Method for improving reliability of five-axis machining center capable of automatically exchanging swing head libraries

Abstract

The invention belongs to the technical field of numerical control machine tools, and particularly relates to a method for improving the reliability of a five-axis machining center capable of automatically exchanging swinging head libraries. According to the technical scheme, the method for improving the reliability of the five-axis machining center capable of automatically exchanging the swing head libraries comprises the steps of head returning logic control, head taking logic control, head position I anti-misplacement detection, head position II anti-misplacement detection and head position III anti-misplacement detection. And the head taking control logic and the head returning control logic are matched with head position I anti-misplacement detection, head position II anti-misplacement detection and head position III anti-misplacement detection to judge the matching relationship between three A pendulums and the same C pendulum, and the identification signals between the A pendulums and the C pendulums are verified, so that the accuracy and reliability of pendulum head exchange are realized. According to the method for improving the reliability of the five-axis machining center capable of automatically exchanging the swing head libraries, the swing head exchanging reliability can be improved, automatic switching of different swing heads can be reliably achieved, swing head exchanging errors are avoided, and the machining requirement is met.

Description

Technical Field

[0001] The invention belongs to the technical field of numerically controlled machine tools, and in particular relates to a method for improving the reliability of an automatically exchangeable swing head library of a five-axis machining center. Background Art

[0002] Modern manufacturing has very high requirements for automation level, production efficiency and reliability, especially in the field of aerospace, where multiple materials such as aluminum alloy, titanium alloy, and composite materials are often integrated for the same component. In order to meet the needs of efficient processing, machine tools are required to be equipped with multiple performance swing heads to meet the processing of different parts and different parts materials. At the same time, with the improvement of automation level, multiple performance swing heads are required to realize automatic exchange function to avoid the problems of low efficiency and poor exchange accuracy consistency when manually exchanging swing heads. At the same time, because the processed parts integrate multiple special measurements and have the characteristics of high value, the reliability of the exchange of interchangeable swing heads must be guaranteed to avoid significant economic losses. Summary of the invention

[0003] The present invention provides a method for improving the reliability of an automatically exchangeable swing head library of a five-axis machining center, which can improve the reliability of swing head exchange, reliably realize automatic switching of different swing heads, avoid swing head exchange errors, and meet machining requirements.

[0004] The technical solution of the present invention is as follows:

[0005] A method for improving the reliability of a head library capable of automatically exchanging pendulum heads in a five-axis machining center comprises head return logic control, head fetching logic control, head position I anti-misplacement detection, head position II anti-misplacement detection and head position III anti-misplacement detection; the head fetching control logic and the head return control logic cooperate with the head position I anti-misplacement detection, head position II anti-misplacement detection and head position III anti-misplacement detection to complete the determination of the matching relationship between three A pendulums and the same C pendulum, and verify with the identification signals between the A and C pendulums to achieve accurate and reliable exchange of pendulum heads.

[0006] Furthermore, the method for improving the reliability of the automatically exchangeable swing head head warehouse of the five-axis machining center comprises a head warehouse bracket, three warehouse bodies, a support unit, a mounting frame, an in-place judgment switch system and an anti-error detection switch system, the three warehouse bodies are installed side by side on the head warehouse bracket, each warehouse body is provided with a support unit, and the in-place judgment switch system and the anti-error detection switch system are respectively arranged at the three warehouse bodies through the mounting frame.

[0007] Furthermore, the method for improving the reliability of the automatically interchangeable headstock of the five-axis machining center is as follows: the in-place discrimination switch system includes discrimination switch I, discrimination switch II and discrimination switch III, and discrimination switch I, discrimination switch II and discrimination switch III are contact switches; the error prevention detection switch system includes error prevention detection switch I, error prevention detection switch II and error prevention detection switch III, and error prevention detection switch I and error prevention detection switch II are long-stroke detection switches and use diffuse reflection photoelectric sensors, and error prevention detection switch III is a short-stroke detection switch and uses conventional photoelectric sensors.

[0008] Furthermore, in the method for improving the reliability of the automatically exchangeable swing head warehouse of the five-axis machining center, the discrimination switch I and the error-proofing detection switch I are arranged at the warehouse body located in the middle as head position I for placing the swing head I; the discrimination switch II and the error-proofing detection switch II are arranged at the warehouse body located on the left side as head position II for placing the swing head II; the discrimination switch III and the error-proofing detection switch III are arranged at the warehouse body located on the right side as head position III for placing the swing head III.

[0009] Furthermore, the method for improving the reliability of the automatic exchangeable headstock of the five-axis machining center is also controlled by the head logic as follows:

[0010] When the system executes the return instruction, it first determines the head number on the machine;

[0011] When the machine is in the swing head Ⅰ, it is necessary to return the head to the head position Ⅰ. At this time, the discrimination switch Ⅰ is used to determine whether there is a swing head in the head position Ⅰ. When the discrimination switch Ⅰ signal is 1, it means that there is a swing head in the head position Ⅰ, an error occurs, and the feedback system alarms. It is necessary to further check the discrimination switch and the A and C swing matching signals; when the discrimination switch Ⅰ signal is 0, it means that there is no head in the head position Ⅰ, and the head can be replaced; the next step is to perform the head position Ⅰ anti-misplacement detection;

[0012] When the machine is in the swing head II, it is necessary to return the head to the head position II. At this time, the discrimination switch II is used to determine whether there is a swing head in the head position II. When the discrimination switch II signal is 1, it means that there is a swing head in the head position II, and an error occurs. The feedback system alarms and further checks are required for the discrimination switch and the A and C swing matching signals; when the discrimination switch II signal is 0, it means that there is no head in the head position II and the head can be replaced; the next step is to perform the head position II anti-misplacement detection;

[0013] When the machine is in the swing head III, it is necessary to return the head to head position III. At this time, the discrimination switch III is used to determine whether there is a swing head in head position III. When the discrimination switch III signal is 1, it indicates that there is a swing head in head position III and an error occurs. The feedback system alarms and further checks are required on the discrimination switch and A and C swing matching signals. When the discrimination switch III signal is 0, it indicates that there is no head in head position III and the head can be replaced. The next step is to perform head position III anti-misplacement detection.

[0014] Furthermore, the method for improving the reliability of the head library of the five-axis machining center that can automatically exchange the head is controlled by the head taking logic as follows:

[0015] When the system executes the head-taking instruction, it first determines the pre-taken swing head sequence number; swing head I is provided with a number one detection switch I, swing head II is provided with a number one detection switch II, and swing head III is provided with a number one detection switch III;

[0016] When pre-taking swing head Ⅰ, it is necessary to read the signal of discrimination switch Ⅰ and the signal of number one detection switch Ⅰ. When the signal of discrimination switch Ⅰ is 1 and the signal of number one detection switch Ⅰ is 1, it means that there is a swing head at head position Ⅰ, and it is swing head Ⅰ, and the head can be taken; if the signal of the discrimination switch is 0 or the signal of number one detection switch is 0, it means that there is an error, and the alarm is checked;

[0017] When pre-fetching the swing head II, it is necessary to read the discrimination switch II signal and the number one detection switch II signal. If the discrimination switch II signal is 1, the number one detection switch II signal is 0, and other discrimination switches and the number one detection switch are normal, it means that there is a swing head in the head position II, and it is the swing head II, and the head can be taken; if the discrimination switch II signal is 0, the number one detection switch II signal is 1, or other discrimination switches and the number one detection switch are abnormal, it means that there is an error, and an alarm should be checked;

[0018] When pre-taking the swing head III, it is necessary to read the discrimination switch III signal and the number one detection switch III signal. When the discrimination switch III signal is 1, the number one detection switch III signal is 0, and other discrimination switches and the number one detection switch are normal, it means that there is a swing head in head position III, and it is the swing head III, and the head can be taken; if the discrimination switch III signal is 0, the number one detection switch III signal is 1, or other discrimination switches and the number one detection switch are abnormal, it means that there is an error, and an alarm should be checked.

[0019] Furthermore, the method for improving the reliability of the automatically exchangeable head library of the five-axis machining center, the anti-misplacement detection of head position I is as follows: when the discrimination switch I signal is 1, the anti-misplacement detection switch I signal is 1, indicating that the head position I is correctly matched and the head number is I; when the anti-misplacement detection switch I signal is 0, it indicates that the head position I is incorrectly matched and the serial number of the misplaced head needs to be further identified; the discrimination is performed through the discrimination switch II and the discrimination switch III signals, if the discrimination switch II signal is 0 and the discrimination switch III signal is 1, it indicates that the misplaced head position I is the swing head II; if the discrimination switch II signal is 1 and the discrimination switch III signal is 0, it indicates that the misplaced head position I is the swing head III.

[0020] Furthermore, the method for improving the reliability of the automatically exchangeable head library of the five-axis machining center, the head position II anti-misplacement detection is as follows: when the discrimination switch II signal is 1, the anti-misplacement detection switch II signal is 1, indicating that the head position II is mismatched, and the misplaced head number is 1; when the anti-misplacement detection switch II signal is 0, it is necessary to further discriminate the head number of the head position II; through the discrimination switch III, if the discrimination switch III signal is 0 and the machine's swing head is swing head II, it indicates that the head position II is misplaced as swing head III; if the discrimination switch III signal is 1, it indicates that the head position II is correctly matched and is swing head II.

[0021] Furthermore, the method for improving the reliability of the automatically exchangeable head library of the five-axis machining center, the head position III anti-misplacement detection is as follows: when the discrimination switch III signal is 1, the anti-misplacement detection switch III signal is 0, indicating that the head position III is correctly matched and is the swing head III; when the anti-misplacement detection switch III signal is 1, it indicates that the matching of the head position III is wrong, and the wrong swing head serial number needs to be further identified; the discrimination switch II is used for discrimination, if the discrimination switch II signal is 0 and the machine swing head is the swing head III, it indicates that the head position III is misplaced as the swing head II; if the discrimination switch II signal is 1, it indicates that the head position III is misplaced as the swing head I.

[0022] The beneficial effects of the present invention are as follows: the present invention can improve the reliability of automatically exchangeable head exchanges, avoid the problem of poor reliability of head exchange when relying solely on head A and head C exchange recognition signals, and prevent the problem of head exchange errors caused by errors or failures of head exchange recognition signals; thereby avoiding the risk of huge economic losses caused by head exchange errors when processing high-value parts; the anti-misplacement detection method ensures the smooth implementation and practical application of the automatic exchange function of the head, and promotes the application of five-axis machine tools equipped with automatically exchangeable heads in high-end fields such as aerospace. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the automatic exchangeable swing head library;

[0024] Figure 2 A schematic diagram of placing three swing heads in the automatically exchangeable swing head library;

[0025] Figure 3 It is a logical flow chart;

[0026] Figure 4 It is the logic flow chart of taking the head;

[0027] Figure 5 This is the logic flow chart of head position I anti-misplacement detection;

[0028] Figure 6 This is the logic flow chart of head position II anti-misplacement detection;

[0029] Figure 7This is the logic flow chart of the head position III anti-misplacement detection. DETAILED DESCRIPTION

[0030] like Figure 1-7 As shown, a method for improving the reliability of the head library of the five-axis machining center that can automatically exchange pendulum heads includes head return logic control, head taking logic control, head position I anti-misplacement detection, head position II anti-misplacement detection and head position III anti-misplacement detection; the head taking control logic and the head return control logic cooperate with the head position I anti-misplacement detection, head position II anti-misplacement detection and head position III anti-misplacement detection to complete the judgment of the matching relationship between three A pendulums and the same C pendulum, and verify with the identification signal between the A and C pendulums to achieve accurate and reliable exchange of pendulum heads.

[0031] The head warehouse capable of automatically exchanging the head swinging head comprises a head warehouse bracket 1, three warehouse bodies 2, a support unit 3, a mounting frame 4, an in-place discrimination switch system and an anti-error detection switch system. The three warehouse bodies 2 are mounted side by side on the head warehouse bracket 1, and each warehouse body 2 is provided with a support unit 3. The in-place discrimination switch system and the anti-error detection switch system are respectively arranged at the three warehouse bodies 2 through the mounting frame 4; the in-place discrimination switch system comprises a discrimination switch Ⅰ5, a discrimination switch Ⅱ6 and a discrimination switch Ⅲ7, and the discrimination switch Ⅰ5, the discrimination switch Ⅱ6 and the discrimination switch Ⅲ7 are contact switches; the anti-error detection switch relationship The system includes an anti-error detection switch I8, an anti-error detection switch II9 and an anti-error detection switch III10. The anti-error detection switch I8 and the anti-error detection switch II9 are long-stroke detection switches and adopt diffuse reflection photoelectric sensors. The anti-error detection switch III10 is a short-stroke detection switch and adopts a conventional photoelectric sensor. The diffuse reflection photoelectric sensor has a long measuring stroke and is adjustable, and has strong adaptability to the appearance and size specifications of the swing head. The conventional photoelectric sensor is used for head position III anti-misplacement detection, which is low in cost and has a reliable effect for anti-misplacement detection of the head position whose appearance characteristics are obviously different from those of the other two swing heads.

[0032] The discrimination switch Ⅰ5 and the anti-error detection switch Ⅰ8 are arranged at the warehouse body 2 located in the middle as the head position Ⅰ11, for placing the swing head Ⅰ14; the discrimination switch Ⅱ6 and the anti-error detection switch Ⅱ9 are arranged at the warehouse body 2 located on the left as the head position Ⅱ12, for placing the swing head Ⅱ15; the discrimination switch Ⅲ7 and the anti-error detection switch Ⅲ10 are arranged at the warehouse body 2 located on the right as the head position Ⅲ13, for placing the swing head Ⅲ16.

[0033] The logic control is as follows:

[0034] When the system executes the return instruction, it first determines the head number on the machine;

[0035] When the machine is in the swing head Ⅰ, it is necessary to return the head to the head position Ⅰ. At this time, the discrimination switch Ⅰ is used to determine whether there is a swing head in the head position Ⅰ. When the discrimination switch Ⅰ signal is 1, it means that there is a swing head in the head position Ⅰ, an error occurs, and the feedback system alarms. It is necessary to further check the discrimination switch and the A and C swing matching signals; when the discrimination switch Ⅰ signal is 0, it means that there is no head in the head position Ⅰ, and the head can be replaced; the next step is to perform the head position Ⅰ anti-misplacement detection;

[0036] When the machine is in the swing head II, it is necessary to return the head to the head position II. At this time, the discrimination switch II is used to determine whether there is a swing head in the head position II. When the discrimination switch II signal is 1, it means that there is a swing head in the head position II, and an error occurs. The feedback system alarms and further checks are required for the discrimination switch and the A and C swing matching signals; when the discrimination switch II signal is 0, it means that there is no head in the head position II and the head can be replaced; the next step is to perform the head position II anti-misplacement detection;

[0037] When the machine is in the swing head III, it is necessary to return the head to head position III. At this time, the discrimination switch III is used to determine whether there is a swing head in head position III. When the discrimination switch III signal is 1, it indicates that there is a swing head in head position III and an error occurs. The feedback system alarms and further checks are required on the discrimination switch and A and C swing matching signals. When the discrimination switch III signal is 0, it indicates that there is no head in head position III and the head can be replaced. The next step is to perform head position III anti-misplacement detection.

[0038] The logic control of taking the head is as follows:

[0039] When the system executes the head-taking instruction, it first determines the pre-taken swing head sequence number; swing head I is provided with a number one detection switch I, swing head II is provided with a number one detection switch II, and swing head III is provided with a number one detection switch III;

[0040] When pre-taking swing head Ⅰ, it is necessary to read the signal of discrimination switch Ⅰ and the signal of number one detection switch Ⅰ. When the signal of discrimination switch Ⅰ is 1 and the signal of number one detection switch Ⅰ is 1, it means that there is a swing head at head position Ⅰ, and it is swing head Ⅰ, and the head can be taken; if the signal of the discrimination switch is 0 or the signal of number one detection switch is 0, it means that there is an error, and the alarm is checked;

[0041] When pre-fetching the swing head II, it is necessary to read the discrimination switch II signal and the number one detection switch II signal. If the discrimination switch II signal is 1, the number one detection switch II signal is 0, and other discrimination switches and the number one detection switch are normal, it means that there is a swing head in the head position II, and it is the swing head II, and the head can be taken; if the discrimination switch II signal is 0, the number one detection switch II signal is 1, or other discrimination switches and the number one detection switch are abnormal, it means that there is an error, and an alarm should be checked;

[0042] When pre-taking the swing head III, it is necessary to read the discrimination switch III signal and the number one detection switch III signal. When the discrimination switch III signal is 1, the number one detection switch III signal is 0, and other discrimination switches and the number one detection switch are normal, it means that there is a swing head in head position III, and it is the swing head III, and the head can be taken; if the discrimination switch III signal is 0, the number one detection switch III signal is 1, or other discrimination switches and the number one detection switch are abnormal, it means that there is an error, and an alarm should be checked.

[0043] The detection for preventing misplacement of head position Ⅰ is as follows: when the signal of discrimination switch Ⅰ is 1, the signal of anti-misplacement detection switch Ⅰ is 1, indicating that the matching of the swing head in head position Ⅰ is correct and the head number is Ⅰ; when the signal of anti-misplacement detection switch Ⅰ is 0, it indicates that the matching of the swing head in head position Ⅰ is incorrect and further identification of the serial number of the misplaced swing head is required; through the signals of discrimination switch Ⅱ and discrimination switch Ⅲ, if the signal of discrimination switch Ⅱ is 0 and the signal of discrimination switch Ⅲ is 1, it indicates that the misplaced head in head position Ⅰ is swing head Ⅱ; if the signal of discrimination switch Ⅱ is 1 and the signal of discrimination switch Ⅲ is 0, it indicates that the misplaced head in head position Ⅰ is swing head Ⅲ.

[0044] The detection of head position II to prevent misplacement is as follows: when the signal of discrimination switch II is 1, the signal of anti-misplacement detection switch II is 1, indicating that the head position II is incorrectly matched and the serial number of the misplaced head is 1; when the signal of anti-misplacement detection switch II is 0, it is necessary to further discriminate the serial number of the head position II; through discrimination switch III, if the signal of discrimination switch III is 0 and the machine's swing head is swing head II, it indicates that the head position II is misplaced as swing head III; if the signal of discrimination switch III is 1, it indicates that the head position II is correctly matched and is swing head II.

[0045] The detection for preventing misplacement of head position III is as follows: when the signal of discrimination switch III is 1, the signal of anti-misplacement detection switch III is 0, indicating that the matching of head position III is correct and it is head III; when the signal of anti-misplacement detection switch III is 1, it indicates that the matching of head position III is wrong and further discrimination of the wrong head number is required; discrimination is performed through discrimination switch II. If the signal of discrimination switch II is 0 and the machine's swing head is head III, it indicates that the head position III is misplaced as head II; if the signal of discrimination switch II is 1, it indicates that the head position III is misplaced as head I.

Claims

1. A method for improving the reliability of a five-axis machining center that can automatically exchange a swing head library, characterized in that: It includes head return logic control, head taking logic control, head position I anti-misplacement detection, head position II anti-misplacement detection and head position III anti-misplacement detection; the head taking control logic and head return control logic cooperate with the head position I anti-misplacement detection, head position II anti-misplacement detection and head position III anti-misplacement detection to complete the judgment of the matching relationship between the three A pendulums and the same C pendulum, and verify with the identification signals between the A and C pendulums to achieve accurate and reliable pendulum head exchange.

2. The method for improving the reliability of the automatic exchangeable headstock of the five-axis machining center according to claim 1 is characterized in that: The automatically interchangeable head warehouse includes a head warehouse bracket, three warehouse bodies, a support unit, a mounting frame, an in-place discrimination switch system and an anti-error detection switch system. The three warehouse bodies are installed side by side on the head warehouse bracket, and each warehouse body is provided with a support unit. The in-place discrimination switch system and the anti-error detection switch system are respectively arranged on the three warehouse bodies through the mounting frame.

3. The method for improving the reliability of the automatic exchangeable headstock of the five-axis machining center according to claim 2 is characterized in that: The in-place discrimination switch system includes discrimination switch I, discrimination switch II and discrimination switch III, and the discrimination switch I, discrimination switch II and discrimination switch III are contact switches; The error-proofing detection switch system includes error-proofing detection switch I, error-proofing detection switch II and error-proofing detection switch III. Error-proofing detection switch I and error-proofing detection switch II are long-stroke detection switches and adopt diffuse reflection photoelectric sensors. Error-proofing detection switch III is a short-stroke detection switch and adopts conventional photoelectric sensors.

4. The method for improving the reliability of the automatic exchangeable headstock of the five-axis machining center according to claim 3 is characterized in that: The discrimination switch Ⅰ and the anti-error detection switch Ⅰ are arranged at the warehouse body located in the middle as the head position Ⅰ, which is used to place the swing head Ⅰ; the discrimination switch Ⅱ and the anti-error detection switch Ⅱ are arranged at the warehouse body located on the left as the head position Ⅱ, which is used to place the swing head Ⅱ; the discrimination switch Ⅲ and the anti-error detection switch Ⅲ are arranged at the warehouse body located on the right as the head position Ⅲ, which is used to place the swing head Ⅲ.

5. The method for improving the reliability of the automatic exchangeable headstock of the five-axis machining center according to claim 4 is characterized in that: The logic control is as follows: When the system executes the return instruction, it first determines the head number on the machine; When the machine is in the swing head Ⅰ, it is necessary to return the head to the head position Ⅰ. At this time, the discrimination switch Ⅰ is used to determine whether there is a swing head in the head position Ⅰ. When the discrimination switch Ⅰ signal is 1, it means that there is a swing head in the head position Ⅰ, an error occurs, and the feedback system alarms. It is necessary to further check the discrimination switch and the A and C swing matching signals; when the discrimination switch Ⅰ signal is 0, it means that there is no head in the head position Ⅰ, and the head can be replaced; the next step is to perform the head position Ⅰ anti-misplacement detection; When the machine is in the swing head II, it is necessary to return the head to the head position II. At this time, the discrimination switch II is used to determine whether there is a swing head in the head position II. When the discrimination switch II signal is 1, it means that there is a swing head in the head position II, and an error occurs. The feedback system alarms and further checks are required for the discrimination switch and the A and C swing matching signals; when the discrimination switch II signal is 0, it means that there is no head in the head position II and the head can be replaced; the next step is to perform the head position II anti-misplacement detection; When the machine is in the swing head III, it is necessary to return the head to head position III. At this time, the discrimination switch III is used to determine whether there is a swing head in head position III. When the discrimination switch III signal is 1, it indicates that there is a swing head in head position III and an error occurs. The feedback system alarms and further checks are required on the discrimination switch and A and C swing matching signals. When the discrimination switch III signal is 0, it indicates that there is no head in head position III and the head can be replaced. The next step is to perform head position III anti-misplacement detection.

6. The method for improving the reliability of the automatic exchangeable headstock of a five-axis machining center according to claim 4 is characterized in that: The logic control of taking the head is as follows: When the system executes the head-taking instruction, it first determines the pre-taken swing head sequence number; swing head I is provided with a number one detection switch I, swing head II is provided with a number one detection switch II, and swing head III is provided with a number one detection switch III; When pre-taking swing head Ⅰ, it is necessary to read the signal of discrimination switch Ⅰ and the signal of number one detection switch Ⅰ. When the signal of discrimination switch Ⅰ is 1 and the signal of number one detection switch Ⅰ is 1, it means that there is a swing head at head position Ⅰ, and it is swing head Ⅰ, and the head can be taken; if the signal of the discrimination switch is 0 or the signal of number one detection switch is 0, it means that there is an error, and the alarm is checked; When pre-fetching the swing head II, it is necessary to read the discrimination switch II signal and the number one detection switch II signal. If the discrimination switch II signal is 1, the number one detection switch II signal is 0, and other discrimination switches and the number one detection switch are normal, it means that there is a swing head in the head position II, and it is the swing head II, and the head can be taken; if the discrimination switch II signal is 0, the number one detection switch II signal is 1, or other discrimination switches and the number one detection switch are abnormal, it means that there is an error, and an alarm should be checked; When pre-taking the swing head III, it is necessary to read the discrimination switch III signal and the number one detection switch III signal. When the discrimination switch III signal is 1, the number one detection switch III signal is 0, and other discrimination switches and the number one detection switch are normal, it means that there is a swing head in head position III, and it is the swing head III, and the head can be taken; if the discrimination switch III signal is 0, the number one detection switch III signal is 1, or other discrimination switches and the number one detection switch are abnormal, it means that there is an error, and an alarm should be checked.

7. The method for improving the reliability of the automatic exchangeable headstock of a five-axis machining center according to claim 4 is characterized in that: The detection for preventing misplacement of head position Ⅰ is as follows: when the signal of discrimination switch Ⅰ is 1, the signal of anti-misplacement detection switch Ⅰ is 1, indicating that the matching of the swing head in head position Ⅰ is correct and the head number is Ⅰ; when the signal of anti-misplacement detection switch Ⅰ is 0, it indicates that the matching of the swing head in head position Ⅰ is incorrect and further identification of the serial number of the misplaced swing head is required; through the signals of discrimination switch Ⅱ and discrimination switch Ⅲ, if the signal of discrimination switch Ⅱ is 0 and the signal of discrimination switch Ⅲ is 1, it indicates that the misplaced head in head position Ⅰ is swing head Ⅱ; if the signal of discrimination switch Ⅱ is 1 and the signal of discrimination switch Ⅲ is 0, it indicates that the misplaced head in head position Ⅰ is swing head Ⅲ.

8. The method for improving the reliability of the automatic exchangeable headstock of a five-axis machining center according to claim 4 is characterized in that: The detection of head position II to prevent misplacement is as follows: when the signal of discrimination switch II is 1, the signal of anti-misplacement detection switch II is 1, indicating that the head position II is incorrectly matched and the serial number of the misplaced head is 1; when the signal of anti-misplacement detection switch II is 0, it is necessary to further discriminate the serial number of the head position II; through discrimination switch III, if the signal of discrimination switch III is 0 and the machine's swing head is swing head II, it indicates that the head position II is misplaced as swing head III; if the signal of discrimination switch III is 1, it indicates that the head position II is correctly matched and is swing head II.

9. The method for improving the reliability of the automatic exchangeable headstock of a five-axis machining center according to claim 4 is characterized in that: The detection for preventing misplacement of head position III is as follows: when the signal of discrimination switch III is 1, the signal of anti-misplacement detection switch III is 0, indicating that the matching of head position III is correct and it is head III; when the signal of anti-misplacement detection switch III is 1, it indicates that the matching of head position III is wrong and further discrimination of the wrong head number is required; discrimination is performed through discrimination switch II. If the signal of discrimination switch II is 0 and the machine's swing head is head III, it indicates that the head position III is misplaced as head II; if the signal of discrimination switch II is 1, it indicates that the head position III is misplaced as head I.

Images