CN206747895U - Large-scale core main pump shield electric machine balance ring processing tool device - Google Patents

Abstract

A kind of large-scale core main pump shield electric machine balance ring processing tool device, multiple riser (12) both ends are inserted into upper support board (11) with forming stake body on lower support plate (13) respectively；Riser (12) is six, and each riser (12) uses vertical, and riser (12) is uniformly distributed along upper support board (11), lower support plate (13) outer.The utility model improves the quality of finished surface；Using special fitting device, the support to balance ring " convex-concave " face is realized, workpiece " has been lifted away from " workbench, reduce the quantity of fixture component, the possibility that cutter is interfered with frock tool and workbench in process is reduced, operating efficiency is improved, ensure that product quality.

Description

Large-scale core main pump shield electric machine balance ring processing tool device

Technical field：It the utility model is related to a kind of large-scale core main pump shield electric machine balance ring processing technology and its frock dress Put.

Background technology：With the development of nuclear power technology, for the requirement more and more higher of core main pump shield electric machine startability, Hence for motor thrust bearing performance requirement also with regard to more and more higher.Balance ring is to connect multiple bearing shells of thrust bearing Come the endless member formed, never there is shield electric machine to use such a structure in the past, its dimensional accuracy to processing, form and position tolerance Requirement with roughness is all very high, and yielding in process.For this emerging parts of bearings, it is necessary to design one kind Processing technology and fitting device, realize its process requirements；It is connected between its each bearing shell using " V-shaped groove " structure, connection place Thinner thickness, need to play a part of spring-like in the balance ring course of work, therefore it is required that its suface processing quality is good, Do not allow stress raisers point, that is, connect the presence of knife platform, this results in traditional processing side for such " V-shaped groove " structure Case --- slotting cutter+rose cutter is unavailable；The face of cylinder on balance ring bearing shell, play a part of self-adjusting support, for table Face quality requirement is very high, the full rose cutter processing of generally use, but the diameter for being limited to full rose cutter is not easy too greatly, to cause to want Obtaining higher cutting speed just needs greatly to improve the speed of mainshaft, and causing process lathe, over-burden, processes situation Also it is not bery stable.

The content of the invention：The processing that it is balance ring on Five-axis NC Machining Center that the purpose of this utility model, which is, provides a kind of precision Good its fitting device of large-scale core main pump shield electric machine balance ring.The utility model adopts the following technical scheme that：It is a kind of large-scale Core main pump shield electric machine balance ring Milling Machining fitting device, multiple both ends of riser 12 are inserted into upper support board 11 and bottom respectively Stake body is formed in supporting plate 13；Riser 12 is six, and each riser 12 uses vertical, and riser 12 is along upper support board 11st, the outer of lower support plate 13 is uniformly distributed；Riser 12 is connected with upper support board 11 and lower support plate 13 by welding manner It is connected together, stable connection, ensure that the strength demand of whole fitting device；Upper support board 11 has identical with balance ring 16 Convex-concave structure, and upper support board 11 processes the male and fomale(M＆F) formed behind the first face with balance ring 16 and coincide, it is good so as to provide Support.

Two surfaces are respectively used to process the upper and lower surfaces of balance ring above and below the present apparatus, when in use, pass through key and spiral shell Present apparatus one side is fixed on platen by bolt, balance ring is fixed on present apparatus another side with bolt, in balance ring Leave the craft thread hole being loaded, it is only necessary to which balance ring is fixed in the present apparatus by bolt can, is reduced needed for connection Number of components；, will be flat by way of " interval bridging " using bolt and pressing plate when processing balance ring technique reserved part Weighing apparatus ring is fixed in the present apparatus, completes the processing of balance ring technique reserved part.

The beneficial effects of the utility model are：

1) by the use of balance ring Special tool equipment, with reference to technical process of the present utility model, balance ring is realized The processing of this new parts of bearings.

2) method with cambered surface region is all faced directly using rose cutter semifinishing and finishing V-shaped groove, avoiding makes The problem of connecing knife platform is easily produced with slotting cutter and rose cutter, ensure that the uniformity of region surface processing situation.

3) when using rose cutter machning v grooves, using the processing mode of " dragging knife ", cutter and work surface shape are ensured It is at a certain angle, avoid because cutting speed is zero and the adverse effect brought to finished surface at center cutter, ensure Product quality.

4) major diameter Rouno Cormer Pregrinding Wheel round nose milling cutter is used, improves the rigidity of cutter in process, improves the line of cutting Speed, avoid and be difficult to be made larger using global head milling cutter tool diameter, the problem of cutter integral rigidity is undesirable, so as to protect The stability of process has been demonstrate,proved, has improved surface quality.

5) a set of firm fitting device is provided for balance ring Milling Machining process, is bolted mode, by frock Device is fixed on platen, and workpiece is fixed on fitting device using fabrication hole, with directly using pressing plate to balance The mode that ring fixes on the table is compared, and work surface is nearby without the pressing plate and bolt of projection, and pass through multiple compressions Point, balance ring is realized and preferably compresses and positions.

6) it is adding for balance ring another side by machining rear corresponding " bumps " platform structure with the face of balance ring first Work provides good support and positioning, and good protection is served to the thin-walled coupling part between the V-shaped groove that machines Effect, avoids it and is deformed in process because of stress.

7) height being had by oneself in itself by fitting device, balance ring work surface is made to reduce and add away from workbench The possibility that cutter is interfered with frock tool and workbench during work, so as to be provided convenience for the establishment of nc program, Operating efficiency is improved, ensure that product quality.

Brief description of the drawings

Fig. 1 is the top shaft side figure after the utility model balance ring machines.

Fig. 2 is the bottom shaft side figure after the utility model balance ring machines.

Fig. 3 is the overall shaft side figure of the utility model support.

Fig. 4 is the use figure of process unit when processing balance ring upper surface.

Fig. 5 is the use figure of process unit when processing balance ring lower surface.

Fig. 6 is the use figure of process unit when processing some processes reserved part of balance ring inside and outside circle.

Fig. 7 is the use figure of process unit when processing balance ring inside and outside circle remaining technique reserved part.

Embodiment

As shown in figure 1, a kind of large-scale core main pump shield electric machine balance ring processing technology and its fitting device, are added using five axles Work center, with reference to special tooling, the upper and lower faces of balance ring are processed respectively, its step includes：

1) as shown in figure 4, balance ring Milling Machining blank 14 is placed on lower supporting plate 13, consolidated using screw 15 It is fixed, with cylindrical and upper surface centering, establish program zero point；

2) upper first upper surface 1, the second upper surface 2 and the region of the 4th upper surface 4 are carried out using blade type wire rod quality thick Processing；

3) roughing is carried out to the upper region of 3rd upper surface 3 using blade type slotting cutter；

4) roughing is carried out to the region nubbin of the 3rd upper surface 3 using blade type rose cutter；

5) semifinishing is carried out to the region of the 3rd upper surface 3 using blade type rose cutter, ensures cutter in process Angle between two sides is equal, and, by the way of successively cutting, from top to bottom. with bottom roundings axis in angle of 45 degrees Successively complete the cutting of certain depth；

6) the first upper surface 1, the second upper surface 2 and the region of the 4th surface 4 are carried out using blade type face milling cutters half essence and Finishing；

7) method for still using step 5), encrypts cutter track, the step pitch reduced between every layer, uses blade type rose cutter The region of 3rd upper surface 3 is finished；

8) square groove of a up/down perforation is processed in the cylindrical technique reserved part of balance ring, balance ring is determined as turning over The benchmark of angle position, fixing screw 15 is pulled down, prepare to turn over balance ring；

9) it is placed on after the balance ring 16 for completing the processing of the first face is turned on upper backup pad 11, reusing screw 15 will Balance ring 16 is fixed；

10) the first lower surface 7, the second lower surface 8 and the region of the 4th lower surface 10 are carried out using blade type wire rod quality thick Processing；

11) roughing is carried out to the region of the 3rd lower surface 9 using blade type slotting cutter；

12) roughing is carried out to the region nubbin of the 3rd lower surface 9 using blade type rose cutter；

13) semifinishing is still carried out to the region of the 3rd lower surface 9 using blade type rose cutter using method 5)；

14) as shown in Fig. 2 carrying out half essence to the second lower surface 8 and the region of the 4th lower surface 10 using blade type face milling cutters And finishing；

15) cutter track is still encrypted using method 5), the step pitch reduced between every layer, uses blade type rose cutter pair The region of 3rd lower surface 9 is finished；

16) semifinishing and essence are carried out to the face of cylinder of the position of the first lower surface 7 using major diameter Rouno Cormer Pregrinding Wheel round nose milling cutter Processing；

17) processing in undercut 5 and the region of outer undercut 6 in completing；

18) as shown in fig. 6, fixing screws 15 are pulled down at interval, the technique for processing the inside and outside circle for pulling down the region of screw 15 is reserved Part；

19) as shown in fig. 7, being fixed balance ring 16 in the region for pulling down screw 15 with pressing plate 17, bolt 18 and nut 19 On support, remaining screw 15 is pulled down, processes the technique reserved part of remaining inside and outside circle.

As shown in figure 3, a kind of large-scale core main pump shield electric machine balance ring Milling Machining fitting device, multiple both ends of riser 12 point Upper support board 11 is not inserted into forming stake body on lower support plate 13；Riser 12 is six, and each riser 12 is using vertical Formula arranges that riser 12 is uniformly distributed along upper support board 11, the outer of lower support plate 13；Riser 12 and upper support board 11 and under Portion's supporting plate 13 is linked together by welding manner, stable connection, ensure that the strength demand of whole fitting device；Such as Fig. 5 Shown upper support board 11 has identical convex-concave structure with balance ring 16, and upper support board 11 processes first with balance ring 16 The male and fomale(M＆F) formed behind face coincide, so as to provide good support.

Claims (1)

1. a kind of large-scale core main pump shield electric machine balance ring Milling Machining fitting device, it is characterized in that：Multiple riser (12) both ends point Upper support board (11) is not inserted into forming stake body on lower support plate (13)；Riser (12) is six, each riser (12) vertical is used, riser (12) is uniformly distributed along upper support board (11), lower support plate (13) outer；Riser (12) Linked together with upper support board (11) and lower support plate (13) by welding manner, stable connection, ensure that whole work The strength demand of assembling device；Upper support board (11) has identical convex-concave structure, and upper support board (11) with balance ring (16) The male and fomale(M＆F) formed behind the first face is processed with balance ring (16) to coincide, so as to provide good support.