Integrated sensing mechanism for height detection and collision avoidance of numerical control machine tool

Abstract

The application discloses a kind of numerical control machine tool probe height, anti-collision integrated sensing mechanism, it is characterized by it includes anti-collision ring (1) and probe height contact (2), anti-collision ring (1) is installed on the one end of ball joint connecting rod (4) extension pedestal (8), the other end of ball joint connecting rod (4) is connected with ball joint (11) being installed in pedestal (8), probe height contact (2) is installed on the one end of probe height rod (3), the other end of probe height rod (3) passes through ball joint connecting rod (4) and ball joint (11) and is connected with the one end of flexible coupling (9), the other end of flexible coupling (9) is connected with the output shaft of pneumatic cylinder (10), pneumatic cylinder (10) is installed on the upper portion of pedestal (8);In pedestal (8), ball joint connecting rod (4) is installed with inductive switch (6) and elastic reset ring (5) around.The application structure is simple, and work is safe and reliable.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of sensing technology, especially a kind of numerical control machine tool Z axis position detection control technology, specifically a kind of numerical control machine tool probe height, anti-collision integrated sensing mechanism. BACKGROUND

[0002] At present, numerical control machine tool Z axis movement control mainly relies on encoder or position micro switch control, cannot realize accurate control. In order to solve this problem, people generally use complex numerical control programming technology, consume a lot of manpower and material resources, repeatedly simulate debugging, for single piece small batch processing, not only high technical personnel requirements, and artificial cost is also quite big, will cause the increase of cost, another method is to use template for processing, this also needs to design and process complex template, this will bring the template for different purposes and increase cost.In addition, in the processing operation of numerical control machine tool, due to processing will cause part of the material separation of workpiece and distribute in processing area, there is the possibility of damage due to collision in processing process. Therefore, it is of great significance to design a kind of universal low-cost probe height, anti-collision sensing mechanism. SUMMARY

[0003] The purpose of the present application is to solve the problem of complicated Z axis height control of numerical control machine tool and easy collision of machining head, and to design a kind of numerical control machine tool probe height, anti-collision integrated sensing mechanism.

[0004] The technical scheme of the present application is as follows:

[0005] A kind of numerical control machine tool probe height, anti-collision integrated sensing mechanism, characterized in that it comprises anti-collision ring 1 and probe height contact 2, anti-collision ring 1 is installed on one end of ball joint connecting rod 4 extending from base 8, the other end of ball joint connecting rod 4 is connected with ball joint 11 installed in base 8, probe height contact 2 is installed on one end of probe height rod 3, the other end of probe height rod 3 is connected with one end of flexible coupling 9 through ball joint connecting rod 4 and ball joint 11, the other end of flexible coupling 9 is connected with the output shaft of air cylinder 10, air cylinder 10 is installed on the upper part of base 8;Inductive switch 6 and elastic reset ring 5 are installed around ball joint connecting rod 4 in base 8.

[0006] The reset spring 7 is installed on the probe height rod 3.

[0007] The position inductive sensor for sensing the position of air cylinder piston is installed on the top, middle and lower part of the air cylinder.

[0008] The elastic reset ring 5 is located on the opening end face of the lower end of the base 8, and the outer diameter is greater than the hole diameter of the ball joint connecting rod 4 mounting hole on the base.

[0009] The base 8 is connected by upper and lower two parts, the ball joint 11 and the ball joint connecting rod 4 are located in the lower part, and the flexible coupling 9 is located in the upper part.

[0010] The present application has the following advantages:

[0011] The present application has the following advantages:

[0012] The present application has the following advantages: BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a structural schematic diagram of the present application.

[0014] Figure 2 is a schematic diagram of the high-probing working process of the present application.

[0015] Figure 3 is a schematic diagram of the anti-collision working process of the present application.

[0016] In the figure: 1-anti-collision ring, 2-high-probing contact, 3-high-probing rod, 4-ball joint connecting rod, 5-elastic reset ring, 6-inductive switch, 7-reset spring, 8-base, 9-flexible coupling, 10-air cylinder, 11-ball joint, 12-workpiece. DETAILED DESCRIPTION

[0017] The present application will be further described below in combination with the drawings and examples.

[0018] As Figure 1 shown.

[0019] A high-probing and anti-collision integrated sensing mechanism for a numerical control machine tool, which comprises an anti-collision ring 1, a high-probing contact 2, a high-probing rod 3, a ball joint connecting rod 4, an elastic reset ring 5, an inductive switch 6, a reset spring 7, a base 8, a flexible coupling 9, an air cylinder 10, a ball joint 11, as Figure 1As shown in the drawings, the base 8 is connected by two parts, the ball joint 11 and the ball joint connecting rod 4 are located in the lower part, the flexible coupling 9 is located in the upper part, the anti-collision ring 1 is installed on the end of the ball joint connecting rod 4 extending out of the base 8, the other end of the ball joint connecting rod 4 is connected with the ball joint 11 installed in the base 8, the height detection probe 2 is installed on one end of the height detection probe rod 3, the reset spring 7 is installed on the height detection probe rod 3, the other end of the height detection probe rod 3 is connected with one end of the flexible coupling 9 through the ball joint connecting rod 4 and the ball joint 11, the other end of the flexible coupling 9 is connected with the output shaft of the air cylinder 10, and the air cylinder 10 is installed on the upper part of the base 8; the inductive switch 6 and the elastic reset ring 5 are installed in the base 8 around the ball joint connecting rod 4. The top, middle and lower parts of the air cylinder are all provided with position sensors for sensing the position of the air cylinder piston (which can be realized by using micro switches, photoelectric inductive switches and the like). In specific implementation, the position of the elastic reset ring 5 can be arranged on the opening end face of the lower end of the base 8, and the outer diameter thereof is greater than the hole diameter of the ball joint connecting rod 4 mounting hole on the base.

[0020] The working principle of the height detection probe of the present application is shown in the drawings. Figure 2

[0021] 1. After the CNC sends a height detection command, the Z axis is first moved upward to a safe height, and the A position signal is detected. After the A point has a signal, the height detection probe is pressed downward by the air cylinder 10, the flexible coupling 9 is pushed, the height detection probe rod 3 is pressed down, the height detection probe 2 is extended downward beyond the anti-collision ring 1 by a certain distance, and reaches the B position sensor under the driving of the air cylinder.

[0022] 2. After the B position sensor has a signal, the CNC controls the machine tool Z axis to descend, and the height detection probe also descends. After the height detection probe 2 contacts the workpiece, the Z axis continues to descend, and the height detection probe 2 moves upward under pressure. At this time, the anti-collision ring 1 gradually approaches the workpiece 12. When the anti-collision ring 1 reaches a certain distance from the workpiece, the air cylinder ascends to the C point sensor, the Z axis stops descending, and the air cylinder 10 ascends.

[0023] 3. After the air cylinder 10 ascends, the reset spring 7 pushes the height detection probe rod 3 to make the height detection probe 2 continue to move upward. When the reset spring 7 reaches a free state, the air cylinder 10 ascends to the starting point A, and the sensor has a signal, thereby completing the entire height detection action.

[0024] The working principle of the anti-collision device of the present application is shown in the drawings. Figure 3

[0025] 1. When the anti-collision ring 1 contacts an obstacle higher than the set height of the anti-collision ring 1 during the operation of the machine tool, the anti-collision ring 1 drives the ball joint connecting rod 4 to overcome the resistance of the elastic reset ring 5, drives the ball joint 11 to produce an angular deviation. At this time, the sensing signal of the annular inductive switch 6 changes and sends out a signal, and the machine tool alarms and stops.​​

[0026] 2. Remove the obstacles encountered by the anti-collision ring 1, and the elastic reset ring 5 makes the ball joint 11 reset naturally, at this time the inductive switch 6 releases the signal, and the machine tool cancels the alarm.

[0027] The parts not involved in the present application are the same as or can be realized by using the prior art.

Claims

1. A high-probing and anti-collision integrated sensing mechanism for a numerical control machine tool, characterized in that It includes anti-collision ring (1) and high probe contact (2), anti-collision ring (1) is installed on the one end of the ball joint connecting rod (4) extending base (8), the other end of the ball joint connecting rod (4) is connected with the ball joint (11) installed in the base (8), high probe contact (2) is installed on the one end of the high probe rod (3), the other end of the high probe rod (3) passes through the ball joint connecting rod (4) and the ball joint (11) and is connected with the one end of the flexible coupling (9), the other end of the flexible coupling (9) is connected with the output shaft of the air cylinder (10), the air cylinder (10) is installed on the upper part of the base (8); In the base (8), the ball joint connecting rod (4) is installed around the inductive switch (6) and the elastic reset ring (5); The top, middle and lower part of the air cylinder are all installed with position sensor for sensing the position of the air cylinder piston; The base (8) is connected by the upper and lower two parts, the ball joint (11) and the ball joint connecting rod (4) are located in the lower part, and the flexible coupling (9) is located in the upper part; When the anti-collision ring collides with the obstacle higher than the set height of the anti-collision ring during the work of the machine tool, the anti-collision ring will drive the ball joint connecting rod to overcome the resistance of the elastic reset ring, drive the ball joint to produce angular deviation, at this time the sensing signal of the annular inductive switch changes and senses the signal, the machine tool alarms and stops; Remove the obstacle collided by the anti-collision ring, the elastic reset ring makes the ball joint reset naturally, at this time the inductive switch releases the signal, and the machine tool cancels the alarm; The reset spring (7) is installed on the high probe rod (3).

2. The integrated height detection and collision avoidance sensor mechanism for CNC machine tools according to claim 1, characterized in that The elastic reset ring (5) is located on the opening end face of the lower end of the base (8), and the outer diameter thereof is greater than the hole diameter of the ball joint connecting rod (4) mounting hole on the base.

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