A five-axis tool setting device for CNC machine tools

Abstract

A five-axis tool setting device for a numerically controlled machine tool comprises: a stylus, a trigger swing assembly, an elastic testing assembly, a circuit board, and a housing. The trigger swing assembly comprises a swing rotating body, a plunger, a first spring, and a lifting contact rod. The elastic testing assembly comprises a connector, N first metal balls, a second metal ball, and a second spring. When the first and second metal balls come into contact, the circuit is connected. The stylus is subjected to force to rotate the swing rotating body, and the lifting contact rod lifts the second metal ball. In this process, any first metal ball is separated from the second metal ball, thereby disconnecting the power supply, outputting a tool setting signal, and completing the five-axis tool setting operation. A limit assembly can also be provided to improve the position stability of the corresponding structure, thereby improving the stability of the tool setting accuracy. In addition, the position of the tool setting device can be adjusted between the use and non-use states, and the screw extrusion fixing method facilitates the replacement of the tool setting device.

Description

Technical Field

[0001] The present invention relates to the technical field of numerical control machine tool processing, in particular to a five-axis tool setting device for a numerical control machine tool. Background Art

[0002] A CNC machine tool is an automated machine tool equipped with a program control system that can operate and process parts according to a pre-programmed program. CNC machine tools integrate the latest technologies in mechanics, automation, computers, measurement, microelectronics, and use a variety of sensors. The position detection of machining tools during replacement, installation, and tool wear requires manual or mechanical measurement, resulting in low accuracy and a long measurement cycle. Technicians in this field are developing various five-axis tool setting devices for CNC machine tools to address the above-mentioned shortcomings. However, due to unreasonable structural settings, tool setting accuracy cannot be guaranteed, which in turn affects the accuracy of CNC machining and results in unstable performance. Furthermore, tool setting devices in the existing technology can only achieve tool setting at four angles on a plane, which has limitations in tool setting orientation in actual use. Furthermore, tool setting devices generally require threaded holes to be machined on the outer casing for fixing, making replacement procedures cumbersome.

[0003] The present invention provides a five-axis tool setting device for a CNC machine tool to solve the above technical problems. Summary of the Invention

[0004] A five-axis tool setting device for a CNC machine tool includes a stylus, a trigger swing assembly, an elastic test assembly, a circuit board, and a housing. The stylus is connected to the trigger swing assembly, the trigger swing assembly is electrically conductive with the elastic test assembly, one end of the elastic test assembly is electrically connected to the circuit board, and the trigger swing assembly is directly or indirectly connected to the housing via an elastic member. The trigger swing assembly, the elastic test assembly, and the circuit board are all arranged inside the housing, the circuit board is directly or indirectly fixed to the housing, the lower plate surface of the housing is processed with a hole for a wire to pass through, and an external power supply is connected to the circuit board via a wire.

[0005] Preferably, in the five-axis tool setting device of a CNC machine tool, the trigger swing assembly includes a swing rotating body, a plug body, a first spring, and a lifting touch rod, the swing rotating body is connected to the contact pin, the plug body is fixed in the rotating body space of the swing rotating body, the lifting touch rod is fixed to the plug body, and the two ends of the first spring are directly or indirectly connected to the plug body and the outer shell respectively, to realize the elastic connection between the trigger swing assembly and the outer shell, and the lifting touch rod controls the on-off of the circuit in the elastic test assembly by lifting and lowering.

[0006] Preferably, in the five-axis tool setting device of a CNC machine tool, the elastic testing assembly includes a connector, N first metal balls, a second metal ball, and a second spring. The first metal ball is fixed to the end of the connector, the second metal ball is fixed to the end of the second spring, the second metal ball is in contact with N first metal balls arranged at equal angles, and the end of the connector is directly or indirectly electrically connected to the circuit board, where N is a natural number greater than or equal to 2.

[0007] Preferably, in the five-axis tool setting device for a CNC machine tool, the elastic testing assembly also includes a fixed seat, a center blind hole is processed in the center of the fixed seat, the second spring passes through the center blind hole and one end is fixed to the fixed seat, N connector mounting holes arranged at equal angles are processed with the center blind hole as the center, N connectors are installed in the connector mounting holes, and the first metal ball and the second metal ball both extend out of the lower end surface of the fixed seat.

[0008] Preferably, the five-axis tool setting device for a CNC machine tool further includes a limit assembly, the limit assembly including a limit sleeve and a limit ring, the limit sleeve is fixed to the limit ring, the limit ring is processed with N metal ball limit holes connected to the inner ring wall, the N first metal balls are located in the metal ball limit holes, the limit sleeve is connected to the outer shell, and one end of the first spring is sleeved on the outside of the limit sleeve.

[0009] Preferably, in the five-axis tool setting device of a CNC machine tool, the limiting assembly also includes an upper positioning pin, a first positioning hole, and a second positioning hole. The first positioning holes are respectively processed on the upper plate surfaces of the fixing seat and the limiting sleeve, and the second positioning holes are processed on the board surface of the circuit board. The upper end of the upper positioning pin is located in the second positioning hole, and the lower end of the upper positioning pin passes through the second positioning hole on the board surface of the fixing seat and the limiting sleeve.

[0010] Preferably, in the five-axis tool setting device of a CNC machine tool, the limiting assembly also includes a lower positioning pin, the lower plate surface of the fixed seat and the plate surface of the limiting ring are both processed with a third positioning hole, and the two ends of the lower positioning pin are respectively located in the third positioning holes of the fixed seat and the limiting ring.

[0011] Preferably, the five-axis tool setting device for a CNC machine tool further includes a gyro-shaped buffer sealing sleeve, which is sleeved on the outside of the swinging and rotating body, and the swinging and rotating body is located between the swinging and rotating body and the outer shell.

[0012] Preferably, in the five-axis tool setting device for a CNC machine tool, limit grooves are processed on both sides of the swinging and rotating body, and a limit rod is welded and fixed on the inner wall of the corresponding shell, and one end of the limit rod extends into the limit groove, which plays a limiting role on the swinging and lifting stroke of the swinging and rotating body during the tool setting process.

[0013] Preferably, the five-axis tool setting device for a CNC machine tool further includes a mounting frame assembly, the mounting frame assembly including a fixed base, a rotating motor, a curved arm, and a shell mounting seat, the rotating motor is installed in the fixed base, the power output end of the rotating motor is fixedly connected to one end of the curved arm, the other end of the curved arm is connected to the shell mounting seat, the shell is fixed in the shell mounting seat, both sides of the shell are machined with planes, the corresponding positions of the shell mounting seat are machined with threaded holes, the screws are screwed into the threaded holes of the shell mounting seat and rest against the plane to complete the assembly of the shell and the shell mounting seat.

[0014] Working principle: The circuit board is electrically connected to the external power supply, and the first metal ball is electrically connected to the circuit board. When the first metal ball and the second metal ball are in contact, the circuit is turned on. When the stylus contacts the tool, the lifting feeler rotates to separate the second metal ball from one or more surrounding first metal balls, or the lifting feeler rises to separate the second metal ball from all first metal balls. Then, the circuit is disconnected and a tool setting signal is output. In addition to being able to set the tool in four directions (front, back, left, and right) of the plane where the stylus is located, the tool can also be set in a direction perpendicular to the plane, thereby realizing five-axis tool setting.

[0015] The advantages are as follows:

[0016] (1) The five-axis tool setting device for CNC machine tools of the present invention can flexibly change the tool setting accuracy by changing the value of N, N = 3, 4, 5, 6, 7 or 8. As the value of N increases, the tool setting accuracy improves.

[0017] (2) The five-axis tool setting device for CNC machine tools of the present invention realizes the on-off of the circuit by the contact and separation of the first metal ball and the second metal ball, thereby generating the output of the tool setting signal and realizing the five-axis tool setting process;

[0018] (3) The five-axis tool setting device of the CNC machine tool involved in the present invention is provided with a limit assembly. The control structure corresponding to the on-off of the tool setting circuit can ensure the stability of the structural position under the limitation of the limit assembly, thereby ensuring the stability of the tool setting performance and accuracy;

[0019] (4) The five-axis tool setting device of the CNC machine tool involved in the present invention is installed through a mounting frame assembly. The position of the tool setting device can be adjusted in the use / non-use state, and the screw extrusion fixing method facilitates the replacement of the tool setting device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The specific implementation is further described below with reference to the accompanying drawings, wherein:

[0021] Figure 1 This is a front view of a five-axis tool setting device for a CNC machine tool according to the present invention;

[0022] Figure 2 This is a cross-sectional view of the structure of the five-axis tool setting device for a CNC machine tool according to the present invention after the stylus is removed;

[0023] Figures 3-5 This is a partial structural diagram of a five-axis tool setting device for a CNC machine tool according to the present invention;

[0024] Figure 6 This is the assembly drawing of the five-axis tool setting device and the mounting frame assembly;

[0025] Figure 7 It is an overall schematic diagram of a tool setting device for machining a flat surface on a housing.

[0026] The specific structure corresponding to the number is as follows:

[0027] Stylus 1, trigger swing assembly 2, swing rotating body 21, limiting groove 211, plug body 22, first spring 23, lifting touch rod 24, elastic test assembly 3, connector 31, first metal ball 32, second metal ball 33, second spring 34, fixing seat 35, limiting assembly 4, limiting sleeve 41, limiting ring 42, metal ball limiting hole 421, upper positioning pin 43, first positioning hole 44, second positioning hole 45, lower positioning pin 46, circuit board 5, housing 6, limiting rod 61, plane 62, buffer sealing sleeve 7, mounting bracket assembly 8, fixed base 81, rotating motor 82, bending arm 83, housing mounting seat 84,

[0028] The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0029] Specific implementation case 1:

[0030] A five-axis tool setting device for a CNC machine tool comprises a stylus 1, a trigger swing assembly 2, an elastic test assembly 3, a circuit board 5, and a housing 6. The stylus 1 is connected to the trigger swing assembly 2, the trigger swing assembly 2 is electrically conductive with the elastic test assembly 3, one end of the elastic test assembly 3 is electrically connected to the circuit board 5, and the limit assembly 4 is fixedly connected to the circuit board 5; the trigger swing assembly 2 is directly or indirectly connected to the housing 6 via an elastic member; the trigger swing assembly 2, the elastic test assembly 3, and the circuit board 5 are all arranged inside the housing 6, the circuit board 5 is directly or indirectly fixed to the surface of the housing 6, the lower plate surface of the housing 6 is processed with a hole for the wire to pass through, and an external power supply is connected to the circuit board 5 via a wire.

[0031] The trigger oscillating assembly 2 comprises a rotatable body 21, a plunger 22, a first spring 23, and a lifting contact rod 24. The rotatable body 21 is connected to the stylus 1, the plunger 22 is fixed within the rotating space of the rotatable body 21, and the lifting contact rod 24 is fixed to the plunger 22. The two ends of the first spring 23 are directly or indirectly connected to the plunger 22 and the housing 6, respectively, achieving an indirect elastic connection between the trigger oscillating assembly 2 and the housing 6. The lifting contact rod 24 controls the on / off state of the circuit in the elastic test assembly 3 by lifting and lowering. The elastic test assembly 3 comprises a connector 31, three first metal balls 32, a second metal ball 33, and a second spring 34. The first metal balls 32 are fixed to the ends of the connector 31, and the second metal balls 33 are fixed to the ends of the second spring 34. The second metal balls 33 contact the three first metal balls 32 arranged at equal angles. The ends of the connector 31 are directly or indirectly electrically connected to the circuit board 5.

[0032] Furthermore, the connecting body 31 may be a spring or a metal rod.

[0033] Preferably, the five-axis tool setting device of a CNC machine tool further includes a gyro-shaped buffer sealing sleeve 7, which is sleeved on the outside of the swinging and rotating body 21, and the swinging and rotating body 21 is located between the swinging and rotating body 21 and the outer shell 6.

[0034] The buffer seal sleeve 7 has two functions: on the one hand, it buffers the rotation of the swinging rotating body 21; on the other hand, it plays the role of end sealing.

[0035] Specific implementation case 2:

[0036] A five-axis tool setting device for a CNC machine tool comprises a stylus 1, a trigger swing assembly 2, an elastic test assembly 3, a circuit board 5, and a housing 6. The stylus 1 is connected to the trigger swing assembly 2, the trigger swing assembly 2 is electrically conductive with the elastic test assembly 3, one end of the elastic test assembly 3 is electrically connected to the circuit board 5, and the limit assembly 4 is fixedly connected to the circuit board 5; the trigger swing assembly 2 is directly or indirectly connected to the housing 6 via an elastic member; the trigger swing assembly 2, the elastic test assembly 3, and the circuit board 5 are all arranged inside the housing 6, the circuit board 5 is directly or indirectly fixed to the surface of the housing 6, the lower plate surface of the housing 6 is processed with a hole for the wire to pass through, and an external power supply is connected to the circuit board 5 via a wire.

[0037] The trigger oscillating assembly 2 includes a rotatable body 21, a plunger 22, a first spring 23, and a lifting contact rod 24. The rotatable body 21 is connected to the stylus 1, the plunger 22 is fixed within the rotating space of the rotatable body 21, and the lifting contact rod 24 is fixed to the plunger 22. The two ends of the first spring 23 are directly or indirectly connected to the plunger 22 and the housing 6, respectively, to achieve an indirect elastic connection between the trigger oscillating assembly 2 and the housing 6. The lifting contact rod 24 controls the on / off state of the circuit in the elastic test assembly 3 by lifting. The elastic test assembly 3 includes a connector 31, four first metal balls 32, a second metal ball 33, and a second spring 34. The first metal balls 32 are fixed to the ends of the connector 31, and the second metal balls 33 are fixed to the ends of the second spring 34. The second metal balls 33 contact the four first metal balls 32 arranged at equal angles. The ends of the connector 31 are directly or indirectly electrically connected to the circuit board 5.

[0038] Furthermore, the elastic testing assembly 3 also includes a fixing seat 35, the center of which is processed with a center blind hole, the second spring 34 passes through the center blind hole and one end is fixed to the fixing seat 35, and 6 connector mounting holes arranged at equal angles are processed with the center blind hole as the center, and the 6 connectors 31 are installed in the connector mounting holes, and the first metal ball 32 and the second metal ball 33 both extend out of the lower end surface of the fixing seat 35.

[0039] Furthermore, limiting grooves 211 are processed on both sides of the swinging and rotating body 21, and a limiting rod 61 is welded and fixed to the inner wall of the corresponding shell 6. One end of the limiting rod 61 extends into the limiting groove 211, which limits the swinging and lifting stroke of the swinging and rotating body 21 during the five-way tool setting process.

[0040] Specific implementation case 3:

[0041] A five-axis tool setting device for a CNC machine tool comprises a stylus 1, a trigger swing assembly 2, an elastic test assembly 3, a limit assembly 4, a circuit board 5, and a housing 6. The stylus 1 is connected to the trigger swing assembly 2, the trigger swing assembly 2 is electrically conductive with the elastic test assembly 3, one end of the elastic test assembly 3 is electrically connected to the circuit board 5, and the limit assembly 4 is fixedly connected to the circuit board 5; the trigger swing assembly 2 is directly or indirectly connected to the housing 6 via an elastic member; the trigger swing assembly 2, the elastic test assembly 3, and the circuit board 5 are all arranged inside the housing 6, the circuit board 5 is directly or indirectly fixed to the surface of the housing 6, the lower plate surface of the housing 6 is processed with a hole for a wire to pass through, and an external power supply is connected to the circuit board 5 via a wire.

[0042] Among them, the limiting assembly 4 includes a limiting sleeve 41 and a limiting ring 42. The limiting sleeve 41 is fixed to the limiting ring 42. The limiting ring 42 is processed with 6 metal ball limiting holes 421 connected to the inner ring wall. The 6 first metal balls 32 are located in the metal ball limiting holes 421. The limiting sleeve 41 is connected to the outer shell 6, and one end of the first spring 23 is sleeved on the outside of the limiting sleeve 41 to realize an indirect connection with the outer shell 6.

[0043] Furthermore, the limiting assembly 4 also includes an upper positioning pin 43, a first positioning hole 44, and a second positioning hole 45. The first positioning hole 44 is respectively processed on the upper plate surface of the fixing seat 35 and the limiting sleeve 41, and the second positioning hole 45 is processed on the board surface of the circuit board 5. The upper end of the upper positioning pin 43 is located in the second positioning hole 45, and the lower end of the upper positioning pin 43 passes through the second positioning hole 45 on the board surface of the fixing seat 35 and the limiting sleeve 41.

[0044] Optionally, the limiting assembly 4 also includes a lower positioning pin 46, and the lower plate surface of the fixing seat 35 and the plate surface of the limiting ring 42 are both processed with a third positioning hole, and the two ends of the lower positioning pin are respectively located in the third positioning holes of the fixing seat 35 and the limiting ring 42.

[0045] The upper positioning pin 43 and the lower positioning pin 46 limit the relative positions of the circuit board 5, the fixing seat 35, the limiting sleeve 41 and the limiting ring 42 to avoid relative movement or rotation of the structure during the tool setting process, ensure the position stability of the internal structure, and improve the tool setting accuracy.

[0046] Specific implementation case 4:

[0047] A five-axis tool setting device for a CNC machine tool, comprising a stylus 1, a trigger swing assembly 2, an elastic test assembly 3, a circuit board 5, a housing 6, and a mounting bracket assembly 8, wherein the stylus 1 is connected to the trigger swing assembly 2, the trigger swing assembly 2 is electrically conductive with the elastic test assembly 3, one end of the elastic test assembly 3 is electrically connected to the circuit board 5, and the limit assembly 4 is fixedly connected to the circuit board 5; the trigger swing assembly 2 is directly or indirectly connected to the housing 6 via an elastic member; the trigger swing assembly 2, the elastic test assembly 3, and the circuit board 5 are all arranged inside the housing 6, and the circuit board 5 is directly or indirectly fixed to the surface of the housing 6; the lower plate surface of the housing 6 is processed with a hole for a wire to pass through, and an external power supply is connected to the circuit board 5 via a wire. The tool setting device is fixedly installed through the mounting frame assembly 8, and the mounting frame assembly 8 includes a fixed base 81, a rotating motor 82, a bent arm 83, and a shell mounting seat 84. The rotating motor 82 is installed in the fixed base 81, and the power output end of the rotating motor 82 is fixedly connected to one end of the bent arm 83, and the other end of the bent arm 83 is connected to the shell mounting seat 84. The shell 6 is fixed in the shell mounting seat 84, and planes 62 are processed on both sides of the shell 6. Threaded holes are processed at corresponding positions of the shell mounting seat 84. The screws are screwed into the threaded holes of the shell mounting seat 84 and rest against the planes 62 to complete the assembly of the shell 6 and the shell mounting seat 84.

[0048] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A five-axis tool setting device for a CNC machine tool, characterized by: The device comprises a stylus, a trigger oscillating assembly, an elastic testing assembly, a circuit board, and a housing. The stylus is connected to the trigger oscillating assembly, the trigger oscillating assembly is electrically conductive with the elastic testing assembly, one end of the elastic testing assembly is electrically connected to the circuit board, and the trigger oscillating assembly is directly or indirectly connected to the housing via an elastic member. The trigger oscillating assembly, the elastic testing assembly, and the circuit board are all disposed inside the housing. The circuit board is directly or indirectly fixed to the housing. A hole for a wire to pass through is formed on the lower surface of the housing, and an external power supply is connected to the circuit board via a wire. The trigger swing assembly includes a swinging rotating body, a plug body, a first spring, and a lifting contact rod. The swinging rotating body is connected to the contact pin, the plug body is fixed in the rotating body space of the swinging rotating body, and the lifting contact rod is fixed to the plug body. The two ends of the first spring are directly or indirectly connected to the plug body and the housing respectively, realizing an elastic connection between the trigger swing assembly and the housing. The lifting contact rod controls the on-off of the circuit in the elastic test assembly by lifting and lowering. It also includes a mounting frame assembly, which includes a fixed base, a rotating motor, a bent arm, and a shell mounting seat. The rotating motor is installed in the fixed base, the power output end of the rotating motor is fixedly connected to one end of the bent arm, and the other end of the bent arm is connected to the shell mounting seat. The shell is fixed in the shell mounting seat, and planes are processed on both sides of the shell, and threaded holes are processed at corresponding positions of the shell mounting seat. Screws are screwed into the threaded holes of the shell mounting seat and rest against the plane to complete the assembly of the shell and the shell mounting seat.

2. A five-axis tool setting device for a CNC machine tool as claimed in claim 1, characterized in that: The elasticity testing assembly includes a connector, N first metal balls, a second metal ball, and a second spring. The first metal ball is fixed to the end of the connector, the second metal ball is fixed to the end of the second spring, the second metal ball is in contact with the N first metal balls arranged at equal angles, and the end of the connector is directly or indirectly electrically connected to the circuit board, where N is a natural number greater than or equal to 2.

3. A five-axis tool setting device for a CNC machine tool as claimed in claim 2, characterized in that: The elasticity testing assembly also includes a fixing seat, a center blind hole is processed in the center of the fixing seat, the second spring passes through the center blind hole and one end is fixed to the fixing seat, N connector mounting holes arranged at equal angles are processed with the center blind hole as the center, N connectors are installed in the connector mounting holes, and the first metal ball and the second metal ball both extend out of the lower end surface of the fixing seat.

4. A five-axis tool setting device for a CNC machine tool as claimed in claim 3, characterized in that: It also includes a limit assembly, which includes a limit sleeve and a limit ring. The limit sleeve is fixed to the limit ring. The limit ring is processed with N metal ball limit holes connected to the inner ring wall. The N first metal balls are located in the metal ball limit holes. The limit sleeve is connected to the outer shell, and one end of the first spring is sleeved on the outside of the limit sleeve.

5. A five-axis tool setting device for a CNC machine tool as claimed in claim 4, characterized in that: The limiting assembly also includes an upper positioning pin, a first positioning hole, and a second positioning hole. The first positioning hole is respectively processed on the upper plate surface of the fixing seat and the limiting sleeve, and the second positioning hole is processed on the board surface of the circuit board. The upper end of the upper positioning pin is located in the second positioning hole, and the lower end of the upper positioning pin passes through the second positioning hole on the board surface of the fixing seat and the limiting sleeve.

6. A five-axis tool setting device for a CNC machine tool as claimed in claim 4, characterized in that: The limiting assembly also includes a lower positioning pin. The lower plate surface of the fixing seat and the plate surface of the limiting ring are both processed with a third positioning hole. The two ends of the lower positioning pin are respectively located in the third positioning holes of the fixing seat and the limiting ring.

7. A five-axis tool setting device for a CNC machine tool as claimed in claim 1, characterized in that: It also includes a gyro-shaped buffer sealing sleeve, which is sleeved on the outside of the swinging and rotating body. The swinging and rotating body is located between the swinging and rotating body and the shell.

8. A five-axis tool setting device for a CNC machine tool as claimed in claim 1, characterized in that: Limiting grooves are processed on both sides of the swinging and rotating body, and a limiting rod is welded and fixed on the inner wall of the corresponding shell. One end of the limiting rod extends into the limiting groove, which limits the swinging and lifting stroke of the swinging and rotating body during the tool setting process.

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