CN205870034U - Digit control machine tool special fixture - Google Patents

Abstract

The utility model discloses a digit control machine tool special fixture, including the base, be equipped with the constant head tank on the base, there is the briquetting screw hole on the constant head tank, the briquetting passes through screw connection briquetting screw hole, and the constant head tank lower extreme is fluted, and there is the bridge screw hole constant head tank one side, is equipped with the clamp plate on the clamp plate screw hole. Clamp plate one side is equipped with the cotter hole, installation pin on the cotter hole. Because the pin is installed at the edge of work, can coordinate the constant head tank to play the effect of location, simultaneously the pin also with pressing plate contact, play the positioning action to the clamp plate, can prevent that the clamp plate moves in the course of working, lead to the fact work piece processing to scrap. Briquetting side to one side uses with the constant head tank cooperation, and multiplicable work piece packing force guarantees that the work piece is firm to carry out accurate location to the work piece, make that the work piece is difficult to take place the displacement, improve stability, guarantee the quality of work piece processing, improve product processing qualification rate.

Description

A special fixture for CNC machine tools

technical field

The utility model relates to the field of mechanical processing, in particular to a special fixture for a numerically controlled machine tool.

Background technique

The automobile oil cooler coupling block shown in Figure 1 is clamped by multiple fixtures in the current processing process, and the inner holes and drilled holes are respectively processed on different machine tools. Multiple clamping will easily lead to inaccurate workpiece positioning, resulting in workpiece processing errors. For connecting blocks with high coaxiality requirements, multiple clamping will easily result in scrapped parts. And because the material of the workpiece is soft, the probability of surface defects on the workpiece will increase during multiple clamping processes; and the turnover of the workpiece takes a certain amount of time, and the cutting fluid remaining on the workpiece will cause a certain degree of corrosion on the surface of the workpiece. At the same time, if the management is not good, there may be problems such as missing procedures.

Utility model content

The technical problem to be solved by this utility model: the purpose of this utility model is to solve the deficiencies in the prior art, to provide a one-time clamping, which can be accurately positioned, can improve work efficiency, reduce manual labor, and has strong stability and can A special fixture for CNC machine tools to ensure product quality.

The technical scheme of the utility model: a special clamp for CNC machine tools described in the utility model, including a base, a positioning groove is provided on the base, and there are pressing block screw holes on the positioning groove, and the pressing block is connected with the pressing block screw hole by a screw, and the positioning groove There is a groove at the lower end, a screw hole for a pressing plate is arranged on one side of the positioning groove, a pressing plate is arranged on the threaded hole of the pressing plate, a pin hole is arranged on one side of the pressing plate, and a pin is installed on the pin hole.

Further, the pressing block is trapezoidal, one side is provided with a 60° inclination angle, and one side is vertical.

Further, the pressing plate is L-shaped, and has threaded holes on the top.

Further, the inclination angle of one side of the positioning groove is 60°.

Compared with the prior art, the utility model has the beneficial effect: since the pin is installed on the edge of the workpiece, it can cooperate with the positioning groove to play a positioning role, and at the same time, the pin is also in contact with the pressing plate, which plays a positioning role for the pressing plate, and can prevent the pressing plate during processing. Move, causing workpiece processing to be scrapped. The inclined side of the pressure block is used in conjunction with the positioning groove, which can increase the pressing force of the workpiece, ensure the stability of the workpiece, and accurately position the workpiece, so that the workpiece is not easy to shift, improve the stability, ensure the quality of the workpiece processing, and improve the overall quality. There is a groove at the lower end of the positioning groove, which can facilitate the disassembly of the workpiece, and prevent the tool from touching the fixture during the special control process, causing unnecessary accidents, while improving work efficiency and reducing labor time.

Description of drawings

Fig. 1 is a schematic diagram of a workpiece clamped by a special fixture for a numerically controlled machine tool of the present invention.

Fig. 2 is a structural schematic diagram of a special fixture for a numerically controlled machine tool of the present invention.

Fig. 3 is a front view of the positioning groove structure of a special fixture for a numerically controlled machine tool of the present invention.

detailed description

In order to deepen the understanding of the utility model, we will further describe the utility model in detail below in conjunction with the accompanying drawings. This embodiment is only used to explain the utility model, and does not constitute a limitation to the protection scope of the utility model.

The utility model provides a special fixture for numerical control machine tools, as shown in Figure 2, the fixture is used for clamping and fixing the workpiece 9 shown in Figure 1, which is convenient for processing, can reduce processing procedures, and improve processing efficiency .

Fig. 1, Fig. 2, Fig. 3 have shown the embodiment of a kind of special clamp for numerical control machine tool of the present utility model, a kind of special clamp for numerical control machine tool, comprises base 1, and base 1 mainly plays the role of connection and fixation, and is used for being fixed in numerical control processing on the machine tool. The base 1 is provided with a positioning groove 12, and the positioning groove 12 has a briquetting screw hole 121. The briquetting block 6 is connected to the briquetting screw hole 121 by a screw, and cooperates with the locating groove slope 122 to ensure that the workpiece 9 is positioned accurately. There is a groove 4 at the lower end of the positioning groove 12, which can prevent the base 1 from being damaged when the machine tool is drilling, and facilitate the disassembly of the workpiece 9 after the processing is completed. There are pressing plate screw holes 3 on one side of the positioning groove 12, and the pressing plate 10 is fixed on the pressing plate screw holes by screws for clamping the workpiece 9. One side of the pressure plate 10 is provided with a pin hole 5, and a pin 8 is installed on the pin hole 5, and the two are an interference fit. The pin is close to the workpiece 9 and can be positioned when the workpiece 9 is installed. When the clamping plate 6 clamps the workpiece 9, it can provide support for the clamping plate 6 and prevent the workpiece 9 from being scrapped due to the offset of the splint 6 during the processing.

The working principle of the utility model: during the clamping process, put the workpiece 9 into the positioning groove 12, make the edge of the workpiece close to the pin 8, first fix the pressing block 10 on the pressing block through the pressing block screw 11 along the inclined surface 122 of the positioning groove On the screw hole 121, then the pressing plate 6 is installed, and the pressing plate 6 needs to be close to the pin 8. After the processing is completed, the pressing plate 6 is disassembled first, and then the briquetting block 10 is disassembled. Wherein the groove 4 can increase the contact area of the tail end of the workpiece 9, which is convenient for disassembly.

The utility model has the characteristics of precise positioning, improved work efficiency, reduced labor force, strong stability and guaranteed processing quality. Because the pin 5 can locate the workpiece 9 at a fixed position and provide support for the pressure plate 6, so as to achieve sufficient clamping force without damaging the workpiece 9, so that the processing process can be carried out smoothly, reducing the possibility of displacement of the workpiece 9 during processing, and making the workpiece 9 The position is stable during processing.

The above specific implementation is only to illustrate the technical concept and structural features of the present utility model, and the purpose is to allow relevant persons who are familiar with this technology to implement it accordingly, but the above content does not limit the protection scope of the present utility model. Any equivalent change or modification made by the spirit of the new model should fall within the protection scope of the present utility model.

Claims (4)

1. A special fixture for a numerically controlled machine tool, comprising a base, characterized in that: the base is provided with a positioning groove, a briquetting screw hole is arranged on the locating groove, a briquetting block is placed on the briquetting screw hole, and the positioning There is a groove at the lower end of the groove, and there is a screw hole for a pressure plate on one side of the positioning groove, and a pressure plate is installed on the threaded hole of the pressure plate; one side of the pressure plate is provided with a pin hole, and a pin is installed on the pin hole. 2. A special fixture for CNC machine tools according to claim 1, characterized in that: said pressing block is in the shape of a right-angled trapezoid with a side inclination angle of 60°. 3. A special fixture for numerically controlled machine tools according to claim 1, characterized in that: the pressure plate is L-shaped, with a threaded hole on the top. 4. A special fixture for CNC machine tools according to claim 1, characterized in that: the side inclination angle of the positioning groove is 60°.