A processing device of a small-structure sphere reference chuck

Abstract

The utility model belongs to mechanical manufacturing technical field, concretely speaking, relate to a kind of processing device of small structure sphere reference chuck, including support base, the end surface of the upper surface of support base as the bottom of supporting part, and horizontal reference correction band is provided on outer diameter;The upper surface center of support base is fixedly installed with sphere positioning block, annular hole system is set along the circumference of sphere positioning block, the annular hole system includes one angular orientation hole and several avoiding holes, the upper surface of sphere positioning block is fixedly installed with fixed screw;The processing device can overcome the machining problem brought by part structure small and with center sphere as reference, ensure the precision requirement of each process processing size.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical manufacturing technology, and specifically relates to a processing device for a small-structure spherical reference chuck. Background Technology

[0002] With the rapid development of mechanical technology, the flow performance requirements of hydraulic piston pumps are becoming increasingly demanding. The chuck, as a crucial component, plays a key role in meeting these new flow performance parameter requirements, whether it's helping the piston to complete the oil suction and discharge processes more efficiently or improving the working efficiency and reliability of the hydraulic pump through optimized design. Currently, the newly designed chuck has a spherical structure at its center, which serves as the design reference. Furthermore, the small size of the parts makes it difficult to correct the angular orientation of the sphere and the annular bore system relative to the central sphere using traditional machining methods. This results in compromised machining accuracy of the chuck's annular bore system and outer circle, leading to low machining efficiency.

[0003] In summary, it is necessary to design a reference transformation method that can overcome the clamping and correction difficulties caused by small structural parts, and can ensure high-precision reference transformation of the chuck's central spherical structural reference. This method can simplify the machining process while ensuring correction accuracy, thereby improving machining efficiency while guaranteeing machining quality. Utility Model Content

[0004] The purpose of this utility model is:

[0005] This invention provides a machining device that can effectively process small-structure spherical reference chucks. This machining device can overcome the machining difficulties caused by the small size of the parts and the use of a central sphere as a reference, and ensure the accuracy requirements of each process dimension.

[0006] Technical solution:

[0007] A machining device for a small-structure spherical reference chuck is used to fix a part, the part being a chuck machining component. The machining device includes: a support base; the upper surface of the support base serves as the end face supporting the bottom of the part, and a horizontal reference correction band is provided on its outer diameter; a spherical positioning block is fixedly installed at the center of the upper surface of the support base, and an annular hole system is provided along the circumference of the spherical positioning block, the annular hole system including a angular positioning hole and several clearance holes; and a fixing screw is fixedly installed on the upper surface of the spherical positioning block.

[0008] Furthermore, it also includes an angular positioning pin, which passes through the hole with the smallest matching gap in the annular hole system of the part, and then passes through the angular positioning hole on the upper surface of the support base, for angular positioning before the annular hole system of the part is machined.

[0009] Furthermore, the external thread of the fixing screw is screwed into the central thread of the fixing nut for reliable clamping of the part.

[0010] Furthermore, it also includes a washer, which is set on the fixing screw. The parts are clamped by fixing the nut and the washer. The washer is made of copper.

[0011] Furthermore, the flatness of the horizontal reference correction band is no greater than 0.003 mm.

[0012] Furthermore, the clearance between the angular positioning hole and the angular positioning pin is controlled within 0.01mm to 0.03mm.

[0013] Furthermore, the support base, spherical positioning block, and fixing screw are machined in a single positioning turning process.

[0014] Furthermore, the difference between the clearance hole on the upper surface of the support base and the final machining size of the annular hole system of the part is not less than 0.3mm.

[0015] Furthermore, the outer diameter of the support base is smaller than the final machining diameter of the outer circle of the part.

[0016] Beneficial effects

[0017] This utility model provides a machining device for a small-structure spherical reference chuck. Its design is reasonable and highly practical, capable of simultaneously milling and grinding outer diameters and annular hole systems for precision machining. By using a spherical positioning block to contour-guide the inner sphere of the part, it successfully solves the problem of difficulty in calibrating the part's center reference, ensuring the coaxiality of the part's outer diameter and center reference. Furthermore, the small-clearance, small-axis angular positioning method ensures the positional accuracy of the annular hole system. In the process of machining the outer diameter and annular hole system in a single positioning operation, it simplifies the calibration process and improves machining efficiency. The effective clamping method avoids damage to the part's end face and ensures secure and reliable clamping, providing a good foundation for subsequent stable cutting. While ensuring the quality of batch-produced parts, it also provides an effective design and manufacturing guide for the production of similar reference chucks. Attached Figure Description

[0018] Figure 1 A three-dimensional diagram of a machining device for a small-structure spherical reference chuck;

[0019] Figure 2 A schematic diagram of the use of a machining device for a small-structure spherical reference chuck;

[0020] Among them, 1-support base, 2-horizontal reference correction band, 3-spherical positioning block, 4-fixing screw, 5-angular positioning hole, 6-avoidance hole, 7-waist, 8-fixing nut, 9-angular positioning pin. Detailed implementation method:

[0021] 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.

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

[0023] This utility model provides a machining device for a small-structure spherical reference chuck. The machining device includes: a support base 1, a horizontal reference correction band 2, a spherical positioning block 3, a fixing screw 4, an angular positioning hole 5, a clearance hole 6, a washer 7, a fixing nut 8, and an angular positioning pin 9. The upper surface of the support base 1 serves as the end face supporting the bottom of the part, and a horizontal reference correction band 2 is provided on its outer diameter for the initial manufacturing reference of the machining device and for the correction of the horizontal reference each time the machining device is clamped. A spherical positioning block 3 is fixedly installed at the center of the upper surface of the support base 1 for the precise positioning of the spherical center of the chuck. An annular hole system is provided around the spherical positioning block 3. The annular hole system includes an angular positioning hole 5 and several clearance holes 6. An angular positioning hole 5 is provided on the upper surface of the support base 1 for the precise angular positioning of the annular hole system and tool clearance. Multiple clearance holes 6 are evenly arranged around the spherical positioning block 3 on the upper surface of the support base 1 for tool clearance during the machining of the annular hole system of the part. The upper surface of the spherical positioning block 3 is fixedly installed with fixing screws 4 for fixing and clamping the parts.

[0024] Furthermore, the angular positioning pin 9 passes through the hole with the smallest matching gap in the annular hole system of the part, and then passes through the angular positioning hole 5, for angular positioning before the annular hole system of the part is machined.

[0025] Furthermore, the thread of the fixing screw 4 is screwed into the center thread of the fixing nut 8 for reliable clamping of the part.

[0026] Furthermore, the device also includes a washer 7, which is disposed on the fixing screw 4. The parts are then pressed together by fixing the nut 8 and the washer 7. The washer 7 is made of copper and is used to prevent the end face of the parts from being damaged when they are clamped.

[0027] Furthermore, the flatness of the horizontal reference correction band 2 is no greater than 0.003 mm, which is used to ensure the horizontal reference of the processing device and the horizontal correction reference when the processing device is clamped.

[0028] Furthermore, the colored area of ​​the sphere positioning block 3 on the central sphere of the part is not less than 80%, which is used for the precise positioning of the central sphere reference of the part.

[0029] Furthermore, the gap between the angular positioning hole 5 and the angular positioning pin 9 is controlled within 0.01mm to 0.03mm, which is used for angular positioning of the annular hole of the part.

[0030] Furthermore, the support base 1, the spherical positioning block 3, and the fixing screw 4 are machined in a single positioning turning process to ensure the machining accuracy of the coaxiality of the machining device.

[0031] Furthermore, the difference between the clearance hole 6 and the final machining size of the annular hole system of the part is not less than 0.3mm, which is used for the safe clearance of the tool when machining the annular hole system.

[0032] Furthermore, the outer diameter of the support base 1 is smaller than the final machining diameter of the outer circle of the part, in order to ensure the safe avoidance of the cutting tool during the machining of the outer circle of the part.

[0033] This invention proposes a machining device for a small-structure spherical reference chuck. The device is rationally designed and highly practical, capable of simultaneously milling and grinding outer diameters and annular hole systems for precision machining. By using a spherical positioning block to contour-guide the inner sphere of the part, it successfully solves the problem of difficulty in calibrating the part's center reference, ensuring the coaxiality of the part's outer diameter and center reference. Furthermore, the small-clearance, small-axis angular positioning method ensures the positional accuracy of the annular hole system. In the process of machining the outer diameter and annular hole system in a single positioning operation, the calibration process is simplified while improving machining efficiency. The effective clamping method avoids damage to the part's end face and ensures secure and reliable clamping, providing a good foundation for subsequent stable cutting. While ensuring the quality of batch-produced parts, this invention also provides an effective design and manufacturing guide for the production of similar reference chucks.

[0034] Please see Figure 2 The usage process of this utility model is as follows:

[0035] 1. First, use a three-jaw clamp to clamp the outer diameter of the support base 1. Then, use a magnetic dial indicator holder to attach the lever dial indicator to the main spindle of the equipment. Next, move the main spindle to correct the horizontal reference belt. The runout should be less than 0.01mm, thus completing the horizontal correction of the horizontal reference correction belt 2.

[0036] 2. Pass the fixing screw 4 through the hole of the center sphere of the part, and make the center sphere surface fully contact the sphere positioning block 3. The colored area of ​​the sphere positioning block 3 on the center sphere of the part is not less than 80%, thus completing the precise positioning of the center sphere reference.

[0037] 3. After covering with the gasket 7, use the angular positioning pin 9 to pass through the smaller gap in the annular hole system of the part, and then through the angular positioning hole 5 to complete the angular precision positioning.

[0038] 4. Tighten the fixing nut 8 with the fixing screw 4 to fix the part. After removing the angular locating pin 9, complete the machining of the annular hole system and outer circle of the part.

[0039] 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 a small-structure spherical reference chuck, characterized in that, The processing device includes: a support base (1); the upper surface of the support base (1) serves as the end face of the bottom of the support part, and a horizontal reference correction band (2) is provided on the outer diameter; a spherical positioning block (3) is fixedly installed at the center of the upper surface of the support base (1), and an annular hole system is provided along the circumference of the spherical positioning block (3), the annular hole system includes a angular positioning hole (5) and several clearance holes (6), and a fixing screw (4) is fixedly installed on the upper surface of the spherical positioning block (3).

2. The processing apparatus according to claim 1, characterized in that, It also includes an angular positioning pin (9), which passes through the hole with the smallest matching gap in the annular hole system of the part, and then passes through the angular positioning hole (5) on the upper surface of the support base (1) for angular positioning before the annular hole system of the part is processed.

3. The processing apparatus according to claim 1, characterized in that, The external thread of the fixing screw (4) is screwed into the center thread of the fixing nut (8) for reliable clamping of the parts.

4. The processing apparatus according to claim 3, characterized in that, It also includes a gasket (7), which is set on the fixing screw (4). The parts are pressed together by fixing the nut (8) and the gasket (7). The gasket (7) is made of copper.

5. The processing apparatus according to claim 1, characterized in that, The flatness of the horizontal reference correction band (2) is no greater than 0.003 mm.

6. The processing apparatus according to claim 2, characterized in that, The clearance between the angular positioning hole (5) and the angular positioning pin (9) is controlled within 0.01mm to 0.03mm.

7. The processing apparatus according to claim 1, characterized in that, The support base (1), spherical positioning block (3), and fixing screw (4) are machined by a single positioning turning process.

8. The processing apparatus according to claim 1, characterized in that, The difference between the clearance hole (6) on the upper surface of the support base (1) and the final machining size of the annular hole system of the part is not less than 0.3mm.

9. The processing apparatus according to claim 1, characterized in that, The outer diameter of the support base (1) is smaller than the machining diameter of the final outer circle of the part.

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