A rotor hole system correction-free anti-deformation processing device

Abstract

This utility model belongs to the field of mechanical manufacturing technology and relates to a rotor hole system anti-deformation machining device without correction. It includes a support base, the upper surface of which serves as the end face of the bottom of the supporting part and is fixedly installed with an angular contour pin; several elastic chucks that can deform are fixedly installed on the upper surface of the support base, the elastic chucks cooperate with the central inner hole of the part, the center of the support base is provided with an origin correction hole, and the front surface of the support base is provided with a horizontal reference correction band; this utility model can overcome the deformation problem caused by traditional clamping, provide a good cutting state for the tool during the machining process, and can accurately position the deflection angle of the rotor hole system, thereby improving machining efficiency while ensuring the accuracy requirements of the process dimensions of batch parts.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical manufacturing technology and relates to a rotor hole system anti-deformation machining device without correction. Specifically, it relates to a rotor annular matrix hole system anti-deformation precision machining device without correction. Background Technology

[0002] With the rapid development of aviation technology, the rotor, a key friction pair component of aircraft high-pressure plunger pumps, has adopted a bimetallic structure. While meeting the requirements of matching friction pair materials, improving material fatigue strength, and meeting lightweight requirements, the process size requirements of the plunger annular bore system, which is the core component of the rotor assembly, have also been gradually increased. At present, the traditional manufacturing technology of rotor plunger annular bore system can hardly meet the needs of new process level and production capacity. The uncontrollable deformation of the clamping point caused by traditional three-jaw clamping is difficult to overcome even with bushing-assisted clamping. In addition, the machining of rotor bore system is easily affected by factors such as tool wear. With the matrix machining of multiple parts, the poor consistency of bore system dimensional accuracy and shape tolerance will be aggravated.

[0003] In summary, it is necessary to design a method that can overcome the deformation problem of clamping points caused by traditional clamping, and can improve the overall machining efficiency and ensure the consistency of hole system dimensions by simplifying the correction method while ensuring the overall machining accuracy of the plunger hole system through high-precision angular positioning. Utility Model Content

[0004] The purpose of this utility model is:

[0005] A deformation-resistant machining device for rotor hole systems without correction is provided. It can overcome the deformation problem caused by traditional clamping, provide a good cutting state for the tool during the machining process, and accurately position the deflection angle of the rotor hole system. While improving machining efficiency, it can ensure the accuracy requirements of the process dimensions of batch parts.

[0006] Technical solution:

[0007] A non-correction, deformation-resistant machining device for rotor hole systems is used to fix a part, the part being a rotor machining component, including a support base. The upper surface of the support base serves as the end face supporting the bottom of the part, and an angular contour pin is fixedly installed thereon. Several deformable elastic chucks are fixedly installed on the upper surface of the support base. The elastic chucks cooperate with the central inner hole of the part. An origin correction hole is opened at the center of the support base, and a horizontal reference correction band is provided on the front surface of the support base.

[0008] Furthermore, the upper surface of the support base is provided with a fixing mounting hole that is interference-fitted with the lower outer diameter of the elastic chuck for fixing the elastic chuck, and a fixing threaded hole is provided at the lower part of the fixing mounting hole.

[0009] Furthermore, the device also includes an internal expansion screw, the lower end of which passes through the through hole of the elastic collet and is screwed into the fixed threaded hole.

[0010] Furthermore, the outer diameter of the elastic clamp has multiple evenly spaced straight grooves.

[0011] Furthermore, a small hole is provided at the bottom of the straight groove.

[0012] Furthermore, handles are provided on both the left and right sides of the support base.

[0013] Furthermore, the flatness of the upper surface of the support base is no greater than 0.003 mm.

[0014] Furthermore, the flatness of the horizontal reference correction band is no greater than 0.003 mm, and the perpendicularity of the line connecting the midpoint of the angular profile pin and the midpoint of the fixed mounting hole is no greater than 0.005 mm.

[0015] Furthermore, the upper outer diameter of the inner expansion screw is conical, which mates with the conical surface at the upper part of the elastic collet. When the inner expansion screw enters the through hole of the elastic collet, it causes the elastic collet to expand and deform.

[0016] Furthermore, the difference between the slope of the upper part of the cone of the internal expansion screw and the slope of the upper part of the cone surface of the elastic clamp is no greater than 1 degree.

[0017] Beneficial effects

[0018] This utility model provides a rotor hole system anti-deformation machining device with a reasonable design and strong practicality. By using expansion screws in conjunction with elastic chucks, the positioning and clamping methods are optimized for force distribution, successfully overcoming the unavoidable clamping point deformation problem that occurs during traditional three-jaw clamping. This greatly alleviates the contradiction between tool cutting stability and rotor clamping force, ensuring uniform cutting of each plunger hole during machining and providing a good foundation for consistent dimensional accuracy of the hole system. Furthermore, by using angular profile pins instead of probes to measure the angle of each part individually, the overall part machining time is greatly shortened while fully meeting the preset angular accuracy, thus improving machining efficiency. This provides a good design guidance scheme for the precision machining of similar rotor hole systems. Attached Figure Description

[0019] Figure 1 A three-dimensional diagram of a rotor bore system anti-deformation machining device that does not require correction;

[0020] Figure 2 A schematic diagram of a rotor bore system anti-deformation machining device without correction;

[0021] Figure 3 A 3D diagram of the flexible clamp;

[0022] Figure 4 This is a cross-sectional view of the flexible clamp;

[0023] Figure 5 For the structural diagram of the part;

[0024] The components are: 1-support base, 2-angular guide pin, 3-internal expansion screw, 4-elastic chuck, 5-origin correction hole, 6-horizontal reference correction band, 7-fixed mounting hole, 8-fixed threaded hole, 9-straight groove, 10-small hole, and 11-handle. Detailed implementation method:

[0025] 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.

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and specific examples:

[0027] This utility model provides a rotor hole system anti-deformation machining device without correction, comprising: a support base 1, an angular profile pin 2, an internal expansion screw 3, an elastic chuck 4, an origin correction hole 5, a horizontal reference correction band 6, a fixed mounting hole 7, a fixed threaded hole 8, a straight groove 9, a small hole 10, and a handle 11. The upper surface of the support base 1 serves as the end face supporting the bottom of the part, and the angular profile pin 2 is fixedly installed thereon for angular reference positioning of the part without angular correction. The elastic chuck 4 is fixedly installed on the upper surface of the support base 1 for clamping the inner hole of the part after deformation. The origin correction hole 5 is opened at the center of the support base 1, serving as the initial manufacturing origin of the machining device and the initial correction origin for part machining. The horizontal reference correction band 6 is opened on the front surface of the support base 1, serving as the initial angular manufacturing reference of the machining device and the correction of the horizontal reference when the machining device is clamped. The upper surface of the support base 1 has a fixed mounting hole 7 that is interference-fitted with the lower outer diameter of the elastic chuck 4 for fixed mounting of the elastic chuck 4. A fixed threaded hole 8 is formed inside the fixed mounting hole 7. The upper outer diameter of the internal expansion screw 3 is tapered, used for expansion when it abuts against the elastic chuck 4. The lower part of the expansion screw 3 is screwed into the fixed threaded hole 8. Multiple evenly spaced straight grooves 9 are formed on the outer diameter of the elastic chuck 4, so that the inner hole deforms evenly after expansion, thereby reliably clamping the inner hole of the part. A small hole 10 is formed at the bottom of the straight groove 9, which is used to relieve the expansion deformation stress of the elastic chuck 4 during repeated use, improve the service life of the elastic chuck 4, and prevent fatigue fracture. The device also includes a handle 11 for easy assembly and disassembly of the overall machining device.

[0028] Furthermore, the internal expansion screw 3 first passes through the through hole in the upper part of the elastic collet 4 and then screws into the fixed threaded hole 8.

[0029] Furthermore, the flatness of the upper end surface of the support base 1 is no greater than 0.003mm, which is used for the contact of the bottom end surface of the part, thereby ensuring the verticality reference accuracy.

[0030] Furthermore, the flatness of the horizontal reference correction band 6 is no greater than 0.003 mm, and the perpendicularity of the line connecting the midpoint of the angular profile pin 2 and the midpoint of the fixed mounting hole 7 is no greater than 0.005 mm, in order to ensure the accuracy of the part without angular correction.

[0031] Furthermore, the slope of the outer diameter of the upper part of the inner expansion screw 3 is not greater than 1 degree from the slope of the upper part of the elastic chuck 4, so as to ensure more reliable clamping after the elastic chuck 4 undergoes uniform deformation under force.

[0032] Please see Figure 1 , Figure 2 , Figure 3The anti-deformation machining device for rotor hole systems proposed in this utility model is rationally designed and highly practical. By using expansion screws in conjunction with elastic chucks, the positioning and clamping methods are optimized, successfully overcoming the unavoidable deformation problem at the clamping point during traditional three-jaw clamping. This greatly alleviates the contradiction between tool cutting stability and rotor clamping force, ensuring uniform cutting of each plunger hole during machining and providing a good foundation for consistent dimensional accuracy of the hole system. Furthermore, by using angular profile pins instead of probes to measure the angle of each part individually, the overall part machining time is greatly shortened while fully meeting the preset angular accuracy, thus improving machining efficiency. This provides a good design guide for the precision machining of similar rotor hole systems.

[0033] Please see Figure 2 , Figure 3 , Figure 4 , Figure 5 The usage process of this utility model is as follows:

[0034] 1. First, place the processing device on the workbench and use a magnetic gauge holder to attach the lever gauge to the spindle of the equipment. Then, move the spindle to correct the runout of the horizontal reference band 6 to within 0.01mm. Then, fix the processing device.

[0035] 2. Remove the internal expansion screw 3, insert the inner hole of the part into the elastic collet 4, and insert the angular contour pin 2 into the horseshoe groove at the root of the part.

[0036] 3. Apply downward pressure to the upper end of the part so that the bottom end face of the part abuts against the upper surface of the support base 1. Then, the inner expansion screw 3 passes through the inner hole of the part center and is threaded into the fixed threaded hole 8. Tighten the inner expansion screw 3 with a torque wrench. The elastic chuck 4 expands and deforms, the gap of the straight groove 9 increases, and uniform deformation occurs, thereby completing the fixing and clamping of the part. Then, the processing of the plunger hole system of the part is completed.

[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 rotor bore system anti-deformation machining device without correction, characterized in that, The support base (1) is included. The upper surface of the support base (1) serves as the end face of the bottom of the support part and is fixedly installed with an angular contour pin (2). Several elastic clamps (4) that can deform are fixedly installed on the upper surface of the support base (1). The elastic clamps (4) cooperate with the inner hole of the center of the part. The center of the support base (1) is provided with an origin correction hole (5). The front surface of the support base (1) is provided with a horizontal reference correction band (6).

2. The rotor hole system anti-deformation machining device without correction according to claim 1, characterized in that, The upper surface of the support base (1) is provided with a fixing mounting hole (7) that is interference-fitted with the lower outer diameter of the elastic chuck (4) for fixing the elastic chuck (4). A fixing threaded hole (8) is provided at the lower part of the fixing mounting hole (7).

3. The rotor hole system anti-deformation machining device without correction according to claim 2, characterized in that, The device also includes an internal expansion screw (3), the lower end of which passes through the through hole of the elastic collet (4) and is screwed into the fixed threaded hole (8).

4. The rotor hole system anti-deformation machining device without correction according to claim 3, characterized in that, The elastic chuck (4) has multiple evenly spaced straight grooves (9) on its outer diameter.

5. The rotor hole system anti-deformation machining device without correction according to claim 4, characterized in that, The bottom of the straight groove (9) is provided with a small hole (10).

6. The rotor bore system anti-deformation machining device without correction according to claim 1, characterized in that, Handles (11) are provided on both the left and right sides of the support base (1).

7. The rotor hole system anti-deformation machining device without correction according to claim 1, characterized in that, The flatness of the upper surface of the support base (1) is no greater than 0.003 mm.

8. The rotor hole system anti-deformation machining device without correction according to claim 1, characterized in that, The flatness of the horizontal reference correction band (6) is no greater than 0.003 mm, and the perpendicularity of the line connecting the midpoint of the angular profile pin (2) and the midpoint of the fixed mounting hole (7) is no greater than 0.005 mm.

9. The rotor hole system anti-deformation machining device without correction according to claim 3, characterized in that, The upper outer diameter of the inner expansion screw (3) is a cone, which cooperates with the upper conical surface of the elastic collet (4). When the inner expansion screw (3) enters the through hole of the elastic collet (4), the elastic collet (4) expands and deforms.

10. The rotor bore system anti-deformation machining device without correction according to claim 9, characterized in that, The difference between the slope of the upper cone of the internal expansion screw (3) and the slope of the upper cone of the elastic collet (4) is no greater than 1 degree.

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