A Tool Setting Instrument for CNC Milling Machine and Its Usage Method

Abstract

The present invention relates to the technical field of tool setting devices, and specifically discloses a tool setting device for a CNC milling machine and its usage method, aiming to provide a tool setting device for a CNC milling machine, which includes an instrument housing, a casting base installed inside the instrument housing, an X-axis guide rail, a Y-axis column, and a Y-axis guide rail. The X-axis guide rail is fixedly installed on the top of the casting base, and an X-axis moving seat is slidably installed on the X-axis guide rail. The Y-axis column is fixedly connected to the top of the X-axis moving seat, and the Y-axis guide rail is fixedly connected to the Y-axis column. For this tool setting device for a CNC milling machine and its usage method, the tool setting device of the present invention has high rotation accuracy. The moving axes adopt high-precision lead screws and guide rails for transmission, and grating scales are installed in the moving directions. The display accuracy is 5μm and can be directly read on the display. For a 200mm long standard calibration rod, the full-length direction runout on the tool setting device is controlled within ±0.01mm. In terms of hardware, the cast iron bed body has a stable structure, is suitable for the workshop environment, has a long service life, and low maintenance costs.

Description

Technical Field

[0001] The present invention relates to the technical field of tool setting instruments, and particularly relates to a tool setting instrument for a CNC milling machine and a using method thereof. Background Art

[0002] During the machining process of workpieces, the auxiliary time such as workpiece loading and unloading, tool adjustment, etc. accounts for a quite large proportion in the machining cycle. Among them, tool adjustment is time-consuming and laborious, not easy to be accurate, and finally trial cutting is also required. Statistical data shows that for the machining of a workpiece, the pure machine operation time only accounts for about 55% of the total time, and the auxiliary time such as clamping and tool setting accounts for 45%. Therefore, the tool setting instrument shows great superiority. With the development of production and science and technology, mechanical products are becoming more and more precise, complex and frequently modified, and single-piece and small-batch products account for more than 70%. A product that can quickly measure the diameter and length of the tool of a CNC boring and milling machine and can adjust the equal height of the cutter teeth of a large-diameter milling cutter is very important.

[0003] For example, the Chinese invention patent with the publication number of CN108145529A discloses a tool setting instrument for a machining center, which includes a probe holder. Two parallel probe guide rails are installed on the probe holder; a probe fixing bracket and a digital display screen are arranged on the probe guide rails; the probe fixing bracket fixes the probe on the digital display screen; the probe fixing bracket moves on the guide rail through a moving handwheel; a tool fixing seat is arranged on one side of the probe holder, and the tool to be measured is installed on the tool fixing seat; a turbine is arranged at the bottom of the tool fixing seat, and the turbine is connected with a driving worm; a tool rotating handwheel is connected with the driving worm, and the tool fixing seat is driven by the turbine at the bottom of the tool fixing seat to enable the tool fixing seat to rotate circumferentially forward or backward; the bottom of the probe holder is connected with a driving lead screw, and a probe movement handwheel is connected with the probe driving lead screw to drive the probe to perform a linear movement on the probe movement dovetail guide rail. This traditional tool setting instrument for a machining center detects the tool head by controlling the movement of relevant mechanisms. Although the cost can be reduced, the accuracy of the tool head detection data is greatly sacrificed, and at the same time, the tool setting efficiency is also greatly reduced, and the stability of the equipment during the tool setting work cannot be guaranteed, which will then affect the accuracy of the measurement data. Therefore, it is necessary to design a tool setting instrument for a CNC milling machine and a using method thereof to solve the problems raised above. Summary of the Invention

[0004] The purpose of the present invention is to provide a tool setting instrument for a CNC milling machine and a using method thereof to solve the problems raised in the above background art. The present invention provides the following technical solutions:

[0005] A tool setter for a CNC milling machine, comprising an instrument housing, a casting base installed inside the instrument housing, an X-axis guide rail, a Y-axis column, and a Y-axis guide rail. The X-axis guide rail is fixedly installed on the top of the casting base, and an X-axis moving seat is slidably installed on the X-axis guide rail. The Y-axis column is fixedly connected to the top of the X-axis moving seat, and the Y-axis guide rail is fixedly connected to the Y-axis column. A Y-axis moving seat is slidably installed on the Y-axis guide rail. A gauge support is fixedly installed on the Y-axis moving seat by screws. A height micrometer and a diameter micrometer are installed on the gauge support. A positioning cone sleeve is inlaid on the left side of the top of the instrument housing, and a display is fixedly installed on the front of the instrument housing.

[0006] Preferably, the top end of the Y-axis column is fixedly connected with an adapter cover plate, and a vertical shell is fixedly installed on the adapter cover plate. The vertical shell wraps the Y-axis column. A Y-axis transmission screw is rotatably installed between the adapter cover plate and the X-axis moving seat. A Y-axis quick movement handle is provided on the Y-axis moving seat, and the other end of the Y-axis quick movement handle passes through the Y-axis moving seat and is installed with a Y-axis nut fine adjustment head. The threaded end of the Y-axis nut fine adjustment head meshes with the Y-axis transmission screw. A counterweight block is fixedly connected to the end of the Y-axis moving seat away from the gauge support.

[0007] Preferably, two symmetrically arranged bearing seats are fixedly installed on the top of the casting base, and an X-axis transmission screw is rotatably connected between the two bearing seats. An X-axis quick movement handle is provided on the X-axis moving seat, and the other end of the X-axis quick movement handle passes through the X-axis moving seat and is installed with an X-axis nut fine adjustment head. The threaded end of the X-axis nut fine adjustment head meshes with the X-axis transmission screw. The right end of the X-axis transmission screw and the top end of the Y-axis transmission screw are both fixedly connected with fine adjustment handles.

[0008] Preferably, an X-axis grating parallel to the X-axis guide rail is fixedly connected to the top of the casting base, and a Y-axis grating parallel to the Y-axis guide rail is fixedly installed on the Y-axis column. An opening a is formed on the right side of the top of the instrument housing, and the X-axis moving seat slides in the opening a. An X-axis bellows is fixedly connected to the side of the X-axis moving seat, and the other side of the X-axis bellows is connected to the side wall of the opening a. An opening b is formed on the vertical shell, and the Y-axis moving seat slides in the opening b. Y-axis bellows are fixedly connected to both the upper and lower surfaces of the Y-axis moving seat, and the other side of the Y-axis bellows is fixed to the inner wall of the opening b.

[0009] Preferably, a positioning cylinder is fixedly installed inside the instrument housing, and the positioning cylinder is located inside the positioning cone sleeve. The central axis of the positioning cylinder coincides with the central axis of the positioning cone sleeve. An electric telescopic rod is fixedly installed on the inner bottom wall of the positioning cylinder, and the output end of the electric telescopic rod is fixedly connected with a limiting plate. The limiting plate slides in the positioning cylinder, and two symmetrically arranged spring steel clamps are fixedly connected to the top surface of the limiting plate. The top ends of the spring steel clamps extend outside the positioning cylinder and are bent as required.

[0010] Preferably, a suction cylinder is embedded at the bottom of the instrument housing, and a moving piston is hermetically and slidably connected inside the suction cylinder. A sealing ring is connected to the side of the moving piston. A guide rail is fixedly connected inside the instrument housing, and a linkage rack b is slidably mounted on the guide rail. A connecting rod is fixedly connected below the linkage rack b, and the other end of the connecting rod is fixedly connected to the moving piston. A fixed ring is fixedly connected to the inner wall of the suction cylinder, and a permanent magnet ring is embedded at the top of the fixed ring. A permanent magnet piece is embedded at the bottom of the moving piston, and the permanent magnet piece and the permanent magnet ring repel each other magnetically. A transmission assembly is provided inside the instrument housing and is matched with the linkage rack b.

[0011] Preferably, the transmission assembly includes a linkage rack a, a transmission gear, and a movable opening. Movable openings are provided on the right sides of the positioning cylinder and the positioning cone sleeve. The right side of the limiting plate is fixedly connected to the linkage rack a, and the other end of the linkage rack a penetrates through the movable opening and extends into the movable cavity of the instrument housing. The transmission gear is rotatably mounted in the movable cavity of the instrument housing through a transmission shaft, and the transmission gear meshes with the linkage rack a and the linkage rack b respectively. The moving directions of the linkage rack a and the linkage rack b are opposite.

[0012] Preferably, two carrying handles are fixedly connected to both sides of the instrument housing, and a rotating disc is sleeved on the positioning cone sleeve.

[0013] A method for using a tool setter of a CNC milling machine includes the following steps:

[0014] Step 1: Plug the tool setter into the power supply, and the control screen on the display enters the self-start state. Take the calibration rod and gently place it into the positioning cone sleeve, and rotate it left and right to make the calibration rod stick firmly.

[0015] Step 2: Measure the outer diameter, adjust the position and height of the dial gauge support, measure the diameter with a diameter micrometer in the horizontal direction, zero the display on the display, and remove the calibration rod.

[0016] Step 3: Assemble the tool holder to be measured, and measure and calculate the diameter of the tool disc.

[0017] Step 4: Measure the height, measure with a height micrometer in the height direction, and finally calculate the length of the tool holder.

[0018] The beneficial effects of the present invention are:

[0019] (1) The tool setting instrument for CNC milling machines and its use method. The tool setting instrument of the present invention is a contact type tool setting instrument, which can measure the diameter and tool length of the CNC boring and milling machine tool and can adjust the height of the large milling cutter teeth. It is easy to operate and has strong versatility. It is suitable for all Morse tool holders (BT50, BT40, BT30) of the machining center. The main machine comes with a (BT40) taper sleeve. If it is necessary to measure the BT40 or BT30 tool holder, the customer can purchase the corresponding taper sleeve conversion part and the corresponding calibration rod together when selecting the tool.

[0020] (2) The tool setting instrument for a CNC milling machine and its use method. The tool setting instrument of the present invention has high rotation accuracy. The moving axis adopts high-precision screw and guide rail transmission. A grating ruler is installed in the moving direction. The display accuracy is 5μm and can be read directly on the display. The full-length direction runout of the 200mm long standard calibration rod on the tool setting instrument is controlled within ±0.01mm. In terms of hardware, the cast iron bed has a stable structure suitable for the workshop environment, long service life and low maintenance cost.

[0021] (3) The tool setting instrument and use method of the CNC milling machine are as follows: insert the lower end of the tool handle into the positioning cone sleeve so that the lower end of the tool handle is against the limit plate, and the spring steel clamp is used to limit the tool handle. The electric telescopic rod is turned on to move the limit plate and the spring steel clamp downward to a suitable position. Under the restriction of the positioning cylinder, the spring steel clamps on both sides are retracted and hook the lower end of the tool handle so that the tool handle is firmly fixed in the positioning cylinder to avoid the tool handle from loosening during detection and affecting the detection result.

[0022] (4) The tool setting instrument for CNC milling machine and its use method: during the process of fixing the tool handle, the limit plate drives the linkage rack a to move downward, and under the linkage of the transmission gear, the linkage rack b slides upward along the guide rail, and then the connecting rod pulls the moving piston to slide upward in the suction cylinder, so that the suction cylinder is in a negative pressure state, so that the instrument cover is stably adsorbed on the workbench or other reference objects, thereby ensuring the stability of the tool setting instrument during operation and avoiding contact and displacement to cause measurement errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the description of the specific implementation methods will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a three-dimensional diagram of the overall structure of the present invention;

[0025] Figure 2 It is a front view of the structure of the present invention;

[0026] Figure 3 It is a side view of the structure of the present invention;

[0027] Figure 4 It is the top view of the structure of the present invention;

[0028] Figure 5 It is the structure of the present invention Figure 1 The perspective view after removing the instrument housing and the vertical housing;

[0029] Figure 6 It is the structure of the present invention Figure 5 The perspective view from another angle;

[0030] Figure 7 It is the structure of the present invention Figure 5 The front view;

[0031] Figure 8 It is the structure of the present invention Figure 5 The rear view;

[0032] Figure 9 It is the structure of the present invention Figure 5 The side view;

[0033] Figure 10 It is the structure of the present invention Figure 5 The top view;

[0034] Figure 11 It is the perspective view of the casting base of the structure of the present invention;

[0035] Figure 12 It is the sectional view of the instrument housing of the structure of the present invention after assembling the tool shank;

[0036] Figure 13 It is the sectional view of the suction cylinder of the structure of the present invention;

[0037] Figure 14 It is the structure of the present invention Figure 12 The schematic diagram in another state.

[0038] The reference signs are as follows:

[0039] 1. Instrument housing; 101. Vertical housing; 2. Casting base; 3. X-axis guide rail; 4. X-axis moving seat; 5. X-axis drive screw; 6. Y-axis column; 7. Connecting cover plate; 8. Y-axis guide rail; 9. Y-axis moving seat; 10. Gauge bracket; 11. Height micrometer; 12. Diameter micrometer; 13. Positioning cone sleeve; 14. Y-axis drive screw; 15. Counterweight; 16. Fine adjustment handle; 17. X-axis rapid traverse handle; 171. X-axis nut fine adjustment head; 18. Y-axis rapid traverse handle; 181. Y-axis nut fine adjustment head; 19. X-axis grating; 20. Y-axis grating; 21. Display; 22. Rotary disk; 23. Handling handle; 24. Bearing seat; 25. X-axis bellows cover; 26. Y-axis bellows cover; 27. Positioning cylinder; 28. Electric telescopic rod; 29. Limit plate; 30. Spring steel clamp; 31. Linkage rack a; 32. Transmission gear; 33. Suction cylinder; 34. Linkage rack b; 35. Guide rail; 36. Moving piston; 37. Fixed ring; 38. Permanent magnet piece; 39. Permanent magnet ring. Detailed implementation manners

[0040] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0041] Refer to Figure 1-14 As shown, the present invention provides the following specific embodiments:

[0042] Embodiment 1

[0043] A tool setter for a CNC milling machine includes an instrument housing 1, a casting base 2 installed in the instrument housing 1, an X-axis guide rail 3, a Y-axis column 6, and a Y-axis guide rail 8. The X-axis guide rail 3 is fixedly installed on the top of the casting base 2, and an X-axis moving seat 4 is slidably installed on the X-axis guide rail 3. The Y-axis column 6 is fixedly connected to the top of the X-axis moving seat 4, and the Y-axis guide rail 8 is fixedly connected to the Y-axis column 6. A Y-axis moving seat 9 is slidably installed on the Y-axis guide rail 8. A gauge bracket 10 is fixedly installed on the Y-axis moving seat 9 by screws, and a height micrometer 11 and a diameter micrometer 12 are installed on the gauge bracket 10. A positioning cone sleeve 13 is inlaid on the left side of the top of the instrument housing 1, and a display 21 is fixedly installed on the front of the instrument housing 1. The control buttons on the display 21 are used to control the test calibration rod and the tool holder.

[0044] Further, a connection cover plate 7 is fixedly connected to the top end of the Y-axis column 6, and a vertical shell 101 is fixedly installed on the connection cover plate 7. The vertical shell 101 wraps the Y-axis column 6. A Y-axis transmission screw rod 14 is rotatably installed between the connection cover plate 7 and the X-axis moving seat 4. A Y-axis quick movement handle 18 is provided on the Y-axis moving seat 9, and the other end of the Y-axis quick movement handle 18 passes through the Y-axis moving seat 9 and is installed with a Y-axis nut fine adjustment head 181. The threaded end of the Y-axis nut fine adjustment head 181 meshes with the Y-axis transmission screw rod 14. A counterweight 15 is fixedly connected to the end of the Y-axis moving seat 9 away from the table support 10.

[0045] Further, two symmetrically arranged bearing seats 24 are fixedly installed on the top of the casting base 2, and an X-axis transmission screw rod 5 is rotatably connected between the two bearing seats 24. An X-axis quick movement handle 17 is provided on the X-axis moving seat 4, and the other end of the X-axis quick movement handle 17 penetrates through the X-axis moving seat 4 and is installed with an X-axis nut fine adjustment head 171. The threaded end of the X-axis nut fine adjustment head 171 meshes with the X-axis transmission screw rod 5. Fine adjustment handles 16 are fixedly connected to the right end of the X-axis transmission screw rod 5 and the top end of the Y-axis transmission screw rod 14 respectively, and the fine adjustment handles 16 are used to control the moving accuracy of the X-axis moving seat 4 and the Y-axis moving seat 9.

[0046] Further, an X-axis grating 19 parallel to the X-axis guide rail 3 is fixedly connected to the top of the casting base 2, and a Y-axis grating 20 parallel to the Y-axis guide rail 8 is fixedly installed on the Y-axis column 6. A sealing opening a is formed on the right side of the top of the instrument housing 1, and the X-axis moving seat 4 slides in the sealing opening a. An X-axis bellows 25 is fixedly connected to the side surface of the X-axis moving seat 4, and the other side of the X-axis bellows 25 is connected to the side wall of the sealing opening a. A sealing opening b is formed on the vertical shell 101, and the Y-axis moving seat 9 slides in the sealing opening b. Y-axis bellows 26 are fixedly connected to both the upper and lower surfaces of the Y-axis moving seat 9, and the other side of the Y-axis bellows 26 is fixed to the inner wall of the sealing opening b. The assembly of the X-axis bellows 25 and the Y-axis bellows 26 makes the movement of the X-axis moving seat 4 and the Y-axis moving seat 9 smoother, with high precision and no noise.

[0047] Further, two handling handles 23 are fixedly connected to both sides of the instrument housing 1, and a rotating disk 22 is sleeved on the positioning cone sleeve 13.

[0048] A usage method of a tool setting gauge for a CNC milling machine includes the following steps:

[0049] Step 1: Plug the tool setting gauge into the power supply, and the control screen on the display 21 enters the self-start state. Take the calibration rod and gently place it into the positioning cone sleeve 13, and rotate it left and right to make the calibration rod stick firmly.

[0050] Step 2: Measure the outer diameter. Adjust the position and height of the table support 10, measure the diameter with the diameter micrometer 12 in the horizontal direction, zero the display on the display 21, and remove the calibration rod.

[0051] Step 3: Assemble the tool holder to be measured, measure and calculate the cutter head diameter;

[0052] Step 4: Measure the height, measure it with the height micrometer 11 in the height direction, and finally calculate the length of the tool holder.

[0053] The specific implementation method of this embodiment is as follows: Plug the equipment into the power supply, and the control screen on the display 21 enters the self-start state. Take out the calibration rod from the calibration rod box, wipe the calibration rod clean with a lint-free cloth dipped in alcohol; gently place it into the positioning taper sleeve 13, and rotate it left and right to make the calibration rod stick firmly but not too tightly. If the calibration rod is too tight with the positioning taper sleeve 13, it means that there is dust on the two mating surfaces.

[0054] When measuring the outer diameter, unscrew the height micrometer 11 in the height direction, measure the diameter with the diameter micrometer 12 in the horizontal direction on the side, move the Y-axis moving seat 9 and fix it at a suitable height, pull the Y-axis quick-movement handle 18 to quickly move the gauge support 10, and rotate the fine-tuning handle 16 to fine-tune to a suitable position; Move the X-axis moving seat 4 in the same way as the Y-axis above. When the diameter micrometer 12 is close to the calibration rod, use the fine-tuning handle 16 to fine-tune the gauge support 10 to make the diameter micrometer 12 have a certain compression amount and adjust the pointer to the zero position. Press the X0 button on the display screen to make the display return to zero, move the X-axis moving seat 4 away, remove the calibration rod, install the tool holder to be measured, move the X-axis moving seat 4 to make the measuring head of the diameter micrometer 12 close to the tip of the tool holder, and make the gauge pointer point to the zero position (the position when calibrating the calibration rod, the same number of turns of the compression amount),

[0055] The value displayed on the display 21 is X1, the diameter of the calibration rod is D, and the radius of the tool holder is R;

[0056] Among them, R = D / 2 + X1.

[0057] At this time, rotate the tool holder, and it can be seen that the tip of the tool holder swings left and right across the measuring head pointer. The larger the swing, the more uneven the installation of the tool tip or there is blade wear. When calculating the cutter head diameter, the height difference of the tool tip during rotation should be considered, and a number greater than or equal to 0 is taken as the radius compensation amount.

[0058] When measuring the height, rotate the height micrometer 11 in the height direction, and the horizontal diameter micrometer 12 remains unchanged. First, move the Y-axis column 6 away to prevent the gauge from being damaged when installing the calibration rod and the tool holder. Use the height micrometer 11 in the height direction to calibrate the height of the calibration rod and zero the Y-direction data;

[0059] Replace it with the tool holder to be measured, move the Y-axis moving seat 9 to make the height micrometer 11 contact to make the pointer zero. The data displayed on the display 21 is Y1, the standard length of the calibration rod is L, and the length of the tool holder is L1;

[0060] Among them, L1 = L + Y1.

[0061] After use, wipe the calibration rod clean, spray it with anti-rust oil and put it into the calibration rod box. Rotate the positioning sleeve, wipe it clean, spray it with anti-rust oil, and cover the tool setter with an external protective cover to protect it from dust.

[0062] Embodiment 2

[0063] The difference from Embodiment 1 is that it further includes the following content:

[0064] A positioning cylinder 27 is fixedly installed inside the instrument housing 1, and the positioning cylinder 27 is located inside the positioning cone sleeve 13. The central axis of the positioning cylinder 27 coincides with the central axis of the positioning cone sleeve 13. An electric telescopic rod 28 is fixedly installed on the inner bottom wall of the positioning cylinder 27, and the output end of the electric telescopic rod 28 is fixedly connected with a limiting plate 29. The limiting plate 29 slides inside the positioning cylinder 27, and two symmetrically arranged spring steel clamps 30 are fixedly connected to the top surface of the limiting plate 29. The top ends of the spring steel clamps 30 extend outside the positioning cylinder 27 and are bent as set.

[0065] Furthermore, a suction cylinder 33 is embedded at the bottom of the instrument housing 1, and a moving piston 36 is hermetically slidably connected inside the suction cylinder 33. A sealing ring is connected to the side of the moving piston 36. A guide rail 35 is fixedly connected inside the instrument housing 1, and a linkage rack b 34 is slidably installed on the guide rail 35. A connecting rod is fixedly connected below the linkage rack b 34, and the other end of the connecting rod is fixedly connected with the moving piston 36. A fixing ring 37 is fixedly connected to the inner wall of the suction cylinder 33, and a permanent magnet ring 39 is embedded at the top of the fixing ring 37. A permanent magnet piece 38 is embedded at the bottom of the moving piston 36, and the permanent magnet piece 38 and the permanent magnet ring 39 are magnetically repulsive, so that the moving piston 36 does not contact the fixing ring 37, leaving a suction cavity. A transmission component that cooperates with the linkage rack b 34 is provided inside the instrument housing 1. To ensure stable adsorption, a rubber and plastic sealing ring can be connected to the bottom surface of the suction cylinder 33.

[0066] Furthermore, the transmission component includes a linkage rack a 31, a transmission gear 32, and a movable opening. Movable openings are provided on the right sides of both the positioning cylinder 27 and the positioning cone sleeve 13. The linkage rack a 31 is fixedly connected to the right side of the limiting plate 29, and the other end of the linkage rack a 31 penetrates through the movable opening and extends into the movable cavity of the instrument housing 1. The transmission gear 32 is rotatably installed in the movable cavity of the instrument housing 1 through a transmission shaft, and the transmission gear 32 meshes with the linkage rack a 31 and the linkage rack b 34 respectively. The moving directions of the linkage rack a 31 and the linkage rack b 34 are opposite.

[0067] In this embodiment: Insert the lower end of the tool holder into the positioning taper sleeve 13, make the lower end of the tool holder abut against the limiting plate 29, limit the tool holder with the spring steel clamp 30, turn on the electric telescopic rod 28, and move the limiting plate 29 and the spring steel clamp 30 downward to a proper position. Under the restriction of the positioning cylinder 27, the two spring steel clamps 30 are closed to hook the lower end of the tool holder, so that the tool holder is firmly fixed in the positioning cylinder 27, avoiding loosening of the tool holder during detection and affecting the detection result;

[0068] When removing the tool holder, turn on the electric telescopic rod 28 again to move the limiting plate 29 and the spring steel clamp 30 upward to reset. When the spring steel clamp 30 is disengaged from the positioning cylinder 27, under the action of its elastic performance, it returns to its original state (releasing the clamping of the tool holder), automatically releasing the fixation of the tool holder, and then the tool holder can be lifted upward;

[0069] During the process of fixing the tool holder, the limiting plate 29 drives the linkage rack a31 to move downward. Under the linkage of the transmission gear 32, the linkage rack b34 slides upward along the guide rail 35, and then the connecting rod 341 pulls the moving piston 36 to slide upward in the suction cylinder 33, making the inside of the suction cylinder 33 in a negative pressure state, so that the instrument housing 1 is firmly adsorbed on the workbench or other placement references, ensuring the stability of the tool setter during work and avoiding measurement errors caused by displacement due to touching;

[0070] Similarly, when releasing the fixation of the tool holder, the electric telescopic rod 28 drives the limiting plate 29 and the linkage rack a31 to move upward, causing the linkage rack b34 and the connecting rod 341 to move downward to release the negative pressure state of the suction cylinder 33, making it convenient to shift or carry without installing the tool holder, which is flexible and reliable.

[0071] Key points to note for the tool setter designed by the present invention:

[0072] 1. When the runout of the tool setter becomes larger, check whether the calibration rod or the tool holder is installed in place and whether the spindle taper sleeve is not clean, there is dust on the contact surface. Wipe each part with alcohol, dry it, put it into the spindle taper sleeve and measure again.

[0073] 2. The spindle taper sleeve must be cleaned thoroughly and coated with clean anti-rust oil;

[0074] 3. The test rod must be wiped clean and coated with clean anti-rust oil;

[0075] 4. After use, please keep it clean and promptly remove sundries, dust, iron filings, etc.;

[0076] 5. Clean the outer cover of the tool setter every day;

[0077] 6. Please must use clean anti-rust oil, and remember not to use gasoline, acetone solvents;

[0078] 7. Wrap it with a protective cover when not in use.

[0079] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation manners. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and utilize the present invention well. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A tool setter for a CNC milling machine, comprising an instrument housing (1), a casting base (2) installed inside the instrument housing (1), an X-axis guide rail (3), a Y-axis column (6), and a Y-axis guide rail (8), characterized in that: the X-axis guide rail (3) is fixedly installed on the top of the casting base (2), and an X-axis moving seat (4) is slidably installed on the X-axis guide rail (3), the Y-axis column (6) is fixedly connected to the top of the X-axis moving seat (4), and the Y-axis guide rail (8) is fixedly connected to the Y-axis column (6), a Y-axis moving seat (9) is slidably installed on the Y-axis guide rail (8), a dial support (10) is fixedly installed on the Y-axis moving seat (9) by screws, a height micrometer (11) and a diameter micrometer (12) are installed on the dial support (10), a positioning cone sleeve (13) is inlaid on the left side of the top of the instrument housing (1), and a display (21) is fixedly installed on the front of the instrument housing (1); A positioning cylinder (27) is fixedly installed inside the instrument housing (1), and the positioning cylinder (27) is located inside the positioning cone sleeve (13). The central axis of the positioning cylinder (27) coincides with the central axis of the positioning cone sleeve (13). An electric telescopic rod (28) is fixedly installed on the inner bottom wall of the positioning cylinder (27), and the output end of the electric telescopic rod (28) is fixedly connected to a limiting plate (29). The limiting plate (29) slides inside the positioning cylinder (27), and the top surface of the limiting plate (29) is fixedly connected to two symmetrically arranged spring steel clamps (30). The top ends of the spring steel clamps (30) extend outside the positioning cylinder (27) and are bent; A suction cylinder (33) is inlaid at the bottom of the instrument housing (1), and a moving piston (36) is hermetically slidably connected inside the suction cylinder (33). A sealing ring is connected to the side surface of the moving piston (36). A guide rail (35) is fixedly connected inside the instrument housing (1), and a linkage rack b (34) is slidably installed on the guide rail (35). A connecting rod is fixedly connected below the linkage rack b (34), and the other end of the connecting rod is fixedly connected to the moving piston (36). A fixing ring (37) is fixedly connected to the inner wall of the suction cylinder (33), and a permanent magnet ring (39) is inlaid on the top of the fixing ring (37). A permanent magnet piece (38) is inlaid at the bottom of the moving piston (36), and the permanent magnet piece (38) is magnetically repulsive to the permanent magnet ring (39). A transmission component matching with the linkage rack b (34) is arranged inside the instrument housing (1); The transmission assembly includes a linkage rack a (31), a transmission gear (32) and a movable opening. Movable openings are provided on the right sides of the positioning cylinder (27) and the positioning cone sleeve (13). The right side of the limit plate (29) is fixedly connected to the linkage rack a (31), and the other end of the linkage rack a (31) penetrates through the movable opening and extends into the movable cavity of the instrument housing (1). The transmission gear (32) is rotatably installed in the movable cavity of the instrument housing (1) through a transmission shaft, and the transmission gear (32) meshes with the linkage rack a (31) and the linkage rack b (34) respectively. The moving directions of the linkage rack a (31) and the linkage rack b (34) are opposite to each other.

2. The tool setter for CNC milling machine according to claim 1, characterized in that: The top end of the Y-axis column (6) is fixedly connected with an adapter cover plate (7), and a vertical housing (101) is fixedly installed on the adapter cover plate (7). The vertical housing (101) wraps the Y-axis column (6). A Y-axis transmission screw rod (14) is rotatably installed between the adapter cover plate (7) and the X-axis moving seat (4). A Y-axis quick movement handle (18) is provided on the Y-axis moving seat (9), and the other end of the Y-axis quick movement handle (18) passes through the Y-axis moving seat (9) and is installed with a Y-axis nut fine adjustment head (181). The threaded end of the Y-axis nut fine adjustment head (181) meshes with the Y-axis transmission screw rod (14). One end of the Y-axis moving seat (9) away from the meter support (10) is fixedly connected with a counterweight (15).

3. The tool setter for CNC milling machine according to claim 2, characterized in that: Two symmetrically arranged bearing seats (24) are fixedly installed on the top of the casting base (2), and an X-axis transmission screw rod (5) is rotatably connected between the two bearing seats (24). An X-axis quick movement handle (17) is provided on the X-axis moving seat (4), and the other end of the X-axis quick movement handle (17) penetrates through the X-axis moving seat (4) and is installed with an X-axis nut fine adjustment head (171). The threaded end of the X-axis nut fine adjustment head (171) meshes with the X-axis transmission screw rod (5). Fine adjustment handles (16) are fixedly connected to the right end of the X-axis transmission screw rod (5) and the top end of the Y-axis transmission screw rod (14).

4. A tool setter for a CNC milling machine according to claim 3, characterized in that: An X-axis grating (19) parallel to the X-axis guide rail (3) is fixedly connected to the top of the casting base (2). A Y-axis grating (20) parallel to the Y-axis guide rail (8) is fixedly installed on the Y-axis column (6). An opening a is provided on the right side of the top of the instrument housing (1), and the X-axis moving seat (4) slides in the opening a. An X-axis bellows (25) is fixedly connected to the side surface of the X-axis moving seat (4), and the other side of the X-axis bellows (25) is connected to the side wall of the opening a. An opening b is provided on the vertical housing (101), and the Y-axis moving seat (9) slides in the opening b. Y-axis bellows (26) are fixedly connected to the upper and lower surfaces of the Y-axis moving seat (9), and the other side of the Y-axis bellows (26) is fixed to the inner wall of the opening b.

5. A tool setter for a CNC milling machine according to claim 1, characterized in that: Both sides of the instrument housing (1) are fixedly connected with two handling handles (23), and a rotating disc (22) is sleeved on the positioning cone sleeve (13).

6. The method for using a tool setter of a CNC milling machine according to claim 1, wherein: It includes the following steps: Step 1: Plug the tool setter into the power supply, the control screen on the display (21) enters the self-start state, take the calibration rod and gently place it into the positioning cone sleeve (13), and rotate it left and right to make the calibration rod stick firmly; Step 2: Measure the outer diameter, adjust the position and height of the dial gauge support (10), measure the diameter with the diameter micrometer (12) in the horizontal direction, zero the display on the display (21), and remove the calibration rod; Step 3: Assemble the tool holder to be measured, measure and calculate the diameter of the tool disc; Step 4: Measure the height, measure with the height micrometer (11) in the height direction, and finally calculate the length of the tool holder.

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