Vacuum chuck with positioning pin

Abstract

A vacuum suction cup with a positioning pin is composed of a sealing rubber strip and a special vacuum suction cup body. The sealing rubber strip is a solid silicone rubber sealing rubber strip with the diameter of 3mm for the CNC vacuum chuck; an air exhaust channel is arranged in the center of the special vacuum chuck, and an air exhaust pipe connector is led out from the side face and externally connected with a vacuum air exhaust pipeline; an annular groove of 92 mm * 2.5 mm is formed in the special vacuum chuck according to the size of a part; two bosses of 5.1 mm * 3 mm are arranged on the special vacuum chuck according to the position size of a counter bore in the bottom surface of the part; and exhaust grooves are uniformly distributed in the peripheral ring groove and avoid the two positioning bosses. By adopting the special vacuum chuck, the deformation of a processed plastic part caused by milling the plastic part by a conventional clamping method is avoided. Milling machining of the plastic thin-wall part of the newly-researched product is achieved, it is guaranteed that the research task of the newly-researched product is smoothly carried out, and the research progress requirement is met. The milling cutter can be applied to machining of plastic thin-wall parts of other newly-ground products needing to be milled.

Description

Technical Field

[0001] The utility model relates to a vacuum suction cup with a positioning pin, belonging to the technical field of contactor part processing fixtures. Background Art

[0002] A small cap in a contactor, such as Figure 1 As shown, this part has a thin-walled structure as a whole. The part is made of polybutylene terephthalate resin material, brand PBT4310, and the material is PBT4310 plastic. In the new research and development stage of the product, the part is processed by milling method, but due to the material properties and processing methods, a new type of vacuum suction cup needs to be designed. Utility Model Content

[0003] The utility model aims to solve the technical problems of positioning and clamping of thin-walled plastic parts during milling.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A vacuum suction cup with a locating pin consists of a sealing strip and a special vacuum suction cup; the sealing strip is a solid silicone rubber sealing strip with a diameter of ø3mm for CNC vacuum suction cups; an exhaust channel is set at the center of the special vacuum suction cup, and an exhaust pipe interface is led out from the side, and the exhaust pipe interface is connected to an external vacuum exhaust pipeline; a ø92mm×2.5mm ring groove is set on the special vacuum suction cup according to the size of the part blank; two ø5.1mm×3mm bosses are set on the special vacuum suction cup according to the location size of the countersunk hole on the bottom surface of the part; exhaust grooves are evenly distributed in the outer ring groove and avoid the two locating bosses.

[0006] The beneficial effects of adopting the above technical solution are:

[0007] By using this special vacuum suction cup, the utility model avoids the deformation of plastic parts caused by conventional clamping methods during milling. It enables the milling of thin-walled plastic parts of newly developed products, ensuring the smooth progress of new product development tasks and meeting development schedule requirements.

[0008] The utility model can be applied to the processing of other plastic thin-wall parts of newly developed products that require milling processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 A schematic structural diagram of a vacuum suction cup with a positioning pin according to the present invention.

[0010] In the picture: 1-part blank, 2-sealing strip, 3-special vacuum suction cup.

[0011] Figure 2 for Figure 1Schematic diagram of the special vacuum suction cup structure.

[0012] Figure 3 for Figure 2 Top view.

[0013] Figure 4 for Figure 3 Main view.

[0014] Figure 5 for Figure 3 Left view.

[0015] In the figure: 4-exhaust pipe, 5-exhaust pipe interface, 6-ring groove, 7-boss, 8-exhaust groove.

[0016] Figure 6 for Figure 1 Schematic diagram of the part structure after the part blank is processed.

[0017] Figure 7 for Figure 6 Top view.

[0018] Figure 8 for Figure 7 Main view.

[0019] Figure 9 for Figure 7 Left view. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention and are not used to limit the present invention.

[0021] Design of special vacuum suction cup

[0022] Design of special vacuum cup positioning part - such as Figure 2 As shown (dimensions in mm)

[0023] 1) According to the parts drawing, such as Figure 6 As shown in the figure, there are two countersunk holes with a size of 5.1mm + 0.10mm x 3.5mm + 0.10mm on the bottom surface of part 1. This plane and the two countersunk holes serve as the positioning reference for part machining.

[0024] 2) Make your own special vacuum cup 3. Figure 2 As shown,

[0025] The dedicated vacuum suction cup 3 is made of aluminum alloy and has an overall dimension of 100mm×100mm×30mm. An exhaust channel 4 is provided at the center, with an exhaust pipe interface 5 leading out from the side. The exhaust pipe interface 5 is connected to an external vacuum exhaust pipeline. According to the size of the part 1 blank, a ø92mm×2.5mm annular groove 6 is designed, and two ø5.1mm×3mm bosses 7 are machined according to the size of the countersunk position on the bottom surface of the part to position the part blank 1. Exhaust grooves 8 are provided within the outer annular groove 6, avoiding the two positioning bosses 7; the exhaust grooves 8 are evenly distributed, which is conducive to uniform force on the part blank during vacuuming, and the part blank is stably and firmly adsorbed on the vacuum suction cup.

[0026] How to use a special vacuum suction cup - such as Figure 1 shown.

[0027] Place a ø3mm diameter solid silicone rubber sealing strip 2 for CNC vacuum cups in the peripheral ring groove 6. Align the two reference holes on the blank with the two bosses 7 on the dedicated vacuum cup 3. Place the blank steadily on the sealing strip 2. Start the vacuum pump to firmly fix the blank on the dedicated vacuum cup 3. You can then begin milling the part.

[0028] The purpose of this utility model is to simply, stably and reliably clamp the blank of the part and play a positioning role. The utility model designs a vacuum suction cup that can effectively and conveniently perform positioning and clamping of thin-walled resin material parts during the development stage of new products.

Claims

1. A vacuum suction cup with a positioning pin, characterized in that: It consists of two parts: a sealing strip (2) and a special vacuum suction cup (3); the sealing strip (2) is a solid silicone rubber sealing strip with a diameter of ø3mm for a CNC vacuum suction cup; an exhaust channel (4) is set at the center of the special vacuum suction cup (3), and an exhaust pipe interface (5) is led out from the side, and the exhaust pipe interface (5) is externally connected to a vacuum exhaust pipeline; a ø92mm×2.5mm ring groove (6) is set on the special vacuum suction cup (3) according to the size of the part blank (1); two ø5.1mm×3mm bosses (7) are set on the special vacuum suction cup (3) according to the size of the countersunk hole position on the bottom surface of the part; exhaust grooves (8) are evenly distributed in the outer ring groove (6) and avoid the two positioning bosses (7).

2. The vacuum suction cup with positioning pins according to claim 1, characterized in that: The special vacuum suction cup (3) is made of aluminum alloy.

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