A polishing device for passivating a milling cutter

Abstract

The utility model relates to the technical field of polishing and polishing, disclose a kind of polishing and polishing device for passivation milling cutter, including workbench main body and polishing disc, the upper top edge of workbench main body is provided with the polishing and polishing mechanism of polishing milling cutter, the upper top edge of workbench main body is fixedly connected with the guard plate in symmetry, can be replaced mechanism to the timely replacement of polishing disc, wherein replacement mechanism can drive polishing disc to do ninety degrees arc rotation, at this time, the center point of polishing disc and machining nose coincides, then the telescopic end of hydraulic push rod drives new polishing disc to move linearly, when the guiding sleeve of polishing disc back is connected in the outer wall of guide rod, it is finished the positioning of polishing disc, then control sliding push rod drives electric clamp to move linearly and contract, to complete the release of polishing disc, and user installs stud in the polishing disc outer wall and guide rod installation butt joint at this time, polishing disc is installed.

Description

Technical Field

[0001] This utility model relates to the field of grinding and polishing technology, specifically to a grinding and polishing device for passivating milling cutters. Background Technology

[0002] In modern manufacturing, milling cutters are important cutting tools and are widely used in various machining fields, such as aerospace, automobile manufacturing, and mold processing. The performance of milling cutters directly affects the quality, precision, and production efficiency of machined parts. Grinding and polishing are the core steps in the passivation treatment of milling cutters. Their purpose is to finely machine the cutting edge of the milling cutter, remove burrs and sharp edges, and form a passivated cutting edge with a certain radius of curvature.

[0003] In the grinding and polishing process of passivated end mills, the polishing disc, as a key component directly acting on the end mill, plays a decisive role in the polishing effect. With increasing usage time, the polishing disc gradually wears down, leading to decreased grinding accuracy and increased surface roughness, which severely affects the passivation quality of the end mill. If it is not replaced in time, the machined end mill will fail to meet high-precision machining requirements, reducing the product qualification rate. However, existing end mill grinding and polishing equipment has significant shortcomings in polishing disc replacement. On the one hand, the replacement operation is cumbersome and complex, often requiring professional technicians to spend a lot of time disassembling and installing, increasing labor costs and resulting in low production efficiency, making it unsuitable for large-scale, continuous production. On the other hand, it is difficult to ensure the installation accuracy of the new polishing disc during replacement, easily leading to inaccurate positioning. This causes deviations in the relative position of the polishing disc and the machining head, affecting the uniformity and consistency of grinding and polishing, ultimately resulting in unstable end mill cutting edge quality, failing to provide reliable assurance for subsequent machining processes. Therefore, those skilled in the art provide a grinding and polishing device for passivated end mills to solve the problems mentioned in the background art. Utility Model Content

[0004] The purpose of this invention is to provide a grinding and polishing device for passivating milling cutters, thereby solving the problems mentioned in the background art.

[0005] This utility model provides the following technical solution: a grinding and polishing device for passivating milling cutters, comprising a worktable body and a polishing disc. A grinding and polishing mechanism for grinding milling cutters is provided at the upper top edge of the worktable body. Protective plates are symmetrically fixedly connected at the upper top edge of the worktable body. Two sets of replacement mechanisms for replacing polishing discs are symmetrically arranged on the outer wall of the grinding and polishing mechanism. The polishing discs are located on the outer wall of the grinding and polishing mechanism. Two sliding frames are symmetrically fixedly connected at the lower bottom end of the worktable body. A storage box is slidably fitted inside the two sliding frames.

[0006] Preferably, the grinding and polishing mechanism includes a machining head fixedly connected to the main body of the worktable, with its top end located between two protective plates. A guide rod is fixedly connected to the output end of the machining head. A guide sleeve is fixedly connected to the center of the polishing disc on the side near the machining head. The polishing disc is slidably sleeved on the outer wall of the guide rod through the guide sleeve. A mounting bolt is threaded onto the outer wall of the polishing disc, and the end of the mounting bolt is threaded into the inside of the guide rod.

[0007] Preferably, the upper top of the processing head has two support blocks symmetrically fixedly connected to support the polishing disc, and the outer walls of the processing head have inner grooves on both sides, and guide grooves are provided on one side of the inner grooves on both sides of the outer walls of the processing head.

[0008] Preferably, each set of replacement mechanisms includes a first gear and a second gear threaded onto the inner sidewall of the inner groove, and the first gear and the second gear mesh and drive each other. A maintenance plate is bolted to the outer wall of the processing head at the position of the inner groove. The maintenance plate is used to protect the first gear and the second gear. A drive motor is fixedly connected to the side of the maintenance plate away from the processing head. A drive rod is fixedly connected to the output end of the drive motor, and the end of the drive rod away from the drive motor is fixedly connected to the end of the first gear.

[0009] Preferably, a fixing rod is fixedly connected to the end of the second gear, and the fixing rod extends to the outer wall of the inspection plate. The drive rod and the fixing rod are rotatably sleeved with the inspection plate through a bearing. A rotating bracket is fixedly sleeved on the outer wall of the extended end of the fixing rod. A hydraulic push rod is fixedly connected to the upper top of the rotating bracket. A sliding push rod is fixedly connected to the telescopic end of the hydraulic push rod. An electric clamp for clamping the polishing disc is fixedly connected to the telescopic end of the sliding push rod.

[0010] Preferably, a guide bracket is fixedly connected to the side of the hydraulic push rod near the processing head, the guide bracket is slidably sleeved inside the guide groove, the two sets of the replacement mechanism are used to limit the polishing disc, a chip removal plate is embedded at the top of the main body of the worktable, and the polishing disc installed on the outer wall of the guide rod is located directly above the chip removal plate.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This invention features a replacement mechanism that allows for timely replacement of the polishing disc during use. The mechanism rotates the polishing disc 90 degrees, aligning it with the center point of the machining head. A new polishing disc then moves linearly via the extension of a hydraulic push rod. Once the guide sleeve on the back of the polishing disc engages with the outer wall of the guide rod, the disc is positioned. The sliding push rod then retracts the electric clamp, releasing the polishing disc. The user then attaches the mounting bolts to the outer wall of the polishing disc and aligns it with the guide rod, completing the installation. This method allows for quick installation of the polishing disc on the outer wall of the guide rod and facilitates the replacement of worn-out discs, preventing interference with the polishing of the milling cutter. Attached Figure Description

[0013] Figure 1 A schematic diagram of the overall structure of a grinding and polishing device for blunting milling cutters;

[0014] Figure 2 This is a schematic diagram of the top of the worktable body in a grinding and polishing device for blunting milling cutters.

[0015] Figure 3 This is a schematic diagram of the grinding and polishing mechanism in a grinding and polishing device for a passivated milling cutter.

[0016] Figure 4 This is a schematic diagram of the structure of a grinding and polishing device for blunting milling cutters, used for machining the side of the machine head.

[0017] In the diagram: 1. Main body of the workbench; 2. Protective plate; 3. Sliding frame; 4. Storage box; 5. Chip removal plate; 6. Grinding and polishing mechanism; 61. Processing head; 611. Support block; 62. Guide rod; 63. Guide sleeve; 64. Mounting bolt; 65. Inner groove; 66. Guide groove; 7. Replacement mechanism; 71. Inspection plate; 72. Drive motor; 73. Drive rod; 731. First gear; 74. Fixed rod; 75. Rotating bracket; 76. Hydraulic push rod; 761. Guide bracket; 77. Sliding push rod; 78. Electric clamp; 79. Second gear; 8. Polishing disc. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0019] Please see Figure 1 - Figure 4As shown, this utility model provides a technical solution: a grinding and polishing device for blunting milling cutters, including a worktable body 1 and a polishing disc 8. A grinding and polishing mechanism 6 for grinding milling cutters is provided at the upper top edge of the worktable body 1. A protective plate 2 is symmetrically fixedly connected at the upper top edge of the worktable body 1. Two sets of replacement mechanisms 7 for replacing polishing discs 8 are symmetrically provided on the outer wall of the grinding and polishing mechanism 6. The polishing disc 8 is located on the outer wall of the grinding and polishing mechanism 6. Two sliding frames 3 are symmetrically fixedly connected at the lower bottom end of the worktable body 1. A storage box 4 is slidably sleeved inside the two sliding frames 3.

[0020] It should be noted that the grinding and polishing mechanism 6, located at the top edge of the workbench body 1, can precisely grind and polish the milling cutter, improving its machining accuracy and surface quality, and ensuring its performance. The protective plate 2, symmetrically fixed at the top edge of the workbench body 1, provides protection during the grinding and polishing process, preventing debris from flying and causing injury to operators, thus ensuring a safe working environment. The two sets of replacement mechanisms 7, symmetrically arranged on the outer wall of the grinding and polishing mechanism 6, facilitate quick replacement of the polishing disc 8, saving replacement time, improving work efficiency, and meeting different processing needs. The two sliding frames 3, symmetrically fixed at the bottom of the workbench body 1, and the storage box 4, which is slidably fitted inside, can effectively collect debris and waste generated during the grinding and polishing process, keeping the workbench surface clean and facilitating centralized cleaning.

[0021] As one implementation method in this embodiment, please refer to Figure 2 - Figure 4 As shown, the grinding and polishing mechanism 6 includes a processing head 61 fixedly connected to the worktable body 1, with its top end located between two protective plates 2. A guide rod 62 is fixedly connected to the output end of the processing head 61. A guide sleeve 63 is fixedly connected to the center of the polishing disc 8 near the processing head 61. The polishing disc 8 is slidably sleeved on the outer wall of the guide rod 62 through the guide sleeve 63. A mounting bolt 64 is threaded onto the outer wall of the polishing disc 8, and the end of the mounting bolt 64 is threaded into the inside of the guide rod 62. Two support blocks 611 for supporting the polishing disc 8 are symmetrically fixedly connected to the top end of the processing head 61. Inner grooves 65 are opened on both sides of the outer wall of the processing head 61, and guide grooves 66 are opened on the side of the inner grooves 65 on both sides of the outer wall of the processing head 61.

[0022] It should be noted that the machining head 61 is fixed to the top of the worktable body 1 and located between the two protective plates 2. The position is reasonable and can stably output power for grinding and polishing operations. The cooperation between the guide rod 62 and the guide sleeve 63 allows the polishing disc 8 to be accurately positioned during installation. The sliding sleeve method facilitates the quick initial installation of the polishing disc 8 into the appropriate position, improving installation efficiency. The polishing disc 8 is firmly fixed to the guide rod 62 by the mounting bolts 64, ensuring the stability of the polishing disc 8 during grinding and polishing, reducing shaking, thereby improving processing accuracy and making the milling cutter surface more uniformly ground. The two symmetrical support blocks 611 at the top of the machining head 61 can provide additional support for the polishing disc 8, share some of the pressure, and extend the service life of the polishing disc 8. The setting of the inner groove 65 and the guide groove 66 provides installation and operating space for possible auxiliary tools or components, facilitating the realization of more functions.

[0023] As one implementation method in this embodiment, please refer to Figure 2 - Figure 4 As shown, each replacement mechanism 7 includes a first gear 731 and a second gear 79 threadedly connected to the inner wall of the inner groove 65, and the first gear 731 and the second gear 79 meshing and transmitting power. A maintenance plate 71 is bolted to the outer wall of the machining head 61 at the position of the inner groove 65. The maintenance plate 71 is used to protect the first gear 731 and the second gear 79. A drive motor 72 is fixedly connected to the side of the maintenance plate 71 away from the machining head 61. A drive rod 73 is fixedly connected to the output end of the drive motor 72, and the drive rod 73 is located away from the drive motor 72. The end of the first gear 731 is fixedly connected to the end of the second gear 79, and the end of the second gear 79 is fixedly connected to a fixed rod 74, which extends to the outer wall of the inspection plate 71. The drive rod 73 and the fixed rod 74 are rotatably sleeved with the inspection plate 71 through a bearing. A rotating bracket 75 is fixedly sleeved on the outer wall of the extended end of the fixed rod 74. A hydraulic push rod 76 is fixedly connected to the top of the rotating bracket 75. A sliding push rod 77 is fixedly connected to the telescopic end of the hydraulic push rod 76. An electric clamp 78 for clamping the polishing disc 8 is fixedly connected to the telescopic end of the sliding push rod 77.

[0024] It should be noted that the first gear 731 and the second gear 79 mesh and transmit power. The drive motor 72 drives the drive rod 73 to rotate, which in turn causes the first gear 731 to rotate. Through meshing, the second gear 79 is driven to rotate, achieving stable power transmission and providing a power foundation for subsequent operations. The inspection plate 71 is bolted to the inner groove 65, which can effectively protect the first gear 731 and the second gear 79 from damage caused by external factors, and facilitate disassembly and maintenance, reducing maintenance costs. The drive rod 73 and the fixed rod 74 are rotatably connected to the inspection plate 71 through bearings, ensuring flexible and smooth rotation, reducing friction loss, and improving transmission efficiency. The rotating bracket 75 is fixed to the extension end of the fixed rod 74 and rotates with the second gear 79, allowing for flexible angle adjustment. The hydraulic push rod 76 and the sliding push rod 77 work together to precisely control the position of the electric clamp 78. The electric clamp 78 can firmly hold the polishing disc 8, enabling quick and accurate replacement of the polishing disc 8, saving replacement time and improving production efficiency.

[0025] As one implementation method in this embodiment, please refer to Figure 1 - Figure 4 As shown, a guide bracket 761 is fixedly connected to the side of the hydraulic push rod 76 near the processing head 61. The guide bracket 761 is slidably sleeved inside the guide groove 66. Two sets of replacement mechanisms 7 are used to limit the polishing disc 8. A chip removal plate 5 is embedded at the top of the worktable body 1. The polishing disc 8, which is installed on the outer wall of the guide rod 62, is located directly above the chip removal plate 5.

[0026] It should be noted that when the hydraulic push rod 76 extends and retracts, driving the related components to move, the guide bracket 761 slides precisely within the guide groove 66. This effectively prevents the hydraulic push rod 76 from shifting or wobbling, ensuring that the electric clamp 78 can accurately reach the designated position to operate the polishing disc 8. This improves the accuracy of polishing disc 8 replacement and reduces problems such as replacement failures due to positional deviations or insecure installation of the polishing disc 8. After installation, the polishing disc 8 is fixed in position and is not prone to displacement during operation, thus ensuring uniform grinding and polishing quality and improving the machining accuracy of the milling cutter. The chip removal plate 5 embedded at the top of the worktable body 1, with the polishing disc 8 located directly above it, allows the chips generated during grinding and polishing to fall directly into the chip removal plate 5. The chips are discharged in time, preventing them from accumulating on the worktable and affecting the processing environment. It also prevents chips from interfering with the normal operation of the polishing disc 8, extending the service life of the polishing disc 8. At the same time, it facilitates centralized chip cleaning, reduces cleaning difficulty, and improves overall work efficiency.

[0027] Working principle: When the polishing disc 8 needs to be replaced, the replacement mechanism 7 comes into play, the drive motor 72 starts, and drives the drive rod 73 to rotate. Since the drive rod 73 is fixedly connected to the end of the first gear 731, the first gear 731 rotates accordingly. Since the first gear 731 meshes with the second gear 79, the second gear 79 also rotates, which in turn drives the fixed rod 74 to rotate, causing the rotating bracket 75 to rotate, and driving the polishing disc 8 to rotate in a 90-degree arc until the polishing disc 8 coincides with the center point of the processing head 61.

[0028] Next, the hydraulic push rod 76 operates, and its telescopic end drives the sliding push rod 77 and the electric clamp 78 to perform linear motion on the new polishing disc 8. The guide bracket 761 on the hydraulic push rod 76 slides in the guide groove 66 to ensure stable movement. When the guide sleeve 63 on the back of the polishing disc 8 is fitted onto the outer wall of the guide rod 62, the polishing disc 8 is positioned. Then, the sliding push rod 77 is controlled to drive the electric clamp 78 to retract linearly, releasing the polishing disc 8. At this time, the user installs the mounting bolt 64 on the outer wall of the polishing disc 8 and assembles it with the guide rod 62. The polishing disc 8 is then installed.

[0029] The chip removal plate 5 is embedded at the top of the main body 1 of the worktable, and the polishing disc 8 is located directly above it, which facilitates the collection of chips. The support block 611 at the top of the machining head 61 can support the polishing disc 8. The protective plate 2 can protect the chip from splashing. In this way, the polishing disc 8 can be quickly installed on the outer wall of the guide rod 62, and the polishing disc 8 with reduced polishing effect can be replaced in time to avoid affecting the polishing treatment of the milling cutter.

[0030] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A grinding and polishing device for passivating milling cutters, comprising a worktable body (1) and a polishing disc (8), characterized in that: A grinding and polishing mechanism (6) for grinding milling cutters is provided at the upper top edge of the workbench body (1). A protective plate (2) is symmetrically fixedly connected at the upper top edge of the workbench body (1). Two sets of replacement mechanisms (7) for replacing polishing discs (8) are symmetrically provided on the outer wall of the grinding and polishing mechanism (6). The polishing discs (8) are located on the outer wall of the grinding and polishing mechanism (6). Two sliding frames (3) are symmetrically fixedly connected at the lower bottom end of the workbench body (1). A storage box (4) is slidably sleeved inside the two sliding frames (3).

2. The grinding and polishing device for passivating milling cutters according to claim 1, characterized in that: The grinding and polishing mechanism (6) includes a machining head (61) fixedly connected to the worktable body (1) with its top end located between two protective plates (2). The output end of the machining head (61) is fixedly connected to a guide rod (62). The polishing disc (8) is fixedly connected to a guide sleeve (63) at the center of one side near the machining head (61). The polishing disc (8) is slidably sleeved on the outer wall of the guide rod (62) through the guide sleeve (63). The outer wall of the polishing disc (8) is threaded with a mounting bolt (64), and the end of the mounting bolt (64) is threaded inside the guide rod (62).

3. The grinding and polishing device for passivating milling cutters according to claim 2, characterized in that: The upper top of the machining head (61) is symmetrically fixed with two support blocks (611) for supporting the polishing disc (8). The outer walls of the machining head (61) are provided with inner grooves (65) on both sides. The outer walls of the machining head (61) are provided with guide grooves (66) on one side of the inner grooves (65).

4. The grinding and polishing device for passivating milling cutters according to claim 2, characterized in that: Each set of replacement mechanisms (7) includes a first gear (731) and a second gear (79) threaded onto the inner sidewall of the inner groove (65), and the first gear (731) and the second gear (79) mesh and drive each other. A maintenance plate (71) is bolted to the outer wall of the processing head (61) at the position of the inner groove (65). The maintenance plate (71) is used to protect the first gear (731) and the second gear (79). A drive motor (72) is fixedly connected to the side of the maintenance plate (71) away from the processing head (61). A drive rod (73) is fixedly connected to the output end of the drive motor (72), and the end of the drive rod (73) away from the drive motor (72) is fixedly connected to the end of the first gear (731).

5. The grinding and polishing device for passivating milling cutters according to claim 4, characterized in that: The end of the second gear (79) is fixedly connected to a fixing rod (74), and the fixing rod (74) extends to the outer wall of the inspection plate (71). The drive rod (73) and the fixing rod (74) are rotatably sleeved with the inspection plate (71) through a bearing. The outer wall of the extended end of the fixing rod (74) is fixedly sleeved with a rotating bracket (75). The upper top of the rotating bracket (75) is fixedly connected to a hydraulic push rod (76). The telescopic end of the hydraulic push rod (76) is fixedly connected to a sliding push rod (77). The telescopic end of the sliding push rod (77) is fixedly connected to an electric clamp (78) for clamping the polishing disc (8).

6. The grinding and polishing device for passivating milling cutters according to claim 5, characterized in that: The hydraulic push rod (76) is fixedly connected to a guide bracket (761) on the side near the processing head (61). The guide bracket (761) is slidably sleeved inside the guide groove (66). The two sets of replacement mechanisms (7) are used to limit the polishing disc (8). The top of the worktable body (1) is fitted with a chip removal plate (5). The polishing disc (8) installed on the outer wall of the guide rod (62) is located directly above the chip removal plate (5).

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