Drilling mould for flange connection hole at side of butterfly valve

A connection hole, butterfly valve side technology, applied in the field of drilling molds for flange connection holes on the butterfly valve side, can solve problems such as difficulty in ensuring the interchangeability of the flange connection holes on the butterfly valve side, inability to ensure accuracy, and difficulty in moving workpieces. Achieve the effect of eliminating the fitter marking process, saving production costs and ensuring interchangeability

Inactive Publication Date: 2011-01-12
天津津通瓦特阀门制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Very troublesome, labor-intensive and time-consuming
Especially for large-aperture butterfly valves, it is very difficult to move the workpiece when marking
At the same time, the accuracy of the position of each hole cannot be ensured when drilling, and it is difficult to ensure the interchangeability of the flange connection holes on the butterfly valve side

Method used

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  • Drilling mould for flange connection hole at side of butterfly valve
  • Drilling mould for flange connection hole at side of butterfly valve
  • Drilling mould for flange connection hole at side of butterfly valve

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Embodiment Construction

[0011] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings and preferred embodiments. As shown in the figure, a butterfly valve side flange connection hole drilling tool is mainly composed of an annular drilling tool body 1 and a drilling mold 2, and drills are evenly arranged on the annular surface of the drilling tool body. Die connecting hole 3, the said drilling die and the drilling die connecting hole have an interference fit or adopt a taper fit, and the outer circle of the drilling die is provided with a taper and cooperates with the taper of the drilling die connecting hole. The concentric circle on one side of the drilling tool body is provided with a stepped circular stop 4 matching the diameter of the inner hole of the butterfly valve. Another row of die connection holes is provided on the inner concentric circle of the die connection hole on the annular surface of the drilling tool body, wh...

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Abstract

The invention relates to a drilling mould for a flange connection hole at the side of a butterfly valve, mainly comprising a ring-shaped drilling mould body and a drilling jig, wherein the ring-shaped surface of the drilling mould body is evenly distributed with drilling jig connection holes in cooperative connection with the drilling jig; and the concentric circle at one side of the drilling mould body is provided with a step table round spigot matched with the inner hole diameter of the butterfly valve body. The invention brings the beneficial effects of saving the labor and time consuming benchwork lining process and completing the drilling via directly installing the mould, guaranteeing the correct position of each hole and ensuring the interchangeability of the flange connection hole at the side of the butterfly valve. A double-row drilling jig connection hole design is adopted to satisfy the drilling demand of two flange connection holes with different specifications at the side of the butterfly valve, enlarge the using range and save the manufacturing cost.

Description

technical field [0001] The invention belongs to butterfly valve processing tooling, in particular to a tool for drilling flange connection holes on the side of a butterfly valve. Background technique [0002] The traditional production process of flange connection holes on the side of the butterfly valve is as follows: for each flange connection hole on the side of the butterfly valve, the fitter marks the holes one by one on the plate, and then moves to the vertical drill to drill holes. It is very troublesome for the fitter to mark the line. First, put a wooden block into the center circle of the butterfly valve to find the center point. Draw the concentric circles of the connecting holes of the side flange with a drawing planner, and then divide them equally on the concentric circles to draw the positions of the connecting holes. Very troublesome, labor-intensive and time-consuming. Especially for large-aperture butterfly valves, it is very difficult to move the workpie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23B47/28B23Q3/06
Inventor 张春山徐治国张春领徐志安
Owner 天津津通瓦特阀门制造有限公司
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