CN102825545B - Method for measuring shape of woodworker PCD (Poly Crystal Diamond) cutter before machining - Google Patents

Abstract

The invention relates to a method for measuring the shape of a woodworking PCD tool before processing. The steps are: (1) setting up a control system, four servo motors, a distance measuring sensor, a controller, an I/O acquisition card and a woodworking PCD tool to be tested (2) The control system controls the first servo motor to drive the distance sensor to move to the tooth to be detected, and controls the second, third and fourth servo motors to drive the distance sensor and the distance sensor. Relative motion; (3) The ranging sensor detects the first point on the surface of the detected tooth, and returns the detected first point position coordinates (x ₁ , y ₁ , z ₁ ) to the control system; (4) Repeat step (3) to return the detected second point position coordinates (x ₂ , y ₂ , z ₂ ) to the control system; (5) Repeat steps (3) and (4) to return the detected third point The position coordinates of each point (x ₃ , y ₃ , z ₃ ) are returned to the control system. According to the recorded coordinate values of the three points, the tool plane of the detected tooth is formed, and the intersection line with the ideal outer cylindrical surface is obtained to obtain the detected tooth grinding trajectory.

Description

A method for measuring the shape of woodworking PCD tools before processing

technical field

The invention relates to a method for measuring the shape of a tool, in particular to a method for measuring the exact shape of a woodworking PCD tool with a non-contact measuring method before grinding it.

Background technique

PCD spiral cutters are widely used in the wood processing industry, and its demand is increasing year by year. The most important shape index for grinding PCD tools is that the outermost ends of each cutting edge must be on the same outer circle. Since the shape and position deviation during welding are unpredictable, it is necessary to measure the accuracy of the blade edge before processing. position, and then obtain the trajectory required for processing. The currently used measurement methods are point-by-point measurement at equal intervals. When the cutting edge of the tool is long or the measurement interval is small, due to the large number of points to be measured, the measurement efficiency of this measurement method is very low. The low measurement efficiency causes the machine tool to spend a large part of its time in preparation before cutting, which reduces the effective running time of the machine tool and increases the manufacturing cost of the tool.

Contents of the invention

In view of the above problems, the purpose of the present invention is to provide a method for measuring the shape of woodworking PCD tools before processing with high measurement efficiency.

In order to achieve the above object, the present invention adopts the following technical solutions: a method for measuring the shape of a woodworking PCD tool before processing, which includes the following steps: (1) setting a woodworking PCD tool shape measurement system, the measurement system includes a control system, a first a servo motor, a second servo motor, a third servo motor, a fourth servo motor, a range sensor, a controller, an I/O acquisition card and a woodworking PCD tool to be tested; the control system is preset with Four servo motor motion trajectory control instructions; (2) The control system controls the first servo motor to drive the distance measuring sensor along the Z axis to move to the detected tooth of the woodworking PCD tool according to the preset motion trajectory control instructions. At the same time, the control The system controls the second servo motor, the third servo motor and the fourth servo motor to drive the distance measuring sensor to make relative movement with the distance measuring sensor; (3) The distance measuring sensor detects the first tooth on the surface of the woodworking PCD tool to be detected. point, and the controller and I/O acquisition card will return the first point position coordinates (x ₁ , y ₁ , z ₁ ) detected by the current ranging sensor to the control system, and the control system will record the position coordinates; ( 4) According to the preset control command in the control system, the first servo motor is controlled to drive the ranging sensor to move to the second point on the surface of the tooth to be detected, while the second servo motor and the fourth servo motor drive the woodworking PCD Tool movement, and repeat step (3), return the second point position coordinates (x ₂ , y ₂ , z ₂ ) detected by the ranging sensor to the control system; (5) Repeat step (3), step (4 ), the ranging sensor returns the detected position coordinates (x ₃ , y ₃ , z ₃ ) of the third point on the surface of the detected tooth to the control system, and the control system forms the detected position according to the recorded coordinates of the three points The tool plane of the tooth, and the intersection line between this plane and the ideal outer cylindrical surface of the detected tooth of the woodworking PCD tool is obtained to obtain the grinding trajectory of the detected tooth of the woodworking PCD tool.

In the step (1), the output ends of the control system in the woodworking PCD tool shape measurement system are respectively connected to the four servo motors, and the first servo motor drives the distance measuring sensor to move along the Z axis. The second servo motor and the third servo motor respectively drive the woodworking PCD tool to move along the X axis and the Y axis, and the fourth servo motor drives the woodworking PCD tool to rotate; Under the control of the controller, the detected tooth of the woodworking PCD tool is detected, and the detection result is transmitted to the I/O acquisition card through the controller, and the I/O acquisition card transmits the collected detection data to the control unit. system.

The distance measuring sensor adopts one of a non-contact distance measuring sensor and a contact distance measuring sensor.

The present invention has the following advantages due to the adoption of the above technical scheme: 1. The present invention detects three-point position coordinates on the surface of the tooth to be detected due to the use of distance measuring sensors, and records the three-point position coordinates by the control system, and the three-point position coordinates constitute the detected tooth surface. The tool plane of the detected tooth, and the intersection line between this plane and the ideal outer cylindrical surface of the detected tooth of the woodworking PCD tool is obtained to obtain the grinding track of the detected tooth. The measurement method saves multiple measurements of a single tooth in the current equidistant detection method, and improves the measurement efficiency. 2. The present invention can adopt a non-contact distance measuring sensor or a contact distance measuring sensor because the distance measuring sensor can determine the cutting edge curve walked when the woodworking PCD tool is ground according to the measured three-point position coordinates, so that the method Wide range of applications. The invention can be widely applied in tool shape measurement.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the present invention;

Fig. 2 is the detection schematic diagram of the present invention when detecting the PCD tool shape;

Fig. 3 is a partial schematic diagram of the present invention when detecting the shape of a PCD tool.

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

As shown in Figure 1 and Figure 2, the present invention provides a method for measuring the shape of woodworking PCD tools before processing. Point position, record the sensor information, and then get the shape of the cutter tooth. It includes the following steps:

1) Set up a woodworking PCD tool shape measurement system, which includes a control system 1, a first servo motor 2, a second servo motor 3, a third servo motor 4, a fourth servo motor 5, and a distance sensor 6. A controller 7, an I/O acquisition card 8 and a woodworking PCD tool 9 to be tested. Wherein, the control system 1 is preset with four servo motor motion trajectory control instructions.

The output end of the control system 1 is respectively connected to the first servo motor 2, the second servo motor 3, the third servo motor 4 and the fourth servo motor 5, and the first servo motor 2 drives the distance measuring sensor 6 to move along the Z axis , hereinafter referred to as the Z-axis servo motor; the second servo motor 3 and the third servo motor 4 are respectively used to drive the woodworking PCD tool 9 to move along the X-axis and Y-axis, and are hereinafter referred to as the X-axis servo motor and the Y-axis servo motor respectively. Motor; the fourth servo motor 5 is used to drive the woodworking PCD cutter 9 to rotate, hereinafter referred to as the A-axis servo motor. Under the control of the controller 7, the distance measuring sensor 6 detects the detected tooth 10 of the woodworking PCD tool 9, and the detection result is transmitted to the I/O acquisition card 8 through the controller 7, and the I/O acquisition card 8 collects the detected data It is transmitted to the control system 1, and the coordinate values of the four servo motors are recorded by the control system 1.

2) The control system 1 controls the Z-axis servo motor 2 to drive the distance measuring sensor 6 to move to the detected tooth 10 of the woodworking PCD tool 9 according to the preset motion trajectory control command. At the same time, the control system 1 controls the X-axis, Y-axis and Z-axis The servo motor drives the distance measuring sensor 6 to move, so that the woodworking PCD tool 9 and the distance measuring sensor 6 do relative motion.

3) As shown in Figure 3, the distance measuring sensor 6 detects the first point on the surface of the detected tooth 10 of the woodworking PCD tool 9, and the controller 7 and the I/O acquisition card 8 detect the current distance measuring sensor 6 The position coordinates (x ₁ , y ₁ , z ₁ ) of the first point are returned to the control system 1, and the position coordinates are recorded by the control system 1 .

4) According to the control command preset in the control system 1, control the Z-axis servo motor to drive the distance measuring sensor 6 to move to the second point on the surface of the detected tooth 10, and at the same time, the X-axis and A-axis servo motors drive the woodworking PCD tool 9 movement, and repeat step 3), and return the second point position coordinates (x ₂ , y ₂ , z ₂ ) detected by the ranging sensor 6 to the control system 1 .

5) Repeat step 3) and step 4), and the distance measuring sensor 6 returns the detected position coordinates (x ₃ , y ₃ , z ₃ ) of the third point on the surface of the detected tooth 10 to the control system 1, and the control system 1 According to the recorded three-point coordinate values on the surface of the detected tooth of the woodworking PCD tool 9, the tool plane 11 of the detected tooth is formed (as shown in Figure 2), and this plane is combined with the ideal outer end cylinder of the woodworking PCD tool 9 to be detected. The intersection line of the surface 12 can be used to obtain the grinding trajectory 13 of the detected tooth of the woodworking PCD tool 9 .

In the above step 1), the ranging sensor 6 may be a non-contact ranging sensor or a contact ranging sensor.

The above-mentioned embodiments are only used to illustrate the present invention, and the connection, structure and steps of each part can be changed. On the basis of the technical solution of the present invention, any connection and structure of individual parts according to the principles of the present invention can be changed. Improvements and equivalent transformations should not be excluded from the protection scope of the present invention.

Claims (2)

1. the method for a foreprocess gauge carpenter PCD shape of tool, one carpenter PCD shape of tool measuring system is set, this measuring system comprises control system, first servomotor, second servomotor, the 3rd servomotor and distance measuring sensor, it is characterized in that, further comprising the steps of:

(1) carpenter PCD shape of tool measuring system also comprises the 4th servomotor, controller, I/O capture card and carpenter PCD cutter to be measured; In described control system, preset four described servomotor movement locus control instructions; Control system output in described carpenter PCD shape of tool measuring system connects respectively four described servomotors, described first servomotor drives described distance measuring sensor to move along Z axis, described second servomotor and the 3rd servomotor drive respectively described carpenter PCD cutter moving along X-axis, y-axis shift, and described the 4th servomotor drives described carpenter PCD cutter to rotate; Described distance measuring sensor, under described controller control, detects the detected tooth of described carpenter PCD cutter, and testing result transfers to described I/O capture card through described controller, and described I/O capture card is by extremely described control system of the detection transfer of data collecting;

(2) control system drives distance measuring sensor to move to the detected tooth of carpenter PCD cutter place according to preset first servomotor of movement locus control instruction control along Z axis, meanwhile, second servomotor of control system control, the 3rd servomotor and the 4th servomotor drive distance measuring sensor and carpenter PCD cutter to do relative motion;

(3) distance measuring sensor detects first point on the detected tooth surface of carpenter PCD cutter, and first position coordinates (x current distance measuring sensor being detected by controller and I/O capture card ₁, y ₁, z ₁) be back to control system, record this position coordinates by control system;

(4) according to control command preset in control system, controlling first servomotor drives distance measuring sensor to move to second point on detected tooth surface, second servomotor and the 4th servomotor drive carpenter PCD tool motion simultaneously, and repeating step (3), second some position coordinates (x that distance measuring sensor is detected ₂, y ₂, z ₂) be back to control system;

(5) repeating step (3), step (4), distance measuring sensor is by the 3rd some position coordinates (x on the detected tooth surface detecting ₃, y ₃, z ₃) be back to control system, by control system according to three recorded point coordinates values, form the tool plane of detected tooth, and this plane and the face of cylinder, the carpenter PCD cutter desirable outer end of detected tooth are asked to intersection, obtain the grinding track of the detected tooth of carpenter PCD cutter.

2. the method for a kind of foreprocess gauge carpenter PCD shape of tool as claimed in claim 1, is characterized in that: described distance measuring sensor adopts the one in contactless distance measuring sensor and contact distance measuring sensor.