Blade-replaceable milling cutter disc based on elastic clamping

Abstract

The invention relates to the technical field of milling cutter discs, in particular to a blade-replaceable milling cutter disc based on elastic clamping. Comprising a milling cutter disc, a fixing ring is fixedly installed on the inner wall of the milling cutter disc, a plurality of cutters are installed on the outer wall of the milling cutter disc, the milling cutter disc further comprises fastening structures and cooling structures, a plurality of fastening structures and cooling structures are installed in the milling cutter disc, and the positions of the fastening structures and the cooling structures correspond to the positions of the cutters. Through the arrangement of the fastening structure, centrifugal force generated when the milling cutter disc rotates at a high speed can be utilized, the centrifugal force is converted into extrusion of the conical clamping body to the elastic rubber, so that the elastic rubber fixes the cutter through the second connecting body, and the larger the centrifugal force generated when the milling cutter disc rotates is, the larger the cutter disc rotates. And the fixing effect of the cutting knife is better.

Description

Technical Field

[0001] This invention relates to the field of milling cutter head technology, and more particularly to a changeable-edge milling cutter head based on elastic clamping. Background Technology

[0002] A disc milling cutter is a disc-shaped milling cutter mainly used for milling large flat surfaces. Its characteristic is that multiple replaceable inserts are mounted on the cutter head, and high-efficiency machining is achieved by having multiple cutting edges participate in cutting simultaneously.

[0003] In existing technologies, most cutting inserts on milling cutter heads are installed via threaded connections. However, replacing threaded inserts is inconvenient, and when many inserts need to be replaced, it takes a lot of time. Therefore, some milling cutter heads use elastic clamping to connect with the inserts, thereby improving the efficiency of insert replacement. Although elastic clamping offers better convenience for insert replacement, it significantly reduces the stability of the inserts mounted on the milling cutter head. At the same time, the milling cutter head rotates at high speed during operation, generating a large centrifugal force. The elastic clamping structure on the milling cutter head will weaken its clamping stability on the inserts due to the centrifugal force. Summary of the Invention

[0004] In order to overcome the shortcomings mentioned in the background art, the present invention provides a replaceable cutting edge milling cutter head based on elastic clamping.

[0005] The technical solution of the present invention is: a changeable-edge milling cutter disc based on elastic clamping, comprising a milling cutter disc, a fixing ring fixedly installed on the inner wall of the milling cutter disc, a plurality of cutting blades installed on the outer wall of the milling cutter disc, and further comprising a confinement structure and a cooling structure. The milling cutter disc contains a plurality of confinement structures and a plurality of cooling structures, the positions of which correspond to the positions of the plurality of cutting blades. The confinement structure includes a first connecting body, a first connecting body fixedly connected to one side of the cutting blades, a second connecting body installed on one side of the first connecting body, and a conical clamping body snapped into the second connecting body, the conical clamping body being slidably connected to the inner wall of the milling cutter disc.

[0006] Furthermore, the confinement structure also includes a first wedge block. The first wedge block, which is slidably connected to the inner wall of the milling cutter disc, is fixed to one side of the conical clamping body, and a first spring is symmetrically fixed to the same side. The first spring is fixed to the inner wall of the milling cutter disc.

[0007] Furthermore, the confinement structure also includes elastic rubber, and a plurality of conical openings are provided on one side of the second connector, and elastic rubber is fixedly installed in each of the plurality of conical openings, and the plurality of elastic rubbers can cooperate with the conical clamp.

[0008] Furthermore, the confinement structure also includes a second wedge block, and a plurality of second wedge blocks are slidably connected to the inner wall of the milling cutter disc. The position of the second wedge block corresponds to that of the first wedge block, and a second spring is symmetrically connected between one side of the second wedge block and the inner wall of the milling cutter disc.

[0009] Furthermore, it also includes a first rectangular bayonet, and the milling cutter disc has a first rectangular bayonet at each of the several cutting cutters. The first connecting body and the second connecting body are both located within the first rectangular bayonet. The confinement structure also includes a rotating shaft, and the first connecting body and the second connecting body are rotatably connected by the rotating shaft.

[0010] Furthermore, it also includes a second rectangular slot, and the milling cutter disc has several second rectangular slots inside, the positions of which correspond to several elastic rubbers.

[0011] Furthermore, the confinement structure also includes a sliding plate. The top of the milling cutter disc has several grooves and several slots communicating with the grooves. The top of the second wedge block is slidably connected to the sliding plate. The end of the sliding plate away from the second wedge block passes through the milling cutter disc and slides within the groove.

[0012] Furthermore, the cooling structure includes a liquid storage block, and several liquid storage blocks are fixedly connected inside the milling cutter disc. One end of each liquid storage block is slidably connected to a compression block through a limiting connection. One end of the compression block is fixedly connected to a second wedge block. A flow pipe is connected to the top of the liquid storage block. One end of the flow pipe passes through the milling cutter disc and is fixedly connected to a rectangular nozzle. The position of the rectangular nozzle corresponds to the position of the cutting tool.

[0013] Furthermore, the cooling structure also includes a connecting pipe. The end of the liquid storage block away from the extrusion block is connected to the connecting pipe. One end of the connecting pipe passes through the milling cutter disc and the fixed ring, and is fixedly connected to a connecting ring. The connecting ring is fixedly connected to the fixed ring. The top of the connecting ring is rotatably connected to a rotating ring. The rotating ring is rotatably connected to the fixed ring. Several connectors are fixedly connected to the inner wall of the rotating ring.

[0014] The beneficial effects of this invention are: 1. By setting up a confinement structure, this invention can utilize the centrifugal force generated when the milling cutter disc rotates at high speed. The centrifugal force is transformed into the compression of the elastic rubber by the conical clamp, thereby fixing the cutting tool through the second connector. The greater the centrifugal force generated by the rotation of the milling cutter disc, the better the fixing effect of the cutting tool.

[0015] 2. The present invention is provided with a cooling structure. The extrusion block in the cooling structure can further drive the second wedge block to extrude the first wedge block. At the same time, it can also make the second wedge block extrude the first wedge block more stably. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the second connector of the present invention; Figure 3 This is a schematic diagram of the structure of the elastic rubber of the present invention; Figure 4 This is a schematic diagram of the structure of the second wedge block of the present invention; Figure 5 This is an exploded view of the confinement structure of the present invention; Figure 6 This is a schematic diagram of the liquid storage block of the present invention; Figure 7 This is a cross-sectional view of the liquid storage block of the present invention; Figure 8 For the present invention Figure 1 Enlarged view of point A in the image.

[0017] In the attached figures, the following are the reference numerals: 1-milling cutter head, 101-first rectangular bayonet, 102-second rectangular bayonet, 103-slide groove, 104-slot, 2-fixed ring, 3-cutting cutter, 401-first connecting body, 402-second connecting body, 403-rotating shaft, 404-elastic rubber, 405-conical opening, 501-conical clamping body, 502-first wedge block, 503-first spring, 601-second wedge block, 602-second spring, 7-sliding clamping plate, 801-liquid storage block, 802-squeezing block, 803-flow pipe, 804-rectangular nozzle, 805-connecting pipe, 901-rotating ring, 902-connector, 903-connecting ring. Detailed Implementation

[0018] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0019] A type of interchangeable-edge end mill disc based on elastic clamping, such as Figures 1-8 As shown, the device includes a milling cutter disc 1, a fixing ring 2 fixedly installed on the inner wall of the milling cutter disc 1, and several cutting blades 3 installed on the outer wall of the milling cutter disc 1. It also includes a confinement structure and a cooling structure. Several confinement structures and cooling structures are installed inside the milling cutter disc 1. The positions of the several confinement structures and several cooling structures correspond to the several cutting blades 3. The confinement structure includes a first connecting body 401. The first connecting body 401 is fixedly connected to one side of the cutting blade 3. A second connecting body 402 is installed on one side of the first connecting body 401. A conical retainer 501 is snapped into the second connecting body 402. The conical retainer 501 is slidably connected to the inner wall of the milling cutter disc 1.

[0020] The confinement structure also includes a first wedge block 502. The first wedge block 502, which is slidably connected to the inner wall of the milling cutter disk 1, is fixed to the upper part of one side of the conical clamping body 501, and a first spring 503 is symmetrically fixed to the lower part of the same side. The first spring 503 is fixed to the inner wall of the milling cutter disk 1.

[0021] The confinement structure also includes elastic rubber 404. Several conical openings 405 are provided on one side of the second connector 402. Elastic rubber 404 is fixedly installed in each of the several conical openings 405. The elastic rubber 404 and the conical openings 405 can cooperate with the conical clamp 501.

[0022] The confinement structure also includes a second wedge block 601. Several second wedge blocks 601 are slidably connected to the inner wall of the milling cutter disk 1. The position of the second wedge block 601 corresponds to the first wedge block 502. A second spring 602 is symmetrically connected between one side of the second wedge block 601 and the inner wall of the milling cutter disk 1.

[0023] It also includes a first rectangular bayonet 101. The milling cutter disc 1 has a first rectangular bayonet 101 at each of the several cutting cutters 3. The first connecting body 401 and the second connecting body 402 are both located in the first rectangular bayonet 101. The first rectangular bayonet 101 can restrict the first connecting body 401 and the second connecting body 402 to prevent the first connecting body 401 and the second connecting body 402 from rotating. The restraining structure also includes a rotating shaft 403, and the first connecting body 401 and the second connecting body 402 are rotatably connected by the rotating shaft 403.

[0024] It also includes a second rectangular bayonet 102. The milling cutter disc 1 has several second rectangular bayonet 102s inside, and the positions of the several second rectangular bayonet 102s correspond to several elastic rubbers 404s.

[0025] The confinement structure also includes a sliding plate 7. The top of the milling cutter disc 1 has several grooves 103 and several slots 104 communicating with the grooves 103. The number and position of the grooves 103 and slots 104 correspond to the cutting cutter 3. The top of the second wedge block 601 is slidably connected to the sliding plate 7. The end of the sliding plate 7 away from the second wedge block 601 passes through the milling cutter disc 1 and slides within the grooves 103.

[0026] Initially, the sliding plate 7 is located in the slot 104, with the bottom part of the sliding plate 7 resting on the second wedge block 601, while the other part is not. The second spring 602 is compressed, preventing the second wedge block 601 from sliding. First, the cutting tool 3 is installed on the milling cutter disc 1. The operator holds the cutting tool 3 and inserts the first connecting body 401 and the second connecting body 402 into the first rectangular slot 101. The first rectangular slot 101 prevents the first connecting body 401 and the second connecting body 402 from rotating. The installation of the cutting tool 3 is now complete. Then, the operator manually moves the sliding plate 7 towards the second wedge block 601, causing the sliding plate 7 to disengage from the slot 104. At this point, the second spring 602 is no longer restricted and begins to release, pushing the second wedge block 601 towards the first wedge block 502. The sliding plate 7 slides within the groove 103, and the second wedge block 601 presses against the first wedge block 502, causing... The first wedge block 502 drives the conical clamp 501 to slide toward the second connector 402, causing the conical clamp 501 to insert into the conical opening 405. At this time, the first spring 503 is stretched by force, and the conical clamp 501 will squeeze the elastic rubber 404 in the conical opening 405, causing the elastic rubber 404 to deform. At the same time, the end of the elastic rubber 404 away from the conical clamp 501 will be squeezed out in the conical opening 405 due to the squeezing effect, and then squeezed into the second rectangular opening 102. Thus, there is an elastic rubber 404 between the conical clamp 501 and the conical opening 405, and an elastic rubber 404 between the conical opening 405 and the second rectangular opening 102. The elastic rubber 404 can limit the position of the second connector 402 through its own friction and cooperation with the conical clamp 501 and the second rectangular opening 102, thereby keeping the position of the second connector 402 stable. After the cutting tool 3 is installed, the milling cutter disc 1 is installed on the milling machine through the retaining ring 2. The milling machine can drive the milling cutter disc 1 to rotate through the retaining ring 2, thereby driving the cutting tool 3 to rotate, so as to perform cutting work. The milling machine controls the milling cutter head 1 to rotate at high speed. At this time, the milling cutter head 1 experiences significant centrifugal force, which affects the second wedge block 601. Under the influence of this centrifugal force, the second wedge block 601 moves further towards the first wedge block 502, further compressing it. This causes the conical clamping body 501 to further compress the elastic rubber 404, leading to continued deformation of the elastic rubber 404. Ultimately, this increases the contact area between the conical clamping body 501 and the elastic rubber 404. The increased contact area between the elastic rubber 404 and the second rectangular latch 102, and the increased contact area between the elastic rubber 404 and the conical latch 501 and the second rectangular latch 102 and the elastic rubber 404, further increases the friction between the conical latch 501 and the second rectangular latch 102 and the elastic rubber 404, thereby further limiting the position of the second connecting body 402 and making the position of the second connecting body 402 more stable. It should be noted that the greater the centrifugal force generated when the milling cutter disc 1 rotates, the greater the compressive force on the elastic rubber 404, the greater the deformation of the elastic rubber 404, and the greater the friction between the elastic rubber 404 and the conical latch 501 and the second rectangular latch 102. At the same time, in the above working process, it should be noted that the elastic force of the second spring 602 is greater than the elastic force of the first spring 503. The release of the second spring 602 pushes the first wedge block 502 to move through the second wedge block 601, and the first spring 503 is stretched. When the second spring 602 is fully released, the first spring 503 is also stretched to a certain extent. At this time, the elastic force of the first spring 503 in the stretched state is still less than that of the second spring 602. 02. The first spring 503 cannot move in the opposite direction by its own elastic force, thus causing the second spring 602 to contract. When the milling cutter 1 rotates and generates centrifugal force, the released second spring 602 will be further stretched and extended. At this time, the second wedge block 601 moves further by relying on centrifugal force and further pushes the first wedge block 502 to move. The elastic rubber 404 will also be subjected to more compressive force, and the limitation of the second connecting body 402 will be more stable. At the same time, it can also make the second wedge block 601 stably compress the first wedge block 502. When the cutting tool 3 needs to be replaced, or when one of the cutting edges of the cutting tool 3 becomes unusable and the cutting edge on the cutting tool 3 needs to be replaced, the cutting operation of the milling cutter disc 1 is stopped, causing the milling cutter disc 1 to stop rotating. After the milling cutter disc 1 has completely stopped rotating, the operator manually moves the sliding plate 7, causing the sliding plate 7 to move towards the fixed ring 2. The sliding plate 7 slides within the groove 103, and drives the second wedge block 601 to slide synchronously. The second wedge block 601 slides away from the first wedge block 502 and no longer presses against the first wedge block 502. 02. Simultaneously, when the second spring 602 is compressed and the first wedge block 502 is no longer compressed, the first spring 503 is released, causing the first wedge block 502 to reset. The first wedge block 502 causes the conical locking body 501 to move away from the elastic rubber 404 and reset, and disengage from the conical opening 405, and no longer compresses the elastic rubber 404. The elastic rubber 404 can reset through its own elasticity, so that the elastic rubber 404 no longer extends into the second rectangular slot 102, and the elastic rubber 404 no longer limits the second connecting body 402. At this point, the cutting tool 3 can be manually removed from the milling cutter head 1. The first connecting body 401 and the second connecting body 402 will disengage from the first rectangular bayonet 101. Then, hold the second connecting body 402 and rotate the cutting tool 3. Because of holding the second connecting body 402 and the rotating shaft 403, when rotating the cutting tool 3, the cutting tool 3 will only drive the first connecting body 401 to move synchronously. Then, the rotated cutting tool 3 can be reinstalled on the milling cutter head 1. This allows the cutting edge of the cutting tool 3 to be replaced, ensuring that the cutting tool 3 is in good working order. The cutting blade performs cutting operations. At the same time, after the cutting blade 3 is removed from the milling cutter disc 1, it can also be directly replaced by installing the new cutting blade 3 onto the milling cutter disc 1. It is worth noting that when the sliding plate 7 slides in the groove 103, the sliding plate 7 will slide to the position corresponding to the groove 104. At this time, the operator manually moves the sliding plate 7 so that the sliding plate 7 slides into the groove 104. This allows the sliding plate 7 to limit the second wedge block 601 through the groove 104, and the second wedge block 601 cannot slide at this time.

[0027] The cooling structure includes a liquid storage block 801. Several liquid storage blocks 801 are fixedly connected inside the milling cutter disc 1. The number and position of the liquid storage blocks 801 correspond to the cutting cutter 3. One end of the liquid storage block 801 is connected to a compression block 802 through a limiting sliding connection. One end of the compression block 802 is fixedly connected to a second wedge block 601. The top of the liquid storage block 801 is connected to a flow pipe 803. One end of the flow pipe 803 passes through the milling cutter disc 1 and is fixedly connected to a rectangular nozzle 804. The position of the rectangular nozzle 804 corresponds to the position of the cutting cutter 3.

[0028] The cooling structure also includes a connecting pipe 805. The end of the liquid storage block 801 away from the extrusion block 802 is connected to the connecting pipe 805. The diameter of the connecting pipe 805 is larger than the diameter of the flow pipe 803. One end of the connecting pipe 805 passes through the milling cutter disc 1 and the fixed ring 2, and is fixedly connected to the connecting ring 903. The connecting ring 903 is fixedly connected to the fixed ring 2. The top of the connecting ring 903 is rotatably connected to the rotating ring 901. The rotating ring 901 is rotatably connected to the fixed ring 2. Several connectors 902 are fixedly connected to the inner wall of the rotating ring 901. The rotating ring 901 and the connecting ring 903 form a rotating joint.

[0029] When the milling cutter head 1 is installed on the milling machine, the cooling mechanism on the milling machine that can discharge coolant is connected to the connector 902, and the fixing mechanism on the milling machine is connected to the fixing ring 2. Then, the cooling mechanism on the milling machine injects coolant into the rotating ring 901 through the connector 902. The coolant enters the connecting pipe 805 through the rotating ring 901 and the connecting ring 903 forming a rotating joint, and then enters the reservoir block 801 through the connecting pipe 805, and squeezes the extrusion block 802. When the sliding plate 7 limits the second wedge block 601 through the slot 104, the extrusion block 802 does not move and blocks the flow pipe 803. When the sliding plate 7 no longer limits the second wedge block 601, the coolant squeeze block 802 slides inside the reservoir block 801. At this time, the squeeze block 802 moves away from the connecting pipe 805. The squeeze block 802 drives the second wedge block 601 to move synchronously. At this time, the second wedge block 601 slides towards the first wedge block 502. The second wedge block 601 is subjected to the force of the second spring 602 and the squeeze block 802 at the same time, which enables the second wedge block 601 to move a further distance. The second wedge block 601 will further squeeze the first wedge block 502, and the elastic rubber 404 will also be further squeezed. After the coolant squeeze block 802 slides, the squeeze block 802 no longer blocks the flow pipe 803. At this time, the coolant will flow through the flow pipe 803 to the rectangular nozzle 804 and spray onto the cutting tool 3 through the rectangular nozzle 804 to cool the cutting tool 3. It should be noted that since the diameter of the connecting pipe 805 is larger than the diameter of the flow pipe 803, more coolant enters the reservoir block 801 than coolant exits from the reservoir block 801. This will keep the reservoir block 801 under high pressure. This high pressure will keep pushing the squeeze block 802, so that the second wedge block 601 can squeeze the first wedge block 502 more stably. When the extrusion block 802 needs to be reset, the operator shuts off the cooling mechanism on the milling machine. The rectangular nozzle 804 stops spraying coolant. When the sliding plate 7 drives the second wedge block 601 to reset, the second wedge block 601 drives the extrusion block 802 to reset synchronously. At this time, the extrusion block 802 slides in the liquid storage block 801 toward the connecting pipe 805. Finally, the sliding plate 7 is engaged in the slot 104, the second wedge block 601 completes the reset and stops moving, the extrusion block 802 completes the reset, and the flow pipe 803 is blocked.

[0030] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A changeable-edge milling cutter disc based on elastic clamping, comprising a milling cutter disc (1), wherein a retaining ring (2) is fixedly installed on the inner wall of the milling cutter disc (1), and a plurality of cutting blades (3) are installed on the outer wall of the milling cutter disc (1), characterized in that, It also includes a confinement structure and a cooling structure. Several confinement structures and cooling structures are installed inside the milling cutter disc (1). The positions of the several confinement structures and cooling structures correspond to several cutting tools (3). The confinement structure includes a first connecting body (401). The first connecting body (401) is fixed to one side of the cutting tool (3). A second connecting body (402) is installed on one side of the first connecting body (401). A conical clamping body (501) is snapped into the second connecting body (402). The conical clamping body (501) is slidably connected to the inner wall of the milling cutter disc (1).

2. The interchangeable-edge end mill disc based on elastic clamping according to claim 1, characterized in that: The confinement structure also includes a first wedge block (502), and the first wedge block (502) is fixedly connected to the inner wall of the milling cutter disc (1) on one side of the conical clamping body (501), and a first spring (503) is symmetrically fixedly connected to the same side. The first spring (503) is fixedly connected to the inner wall of the milling cutter disc (1).

3. A changeable-edge end mill disc based on elastic clamping according to claim 2, characterized in that: The confinement structure also includes elastic rubber (404), and a plurality of conical openings (405) are provided on one side of the second connector (402). Elastic rubber (404) is fixedly installed in each of the plurality of conical openings (405), and the plurality of elastic rubber (404) can cooperate with the conical clamp (501).

4. A changeable-edge end mill disc based on elastic clamping according to claim 3, characterized in that: The confinement structure also includes a second wedge block (601). Several second wedge blocks (601) are slidably connected to the inner wall of the milling cutter disc (1). The position of the second wedge block (601) corresponds to that of the first wedge block (502). A second spring (602) is symmetrically connected between one side of the second wedge block (601) and the inner wall of the milling cutter disc (1).

5. A changeable-edge end mill disc based on elastic clamping according to claim 4, characterized in that: It also includes a first rectangular bayonet (101), and the milling cutter disc (1) is provided with a first rectangular bayonet (101) at each of the several cutting cutters (3). The first connecting body (401) and the second connecting body (402) are both located in the first rectangular bayonet (101). The confinement structure also includes a rotating shaft (403), and the first connecting body (401) and the second connecting body (402) are rotatably connected by the rotating shaft (403).

6. A changeable-edge end mill disc based on elastic clamping according to claim 5, characterized in that: It also includes a second rectangular slot (102), and the milling cutter disc (1) has several second rectangular slots (102) inside, and the positions of the several second rectangular slots (102) correspond to several elastic rubbers (404).

7. A changeable-edge end mill disc based on elastic clamping according to claim 6, characterized in that: The confinement structure also includes a sliding plate (7). The top of the milling cutter disc (1) has several grooves (103) and several slots (104) that communicate with the grooves (103). The top of the second wedge block (601) is slidably connected to the sliding plate (7). The end of the sliding plate (7) away from the second wedge block (601) passes through the milling cutter disc (1) and slides in the groove (103).

8. A changeable-edge end mill disc based on elastic clamping according to claim 7, characterized in that: The cooling structure includes a liquid storage block (801). Several liquid storage blocks (801) are fixedly connected inside the milling cutter disc (1). One end of the liquid storage block (801) is connected to a compression block (802) through a limiting sliding connection. One end of the compression block (802) is fixedly connected to a second wedge block (601). The top of the liquid storage block (801) is connected to a flow pipe (803). One end of the flow pipe (803) passes through the milling cutter disc (1) and is fixedly connected to a rectangular nozzle (804). The position of the rectangular nozzle (804) corresponds to the position of the cutting tool (3).

9. A changeable-edge end mill disc based on elastic clamping according to claim 8, characterized in that: The cooling structure also includes a connecting pipe (805). The end of the liquid storage block (801) away from the extrusion block (802) is connected to the connecting pipe (805). One end of the connecting pipe (805) passes through the milling cutter disc (1) and the fixed ring (2) and is fixedly connected to the connecting ring (903). The connecting ring (903) is fixedly connected to the fixed ring (2). The top of the connecting ring (903) is rotatably connected to the rotating ring (901). The rotating ring (901) is rotatably connected to the fixed ring (2). The inner wall of the rotating ring (901) is fixedly connected to several connectors (902).

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