Clamp body and the processing positioning method of processing pulley yoke side plate
Technical field
The invention belongs to plant equipment manufacturing technology field, relate to a kind ofly for processing the clamp body of pulley yoke side plate, the invention still further relates to a kind of processing positioning method that utilizes this clamp body to carry out pulley yoke side plate.
Background technology
Pulley yoke is a vitals in airplane air dropping device, and pulley yoke side plate comprises that left plate, right plate form, and left and right side plate is structurally symmetrical, during use, pairing is used, and belongs to large-sized thin wall special-shaped part, in uneven thickness, complex-shaped, dimension precision requirement is higher.
Prior art adopts conventional multipoint positioning and clamping method to add man-hour, owing to cannot overcoming the concentrated problem of stress, can cause the distortion of pulley yoke side plate, is difficult to guarantee the specification requirement of pulley yoke side plate.Left and right part, owing to existing machining accuracy poor, causes quality of fit bad.
Summary of the invention
The object of this invention is to provide a kind ofly for processing the clamp body of pulley yoke side plate, solved prior art pulley yoke side plate and added and there is no special equipment man-hour, on common stand, after processing, stress is concentrated, and is out of shape large problem.
Another object of the present invention is to provide a kind of processing positioning method of aforesaid clamp body to pulley yoke side plate that utilize.
The technical solution adopted in the present invention is: a kind of for processing the clamp body of pulley yoke side plate, the upper surface of clamp body is working face, along the upper surface longitudinal axis both sides of clamp body, be provided with the hole that symmetrical step and many location and installation are used, between two steps, be provided with short groove, the bottom surface of short groove is one section of locating surface, on locating surface, have a stepped hole, the epimere of stepped hole is unthreaded hole, and the hypomere of stepped hole is screwed hole.
Another technical scheme of the present invention is: a kind of processing positioning method that utilizes above-mentioned device to carry out pulley yoke side plate, utilize a kind of device, its structure is, the upper surface of clamp body is working face, is provided with the hole that symmetrical step and many location and installation are used along the upper surface longitudinal axis both sides of clamp body, between two steps, is provided with short groove, the bottom surface of short groove is one section of locating surface, on locating surface, have a stepped hole, the epimere of stepped hole is unthreaded hole, and the hypomere of stepped hole is screwed hole; The upper surface of clamp body is provided with a plurality of pressing plates, auxiliary clamp A and auxiliary clamp B,
First clamp body is fixed on the workbench of lathe, then the light face of the pulley yoke side plate of needs processing is placed on the locating surface of the short groove of clamp body, according to following steps, implement:
The first step, adopt multipoint positioning to carry out roughing, with a plurality of support nails, four supporting surfaces of pulley yoke side plate light face are carried out to supporting and location, by screw, pressing plate is pressed on step, by auxiliary clamp A and auxiliary clamp B, pulley yoke side plate two-end part is positioned, the compression end of each pressing plate and auxiliary clamp is pressed on pulley yoke side plate on locating surface simultaneously, according to processing technology, implements roughing;
Second step, adopt a point location to carry out fine finishining, utilize four support nails to carry out respectively supplemental support on four angles of pulley yoke side plate, in the pilot hole of pulley yoke side plate, be inserted in positioning sleeve, circular pressing plate is pressed in to positioning sleeve upper port, bolt is packed in the stepped hole of positioning sleeve and locating surface, pulley yoke side plate is pressed on locating surface, according to processing technology, implement fine finishining.
The invention has the beneficial effects as follows: this clamp for machining body structure is simple, be convenient to make, easy to use, the method, in pulley yoke left side plate process, has reduced distortion and the error in the processing of pulley yoke side plate by " multipoint positioning " and " point location "; Left and right part completes in same frock, and machining accuracy is high, quality of fit good.
Accompanying drawing explanation
Fig. 1 is the face structure schematic diagram of pulley yoke side plate clamp body of the present invention;
Fig. 2 is the structure schematic diagram of pulley yoke side plate clamp body of the present invention;
Fig. 3 is pulley yoke side plate in the inventive method scheme of installation on clamp body;
Fig. 4 is the top view of pulley yoke side plate in the inventive method and clamp body assembling;
Fig. 5 is the A-A direction schematic cross-section in Fig. 4.
In figure, 1. pressing plate, 2. bolt, 3. circular pressing plate, 4. positioning sleeve, 5. screw, 6. pulley yoke side plate, 7. clamp body, 8. support nail, 9. auxiliary clamp A, 10. auxiliary clamp B, 11. locating surfaces, 12. stepped holes, 13. steps, 14. holes.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Fig. 1, Fig. 2 are of the present invention for processing the upper and lower surface structures schematic diagram of the clamp body 7 of pulley yoke side plate, clamp body 7 is made as a foundry goods, upper surface is working face, along upper surface longitudinal axis both sides, be provided with the hole 14 that symmetrical step 13 and many location and installation are used, between two steps 13, be provided with short groove, the bottom surface of short groove is one section of locating surface 11 that precision is higher, on locating surface 11, have a stepped hole 12, the epimere of stepped hole 12 is unthreaded holes, be used for installing positioning sleeve, the hypomere of stepped hole 12 is screwed holes, is used for fixing the bolt that connects use; The structure of clamp body 7 is: by milling, process, be provided with 6 rectangular grooves for loss of weight.
With reference to Fig. 3, Fig. 4, Fig. 5, the processing positioning method of pulley yoke side plate of the present invention, utilizes aforesaid device, first clamp body 7 is fixed on the workbench of lathe, again the light face of the pulley yoke side plate 6 of needs processing is placed on the locating surface 11 of clamp body 7 short grooves, according to following steps, implements:
The first step, adopt multipoint positioning to carry out roughing, with four supporting surfaces of 8 pairs of pulley yoke side plates of a plurality of support nails, 6 light face, carry out supporting and location, by screw 5, pressing plate 1 is pressed on step 13, by auxiliary clamp A9 and auxiliary clamp B10, pulley yoke side plate 6 two-end parts are positioned, the compression end of each pressing plate 1 and auxiliary clamp is pressed on pulley yoke side plate 6 on locating surface 11 simultaneously, according to processing technology, implements roughing;
Second step, adopt a point location to carry out fine finishining, utilize four support nails 8 to carry out respectively supplemental support on four angles of pulley yoke side plate 6, in the pilot hole of pulley yoke side plate 6, be inserted in positioning sleeve 4, circular pressing plate 3 is pressed in to positioning sleeve 4 upper port, bolt 2 is packed in the stepped hole 12 of positioning sleeve 4 and locating surface 11, pulley yoke side plate 6 is pressed on locating surface 11, according to processing technology, implement fine finishining.
Pulley yoke side plate left and right part is divided into roughing while processing and fine finishining twice, twice processing all completes in this frock.Four following round platforms of the side plate of take during roughing are positioning supports face, adopt multipoint positioning, and pressing plate compresses mode; During fine finishining, for preventing that distortion from adopting " point location ", side adds pin anti-rotation.
While utilizing apparatus of the present invention processing pulley yoke side plate 6, clamp body 7 is fixed on the workbench of lathe, places pulley yoke side plate 6, with pressing plate 1, compress pulley yoke side plate 6, four round platforms that roughing pulley yoke side plate 6 is following.Unclamp pressing plate 1, the anti-turnback of pulley yoke side plate 6, four round platforms that just now processed of take are locating surface, milling pulley yoke side plate Shang Xia 6 thickness reach requirement.During fine finishining, adopt a point location, pulley yoke side plate 6 is placed on clamp body 7, and the pilot hole of appointment on pulley yoke side plate 6 is coordinated with the positioning sleeve 4 on clamp body, and after being pressed on pulley yoke side plate 6 with circular pressing plate 3, with nut screwing clamping, pulley yoke side plate 6 is clamped on clamp body; On four angles of pulley yoke side plate 6, with support nail 8, assist simultaneously.