Milling cutter spiral contour detection equipment and detection method

Abstract

The invention discloses milling cutter spiral contour detection equipment and a detection method, and belongs to the technical field of cutter quality inspection, the milling cutter spiral contour detection equipment comprises a measurement platform, the measurement platform is provided with a positioning mechanism, and the positioning mechanism comprises a rotating disc and a clamping jaw chuck located on the rotating disc; and a liftable base which penetrates through the rotating disc and the clamping jaw chuck is arranged on the rotating disc. A milling cutter spiral contour detection method comprises the following steps that S1, a milling cutter is placed in a placing groove of a base, and the milling cutter is fixed through a clamping jaw chuck; s2, a probe is placed on the smooth surface of the milling cutter, a rotating disc is driven to rotate, and the position precision of the milling cutter is calibrated; s3, a probe is placed on the spiral contour surface of the milling cutter, the rotating disc is driven to rotate, and meanwhile the base moves in the vertical direction; and S4, uploading the detection data to a system for judgment. According to the scheme, the spiral contour of the cutting edge of the milling cutter can be detected, and qualified requirements of milling cutter products are ensured.

Description

Technical Field

[0001] The present invention relates to a tool quality inspection technology, and more specifically, to a milling cutter spiral profile detection device and a detection method. Background Art

[0002] For milling cutter products, conventional testing focuses more on factors such as roundness, runout, and cutting edge angle, but lacks corresponding testing equipment for the processing and testing of cutting edge grooves. For precision milling cutters, the direction of each of the four cutting edges and whether the spiral shape is uniform are also extremely important factors in the field of precision machining.

[0003] For example: Chinese patent announcement number CN113218354B, announcement date September 20, 2022, invention name is a method for efficiently measuring and positioning the cutting edge radius of an end mill. The application discloses a method for measuring the cutting edge radius of a milling cutter, establishing a fixed platform for the end mill to limit the five degrees of freedom of the end mill so that the end mill can only rotate along its axis, and configuring a laser marker for the fixed platform for the end mill; establishing a plane rectangular coordinate system XOY of the fixed platform for the end mill, and setting the coordinates of the initial position point O on the fixed platform for the end mill to (x0, y0) according to the relative position of the fixed platform for the end mill and the laser marker; cleaning the cutting edge of the end mill; locating the cutting edge on the side edge of the end mill that is about to participate in the cutting process; installing the end mill; locating the cutting edge of the end mill in the monitor of the cutting edge detector. This solution has the characteristics of easy measurement, accurate positioning, and high efficiency for measuring and positioning the cutting edge radius of the end mill, but it cannot measure the spiral profile of the cutting edge of the milling cutter. Summary of the invention

[0004] The present invention overcomes the lack of technology for quality inspection of the spiral profile of a milling cutter, and provides a milling cutter spiral profile detection device and a detection method. This solution can perform precise detection of the spiral profile of the milling cutter to ensure the quality of the milling cutter product.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: a milling cutter spiral profile detection device, including a measuring platform, a positioning mechanism is provided on the measuring platform, the positioning mechanism includes a rotating disk and a clamping chuck located on the rotating disk, and the rotating disk is provided with a base that can be raised and lowered and passes through the rotating disk and the clamping chuck. In this solution, the base is used to place the milling cutter, and the milling cutter can be positioned by positioning the base through the rotating disk and the clamping chuck. The rotation of the rotating disk can drive the milling cutter to rotate circumferentially. When the milling cutter rotates circumferentially, it also moves in the vertical direction, so that the detection mechanism can move along the spiral profile on the milling cutter, and finally upload the profile curve detection data on the milling cutter to the measurement system, so as to directly detect whether the spiral profile of the milling cutter product is good.

[0006] Preferably, the clamping jaw chuck includes a clamping jaw, and a rolling body is provided on the working end surface of the clamping jaw, and the rolling body rolls in the vertical direction. The clamping jaw is used to radially position and clamp the milling cutter on the base. When the clamping jaw chuck rotates, the clamping jaw chuck fixes the milling cutter to rotate together, and at the same time, the working end surface of the clamping jaw is provided with a rolling body in the vertical rotation direction, thereby greatly reducing the resistance of the milling cutter in the vertical direction, ensuring that the milling cutter can still move in the vertical direction during the rotation process.

[0007] Preferably, the jaw chuck is evenly arranged with a plurality of correcting parts in the circumference, and the measuring platform is provided with a correcting device cooperating with the correcting parts. The correcting parts can adjust the radial positioning of the jaw chuck to ensure that the milling cutter is in the correct measuring position. Specifically, the correcting parts can be correcting screws, and the correcting device can be correcting motors. The correcting motors can output torque to rotate the correcting screws, driving the jaws on the jaw chuck to make micro adjustments.

[0008] Preferably, a placement groove is provided in the base, and a clamping part is provided in the placement groove. The placement groove is used to place the milling cutter, and the milling cutter is clamped and fixed in the placement groove by the clamping part. When the base moves in the vertical direction, the milling cutter is driven to move in the vertical direction together.

[0009] Preferably, the measuring platform is provided with a driving disk, the driving disk cooperates with the rotating disk, and the driving disk is connected to a first driving device. The first driving device drives the driving disk to rotate, and then the rotating disk is driven to rotate by the driving disk, and finally the milling cutter is rotated.

[0010] Preferably, the measuring mechanism comprises a fixed bracket, on which a measuring needle assembly is slidably connected in the vertical direction, and the measuring needle assembly is arranged above the clamping chuck. The measuring needle assembly can be used to detect the radial runout of the milling cutter and measure the spiral profile, and the position of the measuring needle assembly can be adjusted by sliding in the vertical direction to ensure a suitable measuring position.

[0011] Preferably, the measuring needle assembly comprises a measuring bracket, on which a measuring needle is arranged transversely, and a dial indicator is provided on the side of the measuring needle away from the clamping jaw chuck. The dial indicator can measure the runout of the measuring needle to obtain the contour accuracy of the milling cutter.

[0012] Preferably, a method for detecting the spiral profile of a milling cutter is implemented using the above-mentioned milling cutter spiral profile detection equipment, and includes the following steps: S1: placing the milling cutter in the placement slot of the base, and fixing the milling cutter by a clamping chuck; S2: placing the measuring needle on the smooth surface of the milling cutter, driving the rotating disk to rotate, and calibrating the position accuracy of the milling cutter; S3: placing the measuring needle on the spiral profile surface of the milling cutter, driving the rotating disk to rotate, and at the same time making the base move in the vertical direction; S4: uploading the detection data to the system for judgment.

[0013] Preferably, in step S2, according to the radial runout of the milling cutter detected by the probe, the position of the clamping jaw is adjusted by using a correction device and a correction member on the clamping jaw chuck until the radial runout is within 0.001 mm. Before measuring the spiral profile accuracy of the milling cutter, the radial runout value of the milling cutter needs to be adjusted so that the radial runout error is within a certain range to ensure the accuracy of the measurement data.

[0014] Preferably, in step S3, during the measurement process, the rotation speed of the drive disk is less than or equal to 2° / s, and the linear motion speed of the base is less than or equal to 3mm / s; the ratio of the rotation speed of the drive disk to the vertical motion speed of the base gradually decreases. During the measurement process, it is necessary to make the probe hit the root of the spiral profile of the milling cutter, and then move from the root to the end face of the milling cutter, wherein the spiral profile of the milling cutter gradually increases from the root to the end, so that the ratio of the rotation speed of the drive disk to the linear motion speed of the base is not a constant value, and the ratio of the rotation speed of the drive disk to the vertical motion speed of the base gradually decreases to measure the profile of the spiral cutting edge of the milling cutter.

[0015] Compared with the prior art, the present invention has the following beneficial effects: (1) it can measure the spiral profile of the milling cutter cutting edge to ensure the qualified requirements of the milling cutter product; (2) the device is easy to use and can quickly realize the spiral profile detection of the milling cutter. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is the front view of the present invention.

[0017] Figure 2 It is an axonometric drawing of the present invention.

[0018] Figure 3 This is an axonometric diagram of embodiment 2 of the present invention.

[0019] Figure 4 for Figure 3 A is an enlarged schematic diagram.

[0020] Figure 5 It is a top view of the present invention.

[0021] Figure 6 for Figure 5 Section view along AA direction.

[0022] Figure 7 Schematic diagram of the milling cutter of the present invention.

[0023] Figure 8 It is a top view schematic diagram of the clamping jaw chuck of the present invention.

[0024] Fig. 9 It is a schematic diagram of the structure of the clamping jaw chuck of the present invention.

[0025] In the figure: 1. measuring platform, 2. rotating disk, 3. clamping jaw chuck, 4. base, 5. clamping jaw, 6. rolling body, 7. correcting member, 8. correcting device, 9. placement groove, 10. clamping part, 11. driving disk, 12. first driving device, 13. measuring bracket, 14. fixed bracket, 15. measuring needle, 16. dial indicator, 17. milling cutter, 18. frame, 19. linear guide rail, 20. pull rod, 21. connecting plate, 22. second driving device, 23. limit arc, 24. third driving device, 25. first telescopic device, 26. screw, 27. fourth driving device, 28. second telescopic device, 29. slide rail, 30. driving cylinder. DETAILED DESCRIPTION

[0026] The technical solution of the present invention is further described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0027] Example 1: Figure 1 and Figure 2 The milling cutter spiral profile detection device shown in the figure includes a frame 18, the top of the frame 18 is a measuring platform 1, and a positioning mechanism is arranged on the measuring platform 1. Specifically, the positioning mechanism includes a rotating disk 2, and a clamping chuck 3 is fixedly connected to the upper side of the rotating disk 2. The rotating disk 2 is rotatably connected to the measuring platform 1. When the rotating disk 1 rotates, the clamping chuck 3 also rotates accordingly; wherein the rotating disk 2 is a gear disk, and a driving disk 11 is also arranged on the measuring platform 1, and the driving disk 11 is also a gear disk, and the driving disk 11 is meshed with the rotating disk 2 for transmission. A first driving device 12 is provided at the bottom of the measuring platform 1. The first driving device 12 is fixed at the bottom of the measuring platform 1 and is fixedly connected to the driving disk 11. Specifically, the first driving device 12 is a rotating motor. The output end of the rotating motor is fixedly connected to the driving disk 11. When the rotating motor is working, its output end outputs torque, drives the driving disk 11 to rotate, and then drives the rotating disk 2 to rotate. The clamping chuck 3 also rotates along the rotating disk 2. In order to facilitate the rotation of the driving disk 11 and the rotating disk 2, bearings of matching sizes are provided at the corresponding two turntable positions of the measuring platform 1. In this embodiment, the size of the driving disk 11 is smaller than the size of the rotating disk 2, so that a speed reduction device is formed between the driving disk 11 and the rotating disk 2. The rotation speed of the rotating disk 2 will be smaller than the rotation speed of the driving disk 11. During the spiral profile detection process of the milling cutter 17, the rotation of the milling cutter 17 is slower and more stable.

[0028] like Figure 5 and Figure 6As shown, the center of the jaw chuck 3 is in a vertical hollow state, and a base 4 is provided at the central positioning point of the jaw chuck 3. The base 4 can move vertically along the central positioning point of the jaw chuck 3. The base 4 is used to place and fix the milling cutter 17 product. When the jaw chuck 3 rotates circumferentially, the base 4 clamped and positioned by the jaw chuck 3 will also rotate together. At the same time, the base 4 also moves in the vertical direction, so that the milling cutter 17 on the base 4 can synchronously complete the circumferential rotation and vertical linear motion, that is, the surface measuring point of the milling cutter 17 will show a spiral motion, so that the spiral profile detection of the cutting edge of the milling cutter 17 can be completed. Specifically, a linear motion mechanism is arranged below the jaw chuck 3 and below the measuring platform 1. The linear motion mechanism includes a pull rod 20 and a linear guide 19. The linear guide 19 is arranged on the frame 18 and is driven by a lead screw. A connecting plate 21 is arranged between the lead screw and the pull rod 20. One end of the connecting plate 21 is slidably arranged on the lead screw pair, and the other end of the connecting plate 21 is fixedly connected to the bottom of the pull rod 20. The pull rod 20 is located at the axis position of the jaw chuck 3, and the top of the pull rod 20 is the base 4. When the linear motion mechanism is working, the connecting plate 21 moves up and down along the linear guide 19, thereby driving the pull rod 20 to move up and down at the axis position of the jaw chuck 3. Among them, a second driving device 22 is arranged below the linear guide 19. The second driving device 22 is a rotating motor. The output end of the second driving device 22 is connected to the lead screw. When the second driving device 22 is started, it drives the lead screw to rotate, thereby completing the up and down displacement of the pull rod 20. The use of a lead screw drive can ensure that the linear motion accuracy of the base 4 is higher, and ensure that the accuracy and precision of the detection results are higher.

[0029] In this embodiment, the clamping jaw chuck 3 is a four-jaw chuck. Figure 5 , Figure 8 and Fig. 9 As shown, it includes four jaws 5, which are arranged on the upper surface of the jaw chuck 3 and move radially along the jaw chuck 3. The working end of the jaw 5 faces inward along the radial direction of the jaw chuck 3, and a plurality of rolling bodies 6 are arranged on the end surface of the working end of the jaw 5. The rolling body 6 is specifically a ball; the ball is vertically arranged on the working end surface of the jaw 5, and the rotating axis of the ball is horizontally arranged, and the rotation of the rotating surface of the ball is along the vertical direction. When the jaw 5 of the jaw chuck 3 clamps the milling cutter 17, the four jaws 5 radially position the milling cutter 17 product, and at the same time, the rolling body 6 on the end surface of the jaw 5 is pressed against the surface of the milling cutter 17. When the linear moving mechanism drives the milling cutter 17 to move vertically, the rolling body 6 rolls to reduce the friction of the movement of the milling cutter 17.

[0030] It should be noted that a placement slot 9 is provided in the base 4. Figure 7 and Figure 8As shown, one end of the milling cutter 17 is a threaded section, and the other end is a smooth section. The cross section near the smooth section is an oblong cross section, and the corresponding placement slot 9 is also an oblong hole slot body. The smooth section of the milling cutter 17 can be adapted and connected with the placement slot 9. At the same time, a limited arc 23 is arranged on the surface of the smooth section of the milling cutter 17, and a clamping portion 10 is arranged in the placement slot 9. Specifically, the clamping portion 10 is a limiting protrusion. When the milling cutter 17 is placed in the placement slot 9, the limiting arc 23 on the milling cutter 17 is clamped together with the limiting protrusion in the placement slot 9, so that the milling cutter 17 and the placement slot 9 are axially connected together, and the milling cutter 17 and the placement slot 9 are not easy to fall off. When the linear moving mechanism drives the pull rod 20 to move up and down, the milling cutter 17 on the base 4 also moves up and down together under the action of the clamping portion 10.

[0031] A clamping mechanism is also provided on the measuring platform 1, and the clamping mechanism includes a third drive device 24 and a first telescopic device 25. Specifically, the third drive device 24 is a rotary motor, and the first telescopic device 25 is a telescopic cylinder. The third drive device 24 is provided on the telescopic end of the first telescopic device 25. A screw rod 26 is provided in the inner radial direction of the clamping chuck 3, and a thread matching the screw rod 26 is provided at the bottom of the clamping chuck 5. A connecting groove is provided at the end of the screw rod 26. The connecting groove is a quadrilateral, and the output end of the third drive device 24 can be connected with the connecting groove. When the clamping chuck 5 needs to be driven to move, the first drive device 12 drives the screw rod 26 on the rotating disk 2 to rotate to the position of the third drive device 24, and then the working end of the first telescopic device 25 extends, driving the third drive device 24 close to the screw rod 26, so that the output end of the third drive device 24 is connected to the connecting groove on the screw rod 26, and the third drive device 24 outputs torque to rotate the screw rod 26, so that the clamping chuck 3 clamps or releases the clamping 5.

[0032] A correction device 8 is also provided on the measuring platform 1. Figure 4As shown, the deviation correction device 8 includes a fourth drive device 27 and a second telescopic device 28. The fourth drive device 27 is a rotary motor, and the second telescopic device 28 is a telescopic cylinder. The fourth drive device 27 is arranged at the telescopic end of the second telescopic device 28. A deviation correction member 7 is arranged on the circumferential surface of the jaw chuck 3. The deviation correction member 7 is specifically an adjusting screw. There are six deviation correction members 7 in total, and they are evenly distributed around the jaw chuck 3. The radial thread of the adjusting screw is connected to the jaw chuck 3. One end of the adjusting screw is located inside the jaw chuck 3, and the other end is located outside the jaw chuck 3. The end is also provided with a quadrilateral connection groove, which can be adapted and connected with the working end of the fourth drive device 27. When the position of the base 4 is not at the detection position, the jaw 5 needs to be corrected by the deviation correction device 8, so that the base 4 can be in an accurate detection position. Specifically, the driving disk 11 drives the rotating disk 2 to rotate the correcting member 7 corresponding to the position that needs to be corrected to the position of the fourth driving device 27, and then the working end of the second telescopic device 28 is extended to drive the fourth driving device 27 to approach the correcting member 7, and the output end of the fourth driving device 27 is connected to the connecting groove on the correcting member 7. The fourth driving device 27 outputs a torque to drive the correcting member 7 to rotate, thereby performing a correction operation on the position of the base 4.

[0033] A measuring mechanism is also provided on the measuring platform 1. The measuring mechanism includes a slide rail 29 provided on the measuring platform 1. A fixed bracket 14 is slidably connected to the slide rail 29. The sliding direction of the slide rail 29 is radially toward the clamping chuck 3. The fixed bracket 14 is arranged vertically. A measuring needle assembly is also vertically slidably connected to the fixed bracket 14. The measuring needle assembly includes a measuring bracket 13. A measuring needle 15 is provided on the measuring bracket 13. The measuring needle 15 is arranged horizontally, and one end of the measuring needle 15 corresponds to the position of the milling cutter 17 on the base 4. A driving cylinder 30 is provided on the measuring platform 1. The telescopic end of the driving cylinder 30 is fixedly connected to the fixed bracket 14. When the driving cylinder 30 is working, it can drive the fixed bracket 14 to move, thereby driving the measuring needle 15 on the measuring needle assembly to approach the milling cutter 17, so that the end of the measuring needle 15 abuts against the surface of the milling cutter 17; a dial indicator 16 is provided at the other end of the measuring needle 15. The dial indicator 16 can measure the fluctuation value of the measuring needle 15, thereby measuring the spiral profile accuracy of the milling cutter 17. The stylus 15 is also provided with a chip, which can upload the detection data of the dial indicator 16 to the system for processing and storage. In order to ensure that the stylus 15 is always in contact with the surface of the milling cutter 17, an elastic member is also provided on the stylus 15, and the elastic force of the elastic member keeps the stylus 15 and the milling cutter 17 in a tight state.

[0034] In this embodiment, two groups of measuring brackets 13 are used. Both groups of measuring brackets 13 are arranged on a fixed bracket 14 and distributed up and down. Each measuring bracket 13 is provided with a measuring needle 15. The measuring needle 15 at the bottom is used to measure the radial runout of the smooth section at the bottom of the milling cutter 17, while the measuring needle 15 at the top is used to measure the accuracy of the spiral profile of the cutting edge of the milling cutter 17.

[0035] Example 2: Figure 3 The milling cutter spiral profile detection device shown in the figure includes a frame 18, the top of the frame 18 is a measuring platform 1, and a positioning mechanism is arranged on the measuring platform 1. Specifically, the positioning mechanism includes a rotating disk 2, and a clamping chuck 3 is fixedly connected to the upper side of the rotating disk 2. The rotating disk 2 is rotatably connected to the measuring platform 1. When the rotating disk 1 rotates, the clamping chuck 3 also rotates accordingly; wherein the rotating disk 2 is a gear disk, and a driving disk 11 is also arranged on the measuring platform 1, and the driving disk 11 is also a gear disk, and the driving disk 11 is meshed with the rotating disk 2 for transmission. A first driving device 12 is provided at the bottom of the measuring platform 1. The first driving device 12 is fixed at the bottom of the measuring platform 1 and is fixedly connected to the driving disk 11. Specifically, the first driving device 12 is a rotating motor. The output end of the rotating motor is fixedly connected to the driving disk 11. When the rotating motor is working, its output end outputs torque, drives the driving disk 11 to rotate, and then drives the rotating disk 2 to rotate. The clamping chuck 3 also rotates along the rotating disk 2. In order to facilitate the rotation of the driving disk 11 and the rotating disk 2, bearings of matching sizes are provided at the corresponding two turntable positions of the measuring platform 1. In this embodiment, the size of the driving disk 11 is smaller than the size of the rotating disk 2, so that a speed reduction device is formed between the driving disk 11 and the rotating disk 2. The rotation speed of the rotating disk 2 will be smaller than the rotation speed of the driving disk 11. During the spiral profile detection process of the milling cutter 17, the rotation of the milling cutter 17 is slower and more stable.

[0036] like Figure 5 and Figure 6As shown, the center of the jaw chuck 3 is in a vertical hollow state, and a base 4 is provided at the central positioning point of the jaw chuck 3. The base 4 can move vertically along the central positioning point of the jaw chuck 3. The base 4 is used to place and fix the milling cutter 17 product. When the jaw chuck 3 rotates circumferentially, the base 4 clamped and positioned by the jaw chuck 3 will also rotate together. At the same time, the base 4 also moves in the vertical direction, so that the milling cutter 17 on the base 4 can synchronously complete the circumferential rotation and vertical linear motion, that is, the surface measuring point of the milling cutter 17 will show a spiral motion, so that the spiral profile detection of the cutting edge of the milling cutter 17 can be completed. Specifically, a linear motion mechanism is arranged below the jaw chuck 3 and below the measuring platform 1. The linear motion mechanism includes a pull rod 20 and a linear guide 19. The linear guide 19 is arranged on the frame 18 and is driven by a lead screw. A connecting plate 21 is arranged between the lead screw and the pull rod 20. One end of the connecting plate 21 is slidably arranged on the lead screw pair, and the other end of the connecting plate 21 is fixedly connected to the bottom of the pull rod 20. The pull rod 20 is located at the axis position of the jaw chuck 3, and the top of the pull rod 20 is the base 4. When the linear motion mechanism is working, the connecting plate 21 moves up and down along the linear guide 19, thereby driving the pull rod 20 to move up and down at the axis position of the jaw chuck 3. Among them, a second driving device 22 is arranged below the linear guide 19. The second driving device 22 is a rotating motor. The output end of the second driving device 22 is connected to the lead screw. When the second driving device 22 is started, it drives the lead screw to rotate, thereby completing the up and down displacement of the pull rod 20. The use of a lead screw drive can ensure that the linear motion accuracy of the base 4 is higher, and ensure that the accuracy and precision of the detection results are higher.

[0037] In this embodiment, the clamping jaw chuck 3 is a four-jaw chuck. Figure 5 , Figure 8 and Fig. 9 As shown, it includes four jaws 5, which are arranged on the upper surface of the jaw chuck 3 and move radially along the jaw chuck 3. The working end of the jaw 5 faces inward along the radial direction of the jaw chuck 3, and a plurality of rolling bodies 6 are arranged on the end surface of the working end of the jaw 5. The rolling body 6 is specifically a ball; the ball is vertically arranged on the working end surface of the jaw 5, and the rotating axis of the ball is horizontally arranged, and the rotation of the rotating surface of the ball is along the vertical direction. When the jaw 5 of the jaw chuck 3 clamps the milling cutter 17, the four jaws 5 radially position the milling cutter 17 product, and at the same time, the rolling body 6 on the end surface of the jaw 5 is pressed against the surface of the milling cutter 17. When the linear moving mechanism drives the milling cutter 17 to move vertically, the rolling body 6 rolls to reduce the friction of the movement of the milling cutter 17.

[0038] It should be noted that a placement slot 9 is provided in the base 4. Figure 7 and Figure 8As shown, one end of the milling cutter 17 is a threaded section, and the other end is a smooth section. The cross section near the smooth section is an oblong cross section, and the corresponding placement slot 9 is also an oblong hole slot body. The smooth section of the milling cutter 17 can be adapted and connected with the placement slot 9. At the same time, a limited arc 23 is arranged on the surface of the smooth section of the milling cutter 17, and a clamping portion 10 is arranged in the placement slot 9. Specifically, the clamping portion 10 is a limiting protrusion. When the milling cutter 17 is placed in the placement slot 9, the limiting arc 23 on the milling cutter 17 is clamped together with the limiting protrusion in the placement slot 9, so that the milling cutter 17 and the placement slot 9 are axially connected together, and the milling cutter 17 and the placement slot 9 are not easy to fall off. When the linear moving mechanism drives the pull rod 20 to move up and down, the milling cutter 17 on the base 4 also moves up and down together under the action of the clamping portion 10.

[0039] A clamping mechanism is also provided on the measuring platform 1, and the clamping mechanism includes a third drive device 24 and a first telescopic device 25. Specifically, the third drive device 24 is a rotary motor, and the first telescopic device 25 is a telescopic cylinder. The third drive device 24 is provided on the telescopic end of the first telescopic device 25. A screw rod 26 is provided in the inner radial direction of the clamping chuck 3, and a thread matching the screw rod 26 is provided at the bottom of the clamping chuck 5. A connecting groove is provided at the end of the screw rod 26. The connecting groove is a quadrilateral, and the output end of the third drive device 24 can be connected with the connecting groove. When the clamping chuck 5 needs to be driven to move, the first drive device 12 drives the screw rod 26 on the rotating disk 2 to rotate to the position of the third drive device 24, and then the working end of the first telescopic device 25 extends, driving the third drive device 24 close to the screw rod 26, so that the output end of the third drive device 24 is connected to the connecting groove on the screw rod 26, and the third drive device 24 outputs torque to rotate the screw rod 26, so that the clamping chuck 3 clamps or releases the clamping 5.

[0040] A correction device 8 is also provided on the measuring platform 1. Figure 4As shown, the deviation correction device 8 includes a fourth drive device 27 and a second telescopic device 28. The fourth drive device 27 is a rotary motor, and the second telescopic device 28 is a telescopic cylinder. The fourth drive device 27 is arranged at the telescopic end of the second telescopic device 28. A deviation correction member 7 is arranged on the circumferential surface of the jaw chuck 3. The deviation correction member 7 is specifically an adjusting screw. There are six deviation correction members 7 in total, and they are evenly distributed around the jaw chuck 3. The radial thread of the adjusting screw is connected to the jaw chuck 3. One end of the adjusting screw is located inside the jaw chuck 3, and the other end is located outside the jaw chuck 3. The end is also provided with a quadrilateral connection groove, which can be adapted and connected with the working end of the fourth drive device 27. When the position of the base 4 is not at the detection position, the jaw 5 needs to be corrected by the deviation correction device 8, so that the base 4 can be in an accurate detection position. Specifically, the driving disk 11 drives the rotating disk 2 to rotate the correcting member 7 corresponding to the position that needs to be corrected to the position of the fourth driving device 27, and then the working end of the second telescopic device 28 is extended to drive the fourth driving device 27 to approach the correcting member 7, and the output end of the fourth driving device 27 is connected to the connecting groove on the correcting member 7. The fourth driving device 27 outputs a torque to drive the correcting member 7 to rotate, thereby performing a correction operation on the position of the base 4.

[0041] A measuring mechanism is also provided on the measuring platform 1. The measuring mechanism includes a slide rail 29 provided on the measuring platform 1. A fixed bracket 14 is slidably connected to the slide rail 29. The sliding direction of the slide rail 29 is radially toward the clamping chuck 3. The fixed bracket 14 is arranged vertically. A measuring needle assembly is also vertically slidably connected to the fixed bracket 14. The measuring needle assembly includes a measuring bracket 13. A measuring needle 15 is provided on the measuring bracket 13. The measuring needle 15 is arranged horizontally, and one end of the measuring needle 15 corresponds to the position of the milling cutter 17 on the base 4. A driving cylinder 30 is provided on the measuring platform 1. The telescopic end of the driving cylinder 30 is fixedly connected to the fixed bracket 14. When the driving cylinder 30 is working, it can drive the fixed bracket 14 to move, thereby driving the measuring needle 15 on the measuring needle assembly to approach the milling cutter 17, so that the end of the measuring needle 15 abuts against the surface of the milling cutter 17; a dial indicator 16 is provided at the other end of the measuring needle 15. The dial indicator 16 can measure the fluctuation value of the measuring needle 15, thereby measuring the spiral profile accuracy of the milling cutter 17. The stylus 15 is also provided with a chip, which can upload the detection data of the dial indicator 16 to the system for processing and storage. In order to ensure that the stylus 15 is always in contact with the surface of the milling cutter 17, an elastic member is also provided on the stylus 15, and the elastic force of the elastic member keeps the stylus 15 and the milling cutter 17 in a tight state.

[0042] In this embodiment, a group of measuring brackets 13 are provided, and a measuring needle 15 is provided on the measuring bracket 13. Before detecting the spiral profile of the milling cutter 17, the measuring bracket 13 is first moved downward along the fixed bracket 14 so that the measuring needle 15 is pressed against the position of the smooth section at the bottom of the milling cutter 17, and the radial runout of the milling cutter 17 is measured to ensure the accurate position of the milling cutter 17. When the radial runout of the milling cutter 17 is qualified, the measuring bracket 13 is moved upward along the fixed bracket 14 so that the measuring needle 15 is pressed against the spiral cutting edge at the top of the milling cutter 17 to detect the spiral profile of the cutting edge of the milling cutter 17.

[0043] Example 3: Figures 1 to 9 A method for detecting the spiral profile of a milling cutter is shown, and the detection equipment of Example 1 or Example 2 is used for measurement.

[0044] First, place the milling cutter 17 to be tested in the placement groove 9 of the base 4, and fix the milling cutter 17 by the limiting arc 23 at the bottom of the milling cutter 17 and the clamping part 10 in the placement groove 9, then start the second driving device 22, and the connecting plate 21 and the pull rod 20 move downward together, so that the base 4 is located below the plane where the clamp 5 is located, so that the clamp 5 can only clamp and position the surface of the milling cutter 17 radially without clamping the base 4.

[0045] Then, the second drive device 22 is closed and the drive cylinder 30 is started, so that the measuring needle assembly moves along the linear guide rail 19, and the measuring needle 15 on the measuring needle assembly is close to the milling cutter 17. Specifically, when the measuring needles 15 on the measuring needle assembly are a group, it is necessary to adjust the position of the measuring bracket 13 on the fixed bracket so that the measuring needle 15 can be pressed against the surface of the milling cutter 17 and located at the smooth section of the lower half of the milling cutter 17, and then the first drive device 12 is driven to operate, and the first drive device 12 drives the driving disk 11 to rotate, and then the driving disk 11 drives the rotating disk 2 to rotate, and the milling cutter 17 clamped and positioned by the clamp 5 will rotate circumferentially. At this time, the radial runout of the circumferential surface of the milling cutter 17 can be measured by the measuring needle 15. When its radial runout is less than 0.001mm, it indicates that the position accuracy of the milling cutter 17 meets the measurement requirements.

[0046] The second drive device 22 is started again, so that the milling cutter 17 can also move downward in the vertical direction, and as the milling cutter 17 gradually descends, the measuring end of the probe 15 will gradually move to the position of the spiral profile of the cutting edge of the milling cutter 17, and then the probe 15 is adjusted to contact the spiral profile of the cutting edge of the milling cutter 17, and then the first drive device 12 and the second drive device 22 are started at the same time, so that the milling cutter 17 can rotate in the circumferential direction and move downward vertically. The data is uploaded to the system through the dial indicator 16 and the chip on the probe 15 for judgment and storage, and finally it is determined whether the accuracy of the spiral profile of the cutting edge of the milling cutter 17 product meets the requirements. Under this spiral motion, the probe 15 aligned with the spiral profile of the milling cutter 17 should not have any jumps, which proves that the actual and spiral data are consistent, and the difference between the two is the difference in spiral line processing, that is, the spiral accuracy.

[0047] It should be noted that when the radial runout measured by the measuring needle 15 on the smooth circular surface of the milling cutter 17 is greater than 0.001mm, a correction operation is required; specifically, the driving disk 11 drives the rotating disk 2 to rotate the adjusting screw corresponding to the position that needs to be corrected to the position of the fourth driving device 27, and then the working end of the second telescopic device 28 is extended to drive the fourth driving device 27 close to the adjusting screw, and the output end of the fourth driving device 27 is connected to the connecting groove on the adjusting screw. The fourth driving device 27 outputs torque to drive the adjusting screw to rotate, and the adjusting screw and the clamping chuck 3 are threadedly connected, so that the position of the base 4 can be corrected. Operation, until the radial runout of the outer circle of the milling cutter is less than 0.001mm, the spiral profile accuracy of the milling cutter 17 is measured again.

[0048] It should also be noted that, during the measurement process, the rotation speed of the drive disk 11 is kept less than or equal to 2° per second, while the linear descent speed of the base 4 is less than or equal to 3 mm per second, and because the spiral profile of the milling cutter 17 gradually increases from the root to the end, the ratio of the rotation speed of the drive disk 11 to the linear motion speed of the base 4 is not a constant. The ratio of the rotation speed of the drive disk 11 to the vertical motion speed of the base 4 gradually decreases to measure the profile of the spiral cutting edge of the milling cutter 17.

[0049] Of course, when there are two sets of measuring needles 15 on the measuring needle assembly, the lower measuring needle 15 is first placed on the smooth surface of the milling cutter 17 to measure the outer diameter runout of the milling cutter 17. After the radial runout meets the requirements, the upper measuring needle 15 is placed on the spiral profile of the cutting edge of the milling cutter 17 to detect the spiral accuracy. This solution can detect the outer diameter runout of the milling cutter 17 normally while measuring the spiral accuracy, ensuring that the position accuracy of the milling cutter 17 meets the requirements during the entire measurement process.

Claims

1. A milling cutter spiral profile detection device, characterized in that: It comprises a measuring platform, on which a positioning mechanism is arranged, the positioning mechanism comprises a rotating disk and a clamping chuck located on the rotating disk, the rotating disk is provided with a liftable base passing through the rotating disk and the clamping chuck, and the measuring platform is also provided with a measuring mechanism.

2. A milling cutter spiral profile detection device according to claim 1, characterized in that: The clamping jaw chuck comprises a clamping jaw, a working end surface of the clamping jaw is provided with a rolling body, and the rolling body rolls in a vertical direction.

3. A milling cutter spiral profile detection device according to claim 1 or 2, characterized in that: The clamping jaw chuck is provided with a plurality of deviation-correcting members evenly arranged in the circumference thereof, and the measuring platform is provided with a deviation-correcting device cooperating with the deviation-correcting members.

4. The milling cutter spiral profile detection device according to claim 1, characterized in that: A placement groove is provided in the base, and a clamping portion is provided in the placement groove.

5. The milling cutter spiral profile detection device according to claim 1, characterized in that: The measuring platform is provided with a driving disk, the driving disk cooperates with the rotating disk, and the driving disk is connected to a first driving device.

6. A milling cutter spiral profile detection device according to any one of claims 1, 2, 4 or 5, characterized in that: The measuring mechanism comprises a fixed bracket, on which a measuring needle assembly is slidably connected in a vertical direction, and the measuring needle assembly is arranged above the clamping jaw chuck.

7. A milling cutter spiral profile detection device according to claim 6, characterized in that: The measuring needle assembly comprises a measuring bracket, on which a measuring needle is arranged transversely, and a dial indicator is arranged on the side of the measuring needle away from the clamping jaw chuck.

8. A method for detecting the spiral profile of a milling cutter, characterized in that: The method is implemented by using the milling cutter spiral profile detection device according to any one of claims 1 to 7, comprising the following steps: S1: Place the milling cutter in the placement slot of the base and fix the milling cutter by the clamping chuck; S2: Place the probe on the smooth surface of the milling cutter, drive the rotating disk to rotate, and calibrate the position accuracy of the milling cutter; S3: Place the measuring needle on the spiral profile surface of the milling cutter, drive the rotating disk to rotate, and make the base move vertically at the same time; S4: Upload the test data to the system for determination.

9. A method for detecting the spiral profile of a milling cutter according to claim 8, characterized in that: In step S2, according to the radial runout of the milling cutter detected by the measuring needle, the position of the clamping jaws is adjusted by using the correction device and the correction member on the clamping jaw chuck until the radial runout is within 0.001 mm.

10. A method for detecting the spiral profile of a milling cutter according to claim 8, characterized in that: In step S3, during the measurement process, the rotation speed of the driving disk is less than or equal to 2° / s, and the linear motion speed of the base is less than or equal to 3 mm / s; the ratio of the rotation speed of the driving disk to the vertical motion speed of the base gradually decreases.

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