CN106441113A - Calibration device and method for detecting laser displacement sensor in normal direction by automatic boring and riveting machine, and calibration method applying calibration device - Google Patents

Abstract

The invention discloses a calibration device for detecting a laser displacement sensor in a normal direction by an automatic boring and riveting machine and a calibration method applying the calibration device. The calibration device comprises a calibration plate and a core rod through which the calibration plate is mounted on a main shaft, wherein the calibration plate is provided with a mounting hole and technological holes; the mounting hole is formed in the center of the calibration plate; the technological hole comprise three groups of holes distributed in a square shape; each group of holes comprise four holes; and each hole is positioned at the peak of the square. The invention also discloses the calibration method applying the calibration device. The calibration device provided by the invention is simple and convenient to operate, can determine the zero positions and the direction coefficients of displacement sensors and the light spot distance during normal-direction adjustment quickly and accurately.

Description

The caliberating device of automatic drill riveter normal direction detection laser displacement sensor and its demarcation Method

Technical field

The invention belongs to riveting field is bored in aircraft digital assembly automation, and in particular to a kind of automatic drill riveter normal direction detection The caliberating device of laser displacement sensor and method.

Background technology

In aircraft assembling, riveting remains main method of attachment.Traditional hand riveting's labor condition is poor, production effect Rate is low, and riveting quality depends critically upon the experience of workman and technology, it is difficult to meet the requirement of aircraft assembling.The mechanization of riveting and Automatization, is the inexorable trend of riveting technology development.In terms of automatic Drilling/Riveting, the external research to correlation technique and application are More ripe, such as the equipment supplier such as EI, GEMCOR, BROETJE have developed respective automatic drill riveter, and successful Application respectively In the numeric terminal of Multiple Type aircraft；And the aircratfsman of the country and scientific research institutions also began to independently grind in recent years From dynamic boring and riveting machine, to improve the quality for boring riveting and efficiency.

Automatic drill riveter during drilling, due to aircraft target ship assembling manufacturing error and automatic drill riveter position error Impact, certain deviation can be produced at the hole position to be processed of aircraft target ship surface between normal direction and tool axis direction.Normal direction is inclined Difference is excessive, will directly affect drilling machining accuracy and aircraft assembling quality, while reducing cutting-tool's used life, it is seen that boring It is very important to the detection of Norma l deviation and adjustment during riveting.Currently the general method of Norma l deviation correction is：First Using laser displacement sensor survey calculation surface of the work normal direction, then adjustment boring and riveting machine attitude is so that tool axis and workpiece table Face overlaps.This method can effectively improve drilling normal direction precision, but while be also required to the zero-bit to laser displacement sensor, side Accurate Calibration is carried out to parameters such as hot spot distances when coefficient and normal direction adjustment.

Content of the invention

For problem above, the invention provides a kind of demarcation dress of automatic drill riveter normal direction detection laser displacement sensor Put, and a kind of scaling method of laser displacement sensor is proposed based on the device.Apparatus of the present invention are simple and convenient to operate, can With rapidly and accurately complete laser displacement sensor zero-bit, direction coefficient and normal direction adjustment when hot spot distance demarcation.

A kind of automatic drill riveter normal direction detects the caliberating device of laser displacement sensor, including scaling board and for marking Fixed board is installed to the plug on main shaft；

The scaling board is provided with installing hole and fabrication hole；

The mounting hole site is in scaling board center；

The fabrication hole is the hole of multigroup arrangement that is square, and includes four holes per group, and each hole position is in square summit, The square center for being centrally located at scaling board, center superposition different per the length of side of the group fabrication hole group squarely and length of side is parallel.

Preferably, described fabrication hole be three groups, fabrication hole composition three square length of sides are different, center superposition and The length of side is parallel.

The scaling method of laser displacement sensor caliberating device is detected using automatic drill riveter normal direction, is comprised the following steps：

(1) by plug, scaling board being installed on main shaft, main shaft will be locked after scaling board adjustment level；

(2) main shaft is moved along direction of feed, and the position for adjusting four laser displacement sensors makes its four hot spots right respectively Four fabrication holes of fiducial mark fixed board one of which, fix four laser displacement sensors, and record the constituted side of four fabrication holes The length of side of shape；

(3) main shaft continues to move along direction of feed, makes scaling board be adjacent to presser feet end face, and four laser displacement sensors are read Number zero setting；

(4) main shaft moves to primary importance along direction of feed, records the reading l of four laser displacement sensors respectively₁₁、 l₂₁、l₃₁And l₄₁；

(5) main shaft continues to move to the second position, records the reading l of four laser displacement sensors respectively₁₂、l₂₂、l₃₂With l₄₂；

(6) according to reading l₁₁、l₂₁、l₃₁、l₄₁、l₁₂、l₂₂、l₃₂And l₄₂, calculate the direction of four laser displacement sensors Coefficient：

Wherein, L is the distance between primary importance and second position.

In step (2), main shaft along direction of feed move when, distance of the scaling board away from presser feet end face be bore riveting when work Distance.

In step (2), its hot spot Alignment Process hole is made by adjusting laser displacement sensor, can demarcate very accurately The position of displacement transducer.

In step (2), when the length of side of the organized squarely of four fabrication holes of record is to determine the adjustment of boring and riveting machine normal direction Hot spot distance.

In step (3), by four displacement transducer reading zero setting be in order to determine the zero-bit of laser displacement sensor.

In step (4) and step (5), primary importance and the second position that the main shaft is moved along direction of feed, need Ensure the hot spot of four laser displacement sensors within the scope of scaling board, and Alignment Process hole is unable to, hot spot leaves scaling board After scope or Alignment Process hole, the reading of laser displacement sensor will fail.

It is an advantage of the current invention that：

(1) caliberating device simple structure, easy to make；

(2) three groups of fabrication holes on scaling board can complete the demarcation of the displacement transducer of different structure and size；

(3) by adjusting by way of displacement transducer makes hot spot Alignment Process hole, it is to avoid asking for the hot spot difficult measurement of distance Topic；

(4) scaling method is easy to operate, and precision is higher, practical.

Description of the drawings

Fig. 1 is the automatic drill riveter normal direction detection calibration device for displacement sensor schematic diagram in the present invention；

Fig. 2 is the schematic diagram of scaling board in caliberating device of the present invention；

Fig. 3 is the schematic flow sheet of scaling method of the present invention.

Specific embodiment

In order to more specifically describe the present invention, below in conjunction with the accompanying drawings and specific embodiment is to technical scheme It is described in detail.

Automatic drill riveter of the present invention is that publication number CN105643278A is disclosed for the sleeping of aircraft target ship assembling Formula automatic Drilling/Riveting lathe, the presser feet unit of automatic drill riveter disclosed in described presser feet publication number CN105728630A.

As shown in figure 1, automatic Drilling/Riveting machine have for install drilling cutter main shaft 1, for workpiece pressing surface pressure Foot 2, the displacement transducer 3 on presser feet, scaling board 4 and the plug 5 for being installed to scaling board on main shaft, plug Lock after on the handle of a knife of 5 insertion main shafts.

Displacement transducer 3 includes laser displacement sensor 31, laser displacement sensor 32, laser displacement sensor 33, swashs Optical displacement sensor 34.

The caliberating device of automatic drill riveter normal direction detection displacement transducer of the present invention is made up of with plug 5 scaling board 4；

As shown in Fig. 2 scaling board 4 is provided with fabrication hole 6 and installing hole 7；Installing hole 7 is located at 4 center of scaling board, for inciting somebody to action Scaling board 4 is coupled together with plug 5；Fabrication hole 6 includes the hole of three groups of arrangements that are square, and wherein, first group includes hole h11, hole H12, hole h13 and hole h14, second group includes hole h21, hole h22, hole h23 and hole h24, and the 3rd group includes hole h31, hole h32, hole H33 and hole h34；Fabrication hole 6 is used for adjusting the installation site of displacement transducer and aids in completing displacement transducer in normal direction adjustment When hot spot distance demarcation, installing hole 7 be located at the organized squarely of fabrication hole 6 center.

The scaling method of calibration device for displacement sensor is detected using automatic drill riveter normal direction, is comprised the following steps：

Step 1, is installed to scaling board 4 on main shaft 1 by plug 5, will lock main shaft 1 after 4 adjustment level of scaling board；

Step 2, main shaft 1 is moved along direction of feed, adjustment laser displacement sensor 31, laser displacement sensor 32, laser Displacement transducer 33 and laser displacement sensor 34, make four hot spots be respectively aligned to four techniques of 4 one of which of scaling board Hole, then fixes the position of four laser displacement sensors, and to record the length of side of the organized squarely of four fabrication holes be 53.0mm, So that it is determined that the hot spot distance during adjustment of boring and riveting machine normal direction；

The distance between scaling board 4 and 2 end face of presser feet are worth for 15.0mm for boring operating distance during riveting.

Step 3, main shaft 1 continues to move along direction of feed, makes scaling board 4 be adjacent to 2 end face of presser feet, then by four laser positions The reading zero setting of displacement sensor, so that it is determined that the zero-bit of four laser displacement sensors；

Step 4, main shaft 1 moves to primary importance along direction of feed, records the reading of four laser displacement sensors respectively l₁₁For 20.661mm, l₂₁For 22.192mm, l₃₁For 21.537mm and l₄₁For 21.330mm,

Step 5, main shaft 1 continues motion 20.0mm to the second position, records the reading of four laser displacement sensors 3 respectively l₁₂For 43.819mm, l₂₂For 45.348mm, l₃₂For 44.618mm and l₄₂For 44.651mm,

Step 6, according to reading l₁₁、l₂₁、l₃₁、l₄₁、l₁₂、l₂₂、l₃₂And l₄₂, calculate the direction of four displacement transducers Coefficient：

Primary importance and the second position that main shaft 1 is moved along direction of feed, need to ensure four laser displacement sensors Hot spot is within the scope of scaling board 4, and is unable to Alignment Process hole 6, after hot spot leaves scaling board scope or Alignment Process hole, swashs The reading of Optical displacement sensor will fail.

The caliberating device simple structure of the present invention, easy to make；Three groups of fabrication holes on scaling board can complete different knots The demarcation of the displacement transducer of structure and size；By way of adjusting displacement transducer and making hot spot Alignment Process hole, keep away well The problem of the difficult measurement of hot spot distance is exempted from；And scaling method is easy to operate, precision is higher, practical.

Claims (3)

1. a kind of automatic drill riveter normal direction detects the caliberating device of laser displacement sensor, it is characterised in that：Including scaling board with And the plug for being installed to scaling board on main shaft；

The scaling board is provided with installing hole and fabrication hole；

The mounting hole site is in scaling board center；

The fabrication hole is the hole of multigroup arrangement that is square, and includes four holes per group, and each hole position is in square summit, square The center of scaling board is centrally located at, center superposition different per the length of side of the group fabrication hole group squarely and length of side is parallel.

2. a kind of automatic drill riveter normal direction detects the caliberating device of laser displacement sensor, it is characterised in that：Described fabrication hole For three groups, three square length of sides of fabrication hole composition are different, the center superposition and length of side is parallel.

3. the scaling method of laser displacement sensor caliberating device is detected using automatic drill riveter normal direction, is comprised the following steps：

(1) by plug, scaling board being installed on main shaft, main shaft will be locked after scaling board adjustment level；

(2) main shaft is moved along direction of feed, and the position for adjusting four laser displacement sensors makes its four hot spots be respectively aligned to mark Four fabrication holes of fixed board one of which, fix four laser displacement sensors and record the side of the organized squarely of four fabrication holes Long；

(3) main shaft continues to move along direction of feed, makes scaling board be adjacent to presser feet end face, and four laser displacement sensor readings are put Zero；

(4) main shaft moves to primary importance along direction of feed, records the reading l of four laser displacement sensors respectively₁₁、l₂₁、l₃₁ And l₄₁；

(5) main shaft continues to move to the second position, records the reading l of four laser displacement sensors respectively₁₂、l₂₂、l₃₂And l₄₂；

(6) according to reading l₁₁、l₂₁、l₃₁、l₄₁、l₁₂、l₂₂、l₃₂And l₄₂, calculate the direction coefficient of four laser displacement sensors：

$\left\{\begin{array}{c}{c}_1=\frac{L}{\left|\right|l_{12}-l_{11}\left|\right|}\\ c_2=\frac{L}{\left|\right|l_{22}-l_{21}\left|\right|}\\ c_3=\frac{L}{\left|\right|l_{32}-l_{31}\left|\right|}\\ c_4=\frac{L}{\left|\right|l_{42}-l_{41}\left|\right|}\end{array}\right.$

Wherein, L is the distance between primary importance and second position.