CN209887169U - A pneumatic clamping device for machining workpieces by CNC machine tools - Google Patents

Abstract

The utility model belongs to the technical field of CNC machine tool clamping devices, and in particular relates to a pneumatic clamping device for CNC machine tools to process workpieces. Holding plate, a fixed clamping plate is fixed on the base located between the first moving clamping plate and the second moving clamping plate, a cylinder is connected between the cylinder fixing plate and the first moving clamping plate, and the cylinder fixing plate and A connecting rod is fixedly connected between the second movable clamping plates, the first clamping station is between the first movable clamping plate and the fixed clamping plate, and the second clamping station is between the second movable clamping plate and the fixed clamping plate. Two clamping stations, the first moving clamping plate and the second moving clamping plate are respectively provided with limiting parts on the side away from the fixed clamping plate. The utility model provides a pneumatic clamping device for machining workpieces by a numerical control machine tool, which has a double-station design, simple structure, low cost and small volume.

Description

A pneumatic clamping device for machining workpieces by CNC machine tools

technical field

The utility model belongs to the technical field of CNC machine tool clamping devices, in particular to a pneumatic clamping device for CNC machine tools to process workpieces.

Background technique

In the machining process, in order to ensure the machining accuracy, the workpiece is fixed so that it occupies a certain position to accept the processing or inspection process equipment as the clamping device of the machine tool.

With the development of science and technology and the continuous improvement of productivity, the machine tools in the existing market are generally CNC machine tools, and CNC machine tools are generally equipped with automatic clamping devices. The existing automatic clamping devices are mostly hydraulic clamping devices and pneumatic clamping devices. Two, the pneumatic clamping device has the characteristics of lower cost compared with the hydraulic clamping device, and its market share is gradually increasing.

In the process of machining, CNC machine tools can process two workpieces at the same time in order to improve efficiency. However, the existing pneumatic clamping devices for workpieces processed by CNC machine tools lack a dual-station pneumatic clamping device with simple structure, low cost and small volume. device.

Utility model content

The purpose of the utility model is to provide a pneumatic clamping device for machining workpieces by a numerically controlled machine tool, which has a double-station design, simple structure, low cost and small volume.

In order to achieve the above-mentioned technical purpose, the technical scheme of the present utility model:

A pneumatic clamping device for machining workpieces by a numerically controlled machine tool, comprising a base, on which a cylinder fixing plate, a first moving clamping plate and a second moving clamping plate are sequentially slidably arranged, and the first moving clamping plate is located on the first moving clamping plate. A fixed clamping plate is fixed on the base between the second moving clamping plate and the cylinder fixing plate, a cylinder is connected between the cylinder fixing plate and the first moving clamping plate, and the cylinder fixing plate and the second moving clamping plate are connected with a cylinder. A connecting rod is fixedly connected between the holding plates, a first clamping station is located between the first moving clamping plate and the fixed clamping plate, and the second moving clamping plate and the fixed clamping plate are In between is the second clamping station.

Limiting components are respectively provided on the sides of the first moving clamping plate and the second moving clamping plate away from the fixed clamping plate.

As a further improved solution, the base and the cylinder fixing plate, the first moving clamping plate, and the second moving clamping plate are dovetail groove sliding fit, the base is provided with a dovetail groove boss, and the cylinder The fixed plate, the first moving clamping plate and the second moving clamping plate are respectively provided with grooves of dovetail grooves.

As a further improved solution, two connecting rods are provided, and the connecting rods are provided on both sides of the dovetail groove of the cylinder fixing plate and the second moving clamping plate.

As a further improved solution, the stroke of the cylinder is greater than the sum of the maximum clamping distance of the first clamping station and the maximum clamping distance of the second clamping station.

As a further improved solution, the limit component is a limit block, and the limit block is provided on the boss of the base through bolts.

As a further improved solution, strip-shaped grooves are respectively provided on the clamping surfaces of the first moving clamping plate, the second moving clamping plate and the fixed clamping plate.

Due to adopting the above-mentioned technical scheme, the beneficial effects of the present utility model:

When clamping the workpiece, the piston rod of the cylinder extends outwards, the cylinder drives the first moving clamping plate to move toward the fixed clamping plate to clamp the workpiece on the first clamping station, and the cylinder drives the cylinder fixing plate at the same time. The cylinder fixing plate drives the second movable clamping plate to move towards the fixed clamping plate through the connecting rod to realize the clamping of the workpiece on the second clamping station. When the workpiece needs to be removed, the piston rod of the cylinder is retracted, and the cylinder drives the first clamping plate. Moving the clamping plate away from the fixed clamping plate realizes the separation of the workpiece from the first clamping station, and the cylinder drives the second moving clamping plate away from the fixed clamping plate through the cylinder fixing plate to realize the separation of the workpiece and the first clamping station, The limiting member prevents the cylinder from only driving the first moving clamping plate or the second moving clamping plate to move. When one of the first moving clamping plate or the second moving clamping plate reaches the adjacent limiting member When in position, the cylinder drives another clamping plate to move to complete the disassembly of the workpieces on the two stations.

Description of drawings

Fig. 1 is the front view structure schematic diagram of the pneumatic clamping device of the numerical control machine tool processing workpiece of the present embodiment;

Fig. 2 is the side view structure schematic diagram of the pneumatic clamping device of the numerical control machine tool processing workpiece of the present embodiment;

FIG. 3 is a schematic structural diagram of the fixed clamping plate in this embodiment;

In the drawings, 1-base, 2-cylinder fixing plate, 3-first moving clamping plate, 4-second moving clamping plate, 5-fixed clamping plate, 6-air cylinder, 7-connecting rod, 8- The first clamping station, 9-the second clamping station, 10-limiting part, 11-strip groove.

Detailed ways

The present utility model will be further described below in conjunction with specific embodiments. Among them, the accompanying drawings are only used for exemplary description, and represent only schematic diagrams, not physical drawings, and should not be construed as restrictions on this patent; in order to better illustrate the embodiments of the present utility model, some parts of the accompanying drawings will be omitted. , enlargement or reduction, do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the accompanying drawings may be omitted.

The same or similar symbols in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms "upper", "lower", "left", " The orientation or positional relationship indicated by "right" and the like is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, It is constructed and operated in a specific orientation, so the terms describing the positional relationship in the accompanying drawings are only used for exemplary illustration, and should not be construed as a limitation on this patent. specific meaning.

As shown in Figures 1 to 3, a pneumatic clamping device for machining workpieces by a CNC machine tool includes a base 1, and a cylinder fixing plate 2, a first moving clamping plate 3 and a second moving clamp are slidingly arranged on the base 1 in sequence. Holding plate 4, a fixed clamping plate 5 is fixed on the base 1 between the first moving clamping plate 3 and the second moving clamping plate 4, and the cylinder fixing plate 2 and the first moving clamping plate 3 are connected There is a cylinder 6, a connecting rod 7 is fixedly connected between the cylinder fixing plate 2 and the second moving clamping plate 4, and a first clamping station 8 is between the first moving clamping plate 3 and the fixed clamping plate 5, Between the two movable clamping plates 4 and the fixed clamping plate 5 is a second clamping station 9 .

Limiting members 10 are respectively provided on the sides of the first moving clamping plate 3 and the second moving clamping plate 4 away from the fixed clamping plate 5 .

When clamping the workpiece, the piston rod of the cylinder 6 extends outward, and the cylinder 6 drives the first movable clamping plate 3 to move toward the fixed clamping plate 5 to clamp the workpiece on the first clamping station 8. At the same time, the cylinder fixing plate 2 is driven, and the cylinder fixing plate 2 drives the second movable clamping plate 4 to move toward the fixed clamping plate 5 through the connecting rod 7 to realize the clamping of the workpiece on the second clamping station 9, and the workpiece needs to be removed. When the piston rod of the cylinder 6 is retracted, the cylinder 6 drives the first movable clamping plate 3 away from the fixed clamping plate 5 to separate the workpiece from the first clamping station 8, and the cylinder 6 drives the second movable clamping plate through the cylinder fixing plate 2 The holding plate 4 is far away from the fixed clamping plate 5 to realize the separation of the workpiece from the first clamping station 8, and the limiting member 10 is used to prevent the cylinder 6 from only driving the first moving clamping plate 3 or the second moving clamping plate 4 to move. When one of the first moving clamping plate 3 or the second moving clamping plate 4 reaches the position of the adjacent limiting member 10, the cylinder 6 drives the other clamping plate to move, so as to complete the clamping of the workpieces on the two stations. disassemble.

In this embodiment, the base 1 and the cylinder fixing plate 2, the first movable clamping plate 3, and the second movable clamping plate 4 are slidingly matched with dovetail grooves. The base 1 is provided with a boss with a dovetail groove. The first movable clamping plate 3 and the second movable clamping plate 4 are respectively provided with grooves of dovetail grooves, and the connection is stable and the reliability is good.

In this embodiment, two connecting rods 7 are provided, and the connecting rods 7 are provided on both sides of the dovetail grooves of the cylinder fixing plate 2 and the second moving clamping plate 4, and the connecting rods 7 slide through the first moving clamping plate 4. Plate 3, the traction connection is stable.

In this embodiment, the stroke distance of the cylinder 6 is greater than the sum of the maximum clamping distance of the first clamping station 8 and the maximum clamping distance of the second clamping station 9, so that the first clamping station 8 and the second clamping station The clamping station 9 is capable of clamping smaller workpieces.

In this embodiment, the limiting member 10 is a limiting block, and the limiting block is arranged on the boss of the base 1 through bolts, and the structure is simple and stable.

In this embodiment, strip grooves 11 are respectively provided on the clamping surfaces of the first movable clamping plate 3, the second movable clamping plate 4 and the fixed clamping plate 5. Grooves enhance stability for round workpiece clamping.

The utility model provides a pneumatic clamping device for machining workpieces by a numerical control machine tool, which has a double-station design, simple structure, low cost and small volume.

The specific embodiments of the present invention described above do not limit the protection scope of the present invention. Any other corresponding changes and deformations made according to the technical concept of the present invention shall be included in the protection scope of the claims of the present invention.

Claims (6)

1. A pneumatic clamping device for machining a workpiece by a CNC machine tool, characterized in that it comprises a base on which a cylinder fixing plate, a first moving clamping plate and a second moving clamping plate are slid successively and are located in the described base. A fixed clamping plate is fixed on the base between the first moving clamping plate and the second moving clamping plate, a cylinder is connected between the cylinder fixing plate and the first moving clamping plate, and the cylinder is fixed A connecting rod is fixedly connected between the plate and the second moving clamping plate, the first clamping station is between the first moving clamping plate and the fixed clamping plate, and the second moving clamping plate and the Between the fixed clamping plates is a second clamping station; Limiting components are respectively provided on the sides of the first moving clamping plate and the second moving clamping plate away from the fixed clamping plate. 2 . The pneumatic clamping device for machining workpieces by CNC machine tools according to claim 1 , wherein the base, the cylinder fixing plate, the first movable clamping plate and the second movable clamping plate are dovetail grooves. 3 . For sliding fit, the base is provided with a boss of a dovetail groove, and the cylinder fixing plate, the first moving clamping plate and the second moving clamping plate are respectively provided with grooves of the dovetail groove. 3 . The pneumatic clamping device for machining workpieces by CNC machine tools according to claim 2 , wherein two connecting rods are provided, and the connecting rods are provided on the cylinder fixing plate and the second moving clamping plate. 4 . the sides of the dovetail groove. 4. The pneumatic clamping device for CNC machine tool processing workpieces according to claim 1, 2 or 3, wherein the stroke of the cylinder is greater than the maximum clamping distance of the first clamping station and the second clamping distance The sum of the maximum clamping distances of the stations. 5 . The pneumatic clamping device for machining workpieces by a CNC machine tool according to claim 4 , wherein the limiting member is a limiting block, and the limiting block is arranged on the boss of the base through bolts. 6 . 6 . The pneumatic clamping device for machining workpieces by a numerically controlled machine tool according to claim 5 , wherein the clamping surfaces of the first movable clamping plate, the second movable clamping plate and the fixed clamping plate are respectively provided with 6 . There are strip grooves.

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