Blade fixing device for numerical control machine tool machining

Abstract

The invention discloses a blade fixing device for numerical control machine tool machining, and relates to the technical field of numerical control machine tool blade fixing. The fixing mechanism is fixed on the mounting seat and comprises a nut fixed on the mounting seat, the inner wall of the nut is in threaded connection with a bolt, a groove body is formed in the lower end of the bolt, a pressing piece is mounted on the mounting seat and matched with the bolt, a positioning groove is formed in the bottom of the bolt, and a pressing plate is fixed at the lower end of the pressing piece. The pushing piece is driven by gas to achieve automatic centering positioning of the blade, operation errors caused by manual alignment are avoided, it is ensured that the blade is located in the middle of the bottom of the pressing plate all the time, the cutting track is accurate and controllable during machining, meanwhile, the positioning column is matched with the bolt positioning groove, the bolt is prevented from rotating reversely due to vibration, and the blade does not deviate or loosen after being fixed; and the machining size precision is remarkably improved, the rejection rate caused by positioning deviation is reduced, and the product consistency is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tool blade fixing of numerical control machine tools, in particular to a tool blade fixing device for numerical control machine tool machining. BACKGROUND

[0002] In numerical control machine tool machining, the tool blade needs to be stably installed through a fixing device to ensure machining precision and operation safety.

[0003] However, in practical applications, there are still some problems that have not been solved, and the following are some common problems of the tool blade fixing device for numerical control machine tool machining: first, poor fixing stability, direct extrusion of the bolt on the tool blade is easy to cause damage, and machine vibration is easy to cause the bolt to reverse and loosen, resulting in the tool blade falling off; second, complicated operation and lack of protection mechanism, the tool blade needs to be manually adjusted during fixing, and the bolt needs to be in contact with the tool to continue rotating to lock, the tool blade is easy to be extruded to produce indentation during the fixing process, and the tool blade is easy to deviate during the operation process of rotating the bolt, affecting the use precision. SUMMARY

[0004] This section aims to summarize some aspects of the embodiments of the present application and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract and title of the specification to avoid obscuring the purpose of this section, abstract and title, and such simplifications or omissions cannot be used to limit the scope of the present application.

[0005] In view of the above and / or existing problems in the tool blade fixing device for numerical control machine tool machining, the present application is proposed.

[0006] Therefore, the problem to be solved by the present application is how to solve the problems of poor fixing stability and tool blade damage and lack of protection.

[0007] To solve the above technical problems, the present application provides the following technical scheme: a tool blade fixing device for numerical control machine tool machining, comprising: a mounting seat mounted on a numerical control machine tool; and a fixing mechanism fixed on the mounting seat, comprising a nut fixed on the mounting seat, a bolt threadedly connected to the inner wall of the nut, a groove formed in the lower end of the bolt, a pressing piece mounted on the mounting seat and cooperating with the bolt, a positioning groove formed in the bottom of the bolt, a pressing plate fixed to the lower end of the pressing piece, a positioning piece and an opening and closing piece respectively mounted on the pressing plate, the opening and closing piece cooperating with the positioning piece, a positioning column sliding on the pressing plate and cooperating with the positioning piece and the positioning groove, a limiting piece mounted on the opening and closing piece, a recess formed in the top of the pressing plate and cooperating with the limiting piece, a magnet fixed in the pressing plate and cooperating with the positioning column.

[0008] As a preferred scheme of the blade fixing device for machining of the numerical control machine tool, the pressing piece comprises a vertical rod sliding in the inner wall of the groove, and the lower end of the vertical rod is fixed to the top of the pressing plate, the lower end surface of the vertical rod is sleeved with a spring one, and the two ends of the spring one are respectively abutted with the inner wall of the groove and the top of the pressing plate, a circular tube is slidingly arranged on the mounting seat, and the lower end of the circular tube is fixed to the top of the pressing plate, a pull ring is fixed to the upper end of the circular tube, a movable column is slidingly arranged on the pressing plate and the inner wall of the circular tube, and the movable column is matched with the positioning piece.

[0009] As a preferred scheme of the blade fixing device for machining of the numerical control machine tool, the circular tube is slidingly provided with a sliding block, and the sliding block is fixed to the upper end surface of the movable column, the one end bottom of the sliding block is fixed with a short rod, the lower end of the short rod is fixed with a limiting block, the surface of the short rod is slidingly sleeved with a circular block matched with the limiting block, the surface of the circular block is fixed with a connecting plate, one end of the connecting plate is fixed with a ring block matched with the groove and the recess respectively, the lower end surface of the circular tube is sleeved with a spring two, and the two ends of the spring two are respectively fixedly connected with the bottom of the sliding block and the top of the pressing plate.

[0010] As a preferred scheme of the blade fixing device for machining of the numerical control machine tool, the positioning piece comprises a vertical block fixed to the bottom of the pressing plate, the vertical block is respectively provided with a gas cavity one, a gas cavity two and a channel one, the channel one is respectively communicated with the gas cavity one and the gas cavity two, the opening and closing piece is fixed to one side of the vertical block and matched with the channel one, the gas cavity one is slidingly provided with a piston one fixed to the lower end of the movable column, the vertical block is provided with a pushing piece, and one side of the pushing piece is fixed with a rubber pad.

[0011] As a preferred scheme of the blade fixing device for machining of the numerical control machine tool, the pressing plate is provided with a gas cavity three, the pressing plate and the vertical block are provided with a channel two, the channel two is respectively communicated with the gas cavity two and the gas cavity three, the top of the pressing plate is provided with a slot hole communicated with the gas cavity three, the positioning column is slidingly arranged in the slot hole, and the magnet is fixed to the inner wall of the slot hole.

[0012] As a preferred scheme of the blade fixing device for machining of the numerical control machine tool, the pushing piece comprises a circular groove provided in the inner wall of the gas cavity two, the inner wall of the circular groove is slidingly provided with a piston two, the vertical block is slidingly provided with a pushing column, one end of the pushing column located in the circular groove is fixed to the surface of the piston two, the pushing column is fixed at the end away from the piston two with a pushing plate, and the rubber pad is fixed to one side of the pushing plate, and the spring three is fixed between the surface of the vertical block and the inner wall of the pushing plate.

[0013] As a preferred scheme of the blade fixing device for machining of the numerical control machine tool, the positioning groove is respectively provided with an inclined surface and a vertical surface, and the positioning column is respectively matched with the inclined surface and the vertical surface.

[0014] As a preferred scheme of the tool blade fixing device for numerical control machine tool machining, wherein: the opening and closing part comprises a valve shell fixed on one side of the vertical block, and the valve shell is connected with the channel, the surface of the valve shell is provided with a gas hole, the inner wall of the valve shell is slidably provided with a valve block, the valve shell is slidably provided with a valve rod, and one end of the valve rod is fixed on one side of the valve block, the valve shell and the valve rod are slidably provided with a guide frame, the valve rod is fixedly provided with a guide column, and the guide column is slidably arranged in the guide frame, the pressing plate is slidably provided with a cover plate, and the bottom of the cover plate and the surface of the valve shell are fixedly provided with a spring one.

[0015] As a preferred scheme of the tool blade fixing device for numerical control machine tool machining, wherein: the limiting part comprises a clamping groove provided on the surface of the pressing plate, a square slot is provided in the cover plate, a square block is slidably arranged on the inner wall of the square slot, a clamping rod is slidably arranged on the cover plate, and one end of the clamping rod is fixed on the square block, and the clamping rod cooperates with the clamping groove.

[0016] As a preferred scheme of the tool blade fixing device for numerical control machine tool machining, wherein: the surface of the square block and the surface of the square block are fixedly provided with a spring two, and the upper end of the clamping rod is fixedly provided with a handle.

[0017] The tool blade fixing device for numerical control machine tool machining has the following advantages: 1. The tool blade is automatically centered and positioned by the gas-driven driving part, avoiding the operation error of manual alignment, ensuring that the tool blade is always in the middle position of the bottom of the pressing plate, and the cutting trajectory is accurately controllable during machining. At the same time, the positioning column cooperates with the bolt positioning groove to prevent the bolt from being reversed due to vibration. After the tool blade is fixed, there is no deviation and no loosening, the machining size precision is significantly improved, the waste rate caused by positioning deviation is reduced, and the product consistency is ensured.

[0018] 2. The design of indirectly pressing the tool blade by the pressing plate avoids the indentation damage caused by traditional direct extrusion, and the rubber pad on the driving part buffers the pressure during positioning, further protecting the surface of the tool blade. The tool blade can be reused without affecting the precision, greatly extending the service life of the tool blade, reducing the cost investment of frequent replacement of the tool blade, and reducing the consumable expenditure of numerical control machine tool machining.

[0019] 3. When fixing the tool blade, the spring one rebounds to achieve preliminary pressing, without the need for manual adjustment. The bolt is rotated and moved downward to simultaneously complete the centering and anti-loosening locking, without the need for additional operation. When unlocking, only the handle needs to be pulled to control the opening and closing part, and then the bolt is reversed to quickly release the fixing. The whole replacement process does not require complex tools, the operation steps are greatly reduced compared with traditional devices, the tool blade replacement time is shortened, and the labor intensity of the operator is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without any creative labor.

[0021] Figure 1 Scene diagram of the blade fixing device for numerical control machine tool processing.

[0022] Figure 2 Partial structure diagram of the blade fixing device for numerical control machine tool processing.

[0023] Figure 3 Partial sectional plan view of the blade fixing device for numerical control machine tool processing.

[0024] Figure 4 Partial sectional plan view of the blade fixing device for numerical control machine tool processing. Figure 3 Enlarged view of area A in the middle.

[0025] Figure 5 Enlarged view of area B in the middle. Figure 3 Enlarged view of area C in the middle.

[0026] Figure 6 Enlarged view of area D in the middle. Figure 3 Enlarged view of area E in the middle.

[0027] Figure 7 Enlarged view of area F in the middle. Figure 3 Enlarged view of area G in the middle.

[0028] Figure 8 Enlarged view of area H in the middle. Figure 4 Enlarged view of area I in the middle.

[0029] Figure 9 Enlarged view of area J in the middle. Figure 4 Enlarged view of area K in the middle.

[0030] Figure 10 Side view sectional plan view of the pressing plate of the blade fixing device for numerical control machine tool processing.

[0031] Figure 11 Enlarged view of area L in the middle. Figure 10 Enlarged view of area M in the middle.

[0032] Figure 12 Enlarged view of area N in the middle. Figure 10 Enlarged view of area O in the middle.

[0033] Figure 13The plan view of the sectional plane of the pressing plate of the blade fixing device for the numerical control machine tool processing.

[0034] Figure 14 The sectional view of the valve shell and guide frame of the blade fixing device for the numerical control machine tool processing.

[0035] Figure 15 The partial sectional view of the pushing plate and pushing column of the blade fixing device for the numerical control machine tool processing.

[0036] Figure 16 The partial sectional view of the bolt of the blade fixing device for the numerical control machine tool processing.

[0037] Figure 17 The Figure 16 The enlarged view of the J area in the middle.

[0038] In the figure: 1, mounting seat; 2, fixing mechanism; 21, bolt; 22, groove body; 23, positioning piece; 24, pressing plate; 25, positioning groove; 26, positioning column; 27, pressing piece; 28, opening and closing piece; 29, limiting piece; 210, recess; 211, nut; 212, magnet; 271, vertical rod; 272, spring I; 273, round pipe; 274, pull ring; 275, movable column; 276, sliding block; 277, short rod; 278, limiting block; 279, round block; 2710, connecting plate; 2711, ring block; 2712, spring II; 231, vertical block; 232, air cavity I; 233, air cavity II; 234, channel I; 235, piston I; 236, air cavity III; 237, channel II; 238, slot hole; 239, pushing piece; 2310, rubber pad; 2391, round groove; 2392, piston II; 2393, pushing column; 2394, pushing plate; 2395, spring III; 251, inclined surface; 252, vertical surface; 281, valve shell; 282, air hole; 283, valve block; 284, valve rod; 285, guide frame; 286, guide column; 287, cover plate; 288, elastic sheet I; 291, clamping groove; 292, square groove; 293, square block; 294, clamping rod; 295, elastic sheet II; 296, handle. DETAILED DESCRIPTION

[0039] In order to make the above-mentioned objectives, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0040] In the following description, a lot of specific details are set forth in order to give a thorough understanding of the present application, but the present application can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without departing from the concept of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0041] Second, the "one embodiment" or "an embodiment" referred to herein means a specific feature, structure, characteristic, or combination of features and / or characteristics described herein that can be included in at least one implementation of the present application. The various appearances of "in one embodiment" or "an embodiment" in the specification do not all refer to the same embodiment, although they can.

[0042] Embodiment 1, Reference Figures 1-3 For the first embodiment of the present application, the embodiment provides a tool fixing device for numerical control machine tool machining. The tool fixing device for numerical control machine tool machining comprises a mounting seat 1 and a fixing mechanism 2.

[0043] Specifically, the mounting seat 1 is mounted on the numerical control machine tool, and the mounting seat 1 is adjustably fixed on the numerical control machine tool, which facilitates the rotation adjustment and switching of the corresponding tool mounted on the mounting seat 1 according to the machining condition. The working principle and the like are prior art, and those skilled in the art can clearly understand them, which will not be described here.

[0044] Specifically, the fixing mechanism 2 is fixed on the mounting seat 1, comprising nuts 211 fixed on the mounting seat 1, and bolts 21 threadedly connected to the inner wall of the nuts 211. A plurality of nuts 211 are provided on one mounting seat 1, and two groups of nuts 211 and bolts 21 correspondingly fix one tool, and four groups of tools can be fixed at the same time. A groove 22 is formed in the lower end of the bolt 21. A pressing piece 27 is mounted on the mounting seat 1, and the pressing piece 27 cooperates with the bolt 21. A positioning groove 25 is formed in the bottom of the bolt 21, and a pressing plate 24 is fixed to the lower end of the pressing piece 27.

[0045] Through the setting of the pressing plate 24, after pulling the pressing piece 27 to drive the pressing plate 24 to move upward, the tool can be placed on the mounting seat 1, and then the pressing piece 27 is loosened. Under the action of rebound, the pressing plate 24 can press the tool, without the need for manual holding to preliminarily position the tool. Then, the bolt 21 is rotated to move on the nut 211, and the lower end of the bolt 21 is in close contact with the top of the pressing plate 24 to fix it. In this process, the lower end of the bolt 21 will not directly contact the tool, which plays a protective role on the tool, avoids causing indentation damage to the tool during rotation and pressing, and affects the accuracy during next replacement and use. In the process of rotation and pressing of the bolt 21, the pressing plate 24 is directly acted on, and the tool is not acted on, which will not cause the tool to be offset by the rotation force during fixing.

[0046] The positioning piece 23 and the opening and closing piece 28 are respectively arranged on the pressing plate 24, the opening and closing piece 28 is matched with the positioning piece 23, through the arrangement of the positioning piece 23, the pressing holding piece 27 is acted on in the rotating moving process of the bolt 21, and then the positioning piece 23 drives the cutting tool preliminarily positioned on the pressing plate 24 to be pushed, so that the cutting tool can be in the middle position of the bottom of the pressing plate 24, and the centering effect is achieved. The positioning column 26 is slidably arranged on the pressing plate 24 and matched with the positioning piece 23 and the positioning groove 25.

[0047] The positioning column 26 is arranged in a circumferential array on the top of the pressing plate 24, the positioning groove 25 is arranged in a circumferential array on the lower end of the bolt 21, and the number of the positioning groove 25 is much larger than the number of the positioning column 26. When the lower end of the bolt 21 is in precise contact with the pressing plate 24 to fix the cutting tool, at least one group of the positioning column 26 can be inserted into the positioning groove 25 to limit the bolt 21, so that the bolt 21 cannot be reversed due to vibration and other factors during the machining process of the machine tool, thereby achieving the anti-loose function and reducing the loosening of the cutting tool.

[0048] The limiting piece 29 is arranged on the opening and closing piece 28, the recess 210 is arranged on the top of the pressing plate 24 and matched with the limiting piece 29, through the arrangement of the limiting piece 29, the opening and closing of the opening and closing piece 28 can be controlled, and then whether the positioning piece 23 is communicated with the atmosphere is realized. When it is necessary to release the fixation of the cutting tool, the opening and closing piece 28 is opened to make the inner wall of the positioning piece 23 communicated with the atmosphere, then the positioning column 26 inserted into the positioning groove 25 is moved back to be separated from the positioning groove 25 under the action of its own gravity and the magnetic attraction of the magnet 212, and then the pressing holding piece 27 is moved up by reversely rotating the bolt 21, so that the fixation is released. During installation, the opening and closing piece 28 is closed, and the installation operation is repeated.

[0049] The magnet 212 is fixed in the pressing plate 24 and matched with the positioning column 26, the positioning column 26 is made of iron, and the magnet 212 is a weak magnet. Through the arrangement of the magnet 212, a magnetic attraction force can be provided for the positioning column 26, so that the operation is more smoothly completed during the resetting of the positioning column 26. When the gas in the pressing plate 24 is pressed, the positioning column 26 can be moved away from the magnet 212 for magnetic attraction. For the prior art, the working principle and the like are the prior art, and those skilled in the art can clearly know that they will not be described here.

[0050] Embodiment 2, refer to Figures 2-11 This is the second embodiment of the application, which is based on the previous embodiment.

[0051] Specifically, the pressing member 27 comprises a vertical rod 271 sliding in the inner wall of the groove body 22, and the lower end of the vertical rod 271 is fixed to the top of the pressing plate 24, the lower end surface of the vertical rod 271 is sleeved with a spring 272, and the two ends of the spring 272 are respectively abutted with the inner wall of the groove body 22 and the top of the pressing plate 24, a circular tube 273 is slidingly arranged on the mounting seat 1, and the lower end of the circular tube 273 is fixed to the top of the pressing plate 24, a pull ring 274 is fixed to the upper end of the circular tube 273, and a movable column 275 is slidingly arranged on the pressing plate 24 and the inner wall of the circular tube 273, and the movable column 275 is matched with the positioning member 23.

[0052] The circular tube 273 penetrates through the mounting seat 1 and is slidingly connected with the mounting seat 1, through the arrangement of the spring 272, the circular tube 273 and the pressing plate 24 are pulled up, the vertical rod 271 moves in the groove body 22 in the bolt 21, and then the spring 272 is compressed, the tool is placed on the mounting seat 1, then the pull ring 274 is loosened, the pressing plate 24, the vertical rod 271, the circular tube 273 and the pull ring 274 are moved back under the action of the spring 272, and after the bottom of the pressing plate 24 contacts the surface of the tool, the tool is preliminarily pressed and limited under the action of the spring force of the spring 272 pressing the pressing plate 24.

[0053] Specifically, the circular tube 273 slidingly has a sliding block 276, and the sliding block 276 is fixed to the upper end surface of the movable column 275, one end of the sliding block 276 is fixedly provided with a short rod 277, the lower end of the short rod 277 is fixedly provided with a limiting block 278, the surface of the short rod 277 is slidingly sleeved with a circular block 279, and the circular block 279 is matched with the limiting block 278, the surface of the circular block 279 is fixedly provided with a connecting plate 2710, one end of the connecting plate 2710 is fixedly provided with a ring block 2711, and the ring block 2711 is matched with the groove body 22 and the groove 210 respectively, the lower end surface of the circular tube 273 is sleeved with a spring 2712, and the two ends of the spring 2712 are fixedly connected with the bottom of the sliding block 276 and the top of the pressing plate 24 respectively, through the arrangement of the spring 2712, the sliding block 276 is compressed in the process of moving up and down on the circular tube 273, and the force is provided for the subsequent reset of the sliding block 276 and the movable column 275.

[0054] With the ring block 2711 in place, after the pressure plate 24 initially presses and limits the tool, the bolt 21 is rotated so that it rotates on the nut 211 and moves downward. As it moves, the ring block 2711 enters the groove 22 and the connecting plate 2710 contacts the lower end of the bolt 21. Then, the bolt 21 continues to rotate and move downward, thereby driving the ring block 2711, the connecting plate 2710 and the round block 279 to move downward. The downward movement of the round block 279 drives the short rod 277 and the slider 276 to move downward, thereby causing the movable column 275 to move in the round tube 273 and on the pressure plate 24, thereby acting on the positioning member 23 to center and limit the tool. It should be noted that during this centering process, the pressure of the pressure plate 24 on the tool is insufficient to obstruct it. Then, the lower part of the ring block 2711 and the lower end of the connecting plate 2710 move into the groove 210, so that the lower end of the bolt 21 contacts the top of the pressure plate 24.

[0055] Specifically, the positioning component 23 includes a vertical block 231 fixed to the bottom of the pressure plate 24. The vertical block 231 has an air chamber 232, an air chamber 233 and a channel 234 respectively. The channel 234 is connected to the air chamber 232 and the air chamber 233 respectively. The opening and closing component 28 is fixed to one side of the vertical block 231 and cooperates with the channel 234. A piston 235 slides in the air chamber 232 and is fixed to the lower end of the movable column 275. A pushing component 239 is installed on the vertical block 231 and a rubber pad 2310 is fixed to one side of the pushing component 239.

[0056] The piston 235 and the air chamber 232 are sealed. With the piston 235, the movable column 275 can move in the air chamber 232 as the slider 276 moves down, thereby pressurizing the gas inside. During the gas push, the two sets of pushers 239 move closer to each other, thereby pushing the tool after the pressure plate 24 has been initially limited to a central position. The rubber pad 2310 plays a protective role when the pusher 239 pushes the tool to a clamping and limiting position.

[0057] Specifically, the pressure plate 24 has an air cavity 236, and the pressure plate 24 and the vertical block 231 have a channel 237. The channel 237 is connected to the air cavity 233 and the air cavity 236 respectively. The top of the pressure plate 24 has a slot 238, which is connected to the air cavity 236. The positioning post 26 slides in the slot 238, and the magnet 212 is fixed to the inner wall of the slot 238.

[0058] The positioning pin 26 and the slot 238 are sealed together, and the gas in the chamber and the channel is air. With this design, when the piston 235 moves in the air chamber 232, the gas pressure can press the positioning pin 26 to move upward in the slot 238, moving the upper end of the positioning pin 26 out of the pressure plate 24. This makes it easier for the positioning pin 26 to move back in the slot 238 when the bolt 21 contacts and presses against the positioning pin 26. Due to the compressibility of air, the positioning pin 26 can move back in the slot 238. After the lower end of the bolt 21 is in close contact with the pressure plate 24, and the positioning pin 26 and the positioning slot 25 are not blocked by the bolt 21, the gas pressure pushes the positioning pin 26 into the positioning slot 25, thereby positioning the bolt 21 and preventing it from rotating and causing the tool to loosen.

[0059] Example 3, referring to Figures 2-17 This is the third embodiment of the present invention, which is based on the first two embodiments.

[0060] Specifically, the pusher 239 includes a circular groove 2391 formed in the inner wall of the air chamber 233. A piston 2392 slides on the inner wall of the circular groove 2391. A pusher 2393 slides on the vertical block 231. One end of the pusher 2393 is fixed to the surface of the piston 2392 inside the circular groove 2391. A pusher plate 2394 is fixed to the end of the pusher 2393 away from the piston 2392. A rubber pad 2310 is fixed to one side of the pusher plate 2394. A spring 2395 is fixed between the surface of the vertical block 231 and the inner wall of the pusher plate 2394.

[0061] A seal is made between piston 2392 and circular groove 2391. By setting piston 2392, when piston 1 235 moves in air chamber 1 232, the gas in the chamber and channel is compressed, which in turn pushes piston 2392 to move in circular groove 2391, thereby driving push column 2393 and push plate 2394 to move, so that the rubber pad 2310 on push plate 2394 is close to the tool, and the tool is centered and clamped and positioned. By setting spring 3 2395, it deforms during the movement of push plate 2394, providing force for the subsequent reset of push plate 2394, push column 2393 and piston 2392.

[0062] Specifically, the positioning groove 25 is provided with an inclined surface 251 and a vertical surface 252, and the positioning post 26 cooperates with the inclined surface 251 and the vertical surface 252 respectively. The upper end of the positioning post 26 is chamfered. With the setting of the inclined surface 251, after the positioning post 26 is inserted into the positioning groove 25 at the lower end of the bolt 21, as the bolt 21 rotates, the inclined surface 251 can squeeze the positioning post 26 to move back along the upward trajectory. This process is repeated until the bolt 21 fixes the tool with the help of the pressure plate 24. With the setting of the vertical surface 252, after the positioning post 26 corresponds to the positioning groove 25, the positioning post 26 is inserted into the positioning groove 25 under the action of gas pressure. When the bolt 21 rotates and loosens, it can block the bolt 21 to prevent this from happening, thus playing the function of fixing the tool and preventing it from getting off.

[0063] Specifically, the opening and closing component 28 includes a valve housing 281 fixed to one side of the vertical block 231, and the valve housing 281 is connected to the channel 234. The surface of the valve housing 281 is provided with air holes 282. A valve block 283 slides on the inner wall of the valve housing 281. A valve stem 284 slides on the valve housing 281, and one end of the valve stem 284 is fixed to one side of the valve block 283. The valve block 283 and the valve housing 281 are sealed. There are several air holes 282, which are distributed in a circumferential array on the surface of the valve housing 281. The valve stem 284 passes through the valve housing 281 and is slidably connected to it.

[0064] A guide frame 285 slides on the valve housing 281 and the valve stem 284. A guide post 286 is fixed on the valve stem 284 and slides within the guide frame 285. A sleeve 287 slides on the pressure plate 24. A spring piece 288 is fixed between the bottom of the sleeve 287 and the surface of the valve housing 281. The guide frame 285 is divided into three parts. The first and third parts prevent the valve stem 284 from moving when the guide post 286 moves within it. The second part allows the valve stem 284 to move when the guide post 286 moves within it. Through the setting of the spring piece 288, the sleeve 287 deforms when it moves on the pressure plate 24, providing a force for the subsequent reset of the sleeve 287.

[0065] Specifically, the limiting component 29 includes a slot 291 formed on the surface of the pressure plate 24, a square groove 292 formed in the sleeve plate 287, a block 293 sliding on the inner wall of the square groove 292, a locking rod 294 sliding on the sleeve plate 287, and one end of the locking rod 294 fixed to the block 293. The locking rod 294 cooperates with the slot 291. Two slots 291 are provided on both sides of the pressure plate 24. The locking rod 294 passes through the sleeve plate 287 and is slidably connected to it.

[0066] When it is necessary to release the positioning pin 26 from the limit of bolt 21, pull the handle 296 to move the locking rod 294, thereby causing one end of the locking rod 294 to disengage from the original locking groove 291. Then, move the handle 296 and the sleeve 287 upward, and insert the handle 296 into the locking groove 291 at the upper end of the pressure plate 24 to fix the sleeve 287. During this process, the guide frame 285 moves upward, causing the guide pin 286 to move from the first part of the guide frame 285 through the second part and into the third part, thereby causing the valve to... The rod 284 and valve block 283 move to open the air hole 282 and connect it with the channel 234, thereby connecting the chamber and the channel with the atmosphere. This causes the positioning pin 26 and piston 2392 to lose gas thrust. Under the magnetic attraction of magnet 212, the positioning pin 26 resets and disengages from the positioning groove 25, and the push plate 2394 resets under the rebound of spring 2395. Then, the reverse bolt 21 moves upward to release the downward pressure on the pressure plate 24 and unlock the fixation of the tool.

[0067] Specifically, a second spring piece 295 is fixed between the surfaces of block 293 and the upper end of the locking rod 294 is fixed with a handle 296. Through the setting of the second spring piece 295, when block 293 moves in the square groove 292, it deforms, providing force for the subsequent reset of block 293 and locking rod 294, so that the locking rod 294 is stably inserted into the locking groove 291.

[0068] When in use, the blade is initially held in place: pull the pull ring 274 to move the round tube 273 and the pressure plate 24 upward, and the spring 272 is compressed; place the blade on the mounting base 1, release the pull ring 274, and the spring 272 rebounds to move the pressure plate 24 downward, contact the blade surface and initially hold and limit it, and the initial fixation can be completed without manual support.

[0069] Centering and fixing with bolt 21: Rotate bolt 21 to move it up and down on nut 211. Bolt 21 pushes ring block 2711, connecting plate 2710 and movable column 275 down. Movable column 275 drives piston 1 235 to squeeze gas in air chamber 1 232. Gas pushes piston 2392 in air chamber 233 through channel 1 234, causing push plate 2394 and rubber pad 2310 to move closer together, pushing the blade to the center position. At the same time, gas enters air chamber 3 236 through channel 2 237, pushing positioning column 26 up. Bolt 21 continues to move down until it is in close contact with pressure plate 24. Positioning column 26 is inserted into positioning groove 25 on bolt 21 under gas pressure, completing bolt 21 anti-reverse locking.

[0070] Unlocking and Resetting: When replacing the blade, pull the handle 296 to disengage the locking rod 294 from the slot 291. The upward-moving sleeve plate 287 drives the guide frame 285 to move. The guide post 286 drives the valve stem 284 and valve block 283 to open the air hole 282, connecting the air chamber and the channel to the atmosphere. The positioning post 26 resets and disengages from the positioning slot 25 under the action of gravity and the magnetic attraction of the magnet 212. The push plate 2394 resets under the action of the spring 2395. The reverse-rotating bolt 21 moves upward, and the pull ring 274 lifts the pressure plate 24, allowing the blade to be removed and the unlocking process to be completed.

[0071] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A cutting tool fixing device for CNC machine tool processing, characterized in that: include, Mounting base (1), installed on a CNC machine tool; as well as, A fixing mechanism (2) is fixed on a mounting base (1), including a nut (211) fixed on the mounting base (1). The inner wall of the nut (211) is threaded with a bolt (21). A groove (22) is opened in the lower end of the bolt (21). A clamping member (27) is installed on the mounting base (1), and the clamping member (27) cooperates with the bolt (21). A positioning groove (25) is opened at the bottom of the bolt (21). A pressure plate (24) is fixed at the lower end of the clamping member (27). Positioning members (25) are respectively installed on the pressure plate (24). 3) and opening and closing component (28), the opening and closing component (28) cooperates with the positioning component (23), the pressure plate (24) has a sliding positioning post (26), and the positioning post (26) cooperates with the positioning component (23) and the positioning groove (25) respectively. The opening and closing component (28) is equipped with a limiting component (29). The pressure plate (24) has a groove (210) on the top, and the groove (210) cooperates with the limiting component (29). The pressure plate (24) has a magnet (212) fixed inside, and the magnet (212) cooperates with the positioning post (26).

2. The cutting tool fixing device for CNC machine tool processing as described in claim 1, characterized in that: The holding member (27) includes a vertical rod (271) that slides on the inner wall of the groove (22), and the lower end of the vertical rod (271) is fixed to the top of the pressure plate (24). A spring (272) is sleeved on the lower surface of the vertical rod (271), and the two ends of the spring (272) abut against the inner wall of the groove (22) and the top of the pressure plate (24) respectively. A round tube (273) slides on the mounting base (1), and the lower end of the round tube (273) is fixed to the top of the pressure plate (24). A pull ring (274) is fixed on the upper end of the round tube (273). A movable column (275) slides on the pressure plate (24) and the inner wall of the round tube (273), and the movable column (275) cooperates with the positioning member (23).

3. The cutting tool fixing device for CNC machine tool processing as described in claim 2, characterized in that: A slider (276) slides on the circular tube (273), and the slider (276) is fixed to the upper surface of the movable column (275). A short rod (277) is fixed to the bottom of one end of the slider (276), and a limit block (278) is fixed to the lower end of the short rod (277). A circular block (279) is slidably sleeved on the surface of the short rod (277), and the circular block (279) cooperates with the limit block (278). A connecting plate (2710) is fixed to the surface of the circular block (279), and a ring block (2711) is fixed to one end of the connecting plate (2710). The ring block (2711) cooperates with the groove (22) and the groove (210) respectively. A spring (2712) is sleeved on the lower surface of the circular tube (273), and the two ends of the spring (2712) are fixed to the bottom of the slider (276) and the top of the pressure plate (24) respectively.

4. The cutting tool fixing device for CNC machine tool processing as described in claim 3, characterized in that: The positioning component (23) includes a vertical block (231) fixed to the bottom of the pressure plate (24). The vertical block (231) has an air chamber 1 (232), an air chamber 2 (233) and a channel 1 (234) respectively. The channel 1 (234) is connected to the air chamber 1 (232) and the air chamber 2 (233) respectively. The opening and closing component (28) is fixed to one side of the vertical block (231) and the opening and closing component (28) cooperates with the channel 1 (234). A piston 1 (235) slides in the air chamber 1 (232) and the piston 1 (235) is fixed to the lower end of the movable column (275). A pusher (239) is installed on the vertical block (231) and a rubber pad (2310) is fixed to one side of the pusher (239).

5. The cutting tool fixing device for CNC machine tool processing as described in claim 4, characterized in that: The pressure plate (24) has an air chamber three (236) inside, and the pressure plate (24) and the vertical block (231) have a channel two (237) inside. The channel two (237) is connected to the air chamber two (233) and the air chamber three (236) respectively. The pressure plate (24) has a slot (238) at the top, and the slot (238) is connected to the air chamber three (236). The positioning column (26) slides in the slot (238), and the magnet (212) is fixed to the inner wall of the slot (238).

6. The cutting tool fixing device for CNC machine tool processing as described in claim 4, characterized in that: The pusher (239) includes a circular groove (2391) formed on the inner wall of the second air chamber (233). A piston (2392) slides on the inner wall of the circular groove (2391). A pusher (2393) slides on the vertical block (231). One end of the pusher (2393) is fixed to the surface of the piston (2392) inside the circular groove (2391). A pusher plate (2394) is fixed to the end of the pusher (2393) away from the piston (2392). A rubber pad (2310) is fixed to one side of the pusher plate (2394). A spring (2395) is fixed between the surface of the vertical block (231) and the inner wall of the pusher plate (2394).

7. The cutting tool fixing device for CNC machine tool processing as described in claim 1, characterized in that: The positioning groove (25) is provided with an inclined surface (251) and a vertical surface (252), and the positioning post (26) is matched with the inclined surface (251) and the vertical surface (252) respectively.

8. The cutting tool fixing device for CNC machine tool processing as described in claim 1, characterized in that: The opening and closing component (28) includes a valve housing (281) fixed to one side of the vertical block (231), and the valve housing (281) is connected to the channel (234). The surface of the valve housing (281) is provided with an air hole (282). A valve block (283) slides on the inner wall of the valve housing (281). A valve stem (284) slides on the valve housing (281), and one end of the valve stem (284) is fixed to one side of the valve block (283). A guide frame (285) slides on the valve housing (281) and the valve stem (284). A guide post (286) is fixed on the valve stem (284), and the guide post (286) slides in the guide frame (285). A sleeve plate (287) slides on the pressure plate (24). A spring piece (288) is fixed between the bottom of the sleeve plate (287) and the surface of the valve housing (281).

9. The cutting tool fixing device for CNC machine tool processing as described in claim 8, characterized in that: The limiting member (29) includes a slot (291) formed on the surface of the pressure plate (24), a square groove (292) formed in the sleeve plate (287), a block (293) sliding on the inner wall of the square groove (292), a locking rod (294) sliding on the sleeve plate (287), and one end of the locking rod (294) fixed on the block (293), and the locking rod (294) cooperating with the slot (291).

10. The cutting tool fixing device for CNC machine tool processing as described in claim 9, characterized in that: A spring clip (295) is fixed between the surfaces of the block (293) and the block (293), and a handle (296) is fixed at the upper end of the lever (294).

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