Mortise broach grinding method based on Siemens operating system

Abstract

The invention provides a grinding method for a mortise broach based on a Siemens operating system. The grinding method comprises the steps of profile grinding wheel dressing, through grinding and relief grinding of the broach. A numerical control program of the broach is compiled, and grinding wheel molded line finishing, molded surface through grinding and relief grinding machining in the broach machining process are achieved; carrying out grinding framework design and R parameter definition on the tongue-and-groove profile broach; the method comprises the following processing steps: on the basis of a Siemens one operating system instruction, compiling a broach processing numerical control program, and giving an instruction for reading a numerical value in an R assignment address in the program; a grinding wheel is installed, the diameter and thickness of the grinding wheel are determined through a board ruler step, and estimated numerical values are input into the position corresponding to the R address; calling a general grinding program to carry out general grinding processing on the molded surface of the broach; and a relief grinding program is called for broach profile relief angle machining. The grinding method has the advantages that the grinding method is a universal grinding method and comprises the steps of profile finishing, through grinding and relief grinding of the broach, the cost is reduced, and the grinding method is suitable for machining of all aero-engine mortise broaches.

Description

Technical Field

[0001] The present invention relates to the technical field of general broach grinding, and particularly relates to a grinding method for a tenon groove broach based on a Siemens operating system. Background Art

[0002] An aeroengine is the heart of an aircraft, and the disk, as an indispensable important rotating component in the aeroengine, has very strict requirements for its processing quality and service performance. The tenon groove, as the key connecting part between the blade and the disk, the integrity and accuracy of its machined surface directly affect the fitting firmness, force transmission effect, anti-fatigue damage and anti-creep performance of the tenon joint part of the turbine disk, and ultimately determine the service performance and life of the engine. The tenon grooves of the engine disks are all broached by special precision complete broaches. And the key process equipment for manufacturing broaches is all processed by imported CNC profile grinding machines. The core technology of the CNC profile grinding machine is a customized special module for broach grinding, including broach profile through-grinding, relieving grinding, grinding wheel dressing, and detecting key grinding methods, which can only be customized for single-machine use and has a high cost.

[0003] The present invention is a general broach grinding method, which is developed based on the broach grinding method under the Siemens one numerical control operating system. It is a general grinding method, including broach profile dressing, through-grinding, and relieving grinding, and is applicable to the processing of all aeroengine tenon groove broaches. Summary of the Invention

[0004] The object of the present invention is that the broach produced by using the operation method of the present invention meets the accuracy requirements of tenon groove processing, and the profile accuracy of the broach can reach within 0.005 mm; it has a high degree of automation, can complete grinding wheel dressing and broach profile grinding in one clamping, and is simple and convenient to operate.

[0005] The present invention provides a grinding method for a tenon groove broach based on a Siemens operating system, including broach profile grinding wheel dressing, through-grinding, and relieving grinding. Based on the functions of the Siemens one numerical control operating system, a numerical control program for the broach is compiled to realize the grinding wheel profile trimming, profile through-grinding, and relieving grinding during the broach processing.

[0006] 1) Grinding architecture design of the tenon groove profile broach

[0007] The grinding processing route of the tenon groove broach is as follows:

[0008] Trim the grinding wheel profile for broach processing according to the broach tooling design drawing → input broach parameters (number of teeth, tooth pitch, tooth rise amount, processing direction) → tool setting → profile through-grinding → profile relieving grinding → qualified for storage, as shown in Figure 9 .

[0009] 2) Definition of R parameters

[0010] Table 1 Definition Table of R Parameters of Siemens one Numerical Control Operating System

[0011]

[0012]

[0013]

[0014]

[0015]

[0016] 3) Machining Steps

[0017] 1) Based on the instructions of the Siemens one operating system, compile the numerical control program for broach machining. Given the instruction to read the value in the R assignment address in the program, and input the read value into the corresponding R parameter of the machine tool.

[0018] 2) Install the grinding wheel, use a scale to determine the diameter and thickness of the grinding wheel, and input the estimated value into the corresponding position of the R address.

[0019] 3) Call the through-grinding program to perform through-grinding machining on the broach profile.

[0020] 4) Call the relieving grinding program to perform back-angle machining on the broach profile.

[0021] Table 2 Definition of Grinding Program under Siemens one Numerical Control Operating System

[0022]

[0023]

[0024] Advantages of the Present Invention

[0025] The grinding method of the dovetail broach based on the Siemens operating system described in the present invention is a general grinding method, including profile dressing, through-grinding, and relieving grinding of the broach, achieving cost reduction and being applicable to the machining of all aero-engine dovetail broaches. Description of the Drawings

[0027] Figure 1 Grinding Setting Interface of the Broach

[0028] Figure 2 Workpiece Parameter Interface of the Broach

[0029] Figure 3 Machining Process Parameter Interface of the Broach

[0030] Figure 4 Profile Curve Grinding Wheel Dressing Interface of the Broach (Grinding Wheel and Dressing Process Interface)

[0031] Figure 5 Broach profile grinding wheel dressing interface (roller and grinding rod process interface);

[0032] Figure 6 Broach tool setting interface;

[0033] Figure 7 Broach profile through grinding interface;

[0034] Figure 8 Broach profile relieving grinding interface;

[0035] Figure 9 NC machining flow chart of broach. Specific implementation mode

[0036] The present invention will be further explained below in conjunction with specific implementation schemes, but the present invention is not limited thereto. The structures, ratios, and sizes shown in the drawings of the specification are only used to cooperate with the content disclosed in the specification for those skilled in the art to understand and read, and are not used to limit the implementation conditions of the present invention. Therefore, they do not have any technical substance. Any modification of the structure, change of the ratio relationship, or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in the present invention.

[0037] The following steps are carried out according to the broach tooling design drawing:

[0038] Dress the broach grinding wheel profile → Input broach parameters (number of teeth, tooth pitch, tooth rise amount, machining direction) → Tool setting → Profile through grinding machining → Profile relieving grinding machining → Qualified and warehoused,

[0039] 1) Call the main program L000 parameter setting to perform Figure 1 , Figure 2 , Figure 3 Interface R parameter assignment.

[0040]

[0041] 2) Call the subroutines L001, L820, L941 for grinding wheel dressing to perform Figure 4 , Figure 5 Interface R parameter assignment.

[0042]

[0043] 3) Call the subroutine L4 for tool setting to perform Figure 6 Interface R parameter assignment.

[0044]

[0045] 4) Call the subroutine L0 for through grinding setting and machining, and perform Figure 7 R parameter assignment for the interface.

[0046]

[0047] 5) Call the subroutine L1 for form grinding setting and machining, and perform Figure 8 R parameter assignment for the interface.

[0048]

[0049] 6) Sequentially call and run the programmed broach machining, grinding wheel dressing, tool setting, through grinding, and form grinding programs to complete broach machining.

[0050] Matters not covered by this invention are well-known technologies.

[0051] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A grinding method for a tenon groove broach based on the Siemens operating system, characterized in that: The described grinding method for a tenon groove broach based on the Siemens operating system includes the dressing of the form grinding wheel for the broach, through grinding, and relieving grinding; based on the functions of the Siemens one numerical control operating system, a numerical control program for the broach is compiled to achieve the dressing of the grinding wheel profile, form through grinding, and relieving grinding during the broach processing. The grinding architecture design and R parameter definition for the tenon groove form broach. The grinding processing route for the tenon groove broach is as follows: Dress the grinding wheel profile for broach processing according to the broach fixture design drawing → Input broach parameters, including the number of teeth, tooth pitch, tooth rise amount, and processing direction → Tool setting → Form through grinding processing → Form relieving grinding processing → Qualified for warehousing; Processing steps: 1) Based on the instructions of the Siemens one operating system, compile a numerical control program for broach processing, give an instruction in the program to read the value in the R assignment address, and input the read value into the corresponding R parameter of the machine tool. 2) Install the grinding wheel, use a scale to determine the diameter and thickness of the grinding wheel, and input the estimated value into the corresponding position of the R address. 3) Call the through grinding program to perform form through grinding processing on the broach. 4) Call the relieving grinding program to perform back angle processing on the broach form.

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