the buffer arm 95 through the clamping plate 96. The buffer arms 95 located at both ends of the guide rod 92 are staggered and rotate relative to each other. At this time, the buffer arm 95 can drive the buffer block 93 to slide towards both ends of the guide rod 92 and compress the buffer spring 94. At this time, the buffer spring 94 can absorb the excessive reaction force of clamping the mold body to ensure the safety of the entire device in clamping and positioning the mold body.

[0033] Working principle: After the worker places the mold body on the upper surface of the top plate 2, the drive motor 75 can be started to run, causing the drive worm 73 to rotate. The drive worm 73 meshes with the drive worm wheel 74, which in turn drives the positioning pin 71 to rotate. Since the positioning pin 71 is fixedly connected to the drive bevel gear 76, the driven bevel gear 77 meshes with the drive bevel gear 76. The driven bevel gear 77 drives the clamping screw 81 to rotate. With the clamping screws 81 on the front and rear sides having opposite spiral directions, and under the limiting constraint of the extension rod 82 by the limiting groove 21, the movable seats 83 on the front, rear, left and right sides can drive the top platform 84 to move closer or further away simultaneously. With the cooperation of the clamping plate 96, the mold body can be self-centered and clamped, so that the worker can perform milling on the mold body in the same coordinate system, which greatly improves the worker's work efficiency. Ear plates 91 are fixedly installed at both ends of the upper surface of the top platform 84. As the four sets of top platforms 84 approach each other, the clamping plate 96 can come into contact with the mold body. Excessive clamping force on the mold body can be transmitted to the buffer arm 95 through the clamping plate 96. The buffer arms 95 located at both ends of the guide rod 92 are staggered and rotate relative to each other. At this time, the buffer arm 95 can drive the buffer block 93 to slide towards both ends of the guide rod 92 and compress the buffer spring 94. At this time, the buffer spring 94 can absorb the excessive reaction force of clamping the mold body to ensure the safety of the entire device in clamping and positioning the mold body.

[0034] Finally, it should be noted that the above content is only used to illustrate the technical solution of the present invention, and is not intended to limit the scope of protection of the present invention. Simple modifications or equivalent substitutions made by those skilled in the art to the technical solution of the present invention do not depart from the essence and scope of the technical solution of the present invention.

Claims

1. A high-precision milling and positioning device for mold cavities, comprising a device frame (1), wherein a top plate (2) is fixedly installed on the upper part of the inner cavity of the device frame (1), and a bottom plate (3) is fixedly installed on the lower part of the inner cavity of the device frame (1), characterized in that: A mold body is placed in the middle of the upper end face of the top plate (2), a gear box (4) is fixedly installed in the middle of the lower end face of the top plate (2), and sliding seats (5) are fixedly installed on the left and right sides of the lower end face of the bottom plate (3). The plate also includes: Mounting component (6), which is disposed below the device frame (1), is used to move the sliding seat (5) back and forth; A drive assembly (7) is disposed on the upper surface of the base plate (3) and is used to provide power for clamping the mold body. Clamping assembly (8) is disposed on the upper end face of the top plate (2) and is used to position the mold body; A buffer assembly (9) is disposed above the top plate (2) and is used to buffer the mold body when it is clamped.

2. The high-precision milling positioning device for mold cavities according to claim 1, characterized in that: The mounting assembly (6) includes guide rails (61) fixedly installed on the left and right sides of the bottom surface of the milling machine cavity, and positioning plate (62) fixedly installed in the middle of the bottom surface of the milling machine cavity. The sliding seat (5) slides in the cavity of the guide rail (61). An adjusting plate (63) is fixedly installed between the sliding seats (5) on the left and right sides. The adjusting plate (63) slides in the cavity of the guide rail (61).

3. The high-precision milling positioning device for mold cavities according to claim 2, characterized in that: An adjusting screw (64) is rotatably installed between the positioning plates (62) on the front and rear sides. An internal hexagonal column (65) is fixedly installed on the front end face of the adjusting screw (64). The adjusting screw (64) is threadedly connected to the adjusting plate (63).

4. The high-precision milling positioning device for mold cavities according to claim 1, characterized in that: The drive assembly (7) includes a positioning column (71) rotatably mounted on the middle of the upper end face of the base plate (3) and a vertical plate (72) fixedly mounted on the side of the upper end face of the base plate (3) near the positioning column (71). A drive worm (73) is rotatably mounted in the inner cavity of the vertical plate (72). A drive worm wheel (74) is fixedly mounted on the middle of the outer side wall of the positioning column (71). The drive worm (73) and the drive worm wheel (74) are meshed and connected. A drive motor (75) is fixedly mounted on the side of the upper end face of the base plate (3) near the vertical plate (72) via a frame.

5. The high-precision milling positioning device for mold cavities according to claim 4, characterized in that: The output shaft of the drive motor (75) is fixedly connected to the drive worm (73). The upper part of the inner cavity of the gear box (4) is rotatably mounted with a drive bevel gear (76). The front, back and left and right sides of the inner cavity of the gear box (4) are rotatably mounted with driven bevel gears (77). The driven bevel gears (77) are meshed with the drive bevel gears (76). The positioning pin (71) is fixedly connected with the drive bevel gears (76).

6. The high-precision milling positioning device for mold cavities according to claim 4, characterized in that: The clamping assembly (8) includes clamping screws (81) rotatably mounted on the front, rear and left and right side walls of the inner cavity of the equipment frame (1). The clamping screws (81) are fixedly connected to the driven bevel gear (77). The clamping screws (81) on the front and rear sides have opposite spiral directions, and the clamping screws (81) on the left and right sides have opposite spiral directions.

7. The high-precision milling positioning device for mold cavities according to claim 6, characterized in that: The top plate (2) has a limiting groove (21) around its upper end surface. An extension rod (82) is slidably installed in the inner cavity of the limiting groove (21). A movable seat (83) is fixedly installed on the lower end surface of the extension rod (82). The movable seat (83) is engaged with the clamping screw (81). A top platform (84) is fixedly installed on the upper end surface of the extension rod (82).

8. The high-precision milling positioning device for mold cavities according to claim 7, characterized in that: The outer wall of the equipment frame (1) is provided with heat dissipation grooves (11), and a number of heat dissipation grooves (11) are provided. An auxiliary arm (85) is fixedly installed on the lower end face of the top platform (84). The auxiliary arm (85) slides on the upper end face of the top plate (2), and the lower end face of the auxiliary arm (85) is corrugated.

9. The high-precision milling positioning device for mold cavities according to claim 7, characterized in that: The buffer assembly (9) includes ear plates (91) fixedly installed at both ends of the upper end face of the top platform (84), and a guide rod (92) rotatably installed in the inner cavity of the ear plates (91). Buffer blocks (93) are slidably installed at both ends of the side wall of the guide rod (92). Buffer springs (94) are wound on the outer side wall of the guide rod (92). Buffer arms (95) are rotatably installed on the side wall of the buffer blocks (93). A clamping plate (96) is rotatably installed at the end of the buffer arm (95) away from the buffer block (93).

10. A high-precision milling positioning device for mold cavities according to claim 9, characterized in that: The buffer arms (95) located at both ends of the guide rod (92) are staggered. One end of the buffer spring (94) is fixedly installed on the side wall of the buffer block (93), and the other end is fixedly installed on the side wall of the ear plate (91). The buffer block (93) slides on the upper surface of the top platform (84).

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