Automatic hole making and normal direction finding implementation method

Abstract

The invention is applied to the field of aircraft assembly, and provides an automatic drilling normal direction finding implementation method, which comprises the following steps of: obtaining a product normal direction through a product, recording the product normal direction into a file, and reading normal direction data in the file to realize normal direction finding through program operation when drilling a subsequent product to find a normal direction. In the implementation process of the method provided by the invention, the equipment working head does not need to move to a normal position.

Description

Technical Field

[0001] The invention belongs to the technical field of aircraft assembly, and in particular relates to a process design part thereof, and provides a method for realizing automatic hole making and automatic drilling and riveting to find a normal direction. Background Art

[0002] Automatic hole making and automatic drilling and riveting process methods have been widely used in the aircraft assembly process. Before making a hole, the equipment needs to find the normal at the center of the hole to be made. One of the common methods for finding the normal is to use the light method to find the normal at the center of the hole, that is, a light transmitter and receiver is installed on the working head of the equipment. The working head of the equipment first moves to the drilling position to prepare before drilling, and then moves to the normal finding position. The light transmitter emits two orthogonal rays of light, which illuminate the surface to be drilled and reflect back to the receiver. The computer of the equipment calculates the normal value of the center of the hole, and the equipment obtains the normal value, adjusts the position of the working head of the equipment according to the value, and finally moves the working head of the equipment to the drilling position for drilling.

[0003] In the implementation process of the prior art, the working head of the equipment needs to move from the drilling position to the normal finding position to find the normal and adjust it, and then move back to the drilling position to drill. Summary of the invention

[0004] In view of the implementation process of the existing technology, this patent invention provides a method for automatically drilling and finding the normal direction for assembling fastener holes. During the implementation process, the equipment working head does not need to move between the drilling position and the normal direction finding position of each hole to be processed. Only the normal direction needs to be measured once to complete the processing of the same product.

[0005] The technical solution adopted by the present invention is:

[0006] A method for automatically finding the normal direction for drilling holes, the method comprising: storing a file that has acquired normal data and a CNC machining implementation program, wherein the file that stores the acquired normal data includes a machining hole identifier, a hole position, and a normal direction. The CNC equipment machining implementation program includes a machining hole identifier, a machining hole position, and a function code for each machining hole, and the drilling function code can be in the form of a repeatedly referenced function module or in other forms. The function code has the function of reading the content of the stored normal data file. The specific steps for implementing this method are as follows:

[0007] Step 1: Obtain the hole identifier, hole position, and hole normal value of each processed hole of the product by processing the first product. This file is referred to as the normal file in the following.

[0008] The product is fixed to the equipment processing position, and the equipment's automatic normal search function is used to obtain the normal of each processed hole, and the hole identifier, hole position and hole normal value are recorded in the file.

[0009] Step 2: The next processed product is fixed to the processing position of the equipment, and the CNC equipment runs the processing implementation program to move the working head of the equipment to the first position to be drilled. After compensating the normal direction at this position, the drilling action is performed to finally complete the hole processing.

[0010] The second processed product is the same as the first processed product, and the processing method is the same, that is, it is fixed to the same processing position of the equipment and uses the same processing implementation program. This step turns off the automatic normal search device. The processing implementation program includes each processing hole identifier, each processing hole position and each processing hole function code. This processing hole identifier and processing hole position are set before each processing hole function code. The processing hole function code obtains the normal value of the hole to be processed in the normal file according to the previously set processing hole identifier or processing hole position. The process of the equipment automatically making this hole or automatically drilling and riveting this hole is as follows: the CNC equipment executes the hole identifier and hole position information in the program, moves the equipment working head to the position of the hole to be processed, and the equipment continues to run the processing hole function code. The working head position is corrected according to the normal value found, and finally the hole is processed. This step turns off the automatic normal search device.

[0011] Step 3: The equipment continues to make the next hole according to the program, that is, the equipment executes the processing realization program, including the identifier and position of the next hole to be processed in the program, moves the equipment working head to this processing hole position, and the equipment executes the processing hole function code, obtains the normal and adjusts the working head position, and finally processes this hole and completes this hole processing. This step turns off the automatic normal search device.

[0012] Step 4: Repeat the contents of step 3 to complete all hole processing of the product, that is, complete the automatic drilling and automatic riveting work of this product.

[0013] Step 5: Move this product out of the equipment processing area, move the next identical product to be processed into the equipment processing area for processing, and execute step 2.

[0014] The beneficial effects of the present invention are:

[0015] The method for realizing automatic hole making and automatic drilling and riveting normal finding provided by the present invention obtains the product normal through a set of products and records the product normal in a file. When drilling holes in subsequent products to find the normal, the normal data in the normal file is read to obtain the normal, and the working head is moved to the normal position provided by the normal file, so that the working head of the equipment does not need to be moved to the normal finding position, and there is no need to start the normal finding related functions to measure the product normal. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Represents the flowchart of the normal finding method. DETAILED DESCRIPTION

[0017] The present invention is further described below in conjunction with specific implementation cases.

[0018] A method for automatically finding the normal direction of a hole. Figure 1 It represents the flow chart of the method of finding the normal direction. Figure 1 In: 1 means the product is fixed to the processing position of the equipment, 2 means using the normal finding device built into the equipment to find the normal before drilling each hole, 3 means storing the normal value, hole identifier and hole position obtained from serial number 2 to form a normal file, 4 means the next processed product is fixed to the processing position, 5 means before processing, turn off the normal finding system built into the equipment, 6 means starting to run the CNC program, 7 means running the CNC program to read the hole identifier, hole position and processing hole function code program, where the processing hole function code program includes reading the normal data in the normal file to extract the existing normal, 8 means the equipment uses the adjusted normal to drill, 9 means judging whether the last hole has been processed, if not, run serial number 7, if yes, transfer to serial number 10, 10 means the program is finished and the product is processed. It includes the following steps:

[0019] (1) The product is fixed to the equipment processing position.

[0020] (2) Use the normal direction finding device that comes with the equipment to find the normal direction before drilling each hole.

[0021] (3) The normal value and hole position identifier obtained from sequence number 2 are stored to form a normal file.

[0022] (4) The products to be subsequently processed are fixed to the processing position.

[0023] (5) Before processing, turn off the equipment's normal search system.

[0024] (6) Start running the data program.

[0025] (7) Run the CNC program to read the hole identifier, hole position, and drilling code program, where the hole processing function code program includes reading the normal data in the normal file, enabling the program to obtain the normal, and adjusting the position of the equipment working head.

[0026] (8) The equipment uses the adjusted normal to drill.

[0027] (9) Determine whether the last hole has been processed. If not, run sequence number 7. If yes, transfer to sequence number 10.

[0028] (10) The program runs to the end and the product processing is completed.

[0029] The above-described embodiments merely express the implementation methods of the present invention, but they cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A method for automatically finding the normal direction of a hole, characterized in that: The implementation method comprises the following steps: Step 1: Obtain the hole identifier, hole position, and hole normal value of each processed hole of the product by processing the first product, and store the file with the above normal data, which is defined as the normal file; Step 2: Fix the second processed product to the processing position of the equipment, run the processing realization program of the CNC equipment, move the working head of the equipment to the first processing position to be drilled, compensate the normal direction at this position, perform the drilling action, and finally complete the hole processing; in this step, turn off the automatic normal direction finding device; Step 3: The equipment continues to make the next hole according to the program, that is, the equipment executes the processing implementation program, including the identifier and position of the next hole to be processed in the program, moves the equipment working head to the processing hole position, and executes the processing hole function code to obtain the normal and adjust the working head position to complete the processing of this hole. In this step, the automatic normal search device is turned off; Step 4: Repeat the contents of step 3 to complete all hole processing of the product, that is, complete the automatic drilling and automatic riveting work of this product; Step 5: Move this product out of the equipment processing area, move the next identical product to be processed into the equipment processing area for processing, and execute step 2.

2. The method for realizing automatic hole making and normal finding according to claim 1, characterized in that: The first step is specifically: fix the product to the equipment processing position, use the equipment's automatic normal search function to obtain the normal of each processed hole, and record the hole identifier, hole position and hole normal value in a file.

3. The method for realizing automatic hole making and normal finding according to claim 1, characterized in that: The second step is specifically as follows: the second processed product is the same as the first processed product, and the processing method is the same, that is, it is fixed to the same processing position of the equipment and uses the same processing implementation procedure.

4. The method for realizing automatic hole making and normal direction finding according to claim 3, characterized in that: The processing realization program includes each processing hole identifier, each processing hole position and each processing hole function code; the processing hole identifier and processing hole position are set before each processing hole function code; the processing hole function code obtains the normal value of the hole to be processed in the normal file according to the set processing hole identifier or processing hole position; the process of the equipment automatically making this hole or automatically drilling and riveting this hole is: the CNC equipment executes the hole identifier and hole position information in the program, moves the equipment working head to the position of the hole to be processed, the equipment continues to run the processing hole function code, corrects the working head position according to the normal value found, and finally processes this hole.

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