Novel valve rod cylindrical grinding equipment and valve rod cylindrical grinding method
A technology of cylindrical grinding and valve stem, which is applied in the field of valve processing machinery, can solve the problems of medium running, leaking, leaking, dripping, leakage at the packing, high degree of danger, etc., to avoid processing danger, low cost, and improve surface finish Effect
Inactive Publication Date: 2016-06-22
ZIGONG HUAXI PUMP & VALVE MFR
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Problems solved by technology
[0003] Since the valve stem is machined on a lathe, the polished surface of the valve stem is polished with emery cloth, but this processing method cannot meet the design requirements of relatively high-precision surface finish.
During the opening and closing process of the valve, it is very easy to cause leakage at the packing, causing the medium to run, pop, leak, and drip.
When grinding and polishing the valve stem with emery cloth, the degree of danger is also high, which can easily cause work-related accidents
Method used
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[0014] Such as figure 1 As shown, the present invention utilizes the extrusion principle to improve the surface finish of the polished valve stem. Appropriate improvement is made to the existing old lathe. The lathe has a three-jaw chuck on the main shaft of the lathe, a movable thimble on the tailstock of the lathe, a large carriage 1 of the lathe, a middle carriage 2 of the lathe set on the large carriage 1 of the lathe, a lathe The middle carriage 2 has a small carriage of a lathe, and the small carriage of a lathe is screwed on the positioning bolt hole of the small carriage of a lathe, and a knife rest is arranged on the small carriage. First remove the tool table and small carriage on the carriage 2 of the lathe. Weld an angle iron frame 3 with a steel plate, drill a hole under the angle iron frame 3 based on the positioning bolt hole of the small carriage of the lathe, fix the angle iron frame 3 on the middle carriage 2 of the lathe with bolts, and install the angle ir...
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The invention provides novel valve rod cylindrical grinding equipment. The novel valve rod cylindrical grinding equipment comprises a lathe. The lathe is provided with a three-jaw chuck, an ejector pin, a large lathe carriage and a medium lathe carriage which is arranged on the large lathe carriage. The three-jaw chuck is arranged on a lathe spindle. The ejector pin is arranged on a tail seat of the lathe. The novel valve rod cylindrical grinding equipment is characterized in that an extrusion three-jaw chuck is fixed to the medium lathe carriage; the center height of the extrusion three-jaw chuck is identical to that of the lathe spindle; three clamping jaws of the extrusion three-jaw chuck are smooth jaws; the heads of the three clamping jaws are round; three deep groove ball bearings are installed on the heads of the three clamping jaws correspondingly. The invention further provides a valve rod cylindrical grinding method. According to the novel valve rod cylindrical grinding equipment and the valve rod cylindrical grinding method, through an extrusion principle, smoothness machining is conducted on the surface of a polish rod of a valve rod, the surface smoothness of the polish rod position of the valve rod after machining can be improved, and machining danger caused by manual operation is avoided. Through the novel valve rod cylindrical grinding equipment and the valve rod cylindrical grinding method, an old lathe can be modified, and the cost is low.
Description
technical field [0001] The invention belongs to a valve processing machine, and in particular relates to a device and a method for processing polished valve rods of valves. Background technique [0002] In the valve stem processing project of the existing valve, the surface finish of the polished stem part of the valve stem is relatively high, and the machining accuracy is required to reach 1.6 or 0.8. Generally, it is processed by lathe, and the surface is polished with emery cloth to improve the surface finish of the valve stem. [0003] Since the valve stem is processed by a lathe, the polished surface of the valve stem is ground and polished with emery cloth, but this processing method cannot meet the design requirements of relatively high-precision surface finish. During the opening and closing process of the valve, it is very easy to cause leakage at the packing, causing the medium to run, pop, leak, and drip. When grinding and polishing the valve stem with emery clo...
Claims
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Inventor 陈旭何超
Owner ZIGONG HUAXI PUMP & VALVE MFR