Split type box body machining method

Abstract

The invention relates to the field of machining technologies, in particular to a split type box body machining method which comprises the following steps that a box cover and a main box body are machined in a split mode, and a plurality of hole systems used for installing bearings are correspondingly formed in the box cover and the main box body; positioning flanges are arranged on the end surfaces of the hole systems of the box cover and the main box body and are fixed by bolt groups; the box cover is placed on the main box body, and the same positioning column is pressed into the positioning flange of the corresponding hole system, so that the corresponding hole system is corrected to be concentric; the box cover and the main box body are fixed through a bolt group; pin holes are formed in the box cover and the main box body, and pin columns are driven into the pin holes; the machining tool clamp has the advantages that by designing and improving the machining tool clamp, large parts which are not prone to box closing machining can be produced in batches through the tool clamp which is simple in structure and convenient to position, the concentricity of a plurality of hole systems is guaranteed, and the machining efficiency is rapidly and effectively improved.

Description

Technical Field

[0001] The invention relates to the field of mechanical processing technology, and in particular to a method for processing a split box. Background Art

[0002] In mechanical processing, box processing is a relatively common mechanical processing project. It is usually positioned and clamped with equal height blocks, and then processed with face milling cutters, boring milling cutters, rotary heads and other tools. When processing box parts, generally the large surface is processed first, and then the hole system is used for positioning.

[0003] Large-sized split boxes usually have multiple hole systems. During processing, it is particularly important to ensure the concentricity of the hole system and the precise alignment and connection stability between components, because any slight position deviation may lead to problems such as final assembly failure or unstable operation.

[0004] At present, in order to improve the processing efficiency and precision, people mainly consider ordering longer tool bars and larger machine tools, but rarely make improvements in processing fixtures and methods.

[0005] Based on this, this case is brought forward. Summary of the invention

[0006] The purpose of the present invention is to provide a method for processing a split box body to improve processing efficiency and processing accuracy.

[0007] In order to achieve the above object, the technical solution of the present invention is as follows:

[0008] A method for processing a split box body comprises the following steps:

[0009] S10. Split processing box cover and main box body, the box cover and the main box body are provided with a number of holes for mounting bearings, a bolt hole provided on the end surface of the hole system and a bolt hole for fixing the box cover and the main box body;

[0010] S20. Install positioning flanges at the end faces of each hole system of the box cover and the main box body, the positioning flange includes an insert ring inserted into the hole system and a pressure ring pressed on the end face of the hole system, the pressure ring is provided with a through hole corresponding to the bolt hole 1, the bolt group passes through the through hole and the bolt hole 1, and the positioning flange is fixed to the hole system;

[0011] S30. Place the box cover on the main box body, and press the same positioning column into the positioning flange of the corresponding hole system so that the corresponding hole system is corrected concentrically;

[0012] S40. The box cover and the main box body are fixed by bolt group and bolt hole 2;

[0013] S50. Open pin holes on the box cover and the main box body and drive in pins.

[0014] Furthermore, the insert ring of the positioning flange and the hole system are connected by interference fit.

[0015] Furthermore, the positioning column and the insert ring of the positioning flange are connected by interference fit.

[0016] Furthermore, a spiral groove is provided on the inner wall of the insert ring of the positioning flange.

[0017] Furthermore, the positioning flanges and positioning columns in the corresponding hole system form a group of centering units. In the same group of centering units, one end of the positioning column protrudes from the positioning flange located at the box cover, and the protruding part forms a limiting ring with an outer diameter larger than the inner diameter of the positioning flange.

[0018] Furthermore, a lifting hole is provided on the end surface of the positioning column located at the box cover end.

[0019] Furthermore, in the corresponding hole systems, the inner diameters of the positioning flanges therein are the same.

[0020] The advantages of the present invention are that by designing and improving the processing fixture, large parts that are difficult to be processed in a box can be mass-produced using a fixture with a simple structure and convenient positioning, thereby ensuring the concentricity of multiple hole systems and quickly and effectively improving the processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the split box to be processed in the embodiment;

[0022] Figure 2 for Figure 1 A top view schematic diagram of

[0023] Figure 3 for Figure 2 AA cross-sectional view in FIG.

[0024] Figure 4 It is a schematic diagram of the three-dimensional structure of the split box after the tooling is assembled in the embodiment;

[0025] Figure 5 It is a cross-sectional schematic diagram of the split box body after the tooling is assembled in the embodiment;

[0026] Figure 6 A schematic diagram of the three-dimensional structure of the positioning flange in the embodiment;

[0027] Description of symbols

[0028] 1. Main box body; 2. Box cover; 3. Positioning flange 1; 301. Press ring; 302. Insert ring; 303. Spiral groove; 304. Through hole; 4. Positioning flange 2; 5. Positioning flange 3; 6. Positioning flange 4; 7. Positioning column 1; 701. Limiting ring; 702. Lifting hole; 8. Positioning column 2; 9. Pin column; 10. Bolt group 1; 11. Bolt group 2; 12. Hole system A1; 13. Hole system B1; 14. Hole system A2; 15. Hole system B2; 16. Bolt hole 1; 17. Bolt hole 2; 18. Pin hole. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below in conjunction with the embodiments. It should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" herein are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention.

[0030] like Figures 1 to 3 As shown, the split housing to be processed includes a housing cover 2 and a main housing 1, and two sets of holes for mounting bearings, a bolt hole 16 arranged on the end surface of the hole system, and a bolt hole 2 17 for fixing the housing cover 2 and the main housing 1 are correspondingly provided on the housing cover 2 and the main housing 1. Figure 3 As shown, one set of hole systems includes hole system A1 provided at the box cover 2 and hole system A2 provided at the main box body 1, and the other set of hole systems includes hole system B1 provided at the box cover 2 and hole system B2 provided at the main box body 1. In practical applications, the hole systems A1, A2, B1, and B2 all need to be fixed with bearings, and the hole systems A1 and A2 are used to install a set of shaft systems through bearings, and the hole systems B1 and B2 are used to install a set of shaft systems through bearings.

[0031] When processing large-sized split boxes, installation and positioning are difficult, especially the concentricity of hole system A1 and hole system A2, hole system B1 and hole system B2 is difficult to ensure, and the assembly efficiency is low.

[0032] This embodiment provides a method for processing a split box, which includes the following steps.

[0033] S10. The box cover 2 and the main box body 1 are processed separately, and two sets of hole systems (A1 and A2, B1 and B2) for installing bearings, a bolt hole 16 set on the end surface of the hole system, and a bolt hole 17 for fixing the box cover 2 and the main box body 1 are opened on the box cover 2 and the main box body 1 respectively.

[0034] S20. Install positioning flange 13 on hole system A1, install positioning flange 24 on hole system A2, install positioning flange 35 on hole system B1, and install positioning flange 46 on hole system B2; except for the size, the structural features of positioning flange 13 to positioning flange 46 are basically the same, so positioning flange 13 is taken as an example for explanation. Figure 5 and Figure 6 As shown, the positioning flange 3 includes an insert ring 302 inserted into the hole system A1 and a pressure ring 301 pressed on the end face of the hole system A1, and a through hole 304 corresponding to the bolt hole 16 is arranged on the pressure ring 301. The bolt group 10 passes through the through hole 304 and the bolt hole 16 to fix the positioning flange to the hole system A1. At the same time, the bolt group 10 presses the pressure ring 301 tightly against the end face of the hole system A1, providing a basis for ensuring the concentricity of the same group of holes in the subsequent period. Preferably, the insert ring 302 and the hole system A1 are connected by interference fit, further providing a basis for ensuring the concentricity of the same group of holes in the subsequent period.

[0035] The positioning flanges on the four hole systems (A1, A2, B1, B2) can act as bearings in actual applications to correct the concentricity of the same set of hole systems based on actual application scenarios. At the same time, they can increase the fitting length and improve the positioning accuracy.

[0036] S30. Insert positioning column 1 7 into hole system A1 and hole system A2, insert positioning column 2 8 into hole system B1 and hole system B2, and insert the positioning column from one hole system to another hole system so that the same group of hole systems are corrected to be concentric. Preferably, the positioning column and the insert ring of the positioning flange are connected by interference fit.

[0037] For the convenience of processing, the inner diameters of the positioning flanges in the same hole system are the same, that is, the inner diameters of the insert rings of hole system A1 and hole system A2 are the same, and the inner diameters of the insert rings of hole system B1 and hole system B2 are the same, which facilitates the processing of the positioning column. Figure 6 As shown, a spiral groove is provided on the inner wall of the insert ring of the locating flange. When the locating column is pressed in, lubricating oil can be added through the spiral groove to prevent the locating column from being squeezed and deformed due to burrs, thereby affecting the concentricity.

[0038] As a preference, Figure 5 As shown, taking the positioning column 17 as an example (the positioning column 17 and the positioning column 28 have basically the same structure except for the size), the upper end of the positioning column 7 protrudes from the positioning flange A1, and the protruding part forms a limiting ring 701 whose outer diameter is larger than the inner diameter of the positioning flange A1. The limiting ring 701 is used to limit the depth of the positioning column 7 pressed into the box body. At the same time, a lifting hole 702 is opened at the end face of the positioning column 7 located on the box cover 2, which can be removed by lifting to improve convenience.

[0039] S40. The box cover 2 and the main box body 1 are fixed by the second bolt group 11 and the second bolt hole 17.

[0040] S50. Figure 5 As shown, a pin hole 18 is opened on the box cover 2 and the main box body 1 and a pin 9 is driven in to ensure that the relative position between the box cover 2 and the main box body 1 is fixed and unchanged, and at the same time increase the connection strength between the box cover 2 and the main box body 1 to prevent loosening. The pin shaft 9 has a built-in thread for easy thread pulling and disassembly.

[0041] This method can quickly complete the processing of various groups of hole systems of large split boxes that are difficult to process through split positioning processing and box assembly positioning and alignment. It has the characteristics of simple structure and convenient positioning, and can quickly and effectively improve processing efficiency.

[0042] The above embodiments are only used to explain the concept of the present invention, rather than to limit the protection of the rights of the present invention. Any non-substantial changes to the present invention using this concept shall fall within the protection scope of the present invention.

Claims

1. A method for processing a split box, characterized in that: The following steps are involved: S10. Split processing box cover and main box body, the box cover and the main box body are provided with a number of holes for mounting bearings, a bolt hole provided on the end surface of the hole system and a bolt hole for fixing the box cover and the main box body; S20. Install positioning flanges at the end faces of each hole system of the box cover and the main box body, the positioning flange includes an insert ring inserted into the hole system and a pressure ring pressed on the end face of the hole system, the pressure ring is provided with a through hole corresponding to the bolt hole 1, the bolt group passes through the through hole and the bolt hole 1, and the positioning flange is fixed to the hole system; S30. Place the box cover on the main box body, and press the same positioning column into the positioning flange of the corresponding hole system so that the corresponding hole system is corrected concentrically; S40. The box cover and the main box body are fixed by bolt group and bolt hole 2; S50. Open pin holes on the box cover and the main box body and drive in pins.

2. A method for processing a split box as claimed in claim 1, characterized in that: The insert ring of the positioning flange is connected with the hole system by interference fit.

3. A method for processing a split box as claimed in claim 1, characterized in that: The positioning column is connected to the insert ring of the positioning flange by interference fit.

4. A method for processing a split box as claimed in claim 1, characterized in that: A spiral groove is provided on the inner wall of the insert ring of the positioning flange.

5. A method for processing a split box as claimed in claim 1, characterized in that: The positioning flanges and positioning columns in the corresponding hole system form a group of centering units. In the same group of centering units, one end of the positioning column protrudes from the positioning flange located at the box cover, and the protruding part forms a limiting ring with an outer diameter larger than the inner diameter of the positioning flange.

6. A method for processing a split box as claimed in claim 1, characterized in that: The end surface of the positioning column located at the box cover end is provided with a hoisting hole.

7. A method for processing a split box as claimed in claim 1, characterized in that: In the corresponding hole systems, the inner diameters of the positioning flanges therein are the same.

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