CN203887591U - Clamp structure - Google Patents

Abstract

The utility model discloses a fixture structure, which clamps a step-shaped workpiece with a rectangular groove and a semicircular groove. The fixture structure is set on a CNC milling machine. The structure includes: a base, which has a top surface, a bottom surface, and a left side surface , the right side, the front and the back, the top surface is provided with a workpiece groove, and the workpiece is clamped in the workpiece groove; gaskets are respectively arranged on the bottom surface, the left side, the right side, the front and the Rear side; set screw with one end fastened to said spacer and the other end free. With the above structure, a step-shaped workpiece with rectangular grooves and semicircular grooves can be obtained through CNC milling. It can be seen that the above steps save the on-site meter calibration time, and the processing efficiency is high; there is no need to use the wire cutting process, and the processing cost is low; there is no need to use a special tool, which reduces the processing cost brought by the tool.

Description

Fixture structure

【Technical field】

The utility model relates to the field of machining, in particular to a fixture structure used in machining.

【Background technique】

Please refer to FIG. 1 , which is a schematic diagram of a workpiece structure. As shown in the figure, the workpiece 101 can be processed by a rectangular block, the workpiece 101 is basically in the shape of a step, one of the opposite sides of the workpiece 101 has a rectangular groove 102, and the other opposite side of the workpiece 101 A semicircular groove 103 is opened on the side.

To process the above-mentioned workpiece 101 in the prior art, a CNC numerical control milling machine can be used to process the rectangular block at first to mill out the step shape, and then the rectangular groove 102 can be processed by the wire cutting process. For the semicircular groove 103, a special Tool for processing. The use of the above process requires a number of different manufacturing processes, so on-site meter calibration is required.

It can be seen that the processing method of the prior art has the following disadvantages: wasting the time for on-site meter calibration and low processing efficiency; wire cutting process is used in processing, and the processing cost is high; special cutting tools are required, which increases the processing cost of the cutting tool.

In view of this, it is necessary to develop a fixture structure to solve the above problems.

【Content of invention】

Therefore, the purpose of this utility model is to provide a fixture structure to solve the following problems in existing mechanical processing of step-shaped workpieces with rectangular grooves and semicircular grooves: waste of on-site calibration time and low processing efficiency ; The wire cutting process is used during processing, and the processing cost is high; special tools need to be used, which increases the processing cost of the tool.

In order to achieve the above object, the fixture structure provided by the utility model clamps a step-shaped workpiece with a rectangular groove and a semicircular groove. The fixture structure is arranged on a CNC milling machine, and the structure includes:

The base has a top surface, a bottom surface, a left side, a right side, a front surface and a back surface, the top surface is provided with a workpiece groove, and the workpiece is clamped in the workpiece groove;

gaskets, which are respectively arranged on the bottom surface, left side, right side, front side and back side;

One end of the positioning screw is fixed to the spacer, and the other end is a free end.

Optionally, a fixing screw is provided on one side of the workpiece groove, and the fixing screw penetrates from one side of the workpiece groove to fix the workpiece.

Compared with the prior art, the fixture structure of the utility model is used to fix the workpiece in the workpiece groove on the top surface of the base during processing, and then perform the following steps on the CNC milling machine: the bottom surface is passed through the positioning screw The free end of the workpiece is positioned on an air pressure base, the gasket is adsorbed on the air pressure base, and the workpiece is processed to obtain a step shape; then the free end of the positioning screw on the right side of the base is replaced Positioned on the air pressure base, the gasket is adsorbed on the air pressure base, the left side of the workpiece is processed to obtain the rectangular groove, and the left side of the base will be replaced in the same way and the position on the right side, process the rectangular groove on the right side of the workpiece; then change the free end of the positioning screw on the back of the base to the air pressure base, and the gasket is adsorbed on the air pressure base seat, the front of the workpiece is processed to obtain the semicircular groove, and the positions of the front and back of the base are exchanged in the same way to process the semicircular groove on the back of the workpiece. Through the milling process described above, a step-shaped workpiece having rectangular grooves and semicircular grooves can be obtained. It can be seen that the above steps save time for on-site meter calibration and high processing efficiency; no need to use wire cutting process, low processing cost; no need to use special tools, reducing the processing cost brought by the tool.

【Description of drawings】

FIG. 1 is a schematic diagram of a workpiece structure.

Fig. 2 is a schematic diagram of the first processing state of a preferred embodiment of the centering fixture structure of the present invention.

FIG. 3 is a schematic diagram of the exploded structure of FIG. 2 .

Fig. 4 is a schematic diagram of a second processing state of a preferred embodiment of the centering fixture structure of the present invention.

Fig. 5 is a schematic diagram of a third processing state of a preferred embodiment of the centering fixture structure of the present invention.

【Detailed ways】

Please refer to FIG. 2 and FIG. 3 together. FIG. 2 is a schematic diagram of the first processing state of a preferred embodiment of the centering fixture structure of the present invention, and FIG. 3 is a schematic diagram of the exploded structure of FIG. 2 .

The fixture structure provided by the utility model clamps a stepped workpiece 101 with a rectangular groove 102 and a semicircular groove 103 (in order to facilitate understanding of the processed parts of the workpiece 101 in Fig. The workpiece 101), the fixture structure is located on the CNC milling machine, the structure includes:

The base 104 has a top surface, a bottom surface, a left side, a right side, a front surface and a back surface, the top surface is provided with a workpiece groove 105, and the workpiece 101 is clamped in the workpiece groove 105;

Spacers 106, which are respectively arranged on the bottom surface, left side, right side, front and back;

One end of the positioning screw 107 is fixed to the washer 106, and the other end is a free end.

Wherein, one side of the workpiece groove 105 may also be provided with a fixing screw 108 , and the fixing screw 108 penetrates from the workpiece groove 105 side to fix the workpiece 101 .

During processing, the workpiece 101 (the blank is a cuboid block) is fixed in the workpiece groove 105 on the top surface of the base 104, and then the processing of the following steps is carried out on the CNC milling machine: the bottom surface is positioned at the bottom surface by the free end of the set screw 107 On an air pressure base (not shown), the gasket 106 is adsorbed on the air pressure base, and the workpiece 101 is processed to obtain a stepped shape.

Please refer to FIG. 4 again. FIG. 4 is a schematic view of the second processing state of a preferred embodiment of the centering fixture structure of the present invention.

Afterwards, the free end of the positioning screw 107 on the right side of the base 104 is replaced and positioned on the air pressure base, and the gasket 106 is adsorbed on the air pressure base, and the left side of the workpiece 101 is fixed. To process to obtain the rectangular groove 102, the positions of the left side and the right side of the base 104 will be exchanged in the same manner, and the rectangular groove 102 on the right side of the workpiece 101 will be obtained by processing;

Please refer to FIG. 5 again. FIG. 5 is a schematic diagram of a third processing state of a preferred embodiment of the centering fixture structure of the present invention.

Afterwards, the free end of the positioning screw 107 on the back of the base 104 is replaced and positioned on the air pressure base, the gasket 106 is adsorbed on the air pressure base, and the front of the workpiece 101 is processed to obtain the For the semicircular groove 103 , the positions of the front and back of the base 104 will be exchanged in the same manner to process the semicircular groove 103 on the back of the workpiece 101 .

Through the milling process described above, a stepped workpiece 101 having a rectangular groove 102 and a semicircular groove 103 can be obtained. It can be seen that the above steps save time for on-site meter calibration and high processing efficiency; no need to use wire cutting process, low processing cost; no need to use special tools, reducing the processing cost brought by the tool.

Claims (2)

1. a clamp structure, clamps the step shape workpiece with rectangular channel and semi-circular groove, and described clamp structure is located at CNC milling machine, it is characterized in that, this structure comprises:

Pedestal, it has end face, bottom surface, left surface, right flank, front and the back side, offers workpiece groove on described end face, workpiece described in clamping in described workpiece groove;

Pad, it is located at respectively described bottom surface, left surface, right flank, front and the back side;

Set screw, described pad is fixed in its one end, and the other end is free end.

2. clamp structure as claimed in claim 1, is characterized in that, described workpiece groove one side is provided with fixed screw, and described fixed screw penetrates fixing described workpiece by described workpiece groove one side.