Positioning device of a swage and swage

Abstract

This invention provides a positioning device for a countersinking machine and a countersinking machine, relating to the field of machining equipment. The positioning device includes: a positioning base plate with mounting holes formed thereon, suitable for mounting on the workpiece machining surface; a positioning clamping sleeve disposed on the positioning base plate with a positioning groove formed thereon; and a positioning block embedded in the positioning groove, suitable for connection to the countersinking machine. The countersinking machine positioning device provided by this invention solves the defect of vibration at the machining end of a countersinking machine during machining in related technologies, achieving positioning of the machining end of the countersinking machine, thereby improving machining accuracy and efficiency.

Description

Technical Field

[0001] This invention relates to the field of machining equipment, and provides a positioning device for a countersinking machine and a countersinking machine. Background Technology

[0002] In machining, countersinking machines are used to perform various processes on workpieces, such as countersinking surfaces, drilling, and deburring. During the machining process, the cutting tool on the countersinking machine rotates at high speed relative to the machining surface. The friction between the cutting tool and the machining surface causes the cutting tool to bear a large radial force, which causes the cutting tool to vibrate. The large machining force also causes the entire countersinking machine to vibrate. The vibration is more severe at the machining end, which seriously affects the machining accuracy and efficiency. Summary of the Invention

[0003] This invention provides a positioning device for a countersinking machine to solve the defect of vibration at the processing end of the countersinking machine during processing in related technologies, thereby achieving positioning of the processing end of the countersinking machine and improving processing accuracy and efficiency.

[0004] A second aspect of the present invention provides a countersinking machine.

[0005] A first aspect of the present invention provides a positioning device for a countersinking machine, comprising:

[0006] A positioning substrate having mounting holes formed thereon, the positioning substrate being adapted to be mounted on a workpiece machining surface;

[0007] A positioning sleeve is disposed on the positioning base plate, and a positioning groove is formed on the positioning sleeve;

[0008] A positioning block, which is embedded in the positioning groove, is adapted to be connected to a countersinking machine.

[0009] According to one embodiment of the present invention, at least three substrate mounting holes are formed on the positioning substrate;

[0010] The positioning sleeve is provided in a one-to-one correspondence with the mounting hole of the substrate, and the central axis of the positioning sleeve coincides with the central axis of the mounting hole of the substrate.

[0011] According to one embodiment of the present invention, at least two positioning grooves are formed on the positioning sleeve;

[0012] At least two of the positioning grooves are evenly spaced on the side wall of the positioning sleeve.

[0013] According to one embodiment of the present invention, the positioning block includes an annular base and wedge-shaped protrusions, the wedge-shaped protrusions being distributed around the annular base;

[0014] The positioning block is fitted onto the countersinking machine through the annular base, and the wedge-shaped protrusion is embedded in the positioning groove.

[0015] According to one embodiment of the present invention, the opening of the positioning groove is formed with a barb structure.

[0016] According to one embodiment of the present invention, a positioning tensioning pin is further included, the positioning tensioning pin being disposed in the substrate mounting hole.

[0017] A second aspect of the present invention provides a countersinking machine, comprising:

[0018] The tool body, the guide positioning sleeve, the countersinking machine body, and the countersinking machine positioning device in any of the embodiments of the first aspect as described above;

[0019] The tool body is mounted on the countersinking machine body, and the guide positioning sleeve is disposed on the end of the countersinking machine body on which the tool body is mounted;

[0020] The guide positioning sleeve is adapted to be connected to the countersink positioning device.

[0021] According to one embodiment of the present invention, the main body of the countersinking machine includes a drive shaft, a tool drawbar, a tool clamp, a locking mechanism, and fasteners;

[0022] The guide positioning sleeve is fitted onto the drive shaft, and a cavity is formed inside the drive shaft;

[0023] The cutter drawbar passes through the tube cavity, and the drive shaft is adapted to drive the cutter drawbar to rotate forward or in reverse.

[0024] The tool holder has a groove for holding the tool body, the tool holder is connected to the first end of the tool pull rod, and the groove wall is radially abutted against the cavity wall of the tube.

[0025] The fastener is connected to the second end of the cutter rod, and the locking mechanism is adapted to abut against the fastener so that the cutter rod can rotate relative to the fastener;

[0026] When the cutter pull rod rotates in the forward direction relative to the fastener, the cutter pull rod moves toward the fastener to cause the clamping groove to contract radially.

[0027] According to one embodiment of the present invention, it further includes a rotary drive motor, a stepper motor, a first drive gear, a second drive gear, a bushing, and a feed rack sleeve;

[0028] The bushing is fitted onto the transmission shaft, the first drive gear is fitted onto the bushing, and the rotary drive motor is adapted to drive the transmission shaft to rotate via the first drive gear;

[0029] The feed rack sleeve is fitted onto the drive shaft, and the stepper motor is adapted to drive the feed rack sleeve to move axially via the second drive gear. The feed rack sleeve is adapted to drive the drive shaft to move axially.

[0030] According to one embodiment of the present invention, the drive shaft is a splined shaft, and a needle roller groove suitable for placing needle rollers is formed on the splined shaft;

[0031] The needle roller contacts the inner wall of the guide positioning sleeve.

[0032] The above-described one or more technical solutions in the embodiments of the present invention have at least one of the following technical effects:

[0033] The countersinking machine positioning device provided in the first aspect of the present invention positions the processing end of the countersinking machine to avoid processing vibration during the countersinking process. Specifically, the countersinking machine positioning device includes a positioning base plate, a positioning sleeve, and a positioning block. The positioning base plate is fixed to the processing surface of the workpiece, the processing end of the countersinking machine is connected to the positioning block, and the positioning block is embedded in the positioning sleeve on the positioning base plate. The positioning sleeve can position the positioning block, and the positioning block can in turn position the processing end of the countersinking machine, limiting the vibration of that part. During the machining process of a countersinking machine, the machining end of the countersinking machine is equipped with a tool body. The tool body generates radial friction and axial thrust forces with the workpiece's machining surface. Since the positioning plate is directly mounted on the workpiece's machining surface, some of these machining forces can be applied to the workpiece body, which can counteract some of the forces. Furthermore, the positioning sleeve firmly holds the machining end of the countersinking machine in a specific machining position, preventing vibration and improving its stability. This effectively improves machining accuracy, increases the workpiece yield, reduces rework and post-processing steps, and increases machining efficiency. In summary, the countersinking machine positioning device provided in this embodiment of the invention can achieve positioning of the countersinking machine's machining end, improving machining accuracy and efficiency.

[0034] According to a second aspect embodiment of the present invention, a countersinking machine positioning device on the countersinking machine can position the processing end, thereby improving the stability of the processing end. Specifically, the processing end is the end of the countersinking machine body on which the tool body is mounted. The processing end is connected to the countersinking machine positioning device through a guide positioning sleeve. The countersinking machine positioning device includes a positioning base plate, a positioning clamp, and a positioning block. The positioning base plate is fixed to the processing surface of the workpiece. The processing end on the countersinking machine is connected to the positioning block. The positioning block is embedded in the positioning clamp on the positioning base plate. The positioning clamp can position the positioning block, and the positioning block can then position the processing end of the countersinking machine, limiting the vibration of its part. During the machining process of a countersinking machine, the machining end of the countersinking machine is equipped with a tool body. The tool body generates radial friction and axial thrust forces with the workpiece's machining surface. Since the positioning plate is directly mounted on the workpiece's machining surface, some of the machining forces can be applied to the workpiece body, which can counteract some of these forces. Furthermore, the positioning sleeve firmly holds the machining end of the countersinking machine in a specific machining position, preventing vibration. The guide positioning sleeve further improves the positioning effect and enhances the stability of the machining end, thereby effectively improving machining accuracy, increasing the workpiece yield, reducing rework and post-processing steps, and increasing machining efficiency. In summary, the countersinking machine provided in this embodiment of the invention has good machining end stability, high machining accuracy, and high machining efficiency. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in this invention or related technologies, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the combined structure of the countersink positioning device and the countersink provided in an embodiment of the present invention;

[0037] Figure 2 This is a schematic diagram of the countersinking machine provided in an embodiment of the present invention. Figure 1 ;

[0038] Figure 3 This is a schematic diagram of the countersinking machine provided in an embodiment of the present invention. Figure 2 ;

[0039] Figure 4 This is an exploded structural diagram of the main body of the countersinking machine provided in an embodiment of the present invention;

[0040] Figure 5 Yes, yes Figure 4 The diagram shows an enlarged view of the structure at point A.

[0041] Figure label:

[0042] 1. Positioning device for countersinking machine;

[0043] 10. Positioning substrate; 101. Substrate mounting hole; 11. Positioning sleeve; 111. Positioning groove; 12. Positioning block;

[0044] 2. Countersinking machine;

[0045] 20. Tool body; 21. Guide positioning sleeve; 221. Drive shaft; 2211. Needle roller; 222. Tool drawbar; 223. Tool collet; 224. Locking mechanism; 2241. Sleeve; 2242. Steel ball; 2243. Electromagnet; 2244. Armature bolt; 225. Fastener; 23. Rotary drive motor; 24. Stepper motor; 25. First drive gear; 26. Second drive gear; 27. Bushing; 28. Feed rack sleeve; 281. Grating ruler; 29. ​​Retracting stop pin. Detailed Implementation

[0046] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0047] like Figures 1 to 3 As shown, a first aspect of the present invention provides a countersinking machine positioning device 1, including a positioning base plate 10, a positioning sleeve 11, and a positioning block 12. A base plate mounting hole 101 is formed on the positioning base plate 10, and the positioning base plate 10 is adapted to be mounted on the workpiece processing surface; the positioning sleeve 11 is disposed on the positioning base plate 10, and a positioning groove 111 is formed on the positioning sleeve 11; the positioning block 12 is embedded in the positioning groove 111, and the positioning block 12 is adapted to be connected to the countersinking machine 2.

[0048] The positioning base plate 10 is typically a metal plate, possessing high strength and rigidity, capable of withstanding significant impact without deformation. Before countersinking, the positioning base plate 10 is mounted on the workpiece's machining surface, with fasteners 225 positioned in the mounting holes 101. A positioning sleeve 11 is mounted on the positioning base plate 10. The positioning sleeve 11 is typically cylindrical to better match the machining end of the countersinking machine 2. The positioning sleeve 11 can also be made of metal. The positioning sleeve 11 can be detachably connected to the positioning base plate 10 for easy maintenance or replacement with different models; this detachable connection can be achieved using bolts. Alternatively, the positioning sleeve 11 can be non-detachably connected to the positioning base plate 10 to enhance its fixing strength; this non-detachable connection can be achieved using welding. The positioning base plate 10 has clearance holes at the locations where the positioning sleeves 11 are mounted, allowing the machining end of the countersinking machine 2 to pass through. Multiple positioning sleeves 11 can be mounted on the same positioning base plate 10.

[0049] According to a first aspect embodiment of the present invention, a countersinking machine positioning device 1 positions the processing end of a countersinking machine 2 to avoid processing vibration during the processing of the countersinking machine 2. Specifically, the countersinking machine positioning device 1 includes a positioning base plate 10, a positioning sleeve 11, and a positioning block 12. The positioning base plate 10 is fixed to the processing surface of the workpiece, the processing end of the countersinking machine 2 is connected to the positioning block 12, and the positioning block 12 is embedded in the positioning sleeve 11 on the positioning base plate 10. The positioning sleeve 11 can position the positioning block 12, and the positioning block 12 can in turn position the processing end of the countersinking machine 2, limiting the vibration of its part. During the machining process of the countersinking machine 2, the machining end of the countersinking machine 2 is equipped with a tool body 20. The tool body 20 generates radial friction and axial thrust forces with the machining surface of the workpiece. Since the positioning base plate 10 is directly mounted on the machining surface of the workpiece, some of the machining forces can be applied to the workpiece body, which can offset some of the machining forces. Furthermore, under the positioning action of the positioning sleeve 11, the machining end of the countersinking machine 2 can be firmly fixed in a specific machining position, preventing vibration and improving the stability of the machining end. This effectively improves machining accuracy, increases the yield of machined parts, reduces rework and post-processing steps, and also improves machining efficiency. In summary, the countersinking machine positioning device 1 provided in this embodiment of the invention can achieve positioning of the machining end of the countersinking machine 2, improving machining accuracy and efficiency.

[0050] Furthermore, since the workpiece body can offset part of the processing force, the output torque of the countersink 2 at the processing end can reach 200 N / m, which is suitable for high torque output. At the same time, due to the positioning function of the countersink positioning device 1, the countersink body can be placed on a mobile and liftable trolley without the need for an additional fixed workbench, which facilitates the flexible movement of the countersink 2. It is particularly suitable for processing large workpieces and processing in places where it is inconvenient to move the workpiece, making the application scenarios of the countersink 2 more extensive.

[0051] like Figure 1As shown, in an embodiment of the present invention, at least three substrate mounting holes 101 are formed on the positioning substrate 10; positioning sleeves 11 are provided in a one-to-one correspondence with the substrate mounting holes 101, and the central axis of the positioning sleeves 11 coincides with the central axis of the substrate mounting holes 101. The positioning sleeves 11 are positioned at the locations of the substrate mounting holes 101, so that one of the substrate mounting holes 101 can be selected as the positioning position of the countersinking machine 2, with the processing end of the countersinking machine 2 passing through this substrate mounting hole 101. Fasteners 225 are installed in the other substrate mounting holes 101 for fixing. Any one of the substrate mounting holes 101 can serve as a clearance hole for the processing end of the countersinking machine 2, thus avoiding repeated drilling on the positioning substrate 10 and reducing the processing steps of the positioning substrate 10. Furthermore, providing at least three substrate mounting holes 101 ensures that at least two of the substrate mounting holes 101 provide a fixing function, and these two fixing points can limit the positioning substrate 10, preventing it from rotating.

[0052] like Figure 1 As shown, in an embodiment of the present invention, at least two positioning grooves 111 are formed on the positioning sleeve 11; the at least two positioning grooves 111 are evenly spaced on the side wall of the positioning sleeve 11. Multiple positioning grooves 111 are distributed around the side wall of the positioning sleeve 11, and correspondingly, positioning blocks 12 are also embedded around the positioning sleeve 11, providing a greater number of effective positioning points for the countersinking machine 2, forming a multi-directional, 360-degree surrounding positioning, thus fully ensuring the positioning effect.

[0053] like Figures 1 to 2 As shown, in an embodiment of the present invention, the positioning block 12 includes an annular base and wedge-shaped protrusions, with the wedge-shaped protrusions distributed around the annular base. The positioning block 12 is fitted onto the countersinking machine 2 through the annular base, and the wedge-shaped protrusions are embedded in the positioning groove 111. The processing end of the countersinking machine 2 is usually cylindrical, therefore, the annular base can be well matched to the processing end of the countersinking machine 2. The wedge-shaped protrusions have a stepped surface, which is embedded in the positioning groove 111, which can increase the fitting force to a certain extent and reduce the risk of the positioning block 12 coming out of the positioning groove 111.

[0054] like Figure 1As shown, in an embodiment of the present invention, the opening of the positioning groove 111 forms a barb structure. The barb structure can limit the positioning block 12, preventing the positioning block 12 from slipping out of the opening of the positioning groove 111. The entire positioning groove 111 forms an L-shaped channel, specifically divided into an inlet channel for the positioning block 12 and an engagement channel for the positioning block 12. The positioning block 12 first enters the positioning groove 111 through the inlet channel, and then rotates the positioning block 12 at a certain angle to engage it in the engagement channel. This effectively avoids the risk of the positioning block 12 directly detaching from the positioning groove 111. Furthermore, when releasing the positioning of the countersink 2, it is only necessary to rotate the positioning block 12 in the opposite direction and then remove it from the inlet channel in the opposite direction, so as to position the countersink 2 into the next positioning sleeve 11. In an embodiment of the present invention, switching the positioning position can be completed in as little as 5 seconds.

[0055] In an embodiment of the present invention, the countersinking machine positioning device 1 further includes a positioning tensioning pin, which is disposed in the substrate mounting hole 101. The positioning tensioning pin has a good fixing effect and can quickly reach and quickly release the tensioned state, thus greatly improving the installation efficiency of the positioning substrate 10.

[0056] like Figures 1 to 5 As shown, a second aspect embodiment of the present invention provides a countersinking machine 2, including a tool body 20, a guide positioning sleeve 21, a countersinking machine body, and a countersinking machine positioning device 1 as described in any of the first aspects embodiments; the tool body 20 is installed on the countersinking machine body, and the guide positioning sleeve 21 is disposed on one end of the countersinking machine body on which the tool body 20 is installed; the guide positioning sleeve 21 is adapted to be connected to the countersinking machine positioning device 1.

[0057] The tool body 20 may include drill bits, countersinking cutters, boring tools, etc. The guide positioning sleeve 21 is sleeved on the machining end of the countersinking machine 2. The machining end is the end that holds the tool body 20. The guide positioning sleeve 21 can be connected to the positioning block 12 in the positioning device 1 of the countersinking machine. The guide positioning sleeve 21 can be made of metal or alloy, etc.

[0058] According to a second aspect embodiment of the present invention, the countersinking machine 2 has a countersinking machine positioning device 1 that can position the processing end, thereby improving the stability of the processing end. Specifically, the processing end is the end of the countersinking machine body on which the tool body 20 is mounted. The processing end is connected to the countersinking machine positioning device 1 through a guide positioning sleeve 21. The countersinking machine positioning device 1 includes a positioning base plate 10, a positioning clamp 11, and a positioning block 12. The positioning base plate 10 is fixed to the processing surface of the workpiece. The processing end of the countersinking machine 2 is connected to the positioning block 12. The positioning block 12 is embedded in the positioning clamp 11 on the positioning base plate 10. The positioning clamp 11 can position the positioning block 12, and the positioning block 12 can then position the processing end of the countersinking machine 2, limiting the vibration of its part. During the machining process, the countersinking machine 2 has a tool body 20 at its machining end. The tool body 20 generates radial friction and axial thrust forces with the workpiece's machining surface. Since the positioning base plate 10 is directly mounted on the workpiece's machining surface, some of the machining forces can be applied to the workpiece body, which can counteract some of the forces. Furthermore, the positioning sleeve 11 firmly holds the machining end of the countersinking machine 2 in a specific machining position, preventing vibration. The guide positioning sleeve 21 further improves the positioning effect and enhances the stability of the machining end, thereby effectively improving machining accuracy, increasing the workpiece yield, reducing rework and post-processing steps, and increasing machining efficiency. In summary, the countersinking machine 2 provided in this embodiment of the invention has good machining end stability, high machining accuracy, and high machining efficiency.

[0059] like Figure 1 and Figure 4 , Figure 5As shown, in an embodiment of the present invention, the countersinking machine body includes a drive shaft 221, a tool pull rod 222, a tool clamping sleeve 223, a locking mechanism 224, and a fastener 225; a guide positioning sleeve 21 is sleeved on the drive shaft 221, and a cavity is formed inside the drive shaft 221; the tool pull rod 222 passes through the cavity, and the drive shaft 221 is adapted to drive the tool pull rod 222 to rotate in the forward or reverse direction; a clamping groove for clamping the tool body 20 is formed inside the tool clamping sleeve 223, and the tool clamping sleeve 223 is connected to the first end of the tool pull rod 222, with the groove wall radially abutting against the cavity wall; the fastener 225 is connected to the second end of the tool pull rod 222, and the locking mechanism 224 is adapted to abut against the fastener 225 to make the tool pull rod 222 rotate relative to the fastener 225; wherein, when the tool pull rod 222 rotates in the forward direction relative to the fastener 225, the tool pull rod 222 moves toward the fastener 225 to make the clamping groove radially contract. The countersinking machine 2 provided in this embodiment of the invention uses a guide positioning sleeve 21 to support and guide the transmission shaft 221, so that the radial force borne by the transmission shaft 221 mainly acts on the guide positioning sleeve 21. Therefore, the diameter of the transmission can be reduced, the volume of the countersinking machine 2 can be greatly reduced, and the transmission shaft 221 can bear the radial force to a greater extent without producing machining vibration, eliminating machining marks. Specifically, the surface finish can reach Ra0.2. It can also reduce the length of the tool drawbar 222, and the tool body 20 rotates around the spindle center, so that the cutting stability is good, the machining accuracy is high, and the machining flatness can reach 0.001mm.

[0060] Furthermore, the countersinking machine 2 provided in this embodiment of the invention can automatically clamp the tool body 20. Specifically, in conjunction with the above structure, the main body of the countersinking machine includes a drive shaft 221, a tool pull rod 222, a tool clamping sleeve 223, a locking mechanism 224, and fasteners 225. The tool body 20 can be clamped in the clamping groove of the tool clamping sleeve 223. The clamping groove can radially retract to clamp the tool body 20. The tool clamping sleeve 223 is connected to the first end of the tool pull rod 222. When the tool pull rod 222 rotates forward under the drive of the drive shaft 221, it synchronously drives the tool clamping sleeve 223 and the tool body 20 to rotate forward. Since the fasteners 225 are connected to the second end of the tool pull rod 222, the tool pull... When rod 222 rotates in the forward direction, it also drives fastener 225 to rotate in the forward direction. Furthermore, after locking mechanism 224 abuts against fastener 225, fastener 225 stops rotating. At this time, tool pull rod 222 rotates relative to fastener 225, and tool pull rod 222 can move toward fastener 225. This further drives tool body 20 and tool clamp 223 to move toward fastener 225 in a synchronized manner. Since drive shaft 221 does not move, tool clamp 223 is equivalent to moving into the cavity of drive shaft 221. The cavity wall can radially compress the groove wall of tool clamp 223, causing the groove to contract radially, thereby clamping tool body 20. The aforementioned forward rotation is determined based on whether the tool drawbar 222 moves toward the fastener 225. For example, if the tool drawbar 222 rotates clockwise relative to the fastener 225, the fastener 225 can exert a pulling force on the tool drawbar 222 to make it move toward the fastener 225, then this clockwise rotation can be defined as forward rotation. Similarly, if the tool drawbar 222 rotates counterclockwise relative to the fastener 225, the fastener 225 can exert a pulling force on the tool drawbar 222 to make it move toward the fastener 225, then this counterclockwise rotation can be defined as forward rotation. Therefore, the countersinking machine 2 provided in this embodiment of the invention does not require external power media such as hydraulic systems or compressed air to clamp the tool, has a small structure, and can achieve quick and convenient clamping of the tool body 20, improving clamping efficiency.

[0061] like Figure 4 and Figure 5As shown, the locking mechanism 224 includes a sleeve 2241, a steel ball 2242, an electromagnet 2243, and an armature bolt 2244. The first end of the sleeve 2241 is sleeved on the fastener 225, and the steel ball 2242 is embedded in the gap between the sleeve 2241 and the fastener 225. When the sleeve 2241 moves toward the tool drawbar 222, it radially compresses the steel ball 2242 so that the steel ball 2242 abuts against the fastener 225. The electromagnet 2243 is disposed inside the sleeve 2241, and part of the armature bolt 2244 passes through the second end of the sleeve 2241. The electromagnet 2243 is adapted to drive the armature bolt 2244 to move toward the electromagnet 2243 after being energized. One end of the armature bolt 2244 exposed outside the sleeve 2241 abuts against the second end of the sleeve 2241 to drive the sleeve 2241 to move toward the tool drawbar 222. The locking mechanism 224 uses electromagnetic transmission to drive the sleeve 2241 to move in order to lock the fastener 225. Specifically, in the initial state, the tool pull rod 222, the tool body 20, the fastener 225, and the drive shaft 221 rotate synchronously. When it is necessary to lock the tool body 20, the solenoid 2243 is energized to make it magnetic. The armature bolt 2244 is attracted by the magnet and moves toward the solenoid 2243 and comes into contact with it. During this process... The armature bolt 2244 can abut against the second end of the sleeve 2241, thereby applying a driving force to the sleeve 2241. Under the action of the driving force, the sleeve 2241 moves toward the direction of the cutter pull rod 222. At this time, the space between the sleeve 2241 and the fastener 225 where the steel ball 2242 is placed becomes smaller, so the steel ball 2242 can be squeezed. The steel ball 2242 further squeezes the fastener 225, thereby stopping the fastener 225 from rotating and achieving the locking of the fastener 225.

[0062] like Figure 1 , Figure 4 and Figure 5 As shown, in an embodiment of the present invention, the locking mechanism 224 further includes a retraction stop pin 29, which is disposed on the side of the fastener 225 facing the sleeve 2241.

[0063] The countersinking machine 2 provided in this embodiment of the invention achieves tool retraction by means of a tool retraction stop pin 29. Specifically, during tool retraction, the drive shaft 221 drives the tool pull rod 222 to rotate in the opposite direction. When the tool pull rod 222 rotates in the opposite direction, it also synchronously drives the fastener 225 to rotate in the opposite direction. Further, referring to the locking process of the aforementioned locking mechanism 224 on the fastener 225, the locking mechanism 224 is pressed against the fastener 225, and the fastener 225 stops rotating. At this time, the tool pull rod 222 rotates in the opposite direction relative to the fastener 225, and a force is generated between the tool pull rod 222 and the fastener 225 to move away from each other. The tool retraction stop pin 29 can abut against the fastener 225. Fastener 225 restricts the movement of fastener 225. At this time, the tool pull rod 222 can only move away from the fastener 225, and further synchronously drive the tool body 20 and the tool collet 223 to move away from the fastener 225. Since the drive shaft 221 does not move, the tool collet 223 is equivalent to being dislodged from the cavity of the drive shaft 221. The radial compression effect of the cavity wall on the groove wall of the tool collet 223 becomes smaller and smaller, and the groove expands radially, thereby releasing the locking of the tool body 20 and completing the tool retraction.

[0064] like Figures 1 to 3 As shown, in an embodiment of the present invention, the countersinking machine 2 further includes a rotary drive motor 23, a stepper motor 24, a first drive gear 25, a second drive gear 26, a bushing 27, and a feed rack sleeve 28; the bushing 27 is sleeved on the transmission shaft 221, the first drive gear 25 is sleeved on the bushing 27, and the rotary drive motor 23 is adapted to drive the transmission shaft 221 to rotate through the first drive gear 25; the feed rack sleeve 28 is sleeved on the transmission shaft 221, and the stepper motor 24 is adapted to drive the feed rack sleeve 28 to move axially through the second drive gear 26, and the feed rack sleeve 28 is adapted to drive the transmission shaft 221 to move axially. The above structure constitutes the transmission mechanism of the countersinking machine 2. The rotary drive motor 23 drives the transmission shaft 221 to rotate, which in turn drives the tool drawbar 222 to rotate. The tool drawbar 222 can drive the tool body 20 to rotate for drilling and countersinking. The stepper motor 24 is the drive device that drives the transmission shaft 221 to move along its axial direction. The transmission shaft 221 further drives the tool body 20 on the tool drawbar 222 to reciprocate relative to the machining surface, so that holes or stepped surfaces of different depths can be machined. Using the bushing 27 to drive the transmission shaft 221 has the advantages of a large contact area and low pressure per unit area, enabling the transmission of larger torque and reducing the wear of the transmission shaft 221. Both the rotary drive motor 23 and the stepper motor 24 can be controlled by a PLC.

[0065] like Figure 3As shown, in an embodiment of the present invention, the transmission shaft 221 is a splined shaft, and a needle roller groove suitable for placing the needle roller 2211 is formed on the splined shaft; the needle roller 2211 contacts the inner wall of the guide positioning sleeve 21. The transmission efficiency of the splined shaft is higher than that of a regular keyed shaft because the spline fit is more precise and stable, the transmitted torque is more uniform, and the loss of transmission efficiency is reduced. The transmission method of the splined shaft relies on the interlocking spline connection, which has a higher interlocking effect than that of the keyed shaft, the transmitted force is more stable, and it can effectively prevent transmission slippage and other faults, thereby improving reliability. The splined shaft can withstand certain lateral and axial loads, ensuring transmission safety. The needle roller 2211 is installed in the needle roller groove at the front end of the splined shaft, and the needle roller 2211 contacts the inner wall of the guide positioning sleeve 21, forming a special structure in which circumferential rotation and axial feed motion can be performed simultaneously.

[0066] In addition, in the embodiments of the present invention, the models of the tool body 20 and the tool drawbar 222 are interchangeable, which can meet the requirements of planar countersinking of various hole diameters. The maximum countersinking radius is 30mm, the rotation speed is 50-500r / min, the speed is adjustable, and the power is about 2KW. Automatic feeding is adopted, and the feed rate is steplessly adjustable with a speed range of 0-50mm / min. It can also be equipped with a display to show different working statuses and countersinking feed rates. A grating ruler 281 can be installed on the countersinking machine body to display the feed distance on the touch screen.

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A countersinking machine (2), characterized in that, include: Tool body (20), drive shaft (221), guide positioning sleeve (21), countersinking machine body and countersinking machine positioning device (1); The countersinking machine positioning device (1) includes: A positioning substrate (10) is provided, wherein a substrate mounting hole (101) is formed on the positioning substrate (10), and the positioning substrate (10) is adapted to be mounted on the workpiece processing surface; Positioning sleeve (11), the positioning sleeve (11) is disposed on the positioning base plate (10), and a positioning groove (111) is formed on the positioning sleeve (11). Positioning block (12), the positioning block (12) is embedded in the positioning groove (111), the positioning block (12) is adapted to be connected to the countersinking machine (2); The positioning groove (111) has a barb structure at the opening, and the positioning block (12) is inserted into the positioning groove (111) by rotation. The tool body (20) is installed on the countersinking machine body, and the guide positioning sleeve (21) is sleeved on the drive shaft (221). The drive shaft (221) is a spline shaft, and a needle roller groove suitable for placing the needle roller (2211) is formed on the spline shaft. The needle roller (2211) is in contact with the inner wall of the guide positioning sleeve (21). The guide positioning sleeve (21) is adapted to be connected to the countersink positioning device (1).

2. The countersinking machine (2) according to claim 1, characterized in that, The main body of the countersinking machine includes a tool pull rod (222), a tool clamp (223), a locking mechanism (224), and fasteners (225). A cavity is formed inside the drive shaft (221); The cutter pull rod (222) passes through the cavity, and the drive shaft (221) is adapted to drive the cutter pull rod (222) to rotate in the forward or reverse direction; The tool holder (223) forms a clamping groove for clamping the tool body (20). The tool holder (223) is connected to the first end of the tool pull rod (222). The groove wall of the clamping groove abuts radially against the cavity wall of the tube. The fastener (225) is connected to the second end of the cutter pull rod (222), and the locking mechanism (224) is adapted to abut against the fastener (225) so that the cutter pull rod (222) rotates relative to the fastener (225); When the cutter pull rod (222) rotates in the forward direction relative to the fastener (225), the cutter pull rod (222) moves toward the fastener (225) to cause the clamping groove to shrink radially.

3. The countersinking machine (2) according to claim 2, characterized in that, It also includes a rotary drive motor (23), a stepper motor (24), a first drive gear (25), a second drive gear (26), a bushing (27), and a feed rack sleeve (28); The bushing (27) is sleeved on the transmission shaft (221), the first drive gear (25) is sleeved on the bushing (27), and the rotary drive motor (23) is adapted to drive the transmission shaft (221) to rotate through the first drive gear (25); The feed rack sleeve (28) is sleeved on the transmission shaft (221). The stepper motor (24) is adapted to drive the feed rack sleeve (28) to move axially through the second drive gear (26). The feed rack sleeve (28) is adapted to drive the transmission shaft (221) to move axially.

4. The countersinking machine (2) according to claim 1, characterized in that, At least three mounting holes (101) are formed on the positioning substrate (10). The positioning sleeve (11) is provided in a one-to-one correspondence with the substrate mounting hole (101), and the central axis of the positioning sleeve (11) coincides with the central axis of the substrate mounting hole (101).

5. The countersinking machine (2) according to claim 1, characterized in that, At least two positioning grooves (111) are formed on the positioning sleeve (11). At least two of the positioning grooves (111) are evenly spaced on the side wall of the positioning sleeve (11).

6. The countersinking machine (2) according to claim 5, characterized in that, The positioning block (12) includes an annular base and wedge-shaped protrusions, with the wedge-shaped protrusions distributed around the annular base; The positioning block (12) is sleeved on the countersinking machine (2) through the annular base, and the wedge-shaped protrusion is embedded in the positioning groove (111).

7. The countersinking machine (2) according to claim 1, characterized in that, It also includes a positioning tensioning pin, which is disposed in the substrate mounting hole (101).

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