CN2091194U

CN2091194U - Conical o type seal slot treating device

Info

Publication number: CN2091194U
Application number: CN 91202788
Authority: CN
Inventors: 李宏达; 赵自勇
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-02-25
Filing date: 1991-02-25
Publication date: 1991-12-25

Abstract

The utility model relates to a special tool for processing an O-shaped sealing slot on the surface of a cone. The special tool is especially suitable for the manufactures of a low torsional moment and a high pressure valve. The special tool is characterized in that a master form (8) which an O-shaped slot is connected with a main shaft (1) which can axially move and axially rotate; the device (6) of a positioning pin is connected with the slot of the master form (8); the central line of the upper slot of the master form (8) is vertical to the tangent of the junction of the buses of the cone, and passes through the central line of the cone to cross the central line of the cone while the bottom of the slot is parallel to the tangent. The composite linking motion of the main shaft (1) depends on a hand lever (2), a screw rod (9), and a hand wheel (10) which are arranged on the main shaft (1) following the motion of the master form (8) to generate. Thereby, the process of the O-shaped sealing slot is completed.

Description

Conical O type seal slot treating device

The utility model relates to a kind of specific purpose tool at cone (or at cylinder) Surface Machining " O " shape seal groove, and it is applicable to the manufacturing of low moment of torsion high pressure valve.

The existing conical surface " O " shape seal groove method for processing: be that the principle that utilization dish milling cutter is done the synchronous rolling motion at part on milling machine is processed, but this process principle is because the interference of cutter in working angles, make groove form the horn mouth that differs in size at different positions, be that groove width does not wait, differ between 0.36～0.45mm, this is that the basic demand institute of " O " shape seal groove is unallowed.

Task of the present utility model is: at above-mentioned mass defect, adopt pattern and cutter, the principle that tool is synchronized with the movement processes qualified " O " shape seal groove.

The conical surface " O " shape seal groove machining characteristics and motion process thereof are by four kinds of speed changes, and a compound feeding motion is formed in break-in campaign interlock, and incision feed motion is finished.As shown in Figure 2:

1. the lateral velocity variation of part moves back and forth

2. the axial speed change of part moves back and forth

3. part is made the speed change crankmotion around axis own

4. part is done the speed and direction changing motion around the center of " O " shape seal groove

More than have a kind of relation of inherence between this four kinds of speed and direction changings motion, that is to say that these four kinds of motions are to link together with a ten minutes complex mathematical simultaneous equations (relational expression), to form the cutting feed motion in a space of acting in agreement, just all the people present marks interlock.And to realize that all the people present marks interlock and just must possess following three conditions:

A. have all the people present to mark the numerical control machining center of interlock function, domestic still do not have this equipment;

B. the simultaneous equations that possesses four kinds of movement relations;

C. possesses procedure by the design of particular kind of relationship formula.

These three conditions are irrealizable at present at home.

5. radial feed motion, this is a kind of independently simple motion

In order to seek suitable China's national situation, create a kind of simple, not only economy but also can guarantee the process of product quality, will make the compound motion of four kinds of speed and direction changings interlock of cutting feeding be reduced to the compound feeding motion of two kinds of speed and direction changings, thereby the operation that might finish whole process on standard milling machine become possibility.

Task of the present utility model is finished as follows, utilizes pattern to make the cutting feeding be reduced to the compound interlock campaign of two kinds of speed and direction changings by the compound interlock campaign of four kinds of speed and direction changings.To be pattern make speed change along axis moves toward complex line, does the swing of rotation speed change simultaneously, inserts a steady pin in " O " shape groove of pattern.Under the restriction of steady pin, work piece can only be walked out the track of " O " shape seal groove along " O " shape seal groove, thereby forms the feed motion in the working angles.

Again the part that will process and pattern are fixed on the same axis, (note: the bus of the processed point of part and pattern must be a level to make slotting cutter be in the corresponding position of pattern steady pin, just and cutter, the steady pin axis is vertical, and its intersection point must be in the extreme higher position) at first make cutter incision groove depth, finish the cutting feed motion then, " O " shape seal groove just processing has survived.

Concrete technical scheme of the present utility model is: on milling machine, a main shaft 1 that can move axially with axial rotation is installed, on main shaft 1, connect a pattern 8 that has " O " shape groove, also connect in the groove of this pattern 8 with dowel device 6, the lower end of dowel device 6 has a steady pin 7 directly to insert in the groove of pattern 8, be slidingly matched with it, on the shoulder of the left side of main shaft 1, handle 2 is housed in addition, also has a conical bore on the shoulder of its main shaft 1, selling 5 one inserts in the conical bore, the other end connects with feeler block 11, and the right-hand member of main shaft 1 also is equipped with screw rod 9 and handwheel 10.When static, the center line of groove is vertical with the tangent line of cone generatrices intersection point on the pattern 8, and intersects with it by the center line of cone, bottom land is then vertical with above-mentioned tangent line, while steady pin 7, the axis of cutter 3 bus with work piece 4 all the time is vertical, and intersection point is in the extreme higher position.In the time of dynamically, cutter 3 is done to cut into synchronously along " O " shape groove on the pattern 8 with steady pin 7 and is rotatablely moved.With form on the work piece 4 with pattern 8 on " O " shape groove size, qualified products that shape is identical.

Below with reference to accompanying drawing the utility model is described in further detail.

Fig. 1 is an overall construction drawing of the present utility model

Fig. 2 is a fundamental diagram of the present utility model

With reference to Fig. 1: a main shaft 1 that can move axially with axial rotation is housed on the device of the conical surface " O " shape seal groove, on main shaft 1, connect a pattern 8 that has " O " shape groove, also connect in the groove of this pattern 8 with dowel device 6, on the shoulder of the left side of main shaft 1 handle 2 is housed in addition, right-hand member is equipped with screw rod 9 and handwheel 10.Be to be slidingly matched in groove by steady pin 7 to realize between pattern 8 and the dowel device 6, also have a conical bore on the shoulder on main shaft 1 left side, sell 5 one and insert in the conical bore, the other end connects with feeler block 11.

For the center line of groove on this device pattern 8 of quality of protecting product is vertical with the tangent line of cone generatrices intersection point, and intersect the then parallel requirement that could satisfy technology of bottom land with it with above-mentioned tangent line by the center line of cone.

During operation: rotate handwheel 10, handle 2 inserts in the conical bore of main shaft 1 pin 5 of feeler block 11, makes pattern 8 location, then this device is installed in centering on the milling machine table; Feeler block 11 is aimed at the slotting cutter coarse positioning, adjust the radial position and the axial location of device, accurately behind the location device is fixed and clamped, bed surface is locked.In the processing afterwards, motion is only cut or withdraw to lathe up and down.

Debugging: rotating handwheel 10 is initiatively, and main shaft 1 is moved axially, and at this moment handle 2 is promptly done the follow-up motion under the guiding of pattern 8.Add external force and overcome the dead point when handle 2 is in the dead-centre position, remove external force after the dead point overcomes, cutter forwards 180 ° to, and can to meet another dead point the same, at this moment handwheel 10 inverse transform to, when to 360 ° of returns, the motion debugging is finished.At this moment check a upper/lower positions again, confirm that the position is accurate, motion is flexible, no stuck phenomenon, and debugging is just accused and is finished.

Process operation: work piece 4 and pattern 8 are fixed on the same main shaft 1, and tapering is consistent, and the bus of processed point must be a level, and promptly with cutter, steady pin 7 axis normal, and intersection point is in the extreme higher position.The rising platen is finished and is cut to the groove depth size lockedly, and then as the coming again of debugging motion, process can be finished, and takes off part and checks errorlessly, can carry out next process.

Advantage of the present utility model and economic benefit

Advantage: groove width is wide along diametric(al) in 360 ° of scopes, the center line of groove is vertical with the parent tangent line, and groove depth etc. are dark, error≤0.05, it is smooth that the bottom of groove is straight, be a straight line along the diameter tangential direction, the fineness both sides, bottom land has satisfied technological requirement, guaranteed the quality of product, overcome in the past because the high pressure moment of torsion is big, opening and closing turns to motionless, seals bad problem.

Economic benefit: U.S. road Weir company finishes at the machining center that all the people present marks interlock, one namely 2,000,000 dollars, price height not only, and to China's blockade on new techniques, domesticize exactly 360,000 yuan of CNC milling machines also can't satisfy the quality problems of the conical surface " O " shape seal groove. Just can solve process quality issue yet the utility model only needs 2000 yuans, visible benefit is very high. Not only market is big for it, the profit height, and saved a large amount of foreign exchanges to country, improved the oil equipment competitiveness in market at home and abroad.

Claims

1, a kind of conical surface " O " shape seal groove processing unit (plant) of on taper seat, processing " O " shape groove, a main shaft (1) that can move axially with axial rotation is housed on it, go up pattern (8) that has " O " shape groove of connection at main shaft (1), also connect in the groove of this pattern (8) with dowel device (6), handle (2) is housed on the left side shoulder of main shaft (1) in addition, right-hand member is equipped with screw rod (9) and handwheel (10), it is characterized in that: the center line that pattern (8) is gone up groove is vertical with the tangent line of cone generatrices intersection point, and crossing with it by the center line of cone, bottom land is then parallel with above-mentioned tangent line.

2, the conical surface according to claim 1 " O " shape seal groove processing unit (plant), it is characterized in that: lean on steady pin (7) in groove, to be slidingly matched between pattern (8) and the dowel device (6) and realize, the axis of steady pin (7), cutter (3) bus with processed point all the time is vertical, and intersection point is in the extreme higher position.

3, the conical surface according to claim 1 " O " shape seal groove processing unit (plant) is characterized in that: also have a conical bore on the shoulder on main shaft (1) left side, sell (5) one and insert in the conical bore, the other end connects with feeler block (11).