CN204866840U

CN204866840U - Modular carbide roll

Info

Publication number: CN204866840U
Application number: CN201520575522.4U
Authority: CN
Inventors: 孙浩斌; 孙积海; 张华�
Original assignee: PENGLAI SUPERHARD COMPOUND MATERIAL CO Ltd
Current assignee: PENGLAI SUPERHARD COMPOUND MATERIAL CO Ltd
Priority date: 2015-08-04
Filing date: 2015-08-04
Publication date: 2015-12-16
Anticipated expiration: 2025-08-04

Abstract

The utility model belongs to the technical field of the roll technique and specifically relates to a modular carbide roll, including the roll axle, roll roll segment, key and lock nut, the epaxial key of installing of roll, it mutually supports with the roll outside diameter of shaft to roll roll segment's internal diameter, it is provided with the keyway on the roll segment to roll, keyway and the cooperation of the epaxial key of roll, roll axle both ends are provided with the tip screw thread, lock nut is installed at roll axle both ends, roll the design of roll segment one end and design to the recess for boss, the other end, the height of boss is the same with the degree of depth of recess, boss and groove phase cooperation, it is three it cooperates the connection in proper order to roll roll segment, the utility model discloses having increased the joint strength and the job stabilization nature of roll, having improved the machining precision of roll, guaranteed the alignment of roll with the roll axle, installation and easy maintenance save manufacturing cost, have improved production efficiency.

Description

A kind of Combined hard-alloy roll

Technical field

The utility model relates to roll technology field, especially a kind of Combined hard-alloy roll.

Background technology

Roll is the instrument making technology produce plastic deformation, it is the vitals determining rolling mill efficiency and mill bar quality, roll is the important spare part of steel rolling equipment, the pressure produced when organizing roll rolling is one to one utilized to roll stone roller steel, existing roll adopts monolithic construction, in use the wearing and tearing of roll are very serious, once reach the limit of wear, whole roll is scrapped, cause the wasting of resources, add production cost, there is a lot of composite roll at present, but it is high to there is production cost, be interconnected instability, noise is produced large in running, structural design defect causes wearing and tearing to be accelerated, easily there is the deficiency of slight crack in surface, disclose a kind of name in prior art to be called and " to combine embedded roll, application number is 201420786005.7 " patent, the roll overcoat that the embedded roll of this combination comprises roll inner core and matches with roll inner core, described roll overcoat is combined by multiple roll section, described segment body inwall place is evenly provided with three positioning convex strips gone up along its length, one end of roll segment body offers and distributes and the annular lug matched with annular groove along its end face, realize the roll section changing separately wearing and tearing, save production cost, improve the intensity of roll, easy to maintenance, but, if the axiality of three positioning convex strips that this roll section inwall is arranged and roll inner core does not reach requirement, Roller Machining Product Precision is easily caused to reduce, therefore positioning convex strip requirement on machining accuracy is high, increase processing cost, and lengthen with service time, positioning convex strip and roll inner core easily relatively rotate, cause roll section locate failure, shorten the life-span of roll, in addition, the connected mode between roll section is that annular groove is connected with annular lug, and owing to there is shearing force between roll section, long-term rotation easily causes annular lug to rupture, and causes rolls damage, shortens the life-span of roll, increases production cost.

Summary of the invention

In order to overcome the deficiency of existing roll technology, the utility model provides a kind of Combined hard-alloy roll, ensure that the alignment of roll section and roll mandrel, add the bonding strength between roll section, improve Roller Machining precision, reduce production cost, improve production efficiency.

The utility model solves the technical scheme that its technical problem adopts, a kind of Combined hard-alloy roll, comprise roll mandrel, roll section, key and locking nut, described roll mandrel is provided with key, the described internal diameter of roll section and the external diameter of roll mandrel cooperatively interact, described roll section is provided with keyway, described keyway coordinates with the key on roll mandrel, described roll mandrel two ends are provided with end thread, described roll mandrel two ends are provided with locking nut, described roll section one end is designed to boss, the other end is designed to groove, the height of described boss is identical with the degree of depth of groove, described boss and fit depressions, three described roll sections are connected successively.

Described locking nut sidewall is provided with backing-up screw, and described backing-up screw head withstands on roll mandrel.

The material of described roll section is carbide alloy, and intensity is high, and wearability is good.

The beneficial effects of the utility model are, a kind of Combined hard-alloy roll, be connected by roll section and roll mandrel are set to key, add the bonding strength of roll and the stability of work, improve the machining accuracy of roll, be segmented by roll by integral design, by arranging the connected mode of boss and groove, ensure that the alignment of roll and roll mandrel, easy to installation and maintenance, save production cost, improve production efficiency.

Accompanying drawing explanation

Below in conjunction with drawings and Examples, the utility model is further illustrated.

Fig. 1 is overall structure schematic diagram of the present utility model.

Fig. 2 is the front sectional view of roll section.

Fig. 3 is the left view of roll section.

1. roll mandrels in figure, 2. roll section, 3. key, 4. locking nut, 5. backing-up screw, 6. end thread, 21. boss, 22. grooves, 23. keyways, 24. roll endoporus.

Detailed description of the invention

With reference to accompanying drawing, a kind of Combined hard-alloy roll, comprise roll mandrel 1, roll section 2, key 3 and locking nut 4, described roll mandrel 1 is provided with key 3, the internal diameter of described roll section 2 and the external diameter of roll mandrel 1 cooperatively interact, described roll section 2 is provided with keyway 23, described keyway 23 coordinates with the key 3 on roll mandrel 1, described roll mandrel 1 two ends are provided with end thread 6, described roll mandrel 1 two ends are provided with locking screw 4, described roll section 2 one end is designed to boss 21, the other end is designed to groove 22, the height of described boss 21 is identical with the degree of depth of groove 22, described boss 21 matches with groove 22, three described roll sections 2 are connected successively.

Described locking nut 4 sidewall is provided with backing-up screw 5, and described backing-up screw 5 head withstands on roll mandrel 1, prevents locking nut 4 from loosening.

The material of described roll section 2 is carbide alloy, and intensity is high, and wearability is good.

Claims

1. a Combined hard-alloy roll, comprise roll mandrel, roll section, key and locking nut, it is characterized in that, described roll mandrel is provided with key, the described internal diameter of roll section and the external diameter of roll mandrel cooperatively interact, described roll section is provided with keyway, described keyway coordinates with the key on roll mandrel, described roll mandrel two ends are provided with end thread, described roll mandrel two ends are provided with locking nut, described roll section one end is designed to boss, the other end is designed to groove, the height of described boss is identical with the degree of depth of groove, described boss and fit depressions, three described roll sections are connected successively.

2. Combined hard-alloy roll according to claim 1, is characterized in that, described locking nut sidewall is provided with backing-up screw, and described backing-up screw head withstands on roll mandrel.

3. according to Combined hard-alloy roll according to claim 1, it is characterized in that, the material of described roll section is carbide alloy.