CN201783675U - Drill jig for processing weep holes on damping ring of water turbine generator - Google Patents

Abstract

The utility model relates to a drilling mold for processing the holes of the damping ring of a hydroelectric generator. The center of the drilling mold seat is provided with an arc-shaped inner chamber which matches with the semi-finished damping ring and is close to the inner circular arc of the semi-finished damping ring. The three inner arc positioning pins, the positioning plate located at one end of the drill base and the horizontal positioning screw along the symmetrical center line and tightening the outer arc of the semi-finished product of the damping ring. The formwork is fastened and installed on the top surface of the mold holder through the template positioning pin and the first bolt, and is matched with the damping ring semi-finished product installed in the arc-shaped inner cavity of the drill holder. The arc-arranged damping rod hole drill sleeves are inlaid in the middle of the template; the two ends of the template are provided with vertical positioning bolts for tightening the top damping ring semi-finished product; The utility model can replace the process of marking each hole first and then drilling, and has the advantages of ensuring the shape and position accuracy of each hole, saving time and labor, high work efficiency and low cost.

Description

A Drilling Template for Machining Drilling Hole of Damping Ring of Hydrogenerator

technical field

The utility model relates to a drilling mold processing mold, in particular to a drilling mold for processing a hydraulic generator damping ring row hole.

Background technique

Previously, to process the damping rod holes 16 arranged along a circular arc and the screw holes 15 for connecting both ends of the damping ring 14 of the hydro-generator as shown in Figure 3-4, it is generally used to mark the line first and then drill the holes; the process is complicated , The processing cycle is long, the labor intensity is high, and it is difficult to ensure the shape and position accuracy of each hole, and the deviation is large; resulting in misalignment of the connecting bolts at both ends and the damping rod.

Contents of the invention

The purpose of the utility model is to provide a drilling mold for processing the holes of the damping ring of the hydraulic generator, which can ensure the shape and position accuracy of each hole, and has simple process, short cycle and high work efficiency.

In order to solve the above-mentioned technical problems, the technical solution of the utility model is: a drilling mold for processing the holes of the damping ring of the hydraulic generator, including the drilling mold base and the damping ring of the screw holes to be processed and the damping rod holes arranged along the circular arc Semi-finished products; the center of the drill base is provided with an arc-shaped inner cavity that matches the shape of the damping ring semi-finished product and the top is open. The arc-shaped inner cavity is provided with 2-5 inner arcs that are close to the inner arc of the damping ring semi-finished product Inner arc positioning pin. One end of the jig base is provided with a positioning plate that is fastened and installed by the second bolt, and a horizontal positioning screw that tightens the outer arc of the semi-finished product of the top damping ring is provided in the center of the jig base along the symmetrical center line. The template is fastened and installed on the top surface of the mold holder through the template positioning pin and the first bolt, and is closely matched with the damping ring semi-finished product installed in the arc-shaped inner cavity of the drill holder. The screw hole drill sleeve is processed and arranged according to the design requirements of the damping ring. Inlaid at both ends of the template, the damping rod hole drill sleeves that are processed and arranged according to the design requirements of the damping ring and arranged along an arc are embedded in the middle of the template. The two ends of the formwork are located between the screw hole drill bushing and the damping rod hole drill bushing, and are provided with vertical positioning bolts for tightening the top damping ring semi-finished product. There are two locating pins transitionally matched with the drill sleeve of the damping rod hole; the arc-shaped inner cavity is provided with three inner arc locating pins which are close to the inner arc of the damping ring semi-finished product.

The beneficial effect of the utility model is: adopting the utility model, instead of the traditional process of marking each hole arranged along the arc and then drilling, it can ensure the shape and position accuracy of each hole, and the process is simple, time-saving and labor-saving , high efficiency and low cost advantages.

Description of drawings

Fig. 1 is a structural representation of the utility model.

FIG. 2 is a top view of FIG. 1 .

Fig. 3 is a structural schematic diagram of a damping ring of a hydroelectric generator.

Fig. 4 is a cross-sectional view along line A-A of Fig. 3 .

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

The embodiment is shown in the figure: a drilling template for processing the row of holes of the damping ring of a hydroelectric generator, which is used for high-efficiency drilling and reaming of the screw holes 15 and damping rod holes 16 arranged along a circular arc on the damping ring 14 . The center of the drill base 1 is provided with an arc-shaped inner cavity that matches the shape of the damping ring semi-finished product 10 and the top is open. The arc-shaped inner cavity is provided with three inner arcs that are close to the inner arcs of the damping ring semi-finished product 10 Locating pin 7. One end of the arc-shaped inner cavity of the drilling mold base 1 is provided with a positioning plate 9 tightly fixed and installed by the second bolt 8, and the center of the drilling mold base 1 is provided with a tight top damping ring semi-finished product 10 outer arc along the center line of symmetry. Horizontal set screw 2. The template 3 is fastened and installed on the top surface of the drill base 1 through three template positioning pins 13 and four first bolts 4, and is in clearance fit with the damping ring semi-finished product 10 installed in the arc-shaped inner cavity of the drill base 1. According to the damping ring Screw hole drill bushings 11 that are required to be processed and arranged by the design are embedded in both ends of the template 3, and damping rod hole drill bushes 12 that are processed and arranged according to the design requirements of the damping ring and arranged along an arc are embedded in the middle of the template 3. At both ends of the formwork 3, between the screw hole drill sleeve 11 and the damping rod hole drill sleeve 12, vertical positioning bolts 6 for tightening the top damping ring semi-finished product 10 are arranged. There are two locating pins 5 that transitionally cooperate with the damping rod hole drill bushing 12 .

The damping ring semi-finished product 10 is inserted into the arc-shaped inner cavity of the drill base 1 from the open side and is close to the positioning plate 9 and the three inner circular arc positioning pins 7, and the horizontal positioning screw 2 and the vertical positioning bolt 6 are used respectively in the horizontal plane and vertical positioning. The top is tight. When drilling, first process the damping rod hole 16 at one end and insert it into the first positioning pin 5 for positioning, then process the damping rod hole 16 at the other end and insert it into the second positioning pin 5 for positioning, and then perform other damping Machining of rod hole 16 and screw hole 15.

Claims (2)

1. the drill jig of a process water turbine generator damping ring round, the screw hole to be processed that comprises jig seat and arrange along circular arc and the damping ring semi-finished product in damper rod hole, it is characterized in that: the central authorities of described jig seat (1) are provided with the arc inner chamber of the open-top that matches with the profile of damping ring semi-finished product (10), described arc inner chamber be provided with the interior circular arc of damping ring semi-finished product (10) near 2-5 in circular arc alignment pin (7); One end of described jig seat (1) is provided with the location-plate of installing by second bolt (8) tightening (9), is provided with the horizontal location screw (2) that presses closer damping ring semi-finished product (10) external arc along symmetrical center line in the central authorities of described jig seat (1); Template (3) by the fastening end face that is installed in jig seat (1) of Template Location pin (13) and first bolt (4) and with damping ring semi-finished product (10) matched in clearance that is contained in jig seat (1) arc inner chamber, be embedded in the two ends of template (3) according to damping ring designing requirement processing and the screw hole drill bushing (11) arranged, according to damping ring designing requirement processing with arrange and be embedded in the middle part of template (3) along the damper rod hole drill cover (12) that circular arc is arranged; The two ends of template (3) are positioned at and are provided with the vertical bolt (6) that presses closer damping ring semi-finished product (10) between screw hole drill bushing (11) and the damper rod hole drill cover (12); Be provided with two fastening screws (5) with described damper rod hole drill cover (12) interference fits.

2. the drill jig of a kind of process water turbine generator damping ring round according to claim 1 is characterized in that: described arc inner chamber be provided with the interior circular arc of damping ring semi-finished product (10) near three interior circular arc alignment pins (7).

Images