Technical field
The utility model relates to broaching fixture.
Background technology
The quality of the large-scale wheel disc tongue-and-groove broaching of engine quality directly has influence on the assembly quality of wheel disc and blade and then influences the whole assembly quality of engine.The near 2m of the diameter of some wheel discs more than the weight 500kg, needs more than 100 tongue-and-grooves that are uniformly distributed with of processing on the wheel disc, the cutting force that needs is very big, and the precision of wheel disc tongue-and-groove is high again, and general broacher has satisfied not these requirements.
Summary of the invention
The broaching fixture that the purpose of the utility model is that a kind of accurate calibration is provided and increases thrust.
The utility model provides a kind of large-scale wheel disc tongue-and-groove broaching fixture; Mainly comprise base, positioner part and clamping device part; It is characterized in that: the rotating shaft of positioner part is inserted in the base, and clamping device partly comprises gland, double-screw bolt, nut and cramp frame, and double-screw bolt inserts in gland and the base; On gland, cooperating to come workpiece pressing with nut with double-screw bolt---wheel disc to be processed, cramp frame place on the groove and gland of tongue-and-groove two wing bases to be processed.
The large-scale wheel disc tongue-and-groove broaching fixture that the utility model provides; Its positioner part can comprise locating ring, locating shaft, angle alignment pin and rotating shaft; Be fixed with locating ring in the rotating shaft; Be fixed with locating shaft and angle alignment pin on the locating ring, realize six point locations (locating
ring plane 3 points, locating shaft axial and angle alignment pin 1 point) at 2.
The large-scale wheel disc tongue-and-groove broaching fixture that the utility model provides; Its locating ring can have the indexing means part fully; Mainly comprise index dial---locating ring or base, calibration latch and vee-block, vee-block is pressed to the calibration latch with cam (handle), realizes quick index; The calibration latch inserts base through locating ring, realizes accurate calibration location.
The large-scale wheel disc tongue-and-groove broaching fixture that the utility model provides can have lining in the hole of its locating ring and/or base, so that indexing accuracy is guaranteed in maintenance in time.
The large-scale wheel disc tongue-and-groove broaching fixture that the utility model provides, its rotating shaft can match with base through lining and/or bearing, so that rotate.
The large-scale wheel disc tongue-and-groove broaching fixture that the utility model provides, the interplanar of its locating ring and base can have the ball of ball or band spring, to reduce planar friction.
The large-scale wheel disc tongue-and-groove broaching fixture that the utility model provides, can match with base through axle in the inside of its rotating shaft, rotate flexibility to improve.
The large-scale wheel disc tongue-and-groove broaching fixture that the utility model provides, the end face of its rotating shaft can cooperate with axle to reduce wearing and tearing through bearing, further improves and rotates flexibility.
The large-scale wheel disc tongue-and-groove broaching fixture that the utility model provides, its advantage is: thrust is big, guarantees workpiece non-displacement in the broaching process; Indexing accuracy is high and quick; Rotate light, flexible; Maintenance is convenient.
Description of drawings
Fig. 1 is the structural representation of large-scale wheel disc tongue-and-groove broaching fixture;
Fig. 2 is the A-A profile of large-scale wheel disc tongue-and-groove broaching fixture;
Fig. 3 is the G-G profile of large-scale wheel disc tongue-and-groove broaching fixture.
The specific embodiment
Embodiment 1
Large-scale wheel disc tongue-and-groove broaching fixture, its structure is as shown in Figure 1, comprises base 1, positioner part 2,
clamping device part 4, indexing means
part 3 and
spindle unit part 5.
Clamping
device part 4 comprises
gland 41, double-
screw bolt 42,
nut 43 and
cramp frame 44; Double-
screw bolt 42 inserts in
gland 41 and the base 1; On
gland 41, cooperating to come workpiece pressing 6 with
nut 43 with double-
screw bolt 42---wheel disc to be processed,
cramp frame 44 place on the groove and
gland 41 of tongue-and-groove two wing bases 1 to be processed.
Positioner part 2 comprises locating ring 21, locating
shaft 22,
angle alignment pin 23 and rotating shaft 24; Rotating shaft 24 is inserted in the base 1; Be fixed with locating ring 21 in the rotating shaft 24; Be fixed with locating
shaft 22 and
angle alignment pin 23 on the locating ring 21, realize six point locations (locating ring 21
planes 3 points, locating
shaft 22 axial and
angle alignment pin 23 1 points) at 2.
Indexing means part 3 (seeing Fig. 2 and 3) comprises index dial---locating ring 21,
calibration latch 31 and vee-block 32; Vee-block 32 usefulness handle cams 33 are pressed to
calibration latch 31;
Calibration latch 31 inserts base 1 through locating ring 21, has
lining 34 and
lining 35 respectively in the hole of locating ring 21 and base 1.
Spindle unit part 5: rotating shaft 24 matches with base 1 through
lining 54 and bearing 53; Bearing 53 has bearing
cap 56; Locating ring 21 has the ball 57 of being with spring with the interplanar of base 1; Match with base 1 through
axle 51 in the inside of rotating shaft 24,
axle 51 usefulness locking nuts 55 are fixed on the
lining 54, and the end face of rotating shaft 24 cooperates with
axle 51 through bearing 52.