CN218135253U - Suction Cup Fixtures for CNC Milling Machines - Google Patents

Abstract

The utility model provides a sucker type fixture for a numerically controlled milling machine, which comprises a workbench, on which a first vacuum pump and a second vacuum pump are arranged, on which a plurality of branch pipes are arranged, and the upper ends of all the branch pipes All are equipped with vacuum suction cups for absorbing flat plate parts. The disk surfaces of all the vacuum suction cups are located on the same plane. The lower ends of some branch pipes are connected with the first vacuum pump to form negative pressure, and the lower ends of the remaining branch pipes are connected with the second vacuum pump to form negative pressure. When in use, you can first start the first vacuum pump and only use part of the vacuum suction cups to absorb and fix the plate parts, and eliminate the skew error when placed by suction. At this time, the suction is small and will not cause damage to the skewed plate parts. When the plate After the positioning of the parts is completed, start the second vacuum pump to further fix the flat parts. At this time, since the flat parts have been fixed, the large suction force will not cause excessive deformation of the flat parts.

Description

Suction Cup Fixtures for CNC Milling Machines

technical field

The utility model relates to the technical field of process equipment, in particular to a sucker type clamp for a numerically controlled milling machine.

Background technique

With the rapid development of social production and science and technology, mechanical products are becoming more and more sophisticated and frequently modified, especially for mechanical parts required in aerospace, shipbuilding, military and other fields, which require high precision, complex shapes, and small batches. Processing such products requires frequent modification or adjustment of equipment, and ordinary machine tools or highly specialized automatic machine tools can no longer meet these requirements. In order to solve the above problems, a new type of machine tool - CNC machine tool came into being. This new type of machine tool has the advantages of strong adaptability, high processing precision, stable processing quality and high production efficiency. It comprehensively applies the technological achievements in many aspects such as electronic computer, automatic control, servo drive, precision measurement and new mechanical structure, and is the development direction of CNC machine tools in the future. Some CNC machine tools come with vacuum flexible fixtures, which are expensive. Although automation and telex control capabilities are realized, it is still necessary to call the part digital model to generate the milling fixture surface when using it. Therefore, the time-consuming cycle is long, which in turn affects the processing efficiency and processing cost.

Chinese patent CN110039345A discloses a flexible fixture platform for milling and cutting of gantry-type five-coordinate sheet metal CNC milling machine. Slide rails, suction cup bases, pole supports, poles, vacuum suction cups and transverse slide rail grooves; the fixed base is placed on the five-coordinate machine tool platform, with two transverse slide rail grooves with dimension marking lines and multiple There is a longitudinal slide bar with dimension markings, the longitudinal slide bar is installed on the groove of the horizontal slide rail; the longitudinal slide rail is installed on the longitudinal slide bar; the suction cup base is installed on the longitudinal slide rail; On the base of the suction cup; the rod is screwed into the threaded through hole of the rod support, which can move vertically up and down; the vacuum suction cup is fixed on the top of the rod, and can be fixed at any angle by 360-degree swing, which is used to tightly absorb the shape of the part to be milled. Install pins at the central suction holes of two of the vacuum suction cups, use the pins to determine the accurate spatial orientation of the parts, and the remaining vacuum suction cups are used to absorb the parts. However, it uses the same air source to control the suction of the vacuum chuck, and its solution is suitable for parts with complex curved surfaces. For flat parts, if the parts are fragile and there is a skew when the parts are placed, the excessive adsorption force generated by all the vacuum suction cups at the same time is very likely to cause a large deformation of the flat parts in an instant. It is very easy to cause plastic deformation or fragmentation of flat parts. If the adsorption force is too small, the parts will loosen and the processing position will be shifted during milling, which will also lead to the scrapping of parts.

Utility model content

The purpose of the utility model is to provide a sucker-type clamp for a numerically controlled milling machine, which can attract relatively fragile flat parts, and the attracting force can be adjusted in sections.

In order to realize the above-mentioned technical purpose, the utility model has adopted the following technical solutions:

A suction cup fixture for a CNC milling machine, comprising a workbench, on which a first vacuum pump and a second vacuum pump are arranged, on which a plurality of branch pipes are arranged, and the upper ends of all the branch pipes are provided with For the vacuum suction cup of the flat part, all the surfaces of the vacuum suction cups are located on the same plane, the lower ends of some branch pipes are connected with the first vacuum pump to form a negative pressure, and the lower ends of the remaining branch pipes are connected with the second vacuum pump to form a negative pressure.

In the above solution, the first vacuum pump can be started first when using, and only part of the vacuum suction cups can be used to absorb and fix the flat parts, and the skew error during placement can be eliminated through suction. At this time, the suction is small and will not cause damage to the skewed flat parts. Damage, when the positioning of the flat parts is completed, start the second vacuum pump to further fix the flat parts. At this time, because the flat parts have been fixed, the larger suction force will not cause excessive deformation of the flat parts. At the same time, the magnitude of the suction force can also meet the fixing force requirements when the flat parts are milled. The table can be fixed directly on the milling machine for clamping work.

Preferably, the workbench includes a base plate arranged horizontally, vertical plates extending downward are respectively provided at both ends of the base plate, support plates arranged horizontally are respectively provided at the lower ends of the two vertical plates, and the branch pipes and vacuum chucks are disposed on the upper surface of the substrate. When the flat parts are placed on the station, the vacuum suction cup will suck the flat parts tightly. The clamping forces of the first vacuum pump and the second vacuum pump are both N, fully meeting the safe clamping force required by the workpiece processing; using the first vacuum pump and the second vacuum pump as the power source to realize the suction cup clamping not only reduces the auxiliary installation time , and greatly reduce the labor intensity.

Preferably, the first vacuum pump and the second vacuum pump are respectively arranged on the upper surfaces of the two support plates.

Preferably, there are four branch pipes communicating with the first vacuum pump, and the connecting lines of the four branch pipes form a rectangle.

Preferably, there are three branch pipes communicating with the second vacuum pump located in the middle of the rectangle, and the branch pipes communicating with the second vacuum pump are evenly spaced along the length direction of the rectangle.

As a preference, two rubber strip-shaped pads are arranged on the upper surface of the substrate, the length direction of the rubber strip-shaped pads is parallel to the edge length direction of one end of the substrate, and the branch pipe and the vacuum suction cup are arranged on the two rubber strip-shaped pads. between pads.

Preferably, the upper surface of the substrate is provided with positioning pins for positioning the flat parts.

Description of drawings

Fig. 1 is a schematic diagram of the three-dimensional structure of the utility model;

Explanation of reference signs: 1, flat parts; 10, workbench; 11, base plate; 12, vertical plate; 13, support plate; 20, first vacuum pump; 30, second vacuum pump; 40, branch pipe; 50, vacuum Suction cup; 60, rubber strip pad; 70, positioning pin.

detailed description

In order to make the above purpose, features and advantages of the utility model more obvious and easy to understand, specific embodiments of the utility model will be described in detail below in conjunction with the accompanying drawings.

In the description of the present utility model, it should be noted that the orientations or positional relationships indicated by the terms "bottom", "outside", "front and rear", "up and down" are based on the orientations or positional relationships shown in the accompanying drawings, only It is for the convenience of describing the utility model and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the utility model.

In the description of the present utility model, it should be noted that unless otherwise specified and limited, the term "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection ; It can be directly connected, or indirectly connected through an intermediary, and can be internally connected between two elements. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model in specific situations.

A suction cup type fixture for a numerical control milling machine, comprising a workbench 10, a first vacuum pump 20 and a second vacuum pump 30 are arranged on the workbench 10, a plurality of branch pipes 40 are arranged on the workbench 10, and all the branch pipes 40 The upper ends of each are provided with vacuum chucks 50 for absorbing flat parts 1, the disk surfaces of all the vacuum chucks 50 are located on the same plane, the lower ends of some branch pipes 40 communicate with the first vacuum pump 20 to form a negative pressure, and the lower ends of the remaining branch pipes 40 are connected to the first vacuum pump 20. The second vacuum pump 30 is connected to form a negative pressure.

In the above-mentioned solution, the first vacuum pump 20 can be started first and only part of the vacuum suction cup 50 can be used to absorb and fix the flat plate part 1, and the skew error during placement can be eliminated by the suction force. Component 1 causes damage. After the positioning of the flat component 1 is completed, start the second vacuum pump 30 to further fix the flat component 1. At this time, since the flat component 1 has been fixed, the larger suction will not make the flat Component 1 undergoes excessive deformation. At the same time, the magnitude of the suction force can also meet the requirement of the fixing force when the flat part 1 is milled. The workbench 10 can be directly fixed on the milling machine for clamping operation. After the flat part 1 is placed on the station, the vacuum suction cup 50 will suck the flat part 1 tightly. The clamping forces of the first vacuum pump 20 and the second vacuum pump 30 are both 600N, fully meeting the safe clamping force required for workpiece processing; using the first vacuum pump 20 and the second vacuum pump 30 as the power source to realize the clamping of the suction cup not only reduces The auxiliary installation time is reduced, and the labor intensity is greatly reduced.

Preferably, the workbench 10 includes a horizontally arranged base plate 11, vertical plates 12 extending downward are respectively provided at both ends of the base plate 11, and horizontally arranged supports are respectively provided at the lower ends of the two vertical plates 12. The plate 13 , the branch pipe 40 and the vacuum chuck 50 are disposed on the upper surface of the base plate 11 . When in use, the support plate 13 is connected with the numerical control machine tool, so that the base plate 11 can be suspended in the air, and it is convenient to arrange the ventilation pipeline under the base plate 11 .

Preferably, the first vacuum pump 20 and the second vacuum pump 30 are respectively arranged on the upper surfaces of the two support plates 13 . Because the two support plates 13 are connected with the CNC machine tool, they are relatively stable, so the first vacuum pump 20 and the second vacuum pump 30 are arranged on it to avoid vibration offset of the CNC machine tool due to the start of the vacuum pump.

Preferably, four branch pipes 40 communicating with the first vacuum pump 20 are provided, and the lines connecting the four branch pipes 40 form a rectangle. In this way, the four sides of the flat part 1 can be adsorbed by the four branch pipes 40 to avoid damage to the part due to stress concentration.

Preferably, three branch pipes 40 communicating with the second vacuum pump 30 are provided and located in the middle of the rectangle, and the branch pipes 40 communicating with the second vacuum pump 30 are evenly spaced along the length direction of the rectangle. Since the processing position is generally located in the middle of the flat part 1 , the three branch pipes 40 arranged in this way can fix the middle part of the flat part 1 .

As preferably, two rubber strip pads 60 are arranged on the upper surface of the substrate 11, the length direction of the rubber strip pads 60 is parallel to the length direction of the edge of one end of the substrate 11, and the branch pipe 40 and the vacuum chuck 50 are arranged Between two rubber strip pads 60 . When the vacuum pump is not started, the flat part 1 can be placed on the two rubber strip pads 60 first.

Preferably, the upper surface of the base plate 11 is provided with a positioning pin 70 for positioning the flat component 1 . The positioning pins 70 are located on both sides of the base plate 11; there are four positioning pins 70, which can cooperate with the positioning holes on the flat component 1, so as to realize the positioning of the workpiece. It can also abut against the edge of the flat part 1 to realize positioning.

The suction cup fixture has a simple structure and is easy to operate, and the workpiece can be accurately fixed on the workbench through the vacuum suction cup 50 and the positioning pin 70, which not only improves production efficiency but also reduces labor intensity, and has high application value.

Although the present disclosure is disclosed as above, the protection scope of the present disclosure is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure, and these changes and modifications will all fall within the protection scope of the present utility model.

Claims (7)

1. The utility model provides a sucking disc formula anchor clamps of numerically controlled fraise machine, includes workstation (10), its characterized in that: be provided with first vacuum pump (20) and second vacuum pump (30) on workstation (10), be provided with a plurality of branch pipes (40) on workstation (10), all the upper end of branch pipe (40) all is provided with vacuum chuck (50) that are used for adsorbing dull and stereotyped spare part (1), all the quotation of vacuum chuck (50) is located the coplanar, and the lower extreme and the first vacuum pump (20) intercommunication of part branch pipe (40) form the negative pressure, and the lower extreme and the second vacuum pump (30) intercommunication of all the other branch pipes (40) form the negative pressure.

2. The suction cup type clamp of the numerically controlled milling machine according to claim 1, wherein: the workbench (10) comprises a base plate (11) which is horizontally arranged, two ends of the base plate (11) are respectively provided with vertical plates (12) which extend downwards, the lower ends of the two vertical plates (12) are respectively provided with a support plate (13) which is horizontally arranged, and the branch pipe (40) and the vacuum sucker (50) are arranged on the upper surface of the base plate (11).

3. The suction cup type clamp of the numerically controlled milling machine according to claim 2, wherein: the first vacuum pump (20) and the second vacuum pump (30) are respectively arranged on the upper surfaces of the two support plates (13).

4. The suction cup type clamp of the numerically controlled milling machine according to claim 3, wherein: four branch pipes (40) communicated with the first vacuum pump (20) are arranged, and the connecting lines of the four branch pipes (40) surround a rectangle.

5. The suction cup type jig of a numerically controlled milling machine according to claim 4, wherein: three branch pipes (40) communicated with the second vacuum pump (30) are arranged in the middle of the rectangle, and the branch pipes (40) communicated with the second vacuum pump (30) are uniformly arranged at intervals along the length direction of the rectangle.

6. The suction cup type clamp of a numerically controlled milling machine according to claim 2, 3, 4 or 5, wherein: the upper surface of base plate (11) is provided with two rubber strip pads (60), the length direction of rubber strip pad (60) is on a parallel with the border length direction of the one end of base plate (11), branch pipe (40) and vacuum chuck (50) set up between two rubber strip pads (60).

7. The numerically controlled milling machine suction cup type jig according to claim 2, 3, 4 or 5, wherein: and the upper surface of the substrate (11) is provided with a positioning pin (70) for positioning the flat plate part (1).

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