A knife arm structure for an automatic knife sharpening apparatus

Abstract

The utility model provides a kind of knife arm structure for automatic knife grinding equipment, including knife grinding device and knife arm assembly installed in knife grinding equipment, knife arm assembly includes first motor linear module installed in knife grinding equipment, the rotor surface of first motor linear module is equipped with second motor linear module, the rotor surface of second motor linear module is equipped with base, the top of base is equipped with the clamping mechanism of being able to clamp arbitrary length cutter, after drill bit cutter is inserted into clamping hole, drill handle can be extended into hollow stem while cutter clamping block directly clamps drill body of drill bit, further make the knife arm structure can clamp and fix different length drill bit, and by reduction motor directly drive driving pulley rotation, while transmission belt cooperation driven pulley can synchronously drive hollow stem rotation, this kind of mode makes drill bit rotation polishing process, the knife arm structure transmission is stable, positioning accuracy is high, to more can improve drill bit polishing effect.

Description

Technical Field

[0001] This utility model belongs to the technical field of knife sharpening equipment, and specifically relates to a knife arm structure for an automatic knife sharpening device. Background Technology

[0002] A drill bit is a device used to drill holes in workpieces. The drill bit manufacturing process requires grinding the drill bit tip to effectively improve the drill bit's sharpness and drilling efficiency. Grinding the drill bit tip requires a grinding machine. Traditional grinding machines use a tool arm to clamp the drill bit shank and then grind the tip. However, the traditional tool arm structure can only clamp the drill bit shank. Therefore, when grinding longer drill bits, the drill bit body extends outwards for a long length without support, resulting in drill bit body wobbling and affecting the grinding effect. Moreover, the traditional tool arm structure has poor transmission stability, leading to low precision when rotating the drill bit for grinding. Based on this, we propose a tool arm mechanism that can be used to grind drill bits of different lengths. Utility Model Content

[0003] The purpose of this invention is to provide a blade arm structure for an automatic blade sharpening device, which aims to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a knife arm structure for an automatic knife sharpening device, comprising a knife sharpening device and a knife arm assembly installed in the knife sharpening device, the knife arm assembly comprising a first motor linear module installed in the knife sharpening device, a second motor linear module mounted on the moving surface of the first motor linear module, a base mounted on the moving surface of the second motor linear module, and a clamping mechanism capable of clamping a knife of any length mounted on the top of the base; The sharpening device includes a third motor linear module installed in the sharpening equipment. The moving surface of the third motor linear module is equipped with a sharpening component. A first motor linear module is installed on one side of the third motor linear module. The first motor linear module works with the second motor linear module to realize the movement of the clamping mechanism along the X and Y axes. The third motor linear module can realize the lifting and lowering of the sharpening component along the Z axis.

[0005] As a preferred technical solution of this utility model, the clamping mechanism includes a mounting base fixedly installed on the surface of the base. A bearing is embedded in one side of the mounting base, and a protective cover is fixedly installed on the other side of the mounting base. A hollow rod is inserted into the bearing, and the surface of the hollow rod is fixedly connected to the inner ring of the bearing. An installation head is integrally provided at one end of the hollow rod. The inner cavity of the installation head is coaxial with and communicates with the inner cavity of the hollow rod. A reduction motor is fixedly connected to the surface of the protective cover. The output shaft of the reduction motor extends into the protective cover and is fixedly connected to the driving pulley. A driven pulley is fixedly connected to the surface of the hollow rod on the side of the reduction motor. A transmission belt is installed between the driving pulley and the driven pulley. A tool clamping block is installed inside the installation head, and a locking nut is threaded onto the end of the installation head.

[0006] As a preferred technical solution of this utility model, the tool clamping block has a clamping hole in the middle, the clamping hole is coaxially arranged with the inner cavity of the hollow rod, the surface of the tool clamping block has a plurality of shrinking grooves, and the end of the tool clamping block has a wedge-shaped slope.

[0007] As a preferred technical solution of this utility model, dust covers are installed on the surfaces of the first motor linear module, the second motor linear module and the third motor linear module.

[0008] As a preferred technical solution of this utility model, both the driving pulley and the driven pulley are synchronous pulleys, and the transmission belt is a synchronous belt.

[0009] As a preferred technical solution of this utility model, the first motor linear module, the second motor linear module, the third motor linear module and the geared motor are all electrically connected to the control system of the grinding equipment.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: Since the clamping hole of the tool holder is coaxial with the inner cavity of the hollow rod, after the drill bit is inserted into the clamping hole, the drill shank of the drill bit can extend into the hollow rod, and the tool holder directly clamps the drill body of the drill bit. This allows the tool arm structure to clamp and fix drill bits of different lengths. The drive pulley is directly driven to rotate by the reduction motor, and the transmission belt, in conjunction with the driven pulley, can synchronously drive the hollow rod to rotate. This method makes the transmission of the tool arm structure stable and the positioning accuracy high during the drill bit rotation and grinding process, thereby improving the drill bit grinding effect. Attached Figure Description

[0011] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the clamping mechanism in this utility model; Figure 3 This is a schematic diagram of the disassembled structure of the clamping mechanism in this utility model; Figure 4 This is a schematic diagram of the hollow rod, the tool clamping block, and the locking nut in this utility model.

[0012] In the diagram: 1. Sharpening device; 11. Third motor linear module; 12. Sharpening assembly; 2. Tool arm assembly; 21. First motor linear module; 22. Second motor linear module; 23. Base; 24. Clamping mechanism; 241. Mounting seat; 242. Bearing; 243. Protective cover; 244. Hollow rod; 245. Mounting head; 246. Gear motor; 247. Drive pulley; 248. Driven pulley; 249. Transmission belt; 2410. Tool clamping block; 2411. Locking nut; 2412. Shrinkage groove; 2413. Wedge-shaped slope; 3. Dust cover. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] Please see Figures 1-4 The present invention provides the following technical solution: a knife arm structure for an automatic knife sharpening device, including a knife sharpening device 1 and a knife arm assembly 2 installed in the knife sharpening device. The knife arm assembly 2 includes a first motor linear module 21 installed in the knife sharpening device. A second motor linear module 22 is installed on the moving surface of the first motor linear module 21. A base 23 is installed on the moving surface of the second motor linear module 22. A clamping mechanism 24 capable of clamping a knife of any length is installed at the top of the base 23.

[0015] In this embodiment, the sharpening device 1 includes a third motor linear module 11 installed in the sharpening equipment. A sharpening assembly 12 is installed on the moving surface of the third motor linear module 11. A first motor linear module 21 is installed on one side of the third motor linear module 11. The first motor linear module 21 cooperates with the second motor linear module 22 to realize the movement of the clamping mechanism 24 along the X-axis and Y-axis. The third motor linear module 11 can realize the lifting and lowering of the sharpening assembly 12 along the Z-axis.

[0016] Specifically, the first motor linear module 21, together with the second motor linear module 22, can drive the clamping mechanism 24 with the drill bit attached to move along the X and Y axes, while the third motor linear module 11 can realize the lifting and lowering of the grinding assembly 12 along the Z axis. Therefore, the grinding assembly 12 can better grind the end of the drill bit.

[0017] In this embodiment, the clamping mechanism 24 includes a mounting base 241 fixedly mounted on the surface of the base 23. A bearing 242 is embedded in one side of the mounting base 241, and a protective cover 243 is fixedly mounted on the other side of the mounting base 241. A hollow rod 244 is inserted into the bearing 242, and the surface of the hollow rod 244 is fixedly connected to the inner ring of the bearing 242. A mounting head 245 is integrally provided at one end of the hollow rod 244. The inner cavity of the mounting head 245 is coaxial with and communicates with the inner cavity of the hollow rod 244. A geared motor 246 is fixedly connected to the surface of the protective cover 243. The output shaft of the geared motor 246 extends into the protective cover 243 and is fixedly connected to the drive pulley 247. A driven pulley 248 is fixedly connected to the surface of the hollow rod 244 located on one side of the geared motor 246. A transmission belt 249 is installed between the drive pulley 247 and the driven pulley 248. A tool clamp 2410 is installed inside the mounting head 245. A locking nut 2411 is threaded onto the end of the mounting head 245.

[0018] Specifically, the drive pulley 247 is driven to rotate by the geared motor 246, and the driven pulley 248 drives the hollow rod 244 to rotate under the action of the transmission belt 249. The inner cavity of the mounting head 245 is coaxial and connected with the inner cavity of the hollow rod 244. Therefore, when the drill bit is clamped and fixed by the tool clamping block 2410, the drill shank of the drill bit can extend into the hollow rod 244 or even to the outside of the hollow rod 244. The locking nut 2411 can drive the tool clamping block 2410 to clamp the drill body of the drill bit. Therefore, in this way, the clamping mechanism 24 can stably clamp drill bits of different lengths. When the drill bit end is ground by the grinding assembly 12, there will be no shaking due to the long exposed length of the drill body, thereby improving the grinding effect of the drill bit.

[0019] In this embodiment, a clamping hole is provided in the middle of the tool clamping block 2410, and the clamping hole is coaxially arranged with the inner cavity of the hollow rod 244. A plurality of tightening grooves 2412 are provided on the surface of the tool clamping block 2410, and a wedge-shaped slope 2413 is provided at the end of the tool clamping block 2410.

[0020] Specifically, since the clamping hole is coaxially set with the inner cavity of the hollow rod 244, the drill shank of the drill bit can be inserted into the hollow rod 244 through the clamping hole. Under the action of the shrinking groove 2412, the tool clamping block 2410 is divided into multiple clamping parts. When the operator tightens the locking nut 2411, the tool clamping block 2410 can effectively clamp the drill body of the drill bit under the action of the wedge-shaped slope 2413.

[0021] In this embodiment, dust covers 3 are installed on the surfaces of the first motor linear module 21, the second motor linear module 22, and the third motor linear module 11.

[0022] Specifically, the dust cover 3 effectively prevents the debris generated during drill bit grinding from entering the first motor linear module 21, the second motor linear module 22, and the third motor linear module 11, thereby avoiding affecting the movement of the movers of the first motor linear module 21, the second motor linear module 22, and the third motor linear module 11.

[0023] In this embodiment, both the driving pulley 247 and the driven pulley 248 are synchronous pulleys, and the transmission belt 249 is a synchronous belt.

[0024] Specifically, in this way, when the geared motor 246 drives the drive pulley 247 to rotate, the driven pulley 248 can be driven to rotate synchronously under the action of the transmission belt 249. Therefore, this method enables the clamping mechanism 24 to have stable transmission, and it also makes the clamping mechanism 24 more precise when driving the drill bit to rotate and grind.

[0025] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A blade arm structure for an automatic blade sharpening device, comprising a sharpening device (1) and a blade arm assembly (2) installed in the sharpening device, characterized in that: The blade arm assembly (2) includes a first motor linear module (21) installed in the grinding equipment. A second motor linear module (22) is installed on the moving surface of the first motor linear module (21). A base (23) is installed on the moving surface of the second motor linear module (22). A clamping mechanism (24) capable of clamping a blade of any length is installed at the top of the base (23). The sharpening device (1) includes a third motor linear module (11) installed in the sharpening equipment. A sharpening assembly (12) is installed on the moving surface of the third motor linear module (11). A first motor linear module (21) is installed on one side of the third motor linear module (11). The first motor linear module (21) cooperates with the second motor linear module (22) to realize the movement of the clamping mechanism (24) along the X-axis and Y-axis. The third motor linear module (11) can realize the lifting and lowering of the sharpening assembly (12) along the Z-axis.

2. The tool arm structure for an automatic tool sharpening device according to claim 1, characterized in that: The clamping mechanism (24) includes a mounting base (241) fixedly mounted on the surface of the base (23). A bearing (242) is embedded in one side of the mounting base (241), and a protective cover (243) is fixedly mounted on the other side of the mounting base (241). A hollow rod (244) is inserted into the bearing (242), and the surface of the hollow rod (244) is fixedly connected to the inner ring of the bearing (242). One end of the hollow rod (244) is integrally provided with a mounting head (245). The inner cavity of the mounting head (245) is coaxial with and communicates with the inner cavity of the hollow rod (244). A geared motor (246) is fixedly connected to the surface of the protective cover (243). The output shaft of the geared motor (246) extends into the protective cover (243) and is fixedly connected to the drive pulley (247). A driven pulley (248) is fixedly connected to the surface of the hollow rod (244) located on one side of the geared motor (246). A transmission belt (249) is installed between the drive pulley (247) and the driven pulley (248). A tool clamp (2410) is installed inside the mounting head (245). A locking nut (2411) is threaded at the end of the mounting head (245).

3. The tool arm structure for an automatic tool sharpening device according to claim 2, characterized in that: The tool clamping block (2410) has a clamping hole in the middle, which is coaxially arranged with the inner cavity of the hollow rod (244). The surface of the tool clamping block (2410) has several tightening grooves (2412), and the end of the tool clamping block (2410) has a wedge-shaped slope (2413).

4. The blade arm structure for an automatic knife sharpening device according to claim 1, characterized in that: The surfaces of the first motor linear module (21), the second motor linear module (22) and the third motor linear module (11) are all equipped with dust covers (3).

5. The tool arm structure for an automatic tool sharpening device according to claim 2, characterized in that: Both the driving pulley (247) and the driven pulley (248) are synchronous pulleys, and the transmission belt (249) is a synchronous belt.

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