Correction-free processing device for reference deformation resistance of rotor bushing

Abstract

The utility model belongs to the technical field of machine manufacturing, and relates to a correction-free rotor bushing reference anti-deformation processing device which comprises a fixed base and a horizontal positioning block, the upper end face of the fixed base is provided with a horizontal correction reference belt, and the right end face of the fixed base is provided with a positioning inclined plane which is matched with the reference end face of a part. A reference positioning block is arranged on the positioning inclined surface, an arc surface is arranged on the reference positioning block, the arc surface is in reference fit with the outer diameter of the part, at least two first avoiding holes are formed in the middle of the positioning inclined surface and are matched with a non-reference shaft body at the left end of the part, second avoiding holes are formed in the upper part of the positioning inclined surface, and the number of the second avoiding holes is the same as that of the first avoiding holes; the first avoiding holes and the second avoiding holes are in one-to-one correspondence, and the corresponding first avoiding holes are communicated with the corresponding second avoiding holes; the horizontal positioning block is used for being embedded into the right end of a rotor lining, arc stop blocks are fixedly installed on the upper plane and the lower plane of the horizontal positioning block and matched with an inner arc at the right end of a part, a fixing threaded hole perpendicular to the inclined plane is formed in the center of the inclined plane of the positioning inclined plane, and the clamping bolt penetrates through a center through hole of the horizontal positioning block and is in threaded connection with the fixing threaded hole. And therefore, the part is fixed.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical manufacturing technology and relates to a machining device for anti-deformation reference of rotor bushing without correction. Background Technology

[0002] With the rapid development of mechanical technology, the performance stability requirements of hydraulic piston pumps are also gradually increasing. As one of the components ensuring stable system operation, the rotor bushing plays a crucial role in protecting the rotor base and drive shaft during vibration and impact, ensuring smooth rotor movement along a predetermined trajectory, reducing contact between the rotor and related components, and minimizing friction and wear. Currently, due to the special structure of the rotor bushing, the central opening slot serves as a horizontal correction reference. The correctable portion is a discontinuous, short, and narrow plane, making traditional pressure gauge correction methods and CNC probe measurement methods technically difficult and inaccurate. This directly affects the machining accuracy of dimensions such as the outer diameter bevel of the rotor bushing, and also results in low machining efficiency. Furthermore, the thin-walled hollow outer diameter of the upper part of the rotor bushing, used as an outer circle positioning and clamping reference, makes the part prone to plastic deformation, making it difficult to balance the contradiction between clamping force and cutting force. This leads to poor dimensional consistency across product batches and potential quality and safety hazards.

[0003] In summary, it is necessary to design a method that can overcome the problem of poor correction accuracy caused by the structural characteristics of the parts themselves, as well as the problem of plastic deformation caused by clamping and cutting tools, so as to improve processing efficiency, ensure overall processing accuracy, and ensure the consistency of process dimensional accuracy requirements of product batches. Utility Model Content

[0004] The purpose of this utility model is:

[0005] This invention provides a machining device that can effectively achieve rotor bushing reference without correction and resist deformation. This device can control deformation during the clamping process of the thin-walled hollowed-out portion at the right end of the rotor bushing, avoiding plastic deformation while eliminating the need to correct short horizontal references. It transforms the machining of inclined surfaces into planar machining, improving machining efficiency while ensuring the machining accuracy of process dimensions.

[0006] Technical solution:

[0007] A machining device for anti-deformation reference of a rotor bushing without calibration includes a fixed base and a horizontal positioning block. The upper end face of the fixed base is provided with a horizontal calibration reference band, and the right end face of the fixed base is provided with a positioning inclined surface that mates with the reference end face of the part. A reference positioning block is provided on the positioning inclined surface, and an arc surface is provided on the reference positioning block, which mates with the outer diameter reference of the part. At least two first clearance holes are provided in the middle of the positioning inclined surface, which mate with the non-reference shaft at the left end of the part. A second clearance hole is provided at the upper part of the positioning inclined surface. The number of second clearance holes is the same as the number of first clearance holes, and their positions correspond one-to-one, and the corresponding first clearance holes and second clearance holes are connected. The horizontal positioning block is used to embed into the right end of the rotor bushing. Arc stops are fixedly installed on the upper and lower planes of the horizontal positioning block, which mate with the inner arc at the right end of the part. A fixing threaded hole perpendicular to the inclined surface is opened in the center of the positioning inclined surface. A clamping bolt passes through the central through hole of the horizontal positioning block and is screwed into the fixing threaded hole, thereby fixing the part.

[0008] Furthermore, clamping blocks are provided at the bottom of the front and rear ends of the fixed base, which are used to clamp the processing device during the processing of the rotor bushing.

[0009] Furthermore, the flatness of the horizontal correction reference band is no greater than 0.003 mm.

[0010] Furthermore, the flatness of the positioning inclined surface is no greater than 0.003 mm.

[0011] Furthermore, the contour of the arc surface of the reference positioning block is no greater than 0.005 mm.

[0012] Furthermore, the upper and lower flatness of the horizontal positioning block is no greater than 0.003 mm.

[0013] Furthermore, the maximum gap between the arc stop and the arc of the part is no greater than 0.01mm.

[0014] Beneficial effects

[0015] This utility model provides a machining device for deformation-resistant rotor bushing references without calibration. It is rationally designed and highly practical. Through the reliable reference transmission of the contour positioning block, it effectively positions discontinuous, short, and small surfaces, solving the problems of poor accuracy and low efficiency of traditional pressure gauges in the original horizontal reference calibration process. It overcomes the difficulty of CNC probes measuring inclined surfaces, simplifies the difficulty of calibrating the reference level, and improves the machining accuracy of parts. The excellent contour filling state of the contour positioning block ensures deformation control of parts during the clamping process of thin-walled hollow outer diameters, avoiding plastic deformation. It also provides good support for the cutting tool during cutting, improving the stability of high-load cutting and ensuring the consistency of product batch quality. The inclined surface positioning block's positioning method for the outer diameter of the part effectively transforms inclined surface machining into planar machining, reducing the technical difficulty of machining while weakening the dependence on machining equipment. It reduces the need for 4-axis or higher equipment to 3-axis machining, enriching machining methods and providing a guiding scheme for the deformation-resistant positioning design of similar rotor bushing references. Attached Figure Description

[0016] Figure 1 A three-dimensional diagram of a machining device for anti-deformation reference of a rotor bushing without correction;

[0017] Figure 2 A schematic diagram of a machining device for anti-deformation reference of a rotor bushing without correction;

[0018] Figure 3 Schematic diagram of the various references of the rotor bushing;

[0019] The components are: 1-fixed base, 2-horizontal correction reference band, 3-reference positioning block, 4-first clearance hole, 5-second clearance hole, 6-positioning inclined surface, 7-fixing threaded hole, 8-horizontal positioning block, 9-arc stop block, and 10-clamping bolt. Detailed implementation method:

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. The described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and specific examples:

[0022] This utility model provides a machining device for anti-deformation of rotor bushing reference without correction, comprising: a fixed base 1, a horizontal correction reference band 2, a reference positioning block 3, a first clearance hole 4, a second clearance hole 5, a positioning inclined surface 6, a fixing threaded hole 7, a horizontal positioning block 8, an arc stop block 9, and a clamping bolt 10. The fixed base 1 has clamping blocks fixedly installed at its front and rear ends for reliable clamping of the entire machining device. The upper end face of the fixed base 1 has a horizontal correction reference band 2 for the initial horizontal manufacturing reference of the machining device and for correcting the horizontal reference each time the machining device is clamped. The right end face of the fixed base 1 has a positioning inclined surface 6 for positioning the reference end face of the part and for converting the angled inclined surface into a plane during part machining. A reference positioning block 3 is provided on the inclined surface of the positioning inclined surface 6, and the reference positioning block 3 has an arc surface that mates with the outer diameter reference of the part for precise positioning of the outer diameter reference of the part. At least two first clearance holes 4 are provided on the inclined surface of the positioning inclined surface 6 for clearance of the non-reference shaft at the left end of the part. The upper part of the positioning inclined surface 6 is provided with a second clearance hole 5 for machining clearance during the cutting process of the tool. The number of second clearance holes 5 is the same as that of first clearance holes 4, and their positions correspond one-to-one. The corresponding first clearance holes 4 and second clearance holes 5 are connected. The center of the inclined surface of the positioning inclined surface 6 is provided with a fixing threaded hole 7 perpendicular to the inclined surface for good fixation of the part.

[0023] Furthermore, the processing device also includes a horizontal positioning block 8, which is used to embed into the right end of the rotor bushing, so that the horizontal angle of the rotor bushing is converted to the positioning reference and the planes on the upper and lower sides of the horizontal positioning block 8, so as to achieve the purpose of eliminating the need for correction before processing and providing support for the part that will be deformed during cutting.

[0024] Among them, the upper and lower planes of the horizontal positioning block 8 are fixedly installed with arc-shaped stop blocks 9, which cooperate with the inner arc of the thin-walled hollow part of the rotor bushing to support the inner arc of the thin-walled hollow part of the rotor bushing and prevent plastic deformation during cutting.

[0025] The clamping bolt 10 first passes through the central through hole of the horizontal positioning block 8 and is screwed into the fixing threaded hole 7, thereby securing the part well.

[0026] The flatness of the horizontal correction reference band 2 is no greater than 0.003 mm, and it is used as a horizontal reference for the manufacturing and processing device and as a horizontal correction reference each time the processing device is clamped.

[0027] The flatness of the positioning inclined surface 6 is no greater than 0.003 mm, and it is used for the precise positioning of the reference end face of the part on the inclined surface.

[0028] The contour of the arc-shaped surface of the reference positioning block 3 is no greater than 0.005mm, and it is used for precise positioning of the outer diameter reference of the part.

[0029] The upper and lower flatness of the horizontal positioning block 8 is no greater than 0.003mm, which is used to convert the horizontal angle of the part to the positioning reference, thereby achieving the effect of eliminating the need for horizontal correction.

[0030] The maximum gap between the arc-shaped stop block 9 and the inner arc of the thin-walled hollow part of the rotor bushing is no more than 0.01mm, which is used to ensure the maximum deformation during cutting and prevent the generation of plastic deformation under high load cutting.

[0031] This utility model provides a machining device for deformation-resistant rotor bushing references without calibration. It is rationally designed and highly practical. Through the reliable reference transmission of the contour positioning block, it effectively positions discontinuous, short, and small surfaces, solving the problems of poor accuracy and low efficiency of traditional pressure gauges in the original horizontal reference calibration process. It overcomes the difficulty of CNC probes measuring inclined surfaces, simplifies the difficulty of calibrating the reference level, and improves the machining accuracy of parts. The excellent contour filling state of the contour positioning block ensures deformation control of parts during the clamping process of thin-walled hollow outer diameters, avoiding plastic deformation. It also provides good support for the cutting tool during cutting, improving the stability of high-load cutting and ensuring the consistency of product batch quality. The inclined surface positioning block's positioning method for the outer diameter of the part effectively transforms inclined surface machining into planar machining, reducing the technical difficulty of machining while weakening the dependence on machining equipment. It reduces the need for 4-axis or higher equipment to 3-axis machining, enriching machining methods and providing a guiding scheme for the deformation-resistant positioning design of similar rotor bushing references.

[0032] Please see Figure 2 , Figure 3 The usage process of this utility model is as follows:

[0033] 1. First, use the pressure plate to press the clamping blocks on the front and rear ends of the fixed base 1, then correct the horizontal reference band 2 to the horizontal reference, and adjust the clamping position to complete the fixing of the overall processing device.

[0034] 2. Place the part into the first clearance hole 4, so that the reference end face of the part abuts against the positioning inclined surface 6, and the reference outer diameter of the part abuts against the reference positioning block 3.

[0035] 3. Rotate the part and adjust the angle of the opening slot so that the horizontal angular positioning reference is roughly parallel to the upper plane of the processing device. At the position where the arc stop 9 coincides with the arc surface of the part, embed the horizontal positioning block 8 into the thin-walled hollow slot of the part to complete the deformation control of the part.

[0036] 4. Pass the clamping bolt 10 through the center through hole of the horizontal positioning block 8 and screw it into the thread of the fixing threaded hole 7. Tighten it to fix the part well and then complete the machining requirements of the process dimensions.

[0037] This utility model has many specific applications. The above description is only a preferred embodiment of this patent and does not limit the implementation method and protection scope of this patent. For those skilled in the art, the solutions obtained by making equivalent substitutions and obvious changes under the premise of the principle of this patent should be included in the protection scope of the patent.

Claims

1. A machining apparatus for anti-deformation reference of rotor bushing without correction, characterized in that, The system includes a fixed base (1) and a horizontal positioning block (8). The upper surface of the fixed base (1) is provided with a horizontal correction reference band (2). The right end surface of the fixed base (1) is provided with a positioning inclined surface (6), which mates with the reference end face of the part. A reference positioning block (3) is provided on the positioning inclined surface (6), and an arc surface is provided on the reference positioning block (3), which mates with the outer diameter reference of the part. At least two first clearance holes (4) are provided in the middle of the positioning inclined surface (6), which mate with the non-reference shaft at the left end of the part. A second clearance hole (5) is provided at the upper part of the positioning inclined surface (6). The number of the two clearance holes (5) is the same as that of the first clearance hole (4), and their positions correspond one-to-one. The corresponding first clearance hole (4) and second clearance hole (5) are connected. The horizontal positioning block (8) is used to embed into the right end of the rotor bushing. The upper and lower planes of the horizontal positioning block (8) are fixedly installed with arc-shaped blocks (9) that cooperate with the inner arc of the right end of the part. The center of the inclined surface of the positioning slope (6) is provided with a fixed threaded hole (7) perpendicular to the slope. The clamping bolt (10) passes through the central through hole of the horizontal positioning block (8) and is screwed into the fixed threaded hole (7) to fix the part.

2. The machining apparatus for anti-deformation reference of rotor bushing without correction according to claim 1, characterized in that, The fixed base (1) has clamping blocks at the bottom of its front and rear ends, which are used to clamp the processing device during the processing of the rotor bushing.

3. The machining apparatus for anti-deformation reference of rotor bushing without correction according to claim 1, characterized in that, The flatness of the horizontal correction reference band (2) is no greater than 0.003 mm.

4. The machining apparatus for anti-deformation reference of rotor bushing without correction according to claim 1, characterized in that, The flatness of the positioning inclined surface (6) is no greater than 0.003 mm.

5. The machining apparatus for anti-deformation reference of rotor bushing without correction according to claim 1, characterized in that, The profile of the arc surface of the reference positioning block (3) is no greater than 0.005mm.

6. The machining apparatus for anti-deformation reference of rotor bushing without correction according to claim 1, characterized in that, The upper and lower flatness of the horizontal positioning block (8) is no greater than 0.003 mm.

7. The machining apparatus for anti-deformation reference of rotor bushing without correction according to claim 1, characterized in that, The maximum gap between the arc stop (9) and the arc of the part is no greater than 0.01mm.

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