Automatic processing center for large-size angle steel in UHV projects

Abstract

The present invention discloses an automatic processing center for large-size angle steels for ultra-high voltage projects, comprising the following steps: loading: placing the angle steel on a loading rack, transporting it to a limiting mechanism along a loading conveyor belt, then clamping and fixing both sides of the angle steel, and then cutting the angle steel by laser using a laser cutting machine; making holes: making holes on both limbs of the angle steel by a five-axis drilling machine, and stamping them with a steel stamp; then, moving the angle steel to the vicinity of the next hole point, clamping both sides of the angle steel, and completing the hole making work; making a hole judgment on the angle steel, and if there is no hole drilled at the corresponding position on the angle steel, continuing to complete the hole making work according to the above steps; if there is a hole drilled at the corresponding position on the angle steel, moving the angle steel to the other end, clamping both sides of the angle steel, cutting the material by laser, moving the angle steel to a unloading rack, flipping the rack, and the workpiece into a finished product. The present invention ensures that the angle steel is precisely located at the processing station, ensures the accuracy of the angle steel processing, and improves the quality of the angle steel processing.

Description

Technical Field

[0001] The present invention relates to the technical field of ultra-high voltage engineering, and in particular to an automatic processing center for large-size angle steels in ultra-high voltage engineering. Background Art

[0002] Chinese patent CN110814774A discloses a fully automatic angle steel processing device, comprising a shot blasting machine, a diversion platform for diverting different types of angle steel, two processing conveyor belts, one or more punching and cutting integrated dies arranged on the side of each processing conveyor belt, one or more punching and conveying mechanisms for conveying the angle steel on the processing conveyor belts to the corresponding punching and cutting integrated dies, one or more stacking mechanisms for placing the processed angle steel, a waste collection system for collecting waste, and a device controller for communicating and controlling various components;

[0003] In the existing technology, when processing large-sized angle steel, the method usually adopted is to convey the angle steel along the loading rack, then use the drilling machine to drill the holes, and then convey it out through the unloading rack. During the drilling process, the placement position of the angle steel and the working status of the drilling machine cannot be monitored and analyzed in real time, which leads to the problem of a relatively low defective rate of the angle steel. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems of the above-mentioned background technology and to propose an automatic processing center for large-size angle steels in ultra-high voltage projects.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] Automatic processing center for large-size angle steel for UHV projects, including:

[0007] Loading: Place the angle steel on the loading rack and transport it along the loading conveyor belt to the limit mechanism. Then, clamp both sides of the angle steel and fix it, and then use the laser cutting machine to cut the angle steel into pieces.

[0008] Hole making: After drilling holes on both sides of the angle steel using a five-axis drilling machine and stamping them, the angle steel is moved to the vicinity of the next hole point, and then the two sides of the angle steel are clamped to complete the hole making work.

[0009] Check the angle steel for drilling. If there is no hole at the corresponding position on the angle steel, continue to complete the hole making work according to the above steps. If there is a hole at the corresponding position on the angle steel, move the angle steel to the other end, clamp both sides of the angle steel, and use laser to cut the material. Move the angle steel to the unloading rack, flip the rack, and the workpiece enters the finished product area.

[0010] As a further solution of the present invention: the angle steel is positioned by a positioning system during the loading process, and the positioning system includes:

[0011] The acquisition unit uses the base supporting the angle steel as a plane to construct a rectangular coordinate system, obtains the coordinate values ​​of the center points of the end faces of the angle steel, the coordinate values ​​of the center point of the angle steel, and the angles between the angle steel and the X-axis, Y-axis, and Z-axis respectively;

[0012] The analysis unit calculates the data obtained by the acquisition unit to obtain the positioning value of the angle steel, and judges whether the processing position of the angle steel meets the process requirements based on the positioning value.

[0013] As a further solution of the present invention: the specific working process of the analysis unit is as follows:

[0014] Step 1: Mark the coordinates of the center point of the first end face as (X1, Y1, Z1), the coordinates of the center point of the second end face as (X2, Y2, Z2), and the coordinates of the center of the angle steel as (X3, Y3, Z3); Using the formula Calculate the first positioning coefficient value X1 of the angle steel;

[0015] Step 2: Mark the angle between the angle steel and the X-axis as Jx, the angle between the angle steel and the Y-axis as Jy, and the angle between the angle steel and the Z-axis as Jz.

[0016] Using the formula The second positioning coefficient value X2 of the angle steel is calculated;

[0017] Step 3: The first positioning coefficient value X1 and the second positioning coefficient value X2 of the angle steel are obtained by the formula Calculate the angle steel positioning value Zd;

[0018] Step 4: Compare the obtained angle steel positioning value Zd with the angle steel positioning threshold.

[0019] As a further solution of the present invention: if the angle steel positioning value Zd is greater than the angle steel positioning threshold, an angle steel position adjustment signal is generated; if the angle steel positioning value Zd is less than the angle steel positioning threshold, an angle steel position qualified signal is generated.

[0020] As a further solution of the present invention: the feedback unit receives the angle steel position adjustment signal and the angle steel position qualification signal from the analysis unit, and when the angle steel position adjustment signal is obtained, the angle steel position is adjusted until the obtained angle steel positioning value Zd meets the requirements; when the angle steel position qualification signal is obtained, the drilling machine is controlled to work.

[0021] As a further solution of the present invention: during the hole making process, the angle steel is drilled by a hole making system, and the hole making system includes:

[0022] The monitoring unit obtains the drilling position data of the drilling machine and the coordinate data of the hole position on the angle steel, performs comparison analysis, and monitors the drilling machine in real time while drilling, thus avoiding position errors that may lead to unqualified hole positions.

[0023] The drilling rig control unit receives position offset signals, position alarm signals, and shutdown signals. When a position offset signal is received, the drilling rig can be controlled to continue drilling the angle steel. When a position alarm signal is received, the power of the drilling rig will be reduced and the alarm will be started at the same time. When a shutdown signal is received, the drilling rig will be controlled to stop working.

[0024] As a further solution of the present invention: the specific working process of the monitoring system is as follows:

[0025] Step 1: Obtain the first drilling position W1, the second drilling position W2 and the third drilling position W3 of the drilling machine; at the same time, obtain the coordinate values ​​of the hole positions;

[0026] The first drilling position W1 is represented by a coordinate value along the X-axis, the second drilling position W2 is represented by a coordinate value along the Y-axis, and the third drilling position W3 is represented by a coordinate value along the Z-axis.

[0027] Calculate the differences between the first drilling position W1, the second drilling position W2 and the third drilling position W3 and the corresponding axis coordinate values ​​of the hole positions, and obtain the first drilling distance difference C1, the second drilling distance difference C2 and the third drilling distance difference C3;

[0028] Step 2: Obtain the error range of the drilling position. If the first drilling distance difference C1, the second drilling distance difference C2, and the third drilling distance difference C3 are within the linear speed error range, no operation is performed. If the first drilling distance difference C1, the second drilling distance difference C2, and the third drilling distance difference C3 are not within the linear speed error range, proceed to the next step.

[0029] Step 3: Substitute the first drilling distance difference C1, the second drilling distance difference C2 and the third drilling distance difference C3 into the formula Pc=αln(d1*C1+d2*C2+d3*C3) to calculate the deviation value Pc.

[0030] As a further solution of the present invention: if Pc≤Y1, a position offset signal is generated; if Y1<Pc≤Y2, a position alarm signal is generated; if Y2<Pc, a stop signal is generated; wherein Y1 and Y2 are both deviation thresholds, and Y1<Y2.

[0031] As a further solution of the present invention: a detection system is provided on the blanking rack, and the detection system includes:

[0032] The detection unit collects hole position images on the drilled angle steel, analyzes the image data, and determines whether the holes drilled in the angle steel meet the process requirements;

[0033] The specific working process of the detection unit is as follows:

[0034] Step 1: Obtain the curvature value of each borehole and mark it as Zw. Calculate the difference between the curvature value Zw and the standard curvature value Zwb to obtain the curvature difference Cq;

[0035] Set several curvature difference coefficients and mark them as Kc; c = 1, 2, ..., w; and K1 < K2 < ... < Kw; each curvature difference coefficient Kc corresponds to a preset compressive strength difference range, which are (k1, k2], (k2, k3], ..., (kw, kw+1]; and k1 < k2 < ... < kw < kw+1;

[0036] When Cq∈(kw, kw+1], the curvature difference coefficient corresponding to the preset curvature difference range is Kw;

[0037] Step 2: Use the formula Yq = Cq * Kw to calculate the curvature value Yq of the drill hole;

[0038] The borehole tortuosity value Yq is compared with a borehole tortuosity threshold value.

[0039] As a further solution of the present invention: if the curvature value Yq of the drill hole is greater than the curvature threshold of the drill hole, it means that the drill hole is unqualified and needs to be reprocessed;

[0040] If the curvature value Yq of the drill hole is less than the curvature threshold of the drill hole, it means that the drill hole is qualified.

[0041] Beneficial effects of the present invention:

[0042] (1) The present invention uses a collection unit, an analysis unit, and a feedback unit to perform position comparison analysis on the angle steel to be processed, thereby ensuring that the angle steel is accurately located at the processing position, ensuring the accuracy of the angle steel processing, and improving the quality of the angle steel processing;

[0043] (2) The present invention uses a monitoring unit and a drilling rig control unit to perform real-time monitoring and analysis of the angle steel during drilling, thereby ensuring accuracy during drilling and further improving the quality of angle steel processing. At the same time, the processed angle steel is further inspected through a subsequent detection unit to ensure the quality of angle steel processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The present invention will be further described below with reference to the accompanying drawings.

[0045] Figure 1 It is a flowchart of the present invention;

[0046] Figure 2 It is a flow chart of the positioning system and hole making system of the present invention. DETAILED DESCRIPTION

[0047] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0048] See also Figure 1-2 As shown, the present invention is an automatic processing center for large-size angle steels for ultra-high voltage projects, comprising:

[0049] Loading: Place the angle steel on the loading rack and transport it along the loading conveyor belt to the limit mechanism. Then, clamp both sides of the angle steel and fix it, and then use the laser cutting machine to cut the angle steel into pieces.

[0050] Among them, the angle steel is positioned during the loading process through a positioning system, which includes:

[0051] The acquisition unit uses the base supporting the angle steel as a plane to construct a rectangular coordinate system, obtains the coordinate values ​​of the center points of the end faces of the angle steel, the coordinate values ​​of the center point of the angle steel, and the angles between the angle steel and the X-axis, Y-axis, and Z-axis respectively;

[0052] The analysis unit calculates the data obtained by the acquisition unit to obtain the positioning value of the angle steel, and judges whether the processing position of the angle steel meets the process requirements based on the positioning value;

[0053] The specific working process of the analysis unit is as follows:

[0054] Step 1: Mark the coordinates of the center point of the first end face as (X1, Y1, Z1), the coordinates of the center point of the second end face as (X2, Y2, Z2), and the coordinates of the center of the angle steel as (X3, Y3, Z3); Using the formula The first positioning coefficient value X1 of the angle steel is calculated; where β is the proportional coefficient and its value is 3.25;

[0055] Step 2: Mark the angle between the angle steel and the X-axis as Jx, the angle between the angle steel and the Y-axis as Jy, and the angle between the angle steel and the Z-axis as Jz.

[0056] Using the formula The second positioning coefficient value X2 of the angle steel is calculated; among them, a1, a2, and a3 are all proportional coefficients, a1 is 0.54, a2 is 0.84, and a3 is 0.78;

[0057] Step 3: The first positioning coefficient value X1 and the second positioning coefficient value X2 of the angle steel are obtained by the formula The angle steel positioning value Zd is calculated; b1 and b2 are both proportional coefficients, b1 is 0.84, and b2 is 0.87;

[0058] Step 4: Compare the obtained angle steel positioning value Zd with the angle steel positioning threshold:

[0059] If the angle steel positioning value Zd is greater than the angle steel positioning threshold, it means that the current position of the angle steel deviates from the predetermined processing position, and the deviation is relatively large, which will cause a large error in the subsequent processing of the angle steel, resulting in a high rate of defective angle steel processing, and an angle steel position adjustment signal is generated;

[0060] If the angle steel positioning value Zd is less than the angle steel positioning threshold, it means that the angle steel is currently in the processing position and can be processed, and a qualified angle steel position signal is generated;

[0061] The feedback unit receives the angle steel position adjustment signal and the angle steel position qualified signal from the analysis unit. When the angle steel position adjustment signal is obtained, the angle steel position is adjusted until the obtained angle steel positioning value Zd meets the requirements; when the angle steel position qualified signal is obtained, the drilling machine is controlled to work;

[0062] Hole making: After drilling holes on both sides of the angle steel using a five-axis drilling machine and stamping them, the angle steel is moved to the vicinity of the next hole point, and then the two sides of the angle steel are clamped to complete the hole making work.

[0063] Check the angle steel for drilling holes. If there are no holes at the corresponding position on the angle steel, continue to complete the hole making work according to the above steps. If there are holes at the corresponding position on the angle steel, move the angle steel to the other end, clamp both sides of the angle steel, and cut the material with laser. Move the angle steel to the unloading rack, flip the rack, and the workpiece enters the finished product area.

[0064] During the hole making process, the angle steel is drilled by a hole making system, which includes:

[0065] The monitoring unit obtains the drilling position data of the drilling machine and the coordinate data of the hole position on the angle steel, performs comparison analysis, and monitors the drilling machine in real time while drilling, thus avoiding position errors that may lead to unqualified hole positions.

[0066] The specific working process of the monitoring system is as follows:

[0067] Step 1: Obtain the first drilling position W1, the second drilling position W2 and the third drilling position W3 of the drilling machine; at the same time, obtain the coordinate values ​​of the hole positions;

[0068] The first drilling position W1 is represented by a coordinate value along the X-axis, the second drilling position W2 is represented by a coordinate value along the Y-axis, and the third drilling position W3 is represented by a coordinate value along the Z-axis.

[0069] Calculate the differences between the first drilling position W1, the second drilling position W2 and the third drilling position W3 and the corresponding axis coordinate values ​​of the hole positions, and obtain the first drilling distance difference C1, the second drilling distance difference C2 and the third drilling distance difference C3;

[0070] Step 2: Obtain the error range of the drilling position. If the first drilling distance difference C1, the second drilling distance difference C2, and the third drilling distance difference C3 are within the linear speed error range, no operation is performed. If the first drilling distance difference C1, the second drilling distance difference C2, and the third drilling distance difference C3 are not within the linear speed error range, proceed to the next step.

[0071] Step 3: Substitute the first drilling distance difference C1, the second drilling distance difference C2, and the third drilling distance difference C3 into the formula Pc=αln(d1*C1+d2*C2+d3*C3) to calculate the deviation value Pc; where α is the proportional coefficient, and α is 3.45;

[0072] Step 4: If Pc≤Y1, a position deviation signal is generated; if Y1<Pc≤Y2, a position alarm signal is generated; if Y2<Pc, a stop signal is generated; wherein Y1 and Y2 are both deviation thresholds, and Y1<Y2;

[0073] The drilling rig control unit receives a position offset signal, a position alarm signal, and a stop signal. When a position offset signal is received, the drilling rig can be controlled to continue drilling the angle steel. When a position alarm signal is received, the power of the drilling rig is reduced and the alarm is activated at the same time. When a stop signal is received, the drilling rig is controlled to stop working.

[0074] Preferably, a detection system is provided on the blanking rack, and the detection system includes:

[0075] The detection unit collects hole position images on the drilled angle steel, analyzes the image data, and determines whether the holes drilled in the angle steel meet the process requirements;

[0076] The specific working process of the detection unit is as follows:

[0077] Step 1: Obtain the curvature value of each borehole and mark it as Zw. Calculate the difference between the curvature value Zw and the standard curvature value Zwb to obtain the curvature difference Cq;

[0078] Set several curvature difference coefficients and mark them as Kc; c = 1, 2, ..., w; and K1 < K2 < ... < Kw; each curvature difference coefficient Kc corresponds to a preset compressive strength difference range, which are (k1, k2], (k2, k3], ..., (kw, kw+1]; and k1 < k2 < ... < kw < kw+1;

[0079] When Cq∈(kw, kw+1], the curvature difference coefficient corresponding to the preset curvature difference range is Kw;

[0080] Step 2: Use the formula Yq = Cq * Kw to calculate the curvature value Yq of the drill hole;

[0081] Comparing the borehole curvature value Yq with the borehole curvature threshold value;

[0082] If the curvature value Yq of the drill hole is greater than the curvature threshold of the drill hole, it means that the drill hole is unqualified and needs to be reprocessed;

[0083] If the curvature value Yq of the drill hole is less than the curvature threshold of the drill hole, it means that the drill hole is qualified.

[0084] The working principle of the present invention is as follows: the acquisition unit uses the base for supporting the angle steel as a plane to construct a rectangular coordinate system, obtains the coordinate values ​​of the center point position of the end faces of the angle steel on both sides, the coordinate value of the center point position of the angle steel, and the angles between the angle steel and the X-axis, Y-axis and Z-axis respectively;

[0085] The analysis unit calculates the data obtained by the acquisition unit to obtain the positioning value of the angle steel, and judges whether the processing position of the angle steel meets the process requirements based on the positioning value;

[0086] The feedback unit receives the angle steel position adjustment signal and the angle steel position qualified signal from the analysis unit. When the angle steel position adjustment signal is obtained, the angle steel position is adjusted until the obtained angle steel positioning value Zd meets the requirements; when the angle steel position qualified signal is obtained, the drilling machine is controlled to work;

[0087] The present invention uses a collection unit, an analysis unit, and a feedback unit to perform position comparison analysis on the angle steel to be processed, thereby ensuring that the angle steel is accurately positioned at the processing position, ensuring the accuracy of the angle steel processing, and improving the quality of the angle steel processing.

[0088] The monitoring unit obtains the drilling position data of the drilling machine and the coordinate data of the hole position on the angle steel, performs comparison analysis, and monitors the drilling machine in real time while drilling, thus avoiding position errors that may lead to unqualified hole positions.

[0089] The drilling rig control unit receives a position offset signal, a position alarm signal, and a stop signal. When a position offset signal is received, the drilling rig can be controlled to continue drilling the angle steel. When a position alarm signal is received, the power of the drilling rig is reduced and the alarm is activated at the same time. When a stop signal is received, the drilling rig is controlled to stop working.

[0090] The detection unit collects hole position images on the drilled angle steel, analyzes the image data, and determines whether the holes drilled in the angle steel meet the process requirements;

[0091] The present invention uses a monitoring unit and a drilling rig control unit to perform real-time monitoring and analysis of the angle steel during drilling, thereby ensuring accuracy during drilling and further improving the quality of angle steel processing. At the same time, a subsequent detection unit is used to further detect the processed angle steel to ensure the quality of the angle steel processing.

[0092] The above is a detailed description of an embodiment of the present invention. However, the content described is only a preferred embodiment of the present invention and should not be considered to limit the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. UHV engineering large-size angle steel automatic processing center, characterized by: include: Loading: Place the angle steel on the loading rack and transport it along the loading conveyor belt to the limit mechanism. Then, clamp both sides of the angle steel and fix it, and then use the laser cutting machine to cut the angle steel into pieces. Hole making: After drilling holes on both sides of the angle steel using a five-axis drilling machine and stamping them, the angle steel is moved to the vicinity of the next hole point, and then the two sides of the angle steel are clamped to complete the hole making work. Check the angle steel for drilling holes. If there are no holes at the corresponding position on the angle steel, continue to complete the hole making work according to the above steps. If there are holes at the corresponding position on the angle steel, move the angle steel to the other end, clamp both sides of the angle steel, and cut the material with laser. Move the angle steel to the unloading rack, flip the rack, and the workpiece enters the finished product area. During the loading process, the angle steel is positioned by a positioning system, which includes: The acquisition unit uses the base supporting the angle steel as a plane to construct a rectangular coordinate system, obtains the coordinate values ​​of the center points of the end faces of the angle steel, the coordinate values ​​of the center point of the angle steel, and the angles between the angle steel and the X-axis, Y-axis, and Z-axis respectively; The analysis unit calculates the data obtained by the acquisition unit to obtain the positioning value of the angle steel, and judges whether the processing position of the angle steel meets the process requirements based on the positioning value; The specific working process of the analysis unit is as follows: Step 1: Mark the coordinates of the center point of the first end face as (X1, Y1, Z1), the coordinates of the center point of the second end face as (X2, Y2, Z2), and the coordinates of the center of the angle steel as (X3, Y3, Z3); Using the formula Calculate the first positioning coefficient value X1 of the angle steel; Step 2: Mark the angle between the angle steel and the X-axis as Jx, the angle between the angle steel and the Y-axis as Jy, and the angle between the angle steel and the Z-axis as Jz. Using the formula The second positioning coefficient value X2 of the angle steel is calculated; Step 3: The first positioning coefficient value X1 and the second positioning coefficient value X2 of the angle steel are obtained by the formula Calculate the angle steel positioning value Zd; Step 4: Compare the obtained angle steel positioning value Zd with the angle steel positioning threshold; If the angle steel positioning value Zd is greater than the angle steel positioning threshold, an angle steel position adjustment signal is generated; if the angle steel positioning value Zd is less than the angle steel positioning threshold, an angle steel position qualified signal is generated.

2. The automatic processing center for large-size angle steel for ultra-high voltage engineering according to claim 1 is characterized in that: The feedback unit receives the angle steel position adjustment signal and the angle steel position qualification signal from the analysis unit. When the angle steel position adjustment signal is obtained, the angle steel position is adjusted until the obtained angle steel positioning value Zd meets the requirements; when the angle steel position qualification signal is obtained, the drilling machine is controlled to work.

3. The automatic processing center for large-size angle steel for ultra-high voltage engineering according to claim 2 is characterized in that: During the hole making process, the angle steel is drilled by a hole making system, which includes: The monitoring unit obtains the drilling position data of the drilling machine and the coordinate data of the hole positions on the angle steel, performs comparison analysis, and monitors the drilling machine in real time while drilling; The drilling rig control unit receives position offset signals, position alarm signals, and shutdown signals. When a position offset signal is received, the drilling rig is controlled to continue drilling the angle steel. When a position alarm signal is received, the power of the drilling rig is reduced and the alarm is activated at the same time. When a shutdown signal is received, the drilling rig is controlled to stop working.

4. The automatic processing center for large-size angle steel for ultra-high voltage engineering according to claim 3 is characterized in that: The specific working process of the monitoring unit is as follows: Step 1: Obtain the first drilling position W1, the second drilling position W2 and the third drilling position W3 of the drilling machine; at the same time, obtain the coordinate values ​​of the hole positions; The first drilling position W1 is represented by a coordinate value along the X-axis, the second drilling position W2 is represented by a coordinate value along the Y-axis, and the third drilling position W3 is represented by a coordinate value along the Z-axis. Calculate the differences between the first drilling position W1, the second drilling position W2 and the third drilling position W3 and the corresponding axis coordinate values ​​of the hole positions, and obtain the first drilling distance difference C1, the second drilling distance difference C2 and the third drilling distance difference C3; Step 2: Obtain the error range of the drilling position. If the first drilling distance difference C1, the second drilling distance difference C2, and the third drilling distance difference C3 are within the linear speed error range, no operation is performed. If the first drilling distance difference C1, the second drilling distance difference C2, and the third drilling distance difference C3 are not within the linear speed error range, proceed to the next step. Step 3: Substitute the first drilling distance difference C1, the second drilling distance difference C2 and the third drilling distance difference C3 into the formula Pc=αln(d1*C1+d2*C2+d3*C3) to calculate the deviation value Pc.

5. The automatic processing center for large-size angle steel for ultra-high voltage engineering according to claim 4 is characterized in that: If Pc≤Y1, a position offset signal is generated; if Y1<Pc≤Y2, a position alarm signal is generated; if Y2<Pc, a stop signal is generated; wherein Y1 and Y2 are both deviation thresholds, and Y1<Y2.

6. The automatic processing center for large-size angle steel for ultra-high voltage engineering according to claim 1 is characterized in that: A detection system is installed on the unloading rack, which includes: The detection unit collects hole position images on the drilled angle steel, analyzes the image data, and determines whether the holes drilled in the angle steel meet the process requirements; The specific working process of the detection unit is as follows: Step 1: Obtain the curvature value of each borehole and mark it as Zw. Calculate the difference between the curvature value Zw and the standard curvature value Zwb to obtain the curvature difference Cq; Set several curvature difference coefficients and mark them as Kc; c = 1, 2, ..., w; and K1 < K2 < ... < Kw; each curvature difference coefficient Kc corresponds to a preset compressive strength difference range, which are (k1, k2], (k2, k3], ..., (kw, kw+1]; and k1 < k2 < ... < kw < kw+1; When Cq∈(kw, kw+1], the curvature difference coefficient corresponding to the preset curvature difference range is Kw; Step 2: Use the formula Yq = Cq * Kw to calculate the curvature value Yq of the drill hole; The borehole tortuosity value Yq is compared with a borehole tortuosity threshold value.

7. The automatic processing center for large-size angle steel for ultra-high voltage engineering according to claim 6 is characterized in that: If the curvature value Yq of the drill hole is greater than the curvature threshold of the drill hole, it means that the drill hole is unqualified and needs to be reprocessed; If the curvature value Yq of the drill hole is less than the curvature threshold of the drill hole, it means that the drill hole is qualified.

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