A machining device for converting a spatial angular reference to a deformation-resistant reference and a method of use

Abstract

The application discloses a machining device for anti-deformation of a space angle reference and a use method thereof in the technical field of machining, and belongs to the machining technical field. The machining device comprises a supporting base, an annular positioning base body, a rough correction reference belt, a reference extension mandrel, a deformation control cylinder, an eccentric directional boss, clamping bolts and a cushion block. The machining device has the advantages of reasonable design and high practicability. The combination penetration of the long mandrel, the space hole reference of the machining device base body and the part one end, and the embedded anti-deformation cylinder guide hole solves the problem that the correction reference hole cannot be corrected due to being covered in the traditional clamping process. The reasonable and effective transition mode ensures the machining precision requirement of the part other end multi-angle deflection special-shaped groove.

Description

Technical Field

[0001] This invention belongs to the field of mechanical manufacturing technology and relates to a processing device and method for converting spatial angular reference to resist deformation. Background Technology

[0002] With the rapid development of mechanical technology, the structures of some parts are becoming more complex, and the requirements for spatial dimensional accuracy are increasing. The machining surfaces and calibration datums are distributed at both ends of the part, and the part structure is a thin-walled hollow structure. Currently, it is difficult to form an effective machining datum system with non-coplanar spatial datums. Traditional clamping will cover the calibration datum hole, and it is difficult to calibrate the datum in a precise and accurate manner. In addition, the tolerance requirements for angular offset and the contradiction between the clamping force and the stable cutting force of the tool during the clamping process of the outer diameter of the thin-walled hollow part make it even more difficult to produce qualified products that meet the process dimensional requirements.

[0003] In summary, it is necessary to invent a processing device that can both convert spatial angular references and resist deformation, thereby solving the problem of correcting spatial non-coplanar angular references and avoiding the plastic deformation problem caused by clamping thin-walled hollow parts, thus improving processing efficiency while ensuring processing quality. Summary of the Invention

[0004] This invention provides a machining apparatus and method for effectively converting spatial angular references to resist deformation during clamping. This apparatus can control deformation during the clamping process of thin-walled hollow parts, avoiding plastic deformation, while simultaneously converting spatially non-coplanar references to ensure the accuracy requirements of various machining dimensions after angular deflection.

[0005] This invention provides a machining device for converting spatial angular reference to resist deformation, comprising: a support base 1, an annular positioning base 2, a coarse correction reference band 3, a reference extension mandrel 4, a deformation control cylinder 5, an eccentric orientation boss 6, a clamping bolt 7, and a pad 8; the upper surface of the support base 1 serves as the end face supporting the bottom of the part, and the annular positioning base 2 is fixedly installed thereon as the outer diameter positioning reference for the thin-walled hollow machining part; the upper end face of the support base 1 has an eccentric direction groove 9 for determining the direction of the obstructed part when the part is clamped; the upper surface of the annular positioning base 2 has a coarse reference correction band 3 for the initial manufacturing reference of the machining device and the correction of the coarse reference each time the machining device is clamped; the upper half of the annular positioning base 2 has three equally spaced threaded holes that match the external thread of the clamping bolt 7; the lower half of the annular positioning base 2 has two through holes that fit with the reference extension mandrel 4 with a small clearance.

[0006] The device includes a reference extension mandrel 4 that first passes through the lower part of the through hole of the annular positioning base 2, then through the reference of the thin-walled hollow part hole, and then through the eccentric orientation boss 6, for extending the reference of the part hole and for correcting the conversion of the spatial angular reference.

[0007] The device includes a deformation control cylinder 5 for embedding in the thin-walled hollow inner diameter of the part to control the deformation of the clamping part; the upper end face of the deformation control cylinder 5 is provided with an eccentric directional boss 6, which is used to cooperate with the eccentric direction groove on the upper end face of the support base 1; the lower part of the deformation control cylinder 5 is provided with a through hole that is clearance-fitted with the reference extension mandrel 4.

[0008] The device includes three clamping bolts 7 that are screwed into the threaded holes on the upper part of the annular positioning base 2; the head of the clamping bolts 7 is welded with a pad 8 to prevent denting and crushing in the clamped state.

[0009] The cylindricity of the inner hole of the annular positioning base 2 is no greater than 0.01 mm, and it is used for precise positioning of the outer diameter of thin-walled hollow parts.

[0010] The cylindricity of the reference extension mandrel 4 is no greater than 0.01 mm, and the gap between it and the reference hole of the part is no greater than 0.02 mm. It is used for precision correction of the front angle of the reference.

[0011] The flatness of the coarse correction reference band 3 is no greater than 0.005 mm, and it is used as a reference for manufacturing the processing device, as well as for the correction of the coarse reference each time the processing device is clamped.

[0012] The distance between the upper end face of the support base 1 and the center axis of the two holes in the lower part of the annular positioning base 2 and the height difference between the distance from the reference hole of the part to the end face of the part is no more than 0.03mm, which is used to prevent interference after the reference extension mandrel 4 passes through the hole.

[0013] The fitting clearance between the two holes in the lower part of the annular positioning base 2 and the reference extension mandrel 4 is not less than 0.1mm, which is used to eliminate batch errors in part length and prevent assembly interference problems.

[0014] The outer diameter of the deformation control cylinder 5 and the inner diameter of the thin-walled hollow part of the part are not greater than 0.02 mm, which is used to control the deformation under clamping conditions.

[0015] The pad 8 is made of copper and is used to prevent the thin-walled hollow end face of the part from being dented or damaged during the clamping process.

[0016] The present invention provides a machining device for converting spatial angular reference anti-deformation, which is rationally designed and highly practical. By using a long mandrel to penetrate the machining device base, the spatial hole reference at one end of the part, and the embedded anti-deformation cylindrical guide hole, it solves the problem of the correction reference hole being covered and unable to be corrected during traditional clamping processes. This reasonable and effective transition method extends the reference of the spatial hole, ensuring convenient and high-precision measurement of the hole's center axis. This, in turn, ensures the machining accuracy requirements of the multi-angular deflection groove at the other end of the part, enabling the machining of the hole correction reference at one end of the part, the double-ring groove on the end face, and the sloping groove on the side. This system constitutes an effective machining datum system. By embedding micro-gap cylinders inside the thin-walled hollow structure part, the maximum deformation of the thin-walled hollow part during clamping is controlled, eliminating plastic deformation after clamping. Combined with the force-shaping clamping of the three-part clamping screws, reliable clamping with uniform force on the outer diameter of the part is ensured, preventing loosening of the part during high-efficiency, high-load cutting. The reasonable design of the copper block welded to the head of the clamping screw ensures that there are no dents or indentations on the part surface under maximum clamping force, guaranteeing appearance quality while resolving the contradiction between the clamping force of the thin-walled hollow part and the stable cutting of high-efficiency tools. This provides a feasible design concept for the conversion of similar spatial angular references and deformation-resistant clamping methods, and has strong applicability. Attached Figure Description

[0017] Figure 1 A three-dimensional diagram of a machining device for resisting deformation based on a spatial angular reference.

[0018] Figure 2 A three-dimensional diagram of a deformation control cylinder and an eccentric orientation boss in a machining device for converting spatial angular reference deformation.

[0019] Figure 3 A three-dimensional view of a reference extension mandrel in a machining device for converting spatial angles to reference deformation resistance;

[0020] Figure 4 A schematic diagram of a combined processing device for converting spatial angular orientation to resist deformation;

[0021] Among them, 1-support base, 2-ring positioning base, 3-coarse correction reference band, 4-reference extension mandrel, 5-deformation control cylinder, 6-eccentric orientation boss, 7-clamping bolt, 8-pad, and 9-eccentric direction groove. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and specific examples:

[0023] Example 1: A machining device for converting spatial angular reference to resist deformation, comprising: a support base 1, an annular positioning base 2, a coarse correction reference band 3, a reference extension mandrel 4, a deformation control cylinder 5, an eccentric orientation boss 6, a clamping bolt 7, and a pad 8; the upper surface of the support base 1 serves as the bottom end face of the supporting part, and the annular positioning base 2 is fixedly installed thereon as the outer diameter positioning reference for the thin-walled hollow machining part; the upper end face of the support base 1 has an eccentric direction groove for determining the direction of the obstructed part when the part is clamped; the upper surface of the annular positioning base 2 has a coarse reference correction band 3 for the manufacturing reference of the machining device and for the correction of the coarse reference each time the machining device is clamped; the upper half of the annular positioning base 2 has three equally spaced threaded holes that match the external thread of the clamping bolt 7; the lower half of the annular positioning base 2 has two through holes that fit with the reference extension mandrel 4 with a small clearance;

[0024] Example 2: Further, the reference extension mandrel 4 first passes through the lower part of the through hole of the annular positioning base 2, then passes through the reference of the thin-walled hollow part hole, and then passes through the eccentric orientation boss 6, which is used to extend the reference of the part hole and is used for the correction of the conversion of the spatial angular reference.

[0025] Example 3: Further, the deformation control cylinder 5 is used to embed into the thin-walled hollow inner diameter of the part to control the deformation of the clamping part; the upper end face of the deformation control cylinder 5 is provided with an eccentric directional boss 6, which is used to cooperate with the eccentric direction groove on the upper end face of the support base 1; the lower part of the deformation control cylinder 5 is provided with a through hole that is clearance-fitted with the reference extension mandrel 4.

[0026] Example 4: Further, the clamping bolts 7 are three bolts that are screwed into the threaded holes on the upper part of the annular positioning base 2; the head of the clamping bolts 7 is welded with a pad 8 to prevent denting and crushing in the clamping state.

[0027] The device also includes the annular positioning base 2 with an inner hole cylindricity of no more than 0.01 mm, used for precise positioning of the outer diameter of thin-walled hollow parts.

[0028] The cylindricity of the reference extension mandrel 4 is no greater than 0.01 mm, and the gap between it and the reference hole of the part is no greater than 0.02 mm. It is used for precision correction of the front angle of the reference.

[0029] The flatness of the coarse correction reference band 3 is no greater than 0.005 mm, and it is used as a reference for manufacturing the processing device, as well as for the correction of the coarse reference each time the processing device is clamped.

[0030] The distance between the upper end face of the support base 1 and the center axis of the two holes in the lower part of the annular positioning base 2 and the height difference between the distance from the reference hole of the part to the end face of the part is no more than 0.03mm, which is used to prevent interference after the reference extension mandrel 4 passes through the hole.

[0031] Among them, the fit clearance between the two holes in the lower part of the annular positioning base 2 and the reference extension mandrel 4 is not less than 0.1mm, which is used to eliminate batch errors in part length and prevent assembly interference problems.

[0032] The outer diameter of the deformation control cylinder 5 and the inner diameter of the thin-walled hollow part of the part are not greater than 0.02 mm, which is used to control the deformation under clamping conditions.

[0033] Among them, pad 8 is made of copper and is used to prevent the thin-walled hollow end face of the part from being dented or damaged during the clamping process.

[0034] Please see Figure 1 , Figure 2 , Figure 3 This type of machining device for converting spatial angular reference anti-deformation is rationally designed and highly practical. By using a long mandrel to penetrate the machining device base, the spatial hole reference at one end of the part, and the embedded anti-deformation cylindrical guide hole, it solves the problem of the correction reference hole being covered and unable to be corrected during traditional clamping processes. The reasonable and effective transition method extends the reference of the spatial hole, ensuring convenient and high-precision measurement of the hole's center axis. This, in turn, ensures the machining accuracy requirements of the multi-angular deflection groove at the other end of the part. The machining of the hole correction reference at one end of the part, the double-ring groove on the end face, and the ramp-shaped groove on the side at the other end constitutes a complete process. This method effectively processes the datum system. By embedding micro-gap cylinders inside thin-walled hollow parts, the maximum deformation of the thin-walled hollow parts during clamping is controlled, eliminating plastic deformation after clamping. Combined with the force distribution of the three-part clamping screws, it ensures reliable clamping with uniform force on the outer diameter of the part, preventing loosening during high-efficiency, high-load cutting. The rational design of the copper block welded to the head of the clamping screws ensures no dents or damage to the part surface under maximum clamping force, guaranteeing appearance quality while resolving the contradiction between clamping force for thin-walled hollow parts and stable cutting by high-efficiency tools. This provides a feasible design approach for the conversion of similar spatial angular references and deformation-resistant clamping methods, and has strong applicability.

[0035] Please see Figure 4 The usage process of this invention is as follows:

[0036] 1. First, use a three-jaw clamp to clamp the outer diameter of the support base 1, perform horizontal correction on the coarse correction reference band 3, and at the same time determine the direction of the eccentric groove on the upper end face of the support base 1.

[0037] 2. Embed the deformation control cylinder 5 into the thin-walled hollow inner diameter of the part, ensuring that the through hole on the deformation control cylinder 5 is approximately connected to the reference hole of the part during the embedding process.

[0038] 3. Identify the eccentric direction of the eccentric directional boss 6 by using the shallow U-shaped groove reference at one end of the part, so that it corresponds to the eccentric groove on the upper surface of the support base 1, and then place it into the annular positioning base 2.

[0039] 4. Using the reference extension mandrel 4, first pass through one side hole of the lower part of the annular positioning base 2, then through the positioning hole of the hollow part of the part and the through hole set by the internal deformation control cylinder 5, and out through the other side hole of the lower end of the annular positioning base 2.

[0040] 5. Tighten the three clamping bolts 7 evenly in stages to complete the fixing of the parts.

[0041] 6. Use the CNC probe of the five-axis machining center to measure the deflection angle of the reference extension mandrel 4. After entering the preset table, complete the machining of the double ring groove on the end face and the ramp irregular groove on the side.

[0042] The present invention provides a machining device for converting spatial angular reference anti-deformation, which is rationally designed and highly practical. By using a long mandrel to penetrate the machining device base, the spatial hole reference at one end of the part, and the embedded anti-deformation cylindrical guide hole, it solves the problem of the correction reference hole being covered and unable to be corrected during traditional clamping processes. This reasonable and effective transition method extends the reference of the spatial hole, ensuring convenient and high-precision measurement of the hole's center axis. This, in turn, ensures the machining accuracy requirements of the multi-angular deflection groove at the other end of the part, enabling the machining of the hole correction reference at one end of the part, the double-ring groove on the end face, and the sloping groove on the side. This system constitutes an effective machining datum system. By embedding micro-gap cylinders inside the thin-walled hollow structure part, the maximum deformation of the thin-walled hollow part during clamping is controlled, eliminating plastic deformation after clamping. Combined with the force-shaping clamping of the three-part clamping screws, reliable clamping with uniform force on the outer diameter of the part is ensured, preventing loosening of the part during high-efficiency, high-load cutting. The reasonable design of the copper block welded to the head of the clamping screw ensures that there are no dents or indentations on the part surface under maximum clamping force, guaranteeing appearance quality while resolving the contradiction between the clamping force of the thin-walled hollow part and the stable cutting of high-efficiency tools. This provides a feasible design concept for the conversion of similar spatial angular references and deformation-resistant clamping methods, and has strong applicability.

Claims

1. A processing apparatus for converting spatial angular reference anti-deformation, characterized in that, Used to fix parts, the parts are thin-walled hollowed-out machined parts, including: support base (1), annular positioning base (2), coarse correction reference band (3), reference extension mandrel (4), deformation control cylinder (5), eccentric orientation boss (6), clamping bolt (7), and pad (8); the upper surface of the support base (1) serves as the end face of the bottom of the support part, and the annular positioning base (2) is fixedly installed as the outer diameter positioning reference of the part; the upper end face of the support base (1) has an eccentric direction groove (9) for determining the direction of the obstructed part when the part is clamped; the upper surface of the annular positioning base (2) has a coarse correction reference band (3) for the manufacturing reference of the processing device and the correction of the coarse reference each time the processing device is clamped; the upper half of the annular positioning base (2) is provided with three equally spaced threaded holes that match the external thread of the clamping bolt (7); the lower half of the annular positioning base (2) has two through holes that fit with the reference extension mandrel (4) with a small clearance; The deformation control cylinder (5) is used to be embedded in the inner diameter of the part to control the deformation of the clamping part; the upper end face of the deformation control cylinder (5) is provided with an eccentric orientation boss (6), which is used in conjunction with the eccentric direction groove on the upper end face of the support base (1); the lower part of the deformation control cylinder (5) is provided with a through hole that is clearance-fitted with the reference extension mandrel (4); The reference extension mandrel (4) first passes through a through hole in the lower part of the annular positioning base (2), then passes through the reference hole of the thin-walled hollowed-out part, then passes through the through hole of the deformation control cylinder (5), and then exits through another through hole in the annular positioning base (2); The clamping bolts (7) are three bolts that are screwed into the threaded holes on the upper part of the annular positioning base (2); the clamping bolts (7) are welded to the heads of the pads (8) to prevent denting and crushing in the clamping state.

2. The apparatus according to claim 1, characterized in that, The device also includes the annular positioning base (2) with an inner hole cylindricity not greater than 0.01 mm, used for precise positioning of the outer diameter of thin-walled hollow parts.

3. The apparatus according to claim 1, characterized in that, The cylindricity of the reference extension mandrel (4) is no greater than 0.01 mm, and the gap between it and the reference hole of the part is no greater than 0.02 mm. It is used for precision correction of the front angle of the reference.

4. The apparatus according to claim 1, characterized in that, The flatness of the coarse correction reference band (3) is no greater than 0.005 mm. It is used as a reference for manufacturing the processing device and for the correction of the coarse reference each time the processing device is clamped.

5. The apparatus according to claim 1, characterized in that, The distance between the center axis of the upper end face of the support base (1) and the lower part of the annular positioning base (2) and the distance from the reference hole of the part to the end face of the part is not greater than 0.03mm, which is used to prevent interference after the reference extension mandrel (4) passes through the hole.

6. The apparatus according to claim 1, characterized in that, The fit clearance between the two holes in the lower part of the annular positioning base (2) and the reference extension mandrel (4) is not less than 0.1mm, which is used to eliminate batch error in part length and prevent assembly interference problems.

7. The apparatus according to claim 1, characterized in that, The outer diameter of the deformation control cylinder (5) and the inner diameter of the thin-walled hollow part of the part are not greater than 0.02 mm, which is used to control the deformation under clamping conditions.

8. The apparatus according to claim 1, characterized in that, The pad (8) is made of copper and is used to prevent the thin-walled hollow end face of the part from being dented or damaged during the clamping process.

9. A method of using a machining apparatus for converting spatial angular reference deformation, characterized in that, The method is implemented using the processing apparatus as described in any one of claims 1-8, and the method includes: S1, first use three jaws to clamp the outer diameter of the support base (1), perform horizontal correction on the coarse correction reference band (3), and at the same time determine the eccentric direction of the slot on the upper end face of the support base (1). S2, embed the deformation control cylinder (5) into the thin-walled hollow inner diameter of the part, and ensure that the through hole on the deformation control cylinder (5) is connected to the reference hole of the part during the embedding process; S3, identify the eccentric direction of the eccentric orientation boss (6) by the shallow U-shaped groove reference at one end of the part, and match it with the eccentric direction slot on the upper surface of the support base (1), and then put it into the annular positioning base (2); S4, using the reference extension mandrel (4), first pass through one side hole of the lower part of the annular positioning base (2), then pass through the positioning hole of the hollow part of the part and the through hole set by the internal deformation control cylinder (5), and exit from the other side hole of the lower end of the annular positioning base (2); S5, tighten the three clamping bolts (7) evenly in stages to complete the fixed installation of the parts.

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