A CNC tool grinding device

Abstract

The present application discloses a CNC tool grinding device, which belongs to the technical field of tool grinding. It mainly includes: a workbench; a grinding mechanism; a tool clamping mechanism, which is arranged on one side of the grinding mechanism, and the tool clamping mechanism has: a fixed plate; a tool box, which is installed on the upper end of the fixed plate, and a slot is provided through the bottom of the tool box; a driving cylinder, which is installed on the upper end of the fixed plate; a push plate, which is installed on the output shaft of the driving cylinder, and the push plate includes a lower plate slidably connected to the upper part of the fixed plate, and an upper plate located above the lower plate, and one end of the lower plate is provided with a sharp corner, which is inclined downward in the direction close to the tool box; a clamping cylinder, which is installed on one side of the tool box; a moving mechanism; a positioning mechanism, and the positioning mechanism has a stopper. The CNC tool grinding device of the present application can achieve the effect of not manually placing each group of tools to be ground flush before grinding the tool, reducing the workload of the staff and shortening the replacement time of the grinding tool.

Description

Technical Field

[0001] The present application relates to the technical field of tool grinding, and in particular to a numerically controlled tool grinding device. Background Art

[0002] CNC tools are tools used for cutting in mechanical manufacturing. CNC tools are usually manufactured using CNC technology. This type of tool uses digital and automated precision processing methods in the design and production process. CNC tools are widely used in modern manufacturing.

[0003] Grinding device is a mechanical device used to process the surface of metal workpieces to remove materials, improve surface finish, improve geometric accuracy and surface quality. Such devices usually include grinders, grinding machines, grinding machines, etc. Grinding devices usually have advanced computer-aided design and computer-aided manufacturing software to ensure that the size, shape and surface quality of the metal workpiece to be ground meet extremely high precision standards;

[0004] When CNC tools are manufactured, grinding devices are usually used to grind the CNC tools in order to accurately adjust the grinding parameters and achieve high-precision and high-efficiency tool grinding.

[0005] In order to meet the requirements of high-precision and complex-shaped material processing, CNC tools in the form of blades are usually required to process the materials;

[0006] However, when grinding blade-type tools, since the cutting edge shapes of blade-type tools are complex and diverse, in order to ensure that the tools maintain the correct grinding angle and cutting edge position during grinding, each group of tools to be ground needs to be manually placed flush before grinding to ensure that the cutting edge is qualified after grinding. This not only increases the workload of the staff, but also prolongs the replacement time of the tools to be ground. If the tools are not completely flush, the scrap rate of tool grinding will also increase. Therefore, it is necessary to provide a CNC tool grinding device to solve the above problems.

[0007] It should be noted that the above information disclosed in this background technology section is only for understanding the background technology of the present application concept, and therefore, it may contain information that does not constitute the prior art. Summary of the invention

[0008] Based on the above problems existing in the prior art, the problem to be solved by the present application is: to provide a CNC tool grinding device, which can achieve the effect of not having to manually place each group of tools to be ground flush before grinding, thereby reducing the workload of the staff and shortening the replacement time of the grinding tools.

[0009] The technical solution adopted by the present application to solve the technical problem is: a CNC tool grinding device, comprising:

[0010] Workbench;

[0011] A grinding mechanism, the grinding mechanism having a grinding knife;

[0012] A tool clamping mechanism, which is arranged on one side of the grinding mechanism, is used to clamp and fix the tool to be processed, and the grinding mechanism is used to grind the CNC tool after it is fixed. The tool clamping mechanism has:

[0013] Fixed plate;

[0014] A knife box is installed on the upper end of the fixed plate, and a slot is formed through the bottom of the knife box;

[0015] A driving cylinder is installed on the upper end of the fixing plate, and is located on a side of the knife box away from the knife sharpening;

[0016] A push plate, the push plate is mounted on the output shaft of the driving cylinder, the push plate comprises a lower plate slidably connected to the upper part of the fixing plate, and an upper plate located above the lower plate, one end of the lower plate is provided with a sharp corner, and the sharp corner is arranged to be inclined downward in a direction close to the knife box;

[0017] A clamping cylinder, which is installed at one side of the tool box and is used to clamp and fix the grinding tool;

[0018] A moving mechanism, which is arranged at the lower end of the fixed plate and is used to adjust the position of the knife clamping mechanism;

[0019] A positioning mechanism is located at one side of the grinding mechanism and has a stopper, and one end face of the stopper facing the moving mechanism is a calibration surface, which is flush with the height of the surface to be processed of the tool and corresponds to each other.

[0020] Furthermore, a convex strip is fixedly installed on the upper end of one side of the lower plate close to the connecting plate, the height of the convex strip is consistent with the thickness of the upper plate, and the opposite surfaces of the convex strip and the upper plate are provided with repelling magnet sheets. A movable groove is opened on the lower plate, and a sliding column is slidably connected in the movable groove. The sliding column is fixedly installed on the upper plate, and the sliding column is located in the middle part of the movable groove.

[0021] Furthermore, a connecting plate is fixedly installed on the upper end of the fixing plate, a sliding groove is opened in the middle of the connecting plate, a sliding plate is slidably connected in the sliding groove, a fixing ring is fixedly installed on the upper end of the sliding plate, an extension rod is fixedly installed on the output shaft of the driving cylinder, and the fixing ring is sleeved on the extension rod;

[0022] A magnet ring is fixedly mounted on the outer wall of the extension rod, and the magnet ring is arranged on the inner wall of the fixing ring. A magnet is also mounted on the inner wall of the fixing ring, and the magnet and the magnet ring attract each other.

[0023] Furthermore, a driving plate is fixedly mounted on one end of the upper plate, the driving plate passes through the convex strip and the connecting plate, and the other end of the driving plate is fixed on the sliding plate.

[0024] Furthermore, a fixed cover is fixedly installed on one end of the connecting plate close to the push plate, and the fixed cover is located directly above the driving plate. The fixed cover is configured to be a first section and a second section, the first section is fixed to the connecting plate, the second section is connected to the other end of the first section, the height of the first section is higher than the height of the second section, a magnet sheet is installed on the lower end surface of the first section, an installation groove is opened through the driving plate, a movable plate is slidably connected in the installation groove, a magnet sheet is installed on the lower end surface of the first section, and the upper end of the movable plate is configured to be made of magnetic material.

[0025] Furthermore, the movable plate is slidably connected to a card plate inside, an inclined plate is provided at the lower end of the card plate, the inclined surface of the inclined plate faces the convex strip, a compression spring is fixedly installed between the card plate and the movable plate, and a fixing groove is provided on the upper end surface of the lower plate, and the fixing groove cooperates with the inclined plate.

[0026] Furthermore, a first slide groove is vertically opened at the upper end of the slide plate, and a clamping rod is rotatably connected to the upper end of the connecting plate. A spring pin is fixedly installed at the other end of the clamping rod, and the spring pin is located inside the first slide groove. A second slide groove is opened on the side of one end of the first slide groove close to the driving cylinder, and a first arc angle is set at the connection between the second slide groove and the first slide groove. The depth of the first arc angle is consistent with the depth of the second slide groove, and the depth of the first slide groove is less than the depth of the second slide groove and forms a depth difference.

[0027] Furthermore, a third slide groove is opened on the side of one end of the second slide groove away from the first slide groove, and a corner is arranged at the connection between the third slide groove and the second slide groove, and the depth of the corner is consistent with the depth of the third slide groove, and the depth of the second slide groove is less than the depth of the third slide groove and forms a depth difference.

[0028] Furthermore, a fourth slide groove is provided on a side of the third slide groove away from the second slide groove, the fourth slide groove is divided into a first groove and a second groove, the depth of the fourth slide groove gradually decreases from the first groove to the second groove, a second arc angle is provided at the connection between the fourth slide groove and the third slide groove, the depth of the second arc angle is consistent with the depth of the first groove of the fourth slide groove, the depth of the third slide groove is less than the depth of the first groove of the fourth slide groove and forms a depth difference, the second groove of the fourth slide groove is obliquely connected to the first slide groove, and the depth of the second groove of the fourth slide groove is less than the depth of the first slide groove.

[0029] Furthermore, a fixed seat is fixedly installed on the upper end of the workbench, and a clamp is fixedly installed on the upper end of the fixed seat. The clamp has a base plate fixedly installed on the fixed seat, a baffle is fixedly installed on one end of the base plate away from the moving mechanism, a fixed clamp is fixedly installed on the other end of the base plate, a screw is threadedly connected on the baffle, a movable clamp is fixedly installed on one end of the screw close to the fixed clamp, the movable clamp is slidably connected to the base plate, and a handle is fixedly installed on the other end of the screw.

[0030] The beneficial effect of the present application is that the present application provides a CNC tool grinding device, which is equipped with a tool clamping mechanism, so that there is no need to manually place each group of tools to be ground flush before grinding, thereby reducing the workload of the staff, shortening the replacement time of the grinding tools, improving the pass rate of tool grinding, and ensuring grinding efficiency.

[0031] In addition to the above-described purposes, features and advantages, the present application also has other purposes, features and advantages. The present application will be further described in detail with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The drawings constituting part of the present application are used to provide a further understanding of the present application. The exemplary embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0033] Figure 1 It is an overall schematic diagram of a CNC tool grinding device in this application;

[0034] Figure 2 for Figure 1 A separate enlarged schematic diagram of the moving mechanism;

[0035] Figure 3 for Figure 2 A separate enlarged schematic diagram of the positioning mechanism;

[0036] Figure 4 for Figure 2 Enlarged schematic diagrams of different viewing angles;

[0037] Figure 5 for Figure 4 An enlarged schematic diagram of the middle fixing plate;

[0038] Figure 6 for Figure 5 Partial schematic diagram of the overall structure;

[0039] Figure 7 for Figure 6 A magnified schematic diagram of the middle A area;

[0040] Figure 8 for Figure 6 A partial cross-sectional schematic diagram of a middle push plate;

[0041] Fig. 9 for Figure 8 A magnified schematic diagram of the middle B area;

[0042] Fig.10 for Figure 8 A partially exploded schematic diagram of the overall structure;

[0043] Fig.11 for Figure 6 A partial cross-sectional plan view of the middle push plate;

[0044] Among them, the reference numerals in the figure are:

[0045] 1. Grinding mechanism; 11. Sharpening knife; 12. Support seat; 13. Driving motor; 14. Transmission belt;

[0046] 2. Clamping mechanism; 20. Movable plate; 201. Clamping plate; 202. Compression spring; 203. Inclined plate; 21. Fixed plate; 22. Knife box; 23. Knife storage cover; 231. Slot; 24. Compressing cylinder; 25. Push plate; 251. Upper plate; 252. Lower plate; 253. Raised strip; 254. Driving plate; 255. Moving groove; 256. Sliding column; 257. Mounting groove; 258. Fixed groove; 26. Driving cylinder; 261. Extension rod; 27. Connecting plate; 271. Sliding groove; 272. Clamping rod; 28. Sliding plate; 281. Fixed ring; 282. First slide groove; 283. Second slide groove; 284. Third slide groove; 285. Corner; 286. Fourth slide groove; 29. ​​Fixed cover;

[0047] 3. Moving mechanism; 31. Support frame; 32. Plate frame; 33. Screw rod; 34. Speed ​​reduction motor; 35. Sliding rod; 36. Sliding block; 37. Moving plate;

[0048] 4. Positioning mechanism; 41. Fixed seat; 42. Clamp; 421. Bottom plate; 422. Baffle; 423. Fixed clamp; 424. Movable clamp; 425. Screw; 426. Handle; 43. Stopper;

[0049] 5. Workbench. DETAILED DESCRIPTION

[0050] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0051] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of this application.

[0052] Embodiment 1: This embodiment describes the basic structure and principle of a CNC tool grinding device, specifically:

[0053] like Figure 1-Figure 2 As shown, the present application provides a CNC tool grinding device, which is used to process a CNC tool in the form of a blade (hereinafter referred to as a tool), and the grinding device includes a workbench 5, a grinding mechanism 1 is provided on the upper end of the workbench 5, and a tool clamping mechanism 2 is provided on one side of the grinding mechanism 1, and the tool clamping mechanism 2 is used to clamp and fix the tool to be processed, and then the tool is ground by the grinding mechanism 1 after being fixed;

[0054] The grinding mechanism 1 comprises a support seat 12, a driving motor 13 is fixedly mounted on the upper end of the support seat 12, and a sharpener 11 is arranged on one side of the support seat 12, and a driving shaft (not shown in the figure) is fixedly mounted on one side of the sharpener 11. In the present embodiment, transmission wheels are fixedly mounted on the output shaft of the driving motor 13 and the driving shaft of the sharpener 11, and a transmission belt 14 is connected to the two sets of transmission wheels. Therefore, starting the driving motor 13 can drive the sharpener 11 to rotate via the transmission belt 14, thereby facilitating the grinding of the tool.

[0055] It should be noted that a longitudinal and transverse movement mechanism is also provided at the lower end of the support seat 12, and the longitudinal and transverse movement mechanism is suitable for driving the sharpener 11 away from or close to the tool to be processed on the tool clamping mechanism 2. At the same time, a rotating mechanism is also fixedly installed at the lower end of the longitudinal and transverse movement mechanism, and the rotating mechanism is suitable for adjusting the grinding angle of the sharpener 11. The longitudinal and transverse movement mechanism and the rotating mechanism are conventional technologies in this field. For details, please refer to relevant literature and will not be elaborated here.

[0056] When grinding the cutting tools, the cutting edge of the blade-shaped cutting tools is complex and varied. In order to ensure that the cutting tools maintain the correct grinding angle and cutting edge position during grinding, each group of cutting tools to be ground needs to be manually placed flush before grinding to ensure that the cutting edges are qualified after grinding. This not only increases the workload of the staff, but also prolongs the replacement time of the cutting tools to be ground. If the cutting tools are not completely flush, the scrap rate of the cutting tools will also increase. In order to solve the above problems, specifically:

[0057] like Figure 4 and Figure 5 As shown, the tool clamping mechanism 2 has a fixed plate 21, and a tool placing box 22 is fixedly installed on the upper end of the fixed plate 21. The tool placing box 22 is used to store multiple sets of tools to be processed. A slot hole (not marked in the figure) is opened through the bottom of the tool placing box 22. It should be noted that the height of the slot hole is greater than the thickness of one set of tools and less than the thickness of two sets of tools, so that only one set of tools is limited to pass through the slot hole each time;

[0058] At the same time, a driving cylinder 26 is fixedly installed on the fixed plate 21, and the driving cylinder 26 is located on the side of the knife box 22 away from the knife sharpening 11. In this embodiment, a push plate 25 is fixedly installed at the output shaft of the driving cylinder 26. The thickness of the push plate 25 is consistent with the height of the slot hole of the knife box 22, so the driving cylinder 26 can drive the push plate 25 to push the lowest knife in the knife box 22 out of the knife box 22;

[0059] A knife storage cover 23 is fixedly installed on the side of the knife box 22 close to the knife sharpener 11. The distance between the knife storage cover 23 and the fixed plate 21 is consistent with the slot height of the knife box 22. A slot 231 is provided on the upper end of the knife storage cover 23. At the same time, a clamping cylinder 24 is fixedly installed on one side of the knife box 22 close to the knife storage cover 23. The clamping cylinder 24 is located above the slot 231. The clamping cylinder 24 is used to clamp and fix the tool that reaches the knife storage cover 23. The clamping cylinder 24 is a prior art. Please refer to relevant literature for details, which will not be elaborated here.

[0060] Therefore, starting the driving cylinder 26 can drive the push plate 25 to push into the slot at the bottom of the knife box 22, and push the lowest knife in the knife box 22 out of the knife box 22 and into the knife storage cover 23 until the cutting part of the knife protrudes from the fixing plate 21. At this time, the knife body is still located in the knife storage cover 23, and then the knife to be sharpened is pressed and fixed by the clamping cylinder 24, so that the knife sharpener 11 can grind the knife conveniently.

[0061] like Figure 2 and Figure 4As shown, in order to facilitate the adjustment of the position of the knife clamping mechanism 2, a moving mechanism 3 is provided at the lower end of the fixed plate 21, and the moving mechanism 3 has a support frame 31, and a plate frame 32 is fixedly installed on the upper end of the support frame 31, and the plate frame 32 has a horizontal plate arranged horizontally and vertical plates located on both sides of the horizontal plate, and a screw rod 33 is rotatably connected between the vertical plates of the plate frame 32, and a reduction motor 34 is fixedly installed on one side of the vertical plate of the plate frame 32, and the output shaft of the reduction motor 34 is fixedly installed on one end of the screw rod 33, so starting the reduction motor 34 can drive the screw rod 33 to rotate;

[0062] At the same time, a movable plate 37 is fixedly installed at the lower end of the fixed plate 21, and a nut (not shown) is installed at the lower end of the movable plate 37, and the nut is threadedly connected to the screw rod 33, and two groups of sliding rods 35 are also fixedly installed between the vertical plates of the plate frame 32, and the two groups of sliding rods 35 are located on both sides of the screw rod 33. A slider 36 is slidably connected to the sliding rod 35, and the slider 36 is fixedly installed at the lower end of the movable plate 37. Therefore, starting the reduction motor 34 can drive the screw rod 33 to rotate, and the movable plate 37 can drive the fixed plate 21 and the slider 36 to slide along the sliding rod 35 through the nut, thereby facilitating the adjustment of the position of the knife clamping mechanism 2.

[0063] like Figure 2-Figure 3 As shown, a positioning mechanism 4 is provided on one side of the moving mechanism 3 facing the grinding mechanism 1, and the positioning mechanism 4 is located on one side of the grinding mechanism 1. In this embodiment, a collection box (not shown) is provided between the positioning mechanism 4 and the moving mechanism 3, and the collection box is used to collect the tools after grinding. It should be noted that the positioning mechanism 4 is defined as the position for loading and unloading the tools to be processed and for positioning and fixing before cutting, that is, the initial position of the tool clamping mechanism 2;

[0064] The positioning mechanism 4 has a stopper 43 arranged on one side of the fixed plate 21, and the stopper 43 is used to align and position the tool to be processed. One end surface of the stopper 43 facing the moving mechanism 3 is a calibration surface, and the calibration surface corresponds to the surface to be processed of the tool. A clamping portion (not shown in the figure) is arranged at the lower end of the stopper 43, and a fixed seat 41 is fixedly installed at the upper end of the workbench 5. A clamp 42 is fixedly installed at the upper end of the fixed seat 41, and the clamp 42 is used to clamp and fix the clamping portion of the stopper 43 to keep it in a stable state.

[0065] The clamp 42 has a base plate 421 fixedly mounted on a fixed seat 41, a baffle 422 is fixedly mounted on one end of the base plate 421 away from the moving mechanism 3, a fixed clamp 423 is fixedly mounted on the other end of the base plate 421, and a screw 425 is threadedly connected to the baffle 422, and a movable clamp 424 is mounted on a bearing at one end of the screw 425 close to the fixed clamp 423, the movable clamp 424 is slidably connected to the base plate 421, and a handle 426 is fixedly mounted on the other end of the screw 425. Therefore, during installation, the baffle 43 is first placed and attached to the fixed clamp 423, and then the handle 426 is turned to rotate the screw 425, thereby driving the movable clamp 424 to slide on the base plate 421, and the movable clamp 424 slides toward the fixed clamp 423 until the clamping portion of the baffle 422 is completely fixed.

[0066] In this embodiment, the stop block 43 is flush with the bottom end of the fixed plate 21, and the thickness of the stop block 43 is greater than the thickness of the fixed plate 21. Therefore, when the tool clamping mechanism 2 is in the initial position, the tool to be processed is pushed out and protrudes from the fixed plate 21. At this time, the cutting end of the tool to be processed will just stick to the side of the stop block 43, which is convenient for positioning the tool to be processed.

[0067] In summary: before the tool is sharpened, the tool clamping mechanism 2 is located at one side of the positioning mechanism 4, that is, the initial position of the tool clamping mechanism 2. At this time, the driving cylinder 26 is first started to drive the push plate 25 to slide toward the tool box 22, and the tool at the bottom of the tool box 22 is pushed into the tool storage cover 23 until the tool protrudes from the fixed plate 21, and the surface to be processed of the tool is attached to the calibration surface of the stopper 43;

[0068] When the surface to be processed of the tool is attached to the calibration surface of the stopper 43, the tool is kept flush with the calibration of the stopper 43, and then the clamping cylinder 24 is started to clamp and fix the tool;

[0069] When the tool is fixed, the driving cylinder 26 drives the push plate 25 to reset until it leaves the tool box 22, and the tool in the tool box 22 falls down.

[0070] At this time, the reduction motor 34 is started to drive the screw rod 33 to rotate, and the fixing plate 21 and the slider 36 can slide along the slide rod 35 through the nut, thereby driving the tool clamping mechanism 2 to move as a whole until the surface to be processed of the tool is flush with the grinder 11;

[0071] Then, the drive motor 13 is started to make the knife grinder 11 run, and the position and angle of the knife grinder 11 are controlled by the longitudinal and transverse movement mechanism and the rotation mechanism, so as to realize the tool grinding operation. After the grinding is completed, the knife clamping mechanism 2 is adjusted to the initial position by the moving mechanism 3;

[0072] At this time, the clamping cylinder 24 is cancelled to fix the tool, and the driving cylinder 26 is continued to be started to drive the push plate 25 to slide toward the tool box 22, and the tool at the bottom of the tool box 22 is pushed into the tool storage cover 23 again. At the same time, the first group of tools that have been ground previously are pushed forward and fall into the collection box between the positioning mechanism 4 and the moving mechanism 3. At the same time, the second group of tools are attached to the side of the stop block 43, and the above operation is repeated to complete the batch tool grinding operation.

[0073] Therefore, before grinding the tools, there is no need to manually place each group of tools to be ground flush, which reduces the workload of the staff, shortens the replacement time of the grinding tools, improves the qualified rate of tool grinding, and ensures grinding efficiency.

[0074] It should be noted that the stopper 43, the tool box 22 and the tool storage cover 23 can be disassembled and replaced, so it is convenient to process tools with blades of different shapes.

[0075] Embodiment 2: In order to ensure that the installation and grinding positions of each group of tools are consistent, it is necessary to set the positioning mechanism 4 to a fixed position. In the above embodiment, when the tool after grinding is lowered and the tool is changed, since the distance between the positioning mechanism 4 and the fixed plate 21 is fixed, the tool after grinding is easily stuck between the positioning mechanism 4 and the fixed plate 21 when falling and cannot fall, resulting in the tool to be ground later being unable to be positioned, resulting in a tool jam. In order to solve the above problem, specifically:

[0076] like Figure 5-Figure 7 As shown, in this embodiment, the connection method of the driving cylinder 26 and the push plate 25 is split and redefined, and a connecting plate 27 is fixedly installed on the upper end of the fixing plate 21, and the connecting plate 27 is arranged between the knife box 22 and the driving cylinder 26. At the same time, a sliding groove 271 is opened in the middle of the connecting plate 27, and a slide plate 28 is slidably connected in the sliding groove 271, and a fixing ring 281 is fixedly installed on the upper end of the slide plate 28. At the same time, an extension rod 261 is fixedly installed on the output shaft of the driving cylinder 26, and the fixing ring 281 is sleeved on the extension rod 261. In this embodiment, a magnet ring is fixedly installed on the outer wall of the extension rod 261, and the magnet ring is located on the inner side of the fixing ring 281. At the same time, a magnet is also installed on the inner wall of the fixing ring 281. The magnet and the magnet ring attract each other, so starting the driving cylinder 26 makes the extension rod 261 drive the fixing ring 281 and the slide plate 28 to slide in the sliding groove 271;

[0077] At the same time, a first slide groove 282 is vertically opened at the upper end of the slide plate 28, and a clamping rod 272 is rotatably connected to the upper end of the connecting plate 27, and a spring pin is fixedly installed at the other end of the clamping rod 272. The spring pin is normally located inside the first slide groove 282, so when the slide plate 28 slides in the sliding groove 271 toward the knife box 22, the clamping rod 272 drives the spring pin to slide in the first slide groove 282;

[0078] A second slide groove 283 is provided on the side of one end of the first slide groove 282 close to the driving cylinder 26. A first arc angle is provided at the connection between the second slide groove 283 and the first slide groove 282. The depth of the first arc angle is consistent with the depth of the second slide groove 283. The depth of the first slide groove 282 is less than the depth of the second slide groove 283 and a depth difference is formed. Therefore, when the clamping rod 272 drives the spring pin to reach the second slide groove 283, it cannot return to the first slide groove 282.

[0079] A third slide groove 284 is provided at the side of one end of the second slide groove 283 away from the first slide groove 282. A corner 285 is provided at the connection between the third slide groove 284 and the second slide groove 283. The depth of the corner 285 is consistent with the depth of the third slide groove 284. The depth of the second slide groove 283 is less than the depth of the third slide groove 284 and a depth difference is formed. Therefore, when the clamping rod 272 drives the spring pin to reach the third slide groove 284, it cannot return to the second slide groove 283.

[0080] At the same time, a fourth slide groove 286 is provided on the side of the third slide groove 284 away from the second slide groove 283. For the convenience of understanding, the fourth slide groove 286 is divided into a first-stage groove and a second-stage groove, and the depth of the fourth slide groove 286 gradually decreases from the first-stage groove to the second-stage groove. A second arc angle is provided at the connection between the fourth slide groove 286 and the third slide groove 284. The depth of the second arc angle is consistent with the depth of the first-stage groove of the fourth slide groove 286. At the same time, the depth of the third slide groove 284 is less than the depth of the first-stage groove of the fourth slide groove 286 and forms a depth difference. Therefore, after the clamping rod 272 drives the spring pin to reach the first-stage groove of the fourth slide groove 286, it cannot return to the third slide groove 284.

[0081] The second section of the fourth slide groove 286 is obliquely connected to the first slide groove 282, and the depth of the second section of the fourth slide groove 286 at the connection end is less than the depth of the first slide groove 282. Therefore, the clamping rod 272 drives the spring pin to return from the fourth slide groove 286 to the first slide groove 282 and cannot return to the fourth slide groove 286.

[0082] In this embodiment, the distance between the second arc angle and the knife box 22 is greater than the distance between the first arc angle and the knife box 22. Therefore, when the clamping rod 272 drives the spring pin to reach the second arc angle, the sliding distance of the slide plate 28 is the largest.

[0083] It should be noted that in order to quickly reset the slide plate 28, a reset spring (not shown) is fixedly installed between the side of the slide plate 28 close to the push plate 25 and the connecting plate 27. When the slide plate 28 slides toward the push plate 25, the reset spring will be squeezed, and after the thrust applied to the slide plate 28 disappears, the slide plate 28 will quickly reset under the action of the reset spring.

[0084] like Figure 6 and Figure 8-Figure 9 As shown, in this embodiment, the push plate 25 is configured as two sets of upper and lower plates attached to each other, the two sets of plates include a lower plate 252 slidably connected to the upper part of the fixed plate 21, and an upper plate 251 located above the lower plate 252, a convex strip 253 is fixedly installed on the upper end of the side of the lower plate 252 close to the connecting plate 27, and the height of the convex strip 253 is consistent with the thickness of the upper plate 251. In this embodiment, a sharp corner is provided at one end of the lower plate 252 away from the connecting plate 27, and the sharp corner is arranged obliquely downward along the direction close to the knife box 22;

[0085] It should be noted that magnet pieces are disposed on the opposite surfaces of the convex strip 253 and the upper plate 251. The two sets of magnet pieces are in a repulsive state under normal conditions, so there is a gap between the upper plate 251 and the convex strip 253 in the initial state.

[0086] like Figure 8-Figure 11 As shown, an opening is left in the middle of the convex strip 253, and a driving plate 254 is fixedly installed at one end of the upper plate 251 close to the convex strip 253, and the other end of the driving plate 254 passes through the opening of the convex strip 253 and is fixed on the slide plate 28, so when the slide plate 28 slides, the upper plate 251 is driven to slide through the driving plate 254;

[0087] In order to make the lower plate 252 slide simultaneously with the upper plate 251, as shown in FIG. Figure 6 and Figure 8-Figure 10 As shown, a movable groove 255 is opened on the lower plate 252, and a sliding column 256 is slidably connected in the movable groove 255. The sliding column 256 is fixedly installed on the upper plate 251. In the initial state, the sliding column 256 is located in the middle part of the movable groove 255. Therefore, when the upper plate 251 slides, it will drive the sliding column 256 to slide in the movable groove 255 until the sliding column 256 reaches the other end of the movable groove 255, and then it will drive the lower plate 252 to slide together.

[0088] A fixed cover 29 is fixedly installed at one end of the connecting plate 27 close to the push plate 25. The fixed cover 29 is located directly above the driving plate 254. For ease of understanding, the fixed cover 29 is configured as a first section and a second section. The first section is fixed to the connecting plate 27, and the second section is connected to the other end of the first section. The first section is higher than the second section, and the connection between the first section and the second section is configured as an arc surface.

[0089] At the same time, a mounting groove 257 is formed through the driving plate 254, and the movable plate 20 is slidably connected in the mounting groove 257. In this embodiment, a magnet sheet is installed on the lower end surface of the first section of the fixed cover 29, and the upper end of the movable plate 20 is set as a magnetic material. Therefore, when the movable plate 20 is located at the first section of the fixed cover 29, the movable plate 20 is attracted upward by the magnet sheet so that it is located above the mounting groove 257. When the movable plate 20 is located below the second section of the fixed cover 29, it is squeezed by the fixed cover 29 so that the movable plate 20 is completely inside the mounting groove 257, thereby facilitating the control of the height of the movable plate 20.

[0090] At the same time, the movable plate 20 is slidably connected with a card plate 201 inside, and an inclined plate 203 is provided at the lower end of the card plate 201. A compression spring 202 is fixedly installed between the card plate 201 and the movable plate 20. In the initial state, the inclined plate 203 presses against the surface of the lower plate 252, so the card plate 201 and the inclined plate 203 are located inside the movable plate 20, and the compression spring 202 is squeezed and contracted at this time;

[0091] A fixing groove 258 is formed on the upper end surface of the lower plate 252 , and the fixing groove 258 cooperates with the inclined plate 203 .

[0092] It should be noted that in the initial state, the movable plate 20 and the clamping plate 201 will be attracted by the magnet sheet on the lower end surface of the first section of the fixed cover 29, and are located in the gap between the upper plate 251 and the protruding strip 253, and the clamping plate 201 and the inclined plate 203 are located inside the movable plate 20.

[0093] In this embodiment, when the upper plate 251 and the lower plate 252 are in an initial state, the sharp corner of the lower plate 252 protrudes from the end surface of the upper plate 251 close to the knife box 22 .

[0094] In summary: before grinding the tool, the tool clamping mechanism 2 is first adjusted to the initial position, and then the driving cylinder 26 is started to drive the extension rod 261, and the fixing ring 281 moves simultaneously with the extension rod 261 and drives the slide plate 28 to slide in the sliding groove 271 toward the push plate 25;

[0095] When the slide plate 28 slides, the spring pin on the clamping rod 272 slides in the first slide groove 282 until it slides to the end of the first slide groove 282, that is, the first arc angle. At this time, the slide plate 28 is restricted by the clamping rod 272 and cannot slide.

[0096] When the slide plate 28 slides, it pushes the driving plate 254 to drive the upper plate 251 to slide. When the upper plate 251 slides, the sliding post 256 slides to the other end of the moving groove 255. At this time, the end surface of the upper plate 251 is flush with the sharp end surface of the lower plate 252, and drives the lower plate 252 to slide together, pushing the tool in the tool box 22 to the tool storage cover 23;

[0097] When the spring pin on the clamping rod 272 slides to the first arc angle, the tool just sticks to the surface of the stopper 43, and then the clamping cylinder 24 is started to clamp and fix the tool;

[0098] The driving cylinder 26 has not reached the end of the stroke, and drives the extension rod 261 to continue to move forward, and the magnet ring is separated from the fixed ring 281, and then the moving mechanism 3 drives the knife clamping mechanism 2 to move to the knife grinder 11, and the knife grinder 11 performs a grinding operation on the knife;

[0099] At the same time, the fixing ring 281 has no thrust, and the return spring starts to rebound and return, pushing the slide plate 28 to slide in the opposite direction, so that the clamping rod 272 drives the spring pin into the second slide groove 283 until it reaches the corner 285, and the slide plate 28 is clamped;

[0100] When the driving cylinder 26 reaches the end of the stroke and starts to reset, when the magnet ring on the extension rod 261 reaches the fixed ring 281, the position of the slide plate 28 is not affected because the clamping rod 272 clamps the slide plate 28 through the corner 285.

[0101] When the slide plate 28 is reset, the driving plate 254 will slide and reset accordingly. At this time, the driving plate 254 will drive the upper plate 251 to slide backward. Since the slide post 256 will slide in the moving groove 255 first, the position of the lower plate 252 remains unchanged at this time.

[0102] At the same time, when the driving plate 254 slides, it will drive the movable plate 20 and the clamping plate 201 to slide backward until they reach the position of the fixed groove 258. At this time, the compression spring 202 is reset to push the clamping plate 201 into the fixed groove 258, clamping the lower plate 252, so that the sharp corner of the lower plate 252 protrudes from the end surface of the upper plate 251, and the upper plate 251 and the lower plate 252 in this state do not leave the tool box 22, so the tool to be ground above does not fall;

[0103] When the tool is ground, the moving mechanism 3 adjusts the knife clamping mechanism 2 to the initial position, and then drives the cylinder 26 to continue to push, and the extension rod 261 continues to move forward. When the magnet ring on the extension rod 261 reaches the fixed ring 281, it is re-adsorbed and drives the slide plate 28 to slide. At this time, the clamping rod 272 drives the spring pin to enter the third slide groove 284 and slide along the third slide groove 284 until it reaches the end of the third slide groove 284, that is, the second arc angle.

[0104] When the spring pin is driven by the clamping rod 272 to reach the second arc angle, the sliding distance of the slide plate 28 is the largest, so that the slide plate 28 is restricted by the clamping rod 272 and cannot slide, and this is the limit distance of the driving cylinder 26;

[0105] When the slide plate 28 continues to move forward along with the extension rod 261, since the movable plate 20 is stuck in the fixing groove 258, the upper plate 251 will drive the lower plate 252 to slide at the same time, and at this time, the sharp corner of the lower plate 252 protrudes from the end surface of the upper plate 251, so that the sharp corner of the lower plate 252 will first contact the tool after grinding, and lift the tool upward along the sharp corner, so that the tool is tilted along the sharp corner of the lower plate 252 until the inclined end touches the upper plate 251;

[0106] Then the tool will continue to be pushed along with the upper plate 251 in an inclined state, so that after the grinding is completed, the tool will fall downward at an inclined state, so that the tool will not be stuck between the positioning mechanism 4 and the fixed plate 21 when falling, thus preventing the tool from being stuck;

[0107] After the tool is unloaded after grinding, the driving cylinder 26 is also reset, and the extension rod 261 drives the slide plate 28 to reset through the fixing ring 281. At this time, the clamping rod 272 drives the spring pin to slide along the fourth slide groove 286 until it returns to the initial position;

[0108] At the same time, the upper plate 251 and the lower plate 252 will also slide and reset along with the driving plate 254, and the movable plate 20 will slide along the fixed cover 29. When the slide plate 28 reaches the initial position, the movable plate 20 will follow the fixed cover 29 to the lower end of the first section of the fixed cover 29 and be adsorbed by the magnet sheet on the lower end surface. At this time, the movable plate 20 drives the card plate 201 to disengage from the fixed groove 258, canceling the engagement between the upper plate 251 and the lower plate 252. At this time, the repelling magnet sheets set on the opposite surface of the convex strip 253 and the upper plate 251 will leave a gap between the upper plate 251 and the convex strip 253 again, and restore to the initial position, thereby facilitating the loading of the next tool to be ground.

[0109] Therefore, it is achieved that the tool is prevented from getting stuck when it falls, so that the positioning of the tool to be ground later is not affected, thereby improving the grinding efficiency.

[0110] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A CNC tool grinding device, which is used to process a CNC tool in the form of a blade, characterized in that: include: Workbench (5); A grinding mechanism (1), the grinding mechanism (1) having a grinding knife (11); A tool clamping mechanism (2), the tool clamping mechanism (2) being arranged on one side of the grinding mechanism (1), the tool clamping mechanism (2) being used to clamp and fix a tool to be processed, the grinding mechanism (1) being used to perform a grinding operation on the CNC tool after fixation, the tool clamping mechanism (2) comprising: Fixed plate (21); A knife placing box (22), the knife placing box (22) being mounted on the upper end of the fixing plate (21), and a slot is formed through the bottom of the knife placing box (22); A driving cylinder (26) is mounted on the upper end of the fixing plate (21), and the driving cylinder (26) is located on a side of the knife box (22) away from the knife sharpening (11); A push plate (25), the push plate (25) being mounted on the output shaft of the driving cylinder (26), the push plate (25) comprising a lower plate (252) slidably connected to the upper portion of the fixing plate (21), and an upper plate (251) located above the lower plate (252), one end of the lower plate (252) being provided with a sharp corner, the sharp corner being arranged to be inclined downward in a direction close to the knife box (22); A clamping cylinder (24), the clamping cylinder (24) being mounted on one side end of the tool storage box (22), the clamping cylinder (24) being used to clamp and fix the grinding tool; A moving mechanism (3), the moving mechanism (3) being arranged at the lower end of the fixing plate (21), the moving mechanism (3) being used to adjust the position of the knife clamping mechanism (2); A positioning mechanism (4), the positioning mechanism (4) being located at one side of the grinding mechanism (1), the positioning mechanism (4) having a stopper (43), an end surface of the stopper (43) facing the moving mechanism (3) being a calibration surface, the calibration surface being flush with the height of the surface to be processed of the tool and corresponding to each other; A connecting plate (27) is fixedly mounted on the upper end of the fixing plate (21); a sliding groove (271) is provided in the middle of the connecting plate (27); a sliding plate (28) is slidably connected in the sliding groove (271); a fixing ring (281) is fixedly mounted on the upper end of the sliding plate (28); an extension rod (261) is fixedly mounted on the output shaft of the driving cylinder (26); and the fixing ring (281) is sleeved on the extension rod (261); A magnet ring is fixedly mounted on the outer wall of the extension rod (261), and the magnet ring is arranged on the inner wall of the fixing ring (281). A magnet is also mounted on the inner wall of the fixing ring (281), and the magnet and the magnet ring attract each other; A first slide groove (282) is vertically formed at the upper end of the slide plate (28); a second slide groove (283) is formed on the side of one end of the first slide groove (282) close to the driving cylinder (26); a third slide groove (284) is formed on the side of one end of the second slide groove (283) away from the first slide groove (282); a corner (285) is formed at the connection between the third slide groove (284) and the second slide groove (283); The upper end of the connecting plate (27) is rotatably connected to a clamping rod (272), and a spring pin is fixedly installed at the other end of the clamping rod (272), and the spring pin is located inside the first sliding groove (282); A fourth slide groove (286) is provided on a side of the third slide groove (284) away from the second slide groove (283), and the fourth slide groove (286) is divided into a first-stage groove and a second-stage groove.

2. A CNC tool grinding device according to claim 1, characterized in that: A convex strip (253) is fixedly mounted on the upper end of one side of the lower plate (252), the height of the convex strip (253) being consistent with the thickness of the upper plate (251), and magnet sheets that repel each other are arranged on the opposite surfaces of the convex strip (253) and the upper plate (251), a movable groove (255) is opened on the lower plate (252), a sliding column (256) is slidably connected in the movable groove (255), the sliding column (256) is fixedly mounted on the upper plate (251), and the sliding column (256) is located in the middle of the movable groove (255).

3. A CNC tool grinding device according to claim 2, characterized in that: A driving plate (254) is fixedly mounted on one end of the upper plate (251), the driving plate (254) passes through the convex strip (253) and the connecting plate (27), and the other end of the driving plate (254) is fixed on the sliding plate (28).

4. A CNC tool grinding device according to claim 3, characterized in that: A fixed cover (29) is fixedly installed at one end of the connecting plate (27) close to the push plate (25), and the fixed cover (29) is located directly above the driving plate (254). The fixed cover (29) is configured to include a first section and a second section, wherein the first section is fixed to the connecting plate (27), and the second section is connected to the other end of the first section. The height of the first section is higher than that of the second section. A magnet sheet is installed on the lower end surface of the first section. A mounting groove (257) is provided through the driving plate (254), and a movable plate (20) is slidably connected in the mounting groove (257). A magnet sheet is installed on the lower end surface of the first section, and the upper end of the movable plate (20) is configured to be made of a magnetic material.

5. A CNC tool grinding device according to claim 4, characterized in that: The movable plate (20) is slidably connected to a clamping plate (201) inside, an inclined plate (203) is provided at the lower end of the clamping plate (201), the inclined surface of the inclined plate (203) faces the convex strip (253), a compression spring (202) is fixedly installed between the clamping plate (201) and the movable plate (20), and a fixing groove (258) is provided on the upper end surface of the lower plate (252), and the fixing groove (258) and the inclined plate (203) cooperate with each other.

6. A CNC tool grinding device according to claim 5, characterized in that: A first arc angle is provided at the connection between the second slide groove (283) and the first slide groove (282), the depth of the first arc angle is consistent with the depth of the second slide groove (283), the depth of the first slide groove (282) is less than the depth of the second slide groove (283), and a depth difference is formed.

7. A CNC tool grinding device according to claim 6, characterized in that: The depth of the corner (285) is consistent with the depth of the third slide groove (284), and the depth of the second slide groove (283) is less than the depth of the third slide groove (284), forming a depth difference.

8. A numerically controlled tool grinding device according to claim 7, characterized in that: The depth of the fourth slide groove (286) gradually decreases from the first section to the second section. A second arc angle is provided at the connection between the fourth slide groove (286) and the third slide groove (284). The depth of the second arc angle is consistent with the depth of the first section of the fourth slide groove (286). The depth of the third slide groove (284) is less than the depth of the first section of the fourth slide groove (286) and forms a depth difference. The second section of the fourth slide groove (286) is obliquely connected to the first slide groove (282). The depth of the second section of the fourth slide groove (286) is less than the depth of the first slide groove (282).

9. A CNC tool grinding device according to claim 1, characterized in that: A fixed seat (41) is fixedly mounted on the upper end of the workbench (5), a clamp (42) is fixedly mounted on the upper end of the fixed seat (41), the clamp (42) has a base plate (421) fixedly mounted on the fixed seat (41), a baffle (422) is fixedly mounted on one end of the base plate (421) away from the moving mechanism (3), a fixed clamp (423) is fixedly mounted on the other end of the base plate (421), a screw rod (425) is threadedly connected to the baffle plate (422), a movable clamp (424) is fixedly mounted on one end of the screw rod (425) close to the fixed clamp (423), the movable clamp (424) is slidably connected to the base plate (421), and a handle (426) is fixedly mounted on the other end of the screw rod (425).

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