Bar internal thread turning tool for numerical control lathe
Technical Field
The application relates to the technical field of internal thread tools, in particular to a bar stock internal thread turning tool for a numerical control lathe.
Background
The numerical control lathe is one of widely used numerical control lathes, is mainly used for cutting machining of inner and outer cylindrical surfaces of shaft parts or disc parts, inner and outer conical surfaces of any cone angle, complex rotation inner and outer curved surfaces, cylindrical threads, conical threads and the like, and can be used for grooving, drilling, reaming, boring and the like, and the internal thread tool is used for fixing a screw tap on a tool rest of the numerical control lathe, fixing a workpiece on a chuck and rotating at a certain rotating speed to realize internal thread cone threads of the workpiece.
In the published patent document with the publication number of CN201799727U, an internal thread processing device for a numerical control lathe is provided, in the internal thread cutting process of the published patent document, a tool rest is fixed, a screw tap is automatically fed, when the processing depth is enough, only a reversing vehicle is needed, the screw tap can be automatically withdrawn, the screw tap can not be broken, and the production efficiency is high, but in the published patent document, a chuck is required to be fixed on an output shaft of a spindle box, when a through hole type internal thread hole is required to be processed, a cutter head is easy to touch when the tool is turned to the innermost part, the screw tap can also pass through a workpiece to touch the output shaft of the spindle box, and the screw tap can not be protected.
Disclosure of utility model
Aiming at the defects of the prior art, the application provides a bar stock internal thread turning tool for a numerical control lathe, overcomes the defects of the prior art and aims at solving the problems in the prior art.
The bar stock internal thread turning tool for the numerical control lathe comprises a numerical control lathe and a three-jaw chuck, wherein a main shaft box and a feeding box are respectively arranged at the top of the numerical control lathe, the three-jaw chuck is fixedly arranged with an output shaft of the main shaft box, a reducing sleeve and a shaft body are arranged in the three-jaw chuck, the shaft body is fixedly arranged at the output shaft end of the main shaft box, one end of the shaft body is provided with a blind hole, one end of the reducing sleeve is positioned in the blind hole, the reducing sleeve is in sliding connection with the blind hole, a mounting piece is fixedly arranged at the tool holder end of the feeding box, and a tap is arranged on one side of the mounting piece.
Through adopting above-mentioned technical scheme, sliding connection between blind hole and the reducing sleeve can transversely adjust the position of reducing sleeve in three-jaw chuck inside, makes the fixed work piece one end of three-jaw chuck and reducing sleeve contact, can control work piece terminal surface degree of depth, and in the screw tap carries out internal thread course of working, can block the output shaft of screw tap touching headstock through reducing sleeve and axis body to play the guard action.
As a preferable technical scheme of the application, one side of the mounting piece is provided with the mounting groove, one end of the tap is fixedly connected with the mounting shaft, the top and the bottom of the mounting groove are symmetrically provided with the sliding grooves, the top and the bottom of the mounting shaft are symmetrically and fixedly connected with the sliding blocks, the mounting shaft is positioned in the mounting groove, the mounting shaft is matched with the mounting groove, the sliding blocks are positioned in the sliding grooves, and the sliding blocks are in sliding connection with the sliding grooves.
Through adopting above-mentioned technical scheme, insert the installation axle to the inside of mounting groove, and make the inside that the slider got into the spout, can accomplish the quick installation of screw tap, convenient to use, when the work piece was cut out the internal thread by the screw tap, because the slip between slider and the spout, make the screw tap can only lateral shifting and unable rotation, can drive the screw tap through the effect of screw thread and continue the screw in work piece.
As a preferable technical scheme of the application, the circle centers of the reducer sleeve and the shaft body and the circle center of the three-jaw chuck are in the same axial direction.
By adopting the technical scheme, the tap is prevented from touching the edges of the reducer sleeve and the shaft body.
As a preferable technical scheme of the application, the diameter of the large caliber part of the reducing sleeve is the same as that of the shaft body.
By adopting the technical scheme, the uniformity of the reducer sleeve and the shaft body is ensured.
As a preferable technical scheme of the application, one side of the chute close to the opening of the mounting groove is provided with an opening.
By adopting the technical scheme, the sliding block is ensured to slide smoothly.
As a preferable technical scheme of the application, the four corners of the bottom of the numerical control machine tool are fixedly provided with the supporting feet, and the bottoms of the supporting feet are provided with the anti-skid pads.
By adopting the technical scheme, the stability of the numerical control machine tool is improved.
The application has the beneficial effects that:
1. The position of the variable-diameter sleeve inside the three-jaw chuck can be transversely adjusted through sliding connection between the blind hole and the variable-diameter sleeve, one end of a workpiece fixed by the three-jaw chuck is in contact with the variable-diameter sleeve, the depth of the end face of the workpiece can be controlled, and in the internal thread machining process of the tap, the tap can be prevented from touching an output shaft of the spindle box through the variable-diameter sleeve and the shaft body, so that the protection effect is achieved.
2. Through inserting the installation axle to the inside of mounting groove, and make the inside that the slider got into the spout, can accomplish the quick installation of screw tap, convenient to use, when the work piece was cut out the internal thread by the screw tap, because the slip between slider and the spout, make the screw tap can only lateral shifting and unable rotation, can drive the screw tap through the effect of screw thread and continue the screw in work piece.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present application;
FIG. 2 is a schematic diagram of a side view of a three-jaw chuck;
FIG. 3 is a schematic view of the structure of the reducer sleeve and shaft of the present application;
FIG. 4 is a schematic view of the tap and mounting of the application.
The numerical control machine tool comprises a numerical control machine tool body 1, a three-jaw chuck 2, a screw tap 3, a mounting piece 4, a main shaft box 5, a feeding box 6, a supporting leg 7, a reducing sleeve 8, a shaft body 9, a blind hole 10, a blind hole 11, a mounting groove 12, a mounting shaft 13, a sliding groove 14 and a sliding block.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Referring to fig. 1-3, the rod skip internal thread tool for the numerically controlled lathe comprises a numerically controlled lathe 1 and a three-jaw chuck 2, wherein a spindle box 5 and a feed box 6 are respectively arranged at the top of the numerically controlled lathe 1, the three-jaw chuck 2 is fixedly installed with an output shaft of the spindle box 5, a reducing sleeve 8 and a shaft body 9 are arranged in the three-jaw chuck 2, the shaft body 9 is fixedly installed at the output shaft end of the spindle box 5, a blind hole 10 is formed in one end of the shaft body 9, one end of the reducing sleeve 8 is positioned in the blind hole 10, the reducing sleeve 8 is in sliding connection with the blind hole 10, a mounting piece 4 is fixedly installed at the tool holder end of the feed box 6, and a tap 3 is arranged on one side of the mounting piece 4.
During the use, through the sliding connection between blind hole 10 and the reducing sleeve 8, can transversely adjust the position of reducing sleeve 8 in three-jaw chuck 2 inside, make the fixed work piece one end of three-jaw chuck 2 and reducing sleeve 8 contact, can control work piece terminal surface degree of depth, and in the screw tap 3 carries out internal thread processing, can block the output shaft of screw tap 3 touching headstock 5 through reducing sleeve 8 and axis body 9 to play the guard action.
Referring to fig. 1 and 4, a mounting groove 11 is formed in one side of the mounting piece 4, a mounting shaft 12 is fixedly connected to one end of the tap 3, sliding grooves 13 are symmetrically formed in the top and bottom of the mounting groove 11, a sliding block 14 is symmetrically and fixedly connected to the top and bottom of the mounting shaft 12, the mounting shaft 12 is located inside the mounting groove 11, the mounting shaft 12 is matched with the mounting groove 11, the sliding block 14 is located inside the sliding groove 13, and the sliding block 14 is slidably connected with the sliding groove 13.
During the use, through inserting the inside of mounting axle 12 to mounting groove 11, and make slider 14 get into the inside of spout 13, can accomplish the quick installation of screw tap 3, convenient to use, when being cut the internal thread by screw tap 3 to the work piece, because the slip between slider 14 and the spout 13 makes screw tap 3 can only lateral shifting and unable rotation, can drive screw tap 3 through the effect of screw thread and continue the screw in work piece.
Referring to fig. 2 and 3, the centers of the reducer sleeve 8 and the shaft body 9 are in the same axial direction as the center of the three-jaw chuck 2. When in use, through the reducing sleeve pipe 8, the shaft body 9 and the three-jaw chuck 2 with the centers of circles in the same axial direction, the tap 3 is prevented from touching the edges of the reducer sleeve 8 and the shaft 9.
Referring to fig. 3, the diameter of the reducer sleeve 8 at the large diameter is the same as the diameter of the shaft body 9. When in use, the uniformity is ensured through the reducer sleeve 8 and the shaft body 9 with the same diameter.
Referring to fig. 4, the side of the chute 13 adjacent to the opening of the installation groove 11 is open. When in use, the slide block 14 can slide smoothly through the open-hole type slide groove 13.
Referring to fig. 1, four corners of the bottom of the numerically-controlled machine tool 1 are fixedly provided with support legs 7, and the bottoms of the support legs 7 are provided with anti-slip pads. When in use, the stability of the numerical control machine tool 1 is increased through the anti-slip pad arranged at the bottom of the supporting leg 7.
The working principle is that in the use process, firstly, the mounting shaft 12 is inserted into the mounting groove 11, the sliding block 14 enters the inside of the sliding groove 13, the tap 3 can be rapidly mounted, then, the position of the reducing sleeve 8 in the three-jaw chuck 2 can be transversely adjusted through sliding connection between the blind hole 10 and the reducing sleeve 8, then, a workpiece needing internal thread processing is fixed through the three-jaw chuck 2, one end of the workpiece fixed through the three-jaw chuck 2 is contacted with the reducing sleeve 8, the depth of the end face of the workpiece can be controlled, in the internal thread processing process of the tap 3, the tap 3 can be prevented from touching an output shaft of the spindle box 5 through the reducing sleeve 8 and the shaft body 9, so that a protective effect is achieved, and the tap 3 can only transversely move and can not rotate due to sliding between the sliding block 14 and the sliding groove 13 when the internal thread is cut out by the tap 3, the tap 3 can be driven to continue to be screwed into the workpiece through the effect of the threads, the internal thread processing of the workpiece is realized, finally, the output shaft of the spindle box 5 is controlled to reversely rotate, and the tap 3 can be withdrawn from the workpiece.
The foregoing description is only a preferred embodiment of the present application, and the present application is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present application has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.