Method for machining a counterpiece and counterpiece

Abstract

The application discloses a counter surface machining method and a counter surface. The counter surface machining method comprises the following steps: machining a fourth profile and a fifth profile on a blank workpiece, and taking the fourth profile and the fifth profile as reference surfaces; machining a measuring hole by taking the fourth profile as a reference; installing a process ball on an axis of the measuring hole, and measuring a distance from a ball center of the process ball to the fifth profile; aligning the ball center of the process ball and the fourth profile, converting a processing size of a circular arc surface by an actual value from a simulation center of the circular arc surface to the ball center of the process ball, and machining the circular arc surface; aligning the ball center of the process ball, converting a processing size of a first groove by an actual value from a simulation center of a circular arc surface to the ball center of the process ball, and machining the first groove by rotating by 15 degrees; aligning the ball center of the process ball, taking a simulation conversion line of the circular arc surface as a simulation conversion line passing through the second profile, converting a distance from an intersection point of the simulation conversion line and the fifth profile and the sixth profile to an axis of the process ball into a distance between the process ball and the second profile as a processing and measuring size, and machining the second profile.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of process manufacturing, in particular, to a processing method for a counter surface part. In addition, the present application also relates to a counter surface part using the processing method for a counter surface part. BACKGROUND

[0002] The critical dimension of the counter surface part is the same as that of the guide vane, and the tolerance is 1 / 10 of the guide vane tolerance. The counter surface part is used together with the measuring tool as a standard part installed on the measuring tool. The value of the acting dimension of the counter surface part is measured by using the dial gauge, and after the value is recorded, the counter surface part is taken down. The guide vane is installed, and the value at the same position is measured by using the dial gauge. Whether the guide vane is qualified is determined by the change of the value. The counter surface part of this type has the characteristics of high dimensional accuracy and complex profile. Many dimensions on the tooling drawing are double-angle dimensions. Many dimensions cannot be used as processing references. In particular, for some space dimensions and double-bevel dimensions.

[0003] Reference Figure 1 A processing dimension drawing of a counter surface part is provided. The processing difficulties are as follows: the dimension tolerance of the circular arc R77mm is 0.02mm. The center of the circular arc is outside the counter surface part. The circular arc has no reference for processing. In the past, the circular arc R77 needs to be clamped on a tool grinder for processing. Reference Figure 2 The tooling plate needs to be designed according to the structure of the counter surface part. The tooling plate has three holes for clamping the pins and positioning the counter surface part. A through hole is formed at one end of the tooling plate. The counter surface part is installed on the tooling plate with the hole as the center of the circular arc. The hole of the tooling plate clamps the core rod. The tool grinder grinds the circular arc of the counter surface part through the center hole of the core rod. The operator needs to send the workpiece for inspection every several times of processing. The operation is repeated until the dimension is qualified. The machine tool and personnel occupy a long time. The processing efficiency is low and the accuracy is low. The intersection line of the circular arc surface R77 and the reference line is 40mm away from the intersection line of the 10mm groove bottom 15° angle surface and the end surface. The tolerance is ±0.005mm. Since the intersection lines are spatially perpendicular, the tolerance is difficult to guarantee. It is difficult to directly measure during processing. The symmetry center of the 10mm wide groove is on the reference line K and forms a 7° angle with the horizontal line. The reference line K cannot be used for processing and measurement. It is difficult to directly measure during processing. The intersection point dimensions of the double-bevel surface are 12.1499mm and 8.9029mm. The tolerance is small and cannot be directly processed and measured. The processing references of each dimension are inconsistent and cannot be related to each other. There is no better perpendicular surface as a reference. On the other hand, during the processing of the double-bevel surface, the sine precision flat-nose pliers are generally used for adjustment and clamping before grinding. However, during the grinding process, the operator cannot measure the intersection point dimension. The processing dimension is not easy to grasp. The counter surface part is easily scrapped. Therefore, the counter surface part needs to be sent to the three-coordinate meter for processing. The result is used for re-adjusting and processing on the machine tool. The processing and inspection are repeated. The efficiency is low. SUMMARY

[0004] The application provides a counter surface machining method and a counter surface to solve the technical problem that multiple structures in the counter surface machining of the positioning and guiding vane are difficult to directly measure and need to be frequently transferred.

[0005] According to one aspect of the application, a counter surface machining method is provided for measuring the position and size of a positioning groove of a positioning and guiding vane. The counter surface is a hexahedral structure. A first profile surface is parallel to a third profile surface. One side of a second profile surface is connected to the first profile surface at a preset angle, and the other side is connected to the third profile surface at a preset angle. A fourth profile surface is located on the opposite side of the second profile surface and is connected to the first profile surface and the third profile surface at 90°, respectively. A fifth profile surface is connected to the first profile surface at a preset angle. A sixth profile surface is parallel to the fifth profile surface. The fifth profile surface forms a first protruding structure on one side edge of the first profile surface and a second protruding structure on one side of the third profile surface. The sixth profile surface forms a third protruding structure. The first protruding structure is provided with a first groove with a slope of 15°. The outer surface of the third protruding structure is a circular arc surface. The counter surface is provided with a measuring hole penetrating through the fifth profile surface and the sixth profile surface. The counter surface machining method comprises the following steps:

[0006] S1. Machining the fourth profile surface and the fifth profile surface of the blank workpiece as reference surfaces.

[0007] S2. Machining the measuring hole with the fourth profile surface as the reference.

[0008] S3. Installing a process ball on the axis of the measuring hole and measuring the distance from the center of the process ball to the fifth profile surface.

[0009] S4. Aligning the center of the process ball with the fourth profile surface. The actual value of the center of the circular arc surface to the center of the process ball is converted into the machining size of the circular arc surface, and the circular arc surface is machined.

[0010] S5. Aligning the center of the process ball. The actual value of the center of the circular arc surface to the center of the process ball is converted into the machining size of the first groove, and the first groove is machined at an angle of 15°.

[0011] S6. Aligning the center of the process ball. The center of the circular arc surface is used as the simulation conversion line of the second profile surface. The distance from the intersection point of the simulation conversion line and the fifth profile surface and the sixth profile surface to the axis of the process ball is converted into the distance between the process ball and the second profile surface as the machining measurement size, and the second profile surface is machined.

[0012] As a further improvement of the above technical solution, step S1 comprises: heat treatment of the blank workpiece, grinding machining of the fourth profile surface and the fifth profile surface of the blank workpiece, surface roughness less than Ra0.2, and flatness less than 0.002.

[0013] As a further improvement of the above technical solution, the step S2 comprises: grinding the measuring hole, the surface roughness is less than Ra0.4, and the flatness is less than 0.005.

[0014] As a further improvement of the above technical solution, the step S4 comprises: processing the circular arc surface by precise wire cutting or coordinate grinding; and the step S5 comprises: processing the first groove by a tool grinder or precise wire cutting.

[0015] As a further improvement of the above technical solution, the process ball comprises a spherical part, a supporting part and a positioning part, the positioning part is used for being inserted into the measuring hole, and the supporting part is used for abutting against the fifth profile to support the spherical part.

[0016] As a further improvement of the above technical solution, the spherical part has a spherical roundness of 0.001 mm, a concentricity of the spherical part and the positioning part of 0.001 mm, and an end face runout of 0.002 mm.

[0017] As a further improvement of the above technical solution, the processing method of the spherical part comprises:

[0018] A1: processing the spherical surface of the spherical part by optical grinding, and leaving a grinding of 0.4-0.5 mm;

[0019] A2. coarse lapping the spherical surface, and leaving a lapping of 0.1-0.15 mm;

[0020] A3. heat treatment;

[0021] A4. semi-fine lapping;

[0022] A5. fine lapping.

[0023] As a further improvement of the above technical solution, the processing method of the process ball comprises: turning the outer wall of the positioning part and leaving a turning of 0.4-0.5 mm, turning the end face of the supporting part and leaving a turning of 0.2-0.3 mm, coarse grinding the end face of the supporting part, fine grinding the outer wall of the positioning part and leaving an interference of 0.005-0.008 with respect to the measuring hole, and a runout of less than 0.01, and fine grinding the end face of the supporting part.

[0024] As a further improvement of the above technical solution, the processing method comprises: building a three-dimensional model of the counter part by using the standard size of the counter part in the three-dimensional drawing software, and obtaining the distance from the ball center to the circular arc surface, the distance from the ball center to the first side wall of the first groove, the distance from the ball center to the second side wall of the first groove, the distance from the ball center to the high end of the bottom surface of the first groove, the distance from the high end of the bottom surface of the first groove to the second profile, and the distance from the ball center to the second profile by using the actual measured value of the distance from the ball center of the process ball to the fifth profile in the step S3.

[0025] According to another aspect of the present application, a counter part is also provided, which applies the counter part processing method described above.

[0026] The present application has the following beneficial effects:

[0027] The machining method can obtain the theoretical value of the shortest distance between the process ball and the circular arc surface by first machining the fourth profile and the fifth profile as the reference surface, machining the measuring hole based on the fourth profile, installing the process ball through the measuring hole of the workpiece, measuring the distance from the center of the process ball to the fifth profile, and further obtaining the theoretical value of the center of the simulated circle of the circular arc surface. Based on this, the machining amount of the circular arc surface is converted, and based on the process ball and the fourth profile, the machining size is converted based on the above-mentioned conversion, and further based on the precise wire cutting or coordinate grinding, the circular arc surface can be machined, instead of the tool grinding machining mode in the prior art, which greatly improves the working efficiency and precision, avoids repeated machining and multiple inspections, improves the machining efficiency, and avoids the design and manufacture of the profile plate, reduces the machining difficulty and cost, and at the same time, after measuring the actual value of the center of the process ball to the fifth profile, the machining size of the first groove and the machining size of the second profile can be converted based on the actual position of the center of the process ball and the theoretical value of each point and surface of the workpiece. According to the conversion size, the size accuracy is ensured based on the process ball and other related profiles, effectively solving the problems of large clamping difficulty, large machining difficulty and low size accuracy, and the one-time delivery qualified rate of the counter part is 100%.

[0028] In addition to the purposes, features and advantages described above, the present application has other purposes, features and advantages. The present application will be further described below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0029] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application, and are incorporated in and constitute a part of this application. The embodiments of the application illustrated in the drawings, and their description thereto, are presented to provide the practitioner of the art with a thorough and enabling disclosure of the application, and are not intended to be limiting of the application upon the scope as claimed. In the drawings:

[0030] Figure 1 is a tooling diagram of a pair of counter parts in the prior art;

[0031] Figure 2 is a profile plate schematic diagram in the prior art;

[0032] Figure 3 is a schematic diagram of the actual position of the process ball of the first embodiment of the present application;

[0033] Figure 4 is a size conversion schematic diagram of the first embodiment of the present application Figure 1 ;

[0034] Figure 5 is a size conversion schematic diagram of the first embodiment of the present application Figure 2 ;

[0035] Figure 6is a process ball tooling drawing of embodiment one of the present application. DETAILED DESCRIPTION

[0036] The embodiments of the present application are described in detail below with reference to the accompanying drawings, but the present application can be implemented in various different ways as defined and covered by the following.

[0037] Figure 1 is a tooling drawing of a pair of surface parts in the prior art; Figure 2 is a mold plate schematic diagram in the prior art; Figure 3 is a schematic diagram of the actual position of the process ball of embodiment one of the present application; Figure 4 is a size conversion schematic diagram of embodiment one of the present application Figure 1 ; Figure 5 is a size conversion schematic diagram of embodiment one of the present application Figure 2 ; Figure 6 is a process ball tooling drawing of embodiment one of the present application.

[0038] As shown in Figures 3 to 5 , the surface part processing method of the present embodiment is used to measure the position and size of the positioning groove of the positioning and guiding blade, the surface part is a hexahedral structure, the first profile is parallel to the third profile, one side of the second profile is connected to the first profile at a preset angle, the other side is connected to the third profile at a preset angle, the fourth profile is located on the opposite side of the second profile, and the two sides are connected to the first profile and the third profile at 90° respectively, the fifth profile is at a preset angle compared to the first profile, the sixth profile is parallel to the fifth profile, the fifth profile forms a first protruding structure on one side edge of the first profile and a second protruding structure on one side of the third profile, and the sixth profile forms a third protruding structure, the first protruding structure is provided with a first groove with a slope of 15°, the outer surface of the third protruding structure is a circular arc surface, the surface part is provided with a measuring hole penetrating through the fifth profile and the sixth profile, and the surface part processing method comprises the following steps:

[0039] S1. Process the fourth profile and the fifth profile as reference surfaces on the blank workpiece;

[0040] S2. Process the measuring hole based on the fourth profile;

[0041] S3. Install a process ball on the axis of the measuring hole, and measure the distance from the ball center of the process ball to the fifth profile;

[0042] S4. Align the ball center of the process ball with the fourth profile, convert the processing size of the circular arc surface based on the actual value from the simulation center of the circular arc surface to the ball center of the process ball, and process the circular arc surface;

[0043] S5. Align the ball center of the process ball, convert the processing size of the first groove based on the actual value from the simulation center of the circular arc surface to the ball center of the process ball, and process the first groove at an angle of 15°;

[0044] S6. The center of the process ball is aligned, and the simulated center of the circular arc surface is used as the simulated conversion line of the second surface. The distance between the intersection point of the simulated conversion line and the fifth surface and the sixth surface and the process ball axis is converted to calculate the distance between the process ball and the second surface as the processing measurement size. The second surface is machined; it should be noted that the second surface is a double bevel surface, which is a spatial size that cannot be used as a processing reference. It is difficult to measure the intersection size, and it is easy to produce an over-difference rejection. By converting the intersection size of the double bevel surface to the distance size of the point and line and surface, the double bevel surface is adjusted to be flat during processing, and the second surface is directly ground and processed. Only the distance between the center of the process ball and the second surface needs to be measured to ensure the processing size accuracy, which simplifies the measurement method, greatly improves the size accuracy, reduces the processing cost, and improves the processing efficiency;

[0045] It can be understood that the processing method first processes the fourth surface and the fifth surface as a reference surface. The process ball is installed by measuring the hole of the workpiece after processing the hole based on the fourth surface. The distance between the center of the process ball and the fifth surface is measured, and the theoretical value of the center of the process ball to the simulated center of the circular arc surface is obtained, that is, the shortest distance between the process ball and the circular arc surface. Based on this, the processing amount of the circular arc surface is converted. Based on the above conversion processing size, the circular arc surface can be processed based on precise wire cutting or coordinate grinding, instead of the tool grinding method in the prior art, which greatly improves the work efficiency and precision, avoids repeated processing and multiple inspections, improves the processing efficiency, and avoids the design and manufacture of the mold plate, reduces the processing difficulty and processing cost. At the same time, after measuring the actual value of the distance between the center of the process ball and the fifth surface, the actual position of the center of the process ball and the theoretical value of each point and surface of the workpiece can be converted to calculate the processing size of the first groove and the processing size of the second surface. Using the principle that the shortest distance between points and points, lines, and surfaces is a constant value, the process ball and other related surfaces are used as a reference to ensure the size accuracy according to the converted size, effectively solving the problems of large clamping difficulty, large processing difficulty, and low size accuracy. The one-time delivery rate of the manufactured surface part is 100%.

[0046] It should be noted that the processing method further comprises: building a three-dimensional model of the counter part in the three-dimensional drawing software according to the standard size of the counter part, and obtaining the distance from the ball center to the circular arc surface, the distance from the ball center to the first side wall of the first groove, the distance from the ball center to the second side wall of the first groove, the distance from the ball center to the high end of the bottom surface of the first groove, the distance from the high end of the bottom surface of the first groove to the second surface, and the distance from the ball center to the second surface by substituting the actual measured value of the distance from the process ball center to the fifth surface in step S3 into the model; the three-dimensional drawing software can use the existing software of UG; the actual measured size is used as a reference to directly measure the distance from the process ball center to each point, line and surface by using the software, without the need for conversion and the risk of calculation errors; during processing, only the distance from the ball center to the circular arc surface after conversion is measured to ensure the size accuracy of the circular arc surface, the distances from the ball center to the first side wall of the first groove, the second side wall of the first groove and the high end of the bottom surface of the first groove after conversion are measured to ensure the size of the first groove, and the distance from the ball center to the second surface after conversion is measured to ensure the size of the double bevel surface.

[0047] In the embodiment, the process ball comprises a spherical part, a supporting part and a positioning part, the positioning part is used for inserting into the measuring hole, the supporting part is used for abutting against the fifth surface to support the spherical part, the positioning part is a pin structure, and the positioning part is inserted into the measuring hole to abut against the fifth surface to complete the tooling when installed. Based on this, the size of the spherical part, the concentricity between the spherical part and the positioning part, and the accuracy of the end surface of one end of the supporting part matched with the fifth surface should be ensured. Specifically, the spherical surface roundness of the spherical part is 0.001 mm, the concentricity between the spherical part and the positioning part is 0.001 mm, and the end surface runout is 0.002 mm. Further, a knurl structure can be further arranged on the outer wall of the supporting part to improve the surface friction so as to facilitate the operator to exert force to perform dismounting and other operations.

[0048] In the embodiment, the processing method of the spherical part comprises:

[0049] A1: the spherical surface of the spherical part is precisely machined by an optical grinding tool, and 0.4 mm-0.5 mm is left for grinding;

[0050] A2. The spherical surface is coarsely lapped to leave a lapping amount of 0.1 mm-0.15 mm;

[0051] A3. Heat treatment;

[0052] A4. Semi-precision lapping;

[0053] A5. Precision lapping.

[0054] Since the machining size angle of the process ball is high, the machining and manufacturing are more difficult, the machining method is rough and fine machining of the process ball, optical grinding of the sample plate cutter to finish the spherical surface of the ball, leaving 0.4mm-0.5mm, rough grinding of the spherical surface leaving 0.1mm-0.15mm, after heat treatment, 2-3 times of semi-fine grinding, and fine grinding to meet the size requirements.

[0055] In this embodiment, the machining method of the process ball includes:

[0056] The outer wall of the turning positioning part is left with 0.4-0.5mm, and the end face of the turning support part is left with 0.2-0.3mm;

[0057] Rough grinding of the support part end face;

[0058] Fine grinding of the outer wall of the positioning part, with a fit of 0.005-0.008 for the measuring hole, and a runout of <0.01;

[0059] Fine grinding of the end face of the support part.

[0060] That is, to improve and ensure the size requirements of the outer wall of the positioning part that needs to cooperate with the measuring hole, and the size requirements of the end face of the support part that needs to cooperate with the fifth surface of the end of the measuring hole.

[0061] In this embodiment, step S1 includes: heat treatment of the blank workpiece, grinding of the fourth surface and the fifth surface of the blank workpiece, surface roughness less than Ra0.2, flatness less than 0.002; taking the fourth surface and the fifth surface as the reference surface, the reference surface has higher machining precision and size precision;

[0062] In this embodiment, step S2 includes: grinding of the measuring hole, surface roughness controlled to be less than Ra0.4, flatness less than 0.005; to ensure the cooperation precision with the support part; in step S3, the process ball is clamped to the measuring hole, due to the length size tolerance of the process ball, after actual value measurement, the actual value of the process ball to each reference surface is converted to the related machining size of the machining surface and the process ball;

[0063] In the embodiment, step S4 includes: processing the circular arc surface by precision wire cutting or coordinate grinding; it should be noted that in the existing processing method, the workpiece needs to be clamped on a template for tool grinder processing, the template is designed according to the structure of the counter surface, the template has three holes for clamping pins, positioning the counter surface, and a through hole at one end of the template, the counter surface is clamped on the template with the hole as the center of the circular arc, the hole of the template clamps the core rod, and the tool grinder grinds the circular arc of the counter surface through the center hole of the core rod. The operator needs to send the workpiece for inspection every several times of processing, and repeatedly operates until the size is qualified. The machine tool and personnel occupy a long time, the processing efficiency is low, and the precision is low; in the processing method, the distance between the process ball and the center of the circular arc surface can be converted by taking the process ball as a reference. Only the ball center of the process ball and the fourth profile need to be found, and the precision cutting or coordinate grinding can be used for one-time processing. The circular arc surface obtained by processing has high precision and does not need to be designed and manufactured. The size precision is guaranteed only by verifying the distance from the ball center of the process ball to the circular arc surface, which greatly improves the production efficiency and reduces the processing cost.

[0064] Step S5 includes: processing the first groove by a tool grinder or precision wire cutting; before processing, the process ball is found, the angle surface of 15° is adjusted by a bench worker, the distance from the intersection line of the circular arc and the reference line to the intersection line of the 15° angle surface and the end surface is converted into the distance from the ball center to the bottom surface of the first groove, and the groove width size is converted into the distance from the ball center to the two side surfaces of the first groove. After adjusting the angle, the tool grinder or precision wire cutting is used for processing, and the size precision is guaranteed by verifying the above-mentioned size.

[0065] On the other hand, the preferred embodiment also provides a counter surface which applies the counter surface processing method. Embodiment

[0066] In the embodiment, the counter surface of the background technology is taken as an example, there are mainly four processing difficulties, the first groove of 10mm, the symmetry degree of 0.005mm, the parallelism of 0.005mm, the surface roughness of Ra=0.2um, the center reference axis K of the symmetry center and the center hole are 7°, which cannot be processed and measured; the size tolerance of the R77 inner circular arc surface is 0.02mm, the circular arc center is outside the part body, the circular arc processing has no reference, and it is easy to be out of tolerance. The distance from the intersection point of the circular arc and the reference line to the intersection line of the 15° angle surface and the end surface is 40mm, and the tolerance is ±0.005. Due to the distance from the point to the line, the size tolerance of the intersection point is not easy to guarantee; the double angle surface (the second profile) is out of tolerance, the intersection size of 12.1499mm and 8.9029mm has small tolerance, and cannot be directly processed and measured; the processing references of each size are inconsistent, and are difficult to be related to each other.

[0067] Based on the processing method of the preferred embodiment, the processing method includes:

[0068] S1. Heat treatment of the blank workpiece, grinding the fourth profile and the fifth profile of the blank workpiece, the surface roughness is less than Ra0.2 um, the flatness is less than 0.002mm; taking the fourth profile and the fifth profile as the reference surface, the higher accuracy is required for the reference surface;

[0069] S2. Grinding φ6 measuring hole with the fourth profile as the reference surface, the surface roughness is controlled to be less than Ra0.4 um, the flatness is less than 0.005mm; to ensure the matching accuracy with the support part;

[0070] S3. Installing the process ball on the axis of the φ6 measuring hole, measuring the distance from the ball center of the process ball to the fifth profile; after the actual value is measured, the actual distance between the process ball and the fifth profile is 10.868mm, and the actual distance between the process ball and the fourth profile is 35mm, the related processing size of the processing surface and the process ball is converted according to the actual value of the process ball to each reference surface, the distance from the center of the arc surface to the ball center of the process ball is 133.8661, and the standard size of the process ball from the center of the arc surface to the ball center is 56.8561;

[0071] S4. Aligning the ball center of the process ball and the fourth profile, converting the processing size of the arc surface according to the actual value of the center of the arc surface to the ball center of the process ball, and processing the arc surface; the arc surface is processed by precise wire cutting or coordinate grinding, and the operator only needs to align the ball center and the upper end surface of the part, and the arc precision is high after one-time processing, and the mold plate is not needed, the production efficiency is improved, and only the size of 56.8561 needs to be measured during measurement;

[0072] S5. Aligning the ball center of the process ball, converting the processing size of the first groove according to the actual value of the center of the arc surface to the ball center of the process ball, and processing the first groove by 15°; the first groove is processed by a tool grinder or precise wire cutting; before processing, the fifth profile is straightened, the process ball is aligned, the angle surface of 15° is matched by a bench worker, the distance from the intersection line of the arc and the reference line to the intersection line of the angle surface of 15° and the end surface is 40mm, which is converted to the distance from the ball center to the bottom surface of the first groove, which is 13.9155 mm, and the groove width size of 10mm is converted to the distance from the ball center to the two side surfaces of the first groove, which is 21.3142 mm and 11.3142 mm respectively, and after the angle is adjusted, the first groove is processed by a tool grinder or precise wire cutting, and the size accuracy can be ensured by verifying the above sizes.

[0073] S6. The center of the process ball is aligned, and the simulated center of the arc surface is used as the simulated conversion line of the second surface. The distance between the intersection point of the simulated conversion line and the fifth surface and the sixth surface and the process ball axis is converted to calculate the distance between the process ball and the second surface as the processing measurement size, and the second surface is processed; wherein the intersection point sizes 8.9029 mm and 12.1499 mm are converted into the ball-to-surface size of 13.9449 mm; the double bevel is adjusted flat by the sine precision flat pliers, and the double bevel is directly ground by the flat grinding operator. When measuring, only whether the size of 13.9449 mm is processed in place needs to be measured;

[0074] In this embodiment, the process ball processing method comprises:

[0075] A4. Semi-finishing;

[0076] A5. Finishing.

[0077] In this embodiment, the process ball processing method comprises:

[0078] According to the ф10x36 enlarged feeding, the optical grinding is used to grind the sample plate cutter to process the spherical surface of the spherical part, 0.4mm-0.5mm is left for grinding, the outer wall of the positioning part is machined, 0.4-0.5mm is left, the end surface of the support part is machined, and 0.2-0.3mm is left;

[0079] The rough grinding of the spherical surface leaves a finishing amount of 0.1mm-0.15mm;

[0080] The above processes are inspected;

[0081] Heat treatment, HRC58~62, deformation <0.10; inspection after heat treatment;

[0082] Semi-finishing of the spherical surface, leaving a finishing amount;

[0083] Tool grinding, rough grinding of the end surface of the support part;

[0084] Aging treatment, oxidation;

[0085] Grinding the spherical surface;

[0086] Fine grinding of the outer wall of the positioning part, with a interference of 0.005-0.008 according to the measured hole, and the runout is <0.01;

[0087] Fine grinding of the end surface of the support part.

[0088] In the embodiment, the machining method is used, the reference and machining size are converted by using the process ball, the tooling which cannot be machined becomes feasible, and the problems of clamping and machining difficulty are solved; the tool grinding is replaced by the fine cutting, the design and manufacturing of the mold plate are saved, and the machining difficulty and cost are reduced; the whole process route is changed, the details adjustment which is easy to produce out-of-tolerance is overcome, the machining difficulty of the special-shaped pair of surface parts is overcome, the size precision is qualified 100%, the machining is simple, and the machining cost is effectively reduced.

[0089] The above merely describes the preferred embodiments of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A method for processing a gauge for measuring the position and size of a positioning groove of a positioning and guiding vane, the gauge being a hexahedral structure, a first profile being parallel to a third profile, a second profile being connected to the first profile at a preset angle on one side and connected to the third profile at a preset angle on the other side, a fourth profile being located on the opposite side of the second profile and connected to the first profile and the third profile at 90° on both sides, a fifth profile being at a preset angle compared to the first profile, a sixth profile being parallel to the fifth profile, the fifth profile forming a first protruding structure on one side edge of the first profile and a second protruding structure on one side of the third profile, and the sixth profile forming a third protruding structure, the first protruding structure being provided with a first groove with a slope of 15°, the outer surface of the third protruding structure being a circular arc surface, and the gauge being provided with a measuring hole penetrating through the fifth profile and the sixth profile, characterized in that, The counter surface machining method comprises: S1. Machining a fourth profile and a fifth profile on a blank workpiece as reference surfaces; S2. Machining a measurement hole with the fourth profile as reference; S3. Installing a process ball on the axis of the measurement hole and measuring the distance from the center of the process ball to the fifth profile; S4. Aligning the center of the process ball with the fourth profile, converting the actual value of the distance from the center of the process ball to the center of the circular arc surface to the machining size of the circular arc surface, and machining the circular arc surface; S5. Aligning the center of the process ball, converting the actual value of the distance from the center of the process ball to the center of the circular arc surface to the machining size of the first groove, and machining the first groove by rotating 15°; S6. Aligning the center of the process ball, making an analog conversion line of the center of the circular arc surface through the second profile, converting the distance from the intersection of the analog conversion line and the fifth profile and the sixth profile to the axis of the process ball to the distance between the process ball and the second profile as the machining measurement size, and machining the second profile.

2. The method of claim 1, wherein Step S1 comprises: heat treatment of the blank workpiece, grinding the fourth profile and the fifth profile of the blank workpiece, the surface roughness is less than Ra0.2, and the flatness is less than 0.

002.

3. The method of claim 1, wherein Step S2 comprises: grinding the measurement hole, the surface roughness is less than Ra0.4, and the flatness is less than 0.

005.

4. The method of claim 1, wherein Step S4 comprises: machining the circular arc surface by precise wire cutting or coordinate grinding; and step S5 comprises: machining the first groove by cutter grinder or precise wire cutting.

5. The method of claim 1, wherein The process ball comprises a spherical part, a supporting part, and a positioning part, the positioning part is used for inserting into the measurement hole, and the supporting part is used for abutting against the fifth profile to support the spherical part.

6. The method of claim 5, wherein The spherical part has a spherical roundness of 0.001 mm, the spherical part and the positioning part have a concentricity of 0.001 mm, and the end face runout is 0.002 mm.

7. The method of claim 5, wherein the surface is a surface of a workpiece. The machining method of the spherical part comprises: A1: optical grinding of a sample tool bit to finish the spherical surface of the spherical part, leaving a grinding allowance of 0.4-0.5 mm; A2. Rough lapping of the spherical surface, leaving a lapping allowance of 0.1-0.15 mm; A3. Heat treatment; A4. Semi-precision lapping; A5. Precision lapping.

8. The method of claim 5, wherein the workpiece is a watch case. The machining method of the process ball comprises: turning the outer wall of the positioning part, leaving an allowance of 0.4-0.5 mm, turning the end face of the supporting part, leaving an allowance of 0.2-0.3 mm, rough grinding the end face of the supporting part, precision grinding the outer wall of the positioning part with an interference of 0.005-0.008 to the measurement hole, and the runout is less than 0.01; and precision grinding the end face of the supporting part.

9. The method according to any one of claims 1 to 8, wherein The machining method comprises: building a three-dimensional model of the counter surface in three-dimensional drawing software according to the standard size of the counter surface, and substituting the actual measured value of the distance from the center of the process ball to the fifth profile in step S3 into the model to obtain the distance from the center of the process ball to the circular arc surface, the distance from the center of the process ball to the first side wall of the first groove, the distance from the center of the process ball to the second side wall of the first groove, the distance from the center of the process ball to the high-end of the bottom surface of the first groove, the distance from the high-end of the bottom surface of the first groove to the second profile, and the distance from the center of the process ball to the second profile.

10. A surface member characterized by The counter surface machining method of any one of claims 1-9 is applied.

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