A clamping device for a hard metal cutting tool and an indexable insert therefor

Abstract

The application discloses a clamping device of a hard alloy cutting tool and a indexable insert thereof, and relates to the technical field of alloy tools, which comprises a plurality of groups of rotationally symmetrical inserts, the inserts are connected with mounting screws, the end of the insert is provided with a clamping mechanism, the clamping mechanism is connected with a driving mechanism, the driving mechanism synchronously controls the clamping mechanism to approach or separate from the edge of the insert, the insert is further connected with an index mechanism, the index mechanism comprises an abutting wheel, the abutting wheel is detachably abutted on an abutting curved surface of the end surface of the insert, and the abutting wheel drives the insert to rotate around the axis of the mounting screw when rotating; the end surface of the insert is clamped by the clamping mechanism, the clamping mechanism avoids the chattering of the insert and the collapse of the cutting edge, the index mechanism is used for synchronously adjusting the cutting edge of the insert, the wear area of the insert is avoided, and the service life and the cutting efficiency of the insert are effectively improved.

Description

Technical Field

[0001] This invention relates to the field of alloy cutting tool technology, specifically a clamping device for a cemented carbide cutting tool and its indexable insert. Background Technology

[0002] Carbide cutting tools are tools made of cemented carbide used for machining. It is an alloy material produced by powder metallurgy from hard compounds of refractory metals and a binder metal. It features high hardness, high wear resistance, and good red hardness.

[0003] Currently, the cutting tools used for fixing alloy inserts on the market require machine shutdown and tool disassembly every time the cutting edge is adjusted when the insert wears out. This necessitates frequent manual replacement and adjustment, which greatly affects cutting efficiency and is not conducive to the establishment of unmanned production lines. Summary of the Invention

[0004] The purpose of this invention is to provide a clamping device for cemented carbide cutting tools and their indexable inserts, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A clamping device for an indexable cutting blade includes multiple sets of rotationally symmetrically arranged cutting blades. Each cutting blade is connected to a mounting screw, with one end of the mounting screw sleeved onto the cutting blade and the other end of the mounting screw fixed by a thread. A clamping mechanism is provided at the end of each cutting blade to restrict axial movement of the cutting blade on the mounting screw. The clamping mechanism is connected to a driving mechanism that synchronously controls the clamping mechanism to move closer to or away from the edge of the cutting blade. The cutting blade is also connected to an indexing mechanism, which includes an abutment wheel that can be detachably abutted against the abutment arc surface of the cutting blade end face. When the abutment wheel rotates, it drives the cutting blade to rotate around the axis of the mounting screw.

[0007] As a further aspect of the present invention: the clamping mechanism includes a clamping fork, the clamping fork is connected to a connecting rod, the clamping fork is retracted and extended through the connecting rod, when the clamping fork is extended to its limit position, it abuts against the end face of the blade, and a push-pull rod is rotatably mounted on the end of the connecting rod away from the clamping fork, the push-pull rod is connected to the drive mechanism.

[0008] As a further aspect of the present invention: the driving mechanism includes a lifting plate, a threaded rod is fitted at the center of the lifting plate, the threaded rod is connected to a driving part, the push-pull rod is rotatably connected to the bottom of the lifting plate, and the threaded rod rotates under the drive of the driving part.

[0009] As a further aspect of the present invention: the abutting wheel is eccentrically positioned opposite the end of the blade, and the furthest point of the edge of the abutting wheel from the blade axis abuts against the abutting arc surface of the blade end face. The indexing mechanism also includes a mating shaft coaxially mounted with the abutting wheel. The end of the mating shaft is provided with a hemispherical portion, and the hemispherical portion is fitted with an ejection groove. The hemispherical portion and the ejection groove are slidably fitted. During the process of the insertion rod carrying the clamping fork to the blade end face, the hemispherical portion slides along the ejection groove and drives the mating shaft and the abutting wheel to gradually approach the abutting arc surface. When the clamping fork extends to its limit, the edge of the abutting wheel contacts the abutting arc surface. The mating shaft is connected to the power assembly.

[0010] As a further aspect of the present invention: the power assembly includes a mating pulley slidably mounted with a mating shaft; a magnetic chuck is provided on the plug rod, and the mating pulley and the magnetic chuck attract each other; a belt first and a belt second are sequentially provided on the plug rod, and the belt second cooperates with the mating pulley; a bevel gear set three is connected to the belt first, and a mating gear is connected to the bevel gear set three; a transmission rod is inserted into the lifting plate; a limit bracket is connected to the upper end of the transmission rod and the threaded rod; a drive unit two is connected to the end of the transmission rod; a drive gear is provided at the bottom of the transmission rod; a suspension rod is rotatably mounted at the bottom of the threaded rod; a driven gear meshing with the drive gear is provided on the suspension rod; a gear disk is provided at the end of the suspension rod, and the mating gear meshes with the inner ring of the gear disk.

[0011] The present invention also provides a carbide cutting tool, including the clamping device for the indexable insert described above, and the tool itself. The tool has multiple mounting slots arranged symmetrically along its edge, and screw holes are provided along the edges of the mounting slots. The mounting slots are used to receive the inserts. The mounting screws are threadedly connected to the screw holes. A hollow groove is provided at the center of the tool, and the driving mechanism is located at the center of the hollow groove.

[0012] As a further aspect of the present invention: the mounting groove is provided with a plug-in hole, the clamping mechanism is plugged into the plug-in hole, and the ejection groove is provided on the outside of the plug-in hole in the mounting groove.

[0013] As a further embodiment of the present invention: the driving unit includes a driving rod rotatably mounted inside the cutting tool. One end of the driving rod is provided with a knob screw, and the other end of the driving rod is connected to a bevel gear set. The bevel gear set is connected to a threaded rod. A positioning rod is rotatably mounted on the end of the driving rod near the bevel gear set. A mating strip is provided on the positioning rod. The positioning rod and the mating strip are engaged and inserted with the cutting tool. A nut is provided between the end of the positioning rod and the cutting tool. A second positioning rod is rotatably mounted on the threaded rod at the end of the bevel gear set. A U-shaped groove for accommodating the positioning rod is provided inside the second positioning rod. A second mating strip is provided on the second positioning rod. The second positioning rod and the mating strip are engaged and inserted with the cutting tool. A nut is provided between the end of the second positioning rod and the cutting tool.

[0014] As a further embodiment of the present invention: the second driving unit includes a second driving rod that is rotatably mounted between the driving rod and the cutting tool, one end of the second driving rod is provided with a second knob screw, and a second bevel gear set is provided between the second driving rod and the transmission rod.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] (1) The blade is quickly installed by mounting screws and the blade is limited by clamping mechanism to prevent the blade from moving back and forth along the axis of the mounting screw during the cutting process, which effectively improves the service life of the blade. At the same time, the clamping mechanism abuts against the end face of the blade to prevent the blade from rotating during the cutting process. When the blade wears, the indexing mechanism can be used to adjust all the blades synchronously to maximize the use of all the cutting edge ranges of the blade. At the same time, it avoids uneven wear between the blades and ensures the overall cutting efficiency of all the blades.

[0017] (2) The abutting wheel abuts against the abutting arc surface of the blade end face. When the abutting wheel rotates, the force acting on the abutting arc surface drives the blade to rotate around the mounting screw, thereby realizing the rotation control of the blade. The force acting on the abutting arc surface when the abutting wheel rotates must be greater than the force acting on the blade end face of the clamping mechanism. This is necessary to drive the blade to perform wear adjustment. At the same time, the blade will not rotate when cutting after the adjustment is completed. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the disassembled structure of the blade and screw of the present invention.

[0019] Figure 2 This is a schematic diagram of the overall structure of the present invention.

[0020] Figure 3 This is a schematic diagram of the tool structure in this invention.

[0021] Figure 4 This is a schematic diagram of the internal structure of the cutting tool in this invention.

[0022] Figure 5 This is a schematic diagram of the cutting structure of the tool in this invention.

[0023] Figure 6 for Figure 5 Enlarged structural diagram at point A in the middle.

[0024] Figure 7 This is a schematic diagram showing the connection between the clamping mechanism and the driving mechanism in this invention.

[0025] Figure 8 This is a schematic diagram of the installation of the threaded rod and the drive rod 1 in this invention.

[0026] Figure 9 This is a schematic diagram of the installation of the rotation mechanism in this invention.

[0027] Figure 10 This is a schematic diagram of the transmission structure of the abutment wheel in this invention.

[0028] Figure 11 This is a schematic diagram of the installation structure of the abutment wheel in this invention.

[0029] In the diagram: 1. Blade; 10. Abutting arc surface; 11. Mounting screw; 2. Cutting tool; 20. Mounting slot; 21. Screw hole; 23. Hollow slot; 24. Ejection slide; 25. Insertion hole; 3. Clamping mechanism; 30. Clamping fork; 31. Insertion rod; 32. Push-pull rod; 4. Drive mechanism; 40. Lifting plate; 42. Threaded rod; 43. Drive rod one; 430. Knob screw one; 44. Bevel gear set one; 45. Positioning rod one; 450. Mating strip one; 46. Nut one; 47. Positioning rod two; 4 70. U-shaped groove; 471. Mating strip two; 48. Nut two; 5. Indexing mechanism; 50. Drive rod two; 500. Knob screw two; 51. Bevel gear set two; 52. Limiting bracket; 53. Transmission rod; 54. Drive gear; 55. Suspension rod; 56. Driven gear; 57. Gear disc; 58. Mating gear; 59. Bevel gear set three; 510. Belt one; 511. Belt two; 512. Abutment wheel; 513. Magnetic chuck; 514. Hemispherical part; 515. Mating shaft; 516. Mating pulley. Detailed Implementation

[0030] The technical solution of the present invention will be further described in detail below with reference to specific embodiments.

[0031] like Figure 1 , Figure 2 , Figure 4 , Figure 7 , Figure 10As shown, a clamping device for an indexable cutting blade includes multiple sets of rotationally symmetrically arranged cutting blades 1. Each cutting blade 1 is connected to a mounting screw 11. One end of the mounting screw 11 is sleeved with the cutting blade 1, and the other end of the mounting screw 11 is fixedly installed by threads. A clamping mechanism 3 is provided at the end of each cutting blade 1. The clamping mechanism 3 is used to restrict the axial movement of the cutting blade 1 on the mounting screw 11. The clamping mechanism 3 is connected to a driving mechanism 4. The driving mechanism 4 synchronously controls the clamping mechanism 3 to move closer to or away from the edge of the cutting blade 1. The cutting blade 1 is also connected to an indexing mechanism 5. The indexing mechanism 5 includes an abutment wheel 512. The abutment wheel 512 is detachably abutted against the abutment arc surface 10 on the end face of the cutting blade 1. When the abutment wheel 512 rotates, it drives the cutting blade 1 to rotate around the axis of the mounting screw 11.

[0032] Specifically, the blade 1 is quickly installed by mounting screw 11, and the blade 1 is limited by clamping mechanism 3 to prevent the blade 1 from moving back and forth along the axis of mounting screw 11 during the cutting process, thus effectively improving the service life of the blade 1. At the same time, clamping mechanism 3 abuts against the end face of blade 1 to prevent blade 1 from rotating during the cutting process. When the blade 1 wears, it can be adjusted synchronously with indexing mechanism 5 to maximize the use of all cutting edge ranges of blade 1, while avoiding uneven wear among blade 1 and ensuring the overall cutting efficiency of all blade 1.

[0033] More specifically, the abutting wheel 512 abuts against the abutting arc surface 10 on the end face of the blade 1. When the abutting wheel 512 rotates, the force acting on the abutting arc surface 10 drives the blade 1 to rotate around the mounting screw 11, thereby achieving rotation control of the blade 1. The force acting on the abutting arc surface 10 when the abutting wheel 512 rotates is greater than the force acting on the end face of the blade 1 by the clamping mechanism 3. This ensures that the blade 1 can be driven to perform wear adjustment, and that the blade 1 will not rotate during cutting after the adjustment is completed.

[0034] Furthermore, such as Figure 4 , Figure 7 As shown, the clamping mechanism 3 includes a clamping fork 30, which is connected to a connecting rod 31. The clamping fork 30 is retracted and extended through the connecting rod 31. When the clamping fork 30 is extended to its limit position, it abuts against the end face of the blade 1. A push-pull rod 32 is rotatably mounted on the end of the connecting rod 31 away from the clamping fork 30. The push-pull rod 32 is connected to the drive mechanism 4.

[0035] Furthermore, such as Figure 4 , Figure 7As shown, the drive mechanism 4 includes a lifting plate 40, a threaded rod 42 is fitted at the center of the lifting plate 40, the threaded rod 42 is connected to a drive unit 1, the push-pull rod 32 is rotatably connected to the bottom of the lifting plate 40, and the threaded rod 42 rotates under the drive of the drive unit 1.

[0036] Specifically, the clamping fork 30 abuts against the end face of the blade 1, thus limiting the blade 1. The lifting control push-pull rod 32 of the lifting plate 40 is used to push and pull, thereby simultaneously controlling the insertion rod 31 to insert and withdraw, which in turn causes the clamping fork 30 to engage or disengage from the end face of the blade 1. The clamping mechanism 3 facilitates the installation and removal of the blade 1, while ensuring the stability of the blade 1 during cutting and preventing axial movement of the blade 1 that could cause it to break.

[0037] Furthermore, such as Figure 6 , Figure 7 , Figure 10 , Figure 11 As shown, the abutting wheel 512 is eccentrically positioned opposite the end of the blade 1. The furthest point of the edge of the abutting wheel 512 from the axis of the blade 1 abuts against the abutting arc surface 10 on the end face of the blade 1. The indexing mechanism 5 also includes a mating shaft 515 coaxially mounted with the abutting wheel 512. The end of the mating shaft 515 is provided with a hemispherical portion 514. The hemispherical portion 514 is fitted with an ejection groove 24. The hemispherical portion 514 and the ejection groove 24 are slidably fitted. During the process of the insertion rod 31 carrying the clamping fork 30 to the end face of the blade 1, the hemispherical portion 514 slides along the ejection groove 24 and drives the mating shaft 515 and the abutting wheel 512 to gradually approach the abutting arc surface 10. When the clamping fork 30 extends to its limit, the edge of the abutting wheel 512 contacts the abutting arc surface 10. The mating shaft 515 is connected to the power assembly.

[0038] Furthermore, Figure 7 As for Figure 11As shown, the power assembly includes a pulley 516 slidably mounted to the mating shaft 515; a magnetic chuck 513 is provided on the insertion rod 31, and the pulley 516 and the magnetic chuck 513 attract each other; a belt 510 and a belt 511 are sequentially arranged on the insertion rod 31, and the belt 511 engages with the pulley 516; the belt 510 is connected to a bevel gear set 59, and the bevel gear set 59 is connected to a mating gear 58; the lifting plate... A transmission rod 53 is inserted into the threaded rod 42. The upper end of the transmission rod 53 is connected to a limit bracket 52. The end of the transmission rod 53 is connected to a second drive unit. A drive gear 54 is provided at the bottom of the transmission rod 53. A suspension rod 55 is rotatably mounted at the bottom of the threaded rod 42. A driven gear 56 that meshes with the drive gear 54 is provided on the suspension rod 55. A gear disk 57 is provided at the end of the suspension rod 55. The mating gear 58 meshes with the inner ring of the gear disk 57.

[0039] Specifically, to facilitate adjustment of the worn areas of the blade 1, the interaction between the abutting arc surface 10 on the end face of the blade 1 and the abutting wheel 512 is utilized. When the clamping mechanism 3 and the end face of the blade 1 are engaged, the abutting wheel 512 extends outward with the cooperation of the ejection groove 24, and finally the edge of the abutting wheel 512 presses against the abutting arc surface 10. When it is necessary to use the abutting wheel 512 to drive the blade 1 to rotate and avoid the worn area, the power component can be used to drive the mating shaft 515 to rotate. Under the rotational force of the abutting wheel 512, the blade 1 will be driven to rotate synchronously, thereby turning the cutting edge towards the unused area, while ensuring the consistency of all blades 1.

[0040] More specifically, when the blade 1 needs to be replaced as a whole, the clamping mechanism 3 controls the clamping fork 30 to disengage from the end face of the blade 1. During the disengagement process, due to the setting of the ejection groove 24, the abutting wheel 512 will disengage from the abutting arc surface 10 of the blade 1. At this time, the clamping fork 30 releases the abutment of the end face of the blade 1, and the abutting wheel 512 also releases the abutment of the blade 1. The blade 1 can be removed by turning the mounting screw 11.

[0041] More specifically, the vertically arranged transmission rod 53 synchronously drives the end gear disk 57 to rotate. The gear disk 57 can synchronously control the distributed mating gears 58, thereby controlling the rotation of the abutment wheel 512 in conjunction with the bevel gear set 59, belt 1 510, belt 2 511, and mating pulley 516, thus achieving the adjustment of the blade edge of the blade 1. The mating pulley 516 is fitted with a magnetic chuck 513. Under the ejection action of the ejection groove 24, the mating shaft 515 ensures that the mating pulley 516 remains attracted to the magnetic chuck 513, thereby guaranteeing reliable transmission of belt 2 511.

[0042] The present invention also provides a cemented carbide cutting tool, such as Figures 1 to 5 As shown, the clamping device including the above-mentioned indexable blade also includes a blade 2. The blade 2 has multiple mounting grooves 20 distributed symmetrically along its edge. The mounting grooves 20 have screw holes 21 along their edges. The mounting grooves 20 are used to hold the blade 1. The mounting screws 11 are threadedly connected to the screw holes 21. The blade 2 has a hollow groove 23 at its center. The drive mechanism 4 is located at the center of the hollow groove 23.

[0043] Furthermore, such as Figures 4 to 6 As shown, the mounting groove 20 is provided with a plug hole 25, the clamping mechanism 3 is plugged into the plug hole 25, and the ejection groove 24 is provided outside the plug hole 25 in the mounting groove 20.

[0044] Furthermore, such as Figure 5 , Figure 7 , Figure 8 As shown, the drive unit includes a drive rod 43 rotatably mounted inside the tool 2. One end of the drive rod 43 is provided with a knob screw 430, and the other end of the drive rod 43 is connected to a bevel gear set 44. The bevel gear set 44 is connected to a threaded rod 42. A positioning rod 45 is rotatably mounted on the end of the drive rod 43 near the bevel gear set 44. A mating strip 450 is provided on the positioning rod 45. The positioning rod 45, in conjunction with the mating strip 450, connects with the tool 2. The positioning rod 45 is fitted with a nut 46 between its end and the tool 2. The threaded rod 42 is rotatably mounted with a positioning rod 47 at its end of the bevel gear set 44. The positioning rod 47 has a U-shaped groove 470 for accommodating the positioning rod 45. The positioning rod 47 has a mating strip 471. The positioning rod 47 and the tool 2 are fitted together and fitted with the mating strip 471. The end of the positioning rod 47 is fitted with a nut 48 between its end and the tool 2.

[0045] Specifically, in order to facilitate the control of the clamping mechanism 3, a drive rod 43 is horizontally rotated and installed on the tool 2. When it is necessary to control the lifting plate 40 to rise or fall, simply use a wrench to turn the drive rod 43, which will drive the threaded rod 42 to rotate, thereby controlling the lifting plate 40 to rise or fall, and causing the clamping mechanism 3 at the end to interact with the tool 1.

[0046] More specifically, to ensure reliable meshing between the bevel gear sets 44 and reliable installation between the components and the tool 2, the drive rod 43 is positioned and installed with the tool 2 via the positioning rod 45, the mating strip 450, and the nut 46. The top of the threaded rod 42 is positioned and installed via the positioning rod 47 and the nut 48. The positioning rod 47 has a U-shaped groove 470 inside, which avoids interference from the positioning rod 45 when installing the positioning rod 47. It should be noted that the diameter of the positioning rod 45 is smaller than the diameter of the positioning rod 47 to facilitate the interaction between the positioning rod 45 and the U-shaped groove 470. At the same time, the positioning rod 47 also has a good positioning effect on the threaded rod 42.

[0047] Furthermore, such as Figure 4 , Figure 9 As shown, the second drive unit includes a second drive rod 50 rotatably mounted between the second drive rod 2 and the cutter 2. One end of the second drive rod 50 is provided with a second knob screw 500, and a second bevel gear set 51 is provided between the second drive rod 50 and the transmission rod 53.

[0048] Specifically, the power can be transmitted to the transmission rod 53 by turning the knob screw 2 500 with a wrench. In order to ensure the limited installation of the transmission rod 53, a limit bracket 52 is set between the threaded rod 42 and the transmission rod 53. Under the action of the limit bracket 52, the transmission rod 53 can reliably transmit power and will not cause the power to disengage between the bevel gear set 2 51.

[0049] The working principle of this invention embodiment is as follows:

[0050] like Figures 1-11As shown, the insert 1 is quickly installed using the mounting screw 11, and the clamping mechanism 3 limits the insert 1, preventing it from moving back and forth along the axis of the mounting screw 11 during cutting, effectively improving the service life of the insert 1. Simultaneously, the clamping mechanism 3 abuts against the end face of the insert 1, preventing it from rotating during cutting. When the insert 1 wears, the indexing mechanism 5 can be used to synchronously adjust all inserts 1, maximizing the use of all cutting edge ranges and preventing uneven wear among inserts 1, ensuring the overall cutting efficiency of all inserts 1. The abutting wheel 512 abuts against the abutting arc surface 10 on the end face of the insert 1. When the abutting wheel 512 rotates, the force acting on the abutting arc surface 10 drives the insert 1 to rotate around the mounting screw 11, thus achieving rotation control of the insert 1. The force exerted by the abutment wheel 512 on the abutment arc surface 10 when it rotates is greater than the force exerted by the clamping mechanism 3 on the end face of the blade 1. This ensures that the blade 1 can be adjusted for wear, and that it will not rotate during cutting after adjustment. The clamping fork 30 abuts against the end face of the blade 1, thus limiting its movement. The lifting control push-pull rod 32 of the lifting plate 40 is used to push and pull, thereby synchronously controlling the insertion rod 31 to insert and withdraw, which in turn causes the clamping fork 30 to engage or disengage from the end face of the blade 1. The clamping mechanism 3 facilitates the installation and removal of the blade 1, while ensuring the stability of the blade 1 during cutting and preventing axial movement that could cause the blade 1 to break. To facilitate adjustment of the worn areas of the blade 1, the interaction between the abutting arc surface 10 on the end face of the blade 1 and the abutting wheel 512 is utilized. When the clamping mechanism 3 engages with the end face of the blade 1, the abutting wheel 512 extends outward under the cooperation of the ejection groove 24, and finally the edge of the abutting wheel 512 presses against the abutting arc surface 10. When it is necessary to use the abutting wheel 512 to drive the blade 1 to rotate and avoid the worn area, the power component can be used to drive the mating shaft 515 to rotate. Under the rotational force of the abutting wheel 512, the blade 1 will be driven to rotate synchronously, thereby turning the cutting edge towards the unused area and ensuring the consistency of all blades 1. When the blade 1 needs to be replaced as a whole, the clamping fork 30 is disengaged from the end face of the blade 1 by the clamping mechanism 3. During the disengagement process, due to the setting of the ejector groove 24, the abutment wheel 512 will disengage from the abutment arc surface 10 of the blade 1. At this time, the clamping fork 30 releases its abutment from the end face of the blade 1, and the abutment wheel 512 also releases its abutment from the blade 1. The blade 1 can be removed by turning the mounting screw 11. The vertically arranged transmission rod 53 synchronously drives the end gear disk 57 to rotate. The gear disk 57 can synchronously control the distributed mating gears 58, thereby controlling the rotation of the abutment wheel 512 in conjunction with the bevel gear set 3 59, belt 1 510, belt 2 511 and mating pulley 516, thereby realizing the adjustment of the blade edge of the blade 1.The pulley 516 is fitted with a magnetic chuck 513. Under the ejection action of the ejection groove 24, the pulley 516 remains attracted to the magnetic chuck 513, ensuring reliable transmission of the belt 511. To facilitate control of the clamping mechanism 3, a drive rod 43 is horizontally mounted on the tool 2. When the lifting plate 40 needs to be raised or lowered, simply turn the drive rod 43 with a wrench to rotate the threaded rod 42, thereby controlling the lifting plate 40 to move up and down, which in turn causes the clamping mechanism 3 at the end to interact with the tool 1. To ensure reliable meshing between the bevel gear sets 44 and reliable installation between the components and the cutting tool 2, the drive rod 43 is positioned and installed between the drive rod 43 and the cutting tool 2 via the positioning rod 45, the mating strip 450, and the nut 46. The top of the threaded rod 42 is positioned and installed via the positioning rod 47 and the nut 48. The positioning rod 47 has a U-shaped groove 470 inside, which avoids interference from the positioning rod 45 when installing the positioning rod 47. It should be noted that the diameter of the positioning rod 45 is smaller than the diameter of the positioning rod 47 to facilitate the interaction between the positioning rod 45 and the U-shaped groove 470. At the same time, the positioning rod 47 also has a good positioning effect on the threaded rod 42. The drive rod 50 can be rotated by turning the knob screw 2 500 with a wrench, thereby transmitting power to the transmission rod 53. In order to ensure the limited installation of the transmission rod 53, a limit bracket 52 is set between the threaded rod 42 and the transmission rod 53. Under the action of the limit bracket 52, the transmission rod 53 can reliably transmit power and will not cause the power to disengage between the bevel gear set 2 51.

[0051] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0052] 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.

Claims

1. A clamping device for an indexable cutting blade, comprising multiple sets of rotationally symmetrically arranged cutting blades (1), each cutting blade (1) being connected to a mounting screw (11), one end of each mounting screw (11) being sleeved between itself and the cutting blade (1), and the other end of each mounting screw (11) being fixedly installed by a thread, characterized in that, The blade (1) is provided with a clamping mechanism (3) at its end. The clamping mechanism (3) is used to restrict the blade (1) from axial movement on the mounting screw (11). The clamping mechanism (3) is connected to a driving mechanism (4). The driving mechanism (4) synchronously controls the clamping mechanism (3) to approach or disengage from the edge of the blade (1). The blade (1) is also connected to a rotation mechanism (5). The rotation mechanism (5) includes an abutting wheel (512). The abutting wheel (512) is detachably abutted on the abutting arc surface (10) of the end face of the blade (1). When the abutting wheel (512) rotates, it drives the blade (1) to rotate around the axis of the mounting screw (11). The clamping mechanism (3) includes a clamping fork (30), which is connected to a plug rod (31). The clamping fork (30) is retracted and extended through the plug rod (31). When the clamping fork (30) is extended to its limit position, it abuts against the end face of the blade (1). A push-pull rod (32) is rotatably installed at the end of the plug rod (31) away from the clamping fork (30). The push-pull rod (32) is connected to the drive mechanism (4). The drive mechanism (4) includes a lifting plate (40), a threaded rod (42) is installed at the center of the lifting plate (40), the threaded rod (42) is connected to a drive unit, the push-pull rod (32) is rotatably connected to the bottom of the lifting plate (40), and the threaded rod (42) rotates under the drive of the drive unit. The abutting wheel (512) is eccentrically positioned opposite the end of the blade (1). The farthest point of the edge of the abutting wheel (512) from the axis of the blade (1) abuts against the abutting arc surface (10) on the end face of the blade (1). The indexing mechanism (5) also includes a mating shaft (515) coaxially mounted with the abutting wheel (512). The end of the mating shaft (515) is provided with a hemispherical part (514). The hemispherical part (514) is provided with an ejection groove (24). 14) Sliding fit between the insertion rod (31) and the ejection groove (24), during the process of the insertion rod (31) carrying the clamping fork (30) to the end face of the blade (1), the hemispherical part (514) slides along the ejection groove (24) and drives the mating shaft (515) and the abutting wheel (512) to gradually approach the abutting arc surface (10). When the clamping fork (30) extends to the limit, the edge of the abutting wheel (512) contacts the abutting arc surface (10). The mating shaft (515) is connected to the power assembly. The power assembly includes a pulley (516) slidably mounted to a mating shaft (515), a magnetic chuck (513) on the plug rod (31), the pulley (516) and the magnetic chuck (513) attracting each other, a belt (510) and a belt (511) are sequentially mounted on the plug rod (31), the belt (511) and the pulley (516) engaging with each other, the belt (510) is connected to a bevel gear set (59), the bevel gear set (59) is connected to a mating gear (58), and the lifting plate (40) A transmission rod (53) is inserted into the upper part of the transmission rod (53) and the upper end of the threaded rod (42) is connected to a limit bracket (52). The end of the transmission rod (53) is connected to a second drive unit. A drive gear (54) is provided at the bottom of the transmission rod (53). A suspension rod (55) is rotatably mounted at the bottom of the threaded rod (42). A driven gear (56) that meshes with the drive gear (54) is provided on the suspension rod (55). A gear disk (57) is provided at the end of the suspension rod (55). The mating gear (58) meshes with the inner ring of the gear disk (57).

2. A cemented carbide cutting tool, comprising a clamping device for an indexable insert as described in claim 1, characterized in that, It also includes a cutting tool (2), which has multiple mounting slots (20) arranged symmetrically on its edge. The mounting slots (20) have screw holes (21) on their edges. The mounting slots (20) are used to store the blade (1). The mounting screw (11) is threadedly connected to the screw hole (21). The center of the cutting tool (2) has a hollow groove (23), and the driving mechanism (4) is located at the center of the hollow groove (23).

3. A cemented carbide cutting tool according to claim 2, characterized in that, The mounting groove (20) is provided with a plug hole (25), the clamping mechanism (3) is plugged into the plug hole (25), and the ejection groove (24) is provided on the outside of the plug hole (25) in the mounting groove (20).

4. A cemented carbide cutting tool according to claim 2, characterized in that, The drive unit includes a drive rod (43) rotatably mounted inside the cutter (2). One end of the drive rod (43) is provided with a knob screw (430), and the other end of the drive rod (43) is connected to a bevel gear set (44). The bevel gear set (44) is connected to a threaded rod (42). A positioning rod (45) is rotatably mounted on the end of the drive rod (43) near the bevel gear set (44). A mating strip (450) is provided on the positioning rod (45). The positioning rod (45) engages with the cutter (2) in conjunction with the mating strip (450). The positioning rod (45) is connected by a nut (46) between its end and the cutting tool (2). The threaded rod (42) is rotatably mounted on the end of the bevel gear set (44). The positioning rod (47) has a U-shaped groove (470) for accommodating the positioning rod (45). The positioning rod (47) has a mating strip (471) on it. The positioning rod (47) is connected to the cutting tool (2) by mating strip (471). The end of the positioning rod (47) is connected to the cutting tool (2).

5. A cemented carbide cutting tool according to claim 2, characterized in that, The second drive unit includes a second drive rod (50) rotatably mounted between the second drive rod (2) and the cutter (2). One end of the second drive rod (50) is provided with a second knob screw (500). A second bevel gear set (51) is provided between the second drive rod (50) and the transmission rod (53).

Images