CN102489789A

CN102489789A - Gear-shaping clamp

Info

Publication number: CN102489789A
Application number: CN2011104251414A
Authority: CN
Inventors: 周正元; 王军; 巢雨苍
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-12-19
Filing date: 2011-12-19
Publication date: 2012-06-13

Abstract

The invention relates to a gear-shaping clamp, which is fixed on a gear shaper machine tool and comprises a core seat fixed on the gear shaper machine tool, a spherical-surface gasket, an extension-bellow sleeve, a spherical-surface pressing ring and a pull rod, wherein a stepped end is arranged on the core seat, and the spherical-surface gasket is fixed at the stepped end; the upper surface of the stepped end of the core seat extends upwards to form a mandrel, the extension-bellow sleeve penetrates through the spherical-surface gasket and is tightly sleeved on the mandrel, and the extension-bellow sleeve is positioned on the upper surface of the stepped end; and the spherical-surface pressing ring is located at the upper end face of the extension-bellow sleeve, and the pull rod penetrates through the spherical-surface pressing ring and the core seat. The gear-shaping clamp is high in positioning precision, very convenient and rapid for mounting and dismounting a workpiece and long in service life, and has the advantages of increasing the gear shaping precision, shortening the auxiliary time for machining the workpiece and increasing the machining production efficiency.

Description

A kind of gear shaping anchor clamps

Technical field

The present invention relates to a kind of gear shaping anchor clamps, belong to the Gear Processing technological equipment.

Background technology

No matter the bore of producing in batches is circular hole or splined hole, generally all is to be formed by the broaching tool broaching.In order to let broaching tool that arranged enough service life, new broaching tool always lets the hole accomplish full-size.And the anchor clamps positioning core axle can both be installed in order to guarantee qualified part, and its size is always accomplished also littler than Kongzui small size.Unavoidably just gapped and produce position error between the two like this, influence machining accuracy.Hold down gag adopts common plain washer or open washer, makes the distortion of workpiece and mandrel for certainly led to the location than the slotted hole workpiece, influences machining accuracy, and the service life of anchor clamps is short.

Summary of the invention

For addressing the above problem, the present invention provides a kind of gear shaping anchor clamps, and these anchor clamps adopt snake abdomen nested structure, have eliminated the gap between workpiece hole and the mandrel; Adopt sphere trim ring and spheric washer to compress and avoided crossing of workpiece clamping to locate, make that the machining accuracy of part is high.

For achieving the above object, the technical scheme that the present invention adopted is:

A kind of gear shaping anchor clamps, this gear shaping clamps comprise the core print seat, spheric washer, snake abdomen cover, sphere trim ring, the pull bar that are fixed in the gear shapping machine lathe on the gear shapping machine lathe, on said core print seat, stepped end is arranged, and said spheric washer is fixed in stepped end; Upper surface in said core print seat stepped end extends upward out a mandrel, and said snake abdomen cover passes spheric washer and closely is placed on the mandrel, and said snake abdomen cover is positioned the upper surface of stepped end; Said sphere trim ring is positioned at the upper surface of snake abdomen cover, and said pull bar passes sphere trim ring and core print seat.

The head of said pull bar cooperates with arc surface with the sphere trim ring.

The arch groove that has a circle to match in said spheric washer lower surface with the core print seat stepped end; The inner peripheral surface of said spheric washer has two half-round cross holes along its axis; Said core print seat is fixedly connected with spheric washer through two anti-turn screws, and the part of said two anti-turn screw epimeres is each positioned in two half-round cross holes of spheric washer.

Said snake abdomen cover comprises three annulus that are arranged in order that connect through six long protruding wings each other; At the annulus outer surface of both sides up and down six the concordant protruding wings of weak point of lower surface, upper surface with snake abdomen cover are arranged respectively, another part of said two anti-turn screw epimeres is each positioned between adjacent two protruding wings of weak point of snake abdomen cover downside annulus outer surface.Anti-turn screw one end is spun in the core print seat, the other end be inserted in the half-round cross hole of spheric washer and two protruding wings of weak point of snake abdomen cover downside annulus outer surface between, can prevent that snake abdomen cover, spheric washer from rotating with respect to core print seat.

The head diameter H of said pull bar and the external diameter h of sphere trim ring are all less than snake abdomen cover D outer diameter.

There is flange lower end in said core print seat stepped end, in the lower end of flange boss is arranged, and said core print seat is felt relieved on the gear shapping machine lathe through boss, and is fixed on the gear shapping machine lathe through flange.

Operation principle of the present invention is, the hydraulic jack of pull bar with the gear shapping machine lathe is connected, can be drop-down automatically after gear shapping machine lathe unlatching work; Utilizing the snake abdomen to overlap axial pressurized has micro-moving can force it to be radially expanded the characteristics of clamping work pieces; Be pressed in the upper surface of snake abdomen cover through the sphere trim ring, thereby make snake abdomen cover diametric(al) tensioner, eliminated the gap between workpiece hole and the mandrel; Improve positioning accuracy, thereby improve the gear shaping precision.Because sphere trim ring and spheric washer all only limit one degree of freedom; Again since spheric washer and core print seat stepped end with cambered surface cooperate, the sphere trim ring cooperates with cambered surface with the head of pull bar; Make the good of clamping work pieces to disposition; Driving the sphere trim ring when pull bar is drop-down, to press down snake abdomen cover more stable, workpiece and mandrel crossed locate and be out of shape, and guaranteed machining accuracy.

Because the head diameter of pull bar and the external diameter of sphere trim ring are all little than snake abdomen cover external diameter (being workpiece hole); Again because snake abdomen cover adopts highly elastic material to process and special domes; When workpiece after slotting processes tooth; In case pull bar unclamps, the diameter of snake abdomen cover is returned to initial size again at once, and workpiece just can directly take off from anchor clamps.

The present invention reaches without snake abdomen cover cylindrical mandrel gear shaping anchor clamps with conventional flat packing ring or open washer and compares, and advantage is to have improved positioning accuracy owing to having adopted the snake abdomen to overlap, thereby has improved the Gear Shaping precision; Owing to adopted sphere trim ring and spheric washer to avoid the location of crossing of workpiece, guaranteed machining accuracy; Because the sphere trim ring need not take off when changing workpiece, the workpiece installing/dismounting is very convenient, quick, has shortened the non-cutting time of workpiece processing, has improved processing efficient, and the long service life of these anchor clamps.

Description of drawings

Structural representation when Fig. 1 loads onto workpiece for the present invention;

Fig. 2 is the perspective view of snake abdomen cover;

Fig. 3 is the perspective view of spheric washer;

Fig. 4 is the planar structure sketch map of spheric washer.

Among the figure: core print seat 1, stepped end 1-1, mandrel 1-2, flange 1-3, boss 1-4, spheric washer 2, arch groove 2-1, half-round cross hole 2-2, snake abdomen cover 3, annulus 3-1, long protruding wing 3-2, short protruding wing 3-3, sphere trim ring 4, pull bar 5, anti-turn screw 6, workpiece 7.

The specific embodiment

Below in conjunction with accompanying drawing and specific embodiment the present invention is described further.

Like Fig. 1～shown in Figure 4, a kind of gear shaping anchor clamps comprise core print seat 1, spheric washer 2, snake abdomen cover 3, sphere trim ring 4, pull bar 5.

Snake abdomen cover 3 comprises three annulus 3-1; Connect through six protruding wing 3-2 of the length that circumferentially is uniformly distributed with between the annulus 3-1; At the annulus 3-1 outer surface of both sides up and down the concordant protruding wing 3-3 of six weak points that circumferentially are uniformly distributed with in lower surface, upper surface with snake abdomen cover 3 is arranged respectively, present embodiment snake abdomen cover 3 adopts carbon steel 65Mn materials; Stepped end 1-1 is arranged on core print seat 1, extend upward out a mandrel 1-2 at the upper surface of stepped end 1-1, snake abdomen cover 3 passes spheric washer 2 and closely is placed on the mandrel 1-2; The arch groove 2-1 that has a circle to match in spheric washer 2 lower surfaces with the stepped end 1-1 of core print seat 1; Inner peripheral surface at spheric washer 2 has two half-round cross hole 2-2 along its axis; Present embodiment core print seat 1 is fixedly connected with spheric washer 2 through 2 * M5 anti-turn screw 6; The part of anti-turn screw 6 epimeres is positioned at the half-round cross hole 2-2 of spheric washer 2, and another part of anti-turn screw 6 epimeres overlaps between the protruding wing 3-3 of adjacent two weak points of 3 downside annulus 3-1 outer surfaces at the snake abdomen.

Sphere trim ring 4 is positioned at the upper surface of snake abdomen cover 3, and pull bar 5 passes sphere trim ring 4 and core print seat 1, and the head of pull bar 5 and sphere trim ring 4 cooperate with arc surface; The head diameter H of pull bar 5 and the external diameter h of sphere trim ring 4 all overlap 3 D outer diameter (being workpiece hole) less than the snake abdomen.

There is flange 1-3 lower end at core print seat 1 stepped end 1-1, in the lower end of flange 1-3 boss 1-4 is arranged.

The present invention is when work; At first the boss 1-4 through core print seat 1 locatees on the gear shapping machine lathe in the lower surface of centering and flange 1-3 on the gear shapping machine lathe; Pass flange 1-3 through 3 * M10 bolt (not shown) and core print seat 1 is fastened on the workbench of gear shapping machine lathe, pull bar 5 is screwed in the hydraulic jack connecting ring under the gear shapping machine platen face; After lathe is adjusted, the workpiece of treating gear shaping 7 directly is set to the cylindrical centering of snake abdomen cover 3, be pressed onto location, spheric washer 2 upper surfaces after; Open the gear shapping machine start button; Pull bar 5 is drop-down by hydraulic jack immediately, and the snake abdomen overlaps behind 3 axial compressions radially tensioner, realizes the clamping of workpiece 7.The main motion of Gear Shaping is the campaign of slotting up and down reciprocatingly of pinion cutter, and one of feed motion is the gear motion of pinion cutter and workpiece 7.The gear shapping machine workbench rotates and drives core print seat 1 rotation, and the snake abdomen that is contained on the core print seat 1 overlaps 3 because 7 rotations of back drive workpiece are rotated in the effect of frictional force and anti-turn screw 6.After workpiece 7 slotting process tooth, the automatic releasing lever 5 of lathe, the diameter of snake abdomen cover 3 is returned to initial size again at once, and workpiece 7 just can directly take off from these anchor clamps.

The present invention not only machining accuracy is high, and the workpiece installing/dismounting is very convenient, quick, has shortened the non-cutting time of workpiece processing, has improved processing efficient.

Claims

1. gear shaping anchor clamps; This gear shaping clamps is on the gear shapping machine lathe; It is characterized in that: comprise the core print seat, spheric washer, snake abdomen cover, sphere trim ring, the pull bar that are fixed in the gear shapping machine lathe, on said core print seat, stepped end is arranged, said spheric washer is fixed in stepped end; Upper surface in said core print seat stepped end extends upward out a mandrel, and said snake abdomen cover passes spheric washer and closely is placed on the mandrel, and said snake abdomen cover is positioned the upper surface of stepped end; Said sphere trim ring is positioned at the upper surface of snake abdomen cover, and said pull bar passes sphere trim ring and core print seat.

2. gear shaping anchor clamps according to claim 1 is characterized in that: the head of said pull bar cooperates with arc surface with the sphere trim ring.

3. gear shaping anchor clamps according to claim 1; It is characterized in that: the arch groove that has a circle to match in said spheric washer lower surface with the core print seat stepped end; The inner peripheral surface of said spheric washer has two half-round cross holes along its axis; Said core print seat is fixedly connected with spheric washer through two anti-turn screws, and the part of said two anti-turn screw epimeres is each positioned in two half-round cross holes of spheric washer.

4. gear shaping anchor clamps according to claim 3; It is characterized in that: said snake abdomen cover comprises three annulus that are arranged in order that connect through six long protruding wings each other; At the annulus outer surface of both sides up and down six the concordant protruding wings of weak point of lower surface, upper surface with snake abdomen cover are arranged respectively, another part of said two anti-turn screw epimeres is each positioned between adjacent two protruding wings of weak point of snake abdomen cover downside annulus outer surface.

5. gear shaping anchor clamps according to claim 1 and 2 is characterized in that: the head diameter H of said pull bar and the external diameter h of sphere trim ring are all less than snake abdomen cover D outer diameter.

6. gear shaping anchor clamps according to claim 1 is characterized in that: there is flange the lower end in said core print seat stepped end, in the lower end of flange boss is arranged, and said core print seat is felt relieved on the gear shapping machine lathe through boss, and is fixed on the gear shapping machine lathe through flange.