Rotary milling cutter disc capable of adjusting diameter

Abstract

The invention relates to the technical field of milling cutters, in particular to a diameter-adjustable rotary milling cutter disc which comprises a cutter holder, a cutter disc body is fixedly connected to the lower surface of the cutter holder, a plurality of sliding grooves are evenly formed in the edge of the cutter disc body in the circumferential direction, sliding blocks are slidably connected to the inner sides of the sliding grooves, and blades are fixedly installed on the side walls of the sliding blocks through bolts. The upper surface of the cutterhead is provided with an adjusting assembly for adjusting the position of the sliding block, and a limiting assembly is arranged on the upper surface of the cutterhead and located on one side of the adjusting assembly. A first bevel gear is rotated to be meshed with a plurality of second bevel gears, all threaded rods are driven to synchronously rotate, the threaded rods are matched with threaded holes of guide blocks, sliding blocks are pushed to move in the radial direction of sliding grooves during rotation, and therefore the cutting diameter of blades is adjusted, all the threaded rods are driven by the same first bevel gear, it is ensured that the adjusting amount of all the blades is consistent, and the cutting efficiency is improved. And the machining concentricity is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of milling cutters, in particular to a rotary milling cutter disc capable of adjusting its diameter. Background Art

[0002] A milling cutter is a rotary cutting tool used for milling, widely used in machinery manufacturing, mold processing, metalworking, and other fields. Its main feature is that it uses a multi-edge structure (multiple cutting teeth) to remove material at high speed, thereby machining various shapes such as planes, grooves, steps, and complex curved surfaces on the workpiece.

[0003] In milling cutters, the inserts are typically bolted to a toolholder, which is mounted on a toolholder. Multiple inserts are arranged in a circular array to achieve efficient cutting. However, due to the rigid connection between the insert and the toolholder, this fixed mounting method cannot dynamically adjust the insert extension (i.e., the effective cutting diameter) according to machining requirements, affecting machining accuracy and adaptability. Summary of the Invention

[0004] In response to the problems in the prior art, the present invention provides a rotary milling cutter disc with adjustable diameter, which solves the problem in the prior art that the blade and the cutter seat are rigidly connected during use, and the blade extension (i.e., the effective cutting diameter) cannot be dynamically adjusted according to processing requirements, affecting processing accuracy and adaptability.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a rotary milling cutter disc with adjustable diameter, including a cutter seat, a cutter disc is fixedly connected to the lower surface of the cutter seat, a plurality of sliding grooves are evenly opened at the edge of the cutter disc along the circumferential direction, a slider is slidingly connected to the inner side of the sliding groove, a blade is fixedly installed on the side wall of the slider by bolts, an adjustment component for adjusting the position of the slider is provided on the upper surface of the cutter disc, and a limit component is provided on the upper surface of the cutter disc on one side of the adjustment component.

[0006] Specifically, the lower end of the circumferential outer wall of the tool holder is rotatably connected to a first bevel gear.

[0007] Specifically, a guide block is fixedly connected to one side of the upper surface of the sliding block, and a threaded hole is opened in the middle of the guide block.

[0008] Specifically, the adjustment assembly includes a plurality of blocks fixedly installed at the edge of the upper surface of the cutter disc corresponding to the number of slide grooves, the side wall of the block is rotatably connected to a threaded rod, the threaded rod passes through and cooperates with the threaded hole, and the end of the threaded rod away from the block is fixedly connected to a second bevel gear, and the second bevel gear is meshed with the first bevel gear.

[0009] Specifically, the limit assembly includes a first clamping block fixedly connected to the upper surface of the cutter disc and located below the threaded rod, guide rods are symmetrically fixedly connected to the upper surface of the first clamping block on both sides, and the two guide rods are slidably connected to the second clamping block on the outer circumference of the two guide rods, the upper surface of the guide rod is fixedly connected to the limit block, and the outer circumference of the guide rod is located between the limit block and the second clamping block and is provided with a spring, the middle part of the upper surface of the second clamping block is fixedly connected to the connecting rod, and the upper surface of the connecting rod is fixedly connected to the limit ring.

[0010] Specifically, the first clamping block and the second clamping block are both provided with a semicircular groove adapted to the threaded rod, and a rubber pad is fixedly installed inside the semicircular groove.

[0011] Specifically, two cylinders are symmetrically arranged below the limiting ring, the lower surface of the cylinder is fixedly connected to the upper surface of the cutter disc, and the output end of the cylinder is fixedly connected to the lower surface of the limiting ring.

[0012] Specifically, a mounting ring is fixedly connected to the upper surface of the first bevel gear, a plurality of first placement grooves are provided on the circumferential outer wall of the mounting ring, a plurality of second placement grooves corresponding to the number of placement grooves and connected to each other are provided on the upper surface of the mounting ring, a blade is slidably connected to the inner side of the first placement groove, and a first trapezoidal block is slidably connected to the inner side of the second placement groove.

[0013] Specifically, the first trapezoidal block is fixedly connected to the blade.

[0014] Specifically, the first trapezoidal block is slidably connected to the second trapezoidal block, an L-shaped rod is fixedly connected to the upper surface of the second trapezoidal block, and a round rod is fixedly connected to the bottom of the L-shaped rod in the vertical direction.

[0015] Specifically, a locking groove is provided on the upper surface of the limiting ring, and the round rod is slidably connected to the locking groove.

[0016] Beneficial effects of the present invention: (1) The present invention describes a rotary milling cutter disc capable of adjusting the diameter. The present application drives all threaded rods to rotate synchronously by rotating a first bevel gear, which meshes with a plurality of second bevel gears. The threaded rods cooperate with the threaded holes of the guide blocks, and when rotating, push the slider to move radially along the slide groove, thereby adjusting the cutting diameter of the blade. All threaded rods are driven by the same first bevel gear to ensure that the adjustment amount of each blade is consistent, thereby ensuring the concentricity of the processing.

[0017] (2) The present invention describes a rotary milling cutter disc capable of adjusting the diameter. In this application, during the rotation of the cutter disc, the cylinder is started, and the output end of the cylinder drives the limit ring to move upward, and the limit ring drives the connecting rod and the second clamping block to move. At this time, the second clamping block and the first clamping block are separated from each other, that is, the restriction on the threaded rod is released. At the same time, during the movement of the limit ring, the second trapezoidal block, the L-shaped rod and the round rod are driven to move upward, and the gap between the second trapezoidal block and the first trapezoidal block is controlled by the height of the cylinder rise. When a gap is generated between the second trapezoidal block and the first trapezoidal block, the blade is thrown out under the action of centrifugal force. Due to the principle of wind resistance, the blade will slow down the rotation speed of the mounting ring, that is, the mounting ring and the cutter seat will rotate relative to each other. At this time, the mounting ring can drive the first bevel gear to rotate, thereby realizing dynamic adjustment of the blade. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the slider and the blade separated from the cutter disc of the present invention; Figure 3 This is a schematic diagram of the structure in which the mounting ring and the first bevel gear are separated from the cutter seat according to the present invention; Figure 4 For the present invention Figure 3 A in the middle is an enlarged structural diagram; Figure 5 For the present invention Figure 3 The enlarged structural diagram at B in the middle; Figure 6 It is a partial structural diagram of the present invention; In the figure: 1. tool holder; 11. first bevel gear; 2. tool disc; 21. slide groove; 3. slider; 31. guide block; 311. threaded hole; 4. blade; 51. stop block; 52. threaded rod; 53. second bevel gear; 61. first clamping block; 62. guide rod; 63. second clamping block; 64. limit block; 65. spring; 66. connecting rod; 67. limit ring; 671. locking groove; 68. semicircular groove; 681. rubber pad; 69. cylinder; 71. mounting ring; 72. first placement groove; 73. second placement groove; 74. blade; 75. first trapezoidal block; 76. second trapezoidal block; 77. L-shaped rod; 78. round rod. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0021] like Figures 1-6As shown, a rotary milling cutter disc capable of adjusting the diameter of the present invention includes a cutter seat 1, a cutter disc 2 is fixedly connected to the lower surface of the cutter seat 1, a plurality of slide grooves 21 are evenly opened at the edge of the cutter disc 2 along the circumferential direction, a slider 3 is slidably connected to the inner side of the slide groove 21, a blade 4 is fixedly installed on the side wall of the slider 3 by bolts, an adjustment component for adjusting the position of the slider 3 is provided on the upper surface of the cutter disc 2, and a limiting component is provided on the upper surface of the cutter disc 2 on one side of the adjustment component.

[0022] Furthermore, the lower end of the circumferential outer wall of the tool holder 1 is rotatably connected to a first bevel gear 11 .

[0023] Furthermore, a guide block 31 is fixedly connected to one side of the upper surface of the sliding block 3 , and a threaded hole 311 is formed in the middle of the guide block 31 .

[0024] Furthermore, the adjustment assembly includes a plurality of blocks 51 fixedly mounted on the edge of the upper surface of the cutter disc 2 and corresponding to the number of the slide grooves 21. The side wall of the block 51 is rotatably connected to a threaded rod 52, and the threaded rod 52 passes through the threaded hole 311 and cooperates with it. The end of the threaded rod 52 away from the block 51 is fixedly connected to a second bevel gear 53, and the second bevel gear 53 is meshed with the first bevel gear 11.

[0025] During operation, after the tool holder 1 is fixed at a preset position, the processing machine drives the tool holder 1 to rotate and move to a suitable position. The rotation of the tool holder 1 drives the cutter disc 2 to rotate, and the workpiece is processed by the blade 4.

[0026] When the cutting diameter of the blade 4 needs to be adjusted, the staff rotates the first bevel gear 11, which engages with multiple second bevel gears 53, driving all the threaded rods 52 to rotate synchronously. The threaded rods 52 cooperate with the threaded holes 311 of the guide block 31, and push the slider 3 to move radially along the slide groove 21 during rotation, thereby adjusting the cutting diameter of the blade 4. All threaded rods 52 are driven by the same first bevel gear 11 to ensure that the adjustment amount of each blade is consistent and the processing concentricity is guaranteed.

[0027] Furthermore, the limiting assembly includes a first clamping block 61 fixedly connected to the upper surface of the cutter disc 2 and located below the threaded rod 52, and guide rods 62 are symmetrically fixedly connected to the two sides of the upper surface of the first clamping block 61, and the two guide rods 62 are slidably connected to the second clamping block 63 on the outer circumference of the two guide rods 62. The upper surface of the guide rod 62 is fixedly connected to a limiting block 64, and the outer circumference of the guide rod 62 is located between the limiting block 64 and the second clamping block 63 and is sleeved with a spring 65. The middle part of the upper surface of the second clamping block 63 is fixedly connected to a connecting rod 66, and the upper surface of the connecting rod 66 is fixedly connected to a limiting ring 67.

[0028] Furthermore, a semicircular groove 68 adapted to the threaded rod 52 is formed on each of the first clamping block 61 and the second clamping block 63 , and a rubber pad 681 is fixedly installed inside the semicircular groove 68 .

[0029] Furthermore, two cylinders 69 are symmetrically arranged below the limiting ring 67 , the lower surface of the cylinder 69 is fixedly connected to the upper surface of the cutter disc 2 , and the output end of the cylinder 69 is fixedly connected to the lower surface of the limiting ring 67 .

[0030] After the adjustment is completed, the cylinder 69 pushes the limit ring 67 downward, driving the second block 63 to press down along the guide rod 62. The first block 61 and the second block 63 clamp the threaded rod 52 through the semicircular groove 68. The rubber pad 681 increases the friction resistance to prevent the threaded rod 52 from loosening. The spring 65 provides a buffer to avoid rigid impact.

[0031] Furthermore, a mounting ring 71 is fixedly connected to the upper surface of the first bevel gear 11, and a plurality of first placement grooves 72 are provided on the circumferential outer wall of the mounting ring 71. A plurality of second placement grooves 73 corresponding to the number of placement grooves and connected to each other are provided on the upper surface of the mounting ring 71. A blade 74 is slidably connected to the inner side of the first placement groove 72, and a first trapezoidal block 75 is slidably connected to the inner side of the second placement groove 73.

[0032] Furthermore, the first trapezoidal block 75 is fixedly connected to the blade 74 .

[0033] Furthermore, the first trapezoidal block 75 is slidably connected to the second trapezoidal block 76 , an L-shaped rod 77 is fixedly connected to the upper surface of the second trapezoidal block 76 , and a round rod 78 is fixedly connected to the bottom of the L-shaped rod 77 in the vertical direction.

[0034] Furthermore, a locking groove 671 is formed on the upper surface of the limiting ring 67 , and the round rod 78 is slidably connected to the locking groove 671 .

[0035] In order to improve work efficiency during the processing (that is, the blade 4 can be adjusted without stopping the machine), the blade 4 can also be dynamically adjusted. During the rotation of the cutter disc, the cylinder 69 is started, and the output end of the cylinder 69 drives the limit ring 67 to move upward. The limit ring 67 drives the connecting rod 66 and the second clamping block 63 to move. At this time, the second clamping block 63 and the first clamping block 61 move away from each other, that is, the restriction on the threaded rod 52 is released. At the same time, during the movement of the limit ring 67, the second trapezoidal block 76, the L-shaped rod 77 and the round rod 78 are driven upward. The gap between the second trapezoidal block 76 and the first trapezoidal block 75 is controlled by the height of the rising cylinder 69. When a gap is generated between the second trapezoidal block 76 and the first trapezoidal block 75, the blade 74 is thrown out under the action of centrifugal force. Due to the principle of wind resistance, the blade 74 will slow down the rotation speed of the mounting ring 71, that is, the mounting ring 71 and the tool holder 1 rotate relative to each other. At this time, the mounting ring 71 can drive the first bevel gear 11 to rotate, thereby realizing dynamic adjustment of the blade 4.

[0036] How it works During operation, after the tool holder 1 is fixed at a preset position, the processing machine drives the tool holder 1 to rotate and move to a suitable position. The rotation of the tool holder 1 drives the cutter disc 2 to rotate, and the workpiece is processed by the blade 4.

[0037] When the cutting diameter of the blade 4 needs to be adjusted, the staff rotates the first bevel gear 11, which meshes with the multiple second bevel gears 53, driving all the threaded rods 52 to rotate synchronously. The threaded rods 52 cooperate with the threaded holes 311 of the guide block 31, and when rotating, push the slider 3 to move radially along the slide groove 21, thereby adjusting the cutting diameter of the blade 4. All the threaded rods 52 are driven by the same first bevel gear 11, ensuring that the adjustment amount of each blade is consistent and the processing concentricity is guaranteed; After the adjustment is completed, the cylinder 69 pushes the limit ring 67 downward, driving the second block 63 to press down along the guide rod 62. The first block 61 and the second block 63 clamp the threaded rod 52 through the semicircular groove 68. The rubber pad 681 increases the friction resistance to prevent the threaded rod 52 from loosening. The spring 65 provides a buffer to avoid rigid impact.

[0038] In order to improve work efficiency during the processing (that is, the blade 4 can be adjusted without stopping the machine), the blade 4 can also be dynamically adjusted. During the rotation of the cutter disc, the cylinder 69 is started, and the output end of the cylinder 69 drives the limit ring 67 to move upward. The limit ring 67 drives the connecting rod 66 and the second clamping block 63 to move. At this time, the second clamping block 63 and the first clamping block 61 move away from each other, that is, the restriction on the threaded rod 52 is released. At the same time, during the movement of the limit ring 67, the second trapezoidal block 76, the L-shaped rod 77 and the round rod 78 are driven upward. The gap between the second trapezoidal block 76 and the first trapezoidal block 75 is controlled by the height of the rising cylinder 69. When a gap is generated between the second trapezoidal block 76 and the first trapezoidal block 75, the blade 74 is thrown out under the action of centrifugal force. Due to the principle of wind resistance, the blade 74 will slow down the rotation speed of the mounting ring 71, that is, the mounting ring 71 and the tool holder 1 rotate relative to each other. At this time, the mounting ring 71 can drive the first bevel gear 11 to rotate, thereby realizing dynamic adjustment of the blade 4.

[0039] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above-described embodiments. The above-described embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rotary milling cutter disc capable of adjusting diameter, characterized in that: including a knife holder (1); A cutter disc (2), the cutter disc (2) being fixedly connected to the lower surface of the cutter seat (1); Slide grooves (21), wherein a plurality of slide grooves (21) are evenly provided at the edge of the cutter disc (2) along the circumferential direction; A slider (3), wherein the slider (3) is slidably connected to the inner side of the slide groove (21); A blade (4), the side wall of the slider (3) is fixed with the blade (4) by bolts; An adjustment component, wherein the upper surface of the cutter disc (2) is provided with an adjustment component for adjusting the position of the slider (3); A limiting component is provided on the upper surface of the cutter disc (2) on one side of the adjustment component.

2. The diameter-adjustable rotary milling cutter disc according to claim 1, characterized in that: The lower end of the circumferential outer wall of the knife seat (1) is rotatably connected to a first bevel gear (11).

3. The diameter-adjustable rotary milling cutter disc according to claim 1, characterized in that: A guide block (31) is fixedly connected to one side of the upper surface of the slider (3), and a threaded hole (311) is provided in the middle of the guide block (31).

4. The diameter-adjustable rotary milling cutter disc according to claim 1, characterized in that: The adjustment assembly comprises a plurality of blocks (51) fixedly mounted on the edge of the upper surface of the cutter disc (2) and corresponding in number to the number of the slide grooves (21); a threaded rod (52) is rotatably connected to the side wall of the block (51); the threaded rod (52) passes through the threaded hole (311) and cooperates therewith; an end of the threaded rod (52) away from the block (51) is fixedly connected to a second bevel gear (53), and the second bevel gear (53) is meshed with the first bevel gear (11).

5. The diameter-adjustable rotary milling cutter disc according to claim 1, characterized in that: The limiting assembly comprises a first clamping block (61) fixedly connected to the upper surface of the cutter disc (2) and located below the threaded rod (52); guide rods (62) are symmetrically fixedly connected to the upper surface of the first clamping block (61); the outer circumferential walls of the two guide rods (62) are slidably connected to the second clamping block (63); the upper surface of the guide rod (62) is fixedly connected to a limiting block (64); the outer circumferential wall of the guide rod (62) is sleeved with a spring (65) between the limiting block (64) and the second clamping block (63); the middle part of the upper surface of the second clamping block (63) is fixedly connected to a connecting rod (66); and the upper surface of the connecting rod (66) is fixedly connected to a limiting ring (67).

6. The diameter-adjustable rotary milling cutter disc according to claim 5, characterized in that: The first clamping block (61) and the second clamping block (63) are both provided with a semicircular groove (68) adapted to the threaded rod (52), and a rubber pad (681) is fixedly installed inside the semicircular groove (68).

7. The diameter-adjustable rotary milling cutter disc according to claim 6, characterized in that: Two cylinders (69) are symmetrically arranged below the limiting ring (67), the lower surface of the cylinder (69) is fixedly connected to the upper surface of the cutter head (2), and the output end of the cylinder (69) is fixedly connected to the lower surface of the limiting ring (67).

8. The diameter-adjustable rotary milling cutter disc according to claim 2, characterized in that: A mounting ring (71) is fixedly connected to the upper surface of the first bevel gear (11); a plurality of first placement grooves (72) are provided on the circumferential outer wall of the mounting ring (71); a plurality of second placement grooves (73) corresponding to the number of the placement grooves and connected to each other are provided on the upper surface of the mounting ring (71); a blade (74) is slidably connected to the inner side of the first placement groove (72); and a first trapezoidal block (75) is slidably connected to the inner side of the second placement groove (73).

9. The diameter-adjustable rotary milling cutter disc according to claim 8, characterized in that: The first trapezoidal block (75) is fixedly connected to the blade (74).

10. The diameter-adjustable rotary milling cutter disc according to claim 9, characterized in that: The first trapezoidal block (75) is slidably connected to a second trapezoidal block (76); an L-shaped rod (77) is fixedly connected to the upper surface of the second trapezoidal block (76); and a round rod (78) is fixedly connected to the bottom of the L-shaped rod (77) in the vertical direction.

11. The diameter-adjustable rotary milling cutter disc according to claim 10, characterized in that: A locking groove (671) is provided on the upper surface of the limiting ring (67), and the round rod (78) is slidably connected to the locking groove (671).

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