Lathe tool rest facilitating quick tool changing and vibration suppression method thereof

Abstract

The invention discloses a lathe tool rest convenient for quick tool changing and a vibration suppression method thereof, and relates to the technical field of lathes, the lathe tool rest comprises a taper shank, a locking mandrel is slidably arranged in the taper shank, a plurality of through grooves are formed in the taper shank, steel balls are arranged in the through grooves, a floating seat is arranged on the locking mandrel, a positioning taper sleeve is slidably arranged on the outer side of the taper shank, and the positioning taper sleeve is arranged on the outer side of the taper shank. A forming cutting edge is arranged on the positioning taper sleeve, a locking groove is formed in the positioning taper sleeve, when the locking mandrel moves upwards, the steel balls enter the locking groove, the positioning taper sleeve is positioned, in the cutting process, when any steel ball vibrates, the corresponding floating seat moves and extrudes the corresponding steel ball, the extrusion force on the vibrating steel ball is enhanced, and therefore the forming cutting edge is formed. According to the lathe tool changing device, the extrusion force on the steel ball is adjusted, and the technical problem that an existing lathe tool changing device cannot conveniently adjust the pressure in real time according to the condition of the formed cutting edge is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lathe, and particularly relates to a lathe tool holder facilitating quick tool changing and a vibration suppression method thereof. BACKGROUND

[0002] The numerical control lathe is one of numerical control machine tools which are widely used at present, and is mainly used for cutting machining of shaft parts or disc parts, such as inner and outer cylindrical surface, inner and outer conical surface with any taper angle, complex rotary inner and outer curved surface, cylindrical thread and conical thread, and can also be used for cutting, drilling, reaming, reaming and boring, etc. The numerical control machine tool usually consumes a lot of tools during use.

[0003] The numerical control lathe relies on tools to process workpieces. During work, due to different sizes of workpieces, tools need to be frequently replaced to achieve the purpose of processing. However, when the tool changing operation of the lathe is performed at present, the tool is usually pressed by a threaded connection. This method is not only cumbersome to operate, but also may cause insufficient pre-tightening force or excessive extrusion, so that the tool is unstable during processing, and even the tool is damaged.

[0004] When the forming cutting operation is performed on the workpiece, the vibration of the forming blade is larger than that of the general tool due to the large contact area between the forming blade and the workpiece, which may cause large errors in the size of the processed workpiece. Moreover, the vibration of the forming blade will cause the vibration of the steel ball, accelerate the wear of the steel ball, and cause the steel ball to fail to accurately lock and position the taper sleeve, thereby causing greater vibration. Therefore, when the workpiece is formed, the clamp of the forming blade needs to have good anti-vibration and vibration reduction capability and stronger tool bar clamping capability.

[0005] When the forming operation is performed on the workpiece, the steel ball is always in an over-pressed and vibrated state due to the large contact area between the forming blade and the workpiece, which will accelerate the wear of the steel ball and even cause the steel ball to be crushed, resulting in rapid failure of the steel ball. Moreover, since the pressing force on the steel ball cannot be adjusted in real time, after multiple steel balls are worn to different degrees, some steel balls may be pressed too tightly, while other steel balls are relatively loose, so that the pressing force on different positions of the positioning taper sleeve is different, causing the positioning taper sleeve to be unstable in some areas, and thus causing the forming blade to vibrate greatly, increasing the uncertainty of the machining process. SUMMARY

[0006] The present application aims to provide a lathe tool holder facilitating quick tool changing and a vibration suppression method thereof, to solve the technical problem of the existing lathe tool changing device being inconvenient to adjust the pressure in real time according to the condition of the forming blade.

[0007] To achieve the above object, the present application provides the following technical scheme: A tool holder for lathe facilitating quick tool changing, comprising a taper shank, a locking arbor capable of moving up and down is slidably arranged in the taper shank, a plurality of through grooves are formed in the taper shank, a steel ball is arranged in each through groove, a plurality of floating seats corresponding to the steel balls are arranged on the locking arbor, a positioning taper sleeve is slidably arranged on the outer side of the taper shank, a shaped cutting edge is arranged on the positioning taper sleeve, and an annular locking groove is formed in the positioning taper sleeve; when the locking arbor moves upward, the steel ball enters the locking groove to position the positioning taper sleeve; in the cutting process, when any steel ball vibrates, the corresponding floating seat will move and press the corresponding steel ball, so as to increase the pressing force on the vibrating steel ball and improve the stability of the shaped cutting edge in the cutting process.

[0008] Preferably, a slide ram is arranged at the top of the taper shank, a hydraulic cylinder is fixed to the end of the slide ram away from the taper shank, a piston is slidably arranged in the hydraulic cylinder, the lower end of the piston extends out of the hydraulic cylinder and is fixedly connected to the top of the locking arbor, a cavity is formed in the locking arbor, a communication pipe for communicating the cavity and the hydraulic cylinder is arranged on the piston, and a first electromagnetic valve is arranged on the communication pipe.

[0009] Preferably, a plurality of cylinder bodies corresponding to the floating seats are fixedly arranged in the locking arbor, a push rod is slidably arranged in each cylinder body, each push rod extends out of the corresponding cylinder body and is fixedly connected to the corresponding floating seat, the end of each cylinder body away from the push rod is communicated with the cavity through a connecting pipe, and a second electromagnetic valve is arranged on each connecting pipe.

[0010] Preferably, a piezoelectric sensor is arranged on each floating seat, and a buffer in contact with the steel ball is arranged at one end of the piezoelectric sensor.

[0011] Preferably, an annular push groove is formed in the locking arbor, and the end face of the floating seat is in the same plane as the push groove.

[0012] Preferably, a battery is arranged in the locking arbor for storing the electric energy generated after the piezoelectric sensor is pressed, the piezoelectric sensor, the first electromagnetic valve and the second electromagnetic valve are electrically connected to the battery, the hydraulic cylinder, the first electromagnetic valve, the second electromagnetic valve, the battery and the piezoelectric sensor are electrically connected to the control system of the lathe, the hydraulic cylinder is divided into a first chamber and a second chamber through the piston, the communication pipe is communicated with the second chamber, and the first chamber is located at the end away from the slide ram.

[0013] A vibration suppression method for a tool holder for lathe facilitating quick tool changing, comprising the following steps: S1, installing the positioning taper sleeve on the taper shank, lifting the piston and driving the locking arbor to move upward, so that the push groove pushes the steel ball into the locking groove and locks the positioning taper sleeve; S2, detecting whether the extrusion force of each steel ball is the same through the piezoelectric sensor, if yes, the positioning is completed, if not, adjusting the extrusion force of the corresponding steel ball; S3, during cutting, detecting whether the vibration frequency of each steel ball is the same, if yes, no adjustment is needed, if some steel balls exceed the threshold value of vibration, adjusting the extrusion force of the steel ball; S4, when multiple steel balls simultaneously exceed the threshold value of vibration, closing the first electromagnetic valve and driving the locking mandrel to move upward, enhancing the extrusion force of the floating seat on the steel ball, and the vibration energy generated is converted into electric energy by the piezoelectric sensor and stored in the battery.

[0014] Preferably, the S2 comprises the following steps: S201, when the extrusion force of a single steel ball is insufficient, opening the second electromagnetic valve on the corresponding connecting pipe; S202, the hydraulic oil in the cavity enters the corresponding cylinder through the connecting pipe, and pushes the push rod to press the floating seat; S203, the floating seat extrudes the steel ball with insufficient extrusion force until the extrusion force at this position reaches the set value, and the positioning cone sleeve is positioned.

[0015] Preferably, the S3 comprises the following steps: S301, if the vibration of some steel balls exceeds the threshold value, that is, the piezoelectric sensor detects that the local steel ball pressure is insufficient, the control system opens the corresponding second electromagnetic valve in proportion; S302, the hydraulic oil in the cavity is shunted to the corresponding cylinder to balance the pressure of multiple steel balls.

[0016] Preferably, the S4 comprises the following steps: S401, when multiple steel balls simultaneously exceed the threshold value of vibration, the control system closes the first electromagnetic valve; S402, the hydraulic cylinder drives the piston to lift the locking mandrel, so that the floating seat strengthens the extrusion on the steel ball; S403, after the piezoelectric sensor detects that the vibration is weakened, the piston re-presses the locking mandrel to reduce the extrusion force on the steel ball, so as to realize real-time regulation of the extrusion force of the steel ball; S404, the piezoelectric sensor detects the vibration in real time and converts the vibration energy into electric energy and stores it in the battery; Preferably, the S404 further comprises the following steps: S4041, the piezoelectric sensor converts the vibration energy of the steel ball into electric energy and stores it in the battery; S4042, when the vibration amplitude suddenly increases, the first electromagnetic valve is closed, the hydraulic system supplies oil to the second chamber, and the hydraulic oil in the first chamber is extracted.

[0017] S4043, the hydraulic oil pressure in the second chamber is increased, so that the piston moves upward, so that the floating seat on the locking arbor extrudes the steel ball, and the vibration of the steel ball is suppressed.

[0018] S4044, after extrusion, the vibration is reduced, the hydraulic oil in the second chamber is extracted, and the hydraulic oil is delivered to the first chamber, and the piston moves downward.

[0019] The beneficial effects of the present application are: 1. By setting the push groove and the movable floating seat, the pressure of each steel ball can be adjusted after the piston and the locking arbor rise, and during the cutting process, and according to the different wear degrees of each steel ball, the floating seat can be adjusted individually, and the pressure of all steel balls can be adjusted simultaneously, solving the problem of large vibration force of the forming blade during cutting, which causes the size error of the machined parts. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a full cross-sectional structure schematic diagram of the present application when it is not locked.

[0021] Figure 2 It is a full cross-sectional structure schematic diagram of the present application when it is locked.

[0022] Figure 3 It is a structure schematic diagram of the locking arbor in the present application.

[0023] Figure 4 It is a full cross-sectional structure schematic diagram of the taper shank in the present application.

[0024] Figure 5 It is a full cross-sectional structure schematic diagram of the taper sleeve in the present application.

[0025] Figure 6 It is a full cross-sectional structure schematic diagram of the cylinder body in the present application.

[0026] The figure mark is: 1, taper shank; 101, through groove; 102, steel ball; 2, locking arbor; 201, floating seat; 202, cavity; 203, cylinder body; 204, push rod; 205, connecting pipe; 206, second electromagnetic valve; 207, piezoelectric sensor; 208, buffer; 209, push groove; 210, battery; 3, positioning taper sleeve; 301, forming blade; 302, locking groove; 4, ram; 5, hydraulic cylinder; 501, piston; 502, communication pipe; 503, first electromagnetic valve; 504, first chamber; 505, second chamber. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the scope of the present application. Embodiment 1

[0028] The numerical control lathe is one of numerical control machine tools that are widely used at present, and is mainly used for cutting machining of inner and outer cylindrical surfaces of shaft parts or disc parts, inner and outer conical surfaces with any taper angle, complex rotary inner and outer curved surfaces, cylindrical threads and conical threads, and can also be used for cutting grooves, drilling, expanding, reaming and boring, etc. The numerical control machine tool is usually used in a process in which tool consumption is large.

[0029] The numerical control lathe is used for machining workpieces by means of tools. Since the sizes of the machined workpieces are different, the tools need to be frequently replaced to achieve the machining purpose. However, in the operation of replacing the tools of the lathe at present, the tools are usually pressed by using a threaded connection mode. This mode is not only complicated to operate, but also may cause insufficient pre-tightening force or over-tightening when the bolts are directly connected, resulting in unstable machining of the tools or damage to the tools.

[0030] To solve the above technical problems, please refer to Figures 1 to 6 As shown in the figure, an embodiment of the lathe tool holder convenient for quick tool replacement comprises a taper handle 1, a locking mandrel 2 capable of moving up and down is slidably arranged in the taper handle 1, a plurality of through grooves 101 are formed in the taper handle 1, a steel ball 102 is arranged in each through groove 101, a plurality of floating seats 201 corresponding to the steel balls 102 are arranged on the locking mandrel 2, a positioning taper sleeve 3 is slidably arranged on the outer side of the taper handle 1, a shaped cutting edge 301 is arranged on the positioning taper sleeve 3, and an annular locking groove 302 is formed in the positioning taper sleeve 3. When the locking mandrel 2 moves upward, the steel balls 102 enter the locking groove 302 to position the positioning taper sleeve 3. In the cutting process, when any steel ball 102 vibrates, the corresponding floating seat 201 moves and presses the corresponding steel ball 102, so as to enhance the pressing force of the vibrating steel ball 102 and improve the stability of the shaped cutting edge 301 in the cutting process. A slide ram 4 is arranged at the top of the taper handle 1, a hydraulic cylinder 5 is fixed to the end of the slide ram 4 away from the taper handle 1, a piston 501 is slidably arranged in the hydraulic cylinder 5, the lower end of the piston 501 extends out of the hydraulic cylinder 5 and is fixedly connected to the top of the locking mandrel 2, an annular push groove 209 is formed in the locking mandrel 2, and the end face of the floating seat 201 is in the same plane as the push groove 209.

[0031] The initial state is set to lock the positioning cone sleeve 3. In use, the control system of the lathe first controls the hydraulic system and the hydraulic pipeline to supply oil to the first chamber 504, and the hydraulic system extracts the hydraulic oil in the second chamber 505 through the hydraulic pipeline, so that the piston 501 moves downward. The technology uses existing technology and is not described in detail here. At the same time, the push groove 209 and the floating seat 201 no longer extrude the steel ball 102, so that the steel ball 102 no longer extrudes the side wall of the locking groove 302.

[0032] After the piston 501 moves downward to a certain position and the steel ball 102 can completely escape from the locking groove 302, stop the hydraulic system from supplying oil to the first chamber 504 and extracting hydraulic oil from the second chamber 505, and then remove the positioning cone sleeve 3 from the taper handle 1. During this process, the locking groove 302 extrudes the steel ball 102 through the inclined side, causing the steel ball 102 to be extruded into the push groove 209 through the through groove 101. The push groove 209 is a ring-shaped V-shaped groove, and the two side walls are inclined surfaces. The locking groove 302 is annular, and the end surface of the locking groove 302 in contact with the steel ball 102 is an inclined surface.

[0033] A tool holder is provided on the positioning cone sleeve 3, and the tool holder is threadedly connected to the tool holder in advance through bolts and threaded holes. The forming tool edge 301 is connected to a tool bar, and the tool bar is connected to the tool holder through bolts, forming a modular forming tool edge 301, which saves tool changing time. This technology is existing technology and is not described in detail here. A plurality of key grooves are provided on the positioning cone sleeve 3, and a plurality of insertion keys are fixed on the taper handle 1 and inserted into the corresponding key grooves to prevent the positioning cone sleeve 3 from deflecting. Not shown in the figure.

[0034] Subsequently, the new positioning cone sleeve 3 is connected to the taper handle 1, so that the key grooves on the positioning cone sleeve 3 are connected to the corresponding insertion keys. The shapes or sizes of the insertion keys and the key grooves are designed to be different, which facilitates alignment. Subsequently, the control system of the lathe controls the hydraulic system to start, and the hydraulic system extracts the hydraulic oil in the first chamber 504 and provides hydraulic oil to the second chamber 505 through the hydraulic pipeline, so that the piston 501 moves upward. The piston 501 drives the locking mandrel 2 to move upward, the locking mandrel 2 pushes the steel ball 102 to move away from the axis of the locking mandrel 2 through the inclined surface of the floating seat 201, the steel ball 102 moves outward through the through groove 101 and extrudes the side wall of the locking groove 302, thereby locking and positioning the positioning cone sleeve 3, and completing the quick replacement of the forming tool edge 301.

[0035] Through the push groove 209, the through groove 101 and the locking groove 302, the inclined surface of the push groove 209 drives the steel ball 102 to move outward and the inclined surface of the locking groove 302 drives the steel ball 102 to move inward when the locking mandrel 2 moves up and down, thereby completing the locking and releasing of the positioning cone sleeve 3, and achieving the effect of quickly replacing the forming tool edge 301. Example 2

[0036] When the workpiece is subjected to a forming cutting operation, the contact area between the forming blade 301 and the workpiece is large, which causes the forming blade 301 to vibrate more greatly during machining of the workpiece than a general tool, which can cause a large error in the size of the machined workpiece. When the forming blade 301 vibrates, it causes the steel ball 102 to vibrate, thereby accelerating the wear of the steel ball 102, which prevents the steel ball 102 from accurately locking the positioning cone sleeve 3, thereby causing greater vibration. Therefore, when the workpiece is subjected to forming machining, the clamp of the forming blade 301 needs to have good anti-vibration and vibration reduction capability, and the tool bar needs to have stronger clamping capability.

[0037] To solve the above technical problems, on the basis of the above embodiments, please refer to Figures 1 to 6 As shown, it comprises a locking mandrel 2, a plurality of cylinder bodies 203 corresponding to the floating seat 201 are fixed in the locking mandrel 2, a push rod 204 slides in each cylinder body 203, each push rod 204 extends out of the corresponding cylinder body 203 and is fixedly connected with the corresponding floating seat 201, a piezoelectric sensor 207 is arranged on each floating seat 201, one end of the piezoelectric sensor 207 is provided with a buffer 208 in contact with the steel ball 102, and the floating seat 201 is slidingly connected with the locking mandrel 2.

[0038] In use, when the forming blade 301 vibrates during machining and forming of the workpiece, the vibration of the forming blade 301 is preliminarily damped by the buffer 208, and then the vibration is transmitted to the push rod 204 and the cylinder body 203 through the piezoelectric sensor 207 and the floating seat 201. The piezoelectric sensor 207 stores the electric energy generated by the vibration into the battery 210 to supply power for the opening and closing of the first electromagnetic valve 503 and the second electromagnetic valve 206. The cylinder body 203 is filled with hydraulic oil, and can be provided as a groove body or other forms, as long as the sealing of the cylinder body 203 is guaranteed. In this design, the cylinder body 203 is provided, so that the hydraulic oil in the cylinder body 203 has a certain damping effect, thereby weakening the vibration of the forming blade 301, so that the forming blade 301 can meet the size requirements during machining of the workpiece, thereby reducing the defective rate. The hydraulic oil can provide a reaction force for the push rod 204 to support the steel ball 102, thereby reducing the vibration of the steel ball 102 and the wear rate of the steel ball 102.

[0039] By providing the floating seat 201 and the buffer 208, the forming blade 301 has a certain damping capacity during forming machining of the workpiece, thereby reducing the defective rate of the workpiece and making the forming machining more reliable. Embodiment 3

[0040] On the basis of the above embodiment, only by hydraulic oil and so on to support the steel ball 102, although it can play a certain role in reducing vibration and delaying wear, but in the forming operation of the workpiece, due to the large contact area of the forming blade 301 and the workpiece, the steel ball 102 is always in the state of excessive extrusion and vibration, which will also accelerate the wear of the steel ball 102, and then lead to the rapid failure of the steel ball 102, and the extrusion force of the steel ball 102 cannot be adjusted in real time, after the wear of the steel ball 102 in different degrees, some steel balls 102 may be in the state of over-tight, while some steel balls 102 are in the state of relaxation, so that the extrusion force of the positioning cone sleeve 3 at different positions is different, which leads to the instability of the positioning cone sleeve 3, and the forming blade 301 appears large vibration, thereby increasing the uncertainty in the processing process.

[0041] In order to solve the above technical problems, on the basis of the above embodiment, please refer to Figures 1 to 6 As shown, it comprises a locking mandrel 2, a cavity 202 is formed in the locking mandrel 2, a communication pipe 502 for communicating the cavity 202 and the hydraulic cylinder 5 is arranged on the piston 501, a first electromagnetic valve 503 is arranged on the communication pipe 502, the cylinder body 203 is communicated with the cavity 202 through the connecting pipe 205 away from the push rod 204, a second electromagnetic valve 206 is arranged on each connecting pipe 205, a battery 210 is arranged in the locking mandrel 2 for storing the electric energy generated by the piezoelectric sensor 207 after being extruded and vibrated, the piezoelectric sensor 207, the first electromagnetic valve 503 and the second electromagnetic valve 206 are electrically connected with the battery 210, the hydraulic cylinder 5, the first electromagnetic valve 503, the second electromagnetic valve 206, the battery 210 and the piezoelectric sensor 207 are electrically connected with the control system of the lathe, the hydraulic cylinder 5 is divided into a first chamber 504 and a second chamber 505 by the piston 501, the communication pipe 502 is communicated with the second chamber 505, and the first chamber 504 is located away from the cross slide 4.

[0042] When the forming blade 301 is installed, the control system controls the hydraulic system to extract the hydraulic oil in the first chamber 504 and provide hydraulic oil into the second chamber 505, so that the piston 501 moves upward, and in this process, the first electromagnetic valve 503 and the second electromagnetic valve 206 are both in the closed state, the piston 501 drives the locking mandrel 2 to move upward, the floating seat 201 pushes the steel ball 102 to contact with the inclined surface of the locking groove 302, so as to position the positioning cone sleeve 3.

[0043] When the multiple floating seats 201 extrude the corresponding steel balls 102 respectively, the piezoelectric sensor 207 is used to detect the stress state of each steel ball 102, when the stress states of different steel balls 102 are different, the control system of the lathe is fed back after the detection of the piezoelectric sensor 207, and the control system controls the hydraulic system to start, so as to supplement the hydraulic oil to different cylinder bodies 203.

[0044] When one or more of the steel balls 102 are under excessive stress, the pressure is detected by the piezoelectric sensor 207 and fed back to the control system of the lathe, which opens the first electromagnetic valve 503 and the corresponding second electromagnetic valve 206, and the hydraulic system extracts the hydraulic oil in the second chamber 505, which is supplied by the cavity 202. The hydraulic oil in the cavity 202 is supplemented into the cavity 202 by the hydraulic oil in the corresponding cylinder 203 of the steel ball 102 under excessive stress through the connecting pipe 205 and the second electromagnetic valve 206, so that the corresponding push rod 204 retracts part of it, and the floating seat 201, the piezoelectric sensor 207 and the buffer 208 reduce the pressure on the steel ball 102 under excessive stress, so as to achieve the effect that the multiple steel balls 102 are under consistent stress and have sufficient extrusion force on the steel balls 102, and the extrusion force on the positioning cone sleeve 3 is the same.

[0045] When one or more of the steel balls 102 are under less stress, i.e. the steel balls 102 are seriously worn, the piston 501 moves to a higher position, and only part of the steel balls 102 can form sufficient pressure, while the other steel balls 102 cannot form sufficient pressure. When the hydraulic oil needs to be supplemented into the cylinder 203, the control system of the lathe controls the corresponding second electromagnetic valve 206 and the first electromagnetic valve 503 to open, and controls the hydraulic system to supply hydraulic oil into the second chamber 505. The supplied hydraulic oil enters the cylinder 203 through the second electromagnetic valve 206 and the connecting pipe 205 corresponding to the multiple steel balls 102 under less stress after passing through the communicating pipe 502 and the cavity 202, so that the push rod 204 moves the floating seat 201, the piezoelectric sensor 207 and the buffer 208 outward to extrude the steel balls 102 under less stress, thereby making up for the insufficient stress of the steel balls 102, and further extruding the steel balls 102 to lock the positioning cone sleeve 3.

[0046] The piezoelectric sensor 207, the first electromagnetic valve 503 and the second electromagnetic valve 206, the battery 210, the hydraulic cylinder 5, the control system of the lathe and the connection mode thereof are all prior art and will not be described in detail here.

[0047] By setting the push groove 209 and the movable floating seat 201, the pressure of each steel ball 102 can be adjusted after the piston 501 and the locking mandrel 2 are raised, and during the cutting process. According to the different wear degrees of each steel ball 102, the extrusion degree of the steel ball 102 can be adjusted individually by the floating seat 201, or the pressure of all steel balls 102 can be adjusted simultaneously, thereby solving the problem of large vibration force of the formed cutting edge 301 during the cutting process, which causes the size error of the machined part. Example 4

[0048] Based on the above-mentioned embodiment, the vibration suppression method of the tool holder for the lathe facilitating quick tool changing further comprises the following steps: S1, install the positioning cone sleeve 3 on the taper handle 1, the positioning cone sleeve 3 pushes the steel ball 102 to move into the through groove 101, then the control system controls the hydraulic system to supply oil into the second chamber 505 through the hydraulic pipeline, and extracts the hydraulic oil in the first chamber 504, so that the piston 501 is lifted and drives the locking mandrel 2 to move upward, the inclined surface of the push groove 209 on the locking mandrel 2 pushes the steel ball 102 into the locking groove 302 and contacts with the inclined surface of the locking groove 302, after a certain intensity of extrusion force is formed on the inclined surface of the locking groove 302, the steel ball 102 completes the locking of the positioning cone sleeve 3.

[0049] S2, detect whether the extrusion force of each corresponding steel ball 102 is the same through the piezoelectric sensor 207, if the extrusion force is the same and within a certain range and reaches a preset value, which is an initial setting, the positioning of the positioning cone sleeve 3 is completed, if not, adjust the extrusion force of the corresponding steel ball 102.

[0050] S3, when the lathe starts cutting the workpiece, the piezoelectric sensor 207 detects the pressure change of each steel ball 102, i.e. whether the vibration frequency is the same or within a preset vibration frequency range, if the same and within the preset range, the extrusion force of the steel ball 102 does not need to be adjusted, if part of the steel balls 102 exceed the threshold value of vibration, the extrusion force of the steel ball 102 exceeding the threshold value of vibration is adjusted.

[0051] S4, when multiple steel balls 102 simultaneously exceed the threshold value of vibration, the first electromagnetic valve 503 is closed and the locking mandrel 2 is driven to move upward, the extrusion force of the steel ball by the floating seat 201 is enhanced, and the vibration energy generated is converted into electrical energy by the piezoelectric sensor 207 and stored in the battery 210.

[0052] Specifically, S2 comprises the following steps: S201, when the extrusion force of a single steel ball 102 is insufficient, the second electromagnetic valve 206 on the corresponding connecting pipe 205 is opened, so that the hydraulic oil in the cavity 202 enters the corresponding cylinder 203 through the connecting pipe 205.

[0053] S202, the control system of the lathe controls the hydraulic system to start and provide hydraulic oil into the second chamber 505, then the hydraulic oil in the second chamber 505 enters the cavity 202 through the communication pipe 502, the hydraulic oil in the cavity 202 enters the corresponding cylinder 203 through the connecting pipe 205, or the corresponding second electromagnetic valve 206 is separately controlled to be opened, the hydraulic oil in the cylinder 203 is provided to the corresponding cylinder 203, the push rod 204 is pushed to press the floating seat 201 to move outward, only the purpose of moving the floating seat 201 outward needs to be achieved.

[0054] S203, the corresponding floating seat 201 is pressed again to the steel ball 102 with insufficient extrusion force until the extrusion force reaches the set value, and the positioning cone sleeve 3 is positioned.

[0055] Specifically, S3 includes the following steps: S301, if the partial steel ball 102 vibration exceeds the threshold value, that is, the piezoelectric sensor 207 detects that the corresponding floating seat 201 has insufficient pressure on the corresponding steel ball 102 to stabilize the positioning cone sleeve 3, the control system opens the corresponding second electromagnetic valve 206 in proportion, and the process can also be controlled by the control system to provide hydraulic oil into the cavity 202 through the second chamber 505 to maintain the pressure stability in the second chamber 505. The hydraulic oil in the cavity 202 is transported into the cylinder body 203 with insufficient pressure on the corresponding steel ball 102 to achieve the state of pressure balance of multiple steel balls 102, and the positioning cone sleeve 3 is stably locked to stabilize the cutting of the shaped cutting edge 301.

[0056] S302, the hydraulic oil in the cavity 202 is shunted to the cylinder body 203 with insufficient pressure on the corresponding steel ball 102 to achieve the state of pressure balance of multiple steel balls 102, and the positioning cone sleeve 3 is stably locked to stabilize the cutting of the shaped cutting edge 301.

[0057] Specifically, S4 includes the following steps: S401, when multiple steel balls 102 exceed the vibration threshold value at the same time, the control system directly controls the first electromagnetic valve 503 to close.

[0058] S402, the control system controls the hydraulic system to open and provide hydraulic oil into the second chamber 505, and extracts the hydraulic oil in the first chamber 504, so that the hydraulic cylinder 5 drives the piston 501 to move the locking mandrel 2 upward, so that the floating seat 201 increases the extrusion on the steel ball 102 again.

[0059] S403, after the piezoelectric sensor 207 detects that the vibration is weakened, the piston 501 re-presses the locking mandrel 2 to reduce the extrusion force on the steel ball 102, and realizes real-time regulation of the extrusion force on the steel ball 102.

[0060] S404, the piezoelectric sensor 207 detects the vibration of the steel ball 102 in real time and converts the vibration energy into electrical energy stored in the battery 210.

[0061] Specifically, S404 includes the following steps: S4041, the piezoelectric sensor 207 converts the vibration energy of the steel ball 102 into electrical energy stored in the battery 210, and the electrical energy stored in the battery 210 supplies the opening and closing of the first electromagnetic valve 503 and the second electromagnetic valve 206.

[0062] S4042, when the vibration amplitude suddenly increases, the battery 210 supplies power to the second electromagnetic valve 206 and the first electromagnetic valve 503 to close them, the hydraulic system supplies oil into the second chamber 505 and extracts hydraulic oil in the first chamber 504.

[0063] S4043, the hydraulic oil pressure in the second chamber 505 increases, so that the piston 501 moves up, thereby making the floating seat on the locking mandrel 2 extrude the steel ball 102, and inhibiting the vibration of the steel ball 102.

[0064] S4044, after extrusion, the vibration is weakened, the hydraulic oil in the second chamber 505 is extracted, and the hydraulic oil is delivered into the first chamber 504, and the piston 501 moves down.

[0065] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A tool holder for a lathe facilitating quick tool change, comprising a taper shank, characterized in that, The taper handle is internally slidably provided with a locking mandrel capable of moving up and down, a plurality of through grooves are formed in the taper handle, a steel ball is arranged in each through groove, a plurality of floating seats corresponding to the steel balls are arranged on the locking mandrel, a positioning taper sleeve is slidably arranged outside the taper handle, a shaped cutting edge is arranged on the positioning taper sleeve, and a locking groove is formed in the positioning taper sleeve.

2. The tool holder for a lathe according to claim 1, wherein The taper handle is internally slidably provided with a locking mandrel capable of moving up and down, a plurality of through grooves are formed in the taper handle, a steel ball is arranged in each through groove, a plurality of floating seats corresponding to the steel balls are arranged on the locking mandrel, a positioning taper sleeve is slidably arranged outside the taper handle, a shaped cutting edge is arranged on the positioning taper sleeve, and a locking groove is formed in the positioning taper sleeve.

3. The tool holder for a lathe according to claim 2, wherein The taper handle is internally slidably provided with a locking mandrel capable of moving up and down, a plurality of through grooves are formed in the taper handle, a steel ball is arranged in each through groove, a plurality of floating seats corresponding to the steel balls are arranged on the locking mandrel, a positioning taper sleeve is slidably arranged outside the taper handle, a shaped cutting edge is arranged on the positioning taper sleeve, and a locking groove is formed in the positioning taper sleeve.

4. The tool holder for a lathe according to claim 3, wherein The taper handle is internally slidably provided with a locking mandrel capable of moving up and down, a plurality of through grooves are formed in the taper handle, a steel ball is arranged in each through groove, a plurality of floating seats corresponding to the steel balls are arranged on the locking mandrel, a positioning taper sleeve is slidably arranged outside the taper handle, a shaped cutting edge is arranged on the positioning taper sleeve, and a locking groove is formed in the positioning taper sleeve.

5. The tool holder for a lathe according to claim 4, wherein The taper handle is internally slidably provided with a locking mandrel capable of moving up and down, a plurality of through grooves are formed in the taper handle, a steel ball is arranged in each through groove, a plurality of floating seats corresponding to the steel balls are arranged on the locking mandrel, a positioning taper sleeve is slidably arranged outside the taper handle, a shaped cutting edge is arranged on the positioning taper sleeve, and a locking groove is formed in the positioning taper sleeve.

6. The tool holder for a lathe according to claim 5, wherein The taper handle is internally slidably provided with a locking mandrel capable of moving up and down, a plurality of through grooves are formed in the taper handle, a steel ball is arranged in each through groove, a plurality of floating seats corresponding to the steel balls are arranged on the locking mandrel, a positioning taper sleeve is slidably arranged outside the taper handle, a shaped cutting edge is arranged on the positioning taper sleeve, and a locking groove is formed in the positioning taper sleeve.

7. A method for suppressing vibration of a tool holder for a lathe with quick tool change, according to any one of claims 1 to 6, characterized in that, The taper handle is internally slidably provided with a locking mandrel capable of moving up and down, a plurality of through grooves are formed in the taper handle, a steel ball is arranged in each through groove, a plurality of floating seats corresponding to the steel balls are arranged on the locking mandrel, a positioning taper sleeve is slidably arranged outside the taper handle, a shaped cutting edge is arranged on the positioning taper sleeve, and a locking groove is formed in the positioning taper sleeve. The taper handle is internally slidably provided with a locking mandrel capable of moving up and down, a plurality of through grooves are formed in the taper handle, a steel ball is arranged in each through groove, a plurality of floating seats corresponding to the steel balls are arranged on the locking mandrel, a positioning taper sleeve is slidably arranged outside the taper handle, a shaped cutting edge is arranged on the positioning taper sleeve, and a locking groove is formed in the positioning taper sleeve. The taper handle is internally slidably provided with a locking mandrel capable of moving up and down, a plurality of through grooves are formed in the taper handle, a steel ball is arranged in each through groove, a plurality of floating seats corresponding to the steel balls are arranged on the locking mandrel, a positioning taper sleeve is slidably arranged outside the taper handle, a shaped cutting edge is arranged on the positioning taper sleeve, and a locking groove is formed in the positioning taper sleeve. The taper handle is internally slidably provided with a locking mandrel capable of moving up and down, a plurality of through grooves are formed in the taper handle, a steel ball is arranged in each through groove, a plurality of floating seats corresponding to the steel balls are arranged on the locking mandrel, a positioning taper sleeve is slidably arranged outside the taper handle, a shaped cutting edge is arranged on the positioning taper sleeve, and a locking groove is formed in the positioning taper sleeve. The taper handle is internally slidably provided with a locking mandrel capable of moving up and down, a plurality of through grooves are formed in the taper handle, a steel ball is arranged in each through groove, a plurality of floating seats corresponding to the steel balls are arranged on the locking mandrel, a positioning taper sleeve is slidably arranged outside the taper handle, a shaped cutting edge is arranged on the positioning taper sleeve, and a locking groove is formed in the positioning taper sleeve.

8. The vibration suppression method of a tool post for a lathe that facilitates quick tool change according to claim 7, characterized in that, The taper handle is internally slidably provided with a locking mandrel capable of moving up and down, a plurality of through grooves are formed in the taper handle, a steel ball is arranged in each through groove, a plurality of floating seats corresponding to the steel balls are arranged on the locking mandrel, a positioning taper sleeve is slidably arranged outside the taper handle, a shaped cutting edge is arranged on the positioning taper sleeve, and a locking groove is formed in the positioning taper sleeve. The taper handle is internally slidably provided with a locking mandrel capable of moving up and down, a plurality of through grooves are formed in the taper handle, a steel ball is arranged in each through groove, a plurality of floating seats corresponding to the steel balls are arranged on the locking mandrel, a positioning taper sleeve is slidably arranged outside the taper handle, a shaped cutting edge is arranged on the positioning taper sleeve, and a locking groove is formed in the positioning taper sleeve. The taper handle is internally slidably provided with a locking mandrel capable of moving up and down, a plurality of through grooves are formed in the taper handle, a steel ball is arranged in each through groove, a plurality of floating seats corresponding to the steel balls are arranged on the locking mandrel, a positioning taper sleeve is slidably arranged outside the taper handle, a shaped cutting edge is arranged on the positioning taper sleeve, and a locking groove is formed in the positioning taper sleeve. The taper handle is internally slidably provided with a locking mandrel capable of moving up and down, a plurality of through grooves are formed in the taper handle, a steel ball is arranged in each through groove, a plurality of floating seats corresponding to the steel balls are arranged on the locking mandrel, a positioning taper sleeve is slidably arranged outside the taper handle, a shaped cutting edge is arranged on the positioning taper sleeve, and a locking groove is formed in the positioning taper sleeve. The taper handle is internally slidably provided with a locking mandrel capable of moving up and down, a plurality of through grooves are formed in the taper handle, a steel ball is arranged in each through groove, a plurality of floating seats corresponding to the steel balls are arranged on the locking mandrel, a positioning taper sleeve is slidably arranged outside the taper handle, a shaped cutting edge is arranged on the positioning taper sleeve, and a locking groove is formed in the positioning taper sleeve. The taper handle is internally slidably provided with a locking mandrel capable of moving up and down, a plurality of through grooves are formed in the taper handle, a steel ball is arranged in each through groove, a plurality of floating seats corresponding to the steel balls are arranged on the locking mandrel, a positioning taper sleeve is slidably arranged outside the taper handle, a shaped cutting edge is arranged on the positioning taper sleeve, and a locking groove is formed in the positioning taper sleeve. The taper handle is internally slidably provided with a locking mandrel capable of moving up and down, a plurality of through grooves are formed in the taper handle, a steel ball is arranged in each through groove, a plurality of floating seats corresponding to the steel balls are arranged on the locking mandrel, a positioning taper sleeve is slidably arranged outside the taper handle, a shaped cutting edge is arranged on the positioning taper sleeve, and a locking groove is formed in the positioning taper sleeve. The taper handle is internally slidably provided with a locking mandrel capable of moving up and down, a plurality of through grooves are formed in the taper handle, a steel ball is arranged in each through groove, a plurality of floating seats corresponding to the steel balls are arranged on the locking mandrel, a positioning taper sleeve is slidably arranged outside the taper handle, a shaped cutting edge is arranged on the positioning taper sleeve, and a locking groove is formed in the positioning taper sleeve. The taper handle is internally slidably provided with a locking mandrel capable of moving up and down, a plurality of through grooves are formed in the taper handle, a steel ball is arranged in each through groove, a plurality of floating seats corresponding to the steel balls are arranged on the locking mandrel, a positioning taper sleeve is slidably arranged outside the taper handle, a shaped cutting edge is arranged on the positioning taper sleeve, and a locking groove is formed in the positioning taper sleeve. The taper handle is internally slidably provided with a locking mandrel capable of moving up and down, a plurality of through grooves are formed in the taper handle, a steel ball is arranged in each through groove, a plurality of floating seats corresponding to the steel balls are arranged on the locking mandrel, a positioning taper sleeve is slidably arranged outside the taper handle, a shaped cutting edge is arranged on the positioning taper sleeve, and a S203, the floating seat extrudes the steel ball with insufficient extrusion force until the extrusion force reaches the set value, and the positioning of the taper sleeve is completed.

9. The vibration suppression method of a tool post for a lathe that facilitates quick tool change according to claim 8, wherein The S3 includes the following steps: S301, if the partial steel ball vibration exceeds the threshold value, that is, the piezoelectric sensor detects that the local steel ball pressure is insufficient, the control system opens the corresponding second electromagnetic valve in proportion; S302, the hydraulic oil in the cavity is shunted to the corresponding cylinder body to balance the pressure of multiple steel balls.

10. The vibration suppression method of a tool post for a lathe that facilitates quick tool change according to claim 9, wherein The S4 includes the following steps: S401, when multiple steel balls exceed the vibration threshold value at the same time, the control system closes the first electromagnetic valve; S402, the hydraulic cylinder drives the piston to lift the locking mandrel, so that the floating seat strengthens the extrusion of the steel ball; S403, after the piezoelectric sensor detects that the vibration is weakened, the piston re-presses the locking mandrel to reduce the extrusion force of the steel ball; S404, the piezoelectric sensor detects the vibration in real time and converts the vibration energy into electrical energy stored in the battery.

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