CN111804966A

CN111804966A - Transformer stay groove cutter

Info

Publication number: CN111804966A
Application number: CN202010697844.1A
Authority: CN
Inventors: 王晓方
Original assignee: Jiangxi Rongren Power Equipment Co ltd
Current assignee: Jiangxi Rongren Power Equipment Co ltd
Priority date: 2020-07-20
Filing date: 2020-07-20
Publication date: 2020-10-23

Abstract

A groove cutting tool for supporting strips of a transformer belongs to the field of transformer production and comprises a cutter shaft, a cutting edge, a clamping ring and a pressing part, wherein the cutting edge is installed on the cutter shaft and can rotate on the cutter shaft, the clamping ring is installed on the cutter shaft, the angle of the cutting edge is locked, and the pressing part is installed on the cutter shaft and locks the clamping ring on the cutter shaft. The cutter shaft comprises a cutter handle, a threaded area and a single lug, the uppermost end of the cutter shaft is the cutter handle, the cutter handle is upwards connected with a main shaft of the milling machine, the threaded area is arranged in the middle of the cutter shaft, the single lug is arranged at the lower end of the cutter shaft, and a cutting edge is arranged on the single lug. The cutting edge includes ears, card, blade, boss and draw-in groove, and ears and monaural butt joint, the quantity of cutting edge corresponds with the quantity of monaural. The clamping ring comprises a clamping ring surface, a central hole, a clamping ring, a circular groove and a circular truncated cone, wherein the central hole is formed in the middle of the clamping ring surface, the size of the central hole is equal to that of the major diameter of the threaded area, and the central hole is sleeved on the threaded area. The clamping part is installed above the clamping ring and comprises a positive nut and a negative nut, and the positive nut and the negative nut are installed on the threaded area through threads.

Description

Transformer stay groove cutter

Technical Field

The invention belongs to the technical field of transformer production, and particularly relates to a stay groove cutter for a transformer.

Background

The stay is a commonly used supporting piece and an insulating piece in the transformer, the most common operation in the stay manufacturing process is stay groove milling, and under different conditions, the angle of the groove is different according to different stay installation positions, so a series of multiple cutters with various angles are generally required to be equipped in the industry at present to realize milling of different groove angles. At present, an angle-adjustable groove milling cutter is not applied to stay milling.

Disclosure of Invention

The invention provides a transformer stay groove cutter, which aims to solve the problems in the background technology.

The technical problem solved by the invention is realized by adopting the following technical scheme:

a transformer stay groove cutting tool comprises a cutter shaft, a cutting edge, a clamping ring and a pressing part, wherein the cutting edge is installed on the cutter shaft and can rotate on the cutter shaft, the clamping ring is installed on the cutter shaft, the angle of the cutting edge is locked, and the pressing part is installed on the cutter shaft and locks the clamping ring on the cutter shaft. The arbor includes handle of a knife, screw thread district and monaural, and the top of arbor is the handle of a knife, and the handle of a knife upwards connects the main shaft of milling machinery, and the arbor middle part has the screw thread district, and the installation compresses tightly the portion on the screw thread district, and the arbor lower extreme has the monaural, installs the cutting edge on the monaural. The cutting edge includes ears, card, blade, boss and draw-in groove, and ears and monaural butt joint, the quantity of cutting edge and the quantity of monaural are corresponding, and the card is connected to the ears, installs the blade on the card, and card upper end inboard has the boss, has in the boss to have the draw-in groove of upper shed, and boss and draw-in groove realize the fixed of cutting edge with the rand cooperation jointly. The rand includes rand face, centre bore, snap ring, circular slot and round platform, and rand face middle part has the centre bore, and the big footpath size in centre bore and screw thread district equals, and the centre bore registrates on the screw thread district, and rand bottom outer fringe has the snap ring, and the snap ring cooperatees with the draw-in groove and compresses tightly the cutting edge, and the snap ring inner circle has the circular slot, and the circular slot cooperatees with the boss and compresses tightly the cutting edge, and the circular slot inner circle has the round platform, and the degree that compresses tightly of rand to. The clamping part is installed above the clamping ring and comprises a positive nut and a negative nut, and the positive nut and the negative nut are installed on the threaded area through threads.

Furthermore, the number of the single lugs is 2-4, and the single lugs are uniformly distributed at the lower end of the cutter shaft.

Furthermore, the lower end of the cutter shaft is provided with an oblique cone head, and the single lug is arranged on the oblique cone head, so that the cutting edge can be inwards retracted in the design mode, and the size of the cutter can be reduced.

Further, the blade can be fixedly connected to the card by spot welding or the like, and the card and the blade can be made into an integral structure.

The invention has the beneficial effects that:

the milling cutter is used for milling the stay of the transformer, the milling angle of the stay of the transformer can be adjusted by the unique structural design, and the cutter is only required to be provided with clamping rings with different diameters. For the milling of the stay bar, the milling operation of various angles can be completed through flexible structural design on the premise of ensuring the strength of the cutter.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a front view of the present invention;

FIG. 3 is an exploded view of the present invention;

FIG. 4 is a schematic view of the collar of the present invention;

in the figure: 10. the cutter shaft, 11. the cutter handle, 12. the thread area, 13. the oblique cone head, 14. the single lug, 20. the cutting edge, 21. the double lug, 22. the clamping piece, 23. the blade, 24. the boss, 25. the clamping groove, 30. the clamping ring, 31. the clamping ring surface, 32. the center hole, 33. the clamping ring, 34. the circular groove, 35. the circular platform, 40. the pressing part, 41. the positive nut, 42. the negative nut.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Referring to fig. 1-4, the transformer support groove cutting tool includes a knife shaft 10, a knife blade 20, a clamping ring 30 and a pressing portion 40, wherein the knife blade 20 is mounted on the knife shaft 10 and can rotate on the knife shaft 10, the clamping ring 30 is mounted on the knife shaft 10 and locks the angle of the knife blade 20, and the pressing portion 40 is mounted on the knife shaft 10 and locks the clamping ring 30 on the knife shaft 10.

The cutter shaft 10 comprises a cutter handle 11, a threaded area 12, an oblique conical head 13 and a single lug 14, the uppermost end of the cutter shaft 10 is the cutter handle 11, the cutter handle 11 is upwards connected with a main shaft of a milling machine, the threaded area 12 is arranged in the middle of the cutter shaft 10, a pressing part 40 is arranged on the threaded area 12, the lower end of the cutter shaft 10 is provided with the single lug 14, a cutting edge 20 is arranged on the single lug 14, and the number of the single lugs 14 is 2-4, and the single lugs are uniformly distributed at the lower end of the. The lower end of the cutter shaft 10 is provided with a bevel head 13, and the single lug 14 is arranged on the bevel head 13, so that the blade 20 can be arranged and retracted inwards, and the size of the cutter can be reduced.

The cutting edge 20 comprises two lugs 21, a clamping piece 22, a blade 23, a boss 24 and a clamping groove 25, the two lugs 21 are butted with the monaural 14, that is, the number of the cutting edges 20 corresponds to the number of the monaural 14, the lugs 21 are connected with the clamping piece 22, the blade 23 is installed on the clamping piece 22, the blade 23 can be installed on the clamping piece 23 in a fixed connection mode such as spot welding, of course, the clamping piece 22 and the blade 23 can also be made into an integral structure, the boss 24 is arranged on the inner side of the upper end of the clamping piece 22, the clamping groove 25 with an upward opening is arranged in the boss 24, and the boss 24 and the clamping groove 25 are matched with the.

The clamping ring 30 comprises a clamping ring surface 31, a central hole 32, a clamping ring 33, a circular groove 34 and a circular truncated cone 35, the central hole 32 is formed in the middle of the clamping ring surface 31, the size of the central hole 32 is equal to that of the large diameter of the threaded area 12, the central hole 32 is sleeved on the threaded area 12, the clamping ring 33 is arranged on the outer edge of the bottom of the clamping ring 30, the clamping ring 33 is matched with the clamping groove 25 to compress the cutting edge 20, the circular groove 34 is formed in the inner ring of the clamping ring 33, the circular groove 34 is matched with the boss 24 to compress the cutting edge 20, the circular truncated cone 35 is formed in the inner ring of the circular groove.

The pressing part 40 is installed above the clamping ring 30, the pressing part 40 comprises a positive nut 41 and a negative nut 42, the positive nut 41 and the negative nut 42 are installed on the threaded area 12 through threads, and after the positive nut and the negative nut are pressed, no matter how the rotation direction of the cutter is, a good loosening effect can be achieved, and the clamping ring 30 is prevented from loosening.

Considering that the material of the transformer support is mostly wood structure or laminated cardboard structure, the milling force required is small, and even if the blade 20 of the cutter is supported only at two ends, the strength of the cutter is enough.

Furthermore, for different angle tool requirements, it is necessary to fit the tool with different diameter collars 30, and it is necessary to fit multiple collars 30 for each tool. Of course, the overall cost of the tool is greatly saved.

The working principle of the invention is as follows: the collar 30 with the proper diameter is selected according to the milling angle, the cutting edge 20 is adjusted to the proper angle, the collar 30 is installed, the cutting edge 20 is fixed, the positive nut 41 and the negative nut 42 of the pressing part 40 are installed one by one, the collar 30 is locked, the adjustment of the cutter is completed, and then the cutter is installed on a milling machine through the cutter handle 11, so that the beveling operation can be started.

The above embodiments mainly describe the transformer stay beveling tool of the present invention. While only a limited number of embodiments and features have been described, those skilled in the art will recognize that the invention can be embodied in many other forms without departing from the spirit or scope thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, and various modifications and alternative arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims.

Claims

1. The utility model provides a transformer stay groove cutter, including arbor (10), cutting edge (20), rand (30) and portion (40) that compresses tightly, a serial communication port, cutting edge (20) are installed on arbor (10), can rotate on arbor (10), rand (30) are installed on arbor (10), lock the angle of cutting edge (20), portion (40) that compresses tightly is installed on arbor (10), lock rand (30) on arbor (10), arbor (10) are including handle of a knife (11), threaded area (12) and monaural (14), the top of arbor (10) is handle of a knife (11), handle of a knife (11) upwards connect the main shaft of milling machinery, arbor (10) middle part has threaded area (12), install portion (40) that compresses tightly on threaded area (12), arbor (10) lower extreme has monaural (14), install cutting edge (20) on monaural (14), cutting edge (20) include that ears (21) have, The cutting tool comprises a clamping piece (22), blades (23), bosses (24) and clamping grooves (25), wherein double lugs (21) are in butt joint with single lugs (14), the number of cutting edges (20) corresponds to the number of the single lugs (14), the double lugs (21) are connected with the clamping piece (22), the blades (23) are installed on the clamping piece (22), the bosses (24) are arranged on the inner side of the upper end of the clamping piece (22), the clamping grooves (25) with upward openings are arranged in the bosses (24), the bosses (24) and the clamping grooves (25) are matched with a clamping ring (30) together to realize the fixation of the cutting edges (20), the clamping ring (30) comprises a clamping ring surface (31), a central hole (32), a clamping ring (33), a circular groove (34) and a circular truncated cone (35), the central hole (32) is arranged in the middle of the clamping ring surface (31), the central hole (32) is equal to the large diameter of the threaded area (12), the central hole (32) is, snap ring (33) cooperate with draw-in groove (25) and compress tightly cutting edge (20), snap ring (33) inner circle has circular slot (34), circular slot (34) cooperate with boss (24) and compress tightly cutting edge (20), circular slot (34) inner circle has round platform (35), install in rand (30) top compressing portion (40), compressing portion (40) include positive nut (41) and anti-nut (42), positive nut (41) and anti-nut (42) all install on threaded area (12) through the screw thread.

2. The transformer stay groove cutting tool according to claim 1, wherein the number of the single lugs (14) is 2-4, and the single lugs are uniformly distributed at the lower end of the cutter shaft (10).

3. Transformer support beveling tool according to claim 1, characterized in that the lower end of the shaft (10) has a bevelled cone (13), on which bevelled cone (13) a single lug (14) is mounted.

4. Transformer support groove cutting tool according to claim 1, characterized in that the blade (23) is mounted on the clamping piece (23) by means of a fixed connection by spot welding or by making the clamping piece (22) and the blade (23) as a one-piece structure.