Vacuum suction nozzle tool for thin-walled part
Technical Field
The utility model relates to an anchor clamps in the machining field, especially a vacuum suction nozzle frock for thin wall spare.
Background
In mechanical design, the thin-wall part has the characteristics of light weight, material saving, compact structure and the like, and is widely used, but the thin-wall part has the defects of poor rigidity, weak strength and the like, so that the thin-wall part is very easy to deform in the machining process, the form and position errors of the part cannot be effectively controlled, and the machining quality of the part cannot be ensured. At present, a CNC vacuum chuck clamp is usually adopted for clamping thin-wall parts, a thin-wall frameless supporting structure, a thin-wall porous structure and a special-shaped multi-rib cavity thin-wall structure which have high flatness requirements are adopted, and a vacuum pumping operation time interval and an intermittent time interval exist in the process of vacuumizing through a vacuum pump, so that the vacuum pressure fluctuates between 50 and 80KPa, and the CNC vacuum chuck clamp is in rigid surface contact and is often greatly influenced by the fluctuation of a contact surface and the suction force, so that the final stability of the flatness of a product is poor, and the quality of the product and the satisfaction degree of customers are seriously influenced.
Disclosure of Invention
The utility model aims to solve the technical problem that a vacuum suction nozzle frock that is used for thin wall spare that reduces the product deformation is provided to undulant change.
The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a vacuum suction nozzle frock for thin wall spare, includes PMKD, sets up a plurality of fixed orificess on PMKD, the PMKD surface set up boss and cavity, the fixed orifices set up in boss and cavity, fixed orifices bottom set up the suction hole in the fixed orifices on set up the suction nozzle subassembly, the suction nozzle subassembly including connect the suction nozzle base on the suction hole and install the suction nozzle on the suction nozzle base, the suction nozzle adopt silica gel material one shot forming to make.
Further specifically, the suction nozzle base comprises a fixing head in an inverted cone shape, a connecting rod connected with the fixing head and an external thread arranged at the tail of the connecting rod, an internal thread is arranged in the suction hole, and the external thread is matched with the internal thread; the middle of the suction nozzle base is provided with a through hole which is communicated with the suction hole.
Further specifically, a driving piece is fixed on the connecting rod and drives the suction nozzle base to rotate so that the internal thread is matched with the external thread.
More specifically, the driving member is a polygonal nut fixed to the connecting rod.
More specifically, the polygonal nut is a regular hexagonal nut.
Further specifically, a sealing ring is arranged between the driving piece and the bottom of the fixing hole.
Further specifically, the suction nozzle comprises a suction nozzle head and a fixed seat arranged at the lower part of the suction nozzle head, the fixed seat is arranged on the suction nozzle base, and the suction nozzle is hollow.
The suction nozzle comprises a suction nozzle head and a fixed seat arranged at the lower part of the suction nozzle head, the fixed seat is arranged on a suction nozzle base, and the suction nozzle is hollow; the fixing seat is internally provided with a cavity in an inverted cone shape, and the cavity is sleeved on the fixing head.
The back of the fixed bottom plate is provided with an air suction groove, the air suction groove is communicated with a plurality of air suction holes, one side of the fixed bottom plate is provided with an air suction nozzle which is communicated with the air suction groove, and the back of the fixed bottom plate is provided with a sealing plate for sealing the air suction groove.
More specifically, the height of the suction nozzle assembly is higher than that of the boss.
The utility model has the advantages that: after the structure is adopted, the structure of the sucker tool is changed, the rigid surface contact is changed into the regional point contact, and the flexible sucker head is used for perfectly fitting the surface of a product; the suction force fluctuation is not influenced any more, and a qualified product with good quality and more stability can be obtained; the previous procedure can reduce the number of times of roughing and save a large amount of clamping time, and the previous procedure does not need to be controlled at high precision; time and cost are saved.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic view of the suction nozzle of the present invention;
fig. 3 is a schematic structural view of the nozzle base of the present invention.
In the figure: 1. fixing the bottom plate; 2. a boss; 3. a concave cavity; 4. a fixing hole; 5. a suction nozzle assembly; 6. a suction nozzle; 51. a suction nozzle; 52. a suction nozzle base; 511. a suction nozzle head; 512. a fixed seat; 521. a fixed head; 522. a connecting rod; 523. a drive member.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1, 2 and 3, a vacuum suction nozzle tool for a thin-walled workpiece includes a fixing base plate 1 and a plurality of fixing holes 4 arranged on the fixing base plate 1, wherein a boss 2 and a cavity 3 are arranged on the surface of the fixing base plate 1, the fixing holes 4 are arranged in the boss 2 and the cavity 3, the boss 2, the cavity 3 and the fixing holes 4 are determined according to the specific shape of the thin-walled workpiece, a suction hole is arranged at the bottom of the fixing hole 4, the suction hole enables the space in the fixing hole 4 to be communicated with the back of the fixing base plate 1, a suction nozzle assembly 5 is arranged on the suction hole in the fixing hole 4, the suction nozzle assembly 5 includes a suction nozzle base 52 connected to the suction hole and a suction nozzle 51 arranged on the suction nozzle base 52, and the suction nozzle 51 is made of a silica gel material by one-shot forming; the middle part of the suction nozzle base 52 is provided with a through hole connected with the suction hole, the suction nozzle base 52 and the suction hole can be fixed in various ways, such as welding, riveting and threaded connection, in the scheme, in order to facilitate replacement, the suction nozzle 51 is directly sleeved on the suction nozzle base 52 in a threaded connection way; the overall height of the nozzle assembly 5 needs to be higher than the height of the boss 2.
As shown in fig. 3, the suction nozzle base 52 includes an inverted conical fixed head 521, a connecting rod 522 connected with the fixed head 521, and an external thread arranged at the tail of the connecting rod 522, wherein an internal thread is arranged in the suction hole, and the external thread and the internal thread are matched to realize the connection between the suction nozzle base 52 and the suction hole; on the basis, in order to facilitate installation, a driving part 523 is arranged for driving, the driving part 523 can be arranged on the fixed head 521 or the connecting rod 522, the shape of the driving part 523 is polygonal, operation is facilitated, the fixed head 521 or the connecting rod 522 can be directly manufactured into a polygonal structure when the suction nozzle base 52 is manufactured, and operation by using a wrench is facilitated; alternatively, the polygonal nut may be welded directly to the connecting rod 522, in which case the hexagonal nut is welded to the connecting rod 522; the hexagonal nut is rotated through a wrench, so that the suction nozzle base 52 rotates, the internal thread is screwed with the external thread, and the suction nozzle base 52 is installed and fixed; furthermore, in order to guarantee the sealing effect of the air suction hole, a sealing ring is installed between the hexagonal nut and the bottom of the fixing hole 4, and the sealing ring is tightly pressed after the hexagonal nut is screwed to achieve the sealing effect.
As shown in fig. 2, the suction nozzle 51 includes a suction nozzle head 511 and a fixing seat 512 disposed at a lower portion of the suction nozzle head 511, the fixing seat 512 is disposed on the suction nozzle base 52, the suction nozzle 511 is hollow, and the hollow space not only serves as a function of communicating with a suction hole, but also is used for connecting a fixing head; the suction nozzle 51 is integrally made of silica gel, so that the suction nozzle has good elasticity and sealing effect, and meanwhile, the influence of vacuum fluctuation on a product can be reduced; the fixing base 512 is internally provided with a cavity in an inverted cone shape, the cavity is sleeved on the fixing head, the shape of the cavity is consistent with that of the fixing head, the cavity is required to be smaller than the fixing head, and the sealing effect can be conveniently achieved after the suction nozzle is installed.
The air suction holes are directly connected with the vacuum pump to realize the air suction function, and each air suction hole is connected through an air pipe to cause more air pipes which are very messy; therefore, the back surface of the fixed bottom plate 1 is provided with an air suction groove which connects all air suction holes in series, one side of the fixed bottom plate 1 is provided with an air suction nozzle 6, the air suction nozzle 66 is communicated with the air suction groove, the back surface of the fixed bottom plate 1 is provided with a sealing plate for sealing the air suction groove, and the sealing plate and the fixed bottom plate are sealed through a sealing ring.
In conclusion, through the arrangement of the structure, a CNC vacuum chuck clamp is not used, and a suction nozzle of silica gel is used instead, so that the damage of suction fluctuation to a workpiece is reduced; the suction nozzle assembly is detachably connected, so that the maintenance and the replacement are convenient; the previous procedure can reduce the number of times of roughing and save a large amount of clamping time, and the previous procedure does not need to be controlled at high precision; time and cost are saved.
It is to be emphasized that: the above embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form, and any simple modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments are all within the scope of the technical solution of the present invention.