CNC machining clamp

Abstract

The utility model belongs to the technical field of clamps, and particularly relates to a CNC machining clamp which comprises a base plate, a pre-positioning assembly, a clamping supporting plate and a clamping assembly. The pre-positioning assembly comprises a pre-positioning supporting plate, a pre-positioning plate and a pre-positioning column. The pre-positioning assembly comprises a pre-positioning supporting plate, a pre-positioning plate and a pre-positioning column. The pre-positioning plate is provided with a pre-positioning hole, one end of the pre-positioning column is arranged in the pre-positioning hole in a penetrating mode and connected with the pre-positioning supporting plate, and the other end of the pre-positioning column extends out of the pre-positioning hole. The clamping assembly comprises a clamping air cylinder, an air cylinder clamping block, a rotary supporting piece, an air cylinder shaft, an upper supporting shaft and a lower supporting shaft. According to the CNC machining clamp, the multiple clamping assemblies are arranged, each clamping air cylinder correspondingly drives one air cylinder clamping block to downwards press the workpiece on the pre-positioning plate, and therefore the multiple air cylinder clamping blocks press the workpiece on the pre-positioning plate at the same time, the workpiece is clamped and not prone to loosening, and the machining precision is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of clamps, and in particular relates to a CNC processing clamp. Background Art

[0002] In mechanical manufacturing, a large number of fixtures are used to complete the required processing procedures, assembly procedures, and inspection procedures. The use of fixtures can improve labor productivity, improve processing accuracy, and reduce waste. At the same time, it can expand the process range of machine tools and improve the working conditions of operation. Therefore, fixtures are an important process equipment in mechanical manufacturing. Machine tool fixtures are a device used to clamp workpieces on machine tools. Their function is to make the workpiece have a correct position relative to the machine tool or tool and keep this position unchanged during the processing. In the automation industry, parts vary in size, and the materials include steel parts, aluminum parts, stainless steel parts, non-metallic parts, etc., with a wide variety. However, the existing CNC machine tool fixtures use a single clamp to clamp the workpiece, which is easy to cause the workpiece to loosen and cannot be clamped, affecting the CNC processing accuracy. Utility Model Content

[0003] The utility model aims to provide a CNC machining fixture, aiming to solve the technical problem in the prior art that the workpiece is easily loosened and cannot be clamped, thereby affecting the CNC machining accuracy.

[0004] To achieve the above-mentioned purpose, the CNC machining fixture provided by the embodiment of the utility model comprises a base plate, a pre-positioning component, a clamping support plate and a clamping component, wherein the pre-positioning component is arranged on the base plate, the clamping support plate is connected to the pre-positioning component, and the clamping component is arranged on the clamping support plate;

[0005] The pre-positioning assembly comprises a pre-positioning support plate, a pre-positioning plate and a pre-positioning column, wherein the pre-positioning support plate is connected to the base plate and to the clamping support plate, the pre-positioning plate is connected to the pre-positioning support plate, the pre-positioning plate is provided with a pre-positioning hole, one end of the pre-positioning column is passed through the pre-positioning hole and connected to the pre-positioning support plate, and the other end extends out of the pre-positioning hole;

[0006] The control wheel that is located at the top and the control wheel that is located at the bottom are provided with the control wheel that is located at the bottom, and the control wheel that is located at the bottom is provided with the control wheel.

[0007] As an optional solution of the present invention, two pre-positioning support plates are provided and are arranged in parallel and opposite to each other, and the two pre-positioning support plates are fixedly connected to the base plate.

[0008] As an optional solution of the utility model, the pre-positioning holes are provided in plurality and are arranged to overlap with the pre-positioning support plate. The pre-positioning posts correspond to the number of the pre-positioning holes and pass through the pre-positioning holes to be fixedly connected to the pre-positioning support plate.

[0009] As an optional solution of the present invention, two clamping support plates are provided and are respectively fixedly connected to the pre-positioning support plates.

[0010] As an optional solution of the present invention, four clamping assemblies are provided, and two clamping assemblies are provided on each clamping support plate.

[0011] As an optional solution of the utility model, one end of each cylinder clamping block is rotatably connected to the clamping cylinder through the cylinder shaft, and the other end extends out of the clamping cylinder and is arranged above the pre-positioning plate.

[0012] The above one or more technical solutions in the CNC machining fixture provided by the embodiment of the utility model have at least one of the following technical effects:

[0013] The CNC machining fixture provided by the present application includes a base plate, a pre-positioning component, a clamping support plate and a clamping component. There are multiple clamping components. By setting up multiple clamping components, each clamping cylinder drives a corresponding cylinder clamping block to press the workpiece on the pre-positioning plate downward, so that multiple cylinder clamping blocks press the workpiece on the pre-positioning plate at the same time, thereby clamping the workpiece and preventing it from loosening, thereby improving the CNC machining accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0015] Figure 1 A schematic structural diagram of a CNC machining fixture provided in an embodiment of the utility model.

[0016] Figure 2 A schematic structural diagram of a clamping assembly of a CNC machining fixture provided in an embodiment of the utility model.

[0017] Figure 3 A diagram showing the use status of a CNC machining fixture provided in an embodiment of the utility model.

[0018] Among them, the reference numerals in the figure are:

[0019] 1. Base plate; 2. Pre-positioning assembly; 3. Clamping support plate; 4. Clamping assembly; 5. Workpiece;

[0020] 21. Pre-positioning support plate; 22. Pre-positioning plate; 23. Pre-positioning column;

[0021] 41. Clamping cylinder; 42. Cylinder clamping block; 43. Rotating support plate; 44. Cylinder shaft; 45. Upper support shaft; 46. Lower support shaft. DETAILED DESCRIPTION

[0022] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0023] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0025] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0026] In one embodiment of the present invention, Figures 1 to 3 As shown, a CNC machining fixture is provided, including a base plate 1, a pre-positioning component 2, a clamping support plate 3 and a clamping component 4, the pre-positioning component 2 is arranged on the base plate 1, the clamping support plate 3 is connected to the pre-positioning component 2, and the clamping component 4 is arranged on the clamping support plate 3.

[0027] The pre-positioning assembly 2 includes a pre-positioning support plate 21, a pre-positioning plate 22 and a pre-positioning column 23. The pre-positioning support plate 21 is fixedly connected to the base plate 1 and fixedly connected to the clamping support plate 3. The pre-positioning plate 22 is fixedly connected to the pre-positioning support plate 21, and the pre-positioning plate 22 is provided with a pre-positioning hole. One end of the pre-positioning column 23 is penetrated in the pre-positioning hole and fixedly connected to the pre-positioning support plate 21, and the other end extends out of the pre-positioning hole. After the workpiece 5 is placed on the pre-positioning plate 22, it is pre-positioned by the pre-positioning column 23, which is convenient for the clamping assembly 4 to clamp.

[0028] The clamping assembly 4 is provided with a plurality of parts, and the clamping assembly 4 includes a clamping cylinder 41, a cylinder clamping block 42, a rotating support sheet 43, a cylinder shaft 44, an upper support shaft 45 and a lower support shaft 46. The clamping cylinder 41 is fixedly connected to the clamping support plate 3 and is arranged on one side of the pre-positioning support plate 21. The cylinder clamping block 42 is fixedly connected to the clamping cylinder 41 and is arranged above the pre-positioning plate 22. There are two rotating support sheets 43, which are respectively arranged on one side of the clamping cylinder 41 and the cylinder clamping block 42. The cylinder shaft 44 is fixedly penetrated through the clamping cylinder 41 and the cylinder clamping block 42 in sequence, and the cylinder clamping block 42 is rotatably connected to the clamping cylinder 41 through the cylinder shaft 44. The upper support shaft 45 is fixedly penetrated through the rotating support sheet 43 and the cylinder clamping block 42 in sequence, and the cylinder clamping block 42 is rotatably connected to the rotating support sheet 43 through the upper support shaft 45. The lower support shaft 46 is fixedly installed in the rotating support sheet 43 and the clamping cylinder 41 in sequence, and the rotating support sheet 43 is rotatably connected with the clamping cylinder 41 through the lower support shaft 46. The piston rod of the clamping cylinder 41 extends to drive the cylinder clamping block 42 to be pushed out, and the cylinder clamping block 42 rotates downward along the cylinder shaft 44. The rotating support sheet 43 drives the cylinder clamping block 42 to move downward synchronously through the upper support shaft 45 and the lower support shaft 46, thereby pressing the workpiece 5 on the pre-positioning plate 22.

[0029] The CNC machining fixture provided in the present application is provided with multiple clamping assemblies 4. By setting up multiple clamping assemblies 4, each clamping cylinder 41 drives a corresponding cylinder clamping block 42 to press the workpiece 5 on the pre-positioning plate 22 downward, so that multiple cylinder clamping blocks 42 press the workpiece 5 on the pre-positioning plate 22 at the same time, thereby clamping the workpiece 5 and preventing it from loosening, thereby improving the CNC machining accuracy.

[0030] In another embodiment of the utility model, the CNC machining fixture has two pre-positioning support plates 21, which are arranged in parallel and opposite to each other, and the two pre-positioning support plates 21 are fixedly connected to the base plate 1. The pre-positioning plate 22 is fixed by providing two pre-positioning support plates 21.

[0031] In another embodiment of the utility model, the CNC machining fixture is provided with a plurality of pre-positioning holes, which are overlapped with the pre-positioning support plate 21. The number of pre-positioning posts 23 corresponds to the number of pre-positioning holes, and passes through the pre-positioning holes and is fixedly connected to the pre-positioning support plate 21. By providing a plurality of pre-positioning posts 23, the workpiece 5 on the pre-positioning plate 22 is pre-positioned.

[0032] In another embodiment of the present invention, the CNC machining fixture is provided with two clamping support plates 3 , which are respectively fixedly connected to the pre-positioning support plate 21 .

[0033] In another embodiment of the utility model, the CNC machining fixture has four clamping assemblies 4, and two clamping assemblies are provided on each clamping support plate 3. By providing four clamping assemblies 4, the workpiece 5 can be clamped better.

[0034] In another embodiment of the utility model, one end of each cylinder clamping block 42 of the CNC machining fixture is rotatably connected to the clamping cylinder 41 through a cylinder shaft 44, and the other end extends out of the clamping cylinder 41 and is arranged above the pre-positioning plate 22, thereby ensuring that the cylinder clamping block 42 can clamp the workpiece 5.

[0035] The CNC machining fixture provided in the present application is equipped with multiple clamping assemblies 4, and each clamping cylinder 41 drives a corresponding cylinder clamping block 42 to press the workpiece 5 on the pre-positioning plate 22 downward, so that multiple cylinder clamping blocks 42 press the workpiece 5 on the pre-positioning plate 22 at the same time, thereby clamping the workpiece 5 and preventing it from loosening, thereby improving the CNC machining accuracy.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A CNC machining fixture, characterized in that: It includes a base plate, a pre-positioning component, a clamping support plate and a clamping component, wherein the pre-positioning component is arranged on the base plate, the clamping support plate is connected to the pre-positioning component, and the clamping component is arranged on the clamping support plate; The pre-positioning assembly comprises a pre-positioning support plate, a pre-positioning plate and a pre-positioning column, wherein the pre-positioning support plate is connected to the base plate and to the clamping support plate, the pre-positioning plate is connected to the pre-positioning support plate, the pre-positioning plate is provided with a pre-positioning hole, one end of the pre-positioning column is passed through the pre-positioning hole and connected to the pre-positioning support plate, and the other end extends out of the pre-positioning hole; The control wheel that is located at the top and the control wheel that is located at the bottom are provided with the control wheel that is located at the bottom, and the control wheel that is located at the bottom is provided with the control wheel.

2. A CNC machining fixture according to claim 1, characterized in that: The pre-positioning support plates are provided with two and are arranged parallel to each other. The two pre-positioning support plates are fixedly connected to the base plate.

3. A CNC machining fixture according to claim 1, characterized in that: The pre-positioning holes are provided in plurality and overlap with the pre-positioning support plate. The pre-positioning posts correspond in number to the pre-positioning holes and pass through the pre-positioning holes to be fixedly connected with the pre-positioning support plate.

4. A CNC machining fixture according to claim 1, characterized in that: The clamping support plates are provided with two and are respectively fixedly connected to the pre-positioning support plates.

5. A CNC machining fixture according to claim 4, characterized in that: There are four clamping assemblies, and two clamping assemblies are arranged on each clamping support plate.

6. A CNC machining fixture according to claim 5, characterized in that: One end of each cylinder clamping block is rotatably connected to the clamping cylinder through the cylinder shaft, and the other end extends out of the clamping cylinder and is arranged above the pre-positioning plate.

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