A method for repeated machining of a tool to find points

Abstract

The present invention discloses a method for repeated machining of tool point finding, including: S100, the loading and unloading unit clamps the tool to be repeatedly machined on the loading tray and inserts it into the rotating chuck at the first station; S200, the backlight source and the side light source are turned on, the short tube camera takes an image of the tool, and the vision module calculates the length dimension and the helix angle data of the tool and transmits them to the CNC system; S300, the annular light source is turned on, the reflecting prism reflects the annular light source to the end face of the tool, the long tube camera takes an image of the end face of the tool, and the vision module calculates the end face diameter dimension data of the tool and transmits it to the CNC system; S400, the rotating table rotates to drive the tool to rotate to the second station for fishtail grinding; S500, the rotating table rotates to drive the tool to rotate to the third station for left helical groove machining; S600, the rotating table rotates to drive the tool to rotate to the fourth station for right helical groove machining. The present invention enables the tool to be repeatedly machined multiple times, with lower cost.

Description

Technical Field

[0001] The present invention relates to the technical field of tool reprocessing, and particularly relates to a method for reprocessing a tool by finding points. Background Art

[0002] The milling cutter used for PCB (printed circuit board) is also called a router, which is used in the post-process of PCB (or when milling the outer frame after lamination). The main purpose is to process the fabricated circuit board with this tool. There are many crucial processes in the processing of PCB milling cutters, including two processes of step grinding and fishtail grinding. Step grinding is to grind the bar stock to be processed into the required outer diameter and length, and fishtail grinding is to grind a shape similar to the tail of a fish at the front end of the milling cutter.

[0003] In the prior art, when reprocessing a router from large to small, it is necessary to completely remove the original step first, that is, to completely remove the spiral groove of the old router bar stock to form a cylindrical bar stock, and then re-grind the spiral groove to obtain a new router with a smaller diameter. This processing method can only perform secondary processing on the tool, and cannot perform repeated processing more than twice. Moreover, the diameter size of the reprocessed router is small, resulting in serious material waste and high processing costs. Summary of the Invention

[0004] The present invention aims to provide a method for reprocessing a tool by finding points to solve the above-mentioned existing technical problems.

[0005] To achieve the above object, the technical solution of the present invention is: a method for reprocessing a tool by finding points, comprising the following steps:

[0006] S100. The loading and unloading unit clamps the tool to be reprocessed on the loading tray and inserts it into the rotating shaft chuck at the first station;

[0007] S200. The backlight source and the side light source are turned on, the short tube camera takes an image of the tool, the vision module calculates the length dimension and the spiral angle data of the tool and transmits them to the CNC system, and then the backlight source and the side light source are turned off;

[0008] S300. The annular light source is turned on, the reflecting prism extends to reflect the annular light source to the end face of the tool, the long tube camera takes an image of the end face of the tool, the vision module calculates the end face diameter dimension data of the tool and transmits them to the CNC system, and then the annular light source is turned off;

[0009] S400. The rotating table rotates to drive the tool to rotate to the second station, and the fishtail unit at the second station performs fishtail grinding on the tool;

[0010] S500. The rotating table rotates to drive the tool to rotate to the third station, and the left-handed processing unit at the third station performs left-handed spiral groove processing on the tool;

[0011] In S600, the rotary table rotates to drive the tool to rotate to the fourth station, and the right-handed machining unit at the fourth station machines the right helical groove of the tool, thereby obtaining a new tool.

[0012] In S700, the rotary table rotates to drive the new tool to rotate to the first station, and the loading and unloading unit clamps out the new tool at the first station and places it into the unloading tray.

[0013] Preferably, it further includes a workbench. A circular mounting table is provided in the middle of the workbench. The rotary table is arranged on the mounting table. The first, second, third, and fourth stations are sequentially arranged along the circumferential direction on the workbench. The loading and unloading unit, the fish-tail unit, the left-handed machining unit, and the right-handed machining unit are respectively arranged at the first, second, third, and fourth stations. There are four shaft chucks arranged circumferentially on the rotary table, and the four shaft chucks respectively correspond to the first, second, third, and fourth stations. The rotary table is drivingly connected with a driving member for driving the rotary table to lift and rotate. A vertical stand is arranged at the first station, and a backlight source, a side light source, an annular light source, a short-tube camera, a long-tube camera, and a reflecting prism are installed on the vertical stand.

[0014] Preferably, the short-tube camera and the long-tube camera are arranged above the shaft chuck at the first station, the side light source and the annular light source are arranged on the left side of the shaft chuck at the first station, and the backlight source is arranged below the shaft chuck at the first station.

[0015] Preferably, the front-back direction of the workbench is the Y-axis direction, the left-right direction is the X-axis direction, and the up-down direction is the Z-axis direction. The loading and unloading unit includes a Y-axis driving module capable of reciprocating along the Y-axis direction, and a detection mechanism and a rotating mechanism arranged on the Y-axis driving module. A pushing mechanism is arranged on the rotating mechanism, and a clamping jaw mechanism is arranged on the pushing mechanism.

[0016] Preferably, an XY-axis driving assembly is arranged at the second station, which includes a first Y-axis driving mechanism and a first X-axis driving mechanism. The fish-tail unit is arranged on the XY-axis driving assembly, and the first Y-axis driving mechanism and the first X-axis driving mechanism are respectively used to drive the fish-tail unit to move along the Y-axis and X-axis directions.

[0017] Preferably, a conveying mechanism capable of reciprocating along the X-axis direction is arranged below the loading and unloading unit, and the loading tray and the unloading tray are arranged on the conveying mechanism.

[0018] Preferably, the fish-tail unit includes a fish-tail electric spindle and a fish-tail grinding wheel connected to the fish-tail electric spindle.

[0019] Preferably, the left-handed machining unit includes a first electric spindle disposed on the workbench. A first grinding wheel is connected to the output end of the first electric spindle. The first grinding wheel is used for machining a left-handed spiral groove on the tool held by the spindle chuck at the third station; the right-handed machining unit includes a second electric spindle disposed on the workbench. A second grinding wheel is connected to the output end of the second electric spindle. The second grinding wheel is used for machining a right-handed spiral groove on the tool held by the spindle chuck at the fourth station.

[0020] Preferably, an outer cover of the machine is further provided outside the workbench. A display control console is rotatably provided on one side of the outer cover of the machine.

[0021] Preferably, a feeding cylinder and a ejecting cylinder are provided below the spindle chuck corresponding to the first station on the mounting table. The feeding cylinder is used for clamping and positioning the tool held by the spindle chuck at the first station, and the ejecting cylinder is used for releasing the clamping limit of the tool by the spindle chuck at the first station.

[0022] The present invention has the following beneficial effects:

[0023] (1) When the tool finding and repeated machining method of the present invention performs secondary machining on a milling cutter to change its size from large to small, it is not necessary to completely remove the original step difference, that is, it is not necessary to first completely remove the spiral groove of the old milling cutter rod to form a cylindrical rod. Instead, the process of creating the step difference is removed, and the fish tail and spiral groove grinding machining is directly performed on the basis of the original old milling cutter, so as to obtain a new milling cutter. This machining method enables the tool to be repeatedly machined more than twice, saves tool materials, and thus reduces the machining cost.

[0024] (2) The rotary structural layout enables the four stations to perform their respective machining operations simultaneously without mutual interference, and the loading and unloading station is separated from other machining stations, which can effectively prevent the oil mist from splashing randomly during cutting machining. The machining process is simple, the machining time is short, the working efficiency is high, the grinding quality is good, and the equipment occupies a small area and does not require many operators, saving labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic external view of an embodiment of the present invention;

[0026] Figure 2 is an enlarged schematic view of the first station of an embodiment of the present invention;

[0027] Figure 3 is a right-side view of the internal structure of an embodiment of the present invention;

[0028] Figure 4 is a top view of the internal structure of an embodiment of the present invention;

[0029] Figure 5 is an internal schematic view of an embodiment of the present invention after removing the vertical stand;

[0030] Figure 6 is a schematic structural view of the loading and unloading unit according to an embodiment of the present invention;

[0031] Figure 7 is an assembly schematic view at the vertical stand according to an embodiment of the present invention;

[0032] Figure 8 is a schematic structural view of the support mechanism according to an embodiment of the present invention.

[0033] Reference numerals in the drawings: 1 workbench, 2 mounting table, 3 material guiding cylinder, 4 ejecting cylinder, 5 rotating table, 6 shaft chuck, 7 driving member, 8 Y-axis driving module, 9 detection mechanism, 10 rotating mechanism, 11 pushing mechanism, 12 jaw mechanism, 13 reflecting prism, 14 fish tail unit, 141 fish tail electric spindle, 142 fish tail grinding wheel, 15 first electric spindle, 16 first grinding wheel, 17 second electric spindle, 18 second grinding wheel, 19 first Y-axis driving mechanism, 20 first X-axis driving mechanism, 21 second Y-axis driving mechanism, 22 first Z-axis adjusting mechanism, 23 first offset swing plate, 24 second X-axis driving mechanism, 25 second Z-axis adjusting mechanism, 26 second offset swing plate, 27 support mechanism, 271 fixing member, 272 pressing plate, 273 driving cylinder, 28 conveying mechanism, 29 loading tray, 30 unloading tray, 31 long barrel camera, 32 machine outer cover, 33 display console, 34 power distribution cabinet, 35 annular light source, 36 back light source, 37 side light source, 38 short barrel camera, 39 first cylinder, 40 second cylinder, 41 vision module. Detailed embodiments

[0034] To further illustrate the embodiments, the present invention provides drawings. These drawings are part of the disclosure of the present invention, which are mainly used to illustrate the embodiments and can be used to explain the operating principle of the embodiments in conjunction with the relevant descriptions in the specification. With reference to these contents, those of ordinary skill in the art should be able to understand other possible embodiments and the advantages of the present invention. The components in the drawings are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0035] Refer to Figure 1-8 As shown, as an embodiment of the present invention, a tool point finding and repeated machining method is provided, including the following steps:

[0036] S100. The loading and unloading unit clamps the tool to be repeatedly machined on the loading tray 29 and inserts it onto the shaft chuck 6 at the first station;

[0037] S200. The back light source 36 and the side light source 37 are turned on, the short barrel camera 38 takes an image of the tool, the vision module 41 calculates the length dimension and the spiral angle data of the tool and transmits them to the CNC system, and then the back light source 36 and the side light source 37 are turned off;

[0038] The S300 and the annular light source 35 are turned on. The reflecting prism 13 extends to reflect the annular light source 35 to the end face of the tool. The long-barrel camera 31 takes a picture of the end face of the tool. The vision module 41 calculates the data of the end face diameter size of the tool and transmits it to the CNC system. Then the annular light source 35 is turned off;

[0039] In S400, the rotating table 5 rotates to drive the tool to rotate to the second station, and the fish-tail unit 14 at the second station grinds the fish-tail of the tool;

[0040] In S500, the rotating table 5 rotates to drive the tool to rotate to the third station, and the left-handed machining unit at the third station machines the left-handed spiral groove of the tool;

[0041] In S600, the rotating table 5 rotates to drive the tool to rotate to the fourth station, and the right-handed machining unit at the fourth station machines the right-handed spiral groove of the tool, thereby obtaining a new tool;

[0042] In S700, the rotating table 5 rotates to drive the new tool to rotate to the first station, and the loading and unloading unit clamps out the new tool at the first station and places it in the unloading tray 30.

[0043] When the tool finding and repetitive machining method of the present invention is used for the secondary machining of changing a large milling cutter into a small one, it is not necessary to completely remove the original step difference, that is, it is not necessary to first completely remove the spiral groove of the old milling cutter bar stock to form a cylindrical bar stock. Instead, the process of removing the step difference is removed. By combining the short-barrel camera 38 and the long-barrel camera 31 to cooperate in taking pictures for finding points and positioning, the subsequent stations directly perform fish-tail and spiral groove grinding machining on the basis of the original old milling cutter, thereby obtaining a new milling cutter. This machining method enables the tool to perform repetitive machining more than twice, saves tool materials, and thus reduces the machining cost.

[0044] In this embodiment, it further includes a workbench 1. A circular mounting table 2 is provided in the middle of the workbench 1. A rotating table 5 is arranged on the mounting table 2. The first, second, third, and fourth stations are sequentially arranged along the circumferential direction on the workbench 1. The loading and unloading unit, the fish tail unit 14, the left-handed machining unit, and the right-handed machining unit are respectively arranged at the first, second, third, and fourth stations. There are four shaft chucks 6 arranged circumferentially on the rotating table 5, and the four shaft chucks 6 respectively correspond to the first, second, third, and fourth stations. The cutting tools on the four shaft chucks 6 perform machining at the four stations simultaneously. The rotating table 5 is drivingly connected to a driving member 7 for driving the rotating table 5 to lift and rotate. The rotating structural layout enables the four stations to perform their respective machining operations simultaneously without interference. Moreover, the loading and unloading station is separated from other machining stations, which can effectively prevent oil mist from splashing randomly during cutting machining. The machining process is simple, the machining time is short, the work efficiency is high, the grinding quality is good, and the equipment occupies a small area and does not require many operators, saving labor costs. A vertical stand is arranged at the first station. A backlight source 36, a side light source 37, an annular light source 35, a short tube camera 38, a long tube camera 31, and a reflection prism 13 are installed on the vertical stand. The short tube camera 38 and the long tube camera 31 are arranged above the shaft chuck 6 at the first station. The side light source 37 and the annular light source 35 are arranged on the left side of the shaft chuck 6 at the first station. The backlight source 36 is arranged below the shaft chuck 6 at the first station. Among them, the annular light source 35 is connected to a first air cylinder 39, the reflection prism 13 is at 45°, and the reflection prism 13 is connected to a second air cylinder 40.

[0045] In this embodiment, the bottom of the workbench 1 is a casting base, ensuring high overall machining stability and good vibration absorption ability. An outer machine cover 32 is also arranged outside the workbench 1. A display control console 33 is rotatably arranged on one side of the outer machine cover 32, facilitating the detection and operation of each station. A power distribution cabinet 34 is arranged on the other side. Each line is equipped with a standard number tube, which is beautiful and convenient for maintenance. The vision module 41 is located above the display control console 33. The outer machine cover 32 is configured with 4 sheet metal doors composed of 2 double-opening ones. The middle of the sheet metal is hollowed out and the doors and windows are transparent for convenient observation of the machining status. The power distribution cabinet 34 is isolated from the inside of the workbench 1 to prevent oil mist from entering and causing safety accidents.

[0046] In this embodiment, the front-back direction of the workbench 1 is the Y-axis direction, the left-right direction is the X-axis direction, and the up-down direction is the Z-axis direction. The loading and unloading unit includes a Y-axis driving module 8 that can reciprocate along the Y-axis direction, and a detection mechanism 9 and a rotating mechanism 10 arranged on the Y-axis driving module 8. A pushing mechanism 11 is arranged on the rotating mechanism 10, and a clamping jaw mechanism 12 is arranged on the pushing mechanism 11.

[0047] In this embodiment, an XY-axis driving assembly is provided on the second station. The XY-axis driving assembly includes a first Y-axis driving mechanism 19 and a first X-axis driving mechanism 20. The fish-tail unit 14 is arranged on the XY-axis driving assembly. The first Y-axis driving mechanism 19 and the first X-axis driving mechanism 20 are respectively used to drive the fish-tail unit 14 to move along the Y-axis and X-axis directions. Specifically, the first Y-axis driving mechanism 19 is used to adjust the position of the fish-tail unit 14 in the Y-axis direction, and the first X-axis driving mechanism 20 is used to drive the fish-tail unit 14 to move back and forth along the X-axis direction so as to perform fish-tail grinding on the tool.

[0048] In this embodiment, a conveying mechanism 28 that can reciprocate along the X-axis direction is arranged below the loading and unloading unit. The loading tray 29 and the unloading tray 30 are arranged on the conveying mechanism 28.

[0049] In this embodiment, the fish-tail unit 14 includes a fish-tail electric spindle 141 and a fish-tail grinding wheel 142 connected to the fish-tail electric spindle 141.

[0050] In this embodiment, the left-handed machining unit includes a first electric spindle 15 arranged on the workbench 1. The output end of the first electric spindle 15 is connected with a first grinding wheel 16. The first grinding wheel 16 is used to perform left-handed spiral groove machining on the tool on the shaft chuck 6 at the third station. The right-handed machining unit includes a second electric spindle 17 arranged on the workbench 1. The output end of the second electric spindle 17 is connected with a second grinding wheel 18. The second grinding wheel 18 is used to perform right-handed spiral groove machining on the tool on the shaft chuck 6 at the fourth station.

[0051] In this embodiment, a machine outer cover 32 is further arranged outside the workbench 1. A display control console 33 is rotatably arranged on one side of the machine outer cover 32.

[0052] In this embodiment, a guide cylinder 3 and a push cylinder 4 are arranged below the shaft chuck 6 corresponding to the first station on the mounting table 2. The guide cylinder 3 is used to clamp and position the tool on the shaft chuck 6 at the first station, so as to facilitate the clamping mechanism 12 to insert the tool into the locking position on the shaft chuck 6. The push cylinder 4 is used to cooperate with the limit switch of the shaft chuck 6 at the first station to release the clamping limit of the shaft chuck 6 on the tool, so as to facilitate the clamping mechanism 12 to take out the tool from the shaft chuck 6.

[0053] In this embodiment, support mechanisms 27 are respectively arranged below the spindle chucks 6 corresponding to the second, third, and fourth stations around the installation table 2 for supporting the cutting tools on the spindle chucks 6. Specifically, the support mechanism 27 includes a fixing member 271, a pressing plate 272, and a driving cylinder 273. The fixing member 271 is provided with a V-shaped groove for placing the cutting tool. The driving cylinder 273 is arranged on one side of the support plate. The output end of the driving cylinder 273 is connected to the pressing plate 272, and the driving cylinder 273 drives the pressing plate 272 to rotate up and down to loosen or press the cutting tool. The rear end of the cutting tool is clamped by the spindle chuck 6, and the front end of the cutting tool is supported by the support mechanism 27, so that when the fish-tail unit 14, the left-handed machining unit, and the right-handed machining unit machine the front end of the cutting tool, the cutting tool has stable support below, thereby reducing the influence of cutting stress on the cutting tool.

[0054] In this embodiment, a left-handed adjustment assembly is arranged on the third station, which includes a second Y-axis driving mechanism 21, a first Z-axis adjustment mechanism 22, and a first offset swing plate 23. The first Z-axis adjustment mechanism 22 is arranged on the first offset swing plate 23, the first offset swing plate 23 is arranged on the first Y-axis driving mechanism 19, and the left-handed machining unit is arranged on the first Z-axis adjustment mechanism 22. The first Z-axis adjustment mechanism 22 is used to adjust the position of the left-handed machining unit in the Z-axis direction. The second Y-axis driving mechanism 21 drives the first grinding wheel 16 to move back and forth in the Y-axis direction to machine the left-handed spiral groove of the cutting tool, and the first offset swing plate 23 adjusts the offset angle of the first grinding wheel 16 to meet the machining angle requirements of the left-handed spiral grooves of different cutting tools.

[0055] In this embodiment, a right-handed adjustment assembly is arranged on the fourth station, which includes a second X-axis driving mechanism 24, a second Z-axis adjustment mechanism 25, and a second offset swing plate 26. The second Z-axis adjustment mechanism 25 is arranged on the second offset swing plate 26, the second offset swing plate 26 is arranged on the second X-axis driving mechanism 24, and the right-handed machining unit is arranged on the second Z-axis adjustment mechanism 25. The second Z-axis adjustment mechanism 25 is used to adjust the position of the right-handed machining unit in the Z-axis direction. The second X-axis driving mechanism 24 drives the second grinding wheel 18 to move back and forth in the X-axis direction to machine the right-handed spiral groove of the cutting tool, and the second offset swing plate 26 adjusts the offset angle of the second grinding wheel 18 to meet the machining angle requirements of the right-handed spiral grooves of different cutting tools.

[0056] The method for repeated machining of tool point finding in the present invention is specifically as follows:

[0057] S100. The loading and unloading unit clamps the cutting tool to be repeatedly machined on the loading tray 29 and inserts it onto the spindle chuck 6 at the first station;

[0058] Among them, step S100 includes:

[0059] S110, the conveying mechanism 28 drives the loading tray 29 to move to the bottom of the loading and unloading unit, the rotating mechanism 10 rotates downward 90°, the pushing mechanism 11 pushes the clamping mechanism 12 to move downward to the top of the loading tray 29, the clamping mechanism 12 clamps the tool, the pushing mechanism 11 contracts and drives the clamping mechanism 12 to move upward, the rotating mechanism 10 rotates upward 90°, the Y-axis driving module 8 drives the clamping mechanism 12 to move forward a certain distance along the Y-axis, and the pushing mechanism 11 pushes the clamping mechanism 12 to move forward so that the tool is inserted into the placement position of the rotating shaft chuck 6;

[0060] S120, the material guide cylinder 3 clamps and positions the tool on the shaft chuck 6 of the first station, the material push cylinder 4 extends upward to cooperate with the limit switch of the shaft chuck 6 of the first station, the clamping mechanism 12 retreats a certain distance to re-clamp the tool, and the Y-axis drive module 8 drives the clamping mechanism 12 to move forward a certain distance, thereby inserting the tool into the locking position of the shaft chuck 6;

[0061] S130, the ejection cylinder 4 withdraws downward and releases the limit switch of the shaft chuck 6, so that the shaft chuck 6 can lock the tool in the locking position, and the clamping jaw mechanism 12 releases the tool and withdraws and resets;

[0062] S140, the detection mechanism 9 extends to the left to detect the position of the tool, and then the material guide cylinder 3 releases the tool;

[0063] S200, the first cylinder 39 and the second cylinder 40 extend, the back light source 36 and the side light source 37 are turned on, the short-tube camera 38 takes a picture of the tool image, the visual module 41 calculates the length dimension and the spiral angle data of the tool and transmits them to the CNC system, and then the back light source 36 and the side light source 37 are turned off;

[0064] S300, the annular light source 35 is turned on, the reflecting prism 13 extends to reflect the annular light source 35 to the end face of the tool, the long-tube camera photographs the end face of the tool, the visual module 41 calculates the end face diameter size data of the tool and transmits it to the CNC system, then the annular light source 35 is turned off, and the first cylinder 39 and the second cylinder 40 are retracted;

[0065] S400, the rotating table 5 rotates to drive the tool to the second station, and the fishtail unit of the second station performs fishtail grinding on the tool;

[0066] Wherein, step S400 includes:

[0067] S410, the rotating table 5 moves up and rotates to drive the tool to the second station and then moves down to be supported and clamped by the supporting mechanism 27;

[0068] S420. Tail processing: The rotating shaft chuck 6 clamps and fixes the tool. The first Y-axis driving mechanism 19 drives the tail unit 14 to move to the specified position. The first X-axis driving mechanism 20 drives the tail grinding wheel 142 to move leftward to perform the first-pass tail processing on the end of the tool. After that, the first X-axis driving mechanism 20 drives the tail grinding wheel 142 to move rightward to retract and reset. The rotating shaft chuck 6 drives the tool to rotate 180°. The first X-axis driving mechanism 20 continues to drive the tail grinding wheel 142 to move leftward to perform the second-pass tail processing on the end of the tool. After that, the first X-axis driving mechanism 20 drives the tail grinding wheel 142 to move rightward to retract and reset;

[0069] S500. The rotating table 5 rotates to drive the tool to rotate to the third station, and the left-handed machining unit at the third station performs left-handed spiral groove machining on the tool;

[0070] Among them, step S500 includes:

[0071] S510. The rotating table 5 moves upward and rotates to drive the tool to rotate to the third station and then moves downward for the support mechanism 27 to support and clamp;

[0072] S520. Left-handed machining: The first Z-axis adjustment mechanism 22 drives the left-handed machining unit to move downward to the specified position. The rotating shaft chuck 6 drives the tool to rotate. The second Y-axis driving mechanism 21 drives the first grinding wheel 16 to move toward the tool and machine the left-handed spiral groove. The first Z-axis adjustment mechanism 22 drives the left-handed machining unit to move upward to reset. The second Y-axis driving mechanism 21 drives the first grinding wheel 16 to retract and reset. The rotating shaft chuck 6 stops rotating;

[0073] S600. The rotating table 5 rotates to drive the tool to rotate to the fourth station, and the right-handed machining unit at the fourth station performs right-handed spiral groove machining on the tool, thereby obtaining a new tool;

[0074] Among them, step S600 includes:

[0075] S610. The rotating table 5 moves upward and rotates to drive the tool to rotate to the third station and then moves downward for the support mechanism 27 to support and clamp;

[0076] S620. Right-handed machining: The second Z-axis adjustment mechanism 25 drives the right-handed machining unit to move downward to the specified position. The rotating shaft chuck 6 drives the tool to rotate. The second X-axis driving mechanism 24 drives the second grinding wheel 18 to move toward the tool and machine the right-handed spiral groove. The second Z-axis adjustment mechanism 25 drives the right-handed machining unit to move upward to reset. The second X-axis driving mechanism 24 drives the second grinding wheel 18 to retract and reset. The rotating shaft chuck 6 stops rotating;

[0077] S700. The rotating table 5 rotates to drive the new tool to rotate to the first station, and the loading and unloading unit clamps out the new tool at the first station and places it in the unloading tray 30;

[0078] Among them, step S700 includes:

[0079] S710. The rotary table 5 moves upward and rotates to drive the new tool to rotate, and then moves downward after reaching the first station;

[0080] S720. The feeding cylinder 3 clamps and positions the new tool on the rotating shaft chuck 6 at the first station. The pushing mechanism 11 pushes the jaw mechanism 12 forward to clamp the new tool. The ejector cylinder 4 extends upward to cooperate with the limit switch of the rotating shaft chuck 6 at the first station, and the feeding cylinder 3 releases. The pushing mechanism 11 contracts to drive the jaw mechanism 12 to retreat a certain distance. The Y-axis driving module 8 drives the jaw mechanism 12 to retreat. The rotating mechanism 10 rotates downward by 90°. The conveying mechanism 28 drives the blanking tray 30 to move directly below the loading and unloading unit. The pushing mechanism 11 pushes the jaw mechanism 12 to move downward and places the processed new tool into the blanking tray 30.

[0081] Although the present invention has been specifically shown and described in conjunction with the preferred embodiments, those skilled in the art should understand that various changes made to the present invention in terms of form and details without departing from the spirit and scope of the present invention defined by the appended claims all fall within the protection scope of the present invention.

Claims

1. A method for repeated machining of a tool to find a point, characterized in that: It includes the following steps: S100. The loading and unloading unit picks up the tool to be repeatedly processed on the loading tray and inserts it into the spindle chuck at the first station; S200. The backlight source and the side light source are turned on, the short-barrel camera takes an image of the tool, the vision module calculates the length dimension and the helix angle data of the tool and transmits them to the CNC system, and then the backlight source and the side light source are turned off; S300. The annular light source is turned on, the reflecting prism extends to reflect the annular light source to the end face of the tool, the long-barrel camera takes an image of the end face of the tool, the vision module calculates the end face diameter dimension data of the tool and transmits it to the CNC system, and then the annular light source is turned off; S400. The rotating table rotates to drive the tool to rotate to the second station, and the fish-tail unit at the second station grinds the fish-tail of the tool; S500. The rotating table rotates to drive the tool to rotate to the third station, and the left-handed processing unit at the third station processes the left-handed helical groove of the tool; S600. The rotating table rotates to drive the tool to rotate to the fourth station, and the right-handed processing unit at the fourth station processes the right-handed helical groove of the tool, thereby obtaining a new tool; S700. The rotating table rotates to drive the new tool to rotate to the first station, and the loading and unloading unit picks out the new tool at the first station and places it into the unloading tray; It also includes a workbench, a circular mounting table is provided in the middle of the workbench, the rotating table is arranged on the mounting table, the first, second, third, and fourth stations are sequentially arranged along the circumferential direction on the workbench, the loading and unloading unit, the fish-tail unit, the left-handed processing unit, and the right-handed processing unit are respectively arranged at the first, second, third, and fourth stations, there are four spindle chucks arranged along the circumferential direction on the rotating table, and the four spindle chucks respectively correspond to the first station, the second station, the third station, and the fourth station, the rotating table is drivingly connected with a driving member for driving the rotating table to lift and rotate, a vertical stand is arranged at the first station, and the backlight source, the side light source, the annular light source, the short-barrel camera, the long-barrel camera, and the reflecting prism are installed on the vertical stand; The short-barrel camera and the long-barrel camera are arranged above the spindle chuck at the first station, the side light source and the annular light source are arranged on the left side of the spindle chuck at the first station, and the backlight source is arranged below the spindle chuck at the first station.

2. The method for repeated machining of a tool to find a point according to claim 1, characterized in that: The front-back direction of the workbench is the Y-axis direction, the left-right direction is the X-axis direction, and the up-down direction is the Z-axis direction. The loading and unloading unit includes a Y-axis driving module that can reciprocate in the Y-axis direction and a detection mechanism and a rotating mechanism arranged on the Y-axis driving module. A pushing mechanism is arranged on the rotating mechanism, and a jaw mechanism is arranged on the pushing mechanism.

3. The method for repeated machining of a tool to find a point according to claim 2, characterized in that: An XY-axis driving assembly is arranged at the second station, which includes a first Y-axis driving mechanism and a first X-axis driving mechanism, and the fish-tail unit is arranged on the XY-axis driving assembly. The first Y-axis driving mechanism and the first X-axis driving mechanism are respectively used to drive the fish-tail unit to move in the Y-axis and X-axis directions.

4. The method for repeated machining of a tool to find a point according to claim 2, characterized in that: A conveying mechanism that can reciprocate in the X-axis direction is arranged below the loading and unloading unit, and the loading tray and the unloading tray are arranged on the conveying mechanism.

5. The method for repeated machining of a tool to find a point according to claim 1, characterized in that: The fish-tail unit includes a fish-tail electric spindle and a fish-tail grinding wheel connected to the fish-tail electric spindle.

6. The method for repeated machining of a tool to find a point according to claim 1, characterized in that: The left-handed machining unit includes a first electric spindle disposed on the workbench. A first grinding wheel is connected to the output end of the first electric spindle. The first grinding wheel is used for machining a left-handed spiral groove on the tool on the spindle chuck at the third station. The right-handed machining unit includes a second electric spindle disposed on the workbench. A second grinding wheel is connected to the output end of the second electric spindle. The second grinding wheel is used for machining a right-handed spiral groove on the tool on the spindle chuck at the fourth station.

7. The method for repeated machining of a tool to find a point according to claim 1, characterized in that: An outer machine cover is further disposed outside the workbench. A display control console is rotatably disposed on one side of the outer machine cover.

8. The method for repeated machining of a tool to find a point according to claim 1, characterized in that: A feeding cylinder and a ejecting cylinder are disposed below the spindle chuck corresponding to the first station on the installation table. The feeding cylinder is used for clamping and positioning the tool on the spindle chuck at the first station, and the ejecting cylinder is used for releasing the clamping limit of the spindle chuck at the first station on the tool.

Images