A method for setting a tool for forming grinding of a turbine disk tenon groove

Abstract

The application discloses a kind of forming grinding processing tool setting methods of turbine disc mortise;The method is as follows: one, the pressure-displacement relationship curve between forming grinding wheel and turbine disc mortise is constructed.Two, clamping turbine disc, and forming grinding wheel is extended into to the turbine disc mortise being processed.Three, the tool setting between mortise and forming grinding wheel is carried out.The application uses force sensor to judge whether forming grinding wheel contacts turbine disc mortise;And the relationship between extrusion pressure and workpiece deformation is obtained based on finite element simulation, so that the retreat amount of force sensor detection result controls forming grinding wheel, reduces the positioning error caused by extrusion deformation.The application uses the mode of first horizontal movement to contact, then vertical movement to contact, and then retreat upwards, so that the position of forming grinding wheel is more close to the state of alignment with mortise;Through repeatedly executing the process, the degree of coincidence between grinding wheel and mortise can be effectively improved, and fast and accurate tool setting is realized.

Description

Technical Field

[0001] This invention belongs to the field of grinding, specifically relating to a tool setting method for forming grinding of turbine disk tenon grooves. Background Technology

[0002] The turbine disk is a crucial hot-end rotating component of an aero-engine, and the tenon is a key part connecting the turbine disk to the blades. This part has a complex structure and requires high manufacturing precision and surface integrity. Traditional broaching is insufficient for machining tenons, therefore, form grinding is employed. Form grinding is a precision machining method used to manufacture parts with complex shapes and high precision requirements. Unlike traditional surface grinding or cylindrical grinding, form grinding uses specially designed profiled grinding wheels to directly form the required complex geometry on the workpiece surface. It can achieve complex curved surface machining and attain high surface accuracy and finish.

[0003] In the grinding of turbine disk tenons, traditional tool setting involves scanning the grinding wheel surface with an instrument to record its shape and dimensions, followed by adjustments and calibration based on the scanned data. However, due to the complexity of the grinding wheel surface and the limitations of instrument precision, efficient and precise tool setting is difficult to achieve. Furthermore, the stability of the turbine disk tenon clamping is insufficient, and traditional cooling methods make it difficult for grinding fluid to reach the tool contact area during tenon grinding, resulting in the surface roughness and profile accuracy of the workpiece failing to meet expectations. Therefore, it is necessary to consider the optimal tool setting position and cooling clamping device for turbine disk tenons to achieve precision grinding. Summary of the Invention

[0004] This invention addresses the problem of low surface accuracy in arc-shaped grinding during actual grinding processes. It proposes a tool setting method for the forming grinding of turbine disk tenon grooves. This method includes: a detection method to assess the fit between the arc surface of the irregularly shaped grinding wheel and the arc surface of the turbine disk tenon groove workpiece; a method based on a triaxial force sensor, continuously adjusting the sensor force data to achieve initial contour matching; a method based on the arc surface morphology of the irregularly shaped grinding wheel to obtain the optimal tool setting contour and the actual contour of the grinding wheel for grinding wheel pose correction, reducing pose inaccuracies caused by protruding abrasive grains; and a method combining the actual contact of abrasive grains and the surface, obtaining the force-displacement curve through ABAQUS simulation for pose correction, reducing pose inaccuracies caused by abrasive grains pressing into the surface during tool setting.

[0005] This invention provides a tool setting method for forming and grinding the tenon groove of a turbine disk, characterized by the following steps: Step 1: Construct the pressure-displacement relationship curve between the turbine disk tenon and groove on the forming grinding wheel.

[0006] Step 2: Clamp the turbine disk and insert the forming grinding wheel into the mortise of the turbine disk to be machined.

[0007] Step 3: Perform tool setting between the tenon and the forming grinding wheel.

[0008] Step 3-1. The forming grinding wheel moves horizontally close to the side wall of the tenon groove, and the pressure on the forming grinding wheel is continuously monitored. When the pressure on the forming grinding wheel reaches the pressure threshold, the forming grinding wheel stops moving, and the pressure value F1 between the forming grinding wheel and the turbine disk tenon groove is recorded.

[0009] Step 3-2. Based on the pressure-displacement relationship curve obtained in Step 1 and the pressure value F1, obtain the actual displacement S1 of the abrasive grains pressing into the surface of the tenon groove; the forming grinding wheel 3 retracts along the horizontal direction by the displacement S1, and records the vertical coordinate Z0 of the forming grinding wheel 3 at this time.

[0010] Step 3-3. The forming grinding wheel moves downward in the vertical direction and the pressure on the forming grinding wheel is continuously monitored; when the pressure on the forming grinding wheel reaches the pressure threshold, the forming grinding wheel stops moving and the pressure value F2 between the forming grinding wheel and the turbine disk tenon is recorded.

[0011] Steps 3-4. Based on the pressure-displacement relationship curve obtained in Step 1 and the pressure value F2, obtain the actual displacement S2 of the abrasive grains pressing into the surface of the tenon groove; the spindle drives the forming grinding wheel to retract the displacement S2 in the vertical direction, and record the vertical coordinate Z1 of the forming grinding wheel 3 at this time.

[0012] Steps 3-5. Determine the target alignment amount based on the vertical coordinates Z0 and Z1. The forming grinding wheel moves upward to the target return amount. .

[0013] Step 3-6. Repeat steps 3-1 to 3-5 until the calculated displacement is obtained. Less than or equal to the surface accuracy threshold.

[0014] Preferably, step one is as follows: construct the geometric models of the tenon and groove block and the single abrasive grain; perform finite element simulation on the obtained tenon and groove block model and abrasive grain model. The abrasive grain model is set as a rigid body; the material properties of the tenon and groove block model are set according to the material of the turbine disk being processed. During the simulation, the abrasive grain model moves towards the tenon and groove block model at a preset speed, and the relationship between the pressure of the forming grinding wheel on the turbine disk tenon and groove and the surface deformation of the turbine disk tenon and groove is solved.

[0015] Preferably, the tenon and groove block model is endowed with the JC constitutive damage model and thermophysical properties. The mesh of the machined surface of the tenon and groove block model is refined at equidistant intervals of 0.025 mm in the depth direction; the mesh of the abrasive model is also refined.

[0016] Preferably, the initial distance between the abrasive model and the tenon block model is set to 0.02 mm.

[0017] Preferably, the pressure threshold is between 5N and 10N.

[0018] Preferably, in steps 3-5, the target positive return amount Obtained through the following process; During the first execution of steps 3-5, the displacement... The expression is as follows: in, It is the angle between the hypotenuse on the mortise and the horizontal plane; It is the angle between the lower bevel of the tenon and the horizontal direction.

[0019] Except for the first execution of steps 3-5, the displacement amount The expression is as follows: Preferably, after step three is performed, the base contour of the forming grinding wheel and the sampling fitting contour at the baseline are compared to obtain the average level offset and average vertical offset of the base contour and the sampling fitting contour; then, the forming grinding wheel is moved according to the obtained average level offset and average vertical offset.

[0020] The process of obtaining the sampling point fitting profile at the baseline of the forming grinding wheel is as follows: A baseline is established on the forming grinding wheel. The width of the baseline is smaller than the abrasive grain size. The coordinates of multiple points on the baseline are detected using a coordinate measuring machine, and the highest point on the forming grinding wheel surface is fitted to form an arc, which is used as the sampling point fitting profile.

[0021] Preferably, the grinding equipment used in this forming grinding tool setting method includes a machine tool bed, a turbine disk mounting assembly, and a grinding assembly. The turbine disk mounting assembly includes a three-dimensional force measuring device and an internal hydraulic clamp. The internal hydraulic clamp is mounted on the three-dimensional force measuring device; the internal hydraulic clamp is used to clamp the turbine disk. The pressure value F1 measured in step 3-1 and the pressure value F2 measured in step 3-3 are both measured by the three-dimensional force measuring device.

[0022] Preferably, the turbine disk mounting assembly further includes a first rotating frame, a first rotary drive mechanism, a second rotating frame, and a second rotary drive mechanism. The first rotating frame and the machine tool bed form a first rotating pair that rotates about a horizontal axis. The second rotating frame and the first rotating frame form a second rotating pair. The rotation axis of the first rotating pair and the rotation axis of the second rotating pair are perpendicular to each other. The first rotating frame is driven to rotate by a motor in the first rotary drive mechanism. The second rotating frame is driven to rotate by a motor in the second rotary drive mechanism. The three-dimensional force measuring device is mounted on the second rotating frame. Preferably, the grinding assembly includes a tool spindle, a tool clamping device, and a forming grinding wheel. The tool spindle is movable and rotatable about its own axis; the tool clamping device is mounted on the bottom of the tool spindle. The forming grinding wheel is clamped and fixed to the bottom of the tool clamping device. The longitudinal section profile of the forming grinding wheel matches the tenon and groove profile of the turbine disk.

[0023] Preferably, the grinding equipment further includes a lighting assembly. The lighting device is mounted on the first rotating frame and is used to illuminate the area being ground.

[0024] The beneficial effects of this invention are: This invention uses a force sensor to determine whether the forming grinding wheel contacts the mortise and tenon groove of the turbine disk; and obtains the relationship between the extrusion force and the workpiece deformation based on finite element simulation. The detection results of the force sensor control the retraction amount of the forming grinding wheel, reduce the positioning error caused by extrusion deformation, improve the tool setting accuracy between the grinding wheel and the mortise and tenon workpiece, and help improve the final surface quality.

[0025] This invention utilizes a method of first moving horizontally to contact, then vertically to contact, and then retracting upwards to make the position of the forming grinding wheel closer to the alignment with the mortise and tenon. By repeating this process, the degree of direct fit between the grinding wheel and the mortise and tenon can be effectively improved, achieving fast and accurate tool setting.

[0026] This invention compares the fitted profile of the abrasive grains on the grinding wheel with the profile of the grinding wheel matrix, further corrects the position of the grinding wheel, thereby reducing the grinding wheel tool setting deviation caused by some protruding abrasive grains, further improving tool setting accuracy, and improving the final surface accuracy of the tenon groove. Attached Figure Description

[0027] Figure 1 This is a three-dimensional schematic diagram of the grinding equipment used in this invention; Figure 2 This is a top view of the turbine disk mounting assembly in the grinding equipment used in this invention; Figure 3 This is a simulation diagram from step one of the present invention; Figure 4 This is a pressure-displacement relationship curve obtained in step one of the present invention; Figure 5 This is a schematic diagram of step three of the present invention; Figure 6 This is a schematic diagram showing the angles between the upper and lower inclined sides of the tenon groove and the horizontal plane in step three of this invention. Figure 7 This is a partial schematic diagram showing the relative position between the substrate contour and the sampling point fitting contour in step four of the present invention.

[0028] Reference numerals: 1-Tool spindle, 2-Tool clamping device, 3-Forming grinding wheel, 4-Turbine disk, 5-Internal hydraulic clamp, 6-Three-axis force measuring device, 7-Second rotating frame, 8-First rotating frame, 9-Machine bed. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings.

[0030] like Figure 1 and Figure 2 As shown, a method for tool setting in the forming grinding of a turbine disk tenon groove is disclosed. The grinding equipment used includes a machine bed 9, a turbine disk mounting assembly, a grinding assembly, and a lighting assembly. The turbine disk mounting assembly includes a first rotating frame 8, a first rotary drive mechanism (not shown), a second rotating frame 7, a second rotary drive mechanism (not shown), a three-dimensional force measuring device 6, and an internal hydraulic clamp 5. The first rotating frame 8 and the machine bed 9 form a first rotating pair that rotates about a horizontal axis. The second rotating frame 7 and the first rotating frame 8 form a second rotating pair. The rotation axis of the first rotating pair is perpendicular to the rotation axis of the second rotating pair. The first rotating frame 8 is driven to rotate by a motor in the first rotary drive mechanism. The second rotating frame 7 is driven to rotate by a motor in the second rotary drive mechanism.

[0031] The internal hydraulic clamp 5 is mounted on the second rotating frame 7 via a three-way force measuring device 6; the internal hydraulic clamp 5 is used to clamp the turbine disk 4.

[0032] The grinding assembly includes a tool spindle 1, a tool clamping device 2, and a forming grinding wheel 3. The tool spindle 1 is capable of rotating around its own axis and translating with three degrees of freedom under the drive of a power element. The tool clamping device 2 is mounted on the bottom end of the tool spindle 1. The forming grinding wheel 3 is clamped and fixed at the bottom of the tool clamping device 2. The longitudinal section profile of the forming grinding wheel 3 matches the tenon and groove profile of the turbine disk 4.

[0033] A lighting device is mounted on the first rotating frame 8 to illuminate the area being ground. The lighting device includes a lamp and an adjustable magnet.

[0034] The tool setting method for the forming grinding of the turbine disk tenon groove includes the following steps: Step 1: Simulate the interaction between the abrasive grains of the forming grinding wheel 3 and the workpiece to obtain the pressure-displacement (i.e., deformation) relationship curve between the abrasive grains and the turbine disk tenon groove. The simulation process is as follows: like Figure 3 As shown, geometric models of the tenon and groove block and a single abrasive grain are constructed; the curved surface on the tenon and groove block model matches the shape of the turbine disk tenon and groove. The tenon and groove block model and the single abrasive grain model are imported into ABAQUS software; material properties are assigned to the abrasive grain and turbine disk, respectively; the abrasive grain model is set as a rigid body, requiring only basic material parameters; the tenon and groove block model is assigned the JC constitutive damage model and thermophysical properties. The area of ​​the machined surface of the tenon and groove block model with equidistant 0.025mm depth direction is meshed; the abrasive grain model is also meshed.

[0035] During assembly, the distance between the abrasive model and the tenon block model is 0.02mm, based on the actual contact area. A temperature-displacement coupling analysis step is set, with a mass scaling of 200 and a time setting of 0.5s. A point is set on the abrasive surface as the rigid body coupling point of the abrasive model, and the abrasive is coupled to this point.

[0036] Establish general contact by setting contact between the abrasive model and the tenon / groove block model, contact between the abrasive model surface and all surfaces of the tenon / groove block model mesh, and self-contact between the tenon / groove block model mesh surfaces. Completely fix the side of the tenon / groove block model away from the machined surface, and set the movement speed of the rigid coupling point of the abrasive model towards the workpiece to 6 mm / min. Submit the solution analysis of this model to obtain the pressure-displacement relationship curve between the abrasive and the turbine disk tenon / groove. If the result does not converge, the abrasive model can be simplified or re-meshed. The obtained pressure-displacement relationship curve is shown below. Figure 4 As shown, Step Two, as follows Figure 5 As shown, the turbine disk, which has been processed by wire cutting to form the basic shape of the tenon groove, is clamped on the inner bore hydraulic clamp 5. The specific process is as follows: 2-1. Perform preliminary adjustments to the first rotating frame 8 and the second rotating frame 7 for clamping the turbine disk. Place the turbine disk tenon into the fixture and clamp it. Then, adjust and zero the data in the three-dimensional force measuring device 6. Use an external force sensor to push the turbine disk and observe whether the data from the external force sensor and the three-dimensional force measuring device 6 are consistent. If they are consistent, proceed to the next step; otherwise, adjust until they are consistent. Adjust the position of the first rotating frame 8. Select a plane on the turbine disk and use a suitable metal adhesive to attach a metal block to the plane. Move the grinding wheel to the side of the metal block, and use the force sensor to determine that the distance is almost zero. Move the wheel up and down on the plane to determine the position of the first rotating frame 8. Adjust the position of the second rotating frame 7 by aligning the central axis of the grinding wheel's rotation with the central axis of the tenon. The metal block has two opposing sides with a parallelism less than a threshold.

[0037] 2-2. Illuminate the mortise and tenon groove being machined on the turbine disk 4 using a lighting device; illuminate the tool setting area of ​​the forming grinding wheel 3 with a laser line light source to create a laser marking line; rotate the forming grinding wheel 3 so that the reference line on the forming grinding wheel 3 coincides with the laser marking line. By adjusting the movement speed of the spindle 1, move the forming grinding wheel to the mortise and tenon groove being machined on the turbine disk 4, first quickly and then slowly, making the contours of the two as close as possible while leaving a gap.

[0038] Step 3: Perform precision tool setting between the tenon and the grinding wheel.

[0039] 3-1. Move the spindle at its slowest possible speed in the horizontal direction of the mortise (specifically...) Figure 2 Move in the Y direction (as shown in the image), such as Figure 2 As shown, the changes in the value of the three-dimensional force measuring device 6 are observed during movement. When the pressure measured by the three-dimensional force measuring device 6 reaches the pressure threshold, the forming grinding wheel 3 stops moving in the horizontal direction. When the pressure value measured by the three-dimensional force measuring device 6 stabilizes, the resultant force F1 measured by the three-dimensional force measuring device 6 at this time is recorded. The pressure threshold ranges from 5N to 10N. The resultant force F1 measured by the three-dimensional force measuring device 6 is the change in resultant force at the current moment relative to the initial moment, which is used to eliminate the gravitational influence of the turbine disk 4 and the internal hydraulic clamp 5.

[0040] 3-2. Based on the pressure-displacement relationship curve obtained in step one and the resultant force F1 measured by the three-dimensional force measuring device 6, the actual displacement S1 of the abrasive grains of the current forming grinding wheel 3 pressing into the tenon groove surface is obtained; the spindle drives the forming grinding wheel 3 to retract the displacement S1 in the horizontal direction, and the coordinates (X0, Y0, Z0) of the forming grinding wheel 3 at this time are recorded. 3-3. Move the grinding wheel vertically downward at the slowest speed of the spindle. Observe the change in the value of the three-dimensional force measuring device 6 during the movement. When the pressure measured by the three-dimensional force measuring device 6 reaches the pressure threshold, the forming grinding wheel 3 stops moving vertically. When the pressure value measured by the three-dimensional force measuring device 6 stabilizes, record the resultant force F2 measured by the three-dimensional force measuring device 6 at this time. 3-4. Based on the pressure-displacement relationship curve obtained in step one and the resultant force F2 measured by the three-dimensional force measuring device 6, the actual displacement S2 of the abrasive grains of the current forming grinding wheel 3 pressing into the tenon groove surface is obtained; the spindle drives the forming grinding wheel 3 to retract the displacement S2 in the vertical direction, and the coordinates (X1, Y1, Z1) of the forming grinding wheel 3 at this time are recorded. 3-5. Calculate the upward displacement required for the forming grinding wheel 3. ; and drive the forming grinding wheel 3 to move upward by a certain amount of displacement. .

[0041] During the first execution of steps 3-5, the displacement... The expression is as follows: like Figure 6 As shown, It is the angle between the hypotenuse on the mortise and the horizontal plane; It is the angle between the lower bevel of the tenon and the horizontal direction.

[0042] During the second and subsequent executions of steps 3-5, the displacement... The expression is as follows: 3-6. Repeat steps 3-1 to 3-5 until the calculated displacement is obtained. Tool setting is completed when the surface accuracy threshold is less than or equal to the required accuracy. In this embodiment, the surface accuracy threshold is set to 0.002 mm.

[0043] Step 4: Correct the contour error of the forming grinding wheel 3.

[0044] like Figure 7 As shown, the base contour of the forming grinding wheel 3 is compared with the sampling fitted contour at the baseline to obtain the average horizontal offset and average vertical offset between the base contour and the sampling fitted contour. Then, the forming grinding wheel 3 is moved according to the obtained average horizontal offset and average vertical offset to complete the final tool setting between the turbine disk tenon and the grinding wheel. The base contour of the forming grinding wheel 3 is the design contour of the forming grinding wheel 3, which matches the contour of the turbine disk tenon.

[0045] The process of obtaining the sampling point fitting profile at the baseline of the forming grinding wheel 3 is as follows: A baseline is defined on the forming grinding wheel 3. The width of the baseline is smaller than the abrasive grain diameter; in this embodiment, it is 0.02 mm. The coordinates of multiple points on the baseline are detected using a coordinate measuring machine, and the highest point on the surface of the forming grinding wheel 3 is fitted to form an arc, which is used as the sampling fitting profile. Because some abrasive grains on the forming grinding wheel 3 are relatively prominent, there is a tendency for the sampling fitting profile to deviate from the actual base profile of the forming grinding wheel 3, therefore, correction is required.

[0046] Step 5: After tool setting, proceed with machining the mortise and tenon joints of the turbine disc. Machining a single mortise and tenon joint consists of three parts: the left and right sides of the joint and the bottom arc portion. First, machine the bottom arc portion of the joint, using the tool setting method as described above. After machining one bottom arc portion, rotate the turbine disc by an angle according to the number of joints. When machining the left and right sides of the joint, after machining the left side, do not rotate the turbine disc; move it 2mm to machine the right side. After machining the left and right sides, rotate the turbine disc to machine the next joint until all mortises are machined.

Claims

1. A method for tool setting in the forming grinding process of a turbine disk tenon groove, characterized in that: Includes the following steps: Step 1: Construct the pressure-displacement relationship curve between the abrasive grains on the shaped grinding wheel and the tenon groove of the turbine disk; Step 2: Clamp the turbine disk and insert the forming grinding wheel into the mortise of the turbine disk to be machined; Step 3: Perform tool setting between the tenon and the forming grinding wheel; Step 3-1. The forming grinding wheel moves horizontally close to the side wall of the tenon groove, and the pressure on the forming grinding wheel is continuously monitored; when the pressure on the forming grinding wheel reaches the pressure threshold, the forming grinding wheel stops moving, and the pressure value F1 between the forming grinding wheel and the turbine disk tenon groove is recorded; Step 3-2. Based on the pressure-displacement relationship curve obtained in Step 1 and the pressure value F1, obtain the actual displacement S1 of the abrasive grains pressing into the surface of the tenon groove; the forming grinding wheel retracts along the horizontal direction by the displacement S1, and record the vertical coordinate Z0 of the forming grinding wheel at this time. Step 3-3. The forming grinding wheel moves downward in the vertical direction, and the pressure on the forming grinding wheel is continuously monitored; when the pressure on the forming grinding wheel reaches the pressure threshold, the forming grinding wheel stops moving, and the pressure value F2 between the forming grinding wheel and the turbine disk tenon is recorded; Steps 3-4. Based on the pressure-displacement relationship curve obtained in Step 1 and the pressure value F2, obtain the actual displacement S2 of the abrasive grains pressing into the surface of the tenon groove; the spindle drives the forming grinding wheel to retract the displacement S2 in the vertical direction, and record the vertical coordinate Z1 of the forming grinding wheel at this time. Steps 3-5. Determine the target alignment amount based on the vertical coordinates Z0 and Z1. ; The target return amount of the forming grinding wheel moving upward. ; Step 3-6. Repeat steps 3-1 to 3-5 until the calculated target homing amount is obtained. Less than or equal to the surface accuracy threshold.

2. The method for tool setting in the forming grinding process of a turbine disk tenon groove according to claim 1, characterized in that: The process of step one is as follows: construct the geometric models of the tenon and groove block and the single abrasive grain; perform finite element simulation on the obtained tenon and groove block model and abrasive grain model; set the abrasive grain model as a rigid body; set the material properties of the tenon and groove block model according to the material of the turbine disk being processed; during the simulation, the abrasive grain model moves towards the tenon and groove block model at a preset speed, and solves the relationship between the pressure of the forming grinding wheel on the turbine disk tenon and groove and the deformation of the turbine disk tenon and groove surface.

3. The method for tool setting in the forming grinding process of a turbine disk tenon groove according to claim 2, characterized in that: The mortise and tenon block model is given a JC constitutive damage model and thermophysical properties; the area of ​​the machined surface of the mortise and tenon block model with a depth direction of equidistant 0.025mm is meshed; the abrasive model is meshed.

4. The method for tool setting in the forming grinding process of a turbine disk tenon groove according to claim 1, characterized in that: The pressure threshold value is between 5N and 10N.

5. The method for tool setting in the forming grinding process of a turbine disk tenon groove according to claim 1, characterized in that: In steps 3-5, the target return to positive value. Obtained through the following process; During the first execution of steps 3-5, the target homing amount... The expression is as follows: ； in, The angle between the hypotenuse and the horizontal plane; It is the angle between the lower inclined side of the tenon and the horizontal direction; Except for the first execution of steps 3-5, the target return amount The expression is as follows: 。 6. The method for tool setting in the forming grinding process of a turbine disk tenon groove according to claim 1, characterized in that: After step three is executed, the base contour of the forming grinding wheel and the sampling point fitting contour at the baseline are compared to obtain the average level offset and average vertical offset of the base contour and the sampling point fitting contour; then, the forming grinding wheel is moved according to the obtained average level offset and average vertical offset. The process of obtaining the sampling point fitting profile at the baseline of the forming grinding wheel is as follows: A baseline is defined on the forming grinding wheel; the width of the baseline is smaller than the abrasive grain size; the coordinates of multiple points on the baseline are detected by a coordinate measuring machine, and the highest point on the surface of the forming grinding wheel is fitted to form an arc, which is used as the sampling point fitting profile.

7. The method for tool setting in the forming grinding process of a turbine disk tenon groove according to claim 1, characterized in that: The grinding equipment used includes a machine bed (9), a turbine disk mounting assembly, and a grinding assembly; the turbine disk mounting assembly includes a three-dimensional force measuring device (6) and an internal hydraulic clamp (5); the internal hydraulic clamp (5) is mounted on the three-dimensional force measuring device (6); the internal hydraulic clamp (5) is used to clamp the turbine disk (4); the pressure value F1 measured in step 3-1 and the pressure value F2 measured in step 3-3 are both measured by the three-dimensional force measuring device (6).

8. The method for tool setting in the forming grinding process of a turbine disk tenon groove according to claim 7, characterized in that: The turbine disk mounting assembly further includes a first rotating frame (8), a first rotary drive mechanism, a second rotating frame (7), and a second rotary drive mechanism; the first rotating frame (8) and the machine tool bed (9) form a first rotating pair that rotates around a horizontal axis; the second rotating frame (7) and the first rotating frame (8) form a second rotating pair; the rotation axis of the first rotating pair and the rotation axis of the second rotating pair are perpendicular to each other; the first rotating frame (8) is driven to rotate by a motor in the first rotary drive mechanism; the second rotating frame (7) is driven to rotate by a motor in the second rotary drive mechanism; the three-dimensional force measuring device (6) is mounted on the second rotating frame (7).

9. The method for tool setting in the forming grinding of a turbine disk tenon groove according to claim 7, characterized in that: The grinding assembly includes a tool spindle (1), a tool clamping device (2), and a forming grinding wheel (3). The tool spindle (1) is movable and can rotate around its own axis. The tool clamping device (2) is installed at the bottom of the tool spindle (1). The forming grinding wheel (3) is clamped and fixed at the bottom of the tool clamping device (2). The longitudinal section profile of the forming grinding wheel (3) matches the tenon and groove profile of the turbine disk (4).

10. The method for tool setting in the forming grinding process of a turbine disk tenon groove according to claim 7, characterized in that: The grinding equipment also includes a lighting component; the lighting component is mounted on the first rotating frame (8) and is used to illuminate the area being ground.

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