CN217991187U - Internal and external thread machining device for machining part - Google Patents

Abstract

The utility model provides an inside and outside screw thread processingequipment of machining part, include: the clamping mechanism comprises a clamp body and a plurality of groups of clamping mechanisms which are arranged through a machine tool main shaft or a machine tool jaw; a boss for mounting a workpiece is arranged on the first end face of the fixture body, a circle of inner side screw holes are uniformly distributed on the surface of the boss, and a circle of outer side screw holes are uniformly distributed on the first end face of the fixture body; the number of the inner side screw holes is the same as that of the outer side screw holes; the clamping mechanism is matched with the inner side screw hole or the outer side screw hole; the clamping mechanism comprises a first stud, a second stud, a first supporting stud, a second supporting stud, a pressing plate and a nut; when the workpiece is subjected to internal thread machining, the workpiece is fixed by adopting a first stud, a first support stud, a pressing plate and a nut; and when the workpiece is subjected to external thread machining, fixing the workpiece by adopting a second double-ended stud, a second support stud, a pressing plate and a nut.

Description

Internal and external thread machining device for machining part

Technical Field

The utility model relates to a machining device technical field, in particular to machining part's interior external thread processingequipment.

Background

The processing of internal and external threads on a workpiece requires that the workpiece is clamped and fixed firstly, then internal threads are processed in an inner hole of the workpiece through a cutter, and external threads are processed on the outer wall of the workpiece. When the thread machining device in the prior art carries out internal thread and external thread machining clamping and fixing on a disc sleeve type workpiece with a large diameter and a thin wall, the external wall of the workpiece is clamped by the clamping jaws, the internal thread of an inner hole is machined firstly, the clamping jaws are loosened and taken down after the internal thread machining is finished, then the inner hole of the workpiece is clamped in a reverse grabbing mode, and the external wall is machined at the moment. However, this approach has certain drawbacks: errors exist in the two positioning installation processes, and the coaxiality between the internal thread of the inner hole and the external thread of the outer wall cannot be guaranteed; in addition, the jack catch directly clamps the inner hole or the outer wall of the workpiece, which easily causes the deformation of the workpiece, influences the coaxiality and easily damages the workpiece.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an interior external screw thread processingequipment of machining part for the fixed unable problem of guaranteeing axiality and work piece deformation that exists of work piece in solving interior external screw thread processing.

In order to achieve the above purpose, the utility model adopts the following technical proposal:

the utility model provides an inside and outside screw thread processingequipment of machining part, a serial communication port, include: the fixture comprises a machine tool main shaft and a machine tool jaw which are arranged on a machine tool body, a fixture body which is arranged on the machine tool body through the machine tool main shaft or the machine tool jaw, and a plurality of groups of clamping mechanisms which are used for installing a part to be machined on the fixture body; the fixture body is of a disc-shaped structure and is provided with a first end face for mounting the clamping mechanism and a second end face for being matched with a machine tool spindle or a machine tool jaw for mounting; the first end face is provided with a boss for mounting a part to be processed, the surface of the boss is uniformly provided with a circle of inner screw holes in an annular array relative to the axis of the fixture body, and the first end face is uniformly provided with a circle of outer screw holes in an annular array relative to the axis of the fixture body; the number of the inner side screw holes is the same as that of the outer side screw holes, and the number n is more than or equal to 3; the number of the clamping mechanisms is n, and each group of clamping mechanisms comprises a first stud, a second stud, a first support stud, a second support stud, a pressing plate and a nut; the pressing plate is used for pressing the end surface of the workpiece and is provided with a pressing plate through hole and a pressing plate screw hole; when a workpiece is internally threaded, a first end part of a first stud penetrates through the through hole of the pressing plate and is in threaded connection with the nut, a second end part of the first stud is in threaded connection with the outer side screw hole, a first end part of a first support stud is in threaded connection with the screw hole of the pressing plate, and a second end part of the first support stud is in contact and abutted with a first end surface of the fixture body; when a workpiece is subjected to external thread machining, the first end part of the second stud penetrates through the through hole of the pressing plate and is in threaded connection with the nut, the second end part of the second stud is in threaded connection with the inner side screw hole, the first end part of the second support stud is in threaded connection with the screw hole of the pressing plate, and the second end part of the second support stud is in contact and abutted with the surface of the boss.

Further, the utility model provides an in the internal and external screw thread processingequipment of machining part, can also have such characteristic: wherein, the one end border of clamp plate sets up to buckle protruding structure, and all clamp plates cooperate through buckling protruding structure and carry out spacing fixed to treating the part of processing.

Further, the utility model provides an in the internal and external screw thread processingequipment of machining part, can also have such characteristic: the first double-headed stud and the second double-headed stud are provided with screw grooves on the end surfaces of the first ends.

Further, the utility model provides an in the internal and external screw thread machining device of machining part, can also have such characteristic: the end faces of the first end parts of the first support stud and the second support stud are provided with screw grooves.

Further, the utility model provides an in the internal and external screw thread processingequipment of machining part, can also have such characteristic: and the second ends of the first support stud and the second support stud are arranged into spherical structures.

Further, the utility model provides an in the internal and external screw thread processingequipment of machining part, can also have such characteristic: the nut is a spherical nut, and the pressing plate is provided with a cambered surface groove matched with the spherical nut in the peripheral area of the through hole of the pressing plate.

Further, the utility model provides an in the internal and external screw thread processingequipment of machining part, can also have such characteristic: the end part of the machine tool spindle is sequentially provided with a positioning structure and an external thread; the fixture body is provided with a main shaft connecting hole on the second end face, the main shaft connecting hole is sequentially divided into a positioning hole section and a threaded hole section from the second end face to the inner side, the positioning hole section is matched with a positioning structure of the machine tool main shaft, and the threaded hole section is matched with external threads of the machine tool main shaft.

The utility model discloses an effect and effect:

1) The utility model provides an inside and outside screw thread processingequipment of machining part has the anchor clamps body and multiunit fixture, and the work piece switches to the external screw thread course of working from the internal thread processing, and the fixed position of work piece on anchor clamps is unchangeable, and the work piece is in all the time by fixed clamping state, avoids the repeated positioning installation error.

2) The workpiece is pressed on the end face of the workpiece through the actual pressure of the pressing plate, so that the workpiece is fixedly mounted on the clamp body in a limiting manner, the clamping mechanism cannot directly apply force to the inner hole and the outer wall of the workpiece, and the problem that the workpiece is scrapped due to deformation and over-tolerance is solved.

3) The utility model discloses an interior external screw thread processingequipment has guaranteed the axiality requirement, has saved the high axiality of complicacy and the degree of difficulty and has measured the detection means for the follow-up quality testing step of work piece.

Drawings

Fig. 1 is a three-dimensional structural view (internal thread machining state) of an internal and external thread machining apparatus for a machine-processed part according to an embodiment of the present invention;

FIG. 2 is a top view of FIG. 1 (machine tool jaws not shown);

FIG. 3 is a cross-sectional view of FIG. 2 at section H-H;

fig. 4 is a three-dimensional structural view (external thread machining state) of the internal and external thread machining apparatus for a machined part according to an embodiment of the present invention;

FIG. 5 is a top view of FIG. 4 (machine tool jaws not shown);

FIG. 6 is a cross-sectional view of FIG. 4 at section G-G;

fig. 7 is a schematic view of the fixture body installed in cooperation with the spindle of the machine tool in the embodiment of the present invention;

FIG. 8 is a schematic view of the embodiment of the present invention, in which the clamp body is installed in cooperation with the machine tool jaws;

fig. 9 is a schematic view illustrating a connection condition of the first stud, the first support stud, the pressing plate, and the nut according to the embodiment of the present invention.

Reference numerals: a machine tool spindle 1; a positioning structure 11; external threads 12 of the machine spindle; a machine tool claw 2; a clamp body 3; a boss 31; a workpiece mounting ring groove 311; an inside screw hole 32; an outer screw hole 33; a locating hole section 34; a threaded bore section 35; a communication hole 36; a clamping mechanism 4; a first stud 41; a second stud 41'; a screw groove 41a; a first end 411; a first end portion 412; a first support stud 42; a second support stud 42'; a screw groove 42a; a first end 421; a second end 422; a pressing plate 43; a platen through hole 431; a platen screw hole 432; bending the convex structure 433; a nut 44; a workpiece 5; the internal thread 5a of the workpiece; the external thread 5b of the workpiece.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the following embodiments are specifically illustrated with reference to the accompanying drawings.

< example >

Referring to fig. 1 to 8, the present embodiment provides an internal and external thread processing apparatus for machining a part. The device is arranged on a machine tool body (not shown), and is suitable for machining internal and external threads of a disc sleeve part with a larger diameter and a thinner wall. This internal and external thread processingequipment of machining part includes: the machine tool comprises a machine tool spindle 1, machine tool jaws 2, a clamp body 3 and a clamping mechanism 4. The machine tool spindle 1 and the machine tool claw 2 are installed on the machine tool body in a conventional installation mode. The fixture body 3 is arranged on the machine tool body through a machine tool spindle 1 or a machine tool claw 2. A part to be machined (hereinafter referred to as a workpiece) is mounted on the fixture body 3 through a plurality of sets of clamping mechanisms 4.

The fixture body 3 is in a disc-shaped structure, and the disc-shaped structure is provided with a first end face and a second end face which are opposite. The first end face is used for mounting the clamping mechanism 4 and the workpiece. The second end surface is matched and installed with a machine tool spindle 1 or a machine tool claw 2.

As shown in fig. 3, the first end surface of the fixture body 3 has a boss 31 for mounting a workpiece, a workpiece mounting ring groove 311 is formed in an outer edge position of the surface of the boss 31, and the workpiece is fitted on the boss 31 through the workpiece mounting ring groove 31. Referring to fig. 1 to 3, a circle of inner screw holes 32 are uniformly distributed on the surface of the boss 31 in an annular array around the axis of the fixture body. Referring to fig. 4 to 6, a circle of outer screw holes 33 are uniformly distributed on the first end surface in an annular array about the axis of the fixture body. The number of the inner screw holes 32 is the same as that of the outer screw holes 33, the number n is more than or equal to 3, the number n can be set to 3-6, and the number n is preferably 4. In the present embodiment, as shown in fig. 1 to 6, four inside screw holes 32 and four outside screw holes 33 are provided, and each inside screw hole 32 is located on the same radius as one outside screw hole 33.

As shown in fig. 7, the second end surface of the chuck body 3 is provided with a spindle connection hole, and the first end surface of the chuck body 3 is provided with a communication hole 36, which is communicated with the communication hole 36. The main shaft connection hole is divided into a positioning hole section 34 and a threaded hole section 35 in sequence from the second end surface to the inner side. The end part of the machine tool spindle 1 is sequentially provided with a positioning structure 11 and an external thread 12, the fixture body 3 is connected with the machine tool spindle 1 in an inserting mode through a spindle connecting hole, a positioning hole section is matched with the positioning structure of the machine tool spindle 1, and a threaded hole section is matched with the external thread of the machine tool spindle 1 to achieve threaded connection and fixation.

The clamp body 3 can be mounted on the machine tool body by means of the machine tool spindle 1 or the machine tool jaws 2. The clamp body 3 and the machine tool jaws 2 are mounted as shown in fig. 1, 4 and 8, and the machine tool jaws 2 are matched, clamped and clamped on the outer wall of the clamp body 3.

The number of the gripping mechanisms 4 is four. Each set of clamping mechanisms includes a first stud 41, a second stud 41', a first support stud 42, a second support stud 42', a pressure plate 43, and a nut 44. Referring to fig. 1 to 3, when a workpiece is internally threaded, the workpiece is pressed and fixed by the first stud 41, the first support stud 42, the pressing plate 43, and the nut 44 of the clamping mechanism. Referring to fig. 4 to 6, when the workpiece is externally threaded, the workpiece is pressed and fixed by the second stud 41 'of the clamping mechanism, the second support stud 42', the pressing plate 43, and the nut 44.

The pressing plate 43 is used for pressing on the end face of the workpiece, and as shown in fig. 9, the pressing plate 43 is provided with a pressing plate through hole 431 and a pressing plate screw hole 432. The edge of the pressing plate 43 close to the pressing plate through hole 431 is provided with a bent convex structure 433. All the pressing plates 43 of the four groups of clamping mechanisms 4 are matched with each other through bent convex structures to limit and fix the end faces of the workpieces. The surface of the bending protrusion 433 is a cambered surface.

Fig. 1 to 3 and 9 show the connection of the first stud 41, the first support stud 42, the pressure plate 43 and the nut 44. Referring to FIG. 9, the first end 411 and the second end 412 of the first stud 41 are each externally threaded. The first end 411 of the first stud extends through the platen through hole 431 and is threadedly coupled to the nut 44. Referring to FIG. 3, the second end 412 of the first stud 41 is threadedly coupled to the outboard threaded bore 33. The nut 44 is a spherical nut, and in the present embodiment, a hexagonal spherical nut is used as the nut 44. The pressing plate 43 is provided with a cambered groove matched with the spherical nut in the peripheral area of the pressing plate through hole 431. The first end 421 of the first support stud 42 is provided with an external thread, and the first end 421 of the first support stud is in threaded connection with the pressing plate screw hole 432. The second end 422 of the first support stud is provided with a spherical structure, and the second end 422 of the first support stud is contacted and abutted with the first end surface of the fixture body 3 to provide support.

Fig. 4 to 6 illustrate the connection of the second stud 41', the second support stud 42', the pressure plate 43, and the nut 44. The second stud 41' differs from the first stud 41 in that: the first stud 41 is longer, and the length difference between the first stud and the second stud is matched with the size of the surface of the boss protruding out of the second end face of the fixture body. The second support stud 42' differs from the first support stud 42 in that: the first support stud 42 is longer, and the length difference between the first support stud and the second support stud is matched with the size of the surface of the boss protruding out of the second end face of the fixture body. When a workpiece is subjected to external thread machining, the first end of the second stud 41 'penetrates through the pressing plate through hole 431 and is in threaded connection with the nut 44, the second end of the second stud 41' is in threaded connection with the inner side screw hole 32, the first end of the second support stud 42 'is in threaded connection with the pressing plate screw hole 432, and the second end of the second support stud 42' is in contact with and abuts against the surface of the boss to provide support.

Further, screw grooves (screw grooves 41a of the first stud 41 are illustrated in fig. 9) are opened in end faces of the first ends of the first stud 41 and the second stud 41'. Screw grooves 42a (the screw grooves 42a of the first support studs 42 are illustrated in fig. 9) are formed in the end surfaces of the first ends of the first support studs 42 and the second support studs 42'. The screw grooves of the stud and the support stud can be selected from any one of conventional screw grooves such as a cross groove, a straight groove, a square hole groove, a hexagonal groove, a triangular groove and the like, in the embodiment, a straight groove is adopted, and the straight groove can be matched with a straight screwdriver to operate.

The internal and external thread processing device of the machined part of the embodiment works as follows: the clamp body 4 is arranged on a machine tool spindle 1 or a machine tool claw 2. When a workpiece needs to be processed with internal threads, as shown in fig. 1 to 3, the first stud 41, the first support stud 42, the pressing plate 43 and the nut 44 of all four groups of clamping mechanisms are matched with the outer side screw hole 33 for installation, so as to clamp the outer wall of the workpiece, and fig. 3 illustrates the internal threads 5a processed in the inner hole of the workpiece. Then, before the workpiece is processed with external threads, the following operations are required: the first stud 41, the first support stud 42, the pressure plate 43 and the nut 44 of one of the clamping mechanisms are detached from the outer screw hole 33, and then the first stud 41 is replaced by the second stud 41', and the second support stud 42' is installed at the position of the inner screw hole 32 in place of the first support stud 42 and matched with the pressure plate 43 and the nut 44. And then completing the position switching of all clamping mechanisms, changing the first stud 41 and the first support stud 42 of the clamping mechanisms, and switching and installing the second stud 41 'and the second support stud 42' in the inner side screw hole 32, so as to clamp the inner hole of the workpiece as shown in fig. 4 to 6. Then, the external thread machining of the workpiece is performed, and fig. 6 illustrates the external thread 5b machined on the outer wall of the workpiece. In the process of switching the processing of the internal thread of the workpiece to the processing of the external thread, the fixed position of the workpiece on the clamp is unchanged, so that the problem of low coaxiality caused by errors in secondary positioning is avoided; meanwhile, the clamping jaw of the machine tool can not directly clamp the workpiece, the workpiece is arranged on the clamp body, force can not be directly applied to the inner hole and the outer wall of the workpiece, and the problem of workpiece deformation is avoided.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. The utility model provides an inside and outside screw thread processingequipment of machining part which characterized in that includes: the clamping mechanism comprises a machine tool spindle and a machine tool jaw which are arranged on a machine tool body, a fixture body which is arranged on the machine tool body through the machine tool spindle or the machine tool jaw, and a plurality of groups of clamping mechanisms which are used for installing a workpiece on the fixture body;

the fixture body is of a disc-shaped structure and is provided with a first end face for mounting the clamping mechanism and a second end face for being matched with a machine tool spindle or a machine tool claw;

the first end face is provided with a boss for installing a workpiece, the surface of the boss is uniformly provided with a circle of inner side screw holes in an annular array relative to the axis of the fixture body, and the first end face is uniformly provided with a circle of outer side screw holes in an annular array relative to the axis of the fixture body;

the number of the inner side screw holes is the same as that of the outer side screw holes, and the number n is more than or equal to 3;

the number of the clamping mechanisms is n, and each clamping mechanism comprises a first stud, a second stud, a first support stud, a second support stud, a pressing plate and a nut;

the pressing plate is used for pressing the end face of the workpiece and is provided with a pressing plate through hole and a pressing plate screw hole;

when the workpiece is subjected to internal thread machining, the first end part of the first stud penetrates through the through hole of the pressing plate and is in threaded connection with the nut, the second end part of the first stud is in threaded connection with the screw hole at the outer side, the first end part of the first support stud is in threaded connection with the screw hole of the pressing plate, and the second end part of the first support stud is in contact with and abuts against the first end surface of the clamp body;

when the workpiece is subjected to external thread machining, the first end part of the second stud penetrates through the pressing plate through hole and is in threaded connection with the nut, the second end part of the second stud is in threaded connection with the inner side screw hole, the first end part of the second support stud is in threaded connection with the pressing plate screw hole, and the second end part of the second support stud is in contact and abutted with the surface of the boss.

2. The internal and external thread processing apparatus for machining parts according to claim 1, wherein:

the edge of one end of each pressing plate is provided with a bending protruding structure, and all the pressing plates are matched with the bending protruding structures to limit and fix the workpiece.

3. The internal and external thread processing apparatus for machining parts according to claim 1, wherein:

the first stud and the second stud are provided with screw grooves on the end surfaces of the first ends.

4. The internal and external thread processing apparatus for machining parts according to claim 1, wherein:

the first end part of the first support stud and the first end part of the second support stud are provided with screw grooves.

5. The internal and external thread processing apparatus for machining parts according to claim 1, wherein:

and the second ends of the first support stud and the second support stud are arranged into spherical structures.

6. The internal and external thread processing apparatus for machining parts according to claim 1, wherein:

the nut is a spherical nut, and the pressing plate is provided with a cambered surface groove matched with the spherical nut in the peripheral area of the pressing plate through hole.

7. The internal and external thread processing apparatus for machining parts according to claim 1, wherein:

the end part of the machine tool spindle is sequentially provided with a positioning structure and an external thread;

the fixture body is provided with a main shaft connecting hole on the second end surface, the main shaft connecting hole is sequentially divided into a positioning hole section and a threaded hole section from the second end surface to the inner side, the positioning hole section is matched with a positioning structure of the machine tool main shaft, and the threaded hole section is matched with an external thread of the machine tool main shaft.

Images