CN216370536U - Special clamp for processing inner hole threads of sheet-shaped special-shaped piece - Google Patents

Abstract

The utility model discloses a special fixture for processing inner hole threads of a sheet special-shaped piece, which comprises a first base, a second base, a third base, a first positioning sample plate, a second positioning sample plate, a third positioning sample plate, a first groove, a second groove and a third groove, wherein the first base is provided with a first positioning hole; first, second and third base with first, second and third location model are connected, first base, second base and third base can form the triangle location to slice profile piece, just the front end of first, second, third location model has been makeed into first recess, second recess and third recess are installed respectively on first base, second base and third base, just the third recess is the arc recess, surround the back and constitute jointly and be used for pressing from both sides tightly the die cavity of piece dress profile piece. The utility model has the advantages that: the clamping is rapid, the working efficiency is high, the labor force of workers is reduced, and the machining error caused by the overall dimension factor is reduced.

Description

A special fixture for thread processing of inner holes of sheet-shaped special-shaped parts

technical field

The utility model belongs to the field of numerical control technology machining, in particular to a thread clamp for a circular hole type part of a special-shaped part.

Background technique

At present, in the field of machining, the thread processing technology of hole-type aluminum parts is very common. As shown in Figure 2, the commonly used aluminum parts processing technology is to fix the aluminum parts to a spindle fixture, and the parts are cut out from the positioning template. The cavities are installed together, and then fixed by the pressure plate. Due to the different shapes of the aluminum parts, some clamping will be relatively tight, and the loading and unloading will be laborious. Then the spindle rotates, and the thread tool is installed on the tool holder to turn the thread.

Because the shape of the workpiece is an aluminum profile, the clamping force needs to be well controlled, otherwise it is easy to cause deformation of the aluminum, and there will be errors in the size due to mistakes.

This method can perfectly complete the processing size and shape and position tolerance requirements of aluminum parts. It only presses the workpiece through multiple pressing plates, and the process is complicated and time-consuming.

Utility model content

In order to overcome the defects existing in the prior art, the purpose of the present invention is to provide a special clamp for thread processing of inner holes of sheet-shaped special-shaped parts, which can save the clamping time to the greatest extent and reduce the labor of workers.

In order to achieve the above-mentioned technical effect, the utility model realizes through the following technical solutions:

A special fixture for thread processing of inner holes of sheet-shaped special-shaped parts, comprising a first base, a second base and a third base, the first, second and third bases are respectively detachably installed on the numerical control on the pneumatic three-jaw of the lathe; the first base and the second base are located above the sheet-shaped special-shaped piece, and the third base is located below the sheet-shaped special-shaped piece; the first and second bases are located and the third base can form triangular positioning for the sheet-shaped profiled part. The pneumatic clamping device controlled by the pneumatic three claws is composed of two buttons, one for loosening and the other for tightening, and the clamping and loosening of the pneumatic three claws are controlled by the buttons. The pressure of the pneumatic three claws should be adjusted so that after the workpiece is processed, it will not deform, and there will be enough clamping force during the processing to prevent the parts from flying out.

Further, the first base is fixed with a first positioning template, the second base is fixed with a second positioning template, and the third base is fixed with a third positioning template, the first positioning template, and the first positioning template. The front edges of the second positioning template and the third positioning template are correspondingly provided with a first groove, a second groove, and a third groove, and the first, second, and third grooves are located in the first, second, and third positions. After the second and third positioning templates are enclosed, they together form a cavity for clamping the sheet-shaped profiled part.

Further, the sheet-shaped profiled part includes a first protrusion and a second protrusion, and the first protrusion and the second protrusion are respectively corresponding to the first groove and the second groove. Cooperate with each other, leaving a gap.

Further, the grooves on the first positioning template, the second positioning template and the third positioning template are in the shape of a first groove, a second groove and a third groove, all of which have a positioning function to achieve Triangular positioning, after clamping it can not move, play a limit function.

The beneficial effects of the present utility model are:

1. Starting from practical application, the present utility model provides a clamp with fast clamping, high labor efficiency, and reduced labor for the operator.

2. In combination with the prior art, the utility model makes a special fixture for thread processing of the inner hole of the sheet-shaped special-shaped part, and cuts out the cavity through the wire cutting technology, so that the sheet-shaped special-shaped part is accommodated, and is placed in the first groove and the hole. There is a gap between the second groove and the special-shaped blank. Its function is to facilitate clamping and taking. It is also to avoid the gap between the machine tool spindle itself and the transmission connection of the pneumatic three-jaw chuck, resulting in machining errors. The clamping device can eliminate the machining error caused by the outer dimension error.

3. The special fixture for thread processing of the inner hole of the sheet-shaped special-shaped part of the present invention has a reasonable overall structure, small occupied space, and good precision effect through a reasonable layout.

The above description is only an overview of the technical solution of the present invention. In order to understand the technical means of the present invention more clearly and implement it according to the content of the description, the following detailed description is given with the embodiments of the present invention and the accompanying drawings. The specific embodiments of the present invention are given in detail by the following examples and accompanying drawings.

Description of drawings

The accompanying drawings described herein are used to provide further understanding of the present invention and constitute a part of the present application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the attached image:

Figure 1 is a schematic structural diagram of a sheet-shaped profiled part.

Fig. 2 is a fixing mechanism of a sheet-shaped profiled part in the prior art.

Fig. 3 is a perspective view of a special fixture for thread processing of inner holes of sheet-shaped special-shaped parts according to the present invention.

Numeral description in the figure: 1. The first positioning template; 2. The second positioning template; 3. The third positioning template 4. The second base; 5. The fixing screw hole; 6. The first groove; 7. The second concave 8. The third groove; 9. The first base; 10. The third base; 11. The sheet-shaped profiled part; 12. The first protrusion; 13. The second protrusion.

Detailed ways

The present utility model will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

The descriptions here are used to provide further understanding of the present invention and constitute a part of the present application. The exemplary embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation of the present invention.

A special fixture for thread processing of inner holes of sheet-shaped special-shaped parts, including a first base 9, a second base 4 and a third base 10, and the first base 9, the second base 4 and the third base. The seat 10 is detachably installed on the pneumatic three claws of the CNC lathe; the first base 9 and the second base 4 are located above the sheet-shaped special-shaped part 11, and the third base 10 is located below the sheet-shaped special-shaped part 11; The first base 9 , the second base 4 and the third base 10 can form a triangular position for the sheet-shaped profiled part 11 .

Further, the first base 9 , the second base 4 and the third base 10 all have through holes for the fixing screws 5 to pass through.

Further, the first base 9 is fixed with the first positioning template 1, the second base 4 is fixed with the second positioning template 2, the third base 10 is fixed with the third positioning template 3, the first positioning template 1, the second positioning template The front ends of the positioning template 2 and the third positioning template 3 are correspondingly provided with a first groove 6, a second groove 7 and a third groove 8, and the first groove 6, the second groove 7, the third groove 8. After the first positioning template 1, the second positioning template 2 and the third positioning template 3 are enclosed together, a cavity for clamping the sheet-shaped profiled part 11 is formed.

Further, before machining the first positioning template 1, the second positioning template 2 and the third positioning template 3, it is necessary to use a boring tool to turn the holes of the three templates to ensure the first positioning template 1, the second positioning template 2 and the third positioning template. The coaxiality between the holes of the three positioning template 3 and the CNC machine tool.

Further, the first base 9 , the second base 4 and the third base 10 are connected with the first positioning template 1 , the second positioning template 2 and the third positioning template 3 through fixing screw holes 5 and screws.

Preferably, the third groove 8 is an arc-shaped groove.

Further, the sheet-shaped profiled part 11 includes a first protrusion 12 and a second protrusion 13, and the first protrusion 12 and the second protrusion 13 cooperate with the corresponding first groove 6 and second groove 7 respectively, And the spacing is greater than or equal to 1mm.

Further, the cavity shapes on the first positioning template 1, the second positioning template 2 and the third positioning template 3 have a first groove 6, a second groove 7, and a third groove 8, so that they cannot be moved and can not be moved. to the limit function.

The working principle of this embodiment is as follows:

First install the pneumatic three-jaw on the chuck on the spindle of the CNC machine tool, connect the first base 9, the second base 4 and the third base 10 to the pneumatic three-jaw with screws through the fixing screw holes, and install the tool to the On the tool seat, turn the holes of the cavity to ensure the coaxiality, and then install the special-shaped blank profiles into the first groove 6, the second groove 7, and the third groove 8 that have been cut. Limit, can not move, press the pneumatic three-jaw clamping button of the machine tool, clamp the shape of the flaky shaped part 11, test whether the pressure is normal, prevent the parts from flying out or the pressure is too large to cause damage to the shape of the parts, the installation and debugging are completed. Machinable parts.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. For those skilled in the art, the present utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims (5)

1. A special fixture for thread processing of inner holes of sheet-shaped special-shaped parts, characterized in that it comprises a first base (9), a second base (4) and a third base (10), wherein the first, The second and third bases (9, 4, 10) are respectively detachably mounted on the pneumatic three jaws of the CNC lathe; the first base (9) and the second base (4) are located in the Above the profiled piece (11), the third base (10) is located below the sheet-shaped profiled piece (11); the first, second and third bases (9, 4, 10) can The sheet-shaped profiled parts (11) form triangular positioning. 2. The special fixture for thread processing of the inner hole of the sheet-shaped special-shaped part according to claim 1, characterized in that: the first base (9) is fixed with a first positioning template (1), and the second base is (4) A second positioning template (2) is fixed, the third base (10) is fixed with a third positioning template (3), the first positioning template (1), the second positioning template (2) ) corresponding to the front edge of the third positioning template (3) is provided with a first groove (6), a second groove (7) and a third groove (8), the first, second and After the first, second and third positioning templates (1, 2, 3) are enclosed, the third grooves (6, 7, 8) together form a shape for clamping the sheet-shaped profiled part (11). cavity. 3. The special fixture for thread processing of the inner hole of the sheet-shaped special-shaped part according to claim 2, characterized in that: the third groove (8) is an arc-shaped groove. 4. The special clamp for thread processing of inner holes of sheet-shaped special-shaped parts according to claim 2, characterized in that: the sheet-shaped special-shaped parts (11) comprise a first protrusion (12) and a second protrusion (13) , the first protrusions (12) and the second protrusions (13) cooperate with the corresponding first grooves and the second grooves (6, 7) respectively, and leave a gap. 5. The special clamp for thread processing of the inner hole of the sheet-shaped special-shaped part according to claim 4, characterized in that: the gap is greater than or equal to 1mm.

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