Flange type quick dismounting device for CNC tool grinder

Abstract

The utility model relates to the technical field of grinding tool, specifically, relate to a kind of CNC tool grinder flange type grinding wheel quick release device, including rack, lifting mechanism, dismounting mechanism and clamping mechanism;Through clamping mechanism effectively prevent flange plate deformation in the process of dismounting, guarantee the machining accuracy of CNC tool grinder.Lifting mechanism and the cooperative action of dismounting mechanism realize the quick dismounting of flange nut, significantly improve work efficiency.The whole process is completed by mechanical device, replace traditional manual operation, not only reduce labour intensity, and through the cooperation of pressure shaft and dismounting wrench ensure that pre-tightening force control is accurate and reliable, it is favorable to keep the overall accuracy and repeat positioning accuracy of flange type grinding wheel assembly.

Description

Technical Field

[0001] This utility model relates to the field of abrasive technology, and more specifically, to a flange-type quick-release device for CNC tool grinders. Background Technology

[0002] A CNC tool grinder is a grinding machine that uses a computer numerical control system for precision control. It is primarily used to manufacture and regrind various complex cutting tools, such as end mills, drills, reamers, taps, and various form tools. Compared to traditional manual tool grinders, CNC tool grinders, through pre-programmed procedures, can precisely control multiple servo axes to perform simultaneous grinding of complex geometries. Its core advantages lie in high precision, high repeatability, high automation, and powerful capabilities for machining complex curved surfaces. To achieve these functions, CNC tool grinders are typically equipped with high-speed, high-precision electric spindles and automatic tool changers, while the flange-type grinding wheel, as the grinding tool at the execution end, is one of the key components for achieving high-performance machining.

[0003] Flange-type grinding wheels typically consist of a flange, grinding wheel, flange cover plate, and flange nut. The flange usually has mounting holes designed to fit the spindle of a CNC tool grinder. During assembly, the grinding wheel is first placed coaxially on the flange, then the flange cover plate is installed, and finally the flange nut is tightened before mounting on the spindle. This modular design helps reduce machining costs. To maintain the machining accuracy of the CNC tool grinder, the grinding wheel needs to be replaced after a certain period of operation or after completing a certain amount of machining. Because the thread preload between the flange nut and the flange is usually quite high, manual disassembly and assembly are still commonly used. This method is not only inefficient but also prone to flange deformation during disassembly and assembly, thus affecting the overall machining accuracy of the machine tool. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a quick-release device for flange-type grinding wheels on CNC tool grinders, designed to provide a device that facilitates the rapid assembly and disassembly of flange-type grinding wheels, thereby ensuring preload and preventing flange deformation.

[0005] A CNC tool grinder flange-type quick-release device according to an embodiment of the present invention includes: frame; A lifting mechanism is provided, wherein the lifting mechanism is provided with a lifting arm, and the lifting arm is movably and adjustablely connected to the frame in the vertical direction; The disassembly and assembly mechanism is mounted on the lifting arm and includes a pressure shaft. The pressure shaft and the lifting arm are movably connected in the vertical direction. A disassembly and assembly wrench is mounted at the lower end of the pressure shaft and is rotatably connected to the pressure shaft. A clamping mechanism is fixedly connected to the frame and located at the lower end of the disassembly wrench. The clamping mechanism is used to clamp the flange of the flange-type grinding wheel.

[0006] According to some embodiments of the present invention, the lifting mechanism includes a lifting plate, a slider, a guide rail, and a drive assembly; the guide rail is fixedly connected to the frame, one side of the lifting plate is fixedly connected to the slider, and the slider is slidably connected to the guide rail; the other side of the lifting plate is fixedly connected to the lifting arm, and the drive assembly is used to drive the lifting plate to move in the vertical direction.

[0007] According to some embodiments of the present invention, the driving assembly includes a lead screw, a transmission pair, and a driving arm; the lead screw is rotatably connected to the frame, the transmission pair is drively connected to the lead screw, the transmission pair is fixedly connected to one end of the driving arm, and the other end of the driving arm is fixedly connected to the lifting plate.

[0008] According to some embodiments of the present invention, a handwheel is provided at the upper end of the lead screw.

[0009] According to some embodiments of the present invention, a rotary drive motor is provided at the upper end of the lead screw.

[0010] According to some embodiments of the present invention, the lifting arm is provided with a slot, the pressure shaft is provided with a limit pin, the lifting arm and the pressure shaft are clearance-fitted, and the limit pin is slidably installed in the slot.

[0011] According to some embodiments of the present invention, the disassembly and assembly mechanism includes a preload spring, which is sleeved on the pressure shaft. The upper end of the preload spring abuts against the lifting arm, and the lower end of the preload spring abuts against the disassembly and assembly wrench.

[0012] According to some embodiments of the present invention, the pressure shaft and the disassembly wrench are rotatably connected by a thrust ball bearing and a deep groove ball bearing.

[0013] According to some embodiments of this utility model, the outer contour of the flange nut corresponding to the flange-type grinding wheel of the disassembly wrench is provided with a snap-fit ​​part.

[0014] According to some embodiments of the present invention, the clamping mechanism includes a clamp, a locking screw, and a force-applying rod. The locking screw passes through the elastic part of the clamp and the fixed part of the clamp and is threadedly connected. The force-applying rod is inserted into the end of the locking screw along the radial direction of the locking screw.

[0015] A CNC tool grinder flange-type quick-release device for grinding wheels according to an embodiment of the present invention has at least the following beneficial effects: According to the present invention, the CNC tool grinder flange-type quick-release device includes a frame, a lifting mechanism, a disassembly and assembly mechanism, and a clamping mechanism. The clamping mechanism effectively prevents deformation of the flange during disassembly and assembly, ensuring the machining accuracy of the CNC tool grinder. The coordinated action of the lifting mechanism and the disassembly and assembly mechanism enables rapid disassembly and assembly of the flange nut, significantly improving work efficiency. The entire process is completed by a mechanical device, replacing traditional manual operation. This not only reduces labor intensity but also ensures precise and reliable preload control through the cooperation of the pressure shaft and the disassembly and assembly wrench, which is beneficial for maintaining the overall accuracy and repeatability of the flange-type grinding wheel assembly. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 For the present utility model Figure 2 A magnified schematic diagram of the local structure at point A; Figure 4 This is a cross-sectional structural schematic diagram from another perspective of the present invention; Figure 5 This is an exploded structural diagram of the clamping mechanism of this utility model; Figure 6 This is a schematic diagram of the structure of the disassembly and assembly wrench of this utility model; Figure 7 This is a schematic diagram of a flange-type grinding wheel according to the present invention.

[0017] In the picture: 100 - Flanged grinding wheel, 110 - Flange, 120 - Grinding wheel disc, 130 - Flange cover plate, 140 - Flange nut; 200 racks; 300-Lifting mechanism, 310-Lifting arm, 311-Slot, 320-Lifting plate, 330-Slider, 340-Guide rail, 350-Drive assembly, 351-Lead screw, 352-Transmission pair, 353-Drive arm, 354-Handwheel; 400-Disassembly and assembly mechanism, 410-Pressure shaft, 411-Limit pin, 420-Disassembly and assembly wrench, 421-Snap-fit ​​part, 430-Preload spring, 440-Thrust ball bearing, 450-Deep groove ball bearing; 500-Clamping mechanism, 510-Clamping clamp, 511-Fixing part, 512-Elastic part, 520-Locking screw, 530-Force bar. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0019] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] In the description of this utility model, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features or their sequential relationship.

[0021] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0022] The flange-type grinding wheel 100 includes a flange 110, a grinding wheel 120, a flange cover 130, and a flange nut 140. The flange 110 is usually designed with mounting holes that are compatible with the spindle of a CNC tool grinder. During assembly, the grinding wheel 120 is first placed coaxially on the flange 110, then the flange cover 130 is installed, and finally the flange nut 140 is tightened and installed on the spindle.

[0023] Reference Figures 1 to 7As shown, this utility model discloses a quick-release device for a flange-type grinding wheel 100 of a CNC tool grinder, including a frame 200, a lifting mechanism 300, a disassembly and assembly mechanism 400, and a clamping mechanism 500. The lifting mechanism 300 is provided with a lifting arm 310, which is movably and adjustablely connected to the frame 200 in the vertical direction. The disassembly and assembly mechanism 400 is mounted on the lifting arm 310 and includes a pressure shaft 410, which is movably connected to the lifting arm 310 in the vertical direction. A disassembly and assembly wrench 420 is provided at the lower end of the pressure shaft 410, and is rotatably connected to the pressure shaft 410. The clamping mechanism 500 is fixedly connected to the frame 200 and located at the lower end of the disassembly and assembly wrench 420. The clamping mechanism 500 is used to clamp the flange 110 of the flange-type grinding wheel 100. Specifically, in this embodiment, the clamping mechanism 500 reliably fixes the flange 110 of the flange-type grinding wheel 100. Subsequently, the lifting mechanism 300 drives the lifting arm 310 to move vertically and adjust it to the predetermined height. The disassembly / assembly mechanism 400, mounted on the lifting arm 310, then actuates, causing the pressure shaft 410 to lower its lower end, causing the wrench 420 to engage with the flange nut 140. The pressure shaft 410 is vertically movable and provides axial pressure, while the disassembly / assembly wrench 420 can rotate relative to the pressure shaft 410, thereby rotating the flange nut 140 under sufficient axial preload, completing the disassembly or installation of the flange-type grinding wheel 100. This design effectively prevents deformation of the flange 110 during disassembly / assembly through the clamping mechanism 500, ensuring the machining accuracy of the CNC tool grinder. The coordinated action of the lifting mechanism 300 and the disassembly / assembly mechanism 400 enables rapid disassembly / assembly of the flange nut 140, significantly improving work efficiency. The entire process is completed by mechanical devices, replacing traditional manual operations. This not only reduces labor intensity, but also ensures precise and reliable preload control through the cooperation of pressure shaft 410 and disassembly wrench 420, which helps maintain the overall accuracy and repeatability of the flange-type grinding wheel 100 assembly.

[0024] In some embodiments of this utility model, the lifting mechanism 300 includes a lifting plate 320, a slider 330, a guide rail 340, and a drive assembly 350. The guide rail 340 is fixedly connected to the frame 200, one side of the lifting plate 320 is fixedly connected to the slider 330, and the slider 330 is slidably connected to the guide rail 340. The other side of the lifting plate 320 is fixedly connected to the lifting arm 310. The drive assembly 350 is used to drive the lifting plate 320 to move vertically. Specifically, in this embodiment, the guide rail 340 is fixedly installed on the frame 200, and the slider 330 is slidably connected to the guide rail 340. One side of the lifting plate 320 is fixedly connected to the slider 330, and the other side is rigidly connected to the lifting arm 310. The drive assembly 350 provides a vertical driving force to the entire lifting plate 320, thereby driving the lifting arm 310 and the disassembly / assembly mechanism 400 mounted thereon to achieve stable overall lifting movement. The design of this structure ensures that the disassembly and assembly mechanism 400 can accurately reach the predetermined height position during operation. Its advantage lies in the fact that the cooperation between the guide rail 340 and the slider 330 provides good rigidity and linearity of movement, effectively eliminating the off-center loading and jamming that may occur in traditional methods, thus laying a stable motion foundation for applying precise axial preload to the pressure shaft 410 in subsequent disassembly and assembly operations.

[0025] In some embodiments of this utility model, the drive assembly 350 includes a lead screw 351, a transmission pair 352, and a drive arm 353. The lead screw 351 is rotatably connected to the frame 200, the transmission pair 352 is drively connected to the lead screw 351, one end of the transmission pair 352 is fixedly connected to the drive arm 353, and the other end of the drive arm 353 is fixedly connected to the lifting plate 320. Specifically, in this embodiment, the drive assembly 350 achieves power transmission through the synergistic action of the lead screw 351, the transmission pair 352, and the drive arm 353. The lead screw 351 is rotatably connected to the frame 200, which can convert rotational motion into linear displacement. The transmission pair 352 meshes with the lead screw 351, converting the rotational motion of the lead screw 351 into its own linear motion. One end of the drive arm 353 is fixedly connected to the transmission pair 352, and the other end is rigidly connected to the lifting plate 320, thereby reliably transmitting linear thrust to the lifting plate 320. Through the design of this structure, the lead screw 351 transmission has precise displacement control and self-locking characteristics, ensuring that the lifting plate 320 is accurately positioned and remains stable at any location. This rigid transmission chain allows the drive assembly 350 to provide a smooth and reliable driving force to the lifting mechanism 300, effectively avoiding slippage problems that may exist in traditional hydraulic or pneumatic drives.

[0026] In some embodiments of this utility model, a handwheel 354 is provided at the upper end of the lead screw 351. Specifically, in this embodiment, by providing a handwheel 354 at the upper end of the lead screw 351, it is convenient to manually control the transmission of the lead screw 351 through the handwheel 354, thereby reducing the investment cost of the equipment.

[0027] In some embodiments of this utility model, a rotary drive motor is provided at the upper end of the lead screw 351. Specifically, in this embodiment, a rotary drive motor is used at the upper end of the lead screw 351. The rotary drive motor can control the rotation of the lead screw 351, which has the advantages of high precision and high automation.

[0028] In some embodiments of this utility model, the lifting arm 310 is provided with a slot 311, and the pressure shaft 410 is provided with a limiting pin 411. The lifting arm 310 and the pressure shaft 410 are clearance-fitted, and the limiting pin 411 is slidably installed in the slot 311. Further, the disassembly / assembly mechanism 400 includes a preload spring 430, which is sleeved on the pressure shaft 410. The upper end of the preload spring 430 abuts against the lifting arm 310, and the lower end of the preload spring 430 abuts against the disassembly / assembly wrench 420. Specifically, in this embodiment, the lifting arm 310 and the pressure shaft 410 achieve relative movement through the cooperation of the slot 311 and the limiting pin 411. The limiting pin 411 is fixed to the pressure shaft 410 and embedded in the slot 311 of the lifting arm 310, allowing the pressure shaft 410 to slide vertically under the constraint of the lifting arm 310. In the disassembly / assembly mechanism 400, the preload spring 430 is sleeved on the pressure shaft 410, with its upper end abutting against the lifting arm 310 and its lower end acting on the disassembly / assembly wrench 420, thereby providing a continuous and controllable axial preload force to the pressure shaft 410. With this design, the fit between the slot 311 and the limit pin 411 ensures both the vertical guiding accuracy of the pressure shaft 410 and effectively limits its rotation. The preload spring 430 can stably transmit and maintain the set axial pressure, ensuring that the disassembly / assembly wrench 420 always has sufficient clamping force when rotating the flange nut 140. This combined structure significantly improves the stability and controllability of the disassembly / assembly process, effectively preventing thread damage and flange 110 deformation caused by insufficient axial force or misalignment.

[0029] In some embodiments of this utility model, the pressure shaft 410 and the release wrench 420 are rotatably connected by a thrust ball bearing 440 and a deep groove ball bearing 450. Specifically, in this embodiment, the pressure shaft 410 and the release wrench 420 are rotatably connected by a composite load-bearing structure via the thrust ball bearing 440 and the deep groove ball bearing 450. The thrust ball bearing 440 mainly bears the axial load applied by the preload spring 430, ensuring that the pressure shaft 410 can maintain smooth transmission even when a large axial preload is applied; the deep groove ball bearing 450 bears both radial load and part of the axial load, providing stable radial support for the release wrench 420 when rotating the flange nut 140. The advantage of this dual bearing configuration is that it decouples axial pressure transmission from rotational motion. The thrust ball bearing 440 ensures rotational efficiency under high axial preload, effectively preventing jamming; the deep groove ball bearing 450 ensures the radial accuracy and smooth operation of the release wrench 420 during torque transmission. This structure significantly improves the force control accuracy and reliability of the flange nut 140 during assembly and disassembly, fundamentally avoiding thread damage or spindle accuracy loss caused by uneven force.

[0030] In some embodiments of this utility model, the disassembly wrench 420 is provided with a snap-fit ​​portion 421 corresponding to the outer contour of the flange nut 140 of the flange-type grinding wheel 100. It can be understood that when the flange nut 140 is an external hexagonal nut, the snap-fit ​​portion 421 is correspondingly designed as an internal hexagonal sleeve; when the flange nut 140 is other non-standard structures, the snap-fit ​​portion 421 is set as a matching structure corresponding to its outer contour shape.

[0031] In some embodiments of this utility model, the clamping mechanism 500 includes a clamp 510, a locking screw 520, and a force-applying rod 530. The locking screw 520 is threaded through the elastic part 512 and the fixing part 511 of the clamp 510. The force-applying rod 530 is inserted radially into the end of the locking screw 520.

[0032] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A flange-type quick-release device for grinding wheels on a CNC tool grinder, characterized in that, include: Rack (200); A lifting mechanism (300) is provided with a lifting arm (310), which is movably and adjustablely connected to the frame (200) in the vertical direction; A disassembly and assembly mechanism (400) is provided on the lifting arm (310). The disassembly and assembly mechanism (400) is provided with a pressure shaft (410). The pressure shaft (410) and the lifting arm (310) are movably connected in the vertical direction. A disassembly and assembly wrench (420) is provided at the lower end of the pressure shaft (410). The disassembly and assembly wrench (420) and the pressure shaft (410) are rotatably connected. A clamping mechanism (500) is fixedly connected to the frame (200) and located at the lower end of the disassembly wrench (420). The clamping mechanism (500) is used to clamp the flange (110) of the flange-type grinding wheel (100).

2. The CNC tool grinder flange-type quick-release device for grinding wheels according to claim 1, characterized in that, The lifting mechanism (300) includes a lifting plate (320), a slider (330), a guide rail (340), and a drive assembly (350); the guide rail (340) is fixedly connected to the frame (200), one side of the lifting plate (320) is fixedly connected to the slider (330), and the slider (330) is slidably connected to the guide rail (340); the other side of the lifting plate (320) is fixedly connected to the lifting arm (310), and the drive assembly (350) is used to drive the lifting plate (320) to move in the vertical direction.

3. The CNC tool grinder flange-type quick-release device for grinding wheels according to claim 2, characterized in that, The drive assembly (350) includes a lead screw (351), a transmission pair (352), and a drive arm (353); the lead screw (351) is rotatably connected to the frame (200), the transmission pair (352) is drively connected to the lead screw (351), one end of the transmission pair (352) is fixedly connected to the drive arm (353), and the other end of the drive arm (353) is fixedly connected to the lifting plate (320).

4. The CNC tool grinder flange-type quick-release device for grinding wheels according to claim 3, characterized in that, A handwheel (354) is provided at the upper end of the lead screw (351).

5. The CNC tool grinder flange-type quick-release device for grinding wheels according to claim 3, characterized in that, A rotary drive motor is provided at the upper end of the lead screw (351).

6. The CNC tool grinder flange-type quick-release device for grinding wheels according to claim 1, characterized in that, The lifting arm (310) is provided with a slot (311), and the pressure shaft (410) is provided with a limit pin (411). The lifting arm (310) and the pressure shaft (410) are clearance-fitted, and the limit pin (411) is slidably installed in the slot (311).

7. The CNC tool grinder flange-type quick-release device for grinding wheels according to claim 6, characterized in that, The disassembly and assembly mechanism (400) includes a preload spring (430), which is sleeved on the pressure shaft (410). The upper end of the preload spring (430) abuts against the lifting arm (310), and the lower end of the preload spring (430) abuts against the disassembly and assembly wrench (420).

8. The CNC tool grinder flange-type quick-release device for grinding wheels according to claim 1, characterized in that, The pressure shaft (410) and the disassembly wrench (420) are rotatably connected by a thrust ball bearing (440) and a deep groove ball bearing (450).

9. The CNC tool grinder flange-type quick-release device for grinding wheels according to claim 1, characterized in that, The assembly / disassembly wrench (420) has a snap-fit ​​part (421) on the outer contour of the flange nut (140) corresponding to the flange grinding wheel (100).

10. The CNC tool grinder flange-type quick-release device for grinding wheels according to claim 1, characterized in that, The clamping mechanism (500) includes a clamp (510), a locking screw (520), and a force-applying rod (530). The locking screw (520) is threaded through the elastic part (512) and the fixing part (511) of the clamp (510). The force-applying rod (530) is inserted radially into the end of the locking screw (520).

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