Vacuum positioning fixture
Technical field
The utility model relates to Machining Technology field, particularly relates to a kind of in order to plate-shaped member is carried out to the vacuum positioning fixture of quick location.
Background technology
In machining, often run into and board-like material is positioned to certain station is processed or other operations, generally to pass through magnetic now, briquetting or vice clamp, along with scientific and technological development, novel material goes out to the greatest extent not poor, have much can not magnetic absorption material for example: aluminium, copper, stainless steel, plastic cement, titanium alloy etc., cause existing positioning element to be suitable for well, particularly when processing sheet type workpiece, common briquetting or vice clamp and can produce internal stress to workpiece, take off after workpiece owing to being subject to internal stress effect meeting to make workpiece deformation, and sheet type workpiece clamping is difficult to competent, so just needs are a kind of can be by tool tabular or that bulk material is located fast.
Utility model content
The purpose of this utility model is for the technological deficiency existing in prior art, and provides a kind of in order to plate-shaped member is carried out to the vacuum positioning fixture of quick location.
For realizing the technical scheme that the purpose of this utility model adopts, be:
A kind of vacuum positioning fixture, comprise the sucker and the vacuum generator that are fixedly connected with work top, on the upper surface of described sucker, be formed with at least one positioning chamber, be formed with the through hole being communicated with positioning chamber on the sidewall of described sucker, described through hole is communicated with vacuum generator by the road.
On described sucker upper surface, be provided with two above even number positioning chambers, the even interval of described positioning chamber is column-row arrangement.
In described positioning chamber surrounding, be provided with at least two alignment pins, described alignment pin is in order to locate workpiece level to be positioned.
Compared with prior art, the beneficial effects of the utility model are:
The material of sucker of the present utility model can arbitrarily be adjusted the materials such as available aluminium, copper, steel plate or stainless steel according to demand, can not need specific material with existing material, so that the utilization again of waste material, the through hole being communicated with vacuum generator is arranged on to sidepiece convenient operation especially, avoid the impact of pipeline on operation, when work, utilize vacuum generator to make chuck surface produce suction, workpiece is positioned over after sucker upper surface, thereby the laminating of workpiece bottom and chuck surface produces region of no pressure, cause workpiece produce downward power tightly be fitted in chuck surface.
Accompanying drawing explanation
Figure 1 shows that the structural representation of a specific embodiment of the utility model;
Figure 2 shows that the cross section structure schematic diagram shown in Fig. 1.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
As shown in Figure 1, 2, vacuum positioning fixture of the present utility model comprises block sucker 1 and the vacuum generator (not shown) being fixedly connected with work top, described sucker 1 two ends are formed with counter sink 2 to be fixed on work top with screw, on the upper surface of described sucker, be formed with at least one positioning chamber 3, on the sidewall of described sucker, be formed with the through hole 4 being communicated with positioning chamber, described through hole is communicated with the suction hole of vacuum generator by the road, and the steam vent of described vacuum generator is communicated with compressor by the road.Wherein, described positioning chamber can be the arbitrary structures such as positive truncated rectangular pyramids shape, preferably, is provided with cross or cross connected in star to improve vacuum effectiveness on the bottom surface of described positioning chamber.Meanwhile, for ease of picking and placeing of sucker, in described sucker both sides, be also formed with catching groove, utilize catching groove with hand or fixture, sucker to be moved expediently, improve mobile convenience.
The material of sucker of the present utility model can arbitrarily be adjusted the materials such as available aluminium, copper, steel plate or stainless steel according to demand, can not need specific material with existing material, so that the utilization again of waste material, the through hole being communicated with vacuum generator is arranged on to sidepiece convenient operation especially, avoid the impact of pipeline on operation, when work, utilize vacuum generator to make chuck surface produce suction, workpiece is positioned over after sucker upper surface, thereby the laminating of workpiece bottom and chuck surface produces region of no pressure, cause workpiece produce downward power tightly be fitted in chuck surface.
Preferably, described sucker upper surface offers two above even number positioning chambers, the even interval of described positioning chamber is column-row arrangement, each row positioning chamber is corresponding to a through hole, being each positioned at the same positioning chamber listing is together in series by the passage being arranged in sucker disk body, and in the end of through hole, quick plug is set, can make the number of workpiece to be processed and the through hole of a row positioning chamber is wherein communicated with vacuum generator, or wherein after several row or whole through hole series connection, be communicated with vacuum generator, can adapt to well process requirements like this, improve its ease of use.
As further optimization, in described positioning chamber surrounding, be provided with at least two alignment pins 5, described alignment pin is in order to locate workpiece level to be positioned, be that positioning chamber of the present utility model can be according to the difference adjustment of workpiece shape, simultaneously also according to quantity and the position of different workpieces Adjusting Shape pin, utilize the location of pin can prevent that it is offset when vacuum suction, improve the accuracy of location.
Vacuum positioning fixture of the present utility model, clamping is efficient and convenient; When processing sheet or die cavity series products, can effectively reduce the distortion of workpiece; And it is applied widely, can the not adsorbable material of machining disk as aluminium, copper, stainless steel etc., can also adsorb machining of non-metallic material as nylon, plastic cement etc.
The above is only preferred embodiment of the present utility model; it should be noted that; for those skilled in the art; do not departing under the prerequisite of the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.