JP2010184302A - Working method for curved surface shape component - Google Patents

Working method for curved surface shape component Download PDF

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Publication number
JP2010184302A
JP2010184302A JP2009028683A JP2009028683A JP2010184302A JP 2010184302 A JP2010184302 A JP 2010184302A JP 2009028683 A JP2009028683 A JP 2009028683A JP 2009028683 A JP2009028683 A JP 2009028683A JP 2010184302 A JP2010184302 A JP 2010184302A
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Japan
Prior art keywords
machining
curved
processing
point
tool
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JP2009028683A
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Japanese (ja)
Inventor
Kenjiro Katayama
Kunihiko Kinugasa
Takeshi Komotori
Hirotoshi Matsumura
Yoshiaki Ono
岳 小茂鳥
芳明 小野
博俊 松村
健二郎 片山
邦彦 衣笠
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Toshiba Corp
株式会社東芝
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Priority to JP2009028683A priority Critical patent/JP2010184302A/en
Publication of JP2010184302A publication Critical patent/JP2010184302A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To efficiently machine a component having a curved shape such as a curved impeller made of metal at high accuracy. <P>SOLUTION: In the method, the component is positioned and worked at machining of the component (work) 1 having the curved impeller shape. Working of the deepest working target point is previously applied between mutually adjacent scallops of the component 1, a point where a curvature of the component is largest is previously calculated based on a line obtained by connecting mutual working coordinate points of mutually adjacent tool tracks generated by application, a working point for positioning an end mill as a working tool is set to the deepest point, and the end mill is positioned at a position of the working point and working is performed. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a method for machining a curved part capable of machining a part having a curved shape such as a metal curved blade with high accuracy and efficiency.

  For machining of curved parts such as metal curved blades, especially metal parts of several hundred kg, a machining center with 5 or more simultaneous control axes of the tool is applied, and a ball end mill with a diameter of about 20mm to 30mm It is common to perform NC machining using the like.

  In addition, in order to obtain a smooth curved surface with high accuracy, it is necessary to make the machining pitch of the tool fine, and much machining time is required only by machining. For this reason, a method of leaving a scallop (a step slightly remaining between the processing pitches of the small-diameter ball end mill tool) and combining these with a method such as hand finishing by grinder processing is employed.

  When machining a curved surface having a relatively large curvature, it is easy to remove the residual scallop by NC machining by grinder machining and finish it smoothly. Since the scallop removal can be performed so as to smoothly connect the machining trajectories (the deepest machining eyes) machined at the extreme end of the ball end mill, the target position of the grinder depth and the uniform removal of adjacent scallops Is easy to distinguish visually.

  When machining a part having a geometric shape in which a large number of curved curved surfaces such as screws are machined by the above-described method of integrally machining, the vicinity of the center of the blade has a relatively large curvature. Thus, a smooth curved surface with high accuracy can be machined relatively easily by combining NC machining and grinder machining.

  However, a concave corner R surface having a small curvature of about R5 mm is formed at the connecting portion such as the central boss and the blade surface, and it is difficult to process with a ball end mill of about φ20 mm, for example. .

  In the case of machining having a radius smaller than the corner R, for example, if a ball end mill having a diameter of about 5 mm is used, machining becomes easy, but in that case, it is necessary to make the machining pitch fine, and the tool feed The speed also needs to be slowed, which increases machining time.

  On the other hand, if there is a curved surface at the front edge or rear end of the blade, and a small-diameter convex surface of about R2 mm at the front edge or rear end (edge) of the blade, this portion is also a curved surface even with a ball end mill of about φ20 mm. Therefore, processing is possible, but the remaining shape of the scallop becomes an extremely sharp knife edge, and when it is removed by grinder processing, it is difficult to finish it into a uniform curved surface. Even in this case, if a ball end mill having a small diameter is used, the height of the scallop can be reduced, but the processing time becomes extremely long as described above.

  In addition, it is often difficult to define a curved surface by a function on a small-diameter corner R surface that connects curved surfaces, and a tool machining path is set by defining a set of point coordinates for gently connecting surfaces. Although a technique is taken, it is necessary to make the geometric calculation pitch fine. In this case, in order to change the tool or change the trajectory, it is necessary to redefine the surface each time and convert it to a point cloud, and complicated processing must be repeated.

  In order to stabilize the variation in performance when manufacturing a plurality of blades such as screws, it is necessary to process the above-mentioned blade end portion (edge portion) and surface joint portion with stable accuracy and high reproducibility. It is generally known to be important. Therefore, how the finishing process such as the subsequent grinder processing can be facilitated with the curved surface shape of each part immediately after the completion of machining, with the scallop remaining, improves the efficiency in production and the performance (quality). It becomes an important viewpoint for the realization of stability.

  In addition, it is known that skilled skills are necessary to accurately grind the curved surface. The reason for this is that when performing a smooth finish with a grinder in a scalloped state, the state of the machined eye is visually observed, and what part is cut and how much, with minimal machining, surfaces with different curvatures It is because it is necessary to assume whether it can connect smoothly. If a part is cut too much, it will be necessary to finish the vicinity of the curved surface in a wide range in order to form a joint between curved surfaces, leading to an increase in work time and the inability to maintain the reproducibility of the shape. appear. In particular, when the curvature is small and the scallop is rough, the skill greatly affects the shape shaping accuracy.

JP-A-7-299828

  The present invention has been made in view of the above circumstances, and can efficiently perform NC machining of parts having a curved blade shape such as a screw, and can improve a finishing method such as grinder processing, By appropriately combining these methods, high accuracy and a rational processing method are provided.

  Further, it is possible to provide a machining method capable of machining a surface having a large or small curvature with high accuracy in a short time even if not skilled, and improving the functionality of the processing machine. For this purpose, it is possible to improve and utilize the function of a surface measurement sensor used in a machine tool, and to realize a simple machining method for easily forming a grinder-finished scallop removal target shape on a workpiece.

  In addition, the curved surface shape of a product with good performance with little variation in the number of revolutions is measured in advance, and this can be efficiently transferred and reflected in the machined shape and grinder molding work of the product to be newly processed, that is, the surplus removal A simple method is provided.

  In order to achieve the above object, the present invention is a method for positioning and machining a part during machining of a part having a curved blade shape, and the deepest machining target point in advance between adjacent scallops of the part. The point where the curvature of the part is the largest is calculated in advance based on the line connecting the processing coordinate points of the adjacent tool trajectories generated by this cutting work, and the end mill is set at the deepest point of this point. A processing method for curved surface parts is provided, in which a processing point for positioning is set, and an end mill is positioned and processed at the position of the processing point.

  According to the present invention, in NC machining of a part having a curved blade shape such as a screw, a corner R surface having a relatively small curvature can be formed into a shape that can be easily grindered, and a scallop remaining state can be obtained. . Further, the grinder processing can be easily performed by a non-skilled person without significantly increasing the machining time, and a curved surface with high accuracy and high repeatability can be processed.

The perspective view which shows the whole structure of the workpiece processed by the method of 1st Embodiment of this invention. The perspective view which expands and shows the blade | wing part of the workpiece shown in FIG. The perspective view which expands and shows the blade | wing surface shown in FIG. The enlarged view which shows the tool locus | trajectory of the blade | wing shown in FIG. The enlarged view which shows the workpiece processed by the method of 2nd Embodiment of this invention. The enlarged view which shows the workpiece processed by the method of 3rd Embodiment of this invention. The enlarged view which shows the workpiece processed by the method of 4th Embodiment of this invention. The enlarged view which shows the workpiece processed by the method of 5th Embodiment of this invention. The enlarged view which shows the workpiece processed by the method of 6th Embodiment of this invention. The general view which shows the workpiece processed by the method of 7th Embodiment of this invention. The enlarged view which shows the workpiece processed by the method of 7th Embodiment of this invention, and a processing apparatus. Explanatory drawing which shows the workpiece processed by the method of 8th Embodiment of this invention, and a processing apparatus.

  Hereinafter, an embodiment of a method for processing a curved surface shaped part according to the present invention will be described with reference to the drawings.

First Embodiment (FIGS. 1 to 4)
This embodiment demonstrates the example of the processing method of the concave-surface part with a curvature. This example is a machining method that easily finishes a blade surface end portion, a corner R surface, and the like having a relatively small curvature by a grinder machining in a subsequent process in NC machining of a part having a curved blade shape such as a screw.

  FIG. 1 is a perspective view showing an overall configuration of a workpiece having screw-shaped blades processed by the method of the present embodiment.

  As shown in FIG. 1, the workpiece 1 has a configuration in which a screw blade 3 is integrally provided in a cylinder 2. Specifically, a plurality of screw blades 3 project integrally from the inner peripheral surface of the cylinder 2 toward the center, and these screw blades 3 are integrally connected to a boss 4 provided at the center position of the cylinder 2. ing. The workpiece 1 is obtained by excavating a solid metal block-shaped material by machining and then polishing and finishing the remaining portion by grinder processing.

  The wide central portion of the screw blade 3 has a flat shape, but the connecting portion 3a between the screw blade 3 and the cylinder 2 and the connecting portion 3b between the screw blade 3 and the boss 4 have a concave shape with a small curvature. The corner R surface 5 is formed. That is, a concave corner R surface 5 having a small curvature of about R5 mm is formed at the connecting portion between the central boss 5 and the blade surface of the screw blade 3. When the corner R surface 5 is a concave R surface having a small curvature of about R5 mm, it is difficult to process with a ball end mill of about φ20 mm.

  On the other hand, in the present embodiment, a machining target point is given to the concave corner R surface 5 using the touch sensor 6 and the machining tool 7 shown in FIG. By using a combination of NC machining and grinder machining on the basis of a point, a smooth curved surface with high accuracy can be machined relatively easily.

  FIG. 2 is an enlarged view showing the screw blade 3 and the processing tool 7 which are blade portions of the workpiece 1 shown in FIG. 1, and shows a state immediately after machining.

  As shown in FIG. 2, a portion where the blade surface of the screw blade 3 and the outer peripheral surface (boss surface) of the boss 4 intersect has a corner R shape with a small diameter due to the corner R surface 5, and the curvature thereof. Is also small. Then, on the blade surface 5a and the boss surface 4a of the workpiece 1, a scallop 8 consisting of a slight step remaining between the machining pitches of the small-diameter ball end mill tool as the machining tool 7 remains on the surface in a wave pattern along the tool trajectory. is doing. The scallop 8 has a knife edge shape with a sharp tip. In the present embodiment, this edge portion is removed by grinding with the processing tool 7 and finished into a uniform curved surface.

  This finishing process will be specifically described with reference to FIGS.

  FIG. 3 is an enlarged perspective view showing the corner R surface 5. As shown in FIG. 3, in the present embodiment, the deepest machining target point 9 (9a, 9b) having a circular hole shape is cut between adjacent scallops 8 (8a, 8b). In this way, if the deepest machining target point 9 (9a, 9b) is cut between the adjacent scallops 8a, 8b, the target point for manual finish grinder machining can be easily determined visually. And it will be in the shape and scallop remaining state which is easy to perform grinder processing after machining.

  FIG. 4 is an enlarged view for explaining the above method in detail. As shown in FIG. 4, a line connecting machining coordinate points of adjacent tool tracks 10 is defined. In this case, taking any three points, the point 11 having the largest curvature is calculated in advance using the internal calculation function of the NC machine. And the deepest point which is said process target point 9a, 9b is set as a process point which positions the ball end mill as the process tool 7. FIG.

  By accurately positioning the ball end mill, which is the processing tool 7, at the position of the deepest point, which is the processing target points 9a, 9b, and performing cutting, it is easy to visually determine the deepest point of the corner R shape. be able to.

  The machining target points 9a and 9b do not need to be machined in succession, and need only be machined several times. Therefore, it is not necessary to increase the machining time or further process with a small-diameter end mill. . Further, the accuracy of grinder processing can be improved without increasing the processing time.

  Thus, in this embodiment, the processing of the deepest processing target points 9a and 9b is performed in advance between the adjacent scallops 8 of the parts, and the processing coordinate points of the adjacent tool trajectories generated by this processing are connected. Three arbitrary points are extracted based on the lines l2a and 12b, and the point with the largest curvature of the part is calculated in advance using the internal calculation function of the processing machine. A processing point for positioning the end mill 7 is set, and the ball end mill 7 is positioned and processed at the position of the processing point.

  According to this embodiment, in NC machining of a part having a curved blade shape such as a screw, the corner R surface having a relatively small curvature can be formed into a shape that can be easily grindered to be in a scallop remaining state. it can. Further, the grinder processing can be easily performed by a non-skilled person without significantly increasing the machining time, and a curved surface with high accuracy and high repeatability can be processed.

[Second Embodiment] (FIG. 5)
Unlike the first embodiment, the processing method according to the second embodiment of the present invention calculates in advance a portion where the amount of scallop exceeds a certain value (for example, 0.5 mm), and the portions are adjacent to each other. This is a method in which all the small-diameter ball end mill processing is performed on the deepest point using the coordinate values of the processing points (three points).

  As this method, a small-diameter end mill (not shown) is applied to the curved surface R corner machining, and the cutting markings 13 are automatically applied by a machine tool at a necessary minimum unequal pitch as target points for subsequent grinder machining.

  FIG. 5 shows an example in which all the target points of the grinder processing depth are processed at a part having a scallop height h of a certain level or more. In addition, the area | region shown with the virtual line E in FIG. 5 prescribes | regulates the range which performs the process of this embodiment.

  As shown in FIG. 5, a portion where the amount of scallop 8 exceeds a certain value is calculated in advance, and the small-diameter ball end mill processing to the deepest point is performed on the portion based on the coordinate values of three adjacent processing points. Is to be applied.

  As a result, it is possible for a non-skilled person to easily perform a grinder processing with curved surfaces, and to suppress an increase in machining time.

  According to this embodiment, by providing a processing method for automatically marking a processing target point with a necessary minimum unequal pitch, grinder processing for connecting curved surfaces can be easily performed even by a non-expert. A curved surface finish with high repeatability can be realized while suppressing an increase in machining time.

[Third Embodiment] (FIG. 6)
The machining method of this embodiment is a workaround when the machining accuracy of the surface varies due to problems such as the rigidity of the machining tool and the usage time, and the small diameter of the surface measurement sensor used on the machine tool. A control method is applied to increase the measurement accuracy of the corner R section.

  FIG. 6 is an explanatory diagram for carrying out the method of the present embodiment. The phantom line area F shown in FIG. 6 indicates an area where the machining accuracy based on the past results is likely to vary. Marking is performed on a point specified by the NC program on the curved surface inside the region F, and measurement is performed with a touch sensor of the machine tool.

  In other words, the part that is likely to vary in processing is grasped in advance based on the past processing results, the region including the part is defined in the three-dimensional coordinates, and the point specified in the region is automatically measured, The correction amount of the tool is controlled by calculating the target machining amount and the actual difference.

  As a result, even if the machining surface accuracy varies in NC machining due to problems such as the rigidity of the machining tool and the usage time, the NC machine tool automatically determines in advance the site where the variation is likely to occur, and measures the site. The correction amount can be controlled by itself, and a highly reproducible curved surface with high repeatability can be processed.

  Specifically, a region (region F) where variations are likely to occur is previously grasped from past machining results, and the region is defined in three-dimensional coordinates. The NC machine tool automatically measures the points specified in the area, calculates the difference h1 between the target machining amount G1 indicated by the broken line and the actual machining amount G2, and sets the correction amount of the tool itself. .

  As a result, the difference from the ideal machining point can be calculated, so that a highly accurate and highly reproducible curved surface is generated by repeated processing such as automatically changing the tool position correction by NC program processing and machining this point again. be able to.

[Fourth Embodiment] (FIG. 7)
In the machining method of this embodiment, the corner R shape of the connecting portion between which it is difficult to define the curved surface in advance is processed by geometric calculation processing inside the NC machine tool without any prior three-dimensional analysis processing or the like. Is the method.

  That is, the tool path data processed in advance by three-dimensional CAD or the like is a series of point cloud data. However, when the machining order needs to be changed or the tool trajectory is improved, Processing with machine tools must be stopped, and the CAD processing of curved surface data must be restarted from the beginning.

  In order to avoid this, in this embodiment, a best-fit curve connecting four consecutive machining points (I, B, C, and D) of adjacent tool buses is set, and this best-fit curve is calculated in the machine tool. The deepest point P is created by calculation according to the function, and the processing marking 14 is applied to the deepest point P with a tool.

  Specifically, as shown in FIG. 7, the best fit curve L of four consecutive machining points of adjacent tool buses is calculated by the calculation function in the machine tool, and the deepest point is detected. The process which gives the process marking 14 with a tool is added. With this process, it is possible to realize a machined surface with high repeatability and to perform additional machining freely at the site where the machine tool is located without returning to CAD, etc., thereby reducing the load of 3D geometric calculation. In addition, since a prior curved surface definition is not required and further processing with a narrowed point is performed at the minimum, an increase in processing time can be prevented.

  In addition, it is possible to quickly define the connecting portion corner R shape between surfaces that are difficult to define a curved surface inside the NC machine tool without increasing the load of prior three-dimensional analysis processing.

  Furthermore, the corner R shape of the joints between the surfaces where it is difficult to define curved surfaces is geometrically calculated inside the NC machine tool without any prior three-dimensional analysis processing, etc., to realize a machining surface with high repeatability. be able to. Thereby, the load of the three-dimensional geometric calculation can be reduced, and the prior curved surface definition can be made unnecessary.

[Fifth Embodiment] (FIG. 8)
The processing method of this embodiment is a function that makes the height of adjacent scallops constant on a wide surface so that the operator can easily assume the final finished curved surface shape of the grinder processing from the remaining scallop state by the tool during machining. It is about the NC program control method which has.

  That is, the small-diameter corner R portion is automatically measured by the surface measurement sensor used on the machine tool, and in this case, the sensor probe is automatically positioned from the normal direction of the surface having the curvature and measured. The present invention is applied as an NC machine tool having a control function for accessing a sensor from a direction perpendicular to a target surface.

  FIG. 8 is an explanatory diagram specifically showing the method of the present embodiment. As shown in FIG. 8, the touch sensor 15 is moved in the three-dimensional direction (X, Y, Z) without being along the tool axis, and accessed from the normal direction of the surface (curved surface) 16 having the curvature of the workpiece 1. In this example, the surface position of the workpiece 1 is measured.

  A touch sensor probe for measuring a machining surface position of a normal NC machine tool is operated in a tool axis direction and a direction perpendicular thereto to automatically contact the surface and measure the coordinate position. In this case, when the measurement surface is inclined with respect to the tool axis direction or the perpendicular direction, a drag event of the contact point occurs when the tool comes into contact, and an error occurs in measurement.

  In order to avoid this, the present embodiment has a function of moving the touch sensor 15 in an oblique direction and measuring the position of the contact surface. Furthermore, since the touch sensor 15 having this function enables measurement, the access direction of the sensor to the narrow portion can be controlled, and even when a sufficient sensor moving distance cannot be obtained due to interference or the like, the accuracy can be improved. It can be improved so that it can be measured.

[Sixth Embodiment] (FIG. 9)
The processing method of the present embodiment realizes a function that makes the height of adjacent scallops constant on a wide surface so that the operator can easily assume the final finished curved surface shape of grinder processing from the remaining scallop state during machining. This is an example.

  FIG. 9 is an explanatory view showing a scallop remaining state and its processing method during machining.

  As shown in FIG. 9, in the present embodiment, the scallop height difference h2 is calculated from the coordinate information of the adjacent machining points of the workpiece 1, and the scallop height difference h2 is set to a limit value (for example, If it exceeds 0.3 mm, etc., the deepest point that becomes the limit value is calculated, and a machining mark is attached with a tool. Thereby, the grinder processing worker can visually recognize how much the scallop difference is, and can easily calculate the target value of the finishing amount.

  In the machining method according to the present embodiment, in order to efficiently perform the final finishing process by hand using a tool such as the grinder 17, the NC machine tool is reloaded once at the stage of rough machining by the grinder 17, It has a function of marking and informing a part where a surplus of a thickness of or more remains in a wide range.

  By applying this method, the surplus 18 generated by machining is automatically measured by an NC machine tool, and the number of display scallop marks required based on the measurement results is set. Based on these scallop marks, Automatic determination of the ease of discriminating the target value of grinder processing by hand is performed, and marking is performed based on this determination.

  By implementing this method, marking is performed on a predetermined curved surface of a workpiece with a ball end mill, and NC machining is used instead of hand finishing to achieve a certain degree of finishing. Can be omitted.

  According to the present embodiment, in order to efficiently perform the final finishing process manually by the grinder 17 or the like, once the roughing process by the grinder 17 or the like is performed, the NC machine tool is reloaded and a predetermined thickness is obtained. This has a function of marking and informing a portion where a surplus surplus is left in a wide range, so that manual finishing by the grinder 17 or the like can be minimized.

[Seventh Embodiment] (FIGS. 10 and 11)
In this embodiment, the surplus generated by machining is automatically measured with high accuracy by an NC machine tool, and it is automatically determined which part can be marked with the scallop mark removal depth to minimize the number of machining points. A determination method will be described.

  FIG. 10 is a perspective view showing the overall configuration of the workpiece 1, and FIG. 11 is an enlarged view showing a marking portion.

  As shown in FIG. 10, the deepest point processing mark 19 is applied to the screw blade 3 of the workpiece 1 as a marking indicating a processing portion for removing surplus.

  Then, as shown in FIG. 11, from the numerical information of the tool diameter (for example, φ20 mm) and the remaining amount of scallop, the deepest point processing mark 19 is processed at a fine pitch for the portion G having a large surplus, and the surplus For the small portion H, the deepest point processing mark 19 is processed at a rough pitch.

  For these processes, using the internal calculation function of the NC machine tool, the remaining amount of scallop is calculated from the curvature of the curved surface to be processed and the diameter value of the applied tool, and there is a large scallop within the predetermined three-dimensional coordinates. For a portion that remains continuously, for example, a processing point is determined by calculating a pitch such as every 5 mm. The part where the small scallops remain apart may have a long marking pitch.

  According to the present embodiment, the surplus generated by machining is automatically measured with high accuracy by an NC machine tool, and it is automatically determined which part is displayed with a scallop mark to facilitate grinder machining. The function to continue processing can be realized.

[Eighth Embodiment] (FIG. 12)
In the machining method of this embodiment, shape data of parts already processed and subjected to performance tests are stored in advance in an NC machine tool, and a function for performing process capability analysis and statistical test is added to improve performance. This is an example of providing a machine tool having a function of statistically calculating a part that greatly affects and a curved surface shape tolerance.

  As shown in FIG. 12, this calculation is performed inside the NC device 20. The feature of this method is that the calculation result is converted into processing data as it is and immediately fed back to the processing of the surface of the screw blade 3. The point is that the machining can be continued.

  In other words, in order to allow the NC machine tool to automatically analyze the geometrical shape of the part that greatly affects the performance, the shape after grinding of multiple parts to be machined is measured with the NC machine tool, and the measurement data Is stored and stored, and an index of flow performance at the rated rotational operating point obtained from the performance test is input at a later date.

  By this input, process capability analysis and statistical test are performed, and a function as an NC machine tool having a function of notifying a designer of a shape portion that affects performance is obtained.

  According to the present embodiment, it is possible to exhibit a function of automatically analyzing a geometric shape of a part that greatly affects performance by using an NC machine tool, determining a necessary part with high accuracy, and notifying a designer.

DESCRIPTION OF SYMBOLS 1 Workpiece 2 Cylinder 3 Screw blade 3a, 3b Connection part 4 Boss 5 Corner R surface 6 Touch sensor 7 Processing tool 8 (8a, 8b) Scallop 9 (9a, 9b) The deepest processing target point 10 Tool locus 11 The curvature is the most Large point 12 (12a, 12b) Line 13, 14 Marking 15 Touch sensor 16 Curved surface 17 Grinder 18 Extra thickness 19 Deepest point machining mark 20 NC device F Region L Best fit curve

Claims (6)

  1. A method of positioning and machining the part at the time of machining a part having a curved blade shape, the cutting target point being deepest between the adjacent scallops of the part, which is generated by the cutting work. Based on the line connecting the machining coordinate points of adjacent tool trajectories, the point with the largest curvature of the part is calculated in advance, and the machining point for positioning the end mill is set at the deepest point of this point. A method of processing a curved part, wherein the end mill is positioned and processed at a position.
  2. 2. The machining method according to claim 1, wherein a portion where the amount of scallop exceeds a certain value is calculated in advance, and the small-diameter ball end mill to the deepest point is calculated based on the coordinate values of three adjacent machining points. A method of processing curved surface parts to be processed.
  3. 2. The machining method according to claim 1, wherein a part that is likely to vary in machining is grasped in advance based on past machining results, and an area including the part is defined in three-dimensional coordinates and designated by the area. A machining method for curved surface parts that automatically measures the measured points and calculates the difference between the target machining amount and the actual amount, thereby controlling the correction amount of the tool.
  4. 2. The machining method according to claim 1, wherein a best fit curve of four consecutive machining points of adjacent tool buses is calculated by a calculation function in the machine tool to detect a deepest point, and machining marking is performed at the deepest point with a tool. Method for processing curved shape parts.
  5. 2. The machining method according to claim 1, wherein a small-diameter corner R portion is automatically measured by a surface measurement sensor used on a machine tool, and in this case, the sensor probe is moved from the normal direction of the surface having curvature. A method for machining curved surface parts that automatically position and access the sensor from the direction perpendicular to the surface to be measured.
  6. 2. The machining method according to claim 1, wherein the surplus produced by machining is automatically measured by an NC machine tool, the number of display scallop marks is set based on the measurement result, and the scallop marks are based on these scallop marks. A method of processing a curved shape part that performs automatic determination of ease of discriminating a target value of grinder processing by manual work and performs marking based on this determination.
JP2009028683A 2009-02-10 2009-02-10 Working method for curved surface shape component Pending JP2010184302A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102357666A (en) * 2011-07-18 2012-02-22 西安交通大学 Three-coordinate end milling method for blade with freeform surface by using flat-bottomed cutter
CN102922244A (en) * 2012-11-21 2013-02-13 哈尔滨东安发动机(集团)有限公司 Processing method for realizing integrity of surface of titanium alloy impeller

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102357666A (en) * 2011-07-18 2012-02-22 西安交通大学 Three-coordinate end milling method for blade with freeform surface by using flat-bottomed cutter
CN102922244A (en) * 2012-11-21 2013-02-13 哈尔滨东安发动机(集团)有限公司 Processing method for realizing integrity of surface of titanium alloy impeller

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