Fixture for milling machine tool to machine precise mold parts
By using the coordinated movement of the internal thread moving block and the limiting column of the milling machine tool fixture, the problem of frequent fixture replacement in the existing technology is solved, and the stable fixing and efficient processing of precision mold parts at multiple angles is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-30
- Publication Date
- 2026-03-24
AI Technical Summary
Existing milling and grinding machines require frequent fixture changes when machining precision mold parts of different shapes, resulting in wasted manufacturing time.
A milling machine tool fixture was designed. Through the coordinated movement of the internal thread moving block and the limiting column, the placement plate can be adjusted at multiple angles. Combined with the limiting gear and spring locking structure, the parts are securely fixed at different angles.
It enables flexible adjustment and stable fixation of parts at multiple angles, reduces fixture change time, and improves processing efficiency.
Smart Images
Figure CN224027014U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of milling machine tool technology, and in particular to a fixture for milling machine tools for machining precision mold parts. Background Technology
[0002] Existing milling and grinding machines are often equipped with fixtures to hold workpieces in place. However, when used to process different products, such as various workpieces in molds, milling and grinding of workpieces with different shapes, such as round rods, angled mandrels, and inserts, is required.
[0003] In actual use, milling machines require changing different angle fixtures during the machining process of precision molds, resulting in a waste of manufacturing time for individual parts. Utility Model Content
[0004] The purpose of this utility model is to provide a fixture for machining precision mold parts on a milling machine. Two internally threaded moving blocks move relative to or away from each other. The internally threaded moving blocks drive the first positioning block and the second limiting post to move, so that the adjusting connecting block rotates around the second limiting post. At the same time, the first limiting post rotates within the adjusting connecting block, thereby driving the second positioning block to move. This coordinated operation allows the placement plate to rotate around the connection between the rotating connecting block and the positioning post, meeting the requirements of several specific angles when machining different precision mold parts.
[0005] To achieve the above objectives, a fixture for machining precision mold parts on a milling machine tool is provided, comprising: a mounting base, wherein first support plates are fixedly connected to both the front and rear sides of the upper surface of the mounting base, and a double-threaded rod is disposed between the two first support plates. Two internally threaded moving blocks are threadedly connected to the outer surface of the double-threaded rod, and first positioning blocks are fixedly connected to both the left and right sides of the upper surface of the two internally threaded moving blocks. A second limiting post is fixedly connected between the two first positioning blocks, and an adjusting connecting block is rotatably connected to the outer surface of the second limiting post. The adjusting connecting block is rotatably connected to the inner side of the first limiting post, and second positioning blocks are fixedly connected to both the left and right sides of the outer surface of the first limiting post. This provides a stable support structure and enables flexible rotation through multi-component linkage, facilitating multi-angle adjustment and machining of parts.
[0006] According to the fixture for machining precision mold parts on a milling machine tool, the threaded teeth on the left and right sides of the outer surface of the double-ended threaded rod have opposite directions of rotation, and the two internal thread moving blocks are symmetrically arranged on the front and rear sides of the outer surface of the double-ended threaded rod. The opposite thread directions enable the internal thread moving blocks to move symmetrically, achieving precise synchronous adjustment and improving the angle adjustment accuracy.
[0007] According to the fixture for machining precision mold parts on a milling machine tool, the dimensions of the adjusting connecting block are adapted to the dimensions of the first limiting post and the second limiting post. This dimensional adaptation ensures smooth rotation of all components, reduces frictional loss, and guarantees stable and reliable angle adjustment.
[0008] According to the fixture for machining precision mold parts on a milling machine tool, the double-ended threaded rod extends to the front surface of the first support plate, and a limiting gear is fixedly connected to the outer surface of the double-ended threaded rod. The limiting gear, in conjunction with subsequent structures, effectively restricts the rotation of the double-ended threaded rod and fixes the angle of the adjusted part.
[0009] According to the fixture for machining precision mold parts on a milling machine tool, an adjusting turntable is fixedly connected to the front surface of the double-ended threaded rod, and the adjusting turntable is located in front of the limiting gear. A limiting sliding post is fixedly connected to the front surface of the first support plate. A sliding groove is formed on the front surface of the limiting sliding post. A spring is sleeved on the inner surface of the sliding groove. The front surface of the spring abuts against a contact plate, and the contact plate abuts against the inner surface of the sliding groove. A connecting post is fixedly connected to the front surface of the contact plate. A locking post is fixedly connected to the front surface of the connecting post, and the outer surface of the locking post abuts against the limiting gear. The adjusting turntable facilitates operation, and the spring and locking post cooperate to achieve flexible limiting, ensuring angle adjustment and fixation.
[0010] According to the fixture for machining precision mold parts on a milling machine tool, the mounting base has positioning holes at all four corners. Two second support plates are fixedly connected to the side of the mounting base away from the first support plate, and positioning posts are fixedly connected between the second support plates. A rotating connecting block is rotatably connected to the outer surface of each positioning post. A placement plate is fixedly connected to the upper surface of the rotating connecting block, and the lower surface of the placement plate away from the rotating connecting block is fixedly connected to a second positioning block. The positioning holes facilitate installation and fixation, and the cooperation of multiple components allows the placement plate to rotate flexibly, meeting different machining angle requirements.
[0011] According to the fixture for machining precision mold parts on a milling machine tool, the upper surface of the placement plate has four corners with sliding grooves. Limiting sliders are fixedly connected to the inner surfaces of the sliding grooves via limiting bolts. An abutment block is fixedly connected to the upper surface of the limiting slider, and three friction blocks are fixedly connected to the sidewall of the abutment block. The sliding grooves and limiting sliders cooperate to flexibly adjust the position of the abutment blocks, and the friction blocks increase friction to firmly fix the parts.
[0012] The above-mentioned solution has the following beneficial effects:
[0013] This utility model comprises a first support plate, a double-threaded rod, an internally threaded moving block, a first positioning block, a second limiting post, an adjusting connecting block, and a second positioning block. The two internally threaded moving blocks move relative to or away from each other. The internally threaded moving blocks drive the first positioning block and the second limiting post to move, causing the adjusting connecting block to rotate around the second limiting post. At the same time, the first limiting post rotates within the adjusting connecting block, thereby driving the second positioning block to move. This coordinated operation allows the placement plate to rotate around the connection between the rotating connecting block and the positioning post, meeting the requirements of several specific angles during the processing of different precision mold parts.
[0014] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments;
[0016] Figure 1 This is a perspective view of a fixture for machining precision mold parts on a milling machine tool according to the present invention;
[0017] Figure 2 This is a front view of a fixture for machining precision mold parts on a milling machine tool according to the present invention;
[0018] Figure 3 This is a cross-sectional perspective view of a fixture for machining precision mold parts on a milling machine tool according to the present invention;
[0019] Figure 4 For utility model Figure 3 Enlarged view of the structure at point A in the middle;
[0020] Figure 5 For utility model Figure 3 Enlarged view of the structure at point B
[0021] Legend:
[0022] 1. Mounting base; 2. Positioning hole; 3. Positioning post; 4. Placement plate; 5. Rotating connecting block; 6. First support plate; 7. Internal threaded moving block; 8. First positioning block; 9. Adjusting connecting block; 10. Second positioning block; 11. First limiting post; 12. Double-ended threaded rod; 13. Second limiting post; 14. Adjusting turntable; 15. Limiting gear; 16. Limiting sliding post; 17. Sliding groove; 18. Spring; 19. Abutment plate; 20. Connecting post; 21. Locking post; 22. Limiting slider; 23. Abutment block; 24. Friction block; 25. Limiting bolt; 26. Sliding groove; 27. Second support plate. Detailed Implementation
[0023] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.
[0024] Reference Figure 1-5 This utility model discloses a fixture for machining precision mold parts on a milling machine tool, comprising: a mounting base 1, with first support plates 6 fixedly connected to both the front and rear sides of the upper surface of the mounting base 1. The mounting base 1 provides a stable mounting foundation for the first support plates 6, ensuring that the first support plates 6 can be firmly set on it, guaranteeing the stability of subsequent component installation and operation. A double-ended threaded rod 12 is provided between the two first support plates 6, providing support and mounting positions for the double-ended threaded rod 12, allowing the double-ended threaded rod 12 to rotate stably between them to achieve subsequent transmission functions. Two internally threaded moving blocks 7 are threadedly connected to the outer surface of the double-ended threaded rod 12. The double-ended threaded rod 12 cooperates with the internally threaded moving blocks 7 through its threaded structure. When the double-ended threaded rod 12 rotates, it can drive the two internally threaded moving blocks 7 to perform relative or opposite linear movements on its outer surface. First positioning blocks 8 are fixedly connected to the left and right sides of the upper surface of the two internally threaded moving blocks 7, providing mounting carriers for the first positioning blocks 8. The movement of the internally threaded moving blocks 7 will... The first positioning block 8 moves synchronously, thereby affecting the position of other related components. A second limiting post 13 is fixedly connected between the two first positioning blocks 8. The first positioning block 8 fixes and positions the second limiting post 13, ensuring its stable position and providing support for the rotation of the adjusting connecting block 9. The outer surface of the second limiting post 13 is rotatably connected to the adjusting connecting block 9. The second limiting post 13 serves as the rotation axis of the adjusting connecting block 9, allowing the adjusting connecting block 9 to rotate around it, thus adjusting the angle of the placement plate 4. The interior of the adjusting connecting block 9 is rotatably connected to a first limiting post 11, providing rotation space and support for the first limiting post 11. The first limiting post 11 can rotate within the adjusting connecting block 9, further cooperating to adjust the angle of the placement plate 4. Second positioning blocks 10 are fixedly connected to the left and right sides of the outer surface of the first limiting post 11. The first limiting post 11 provides the installation position for the second positioning block 10, and when the first limiting post 11 rotates, it drives the second positioning block 10 to move, thus affecting the angle of the placement plate 4.
[0025] The threads on the left and right sides of the outer surface of the double-ended threaded rod 12 rotate in opposite directions. Two internal thread moving blocks 7 are symmetrically arranged on the front and rear sides of the outer surface of the double-ended threaded rod 12. This rotation direction and arrangement allow the two internal thread moving blocks 7 to move simultaneously in opposite directions when the double-ended threaded rod 12 rotates, achieving symmetrical adjustment of the angle of the placement plate 4. The size of the adjusting connecting block 9 is matched with the sizes of the first limiting post 11 and the second limiting post 13. This appropriate size matching ensures smooth rotational connection between the adjusting connecting block 9 and the first limiting post 11 and the second limiting post 13, ensuring the normal operation of the angle adjustment function. The double-ended threaded rod 12 extends to the front surface of the first support plate 6. A limiting gear 15 is fixedly connected to the outer surface of the double-threaded rod 12. The first support plate 6 provides space for the extension of the double-threaded rod 12. The limiting gear 15 is fixedly connected to the double-threaded rod 12 and can rotate with it for subsequent limiting operations. An adjusting turntable 14 is fixedly connected to the front surface of the double-threaded rod 12, and the adjusting turntable 14 is located in front of the limiting gear 15. The adjusting turntable 14 provides an operating component for the operator to easily rotate the double-threaded rod 12. By rotating the adjusting turntable 14, the double-threaded rod 12 can be driven to rotate. A limiting sliding post 16 is fixedly connected to the front surface of the first support plate 6, and the first support plate 6 provides a secure base for the limiting sliding post 16. The foundation is installed to ensure its stable placement on the front surface of the first support plate 6, providing support for the subsequent limiting structure. A sliding groove 17 is formed on the front surface of the limiting sliding post 16. The sliding groove 17 provides a track and space for the sliding of the spring 18 and the contact plate 19, ensuring they can slide along a predetermined path. A spring 18 is fitted onto the inner surface of the sliding groove 17, acting as an elastic buffer and resetting mechanism. When an external force is applied to the contact plate 19, the spring 18 is compressed; after the external force disappears, the spring 18 resets the contact plate 19. The front surface of the spring 18 abuts against the contact plate 19, and the contact plate 19 abuts against the inner surface of the sliding groove 17. The contact plate 19 is in contact with the inner surface of the sliding groove 17 under the action of the spring 18, and can slide within the sliding groove 17. The force is transmitted through the elastic force of the spring 18. The front surface of the contact plate 19 is fixedly connected to the connecting post 20, and the contact plate 19 provides the installation position for the connecting post 20. When the contact plate 19 slides within the sliding groove 17, it will drive the connecting post 20 to move synchronously. The front surface of the connecting post 20 is fixedly connected to the locking post 21, and the outer surface of the locking post 21 abuts against the limiting gear 15. The connecting post 20 transmits the movement of the contact plate 19 to the locking post 21. The locking post 21 abuts against the limiting gear 15, and restricts the rotation of the double-ended threaded rod 12 through the cooperation with the limiting gear 15, thus playing a positioning role.
[0026] The mounting base 1 has positioning holes 2 at each of its four corners. These holes are used to fix the mounting base 1 to other equipment or a workbench using bolts or other connectors, ensuring the mounting base 1 remains in a fixed position. Two second support plates 27 are fixedly connected to the side of the mounting base 1 away from the first support plate 6, and positioning posts 3 are fixedly connected between the second support plates 27. The mounting base 1 provides the mounting foundation for the second support plates 27, and the second support plates 27 provide support and fixation for the positioning posts 3, ensuring the stability of the positioning posts 3. A rotating connecting block 5 is rotatably connected to the outer surface of the positioning post 3. The positioning post 3 acts as the rotation axis of the rotating connecting block 5, allowing the rotating connecting block 5 to rotate around the positioning post 3, providing support for the rotation of the placement plate 4. The upper surface of the rotating connecting block 5 is fixedly connected to the placement plate 4, providing support and a rotational foundation for the placement plate 4. The placement plate 4 can rotate around the positioning post 3 with the rotating connecting block 5, and its angle is also adjusted by the influence of the second positioning block 10. The lower surface of the placement plate 4 away from the rotating connecting block 5 is connected to the second positioning block 10. Block 10 is fixedly connected. The movement of the second positioning block 10 will cause the placement plate 4 to change its angle, thereby realizing the angle adjustment of the parts placed on the placement plate 4. The upper surface of the placement plate 4 has four corners with sliding grooves 26. The sliding grooves 26 provide a sliding track and space for the limiting slider 22, so that the limiting slider 22 can be adjusted on the placement plate 4. The inner surface of the sliding groove 26 is fixedly connected to the limiting slider 22 by the limiting bolt 25. The limiting bolt 25 can fix the limiting slider 22 at any position in the sliding groove 26. The position of the abutment block 23 can be adjusted as needed. The upper surface of the limiting slider 22 is fixedly connected to the abutment block 23. The limiting slider 22 provides an installation position for the abutment block 23. The movement of the limiting slider 22 will drive the abutment block 23 to move synchronously, which is used to abut and position the parts placed on the placement plate 4. Three friction blocks 24 are fixedly connected to the side wall of the abutment block 23. The friction blocks 24 increase the friction between the abutment block 23 and the parts, so that the abutment block 23 can abut the parts more stably and prevent the parts from moving during the processing.
[0027] Working principle: First, the fixture is fixed to the worktable of the milling machine or other equipment using bolts and other connectors through the positioning holes 2 at the four corners of the mounting base 1, ensuring the mounting base 1 is stable. Manually pull the connecting column 20, which drives the locking column 21 and the contact plate 19 to overcome the elastic force of the spring 18, causing the locking column 21 to separate from the limit gear 15, releasing the limit on the double-ended threaded rod 12. Rotate the adjusting turntable 14, which drives the double-ended threaded rod 12 to rotate. Since the thread teeth on the left and right sides of the outer surface of the double-ended threaded rod 12 rotate in opposite directions, the two internal thread moving blocks 7 will make relative or opposite linear movements on its outer surface. The movement of the internal thread moving blocks 7 drives the first positioning block 8 and the second limit column 13 to move synchronously. The adjusting connecting block 9 rotates around the second limit column 13, while the first limit column 11 rotates within the adjusting connecting block 9, thereby driving the second positioning block 10 to move, so that the placement plate 4 rotates around the rotating connecting block 13. The connection between the connecting block 5 and the positioning post 3 is rotated to adjust the angle of the placement plate 4. After adjusting to the appropriate angle, the connecting post 20 is released, the spring 18 returns to its original position and pushes the abutment plate 19, causing the locking post 21 to abut against the limiting gear 15 again, restricting the rotation of the double-ended threaded rod 12 and fixing the angle of the placement plate 4. The precision mold part is then placed on the placement plate 4. According to the size and shape of the part, the limiting bolt 25 is loosened, allowing the limiting slider 22 to slide in the slide groove 26. The position of the abutment block 23 is adjusted so that the side wall of the abutment block 23 is close to the part. After adjustment, the limiting bolt 25 is tightened to fix the position of the limiting slider 22 and the abutment block 23. At this time, the friction block 24 on the side wall of the abutment block 23 will increase the friction between it and the part, stably abutting the part and preventing it from moving during processing. After completing the above steps, the milling machine can be started to process the precision mold part fixed on the fixture.
[0028] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.
Claims
1. A fixture for machining precision mold parts on a milling machine tool, comprising: The mounting base (1) is characterized in that: a first support plate (6) is fixedly connected to both the front and rear sides of the upper surface of the mounting base (1), a double-headed threaded rod (12) is provided between the two first support plates (6), two internal threaded moving blocks (7) are threadedly connected to the outer surface of the double-headed threaded rod (12), a first positioning block (8) is fixedly connected to both the left and right sides of the upper surface of the two internal threaded moving blocks (7), a second limiting post (13) is fixedly connected between the two first positioning blocks (8), an adjusting connecting block (9) is rotatably connected to the outer surface of the second limiting post (13), a first limiting post (11) is rotatably connected to the inside of the adjusting connecting block (9), and a second positioning block (10) is fixedly connected to both the left and right sides of the outer surface of the first limiting post (11).
2. The fixture for machining precision mold parts on a milling machine tool according to claim 1, characterized in that: The threads on the left and right sides of the outer surface of the double-ended threaded rod (12) rotate in opposite directions, and the two internal thread moving blocks (7) are symmetrically arranged on the front and rear sides of the outer surface of the double-ended threaded rod (12).
3. The fixture for machining precision mold parts on a milling machine tool according to claim 1, characterized in that: The dimensions of the adjusting connecting block (9) are adapted to the dimensions of the first limiting post (11) and the second limiting post (13).
4. The fixture for machining precision mold parts on a milling machine tool according to claim 1, characterized in that: The double-ended threaded rod (12) extends to the front surface of the first support plate (6), and a limit gear (15) is fixedly connected to the outer surface of the double-ended threaded rod (12).
5. A fixture for machining precision mold parts on a milling machine tool according to claim 4, characterized in that: The front surface of the double-ended threaded rod (12) is fixedly connected to an adjusting turntable (14), and the adjusting turntable (14) is located in front of the limiting gear (15). The front surface of the first support plate (6) is fixedly connected to a limiting sliding column (16). The front surface of the limiting sliding column (16) is provided with a sliding groove (17). The inner surface of the sliding groove (17) is sleeved with a spring (18). The front surface of the spring (18) abuts against a contact plate (19), and the contact plate (19) abuts against the inner surface of the sliding groove (17). The front surface of the contact plate (19) is fixedly connected to a connecting column (20), and the front surface of the connecting column (20) is fixedly connected to a locking column (21), and the outer surface of the locking column (21) abuts against the limiting gear (15).
6. A fixture for machining precision mold parts on a milling machine tool according to claim 1, characterized in that: The mounting base (1) has positioning holes (2) at all four corners. Two second support plates (27) are fixedly connected to the side of the mounting base (1) away from the first support plate (6), and positioning columns (3) are fixedly connected between the second support plates (27). A rotating connecting block (5) is rotatably connected to the outer surface of the positioning column (3). A placement plate (4) is fixedly connected to the upper surface of the rotating connecting block (5). The lower surface of the placement plate (4) away from the rotating connecting block (5) is fixedly connected to the second positioning block (10).
7. A fixture for machining precision mold parts on a milling machine tool according to claim 6, characterized in that: The upper surface of the placement plate (4) is provided with four corners of a sliding groove (26). The inner surface of the sliding groove (26) is fixedly connected to a limiting slider (22) by a limiting bolt (25). The upper surface of the limiting slider (22) is fixedly connected to an abutment block (23). The side wall of the abutment block (23) is fixedly connected to three friction blocks (24).