A bearing bush machining process

Abstract

The application belongs to the technical field of bearing processing, and particularly relates to a bearing bush processing technology suitable for a diaphragm pump connecting rod bearing, which comprises the following steps: step one, when the bearing bush is processed, leaving a processing allowance for the inner diameter and the outer diameter of the whole bush; step two, cutting the whole bush into an upper half bush and a lower half bush along the diameter; step three, bonding the upper half bush and the lower half bush into a whole; step four, grinding the inner diameter and the outer diameter of the bonded bush to the final size; and step five, separating the bonded bush into the upper half bush and the lower half bush and assembling the bush to a shaft. Through the bearing bush processing technology improvement, the diaphragm pump connecting rod bearing bush can be installed on the connecting rod shaft, and the interference amount requirement of the bush and the cylindrical bearing is ensured, so that the reliability requirement of the bearing is met.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of bearing processing, and particularly relates to a bearing bush processing technology suitable for a connecting rod bearing of a diaphragm pump. BACKGROUND

[0002] The bush of the bearing applied to the connecting rod part of the ore pulp diaphragm pump is composed of two half bushes, and the whole bush is usually processed first, and then the bush is cut into two half bushes by wire cutting. After cutting, the stress of the bush is released, and the half bushes are deformed. The inner diameter of the bush cannot be installed on the connecting rod, and the outer diameter of the bush is deformed and cannot guarantee the interference amount of the bush and the inner diameter of the bearing, so that the use requirement cannot be met, and the bearing fails prematurely. SUMMARY

[0003] In view of the defects in the prior art, the purpose of the application is to provide a bearing bush processing technology suitable for a connecting rod bearing of a diaphragm pump, so that the bearing bush can meet the installation and use requirements and meet the reliability requirements of the bearing.

[0004] To achieve the above-mentioned purpose, the technical scheme adopted by the application is as follows: a bearing bush processing technology, comprising the following steps:

[0005] Step 1: When the bearing bush is processed, the inner diameter and the outer diameter of the whole bush are left with a processing allowance;

[0006] Step 2: The whole bush is cut into an upper half bush and a lower half bush along the diameter;

[0007] Step 3: The upper half bush and the lower half bush are bonded together;

[0008] Step 4: The inner diameter and the outer diameter of the bonded bush are ground to the final size;

[0009] Step 5: The bonded bush is separated into an upper half bush and a lower half bush and assembled on a shaft.

[0010] Further, in step 1, the processing allowance is greater than the deformation amount of the bush after cutting.

[0011] Further, in step 1, the processing allowance is 1±0.2mm.

[0012] Further, in step 2, the whole bush is cut into an upper half bush and a lower half bush by wire cutting.

[0013] Further, in step 2, the cutting width of the whole bush during cutting is 1mm.

[0014] Further, in step 3, the upper half bush and the lower half bush are bonded together by a spacer, and the thickness of the spacer is consistent with the cutting width.

[0015] Further, the thickness of the pad is 1mm.

[0016] The beneficial effects of the present application are: through the bearing bush machining process improvement of the present application, the machining precision of the bush is ensured, the connecting rod bearing bush of the diaphragm pump can be installed on the connecting rod shaft, and the interference amount requirement of the bush and the cylindrical bearing is ensured, and the reliability requirement of the bearing is met. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a schematic view of the installation of the bush and the bearing and the connecting rod shaft;

[0018] Figures 2-4 is a schematic view of the bush;

[0019] In the figure: 1, cylindrical bearing, 2, upper half sleeve, 3, lower half sleeve, 4, connecting rod shaft, 5, oil nozzle, 6, boss. DETAILED DESCRIPTION

[0020] In order to make the structure and function of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application.

[0021] Referring to the drawings Figures 1-4 , the diaphragm pump connecting rod bearing bush machining process has the following specific features:

[0022] The bush is composed of the upper half sleeve 2 and the lower half sleeve 3, the inner diameter of the bush is installed on the connecting rod shaft 4, and the outer diameter of the bush is installed with the cylindrical bearing 1. The bush has the advantages of convenient installation, easy bearing disassembly, and easy bearing and diaphragm pump post-maintenance and replacement. The schematic view of the installation of the bush and the bearing and the connecting rod shaft is shown in the attached Figure 1 .

[0023] The machining process discards the machining of the bush to the final size, cuts the bush wire into two half sleeves, which will cause stress release and cause deformation of the bush, and even through grinding, it is difficult to ensure the interference amount requirement of the bush and the bearing. The process is changed to leave a machining allowance for the inner diameter and the outer diameter of the whole bush, according to the current experience, the deformation amount is 0.4mm, therefore, 1mm deformation allowance is reserved for the inner diameter and the outer diameter. The whole bush is cut into two parts of the upper half sleeve and the lower half sleeve by wire cutting, and the cutting width is 1mm. The two half sleeves are glued together by 1mm pads, and the inner diameter and the outer diameter of the bush are ground to the final size. When grinding, the whole bush is ground together using a three-jaw chuck, the two half sleeves are connected together by gluing and ground, and the bonding strength can meet the grinding requirement. The sleeve is separated from the pad. Through this process improvement, the diaphragm pump connecting rod bearing bush can be installed on the connecting rod shaft, and the interference amount requirement of the bush and the cylindrical bearing is ensured, and the reliability requirement of the bearing is met. Figures 2-4The middle bush is provided with oil hole oil groove, and the oil nozzle generally has two, which are on the end surface of the bush, and the last drilling oil nozzle, drilling oil hole, milling oil line groove, and the boss is firstly processed as a whole circle, and then as a positioning surface, and finally the unwanted part is milled off.

[0024] It should be noted that the part of the present application not described in detail is prior art.

[0025] The above is only the best embodiment of the present application. Obviously, the present application is not limited to the above embodiment, and there can be many variations. All variations that can be directly derived or inferred from the disclosure of the present application by those of ordinary skill in the art should be considered as falling within the scope of the present application.

Claims

1. A bearing bushing processing technology, characterized in that, Includes the following steps: Step 1: When machining the bearing bushing, allowances are made for the inner and outer diameters of the entire bushing; these allowances are greater than the deformation after the bushing is cut. Step 2: Cut the integral bushing into an upper half and a lower half along the diameter; the integral bushing is cut into an upper half and a lower half by wire cutting. Step 3: Glue the upper and lower halves together as one piece; glue the upper and lower halves together as one piece using a spacer block, the thickness of which should match the cutting width. Step 4: Grind the inner and outer diameters of the bonded bushing to the final dimensions; Step 5: Separate the bonded bushing into an upper half and a lower half, and assemble them onto the shaft.

2. The bearing bushing processing technology according to claim 1, characterized in that, When the bushing is cut into two halves, the deformation is 0.4 mm. For step 1, the machining allowance is 1 ± 0.2 mm.

3. The bearing bushing processing technology according to claim 1, characterized in that, In step 2, the cutting width during the overall bushing cutting is 1mm.

4. The bearing bushing processing technology according to claim 1, characterized in that, The thickness of the pad is 1 mm.

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