CUTTING RING FOR A CUTTING ROLLER FOR QUARRYING AND CUTTING ROLLER FOR QUARRYING
A cutting ring for quarrying, including a number of cutting inserts which are arranged in cutting insert grooves which extend continuously in an axial direction, allowing the cutting ring to be produced in a relatively simply manner and to have a long service life.
This application is a U.S. National Phase Patent Application based on International Application Serial No. PCT/EP2013/071054 filed Oct. 9, 2013, the disclosure of which is hereby explicitly incorporated by reference herein.
BACKGROUND OF THE INVENTION1. Field of the Invention
The invention relates to a cutting ring of a cutting roller for quarrying and to a cutting roller for quarrying.
2. Description of the Related Art
Such a cutting ring is known from U.S. Pat. No. 7,401,537 B1. The prior cutting ring is equipped with circumferentially closed cutting insert seats shaped as holes formed by boring. Cutting inserts are disposed in the cutting insert seats and are held therein by a press fit. Intermediate portions located between the cutting inserts are hardened by laser machining
SUMMARY OF THE INVENTIONThe present invention provides a cutting ring that is distinguished by a relatively long service life combined with relatively simple production.
By virtue of the fact that in the inventive cutting ring the cutting insert seats are continuous in the axial direction and are formed with stop walls only in the circumferential direction, the cutting inserts can be inserted in and reliably fixed in the cutting insert seats, particularly by being slid in in the axial direction.
Further useful embodiments and advantages of the invention will be emerge from the following description of exemplary embodiments, read with reference to the figures of the drawing.
In one form thereof, the present invention provides a cutting ring for a cutting roller for quarrying, including a number of cutting inserts disposed in cutting insert seats, characterized in that the cutting insert seats are formed as cutting insert grooves that are continuous in the axial direction.
The above mentioned and other features and objects of this invention, and the manner of attaining them, will become more apparent and the invention itself will be better understood by reference to the following description of embodiments of the invention taken in conjunction with the accompanying drawings, wherein:
On the side of the first shaft bearing body 7 facing away from the flange-side cover 3, the cutting roller shaft 2 is surrounded by a compression ring 11, on whose side facing away from the shaft bearing body 7 is disposed a second shaft bearing body 12, which, like the first shaft bearing body 7, surrounds the cutting roller shaft 2.
Disposed at a radial distance from the second shaft bearing body 12 is a second cutting ring bearing body 13, a number of second bearing rollers 14 being disposed between the second shaft bearing body 12 and the second cutting ring bearing body 13. Disposed on the side of the second shaft bearing body 12 facing away from the compression ring 11 is a second ring sealing unit 15, which rests by a portion on the second shaft bearing body 12 and bears against a second seal carrier 16 disposed radially outward from the second shaft bearing body 12, while another portion of the second ring sealing unit 15 engages in a thread-side cover 17 disposed on the side of the shaft bearing body 12 facing away from the compression ring 11. The thread-side cover 17 can be screwed by means of an edge shaft nut 18 onto an external thread formed on the cutting roller shaft 2, thereby fixing the aforesaid components in the axial direction.
It can also be seen from the representation according to
Attached to the side of the roller base body 19 facing away from the cutting roller shaft 2 in the radial direction is an exemplary embodiment of a cutting ring 21 according to the invention, which in the implementation according to
The cutting ring 21 carries in a radially raised outer portion 25 a number of cutting inserts 26 made of a harder material than the material of the cutting ring 21.
It can also be seen from the representation according to
Formed at the ends of the radial side surfaces 32, 33 directed away from the transition surfaces 30, 31 are annular step surfaces 34, 35 that extend outward in the circumferential direction of the cutting roller 21. The ends of the annular step surfaces 34, 35 that are disposed outward in the circumferential direction are adjoined by wedge side surfaces 36, 37 that extend in the radial direction all the way to the radial outer side of the cutting ring 21. The wedge side surfaces 36, 37 of a cutting insert groove 28 are oriented so that they are inclined toward each other from radially inward to radially outward, such that a cutting insert 26 shaped complementarily to the cutting insert groove 28, when inserted in the axial direction into the cutting insert groove 28, is held in place in the radial direction of the cutting ring 21.
To secure the cutting inserts 26 in the cutting insert grooves 28 in an operationally safe manner, the cutting insert grooves 28 are lined with solder layers 38, which ensure a secure connection after suitable heating of the cutting ring 21 in the region of the cutting insert grooves 28 and cutting inserts 26.
During operation of the cutting roller 1, the invention particularly furnishes the advantage that the cutting inserts 26 are secured only by their outer sides extending in the circumferential direction, which are subject to relatively little wear and tear. Moreover, wear on the cutting ring 21 occurs essentially in the intermediate web portions 27, so the cutting inserts 26 form a tooth structure and protect the intermediate web portions 27 against additional excessive wear.
While this invention has been described as having a preferred design, the present invention can be further modified within the spirit and scope of this disclosure. This application is therefore intended to cover any variations, uses, or adaptations of the invention using its general principles. Further, this application is intended to cover such departures from the present disclosure as come within known or customary practice in the art to which this invention pertains and which fall within the limits of the appended claims.
Claims
1-6. (canceled)
7. A cutting ring for a cutting roller for quarrying, said cutting ring defining an axial direction and comprising a plurality of cutting inserts disposed in cutting insert seats, said cutting insert seats formed as cutting insert grooves that are continuous in the axial direction.
8. The cutting ring of claim 7, wherein said cutting inserts fill their respective cutting insert grooves completely and terminate outwardly flush with intermediate web portions formed between adjacent cutting insert grooves.
9. The cutting ring of claim 7, wherein said cutting inserts are disposed in a raised outer portion of said cutting ring.
10. The cutting ring of claim 7, wherein each said cutting insert groove has wedge insert surfaces that are inclined toward each other from radially inward to radially outward.
11. The cutting ring of claim 7, further comprising a solder layer present between each said cutting insert and each respective cutting insert groove.
12. A cutting roller for quarrying, including at least one cutting ring of claim 7.
13. The cutting ring of claim 8, wherein said cutting inserts are disposed in a raised outer portion of said cutting ring.
14. The cutting ring of claim 8, wherein each cutting insert groove has wedge insert surfaces that are inclined toward each other from radially inward to radially outward.
15. The cutting ring of claim 9, wherein each cutting insert groove has wedge insert surfaces that are inclined toward each other from radially inward to radially outward.
16. The cutting ring of claim 8, further comprising a solder layer present between each said cutting insert and each respective cutting insert groove.
17. The cutting ring of claim 9, further comprising a solder layer present between each said cutting insert and each respective cutting insert groove.
18. The cutting ring of claim 10, further comprising a solder layer present between each said cutting insert and each respective cutting insert groove.
19. A cutting roller for quarrying, including at least one cutting ring of claim 8.
20. A cutting roller for quarrying, including at least one cutting ring of claim 9.
21. A cutting roller for quarrying, including at least one cutting ring of claim 10.
22. A cutting roller for quarrying, including at least one cutting ring of claim 11.
Type: Application
Filed: Oct 9, 2013
Publication Date: Oct 8, 2015
Inventors: Werner Burger (Schwanau), Robert Oehler (Zell a.H)
Application Number: 14/437,094