Automatic locking device for machine tool cutter and using method of automatic locking device

Abstract

The invention belongs to the technical field of machine tool machining equipment, and particularly relates to an automatic locking device for a machine tool cutter and a using method thereof. Comprising a clamping base, a transmission part is arranged in the clamping base and drives a rotating base in the clamping base to rotate, the rotating base is rotationally arranged in the clamping base, one end of the rotating base is connected with a shaft head, the shaft head is provided with a locking channel for a machining tool to be inserted in, a fixed magnetic part is arranged in the locking channel, and an attracted part is correspondingly arranged on the machining tool. The locking channel is further provided with a locking piece, a clamping groove corresponding to the locking piece is formed in a rod body, stretching into the locking channel, of the machining tool, the machining tool is inserted into the locking channel, and the locking piece in the shaft head can abut against the clamping groove in the machining tool in the radial direction of the machining tool to elastically abut against the machining tool. And the automatic locking device can realize quick replacement of the cutter, so that the downtime is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of machine tool processing equipment, and in particular relates to an automatic locking device for a machine tool tool and a use method thereof. Background Art

[0002] Existing machine tool tools such as milling cutters are usually fixed with spring chucks. During installation, the nut needs to be tightened to make the spring sleeve radially contract and clamp the column handle of the milling cutter. Since the clamping force of the spring chuck is achieved by tightening the nut, it is difficult to ensure that the clamping force is completely consistent each time, which may cause the tool to loosen or shift during the processing. At the same time, in order to facilitate the replacement of the milling cutter, the spring chuck is often removed, the chuck is locked by a specific clamp, and then the nut is rotated to release the spring sleeve from clamping the milling cutter, and then the milling cutter is disassembled. The tool changing process is relatively complicated and time-consuming, which affects production efficiency. Summary of the invention

[0003] The purpose of the present invention is to provide an automatic locking device for machine tool tools and a method of using the same in order to solve the above-mentioned technical problems. The automatic locking device can realize the rapid replacement of tools, reduce downtime, and thus improve production efficiency.

[0004] In view of this, the present invention provides an automatic locking device for machine tool tools, including a clamping seat, a transmission component is arranged in the clamping seat, the transmission component drives a rotating seat in the clamping seat to rotate, the rotating seat is rotatably arranged in the clamping seat, one end of the rotating seat is connected to an axis head, and it is characterized in that the axis head is provided with a locking channel for inserting a processing tool, a fixed magnetic part is arranged in the locking channel, a suction part is correspondingly arranged on the processing tool, and a locking piece is also provided in the locking channel, a slot is provided on the rod body of the processing tool extending into the locking channel corresponding to the locking piece, and the processing tool is inserted into the locking channel, and the locking piece in the axis head can press into the slot on the processing tool along the radial direction of the processing tool to elastically press the processing tool.

[0005] In the present technical scheme, when it is necessary to replace the tool, the machine tool is shut down and the fixed magnetic part in the locking channel is no longer energized. At this time, the magnetic connection between the fixed magnetic part and the attracted part is disconnected. At this time, the processing tool is only limited by the locking part and connected to the locking channel, that is, the slot on the processing tool rod is elastically pressed by the locking part in the locking channel. After waiting for the processing tool to cool down, the operator pulls out the processing tool along the axial direction of the locking channel, or pulls out the processing tool along the axial direction of the locking channel by wearing heat-insulating gloves and using a clamping device, takes out the replaced processing tool and inserts it into the shaft head, waits until the processing tool contacts the bottom wall of the locking channel, rotates the processing tool until the locking part in the locking channel extends into the slot on the processing tool rod for elastic pressure, releases the processing tool, and energizes the fixed magnetic part in the locking channel. A stable and reliable magnetic connection is formed between the fixed magnetic part and the attracted part on the processing tool to firmly fix the processing tool in the locking channel, and the replacement of the processing tool is completed. The automatic locking device uses an electromagnet to quickly clamp and release the machining tool, thereby improving machining efficiency and safety. The automatic locking device can realize rapid tool replacement, reduce downtime, and thus improve production efficiency. Through the rapid response of the electromagnet, the machining tool can be instantly locked and released, shortening the tool change cycle. The setting of the locking part plays a role in positioning the machining tool in the locking channel and limiting the machining tool in the locking channel after the fixed magnetic part of the machine tool is shut down and the power is cut off, thereby preventing the machining tool from falling off.

[0006] In the above technical solution, further, the processing tool includes a tool rod, and the tool rod is provided with a cutting part, a pinching part and a clamping part in sequence along the length direction of the rod body. The clamping part is provided with a suction part and a slot, and the pinching part is outside the shaft head when the processing tool is installed in the locking channel.

[0007] In the present technical solution, the cutting part is the blade part used for cutting and processing parts. The operator inserts and removes the processing tool through the holding part (by hand or relying on tools). When the processing tool is installed in the locking channel and fixed, the holding part on the arbor of the processing tool is outside the locking channel. When inserting and removing the processing tool, force is applied to the holding part to avoid bumping against the cutting part and protect the operator from being cut by the cutting part.

[0008] In the above technical scheme, further, the fixed magnetic part is an annular electromagnet, which is fixedly arranged in an annular mounting groove opened on the side wall of the locking channel, and the attracted part is an annular block made of magnetic conductive material, which is fixedly arranged in an annular mounting groove opened at the end of the tool rod. When the machining tool is installed, the fixed magnetic part and the attracted part are in contact with each other, and a stable and reliable magnetic connection can be formed therebetween.

[0009] In the present technical solution, the magnetically conductive material used in the receiving part may be electrical pure iron, which is a high-purity iron material with excellent magnetic conductivity and low coercive force, and can produce a strong magnetization intensity under a small external magnetic field. Silicon steel sheets (silicon steel sheets) may also be used. Silicon steel sheets (silicon steel sheets) are iron alloys with a high silicon content and have excellent soft magnetic properties, such as low coercive force and high magnetic permeability. These characteristics enable silicon steel sheets to provide a more stable magnetic connection when making the receiving part. The fixed magnetic part and the receiving part are both annular structures. When the machining tool is installed in the locking channel, the fixed magnetic part and the receiving part can abut against each other. The fixed magnetic part and the receiving part of the annular structure can provide a larger contact area, thereby generating a stronger magnetic force. This design ensures that the tool can remain stable and not fall off when rotating at high speed or subjected to external force.

[0010] In the above technical scheme, further, the locking part includes a locking sleeve, which is arranged in a corresponding placement groove in the locking channel. The locking sleeve is provided with a clamping channel for the processing tool to pass through along the central axis. A clamping channel connected to the clamping channel is arranged in the locking sleeve along the radial direction. A clamping ball is movably arranged in the clamping channel. A pushing component is arranged in the locking sleeve. The pushing component can push the clamping ball part out of the clamping channel. The part of the clamping ball in the clamping channel can be embedded in the clamping groove on the processing tool to elastically clamp the processing tool.

[0011] In the present technical scheme, the central axes of the clamping channel and the locking channel coincide and have the same radius, the outer wall of the locking sleeve is symmetrically provided with limit slide rails, the shaft head is correspondingly provided with slide grooves, the mounting grooves are threadedly connected with end covers to fix the locking piece in the mounting grooves, and the clamping channel is closed at the connection with the clamping channel, which can limit the part of the clamping ball from extending out of the clamping channel and entering the clamping channel while preventing the clamping ball from escaping from the clamping channel. In the embodiment, the clamping channel and the clamping ball movably arranged in the clamping channel are arranged around the circumference of the locking channel, and there are three groups in the embodiment, and the number of groups can be more or less in other embodiments.

[0012] In the above technical solution, further, the ejection component is a first spring, which is arranged in the clamping channel, one end of the first spring is connected to the bottom wall of the clamping channel, and the other end is fixedly connected to the clamping ball.

[0013] In the above technical solution, further, the pushing component includes a pressure block, one end of the pressure block is connected to a second spring, the other end of the second spring is connected to the sliding groove, the sliding groove is vertically connected to the clamping channel, the second spring pushes the pressure block into the clamping channel, presses the clamping ball part into the clamping channel, and elastically clamps the clamping groove on the processing tool.

[0014] In the above technical solution, further, the pressing block is in a wedge shape, and the pressing inclined surface on the pressing block abuts against the clamping ball under the elastic action of the second spring.

[0015] In the present technical scheme, during installation, the machining tool shaft enters the clamping channel, and the shaft presses the receiving ball to move along the clamping channel toward the side away from the clamping channel, pressing the compression slope on the pressure block, causing the pressure block to move along the sliding groove, and the second spring is compressed. When the machining tool completely enters the locking channel and the machining tool is rotated so that the clamping groove on the clamping part of the shaft is aligned with the clamping channel, the receiving ball is no longer squeezed by the shaft, and the second spring drives the pressure block to reset and push the receiving ball into the clamping channel to compress the receiving ball part to extend into the clamping channel to elastically clamp the clamping groove on the machining tool.

[0016] In the above technical solution, further, the pushing component includes a pushing seat abutting against the locking ball, the pushing seat is slidably arranged in the locking channel, the pushing seat is abutted against a sealing plug on the other side of the locking ball, and the sealing plug is away from the side of the locking ball and the locking channel to form a first chamber for accommodating compressed gas.

[0017] In the above technical solution, further, the ejection component is a third spring, and the third spring is arranged in the first through groove. The first through groove is an annular groove body, and the first through groove is connected to several clamping channels circumferentially arranged in the fixed sleeve. Several third springs are arranged in the first through groove, and any third spring is connected to any adjacent clamping balls. The third spring pulls the clamping ball part into the clamping channel to elastically clamp the clamping groove on the processing tool.

[0018] In the present technical scheme, a plurality of locking balls are connected to form an annular stretching and pushing structure through a third spring. When the shaft of the processing tool enters the clamping channel, a plurality of locking balls connected by the third spring in the locking channel are pressed and synchronously move away from each other along the locking channel. When the processing tool completely enters the locking channel and the processing tool is rotated so that the slot on the clamping part of the shaft is aligned with the locking channel, the locking ball is no longer squeezed by the shaft, and the third spring pulls the locking ball to synchronously move closer to each other along the locking channel, and the locking ball part extends into the clamping channel to elastically lock the slot on the processing tool.

[0019] Also included is a method for using the above-mentioned machine tool tool automatic locking device, comprising the following steps:

[0020] S1: Stopping the machine. After stopping the machine tool, make sure that the machining tool has completely stopped rotating, and then stop energizing the fixed magnetic part. The fixed magnetic part and the attracted part are no longer magnetically connected. At this time, the machining tool is only clamped in the locking channel by the locking piece.

[0021] S2: Remove the cutter by using heat-insulating gloves or clamping equipment to pull it out along the locking channel through the gripping part on the processing tool.

[0022] S3: tool change, take out the machining tool to be replaced, align the clamping part of the machining tool with the locking channel, apply force at the clamping part of the machining tool to send the machining tool into the clamping channel, when the machining tool abuts against the bottom wall of the clamping channel, rotate the machining tool until the clamping ball in the locking piece is embedded in the clamping groove on the machining tool shaft to complete the preliminary locking of the machining tool in the locking channel;

[0023] S4: Magnetization, the fixed magnetic part is energized, a stable magnetic connection is formed between the fixed magnetic part and the attracted part, and the machine tool can be started for processing.

[0024] The beneficial effects of the present invention are:

[0025] 1. The automatic locking device can realize the rapid clamping and release of the machining tool through the electromagnet, which improves the machining efficiency and safety. The automatic locking device can realize the rapid replacement of the tool, reduce the downtime, and thus improve the production efficiency. Through the rapid response of the electromagnet, the machining tool can be locked and released immediately, shortening the tool change cycle. The setting of the locking part plays a role in positioning the machining tool in the locking channel and limiting the machining tool in the locking channel after the fixed magnetic part of the machine tool is shut down and the power is cut off, preventing the machining tool from falling off;

[0026] 2. The locking piece includes a locking sleeve, which is arranged in a corresponding placement groove in the locking channel. The locking sleeve is provided with a clamping channel for the processing tool to pass through along the central axis. A clamping channel connected to the clamping channel is arranged in the locking sleeve along the radial direction. A clamping ball is movably arranged in the clamping channel. A pushing component is arranged in the locking sleeve. The pushing component can push the clamping ball part out of the clamping channel. The part of the clamping ball in the clamping channel can be embedded in the clamping groove on the processing tool to elastically clamp the processing tool, which makes the disassembly and assembly of the processing tool very convenient, reduces downtime and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a cross-sectional view of the present invention;

[0028] Figure 2 It is a structural schematic diagram of a machining tool;

[0029] Figure 3 is a schematic cross-sectional structural diagram of the locking member in the first embodiment;

[0030] Figure 4 yes Figure 3 A local enlarged schematic diagram of the middle A;

[0031] Figure 5 is a schematic cross-sectional structural diagram of a locking member in the second embodiment;

[0032] Figure 6 yes Figure 5 A partial enlarged schematic diagram of point B in the middle;

[0033] Figure 7 is a schematic cross-sectional structural diagram of a locking member in a third embodiment;

[0034] Figure 8 yes Figure 7 A partial enlarged schematic diagram of point C in the middle;

[0035] Fig. 9 2 is a schematic plan cross-sectional structural diagram of the locking member in the fourth embodiment.

[0036] The symbols in the figure are:

[0037] 1. Clamping seat; 2. Transmission component; 3. Rotating seat; 4. Shaft head; 5. Processing tool; 6. Locking channel; 7. Fixed magnetic part; 8. Suction part; 9. Locking piece; 10. Slot; 11. Tool bar; 12. Cutting part; 13. Holding part; 14. Clamping part; 15. Mounting groove; 16. Accommodating groove; 17. Locking sleeve; 18. Clamping channel; 19. Card connection channel; 20. Card connection ball; 21. First spring; 22. Limiting slide rail; 23. End cover; 24. Pressing block; 25. Second spring; 26. Sliding groove; 27. Compression slope; 28. Pushing seat; 29. ​​Sealing plug; 30. Compressed gas; 31. First chamber; 32. Third spring; 33. First through groove. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0039] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0040] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0041] It should be noted that, in the description of the present application, the orientation or positional relationship indicated by terms such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise stated, these orientation words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application; the orientation words "inside and outside" refer to the inside and outside relative to the contour of each component itself.

[0042] It should be noted that, in the present application, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises one..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be noted that the scope of the method and device in the embodiment of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0043] First embodiment:

[0044] like Figure 1-4As shown, this embodiment provides an automatic locking device for machine tool tools, including a clamping seat 1, a transmission component 2 is arranged in the clamping seat 1, the transmission component 2 drives a rotating seat 3 in the clamping seat 1 to rotate, the rotating seat 3 is rotatably arranged in the clamping seat 1, one end of the rotating seat 3 is connected to a shaft head 4, the shaft head 4 is provided with a locking channel 6 for inserting a processing tool 5, a fixed magnetic part 7 is arranged in the locking channel 6, a suction part 8 is correspondingly arranged on the processing tool 5, and a locking piece 9 is also provided in the locking channel 6. A slot 10 is provided on the rod of the processing tool 5 extending into the locking channel 6 corresponding to the locking piece 9. When the processing tool 5 is inserted into the locking channel 6, the locking piece 9 in the shaft head 4 can press into the slot 10 on the processing tool 5 along the radial direction of the processing tool 5 to elastically press the processing tool 5.

[0045] When the tool needs to be replaced, the machine tool is shut down and the fixed magnetic part 7 in the locking channel 6 is no longer energized. At this time, the magnetic connection between the fixed magnetic part 7 and the suction part 8 is disconnected. At this time, the machining tool 5 is only limited by the locking member 9 and is connected to the locking channel 6, that is, the slot 10 on the shaft of the machining tool 5 is elastically pressed by the locking member 9 in the locking channel 6. After the machining tool 5 cools down, the operator can pull out the machining tool 5 along the axial direction of the locking channel 6, or wear heat-insulating gloves or use a clamping device to pull out the machining tool 5 along the axial direction of the locking channel 6. The machining tool 5 is taken out and inserted into the shaft head 4, and the machining tool 5 is contacted with the bottom wall of the locking channel 6. The machining tool 5 is rotated until the locking piece 9 in the locking channel 6 extends into the slot 10 on the tool rod 11 of the machining tool 5 for elastic pressure. The machining tool 5 is released, and the fixed magnetic part 7 in the locking channel 6 is energized. A stable and reliable magnetic connection is formed between the fixed magnetic part 7 and the attracted part 8 on the machining tool 5 to firmly fix the machining tool 5 in the locking channel 6, and the replacement of the machining tool 5 is completed. The automatic locking device realizes the rapid clamping and releasing of the processing tool 5 through the electromagnet, thereby improving the processing efficiency and safety. The automatic locking device can realize the rapid replacement of the tool, reduce the downtime, and thus improve the production efficiency. Through the rapid response of the electromagnet, the processing tool 5 can be instantly locked and released, shortening the tool change cycle. The setting of the locking member 9 plays a role in positioning the processing tool 5 in the locking channel 6 and limiting the processing tool 5 in the locking channel 6 after the fixed magnetic part 7 of the machine tool is shut down and the power is cut off, thereby preventing the processing tool 5 from falling off.

[0046] The connection method between the clamping base 1 and the machine tool, the internal transmission component 2 of the clamping base 1 driving the rotating base 3, and the connection between the shaft head 4 and the rotating base 3 are all prior arts, so they are not elaborated in detail.

[0047] like Figure 2As shown, the machining tool 5 includes a tool rod 11, and the tool rod 11 is provided with a cutting portion 12, a pinching portion 13 and a clamping portion 14 in sequence along the length direction of the rod body. The clamping portion 14 is provided with a suction portion 8 and a slot 10. The pinching portion 13 is outside the shaft head 4 when the machining tool 5 is installed in the locking channel 6.

[0048] The cutting portion 12 is a blade portion used for cutting and processing parts. The operator inserts and removes the processing tool 5 by holding the holding portion 13 (by hand or relying on tools). When the processing tool 5 is installed in the locking channel 6 and fixed, the holding portion 13 on the tool rod 11 of the processing tool 5 is outside the locking channel 6. When inserting and removing the processing tool 5, force is applied to the holding portion 13 to avoid collision with the cutting portion 12 and protect the operator from being cut by the cutting portion 12.

[0049] like Figure 1 and Figure 2 As shown, the fixed magnetic part 7 is an annular electromagnet, which is fixedly arranged in an annular mounting groove 15 opened on the side wall of the locking channel 6, and the attracted part 8 is an annular block made of magnetic conductive material, which is fixedly arranged in an annular mounting groove 16 opened at the end of the tool rod 11. When the processing tool 5 is installed, the fixed magnetic part 7 and the attracted part 8 are in contact with each other, and a stable and reliable magnetic connection can be formed therebetween.

[0050] The magnetically conductive material used in the receiving part 8 may be electrical pure iron, which is a high-purity iron material with excellent magnetic conductivity and low coercive force, and can produce a strong magnetization intensity under a small external magnetic field. Silicon steel sheets (silicon steel sheets) may also be used. Silicon steel sheets (silicon steel sheets) are iron alloys with a high silicon content and have excellent soft magnetic properties, such as low coercive force and high magnetic permeability. These characteristics enable silicon steel sheets to provide a more stable magnetic connection when making the receiving part 8. The fixed magnetic part 7 and the receiving part 8 are both annular structures. When the machining tool 5 is installed in the locking channel 6, the fixed magnetic part 7 and the receiving part 8 can abut against each other. The annular structure of the fixed magnetic part 7 and the receiving part 8 can provide a larger contact area, thereby generating a stronger magnetic force. This design ensures that the tool can remain stable and not fall off when rotating at high speed or subjected to external force.

[0051] like Figure 1-4 As shown, the locking member 9 includes a locking sleeve, which is arranged in a corresponding placement groove in the locking channel 6. The locking sleeve 17 is provided with a clamping channel 18 for the processing tool to pass through along the central axis. A clamping channel 19 connected to the clamping channel 18 is arranged in the locking sleeve along the radial direction. A clamping ball 20 is movably arranged in the clamping channel 19. A pushing component is arranged in the locking sleeve 17, and the pushing component can push part of the clamping ball 20 out of the clamping channel 19. The clamping ball 20 can be embedded in the clamping groove 10 on the processing tool 5 in the clamping channel 18 to elastically clamp the processing tool 5.

[0052] The central axes of the clamping channel 18 and the locking channel 6 coincide and have the same radius. The outer wall of the locking sleeve is symmetrically provided with a limiting slide rail 22, and a corresponding slide groove is provided in the shaft head 4. The mounting groove is threadedly connected with an end cover 23 to fix the locking piece 9 in the mounting groove 15. The clamping channel 19 is closed at the connection with the clamping channel 18, which can limit the partial extension of the clamping ball 20 from extending out of the clamping channel 19 and entering the clamping channel 18 while preventing the clamping ball 20 from escaping from the clamping channel 19. In the embodiment, the clamping channel 18 and the clamping ball 20 movably arranged in the clamping channel 18 are arranged around the circumference of the locking channel 6. In the embodiment, there are three groups, and in other embodiments, the number of groups can be more or less.

[0053] like Figure 3 and Figure 4 As shown, the ejection component is a first spring 21 , which is disposed in the clamping channel 19 , one end of the first spring 21 is connected to the inner bottom wall of the clamping channel 19 , and the other end is fixedly connected to the clamping ball 20 .

[0054] Second embodiment:

[0055] This embodiment provides an automatic locking device for machine tool tools, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0056] like Figure 5 and Figure 6 As shown, the pushing component includes a pressing block 24, one end of the pressing block 24 is connected to a second spring 25, the other end of the second spring 25 is connected to a sliding groove 26, the sliding groove 26 is vertically connected to the clamping channel 19, and the second spring 25 pushes the pressing block 24 into the clamping channel 19 to compress the clamping ball 20 to partially extend into the clamping channel 18 to elastically clamp the clamping groove 10 on the processing tool 5.

[0057] The pressing block 24 is in a wedge shape, and the pressing inclined surface 27 on the pressing block 24 abuts against the receiving ball 20 under the elastic action of the second spring 25 .

[0058] During installation, the shaft of the processing tool 5 enters the clamping channel 18, and the shaft presses the receiving ball 20 to move along the receiving channel 19 toward the side away from the clamping channel 18, pressing the compression slope 27 on the pressing block 24, so that the pressing block 24 moves along the sliding groove 26, and the second spring 25 is compressed. When the processing tool 5 completely enters the locking channel 6 and the processing tool 5 is rotated so that the slot 10 on the clamping part 14 of the shaft is aligned with the receiving channel 19, the receiving ball 20 is no longer squeezed by the shaft, and the second spring 25 drives the pressing block 24 to reset and push the receiving ball 20 into the receiving channel 19 to compress the receiving ball 20 to partially extend into the clamping channel 18 to elastically clamp the slot 10 on the processing tool 5.

[0059] Third embodiment:

[0060] like Figure 7 and Figure 8 As shown, this embodiment provides an automatic locking device for machine tool tools, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0061] The ejection component includes a pushing seat 28 abutting against the locking ball 20. The pushing seat 28 is slidably arranged in the locking channel 19. The pushing seat 28 is abutted against a sealing plug 29 on the other side of the locking ball 20. The sealing plug 29 is away from the side of the locking ball 20 and the locking channel 19 to form a first chamber 31 for accommodating compressed gas 30.

[0062] Fourth embodiment:

[0063] This embodiment provides an automatic locking device for machine tool tools, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0064] like Fig. 9 As shown, the ejection component is a third spring 32, and the third spring 32 is arranged in the first through groove 33. The first through groove 33 is an annular groove body. The first through groove 33 is connected through a plurality of clamping channels 19 circumferentially arranged in the fixed sleeve. A plurality of third springs 32 are arranged in the first through groove 33. Any third spring 32 is connected to any adjacent clamping ball 20. The third spring 32 pulls the clamping ball 20 to partially extend into the clamping channel 18 to elastically clamp the clamping groove 10 on the processing tool 5.

[0065] A plurality of latching balls 20 are connected to form an annular stretching and pushing structure through a third spring 32. When the shaft of the machining tool 5 enters the clamping channel 18, a plurality of latching balls 20 connected through the third spring 32 in the latching channel 19 are pressed and synchronously move away from each other along the latching channel 19. When the machining tool 5 completely enters the locking channel 6 and the machining tool 5 is rotated so that the slot 10 on the shaft clamping portion 14 is aligned with the latching channel 19, the latching balls 20 are no longer squeezed by the shaft, and the third spring 32 pulls the latching balls 20 synchronously move closer to each other along the latching channel 19. Part of the latching balls 20 extend into the clamping channel 18 to elastically latch the slot 10 on the machining tool 5.

[0066] Also included is a method for using the above-mentioned machine tool tool automatic locking device, comprising the following steps:

[0067] S1: Stopping the machine tool, after stopping the machine tool, confirm that the machining tool 5 has completely stopped rotating, and then the fixed magnetic part 7 stops being energized, and there is no longer a magnetic connection between the fixed magnetic part 7 and the attracted part 8. At this time, the machining tool 5 is only clamped in the locking channel 6 by the locking member 9;

[0068] S2: Remove the tool by using heat-insulating gloves or a clamping device through the gripping portion 13 on the processing tool 5 and pulling it out along the locking channel 6.

[0069] S3: tool change, take out the processing tool 5 to be replaced, align the clamping part 14 of the processing tool 5 with the locking channel 6, apply force on the holding part 13 of the processing tool 5 to send the processing tool 5 into the clamping channel, when the processing tool 5 abuts against the bottom wall of the clamping channel, rotate the processing tool 5 until the receiving ball 20 in the locking member 9 is embedded in the clamping groove 10 on the shaft of the processing tool 5 to complete the preliminary locking of the processing tool 5 in the locking channel 6;

[0070] S4: Magnetization, the fixed magnetic part 7 is energized, a stable magnetic connection is formed between the fixed magnetic part 7 and the attracted part 8, and the machine tool can be started for processing.

[0071] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. An automatic locking device for machine tool tools, comprising a clamping seat (1), a transmission component (2) is arranged in the clamping seat (1), the transmission component (2) drives a rotating seat (3) in the clamping seat (1) to rotate, the rotating seat (3) is rotatably arranged in the clamping seat (1), and one end of the rotating seat (3) is connected to a shaft head (4), characterized in that: The shaft head (4) is provided with a locking channel (6) for inserting a machining tool (5), a fixed magnetic portion (7) is provided in the locking channel (6), a suction portion (8) is correspondingly provided on the machining tool (5), and a locking piece (9) is also provided in the locking channel (6), a slot (10) is provided on a rod of the machining tool (5) extending into the locking channel (6) corresponding to the locking piece (9), and when the machining tool (5) is inserted into the locking channel (6), the locking piece (9) in the shaft head (4) can press into the slot (10) on the machining tool (5) along the radial direction of the machining tool (5) to elastically press the machining tool (5).

2. The automatic locking device for machine tool tools according to claim 1, characterized in that: The machining tool (5) comprises a tool rod (11), the tool rod (11) being provided with a cutting portion (12), a gripping portion (13) and a clamping portion (14) in sequence along the length direction of the rod body, the clamping portion (14) being provided with a suction portion (8) and a clamping groove (10), and the gripping portion (13) being located outside the shaft head (4) when the machining tool (5) is installed in the locking channel (6).

3. The automatic locking device for machine tool tools according to claim 2, characterized in that: The fixed magnetic part (7) is an annular electromagnet, and the fixed magnetic part (7) is fixedly arranged in an annular mounting groove (15) opened on the side wall of the locking channel (6). The suction part (8) is an annular block made of a magnetically conductive material, and the suction part (8) is fixedly arranged in an annular mounting groove (16) opened at the end of the tool rod (11). When the machining tool (5) is installed, the fixed magnetic part (7) and the suction part (8) are in contact with each other, and a stable and reliable magnetic connection can be formed therebetween.

4. The automatic locking device for machine tool tools according to any one of claims 1 and 3, characterized in that: The locking member (9) comprises a locking sleeve, which is arranged in a corresponding placement groove in the locking channel (6); the locking sleeve (17) is provided with a clamping channel (18) along the central axis for the processing tool to pass through; a clamping channel (19) is provided in the locking sleeve along the radial direction and is connected to the clamping channel (18); a clamping ball (20) is movably arranged in the clamping channel (19); a pushing component is provided in the locking sleeve (17), and the pushing component can push the clamping ball (20) part out of the clamping channel (19); the clamping ball (20) is embedded in the clamping groove (10) on the processing tool (5) in the clamping channel (18) to elastically clamp the processing tool (5).

5. The automatic locking device for machine tool tools according to claim 4, characterized in that: The ejection component is a first spring (21), which is arranged in the clamping channel (19), one end of the first spring (21) is connected to the inner bottom wall of the clamping channel (19), and the other end is fixedly connected to the clamping ball (20).

6. The automatic locking device for machine tool tools according to claim 4, characterized in that: The pushing component comprises a pressing block (24), one end of the pressing block (24) is connected to a second spring (25), the other end of the second spring (25) is connected to a sliding groove (26), the sliding groove (26) is vertically connected to the clamping channel (19), and the second spring (25) pushes the pressing block (24) into the clamping channel (19) to press the clamping ball (20) to partially extend into the clamping channel (18) to elastically clamp the clamping groove (10) on the processing tool (5).

7. The automatic locking device for machine tool tools according to claim 6, characterized in that: The pressing block (24) is wedge-shaped, and the pressing inclined surface (27) on the pressing block (24) is in contact with the clamping ball (20) under the elastic action of the second spring (25).

8. The automatic locking device for machine tool tools according to claim 4, characterized in that: The ejection component comprises a pushing seat (28) abutting against the locking ball (20), the pushing seat (28) being slidably arranged in the locking channel (19), the pushing seat (28) being abuttingly connected with a sealing plug (29) on the other side of the locking ball (20), and the sealing plug (29) being away from the side of the locking ball (20) and the locking channel (19) forming a first chamber (31) containing compressed gas (30).

9. The automatic locking device for machine tool tools according to claim 4, characterized in that: The ejection component is a third spring (32), which is arranged in a first through groove (33). The first through groove (33) is an annular groove body. The first through groove (33) is connected to a plurality of circumferentially arranged clamping channels (19) in the fixed sleeve. A plurality of third springs (32) are arranged in the first through groove (33). Any third spring (32) is connected to any adjacent clamping balls (20). The third spring (32) pulls the clamping ball (20) to partially extend into the clamping channel (18) to elastically clamp the clamping groove (10) on the processing tool (5).

10. A method for using the automatic locking device for machine tool according to claim 1, characterized in that: The following steps are involved: S1: Stopping the machine. After stopping the machine tool, confirm that the machining tool (5) has completely stopped rotating, and then the fixed magnetic part (7) stops being energized. The fixed magnetic part (7) and the attracted part (8) are no longer magnetically connected. At this time, the machining tool (5) is only clamped in the locking channel (6) by the locking member (9); S2: lowering the tool, and pulling it outward along the locking channel (6) through the holding portion (13) on the processing tool (5) by means of a heat-insulating glove or a clamping device; S3: tool change, take out the processing tool (5) to be replaced, align the clamping part (14) of the processing tool (5) with the locking channel (6), apply force at the gripping part (13) of the processing tool (5) to send the processing tool (5) into the clamping channel, and when the processing tool (5) abuts against the bottom wall of the clamping channel, rotate the processing tool (5) until the receiving ball (20) in the locking member (9) is embedded in the clamping groove (10) on the shaft of the processing tool (5) to complete the preliminary locking of the processing tool (5) in the locking channel (6); S4: Magnetization, the fixed magnetic part (7) is energized, a stable magnetic connection is formed between the fixed magnetic part (7) and the attracted part (8), and the machine tool can be started for processing.

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