Chuck for milling cutter machining

Abstract

The utility model discloses a chuck for milling cutter processing belongs to milling cutter processing technical field, including support frame, the inside of support frame is provided with transmission cavity, the bottom fixed mounting of support frame inside is equipped with hydraulic cylinder, the clamping subassembly of utility model discloses through the ingenious structure design has realized the smooth conversion of horizontal clamping movement to the lift movement, and the transmission process is smooth and efficient, and effectively avoids the problem of jamming, its pusher sliding block, limit sliding block and the annular array distribution of strip clamping block, ensure that the clamping force that milling cutter receives is uniform symmetry, avoided the clamping deformation or position deviation of milling cutter because of uneven stress from the root, and the processing accuracy is effectively guaranteed, simultaneously, the compact and regular of component whole structure, and each movement part links closely, and the action is coherent, and no redundant gap produces, can thoroughly prevent the component blockage failure of metal scrapes in the processing process and causes the movement gap, and the stability of device operation and operating safety have been improved significantly.

Description

Technical Field

[0001] This utility model belongs to the field of milling cutter processing technology, and specifically relates to a chuck for milling cutter processing. Background Technology

[0002] Milling cutters are rotary cutting tools used in machining for milling operations. They mainly consist of two parts: the cutter body and the cutting edge. The cutter body is usually made of high-strength alloy steel or cemented carbide. The cutting edge is ground to form specific geometric angles (such as rake angle, clearance angle, and inclination angle). There are various types of milling cutters, including end mills, face mills, and three-sided milling cutters, which can be adapted to the machining of various workpiece structures such as planes, grooves, steps, and curved surfaces according to machining requirements.

[0003] During milling cutter production, the chuck, as a key fixture, is mounted on the machine tool table or spindle. Its core function is to achieve precise positioning and reliable fastening of the milling cutter blank / semi-finished product. The chuck can firmly fix the milling cutter blank by synchronous clamping of multiple jaws or independent adjustment, preventing displacement and vibration during machining. At the same time, it can ensure the coaxiality of the milling cutter reference surface and the machine tool spindle, ensuring the accuracy of the cutting tool's movement trajectory and providing a guarantee for the machining accuracy of subsequent processes.

[0004] While existing chucks can fix the milling cutter, their complex overall structure and numerous parts make it easy for assembly gaps or relative movement gaps to arise between the moving parts. During the milling cutter manufacturing process, metal chips generated during machining can easily enter these gaps, leading to component jamming, blockage, and other malfunctions. This not only directly interrupts the machining process and reduces production efficiency, but may also cause equipment overload or milling cutter positioning misalignment due to component jamming, posing safety hazards to the operation process and seriously affecting the continuity and reliability of machining. Utility Model Content

[0005] The purpose of this invention is to provide a chuck for milling cutter machining to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a chuck for milling cutter machining, comprising a support frame, a transmission cavity inside the support frame, a hydraulic cylinder fixedly installed at the bottom inside the support frame, a clamping assembly inside the transmission cavity, the clamping assembly including a lifting plate installed inside the transmission cavity, the telescopic end of the hydraulic cylinder passing through the transmission cavity and fixedly connected to the bottom of the lifting plate, a pushing slider fixedly connected to the top of the lifting plate, a limiting groove opened on the top inner wall of the support frame, a limiting slider slidably connected inside the limiting groove, the pushing slider slidably installed inside the limiting groove and in contact with the limiting slider, a transmission groove opened at the end of the limiting slider near the pushing slider, a transmission bar fixedly connected to the side of the pushing slider near the limiting slider, the transmission bar slidably connected inside the transmission groove, a strip-shaped clamping block fixedly installed at the top of the side of the limiting slider away from the pushing slider, and a placement groove opened in the middle of the top inner wall of the support frame.

[0007] In a preferred embodiment, the pushing slider, the limiting groove, the limiting slider and the strip clamping block are all arranged in a circular array, the placement groove is located at one end opposite to the strip clamping block, and the cross-section of the transmission bar and the transmission groove are both T-shaped.

[0008] In a preferred embodiment, the top of the limiting slider is provided with an installation groove, the inner wall of the installation groove is provided with a positioning groove, the bottom of the strip clamping block is provided with a connecting groove, and a positioning block is fixedly connected inside the connecting groove, the positioning block being adapted to the positioning groove.

[0009] In a preferred embodiment, the inner wall of the mounting groove is provided with a threaded hole, and the inside of the strip-shaped clamping block is connected with a bolt, which passes through the inside of the strip-shaped clamping block and is threadedly connected to the threaded hole.

[0010] In a preferred embodiment, an arc-shaped clamping block is fixedly connected to the end of the strip clamping block away from the limiting slider, and the arc-shaped clamping block has anti-slip protrusions inside.

[0011] In a preferred embodiment, a buffer pad is fixedly connected to the top of the lifting plate, and a mounting plate is fixedly connected to the bottom of the support frame, with mounting holes provided inside the mounting plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are: The clamping assembly of this utility model, through its ingenious structural design, achieves a smooth transition from lifting motion to horizontal clamping motion, resulting in a smooth and efficient transmission process that effectively avoids jamming issues. The circular array distribution of its pushing slider, limiting slider, and strip-shaped clamping blocks ensures that the clamping force on the milling cutter is uniform and symmetrical, fundamentally preventing clamping deformation or positional displacement of the milling cutter due to uneven force, thus strongly guaranteeing machining accuracy. Simultaneously, the overall structure of the assembly is compact and regular, with tight connections and continuous movements among all moving parts, eliminating unnecessary gaps. This completely prevents component blockage caused by metal chips getting stuck in the movement gaps during machining, significantly improving the stability and operational safety of the device.

[0013] This utility model features a threaded connection structure that provides a strong and stable connection, ensuring that the strip clamping block will not loosen or fall off during clamping and processing. The design of the bolt and threaded hole makes the disassembly and assembly of the strip clamping block simple and convenient, requiring no complicated tools. This allows workers to easily replace the corresponding strip clamping block according to the specifications and dimensions of the milling cutter, significantly improving the versatility and practicality of the device. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model; Figure 2 This is a schematic diagram of the exploded three-dimensional structure of this utility model; Figure 3 This is a three-dimensional structural diagram of a partial component of the clamping assembly of this utility model; Figure 4 This is a cross-sectional three-dimensional structural diagram of the support frame component of this utility model.

[0015] In the diagram: 1. Support frame; 2. Transmission cavity; 3. Hydraulic cylinder; 4. Clamping assembly; 5. Mounting groove; 6. Positioning groove; 7. Connecting groove; 8. Positioning block; 9. Threaded hole; 10. Bolt; 11. Arc-shaped clamping block; 12. Anti-slip protrusion; 13. Buffer pad; 14. Mounting plate; 15. Mounting hole; 401. Lifting plate; 402. Push slider; 403. Limiting slide groove; 404. Limiting slider; 405. Transmission groove; 406. Transmission bar; 407. Strip clamping block; 408. Placement groove. Detailed Implementation

[0016] The present invention will be further described below with reference to the embodiments.

[0017] The following embodiments are used to illustrate the present invention, but should not be used to limit the scope of protection of the present invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0018] Please see Figures 1 to 4 This utility model provides a chuck for milling cutter machining, including a support frame 1. A transmission cavity 2 is provided inside the support frame 1. A hydraulic cylinder 3 is fixedly installed at the bottom inside the support frame 1, providing driving force to move a lifting plate 401 up and down. A clamping assembly 4 is provided inside the transmission cavity 2, including the lifting plate 401 installed inside the transmission cavity 2. The telescopic end of the hydraulic cylinder 3 passes through the transmission cavity 2 and is fixedly connected to the bottom of the lifting plate 401. A push slider 402 is fixedly connected to the top of the lifting plate 401. A limiting groove 403 is provided on the inner wall of the top of the support frame 1. A limiting slider 404 is slidably connected inside the limiting groove 403. The push slider 402 is slidably installed inside the limiting groove 403 and in contact with the limiting slider 404. The push slider 402 is trapezoidal, narrower at the top and wider at the bottom. During the upward movement, the limiting slider 404 is squeezed, causing it to move and thus clamping the strip clamping block 407. The limiting slider 404 has a transmission groove 405 at one end near the pushing slider 402. The pushing slider 402 is fixedly connected to the side near the limiting slider 404 with a transmission bar 406. The transmission bar 406 is slidably connected inside the transmission groove 405. Since both the transmission bar 406 and the transmission groove 405 are T-shaped, the pushing slider 402 can push and pull the limiting slider 404 during the up and down movement. The top of the limiting slider 404 away from the pushing slider 402 is fixedly installed with a strip clamping block 407. The middle of the inner wall of the top of the support frame 1 is provided with a placement groove 408, which is used to place the milling cutter and achieve the initial positioning of the milling cutter. The push slider 402, the limiting groove 403, the limiting slider 404 and the strip clamping block 407 are all arranged in a ring array, which improves the stability of clamping. The placement groove 408 is located at one end opposite to the strip clamping block 407. The cross-sections of the transmission bar 406 and the transmission groove 405 are both T-shaped.

[0019] After the hydraulic cylinder 3 is activated, its telescopic end drives the lifting plate 401 to move up and down in the transmission cavity 2. The push slider 402 on the top of the lifting plate 401 moves synchronously with the lifting plate 401. Since the push slider 402 has a trapezoidal structure that is narrow at the top and wide at the bottom, and its T-shaped transmission bar 406 is slidably connected to the T-shaped transmission groove 405 of the limiting slider 404, when the push slider 402 moves upward, it will generate a lateral squeezing force on the limiting slider 404, causing the limiting slider 404 to slide along the limiting slide groove 403 towards the placement groove 408, thereby driving the strip clamping block 407 to move synchronously, realizing the clamping of the milling cutter in the placement groove 408. Conversely, when the hydraulic cylinder 3 retracts, it drives the lifting plate 401 to move downward. The push slider 402 pulls the limiting slider 404 to slide in the opposite direction through the cooperation of the transmission bar 406 and the transmission groove 405. The strip clamping block 407 disengages from the milling cutter, completing the release action. The clamping assembly 4 of this utility model, through its ingenious structural design, achieves a smooth transition from lifting motion to horizontal clamping motion, resulting in a smooth and efficient transmission process that effectively avoids jamming problems. The annular array distribution of its pushing slider 402, limiting slider 404, and strip-shaped clamping block 407 ensures that the clamping force on the milling cutter is uniform and symmetrical, fundamentally preventing clamping deformation or positional displacement of the milling cutter due to uneven force, thus strongly guaranteeing machining accuracy. Simultaneously, the overall structure of the assembly is compact and regular, with tight connections and continuous movements among the moving parts, eliminating unnecessary gaps. This completely prevents component blockage caused by metal chips getting stuck in the movement gaps during machining, significantly improving the stability and operational safety of the device.

[0020] Specifically, such as Figure 3 and Figure 4 As shown, the top of the limiting slider 404 is provided with an installation groove 5, the inner wall of the installation groove 5 is provided with a positioning groove 6, the bottom of the strip clamping block 407 is provided with a connecting groove 7, and a positioning block 8 is fixedly connected inside the connecting groove 7. The positioning block 8 is adapted to the positioning groove 6, which improves the convenience of installing and positioning the strip clamping block 407.

[0021] When installing the strip clamping block 407, align the positioning block 8 with the positioning groove 6 and insert it. The matching relationship between the positioning block 8 and the positioning groove 6 can restrict the position of the strip clamping block 407 in the installation groove 5, thereby achieving rapid positioning.

[0022] Specifically, such as Figure 2 and Figure 3 As shown, the inner wall of the mounting groove 5 is provided with a threaded hole 9, and the inside of the strip clamping block 407 is connected with a bolt 10. The bolt 10 passes through the inside of the strip clamping block 407 and is threadedly connected to the threaded hole 9, which facilitates the disassembly, assembly and replacement of the strip clamping block 407 by the staff.

[0023] During installation, after positioning the strip clamping block 407 by the positioning block 8, tighten the bolt 10 so that the bolt 10 fits tightly with the threaded hole 9, and the strip clamping block 407 can be firmly fixed in the mounting groove 5 of the limit slider 404; when disassembling or replacing, loosen the bolt 10 so that the bolt 10 is disengaged from the threaded hole 9, and the strip clamping block 407 can be removed.

[0024] This utility model features a threaded connection structure that provides a strong and stable connection, ensuring that the strip clamping block 407 will not loosen or fall off during clamping and processing. The design of the bolt 10 and the threaded hole 9 makes the disassembly and assembly of the strip clamping block 407 simple and convenient, requiring no complicated tools. This allows workers to easily replace the corresponding strip clamping block 407 according to the specifications and dimensions of the milling cutter, significantly improving the versatility and practicality of the device.

[0025] Specifically, such as Figure 3As shown, an arc-shaped clamping block 11 is fixedly connected to one end of the strip clamping block 407 away from the limiting slider 404. The arc-shaped clamping block 11 can adapt to the arc surface of the milling cutter, thereby improving the clamping stability. The arc-shaped clamping block 11 is provided with anti-slip protrusions 12 inside. The anti-slip protrusions 12 further increase the friction with the surface of the milling cutter, thereby improving the clamping stability and safety.

[0026] The arc-shaped clamping block 11 has an arc-shaped structure that matches the outer circular surface of the milling cutter. When clamping, the inner wall of the arc-shaped clamping block 11 can fit tightly against the surface of the milling cutter. The anti-slip protrusion 12 is provided so that when the arc-shaped clamping block 11 clamps the milling cutter, the anti-slip protrusion 12 directly contacts the surface of the milling cutter, thereby increasing the friction by increasing the roughness of the contact surface.

[0027] A buffer pad 13 is fixedly connected to the top of the lifting plate 401. The installation of the buffer pad 13 can limit the lifting plate 401 during its rise, preventing the lifting plate 401 from rising beyond its maximum value. An installation plate 14 is fixedly connected to the bottom of the support frame 1. The installation plate 14 has an installation hole 15 inside. The operator installs the device in a suitable position.

[0028] When the hydraulic cylinder 3 drives the lifting plate 401 to rise to its maximum stroke, the buffer pad 13 will contact the top of the transmission cavity 2, absorbing the impact force through its own elastic deformation, while limiting the further rise of the lifting plate 401.

[0029] Working principle and usage process of this utility model: First, the staff fixes the device in a suitable position on the processing equipment through the mounting hole 15 of the mounting plate 14 at the bottom of the support frame 1. Then, according to the milling cutter specifications, a suitable strip clamping block 407 is selected. The positioning block 8 in the bottom connecting groove 7 of the strip clamping block 407 is aligned with the positioning groove 6 on the inner wall of the mounting groove 5 of the limit slider 404 and inserted to complete the quick positioning. Then, the bolt 10 that passes through the strip clamping block 407 is tightened so that it fits tightly with the threaded hole 9 in the mounting groove 5 to achieve a firm fixation of the strip clamping block 407. The milling cutter is then placed in the placement slot 408 for initial positioning. The hydraulic cylinder 3 is activated, and its telescopic end drives the lifting plate 401 to move upward. The trapezoidal push slider 402 at the top of the lifting plate 401 rises synchronously. Through the cooperation of the T-shaped transmission bar 406 and the T-shaped transmission groove 405, a lateral squeezing force is generated on the limiting slider 404, causing the limiting slider 404 to slide along the limiting slide groove 403 towards the milling cutter. This causes the arc-shaped clamping block 11 at the end of the strip clamping block 407 to fit tightly against the outer surface of the milling cutter. The anti-slip protrusion 12 inside the arc-shaped clamping block 11 increases the friction of the contact surface, thus achieving stable clamping of the milling cutter. When the lifting plate 401 rises to its maximum stroke, the buffer pad 13 on its top contacts the top of the transmission cavity 2, absorbing the impact force and limiting the position through elastic deformation. After machining is completed, the hydraulic cylinder 3 is retracted, the lifting plate 401 drives the push slider 402 to move downward, and the transmission bar 406 pulls the limit slider 404 to slide in the opposite direction, the arc-shaped clamping block 11 disengages from the milling cutter, and the machined milling cutter can be taken out.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A chuck for milling cutter machining, comprising a support frame (1), characterized in that: The support frame (1) has a transmission cavity (2) inside. A hydraulic cylinder (3) is fixedly installed at the bottom inside the support frame (1). A clamping assembly (4) is provided inside the transmission cavity (2). The clamping assembly (4) includes a lifting plate (401) installed inside the transmission cavity (2). The telescopic end of the hydraulic cylinder (3) passes through the transmission cavity (2) and is fixedly connected to the bottom of the lifting plate (401). A push slider (402) is fixedly connected to the top of the lifting plate (401). A limit groove (403) is opened on the inner wall of the top of the support frame (1). A limit slider (404) is slidably connected inside the limit groove (403). The push slider (402) is slidably installed inside the limiting slide groove (403) and in contact with the limiting slider (404). The limiting slider (404) has a transmission groove (405) at one end near the push slider (402). A transmission bar (406) is fixedly connected to the side of the push slider (402) near the limiting slider (404). The transmission bar (406) is slidably connected inside the transmission groove (405). A strip-shaped clamping block (407) is fixedly installed on the top of the side of the limiting slider (404) away from the push slider (402). A placement groove (408) is opened in the middle of the top inner wall of the support frame (1).

2. The chuck for milling according to claim 1, characterized in that: The push slider (402), the limiting groove (403), the limiting slider (404), and the strip clamping block (407) are all arranged in a ring array. The placement groove (408) is located at one end opposite to the strip clamping block (407). The cross-sections of the transmission bar (406) and the transmission groove (405) are both T-shaped.

3. The chuck for milling according to claim 1, characterized in that: The top of the limiting slider (404) is provided with an installation groove (5), the inner wall of the installation groove (5) is provided with a positioning groove (6), the bottom of the strip clamping block (407) is provided with a connecting groove (7), and a positioning block (8) is fixedly connected inside the connecting groove (7). The positioning block (8) is adapted to the positioning groove (6).

4. A chuck for milling according to claim 3, characterized in that: The inner wall of the mounting groove (5) is provided with a threaded hole (9), and the inside of the strip clamping block (407) is connected with a bolt (10). The bolt (10) passes through the inside of the strip clamping block (407) and is threadedly connected to the threaded hole (9).

5. A chuck for milling according to claim 1, characterized in that: The end of the strip clamping block (407) away from the limiting slider (404) is fixedly connected to an arc-shaped clamping block (11), and the inside of the arc-shaped clamping block (11) is provided with anti-slip protrusions (12).

6. A chuck for milling according to claim 1, characterized in that: The top of the lifting plate (401) is fixedly connected to a buffer pad (13), and the bottom of the support frame (1) is fixedly connected to an mounting plate (14). The mounting plate (14) has an installation hole (15) inside.

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