A high-precision cutter holder for a moving disc

Abstract

The utility model relates to the technical field of milling cutter holder, specifically relates to a high accuracy cutter holder of disk milling, including milling cutter and holder, the top of holder is fixed in milling cutter, including the bit and base in milling cutter, the top of base is fixed in bit, including the carriage, the fixed frame of fixed carriage outside and the two groups of side plates of fixed carriage inside in holder, the inside of carriage is equipped with the sliding slot and the inner groove, the sliding slot and the inner groove keep intercommunication, and fixed in the hollow ring frame in the inner groove, the connecting hole of the middle part of carriage is opened and runs through, the fixed rod is inserted in the ring frame, simultaneously, the nesting cooperation between fixed rod and ring frame, fixed shaft and round groove, further guarantee the coaxial degree of milling cutter. This multiple positioning mode effectively limits the radial and axial deviation of milling cutter in the milling process, significantly improves the positioning accuracy, and further guarantees the size accuracy and surface finish of the machined parts, and is suitable for high-precision machining scene.

Description

Technical Field

[0001] This utility model relates to the field of milling tool fixture technology, specifically to a high-precision tool fixture for moving disc milling. Background Technology

[0002] In the field of machining, milling with a moving cutter is a commonly used precision machining method, widely applied in industries such as aerospace, automotive manufacturing, and mold processing, where the precision requirements for parts are extremely high. The accuracy of milling directly depends on the positioning accuracy between the milling cutter and the workpiece, the clamping stability, and the overall rigidity of the tool holder. Therefore, as the core component connecting the machine tool and the milling cutter, the performance of the tool holder plays a decisive role in the machining quality.

[0003] Currently available moving-disc milling cutter fixtures on the market have gradually revealed many shortcomings in practical applications. On the one hand, the milling cutter fixing structure of traditional fixtures mostly adopts a single bolt fastening or simple nesting method. This fixing method is difficult to guarantee the coaxiality of the milling cutter during high-speed rotating milling, and the milling cutter is prone to displacement due to vibration, which in turn affects the surface finish and dimensional accuracy of the machined surface. On the other hand, the adjustment flexibility of existing fixtures is poor. The connection between the side plate and the carriage, and between the slide plate and the positioning structure, is mostly a fixed and non-adjustable design. When it is necessary to change to different models of milling cutters or adapt to different machining scenarios, it is often necessary to disassemble the entire fixture for readjustment. This is not only cumbersome and time-consuming, but also prone to displacement of the positioning reference due to repeated disassembly and installation, reducing machining consistency.

[0004] In addition, the insufficient anti-slip performance and structural stability of traditional fixtures are also problems that urgently need to be solved. The axial and radial forces generated during milling can easily cause relative sliding between the slide plate and the side plate, resulting in the position of the milling cutter moving around; at the same time, the connection rigidity between the fixed frame and the slide of some fixtures is insufficient, and the vibration generated during high-speed milling will be transmitted to the milling cutter, further aggravating the machining error. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a high-precision tool holder for moving disc milling, which can effectively solve the problems in the existing technology.

[0006] This utility model provides a high-precision tool holder for moving disc milling, including a milling cutter and a fixture. The milling cutter is fixed at the top of the fixture and includes a cutter head and a base. The cutter head is fixed at the top of the base. The fixture includes a carriage, a fixing frame fixed to the outside of the carriage, and two sets of side plates fixed to the inside of the carriage. The inner side of the carriage has a sliding groove and an inner groove that are connected. A hollow ring frame is fixed in the inner groove. A connecting hole is opened through the middle of the carriage. A fixing rod is inserted into the ring frame. A circular groove is opened in the middle of the fixing rod. The circular groove is fixedly connected to a fixing shaft by a pin. The fixing shaft is inserted and fixed in the slide plate. The slide plate and the side plates are inserted into the groove at the bottom of the base.

[0007] Furthermore, the two sets of side plates are fixed to the inner groove of the slide frame by bolts, and the bottom end of the slide plate is fixed with two sets of protrusions, which are arranged on the inner sides of both ends of the slide groove.

[0008] Furthermore, each set of connecting holes has a half-annular groove at the top of the ring frame, a shaft hole in the middle of the fixed shaft, and a cross-shaped positioning hole inside the slide plate, with the fixed shaft inserted into the positioning hole.

[0009] Furthermore, the fixed frame is fixed to the outside of the slide by bolts, and a rotating groove is provided on one side of the fixed frame. An inner frame is inserted into the rotating groove, and the inner frame and the fixed frame are rotatably connected by a sleeve rod.

[0010] Furthermore, the spindle shape has a larger central ring diameter than the two end ring diameters, and the length of one side of the fixing rod is less than the width of the inner groove.

[0011] Furthermore, anti-slip pads are fixed to the inner walls of the side plates at both ends and the top sides of the slide plate.

[0012] The beneficial effects of this utility model are as follows: This fixture adopts a multi-positioning structure design. The milling cutter base is fitted with the side plate via a sliding plate, and the sliding plate has a cross-shaped positioning hole inside, in which the fixed shaft is inserted for precise positioning. At the same time, the nested fit between the fixed rod and the ring frame, and between the fixed shaft and the circular groove, further ensures the coaxiality of the milling cutter. This multi-positioning method effectively limits the radial and axial displacement of the milling cutter during the milling process, significantly improves the positioning accuracy, and thus ensures the dimensional accuracy and surface finish of the machined parts, making it suitable for high-precision machining scenarios.

[0013] In this device, anti-slip plates are fixed to the inner walls of the two end side plates of the fixture and the two sides of the top of the slide plate. The anti-slip plates can effectively increase the friction between the slide plate and the side plates and avoid relative sliding caused by force during milling. The fixing rod adopts a spindle-shaped structure with a central ring diameter larger than the ring diameters at both ends. This structure makes the fixing rod nested more tightly in the ring frame, enhancing the rigidity of the overall structure. In addition, the fixing frame and the slide are fastened with bolts, and the inner frame and the fixing frame are rotatably connected by a sleeve rod, which improves the overall vibration resistance of the fixture, effectively reduces the vibration transmission during high-speed milling, and further ensures the clamping stability. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is an exploded view of the structure of this utility model; Figure 3 This is an exploded view of the fixture in this utility model. Figure 4 This is an exploded view of the slide and the fixing frame in this utility model; Figure 5 This is a structural exploded view of the slide plate, fixed shaft, and slide frame in this utility model.

[0016] The labels in the diagram represent: 1. Milling cutter; 11. Cutting head; 12. Base; 2. Fixture; 21. Carriage; 211. Slide; 212. Connecting hole; 213. Inner groove; 22. Fixing frame; 221. Rotating groove; 23. Side plate; 24. Slide plate; 241. Positioning hole; 242. Protrusion; 25. Fixing shaft; 251. Shaft hole; 26. Fixing rod; 261. Pin; 27. Ring frame; 28. Inner frame; 281. Sleeve rod. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model 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 this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0018] The present invention will be further described below with reference to the embodiments.

[0019] Example: A high-precision tool holder for moving disc milling, see attached document. Figure 1 -Appendix Figure 5 The device includes a milling cutter 1 and a clamp 2. The milling cutter 1 is fixed to the top of the clamp 2. The milling cutter 1 includes a cutter head 11 and a base 12. The cutter head 11 is fixed to the top of the base 12. The clamp 2 includes a slide 21, a fixing frame 22 fixed to the outside of the slide 21, and two sets of side plates 23 fixed to the inside of the slide 21. The slide 21 has a sliding groove 211 and an inner groove 213 on its inner side. The sliding groove 211 and the inner groove 213 are connected. A hollow ring frame 27 is fixed in the inner groove 213. A connecting hole 212 is opened through the middle of the slide 21. A fixing rod 26 is inserted in the ring frame 27. A circular groove is opened in the middle of the fixing rod 26. The circular groove is fixedly connected to a fixing shaft 25 by a pin 261. The fixing shaft 25 is inserted and fixed in a slide plate 24. The slide plate 24 and the side plates 23 are inserted into the groove at the bottom of the base 12. Two sets of side plates 23 are fixed to the inner groove 211 of the slide 21 by bolts. Two sets of protrusions 242 are fixed at the bottom of the slide plate 24, and the two sets of protrusions 242 are set on the inner side of both ends of the groove 211. The groove 211 opened on the inner side of the slide 21 is connected to the inner groove 213, and the hollow ring frame 27 is fixed in the inner groove 213, forming a stable support structure. The design of the middle ring diameter of the fixing rod 26 being larger than that at both ends not only enhances its own rigidity, but also forms a tight fit with the ring frame 27, dispersing the stress generated during milling. The components are fastened together by bolts, pins 261, etc., ensuring the stability and reliability of the overall structure, reducing component wear caused by structural loosening, and extending the service life of the tool holder 2.

[0020] Each set of connecting holes 212 has a half-annular groove at the top of the ring frame 27, a shaft hole 251 is provided in the middle of the fixed shaft 25, and a cross-shaped positioning hole 241 is provided inside the slide plate 24, in which the fixed shaft 25 is inserted; the fixed frame 22 is fixed to the outside of the slide 21 by bolts, and a rotating groove 221 is provided on one side of the fixed frame 22. An inner frame 28 is inserted into the rotating groove 221, and the inner frame 28 and the fixed frame 22 are rotatably connected by a sleeve rod 281.

[0021] Two sets of side plates 23 are fixed to the slide grooves 211 inside the slide 21 by bolts. Two sets of protrusions 242 at the bottom of the slide plate 24 are adapted to the inner sides of both ends of the slide groove 211, so that the positions of the side plates 23 and the slide plate 24 in the slide groove 211 can be flexibly adjusted according to the milling cutter 1 model and processing requirements without disassembling the entire fixture 2. The rotating groove 221 on one side of the fixed frame 22 cooperates with the inner frame 28, and the rotation adjustment is achieved by the sleeve rod 281, which can quickly adapt to different processing angle requirements. This convenient adjustment method greatly shortens the tool changing and debugging time, improves production efficiency, and reduces the labor intensity of operators.

[0022] The spindle shape has a central ring diameter larger than the two end ring diameters, and the length of one side of the fixed rod 26 is less than the width of the inner groove 213. This fixture 2 adopts a multi-positioning structure design. The base 12 of the milling cutter 1 is inserted and engaged with the side plate 23 through the slide plate 24, and the slide plate 24 has a cross-shaped positioning hole 241 inside, in which the fixed shaft 25 is inserted to achieve precise positioning. At the same time, the nested engagement between the fixed rod 26 and the ring frame 27, and between the fixed shaft 25 and the circular groove, further ensures the coaxiality of the milling cutter 1. This multi-positioning method effectively limits the radial and axial displacement of the milling cutter 1 during the milling process, significantly improves the positioning accuracy, and thus ensures the dimensional accuracy and surface finish of the machined parts, making it suitable for high-precision machining scenarios.

[0023] Anti-slip plates are fixed to the inner walls of the two end side plates 23 and the top sides of the slide plate 24. The anti-slip plates can effectively increase the friction between the slide plate 24 and the side plates 23, and avoid relative sliding caused by force during milling. The fixing rod 26 adopts a spindle-shaped structure with a central ring diameter larger than the ring diameters at both ends. This structure makes the fixing rod 26 nested more tightly in the ring frame 27, which enhances the rigidity of the overall structure. In addition, the fixing frame 22 and the slide frame 21 are fastened with bolts, and the inner frame 28 and the fixing frame 22 are rotatably connected by the sleeve rod 281, which improves the overall vibration resistance of the clamp 2, effectively reduces the vibration transmission during high-speed milling, and further ensures the clamping stability.

[0024] In use: First, pre-assemble the milling cutter 1 with the slide plate 24 and the fixed shaft 25. Align the groove at the bottom of the base 12 of the milling cutter 1 with the top of the slide plate 24 and insert it, so that the slide plate 24 and the base 12 form a preliminary fit. Then, insert the fixed shaft 25 into the cross-shaped positioning hole 241 inside the slide plate 24. The bidirectional limiting effect of the cross structure achieves precise positioning of the slide plate 24 and the fixed shaft 25. At the same time, align the shaft hole 251 in the middle of the fixed shaft 25 with the circular groove of the fixed rod 26. Use the pin 261 to pass through the shaft hole 251 and the circular groove to complete the rigid connection between the fixed rod 26 and the fixed shaft 25. At this time, the milling cutter 1 forms an integrated positioning structure with the slide plate 24, the fixed shaft 25 and the fixed rod 26, laying the foundation for subsequent coaxiality assurance. The integrated positioning structure is pushed into the inner groove 213 inside the slide 21, so that the fixing rod 26 is embedded in the hollow ring frame 27 pre-set in the inner groove 213. Utilizing the spindle-shaped structure of the fixing rod 26, which is "thick in the middle and thin at both ends", it forms a tight nested state of "fitting in the middle and limiting at both ends" within the ring frame 27, effectively restricting the radial movement of the fixing rod 26. At the same time, the two sides of the slide plate 24 are aligned with the two sets of side plates 23 inside the slide 21, and the side plates 23 are fixed in the slide groove 211 of the slide 21 by bolts. The anti-slip plate on the inner side wall of the side plate 23... The anti-slip plates on both sides of the top of the slide plate 24 are in contact with each other, and the friction force is used to further restrict the axial sliding of the slide plate 24, so as to achieve multiple fixation of the milling cutter 1 in the slide 21. The installation angle of the fixture 2 and the position of the milling cutter 1 can be adjusted according to the processing requirements. The angle adjustment is achieved by the cooperation of the fixing frame 22 and the inner frame 28. The inner frame 28 is inserted into the rotating groove 221 on one side of the fixing frame 22. The two are rotatably connected by the sleeve rod 281. After rotating the inner frame 28 to the target angle, the sleeve rod 281 is locked, so as to fix the angle of the fixture 2 and the machine tool connection end. Position adjustment is achieved through the cooperation of the slide groove 211 and the protrusions 242. The two sets of protrusions 242 at the bottom of the slide plate 24 are fitted into the inner sides of both ends of the slide groove 211. After loosening the fixing bolts of the side plate 23, the slide plate 24 can be pushed along the direction of the slide groove 211 to move the milling cutter 1 horizontally. After adjusting to the appropriate machining position, the bolts are tightened again to achieve precise fine-tuning of the machining position of the milling cutter 1. After starting the milling operation, the radial cutting force generated by the high-speed rotation of the milling cutter 1 is transmitted to the slide plate 24 through the base 12. The friction between the anti-slip plates on both sides of the slide plate 24 and the side plate 23 effectively resists the friction. The lateral force is eliminated to avoid relative sliding; the axial force is transmitted to the fixed rod 26 through the fixed shaft 25. The tight contact surface between the middle of the spindle-shaped fixed rod 26 and the ring frame 27 disperses the force to the entire slide 21. Together with the bolt fastening structure between the fixed frame 22 and the slide 21, a rigid support system of "local force-overall force transmission" is formed, which greatly reduces vibration transmission. At the same time, the multiple nesting structure of the fixed rod 26 and the ring frame 27, and the slide plate 24 and the side plate 23, always ensures the coaxiality of the milling cutter 1, ensures the stability of the cutting trajectory, and finally achieves high-precision milling.

[0025] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model 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 this utility model.

Claims

1. A high-precision tool holder for moving disc milling, characterized in that, The fixture includes a milling cutter (1) and a clamp (2). The milling cutter (1) is fixed to the top of the clamp (2). The milling cutter (1) includes a cutter head (11) and a base (12). The cutter head (11) is fixed to the top of the base (12). The clamp (2) includes a carriage (21), a fixing bracket (22) fixed to the outside of the carriage (21), and two sets of side plates (23) fixed to the inside of the carriage (21). The inside of the carriage (21) is provided with a sliding groove (211) and an inner groove (213). It is connected to the inner groove (213) and a hollow ring frame (27) is fixed in the inner groove (213). A connecting hole (212) is opened through the middle of the slide (21). A fixing rod (26) is inserted in the ring frame (27). A circular groove is opened in the middle of the fixing rod (26). The circular groove is fixedly connected to the fixing shaft (25) by a pin (261). The fixing shaft (25) is inserted and fixed in the slide plate (24). The slide plate (24) and the side plate (23) are inserted into the groove at the bottom of the base (12).

2. The high-precision tool holder for moving disc milling according to claim 1, characterized in that, The two sets of side plates (23) are fixed in the slide groove (211) inside the slide (21) by bolts. The bottom end of the slide plate (24) is fixed with two sets of protrusions (242), and the two sets of protrusions (242) are arranged inside the two ends of the slide groove (211).

3. A high-precision tool holder for moving disc milling according to claim 1, characterized in that, Each of the connecting holes (212) has a half-annular groove at the top of the ring frame (27), the fixed shaft (25) has a shaft hole (251) in the middle, and a cross-shaped positioning hole (241) is provided inside the slide plate (24), and the fixed shaft (25) is inserted into the positioning hole (241).

4. A high-precision tool holder for moving disc milling according to claim 1, characterized in that, The fixed frame (22) is fixed to the outside of the slide (21) by bolts. A rotating groove (221) is provided on one side of the fixed frame (22). An inner frame (28) is inserted into the rotating groove (221). The inner frame (28) and the fixed frame (22) are rotatably connected by a sleeve rod (281).

5. A high-precision tool holder for moving disc milling according to claim 4, characterized in that, The middle ring diameter of the fixed rod (26) is larger than the ring diameters at both ends of the spindle shape, and the length of one side of the fixed rod (26) is smaller than the width of the inner groove (213).

6. A high-precision tool holder for moving disc milling according to claim 1, characterized in that, Anti-slip plates are fixed to the inner walls of the side plates (23) at both ends and the top sides of the slide plate (24).

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