CN212144861U

CN212144861U - Set cutter for processing external thread

Info

Publication number: CN212144861U
Application number: CN202020534600.7U
Authority: CN
Inventors: 曲振宝; 伍洲雅; 蔡云
Original assignee: Ningbo Gede Precision Tools Co ltd
Current assignee: Ningbo Gede Precision Tools Co ltd
Priority date: 2020-04-13
Filing date: 2020-04-13
Publication date: 2020-12-15
Anticipated expiration: 2030-04-13

Abstract

The utility model discloses a set cutter for processing external thread, which comprises an installation cutter handle and a cutter head connecting piece, wherein the installation cutter handle is internally provided with a heat dissipation through hole, the outer wall of the installation cutter handle is provided with an installation groove, one end of the installation cutter handle is fixedly connected with one end of the cutter head connecting piece, two sides of the cutter head connecting piece are symmetrically provided with plane ports, two ends of the cutter head connecting piece are connected with cambered surfaces, one side of the cambered surfaces is respectively connected with a first cutter head and a second cutter head, the set cutter for processing external thread is connected with the first cutter head and the second cutter head through the cutter head connecting piece, the length of the second cutter head is larger than that of the first cutter head, the first cutter head contacts with a workpiece firstly, the lower end of an external cutting edge rotating at high speed can polish the surface of the workpiece, the surface of the workpiece is ground flat, the step of polishing the external circle, the excircle polishing after the external thread machining is shortened, the working efficiency is improved, and the machining cost is saved.

Description

Set cutter for processing external thread

Technical Field

The utility model relates to an external screw thread processing cutter technical field specifically is a set sword of processing external screw thread.

Background

The thread processing machine has the disadvantages of complex structure and high cost, and because the existing thread processing machine generally has the defect of low precision, safety accidents are easy to happen in the practical use. The prior art discloses an external thread processing machine which comprises a supporting table, wherein a cutter is fixedly connected to the upper end of the supporting table, the rear end of the supporting table is connected with a hydraulic cylinder, and the hydraulic cylinder is connected with a motor; the metal tube fixing device is connected with the motor at the rear end and is controlled to rotate through the motor. The cutter is fixed during processing, a hydraulic cylinder drives a workpiece to axially feed, and a motor drives the workpiece to rotate. The processing machine has the advantages of long time for processing one thread, lower efficiency, simple positioning of the cutter bar, low precision of the processed thread, single treatment of the surface of a workpiece, removal of defects such as burrs and the like, completion of multiple procedures, complex operation, incapability of completing in one step, low working efficiency and high production cost.

Disclosure of Invention

An object of the utility model is to provide a set sword of processing external screw thread has simple structure, facilitates the use, saves manufacturing cost, improves work efficiency's advantage, has solved the problem among the prior art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a set sword of processing external screw thread, includes installation handle of a knife and tool bit connecting piece, the heat dissipation through-hole has been seted up to the inside of installation handle of a knife, has seted up mounting groove on the outer wall of installation handle of a knife, the one end of installation handle of a knife and the one end fixed connection of tool bit connecting piece, the plane mouth has been seted up to the bilateral symmetry of tool bit connecting piece, and the both ends of tool bit connecting piece are connected with the cambered surface end, and one side of cambered surface end is connected with first tool bit and second tool bit respectively, the inboard of first tool bit is provided with first cutting face, and the one corner of first cutting face lower extreme is connected with the screw thread cutting edge, the inboard of second tool bit is equipped with the second cutting face, and.

Preferably, the center of the cutter head connecting piece is provided with a center hole, and the center hole is communicated with the heat dissipation through hole.

Preferably, the length of the second cutter head is larger than that of the first cutter head, and the first cutter head and the second cutter head are respectively positioned on the opposite sides of the two cambered ends.

Preferably, the first cutting surface and the second cutting surface are both inclined plane structures, and the first cutting surface and the second cutting surface are arranged in parallel.

Preferably, the thread cutting edge is a quadrangular pyramid-shaped member, and the outer peripheral cutting edge is a triangular prism-shaped member.

Preferably, the lower end of the second cutter head is provided with a lower inclined surface, and one end of the lower inclined surface close to the outer circle cutting edge is lower than the other side end of the lower inclined surface.

Preferably, chamfer grooves are formed in the ends, close to the tool bit connecting piece, of the first tool bit and the second tool bit, chamfer inclined planes are connected to the upper end and the lower end of each chamfer groove, and the two ends of each chamfer groove are designed to be opened.

Compared with the prior art, the beneficial effects of the utility model are as follows:

this set sword of processing external screw thread, connect first tool bit and second tool bit through the tool bit connecting piece, the length of second tool bit is greater than first tool bit, first tool bit contacts the work piece earlier, the surface of work piece can be polished to the lower extreme of the excircle cutting edge of high-speed rotation, polish the surface of work piece, leave out the step that the work piece excircle was polished, the upper end of excircle cutting edge can be for the work piece deburring after the external screw thread processing, the excircle after the external screw thread processing is shortened is polished, and the work efficiency is improved, the processing cost is saved, first tool bit and second tool bit are located two opposite one sides of cambered surface end respectively, through the centrosymmetric installation, can guarantee that the atress at set sword both ends is even, the stability that the set sword used is improved, the life of extension set sword.

Drawings

FIG. 1 is an overall structure diagram of the present invention;

fig. 2 is a rear view of the present invention;

fig. 3 is a bottom view of the present invention;

FIG. 4 is a diagram of a second embodiment of the present invention;

fig. 5 is a rear view of the second embodiment of the present invention.

In the figure: 1. installing a cutter handle; 11. a heat dissipating through hole; 12. installing a groove; 2. a cutter head connecting piece; 21. a planar port; 22. an arc-surface end; 3. a first cutter head; 31. a first cutting surface; 32. a thread cutting edge; 33. chamfering grooves; 331. chamfering the inclined plane; 4. a second cutter head; 41. a second cutting face; 411. a lateral beveled edge; 42. an outer circle cutting edge; 43. a lower bevel.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The first embodiment is as follows:

referring to fig. 1-3, a trepanning tool for processing external threads comprises a mounting tool shank 1 and a tool bit connecting piece 2, wherein a heat dissipation through hole 11 is formed in the mounting tool shank 1, a center hole is formed in the center of the tool bit connecting piece 2 and is communicated with the heat dissipation through hole 11, the heat dissipation through hole 11 can reduce the overall weight of the mounting tool shank 1, and heat dissipation can be accelerated through the heat dissipation through hole 11, in addition, when the trepanning tool continuously works, when the heat of the mounting tool shank 1 is too large, cooling liquid can be input into the heat dissipation through hole 11 to rapidly cool down the trepanning tool, a mounting groove 12 is formed in the outer wall of the mounting tool shank 1, the mounting groove 12 is used for fixedly mounting the tool shank 1 and can rapidly positioning the mounting tool shank 1, one end of the mounting tool shank 1 is fixedly connected with one end of the tool bit connecting piece 2, planar ports 21 are symmetrically, one side of the cambered surface end 22 is respectively connected with a first cutter head 3 and a second cutter head 4, the length of the second cutter head 4 is larger than that of the first cutter head 3, when the cutting tool works, the first cutter head 3 contacts a workpiece firstly, the excircle cutting edge 42 rotating at high speed can polish the surface of the workpiece, the surface of the workpiece is polished flat, the step of polishing the excircle of the workpiece is omitted, the working efficiency is improved, the first cutter head 3 and the second cutter head 4 are respectively positioned on the opposite sides of the two cambered surface ends 22, when the cutting tool works, the first cutter head 3 and the second cutter head 4 are both contacted with the workpiece, the stress on the two ends of the sleeve cutter can be ensured to be uniform through centrosymmetric installation, the stability of the use of the sleeve cutter is improved, the service life of the sleeve cutter is prolonged, the first cutting surface 31 is arranged on the inner side of the first cutter head 3, one corner at the lower end of the first cutting surface, the top end is sharp, the processing of the external thread can be accelerated, the thread cutting edge 32 is driven by the first tool bit 3 to rotate, the external thread is processed for a workpiece, the inner side of the second tool bit 4 is provided with a second cutting surface 41, the first cutting surface 31 and the second cutting surface 41 are both inclined plane structures, the contact with the workpiece is avoided, the processing resistance of the workpiece can be reduced, the first cutting surface 31 and the second cutting surface 41 are arranged in parallel, the first cutting surface 31 and the second cutting surface 41 respectively support the thread cutting edge 32 and the external cutting edge 42, one side of the second cutting surface 41 is provided with a lateral bevel edge 411, the external cutting edge 42 is fixedly connected to the lateral bevel edge 411, the lateral bevel edge 411 is arranged in an inclined mode, during the operation, the external cutting edge 42 rotates on the surface of the workpiece in a spiral mode, the inclined structure of the external cutting edge 42 can reduce the resistance and improve the smoothness of the operation, the external cutting edge 42 is, the excircle cutting edge 42 is rotatory under the drive of second tool bit 4, before screw thread cutting edge 32 contacts the work piece, polish for the excircle of work piece, when screw thread cutting edge 32 contacts the work piece, and accomplish external screw thread processing back, screw thread cutting edge 32 contacts with the outer wall of work piece once more, polish the excircle of work piece, the burr that will produce in the external screw thread course of working is got rid of, the precision of processing is improved, the lower extreme of second tool bit 4 is provided with down inclined plane 43, the one end that down inclined plane 43 is close to excircle cutting edge 42 is less than the other side of down inclined plane 43, excircle cutting edge 42 is installed in the longest one side of second tool bit 4, guarantee the needs of the working length of excircle cutting edge 42.

The working process is as follows: the installation tool handle 1 is quickly positioned through the installation groove 12, the tool handle 1 is fixedly installed, when in machining, a workpiece is fixed below a sleeve cutter, the installation tool handle 1 is driven by a driving motor to rotate and move downwards, the tool bit connecting piece 2 simultaneously drives the first tool bit 3 and the second tool bit 4 to rotate, the length of the second tool bit 4 is larger than that of the first tool bit 3, the outer circle cutting edge 42 firstly contacts the upper end of the workpiece, the outer circle cutting edge 42 rotating at a high speed can polish the surface of the workpiece and polish the surface of the workpiece flat, the thread cutting edge 32 contacts the upper end of the workpiece along with the pushing of the sleeve cutter to process an external thread for the workpiece, meanwhile, the upper end of the outer circle cutting edge 42 is a workpiece polishing burr with processed external thread, the side inclined edge 411 is obliquely arranged, when in work, the outer circle cutting edge 42 rotates on the surface of the workpiece in a spiral shape, the, after the machining is finished, the sleeve cutter rotates reversely, the thread cutting edge 32 only needs to be screwed out of the machined external thread, and in the process of reverse screwing out, the thread cutting edge 32 can also push the outer circle cutting edge 42 to push out burrs in the external thread.

Example two:

referring to fig. 4-5, in the embodiment, chamfer grooves 33 are formed in ends, close to the tool bit connector 2, of the first tool bit 3 and the second tool bit 4, chamfer slopes 331 are connected to upper and lower ends of the chamfer grooves 33, two ends of the chamfer grooves 33 are open, the chamfer grooves 33 in the upper ends of the first tool bit 3 and the second tool bit 4 are located at the same height, when the chamfer grooves 33 rotate to contact with the upper end of a workpiece, the chamfer grooves 33 grind the upper end of the workpiece to chamfer the upper end of the workpiece, and other structures are the same as those in the first embodiment.

The working process is as follows: the workpiece is fixed below the sleeve cutter, the driving motor drives the installation cutter handle 1 to rotate and move downwards, the cutter head connecting piece 2 simultaneously drives the first cutter head 3 and the second cutter head 4 to rotate, the outer circle cutting edge 42 firstly contacts the upper end of the workpiece, the surface of the workpiece can be polished by the outer circle cutting edge 42 rotating at a high speed, along with the pushing of the sleeve cutter, the thread cutting edge 32 contacts the upper end of the workpiece to process external threads for the workpiece, meanwhile, burrs are polished on the workpiece with the processed external threads at the upper end of the outer circle cutting edge 42, when the chamfer groove 33 rotates to contact with the upper end of the workpiece, the chamfer groove 33 polishes the upper end of the workpiece, the upper end of the workpiece can be chamfered, after the processing is completed, the sleeve cutter rotates reversely, and the thread cutting.

In summary, the following steps: this sleeve cutter of processing external screw thread connects first tool bit 3 and second tool bit 4 through tool bit connecting piece 2, the length of second tool bit 4 is greater than first tool bit 3, first tool bit 3 contacts the work piece earlier, the surface of work piece can be polished to the lower extreme of the excircle cutting edge 42 of high-speed rotation, grind the surface of work piece flat, leave out the step that the work piece excircle was polished, the upper end of excircle cutting edge 42 can be for the work piece deburring after the external screw thread processing, the excircle after the external screw thread processing is shortened is polished, and the work efficiency is improved, and the processing cost is saved, first tool bit 3 and second tool bit 4 are located two opposite sides of cambered surface end 22 respectively, through central symmetry installation, can guarantee that the atress at sleeve cutter both ends is even, improve the stability of sleeve cutter use, the life of extension sleeve cutter.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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

1. The utility model provides a set sword of processing external screw thread, includes installation handle of a knife (1) and tool bit connecting piece (2), its characterized in that: the interior of the installation knife handle (1) is provided with a heat dissipation through hole (11), the outer wall of the installation knife handle (1) is provided with an installation groove (12), one end of the installation knife handle (1) is fixedly connected with one end of the knife head connecting piece (2), plane openings (21) are symmetrically formed in two sides of the tool bit connecting piece (2), two ends of the tool bit connecting piece (2) are connected with arc surface ends (22), one side of each arc surface end (22) is connected with a first tool bit (3) and a second tool bit (4) respectively, a first cutting surface (31) is arranged on the inner side of the first cutter head (3), a thread cutting edge (32) is connected with one corner of the lower end of the first cutting surface (31), the inner side of the second cutter head (4) is provided with a second cutting face (41), one side of the second cutting face (41) is provided with a side bevel edge (411), and an outer circle cutting edge (42) is fixedly connected to the side bevel edge (411).

2. The sleeve cutter for processing the external thread according to claim 1, wherein: the center of the cutter head connecting piece (2) is provided with a center hole, and the center hole is communicated with the heat dissipation through hole (11).

3. The sleeve cutter for processing the external thread according to claim 1, wherein: the length of second tool bit (4) is greater than first tool bit (3), and first tool bit (3) and second tool bit (4) are located two opposite sides of cambered surface end (22) respectively.

4. The sleeve cutter for processing the external thread according to claim 1, wherein: the first cutting face (31) and the second cutting face (41) are both inclined plane structures, and the first cutting face (31) and the second cutting face (41) are arranged in parallel.

5. The sleeve cutter for processing the external thread according to claim 1, wherein: the thread cutting edge (32) is a component in the shape of a quadrangular pyramid, and the outer circle cutting edge (42) is a component in the shape of a triangular prism.

6. The sleeve cutter for processing the external thread according to claim 1, wherein: the lower end of the second tool bit (4) is provided with a lower inclined surface (43), and one end, close to the outer circle cutting edge (42), of the lower inclined surface (43) is lower than the other side end of the lower inclined surface (43).

7. The sleeve cutter for processing the external thread according to claim 1, wherein: chamfer groove (33) have all been seted up to first tool bit (3) and second tool bit (4) one end that is close to tool bit connecting piece (2), and the upper and lower end in chamfer groove (33) all is connected with chamfer inclined plane (331), and the both ends in chamfer groove (33) are the opening design.