Patents Assigned to Kocks Technik GmbH & Co.
-
Patent number: 4909058Abstract: In a method of controlled rod or wire rolling of alloy steel, for example austenitic steel, in a rolling mill comprising a plurality of roll blocks (1, 2, 3) each having a plurality of roll stands, the temperature of the alloy steel being rolled in brought to a predetermined value in its passage between the blocks (1, 2, 3) by positive cooling by a cooler (6, 7) and/or positive heating by a heater (10, 11). Rolling at a specified temperature, or a specified temperature differential between the surface and the core, of the alloy steel being rolled is thus made possible.Type: GrantFiled: May 19, 1988Date of Patent: March 20, 1990Assignee: Kocks Technik GmbH & Co.Inventors: Ali Bindernagel, Hans Brauer, Ernst O. Blos
-
Patent number: 4879924Abstract: The invention concerns a gear unit for driving the rolls of a roll train with a number of consecutively arranged roll stands. This gear unit has planetary gear sets at at least one output shaft, which are located one behind the other at short distances. Due to a crosshead provided in accordance with the invention, the output shaft of each planetary gear set is relieved of bearing forces and the torques of the gears, such that it can have a small diameter, which in turn permits a building up of the planetary gear set, such that the operating torque and the operating r.p.m.'s of the planetary gear sets can be considerably higher than in the familiar construction types.Type: GrantFiled: July 29, 1988Date of Patent: November 14, 1989Assignee: Kocks Technik GmbH & Co.Inventors: Helmut Holthoff, Hermann Moltner
-
Patent number: 4848185Abstract: In a transmission for driving the rolls of a rolling line having a number of rolling stands disposed one after another, a respective planetary transmission stage is provided at several output shaft (20) and forms the output rotational speed from a basic rotational speed and an additional rotational speed. The gear wheels (2,23) of the gear wheel transmission trains transmitting the basic and additional rotational speeds are mounted on stationary bearing bushes (3, 26) which project into the hub regions of the gear wheels (2, 23) and are secured in bores or on flange facings of the load-bearing walls (5, 6) of the transmission housing (1). Only one of the gear wheel transmision trains is disposed between the load-bearing walls of the transmision housing, while the other is disposed on the outside stands. This permits the transmission to be of lighter construction and allows greater gear ratios in the gear wheel transmission trains and a smaller distance between the output shafts (20).Type: GrantFiled: March 31, 1987Date of Patent: July 18, 1989Assignee: Kocks Technik GmbH & Co.Inventors: Hermann Moltner, Helmut Holthoff
-
Patent number: 4827749Abstract: A method and apparatus for transverse, preferably skew, rolling seamless tube blanks, is provided wherein said seamless tube blanks are rolled down by a mandrel rod lying in their longitudinal bore or are rolled onto a mandrel rod at the delivery end. During transverse rolling each tube blank is subjected to a predetermined, controllable torque exerted by the mandrel rod in order to eliminate substantially the formation of pockets in the region of the sizing pass during transverse rolling.Type: GrantFiled: March 30, 1988Date of Patent: May 9, 1989Assignee: Kocks Technik GmbH & Co.Inventors: Karlhans Staat, Hermann Moltner
-
Patent number: 4827751Abstract: A device for machining a plurality of rolls (4) which are mounted ready for use in a rolling stand (3) and form a common sizing pass (6) has at least one tool (5) which is disposed outside the sizing pass (6) for machining the working surfaces of the roll. In order that the shape and size of the sizing pass formed by the rolls is as accurate as possible, a measuring device (8) engages in the sizing pass (6), and a computer (10) compares its actual values with predetermined desired values, the resulting error signals being used to control the tool via servomotors (13, 14).Type: GrantFiled: July 31, 1987Date of Patent: May 9, 1989Assignee: Kocks Technik GmbH & Co.Inventor: Helmut Holthoff
-
Patent number: 4798071Abstract: This invention concerns a process and an arrangement for the production of seamless tube. An ingot heated to the rolling temperature is pierced in a skew-rolling stand to form a hollow ingot, is later stretched into a tube bloom and is rolled out into a finished tube. In order to improve this familiar process, it is proposed to conduct the stretching immediately after the piercing in the same heat as the latter, in which case the rolled goods is stretched in the same skew-rolling stand, but with a passage direction that is opposite to that of piercing. An arrangement with which this process according to the invention can be implemented is also proposed.Type: GrantFiled: June 17, 1987Date of Patent: January 17, 1989Assignee: Kocks Technik GmbH & Co.Inventors: Karlhans Staat, Hermann Moltner
-
Patent number: 4784032Abstract: Shears for dividing and cropping rod-shaped work material (18) which is moving in the longitudinal direction, have two paraxial blade shafts (3) driven in opposite directions, a blade holder (1,2) having at least one blade (6, 7) being rigidly secured to each of said shafts. The cutting edges (14, 15) of the blade project beyond the blade holders and orbit along two circular paths (16, 17) which overlap slightly. In order to prevent, when using this type of shears, the following longitudinal section being bent following cutting, the two blade clearance angles (.beta., .gamma..sub.1) upstream of the cutting edges (14, 15) at the entry side are equal and the two blade clearance angles (.beta..sub.1,.gamma.) downstream of the cutting edges at the delivery side are also the same size.Type: GrantFiled: December 11, 1986Date of Patent: November 15, 1988Assignee: Kocks Technik GmbH & Co.Inventor: Kurt Leeuwestein
-
Patent number: 4768370Abstract: A rolling line for the stretch-reducing of tubes, has a plurality of rolling stands which are arranged closely one after the other. These rolling stands are driven by a group drive, whereby the rolling stands, or at least a part thereof, are divided into groups, the groups being defined between directly acting drive shafts (111). The stand locations lying between these drive shafts (111) are driven by way of differential gear stages (112), each combining two rotational speeds which are derived by way of gear wheel trains (113-116, 117-120) from the drive shafts (111).Type: GrantFiled: April 7, 1986Date of Patent: September 6, 1988Assignee: Kocks Technik GmbH & Co.Inventor: Hermann Moltner
-
Patent number: 4738128Abstract: In a skew-rolling stand for rolling hollow billets, in particular for stretching hollow billets into tubular blooms, work material guides are provided at the entry end and/or at the delivery end. These work material guides comprise a preferably motor-driven guide tube (19) which can be rotated about its longitudinal axis, which considerably improves guiding and offers additional protection against heat losses and scaling of the work material. The guide tube does away with the need for a re-heating furnace and allows immediate subsequent finish-rolling.Type: GrantFiled: August 27, 1986Date of Patent: April 19, 1988Assignee: Kocks Technik GmbH & Co.Inventor: Karlhans Staat
-
Patent number: 4718280Abstract: A rolling line for rolling tubular or rod-shaped material, in particular of reducing tubes, has a plurality of rolling stands disposed closely one after the other, as well as measuring rolls disposed upstream of and/or beyond the rolling stands and rolling on the material. In order to keep the distance between the measuring rolls and the first or last rolling stands as small as possible whatever the number of rolling stands used, and hence to ensure the longest possible use of the measuring rolls, said measuring rolls are disposed in measuring roll stands which fit into the reception pockets of the rolling stands which, like said rolling stands, can be displaced and disposed in or against the direction of rolling.Type: GrantFiled: August 27, 1986Date of Patent: January 12, 1988Assignee: Kocks Technik GmbH & Co.Inventors: Herrmann Moltner, Hans-Dieter Gerhards
-
Patent number: 4666317Abstract: The invention concerns a bearing mounting for rotating shafts, in which the main bearings are roller bearings and the shafts turn at more than ca. 3000 r.p.m. With the aid of auxiliary bearings, these main bearings are loaded radially according to the invention in order to prevent the rollers and roller cages of the main bearings from rotating with only a reduced r.p.m. in the case of nonloaded rotating shaft and being suddenly accelerated with a sudden loading of the shaft and thus wearing prematurely. This radial load results from the fact that the auxiliary bearings are maintained eccentrically shifted.Type: GrantFiled: March 13, 1986Date of Patent: May 19, 1987Assignee: Kocks Technik GmbH & Co.Inventor: Helmut Holthoff
-
Patent number: 4577481Abstract: A process and apparatus for the production of seamless tubing incorporating a push bench is provided in which ingots are pierced in the longitudinal direction by diagonal rolls over the stopper rods of a piercing mill to provide pierced ingots having one end with a wall thickening which protrudes outwardly or inwardly, then the wall thickening ends reshaped to provide a partially closed end and finally the pierced ingots are forced through the roll passes of a push bench by mandrel rods engaging the partially closed end so that the ingots are formed into a tube bloom.Type: GrantFiled: March 12, 1984Date of Patent: March 25, 1986Assignee: Kocks Technik GmbH & Co.Inventor: Karlhans Staat
-
Patent number: 4571970Abstract: In a rolling mill plant for the manufacture of seamless tubes, a piercing mill (2), a planetary skew rolling mill (15) and a sizing or stretch-reducing rolling mill (18) are arranged one after the other. In order to improve the output and the quality of the products of plant of this kind, it is proposed not to withdraw the shaft rods (11) used during the piercing operation in the mill (2), but also to use them as internal tools in the planetary skew rolling mill (15). The shaft rods can then remain at the entry end upstream of the planetary skew rolling mill (15) from where they can be returned to the piercing mill (2). Alternatively (FIGS. 2 and 4) they can also pass through the planetary skew rolling mill and be returned from the delivery end thereof to the piercing mill. The insertion, hitherto required, of rods into the hollow ingots before entering the planetary skew rolling mill is not required. The heavy scaling of the surface of the bore in the hollow ingot thereby occurring is avoided.Type: GrantFiled: November 16, 1984Date of Patent: February 25, 1986Assignee: Kocks Technik GmbH & Co.Inventors: Hermann Moltner, Karl-Hans Staat
-
Patent number: 4546633Abstract: An apparatus for conveying tubular or bar-shaped rolled stock is provided having a collecting device which collects pieces of tube or bars from a cooling bed in closely spaced pockets, a transverse conveying device having the same pocket spacing as the collecting device which picks the collected pieces from the collecting device and transports them to and deposits them on a longitudinal conveyor, by means of which the pieces of rolled stock are fed to a cutting device which has a clamping device also provided with the same pocket spacing as the collecting device and which cuts the stock into portions of predetermined length.Type: GrantFiled: September 27, 1984Date of Patent: October 15, 1985Assignee: Kocks Technik GmbH & Co.Inventors: Hans Brauer, Kurt Leeuwestein
-
Patent number: 4523455Abstract: The invention concerns a press for the testing by means of internal pressure of tubes provided with threaded ends, in which end pieces screwed in a pressure medium-tight manner on the tube ends are inserted into the sealing heads of the press. The end pieces are cap-like and have radially arranged connecting boreholes so that the pressure medium feed is radial in contrast to the axial pressure medium feed of the familiar constructions. No appreciable axial forces thus arise between the tubes and the test heads. In addition, the outer end of the cap-like end pieces facing away from the tube serves for the coupling of a shaft, which can displace the tube with the end piece axially and act upon it with a torque. Furthermore, the sealing head is readily detachable in a like manner in a retaining head and is inserted pressure medium-tight to the outside, just as the end pieces in the sealing heads.Type: GrantFiled: September 12, 1983Date of Patent: June 18, 1985Assignee: Kocks Technik GmbH & Co.Inventor: Theodor Zacharias
-
Patent number: 4523622Abstract: In the manufacture of hollow metal ingots, particularly for producing seamless tubes, the liquid melt is poured rapidly into an upright or slightly inclined chill mould, the chill mould is closed and is tilted into a substantially horizontal position in which it is slowly rotated about its longitudinal axis. The hole is produced in the hollow ingots by pouring into the chill mould a quantity of melt which corresponds to the total volume of the chill mould plus the shrinkage volume and less the volume of the desired hole. The method is particularly advantageous when manufacturing hollow ingots of great length, although the method can also be used when manufacturing short hollow ingots. It is particularly advantageous to blow in an accurately dimensioned quantity of inert gas, corresponding to the hole in the hollow ingot, during and after the actual pouring operation.Type: GrantFiled: March 14, 1984Date of Patent: June 18, 1985Assignee: Kocks Technik GmbH & Co.Inventors: Heinrich Faste, Ali Bindernagel
-
Patent number: 4512173Abstract: The invention concerns a tube release roll mill with four or more driven rolls, which in pairs form a pass opening. The diagonally positioned identically constructed rolls have an enlarged working surface width. A certain roll pair spacing is also provided, as well as an enlarged angle of attack of the rolls, which together result in the wall thickness of the tube bloom being more uniform, the development of fewer surface defects, and a quieter operation of the roll mill.Type: GrantFiled: July 11, 1983Date of Patent: April 23, 1985Assignee: Kocks Technik GmbH & Co.Inventors: Hans Brauer, Hans-Dieter Gerhards
-
Patent number: 4503695Abstract: The invention concerns an arrangement for the bending of laying tubes for wire-winding layering apparatuses, in which the molding body that determines the form of the laying tube runs essentially horizontally and is rotatably supported, such that a better manipulation of the highly heated laying tube is achieved during bending. The molding body also consists of two drums, one inserted into the other, the outer one of which has a lateral edge that matches the laying tube form desired and the two drums have a generated surface that matches the laying tube form desired. Together, they serve as the stop surfaces for the bending process. In this manner, the bending of the laying tubes is considerably simplified and a precise laying tube form is achieved.Type: GrantFiled: July 25, 1983Date of Patent: March 12, 1985Assignee: Kocks Technik GmbH & Co.Inventor: Karl-Heinz Gunther
-
Patent number: 4501134Abstract: A rolling mill plant has a planetary skew rolling mill and a reducing or sizing rolling line disposed at a short distance therebeyond for the purpose of manufacturing tubes. In order to avoid axial stressing of the work material between the planetary skew rolling mill and the reducing or sizing rolling line when the work material is simultaneously located in both of them, a tension and compression measuring device is disposed in the region of the reducing or sizing rolling line for the purpose of corresponding regulation of the latter's drive motor. A torque measuring device is disposed between the mounting of the mandrel rod of the planetary skew rolling mill in order to be able to detect torque stresses in the work material which are then eliminated in dependence upon the measured values of the torque measuring device by corresponding regulation of the rotational speed of the rolls and of the rotor of the planetary skew rolling mill.Type: GrantFiled: May 10, 1983Date of Patent: February 26, 1985Assignee: Kocks Technik GmbH & Co.Inventors: Karl-Hans Staat, Hermann Moltner
-
Patent number: 4488419Abstract: A skew rolling mill for tubes is provided having a stand upright in two parts laterally separable along a vertical parting line, one part being fixed and the other movable horizontally transverse to the pass line of the mill, a pair of driven skew rolls journaled adjacent one another and inclined to the pass line, and a pair of driven guide discs journalled in the stand upright to be disposed in a vertical plane, one above and one below the pass line, the rolls and clamps being removable toward the vertical parting line and tie rods subject to pre-stress by hydraulically movable nuts.Type: GrantFiled: July 21, 1982Date of Patent: December 18, 1984Assignee: Kocks Technik GmbH & Co.Inventors: Albert Quambusch, Wilfried Schoneberg