Milling cutter replacing device

Abstract

The invention relates to the technical field of milling, in particular to a milling cutter replacing device which comprises a base, a disc tool magazine is mounted at the rear end of the upper side of the base and comprises a cutter head, a plurality of mounting cylinders which are uniformly arranged in the circumferential direction are mounted at the front end of the cutter head, detachable cutter sleeves are mounted in the mounting cylinders, and a cutter taking ring is mounted at the front end of the cutter head through a driving part. Unlocking parts in one-to-one correspondence with the knife pouches are mounted on the knife taking ring; the cutter sleeve is locked on the cutter head in a detachable mode, when the milling cutters on the cutter head need to be checked, maintained or replaced, locking between the cutter sleeve and the cutter head is relieved, meanwhile, the cutter sleeve is locked on the cutter taking ring, the cutter taking ring drives the cutter sleeve to move forwards, the cutter sleeve and the corresponding milling cutters are separated from the cutter head, and therefore the cutter sleeve and the corresponding milling cutters are separated from the cutter head. Therefore, the specified milling cutter can be taken out under the condition of not interrupting the normal operation of the cutter head, and the continuous operation capability and the machining efficiency of equipment are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of milling technology, specifically a milling cutter changing device. Background Technology

[0002] In the field of machining, milling is a widely used metal cutting process. The milling cutter, as the core tool in milling, directly determines machining accuracy, workpiece surface quality, and machining efficiency. For workpieces of different materials and machining processes, it is necessary to replace the milling equipment with milling cutters of appropriate specifications and types to meet diverse machining needs. At the same time, with the accumulation of machining time, milling cutters inevitably experience wear, dulling, and even chipping during high-speed cutting. This not only affects the machining accuracy and surface quality of the workpiece but can also lead to equipment failure or workpiece scrap in severe cases. Therefore, it is necessary to inspect, maintain, or replace the milling cutters to ensure machining quality and extend their service life.

[0003] In existing milling equipment, disc tool magazines are commonly used as tool storage and changing devices. They mainly consist of components such as a cutter head and a tool holder. The milling cutter is clamped in the tool holder, and the cutter head can rotate around its own axis to achieve the tool selection action. During operation, the rotation of the cutter head is controlled according to the machining requirements. First, the tool holder carrying the target milling cutter is rotated to the preset tool changing position. Then, through the tool changing mechanism, the milling cutter is taken out from the tool holder and installed on the spindle. At the same time, the milling cutter removed from the spindle is put back into the tool holder, realizing the automatic replacement of the milling cutter.

[0004] The existing disc tool magazine has the following problems during operation: The disc tool magazine can only realize the automatic exchange of milling cutters between itself and the spindle. During continuous production, since the milling cutters on the disc tool magazine need to be checked for wear, cleaned and maintained regularly, or replaced with new milling cutters in time after they are damaged, it is necessary to manually take out the milling cutters to be processed one by one from the tool magazine, process them, and then put them back into the tool magazine. At this time, the disc tool magazine needs to be stopped, which interrupts the normal production rhythm and reduces production efficiency. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a milling cutter changing device, including a base, a disc tool magazine installed on the upper rear end of the base, the disc tool magazine including a cutter disc, a plurality of circumferentially evenly arranged mounting cylinders installed on the front end of the cutter disc, a detachable tool sleeve installed in the mounting cylinder, a tool retrieval ring installed on the front end of the cutter disc via a drive unit, the tool retrieval ring having an unlocking part corresponding to each tool sleeve; the tool sleeve and the mounting cylinder are locked by a spring clip; the tool retrieval ring has circular holes corresponding to each mounting cylinder, and the unlocking part includes a plurality of circumferentially evenly arranged unlocking plates installed in the circular holes by a synchronizing member, the unlocking plates being close to the circular holes. A plug rod is fixedly installed at the front end of one side of the hole; a drive shaft is fixedly installed at the front center of the cutter head, and the drive unit includes a sliding sleeve that is slidably sleeved on the outside of the drive shaft. The sliding sleeve is fixedly connected to the tool-retrieving ring through a connecting rod. An active component is connected between the front end of the sliding sleeve and the base. When the cutter head rotates, it drives the tool-retrieving ring to rotate synchronously through the drive shaft. When a specific milling cutter is removed, the corresponding synchronous component drives the unlocking plate to release the lock of the spring buckle. At the same time, the plug rod locks the tool sleeve in the round hole. Then, the active component drives the tool-retrieving ring to move forward through the sliding sleeve, so that the tool sleeve moves out of the mounting cylinder. The tool-retrieving ring stops rotating with the cutter head, realizing the inspection, maintenance or replacement of the milling cutter without stopping the machine.

[0006] Preferably, the spring buckle includes a plurality of circumferentially evenly arranged square plates hinged to the outside of the blade sleeve by a square rod, with the hinge located in the middle of the square plates. A locking block is fixedly installed at the rear end of the square plates near the blade sleeve, and the front end of the square plates away from the blade sleeve is in contact with the corresponding unlocking plate.

[0007] Preferably, the outer side of the mounting cylinder is provided with multiple circumferentially evenly arranged snap-fit ​​grooves, and the locking block is used to cooperate with the snap-fit ​​grooves to lock the blade sleeve and the mounting cylinder.

[0008] Preferably, the outer side of the blade sleeve is radially slidably mounted with a retaining ball corresponding to a square plate via a top extension spring rod, and the retaining ball is located at the front end of the square plate, with the side of the retaining ball away from the blade sleeve in contact with the corresponding square plate.

[0009] Preferably, the outer side of the mounting cylinder has multiple circumferentially evenly arranged locking holes, which are used to cooperate with the insertion rod to lock the blade sleeve in the round hole of the blade removal ring.

[0010] Preferably, the synchronizing component includes a synchronizing ring rotatably mounted on the front end of the blade-removing ring via a connecting block. The synchronizing ring has multiple circumferentially evenly arranged mating holes. A mating rod is slidably installed in the mating holes. The rear end of the mating rod radially slides through the blade-removing ring and is fixedly installed with a synchronizing rod. One end of the synchronizing rod near the center of the circular hole extends radially into the circular hole and is fixedly connected to the corresponding unlocking plate.

[0011] Preferably, a gear ring is fixedly installed on the outer side of the synchronization ring, and an adjustment plate corresponding to the synchronization ring is radially slidably installed at the front end of the tool-removing ring. A rack is fixedly installed at the front end of the adjustment plate, and the rack and the gear ring mesh with each other. An adjustment screw is threadedly connected to the adjustment plate, and the adjustment screw is rotatably connected to the tool-removing ring.

[0012] Preferably, a fixing frame is fixedly installed at the front end of the upper side of the base, and a fixing shaft corresponding to the drive shaft is fixedly installed at the rear end of the fixing frame. The rear end of the fixing shaft is in contact with the drive shaft, and the fixing shaft is rotatably connected to the drive shaft through a connecting shaft.

[0013] Preferably, the outer side of the drive shaft has multiple circumferentially evenly arranged sliding grooves, and the sliding sleeve and the sliding grooves slide in a sliding fit. The outer side of the fixed shaft has multiple sliding grooves corresponding to the sliding grooves. When the sliding sleeve moves forward, the sliding sleeve can move onto the fixed shaft and slide in a sliding fit with the sliding grooves.

[0014] Preferably, the active component includes a transmission ring fixedly mounted on the front end of the sliding sleeve by multiple fixed rods, a rotating ring rotatably mounted on the front end of the transmission ring, and the front end of the rotating ring being connected to an electric push rod fixedly mounted on a fixed frame.

[0015] The beneficial effects of this invention are as follows: First, this invention locks the tool holder onto the cutter head in a detachable manner. When it is necessary to inspect, maintain, or replace the milling cutter on the cutter head, the locking between the tool holder and the cutter head is released, and the tool holder is locked onto the tool removal ring. The tool removal ring drives the tool holder forward, causing the tool holder and its corresponding milling cutter to detach from the cutter head. This allows the operation of removing the specified milling cutter without interrupting the normal operation of the cutter head, significantly improving the continuous operation capability and processing efficiency of the equipment.

[0016] II. This invention uses a spring clip to lock the tool holder inside the mounting cylinder. The tool retrieval ring rotates synchronously with the cutter head under the action of the drive shaft and the sliding sleeve. When it is necessary to remove the milling cutter from the mounting cylinder, the unlocking plate is driven by the synchronizing component to release the spring clip from locking the tool holder and the mounting cylinder. At the same time, the insert rod locks the tool holder in the circular hole of the tool retrieval ring. Then, the driving component is activated to drive the tool retrieval ring forward through the sliding sleeve. The tool retrieval ring moves the tool holder locked in its circular hole out of the mounting cylinder. At the same time, the tool retrieval ring stops rotating with the cutter head. During this process, the disc tool magazine does not need to be stopped and can continue to perform the automatic exchange of milling cutters between itself and the spindle. This allows for the inspection, maintenance, or replacement of milling cutters on the disc tool magazine while the equipment is running continuously.

[0017] Third, this invention uses an adjusting screw to drive an adjusting plate to move radially along the tool-removing ring. The adjusting plate drives a synchronizing ring to rotate via a rack and gear ring. The synchronizing ring and the mating rod work together to drive an unlocking plate to move radially along the circular hole. This unlocking plate releases the spring clip and the insert rod locks the tool sleeve. By controlling the adjusting screws at different positions, multiple milling cutters that need to be inspected, maintained, or replaced can be selectively locked synchronously in the circular hole, and the milling cutters can be removed from the cutter head in batches, further ensuring processing efficiency. Attached Figure Description

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

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0020] Figure 2 This is a three-dimensional structural diagram of the cutter head, mounting cylinder, cutter sleeve, and drive shaft of the present invention.

[0021] Figure 3 This is the present invention. Figure 2 Enlarged view of point A.

[0022] Figure 4 This is a three-dimensional structural diagram of the present invention after removing parts of the mounting cylinder and the blade sleeve.

[0023] Figure 5 This is a three-dimensional structural diagram of the unlocking part and spring buckle after the blade removal ring has been partially removed, according to the present invention.

[0024] Figure 6 This is an exploded view of the tool-removing ring, connecting block, and synchronization ring of the present invention.

[0025] Figure 7 This is a three-dimensional structural diagram of the present invention after removing parts of the fixing frame, fixing shaft, transmission shaft and tool removal ring.

[0026] Figure 8 This is an exploded view of the drive shaft, sliding sleeve, and fixed shaft of the present invention.

[0027] Figure 9 This is an assembly diagram of the tool holder and milling cutter shank of the present invention.

[0028] Reference numerals: 1. Base; 11. Fixing frame; 12. Fixing shaft; 13. Connecting shaft; 2. Disc-shaped tool magazine; 21. Tool disc; 22. Mounting cylinder; 23. Drive shaft; 3. Tool sleeve; 31. Spring buckle; 311. Square rod; 312. Square plate; 313. Locking block; 32. Top extension spring rod; 33. Pressing ball; 4. Drive unit; 41. Sliding sleeve; 42. Connecting rod; 43. Driving component; 431. Transmission ring; 432. Rotating ring; 5. Tool retrieval ring; 51. Adjusting plate; 52. Rack; 53. Adjusting screw; 6. Unlocking unit; 61. Synchronizing component; 611. Connecting block; 612. Synchronizing ring; 613. Matching rod; 614. Synchronizing rod; 615. Gear ring; 62. Unlocking plate; 63. Insertion rod. Detailed Implementation

[0029] The embodiments described below are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. Where no specific technology or conditions are specified in the embodiments, they shall be performed in accordance with the technology or conditions described in the literature in the field or in accordance with the product manual.

[0030] See Figure 1 , Figure 2 and Figure 5 A milling cutter changing device includes a base 1, a disc tool magazine 2 installed on the upper rear end of the base 1, the disc tool magazine 2 includes a cutter disc 21, a plurality of circumferentially evenly arranged mounting cylinders 22 are installed at the front end of the cutter disc 21, a detachable tool sleeve 3 is installed in the mounting cylinder 22, and a tool retrieval ring 5 is installed at the front end of the cutter disc 21 through a drive unit 4, and an unlocking part 6 corresponding to the tool sleeve 3 is installed on the tool retrieval ring 5.

[0031] See Figure 9 It should be noted that the milling cutter, as a cutting execution component, is usually clamped on a standard tool holder (such as the BT series, HSK series, etc.). One end of the tool holder is designed with a tapered surface and a pull stud that match the taper hole of the machine tool spindle, for high-precision rigid connection with the spindle. The tool holder 3, as a storage device for the tool holder, is usually equipped with a locking mechanism such as steel balls and springs (not shown in the figure), for reliably fixing the tool holder in the tool holder 3 when not changing tools, to prevent the milling cutter from falling off when the cutter head 21 rotates. The assembly relationship between the milling cutter, the tool holder and the tool holder 3 is all prior art known in the art, and will not be described in detail in this invention.

[0032] It should be further explained that the disc tool magazine 2 adopts existing technology. The tool head 21 is driven to rotate around its axis by a drive motor (not shown in the figure) built into the disc tool magazine 2, thereby realizing the tool selection action. When a tool change operation is required, the tool head 21 drives the target milling cutter to rotate to the tool change position (the right side position of the tool head 21). Then, the external tool changing device simultaneously removes the milling cutter shank from the spindle taper hole and the target milling cutter shank from the tool holder 3. Next, the tool changing device exchanges the positions of the two shanks. Finally, the shank of the target milling cutter is inserted into the spindle taper hole, and the shank removed from the spindle is placed into the tool holder 3, completing the automatic exchange of milling cutters between the disc tool magazine 2 and the spindle. The cooperation method between the tool changing device, the tool holder 3, and the spindle is all known prior art in the field and will not be described in detail in this invention.

[0033] See Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 7 The blade sheath 3 and the mounting cylinder 22 are locked together by a spring clip 31; the blade-retrieving ring 5 has a circular hole corresponding to the mounting cylinder 22; the unlocking part 6 includes multiple unlocking plates 62 evenly arranged circumferentially installed in the circular hole by a synchronizing member 61; a rod 63 is fixedly installed at the front end of the unlocking plate 62 near the center of the circular hole; multiple locking holes are evenly arranged circumferentially on the outside of the mounting cylinder 22; a drive shaft 23 is fixedly installed at the center of the front end of the blade disc 21; the driving part 4 includes a sliding sleeve 41 that is slidably sleeved on the outside of the drive shaft 23; the sliding sleeve 41 is fixedly connected to the blade-retrieving ring 5 by a connecting rod 42; and an active member 43 is connected between the front end of the sliding sleeve 41 and the base 1.

[0034] The unlocking part 6 can release the spring clip 31 from locking the tool holder 3 and the mounting cylinder 22, and lock the tool holder 3 onto the tool removal ring 5. The drive part 4 drives the tool removal ring 5 forward, so that the tool holder 3 is removed from the mounting cylinder 22. This allows the specified milling cutter to be removed without interrupting the normal operation of the cutter head 21, so that the milling cutter on the cutter head 21 can be inspected, maintained or replaced, which significantly improves the continuous operation capability and processing efficiency of the equipment.

[0035] Specifically, initially, the spring clip 31 locks the tool holder 3 and the mounting cylinder 22 together. When the disc tool magazine 2 performs a tool change operation between itself and the spindle, the tool disc 21 can drive the tool holder 3 to rotate stably to rotate the target milling cutter to the tool change position. At the same time, the tool disc 21 drives the tool picking ring 5 to rotate synchronously through the drive shaft 23, the sliding sleeve 41 and the connecting rod 42, so that the round hole on the tool picking ring 5 and the mounting cylinder 22 are always aligned one by one.

[0036] When a specific milling cutter on the cutter head 21 needs to be inspected, maintained, or replaced, the corresponding synchronous component 61 is first driven to move the unlocking plate 62 inward synchronously. The unlocking plate 62 releases the lock of the spring clip 31. At the same time, the insertion rod 63 is inserted into the locking hole to lock the tool sleeve 3 in the round hole. Then, the active component 43 is activated to drive the tool removal ring 5 forward through the sliding sleeve 41. The tool removal ring 5 drives the tool sleeve 3 out of the mounting cylinder 22, and the sliding sleeve 41 moves out of the drive shaft 23, so that the tool removal ring 5 stops rotating with the cutter head 21. Finally, the milling cutter holder is manually removed from the tool sleeve 3, and the milling cutter is inspected, maintained, or the damaged milling cutter is replaced. At this time, the cutter head 21 can still drive the milling cutter on it to rotate, so that the cutter head 21 can normally perform the tool changing operation between itself and the spindle.

[0037] After the milling cutter has been inspected, maintained, or replaced, the cutter holder is reinstalled into the corresponding tool sleeve 3. Then, the cutter head 21 is rotated so that the round hole on the tool removal ring 5 and the mounting cylinder 22 are aligned. Next, the drive member 43 is activated to move the tool removal ring 5 backward, so that the tool removal ring 5 moves the tool sleeve 3 into the corresponding mounting cylinder 22. At the same time, the sliding sleeve 41 moves to the drive shaft 23 so that the tool removal ring 5 can rotate with the cutter head 21. The unlocking plate 62 is moved outward synchronously through the drive synchronizing member 61. The insertion rod 63 moves out of the locking hole to release the lock on the tool sleeve 3. The spring buckle 31 locks the tool sleeve 3 and the mounting cylinder 22 together, thus completing the inspection, maintenance, or replacement of the milling cutter.

[0038] It should be noted that after the tool-taking ring 5 moves forward, there is a certain distance between the tool-taking ring 5 and the tool disc 21, so as not to interfere with the external tool changing device to perform tool changing operation between the tool disc 21 and the spindle.

[0039] To ensure stability when locking the tool holder 3 and the mounting sleeve 22 together, the present invention adopts the following structure: (See attached diagram) Figure 3 , Figure 4 and Figure 5 The spring clip 31 includes multiple circumferentially evenly arranged square plates 312 hinged to the outside of the blade sleeve 3 by a square rod 311, with the hinge located in the middle of the square plates 312. A locking block 313 is fixedly installed at the rear end of the square plate 312 near the blade sleeve 3, and the front end of the square plate 312 away from the blade sleeve 3 is in contact with the corresponding unlocking plate 62. Multiple circumferentially evenly arranged clip grooves are opened on the outside of the mounting cylinder 22. A retaining ball 33 corresponding to the square plate 312 is radially slidably installed on the outside of the blade sleeve 3 by a top extension spring rod 32, and the retaining ball 33 is located at the front end of the square plate 312, with the side of the retaining ball 33 away from the blade sleeve 3 in contact with the corresponding square plate 312.

[0040] Specifically, when the blade sleeve 3 is inserted into the mounting cylinder 22, the mounting cylinder 22 can limit the rear end of the blade sleeve 3, and the square plate 312, under the action of the clamping ball 33 and the extension spring rod 32, causes the locking block 313 to be engaged in the buckle groove, thereby limiting the blade sleeve 3 in the front-back direction and circumferential direction, so that the blade sleeve 3 and the mounting cylinder 22 are stably locked together. When multiple unlocking plates 62 are driven to move inward synchronously, the unlocking plate 62 presses down on the front end of the square plate 312, causing the square plate 312 to rotate with its hinge point with the square rod 311 as the reference. The square plate 312 compresses the extension spring rod 32 through the clamping ball 33, and the square plate 312 drives the locking block 313 to rotate and move out of the buckle groove, thereby releasing the lock on the blade sleeve 3 and the mounting cylinder 22.

[0041] When the milling cutter is inspected, maintained, or replaced, and the cutter sleeve 3 is reinserted into the mounting cylinder 22, multiple unlocking plates 62 are driven to move outward synchronously. Under the action of the extension spring rod 32, the pressing ball 33 causes the square plate 312 to drive the locking block 313 to be reinserted into the buckle groove, thereby locking the cutter sleeve 3 and the mounting cylinder 22 together again.

[0042] In order to selectively remove multiple milling cutters that need to be inspected, maintained, or replaced from the cutter head 21, the present invention employs the following structure: See [reference] Figure 1 , Figure 5 and Figure 6 The synchronizing component 61 includes a synchronizing ring 612 rotatably mounted on the front end of the tool-retrieving ring 5 via a connecting block 611. The synchronizing ring 612 has multiple circumferentially evenly arranged mating holes. A mating rod 613 is slidably mounted in the mating holes. The rear end of the mating rod 613 radially slides through the tool-retrieving ring 5 and is fixedly mounted with a synchronizing rod 614. One end of the synchronizing rod 614 near the center of the circular hole extends radially into the circular hole and is fixedly connected to the corresponding unlocking plate 62. A gear ring 615 is fixedly mounted on the outer side of the synchronizing ring 612. An adjusting plate 51 corresponding to the synchronizing ring 612 is radially slidably mounted on the front end of the tool-retrieving ring 5. A rack 52 is fixedly mounted on the front end of the adjusting plate 51, and the rack 52 meshes with the gear ring 615. An adjusting screw 53 is threadedly connected to the adjusting plate 51, and the adjusting screw 53 is rotatably connected to the tool-retrieving ring 5.

[0043] Specifically, when it is necessary to inspect, maintain, or replace the milling cutter, the operator first identifies the milling cutter to be removed. Without performing a tool change operation between the cutter head 21 and the spindle, the cutter head 21 is stopped rotating. Then, the adjusting screw 53 is turned to move the adjusting plate 51. The adjusting plate 51, through the rack 52 and gear ring 615, drives the synchronizing ring 612 to rotate. The synchronizing ring 612, through the mating hole and mating rod 613, drives the synchronizing rod 614 to move, causing the synchronizing rod 614 to move the unlocking plate 62 inward synchronously, thereby releasing the lock of the corresponding spring clip 31. When the tool removal ring 5 moves forward, the tool removal ring 5 can simultaneously move the unlocked multiple tool sleeves 3 out of the mounting cylinder 22. Similarly, by turning the adjusting screw 53, the adjusting plate 51 is reset, causing the spring clip 31 to lock the tool sleeves 3 and the mounting cylinder 22 again.

[0044] It should be noted that the synchronous ring 612 can drive the unlocking plate 62 to release the corresponding spring clip 31 from the lock by rotating a small angle. Therefore, the movement of the adjusting plate 51 is small, which allows the operator to quickly release the lock of the spring clip 31 by turning the adjusting screw 53.

[0045] See Figure 1 , Figure 2 , Figure 7 and Figure 8 A fixed frame 11 is fixedly installed on the front end of the upper side of the base 1. A fixed shaft 12 corresponding to the drive shaft 23 is fixedly installed on the rear end of the fixed frame 11. The rear end of the fixed shaft 12 is in contact with the drive shaft 23. The fixed shaft 12 is rotatably connected to the drive shaft 23 through a connecting shaft 13. Multiple circumferentially evenly arranged sliding grooves are opened on the outer side of the drive shaft 23. The sliding sleeve 41 and the sliding grooves are slidably engaged. Multiple sliding grooves corresponding to the sliding grooves are opened on the outer side of the fixed shaft 12. The active component 43 includes a drive ring 431 fixedly installed on the front end of the sliding sleeve 41 by multiple fixed rods. A rotating ring 432 is rotatably installed on the front end of the drive ring 431. The front end of the rotating ring 432 is connected to an electric push rod fixedly installed on the fixed frame 11.

[0046] Specifically, when the sliding sleeve 41 is located outside the transmission shaft 23 and the cutter head 21 rotates, the cutter head 21 drives the tool-retrieving ring 5 to lock synchronously through the sliding groove 1 of the transmission shaft 23 and the sliding sleeve 41. Under the action of the connecting shaft 13, the transmission shaft 23 rotates relative to the fixed shaft 12. When the lock of the spring buckle 31 is released and the tool sleeve 3 needs to be removed from the mounting cylinder 22, the cutter head 21 is first driven to drive the transmission shaft 23 to rotate, so that the sliding groove 1 of the transmission shaft 23 and the sliding groove 2 of the fixed shaft 12 are aligned one by one. Then, the electric push rod is activated to drive the sliding sleeve 41 to move forward through the rotating ring 432, the transmission ring 431 and the fixed rod, so that the sliding sleeve 41 drives the tool-retrieving ring 5 to move forward. The sliding sleeve 41 moves from the sliding groove 1 of the transmission shaft 23 to the sliding groove 2 of the fixed shaft 12. Thus, when the cutter head 21 rotates, the tool-retrieving ring 5 will not rotate with the cutter head 21.

[0047] When the milling cutter is inspected, maintained or replaced, the drive cutter head 21 drives the transmission shaft 23 to rotate, so that the first slide groove of the transmission shaft 23 and the second slide groove of the fixed shaft 12 are aligned again. Then the electric push rod is activated to drive the sliding sleeve 41 to move backward, so that the sliding sleeve 41 moves back to the first slide groove of the transmission shaft 23. At this time, the tool picker ring 5 can rotate synchronously with the cutter head 21 again.

[0048] During the tool changing operation between the disc tool magazine 2 and the spindle in this invention, the tool disc 21 drives the tool sleeve 3 to rotate stably under the drive of the disc tool magazine 2, so as to rotate the target milling cutter to the tool changing position. At the same time, the tool disc 21 drives the tool removal ring 5 to rotate synchronously through the transmission shaft 23, the sliding sleeve 41 and the connecting rod 42, so that the circular hole on the tool removal ring 5 and the mounting cylinder 22 are always aligned. When it is necessary to remove the specified milling cutter for inspection, maintenance or replacement, the corresponding unlocking plate 62 is first driven to move radially inward along the circular hole through the synchronizing component 61. The unlocking plate 62 releases the spring buckle 31 from locking the tool sleeve 3 and the mounting cylinder 22. At the same time, the insertion rod 63 is inserted into the locking hole on the outside of the mounting cylinder 22 to lock the tool sleeve 3 in the tool changing position. The cutter ring 5 is inserted into the circular hole; then the active component 43 is activated to drive the sliding sleeve 41 forward. The sliding sleeve 41 moves from the first sliding groove of the transmission shaft 23 to the second sliding groove of the fixed shaft 12, and drives the cutter ring 5 forward through the connecting rod 42, so that the cutter sleeve 3 locked in the circular hole is removed from the mounting cylinder 22. At this time, the cutter ring 5 stops rotating with the cutter disc 21, while the cutter disc 21 can still drive the other cutter sleeves 3 to rotate, and normally perform the automatic exchange operation of the milling cutter with the spindle; thus, the designated milling cutter can be taken out, inspected, maintained or replaced without interrupting the normal operation of the cutter disc 21, which significantly improves the continuous operation capability and processing efficiency of the equipment and avoids the interruption of the production rhythm caused by stopping to change tools.

[0049] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0050] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0051] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," "installed," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, an integral connection, or a sliding connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0052] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A milling cutter changing device, comprising a base, a disc tool magazine mounted on the upper rear end of the base, the disc tool magazine including a cutter disc, and a plurality of circumferentially evenly arranged mounting cylinders mounted on the front end of the cutter disc, characterized in that, The mounting cylinder contains a detachable blade sleeve, and the front end of the blade disc is equipped with a blade-retrieving ring via a drive unit. The blade-retrieving ring is equipped with an unlocking part that corresponds to the blade sleeve. The blade sleeve and the mounting cylinder are locked together by a spring clip; The blade-removing ring has circular holes that correspond one-to-one with the mounting cylinder. The unlocking part includes multiple unlocking plates that are evenly arranged circumferentially and installed in the circular holes by a synchronizing component. A plug rod is fixedly installed on the front end of the unlocking plate near the center of the circular hole. A drive shaft is fixedly installed at the center of the front end of the cutter head. The drive unit includes a sliding sleeve that is slidably sleeved on the outside of the drive shaft. The sliding sleeve is fixedly connected to the cutter ring by a connecting rod. An active component is connected between the front end of the sliding sleeve and the base. When the cutter head rotates, it drives the tool-retrieving ring to rotate synchronously through the drive shaft. When a specific milling cutter is removed, the corresponding synchronizing component drives the unlocking plate to release the spring latch lock. At the same time, the insert rod locks the tool sleeve in the round hole. Then, the driving component drives the tool-retrieving ring to move forward through the sliding sleeve, so that the tool sleeve moves out of the mounting cylinder. The tool-retrieving ring stops rotating with the cutter head, realizing the inspection, maintenance or replacement of milling cutters without stopping the machine.

2. The milling cutter changing device according to claim 1, characterized in that, The spring clip includes multiple circumferentially evenly arranged square plates hinged to the outside of the blade sleeve by a square rod, with the hinge point located in the middle of the square plate. A locking block is fixedly installed at the rear end of the square plate near the blade sleeve, and the front end of the square plate away from the blade sleeve is in contact with the corresponding unlocking plate.

3. The milling cutter changing device according to claim 2, characterized in that, The outer side of the mounting cylinder has multiple circumferentially evenly arranged snap-fit ​​slots, and the locking block is used to cooperate with the snap-fit ​​slots to lock the tool sleeve and the mounting cylinder.

4. A milling cutter changing device according to claim 2, characterized in that, The outer side of the blade sleeve is radially slidably mounted with a retaining ball corresponding to a square plate via a top extension spring rod. The retaining ball is located at the front end of the square plate, and the side of the retaining ball away from the blade sleeve is in contact with the corresponding square plate.

5. A milling cutter changing device according to claim 1, characterized in that, The outer side of the mounting cylinder has multiple circumferentially evenly arranged locking holes, which are used to cooperate with the insertion rod to lock the blade sleeve in the round hole of the blade removal ring.

6. A milling cutter changing device according to claim 1, characterized in that, The synchronizing component includes a synchronizing ring rotatably mounted on the front end of the blade-removing ring via a connecting block. The synchronizing ring has multiple circumferentially evenly arranged mating holes. A mating rod is slidably installed in the mating holes. The rear end of the mating rod radially slides through the blade-removing ring and is fixedly installed with a synchronizing rod. One end of the synchronizing rod near the center of the circular hole extends radially into the circular hole and is fixedly connected to the corresponding unlocking plate.

7. A milling cutter changing device according to claim 6, characterized in that, A gear ring is fixedly installed on the outer side of the synchronization ring. An adjustment plate corresponding to the synchronization ring is radially slidably installed at the front end of the tool-removing ring. A rack is fixedly installed at the front end of the adjustment plate, and the rack and the gear ring mesh with each other. An adjustment screw is threadedly connected to the adjustment plate, and the adjustment screw is rotatably connected to the tool-removing ring.

8. A milling cutter changing device according to claim 1, characterized in that, A fixing frame is fixedly installed at the front end of the upper side of the base, and a fixing shaft corresponding to the drive shaft is fixedly installed at the rear end of the fixing frame. The rear end of the fixing shaft is in contact with the drive shaft, and the fixing shaft is rotatably connected to the drive shaft through a connecting shaft.

9. A milling cutter changing device according to claim 8, characterized in that, The outer side of the drive shaft has multiple circumferentially evenly arranged sliding grooves. The sliding sleeve and the sliding grooves are slidably engaged. The outer side of the fixed shaft has multiple sliding grooves corresponding to the sliding grooves. When the sliding sleeve moves forward, the sliding sleeve can move onto the fixed shaft and slidably engage with the sliding grooves.

10. A milling cutter changing device according to claim 8, characterized in that, The active component includes a transmission ring fixedly mounted on the front end of the sliding sleeve by multiple fixed rods. A rotating ring is rotatably mounted on the front end of the transmission ring, and the front end of the rotating ring is connected to an electric push rod fixedly mounted on a fixed frame.

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