CN2052694U - Rolling and milling groove mechanical equipments for deformed steel bar - Google Patents

Abstract

The utility model relates to rolling and milling groove mechanical equipment for deformed steel bars, which can continuously process the rolling and milling grooves of deformed steel bars and strength grade marking grooves. The rolling and milling groove mechanical equipment for deformed steel bars is composed of a movable tool head arranged on a horizontal universal miller, a controlling mechanism of a variable concave wheel, and a transmission system. The utility model is characterized in that the rolling and milling grooves of the deformed steel bar and the strength grade marking grooves can be once processed, and the problems of large investment of the original equipment, low work efficiency, complicated working operation, etc. can be solved. The utility model has the advantages of simple structure, practicability, reliability, and high efficiency.

Description

Rolling and milling groove mechanical equipments for deformed steel bar

The utility model relates to the used machinery processing apparatus of a kind of positive thread, says definitely, belongs to the mechanical automatics of the cross rib groove and the strength grade sign groove of a kind of machining deformation reinforcing bar (screw-thread steel) roll.

As everyone knows, deformed bar is to use one of construction material very widely, and its rebar surface generally is crescent screw thread (cross rib) through hot rolling, and according to the GB1499 standard code, the deformed bar surface must shut out the corresponding strength grade mark.For this reason, on the roll of the good pass of car, except that processing meets the cross rib groove of standard-required, also to process strength grade sign groove.For realizing above-mentioned processing request, must finish the processing content of two steps: the first, in processing cross rib groove, should reserve some dead slots on demand; The second, at dead slot position processing strength grade sign groove.For finishing whole process, need a cover special equipment.

At present, think that more feasible processing scheme is to transform milling machine, utilize a cover digital display system control milling machine to finish above-mentioned first procedure of processing, adopt the galvano-cautery method to finish above-mentioned second procedure of processing again.Two procedure of processings can only be finished separately respectively.In order to realize the action of dead slot, this special equipment is incision one cutter cross rib groove on the week of roll garden whenever, will pass through operating procedures such as parking, withdrawing, idle running, parking again, tool setting, driving, and manufacturing procedure is numerous and diverse, is difficult to finish the requirement of continuous dead slot again.Simultaneously, because this special equipment, investment for trnasforming urban land is big, the cycle is long, and operation sequence complexity, working (machining) efficiency are very low, so most of medium and small enterprise has to take the cooperation processing means, have so not only increased enterprise's cooperation processing expense, and influence is produced easily.

The purpose of this utility model be to overcome the deficiency of above-mentioned special processing equipment and provide a kind of can be in any form, the empty cutter of arbitrary number, the mechanical automatics of machining deformation bar roll cross rib groove continuously.This apparatus structure is simple, practical reliable, can once finish the processing of cross rib groove and strength grade sign groove.

Below in conjunction with description of drawings design of the present utility model and design feature.

Fig. 1 is this device overall structure schematic diagram

Fig. 2 A is this device movable carriage and drive system structure schematic diagram front view

Fig. 2 B is this device movable carriage and drive system structure schematic diagram vertical view

Fig. 3 A is that this installs variable recessed wheel construction schematic diagram front view

Fig. 3 B is that this installs variable recessed wheel construction schematic diagram vertical view

Such as Fig. 1～3, this device is to set up movable carriage fixed pedestal 2 at the former extension knife rest of horizontal universal milling machine, be provided with the movable carriage 15 that can move up and down along pedestal 2 in it, 4,10, this knife rest is by knife bar 15, support body 4 and top backstay 10 thereof form, its knife bar 15 and backstay 10 are installed on the support body 4, respectively fill the gear 5 such as on the knife bar 15 in former milling machine spindle and movable carriage, 8 And and idle wheel 7 form transmission system, for guaranteeing processing middle gear 5 and gear 8 synchronized rotations, spacing hinge joint connecting rod 6 is set between gear 5 and idle wheel 7 and gear 8 and idle wheel 7, and its idle wheel shaft core position is with two gears 5, the variation of 8 axle bases and moving. Movable carriage 15,4,10 rising and dropping control mechanism by one be arranged on that support body 4 tops compress backstay 10 recessed take turns 9 and the Compress Spring 3 that is arranged on knife rest pedestal 2 both sides form, gear 12,14 is housed on the recessed extending shaft 13 of taking turns 9 connecting axle 11 and workpiece chuck one side etc., form the recessed transmission system of taking turns, guarantee that recessed 9 rotating speeds of taking turns equate with workpiece (roll) 1 rotating speed. In the process of processing roll transverse rib groove, when the backstay 10 on the movable carriage enters recessed when taking turns recess 19, movable carriage 15,4,10 is upspring (bounce amount should greater than the transverse rib groove depth capacity) by Compress Spring 3, make cutter head 16 break away from workpiece 1 and rotate, realize the action request of empty cutter stroke; Take turns 9 and turn to backstay 10 and leave recessedly when taking turns recess 19 when recessed, recessedly take turns 9 and depress movable carriage 15,4,10, recover normal groove milling state.

Recessed relative position and recessed size of taking turns opening degree (the radian number that refers to heart angle, recess garden) of taking turns recess 19 and backstay 10 determined the location and time that cutter head 16 rises and falls, and then finishes and give fixed empty cutter stroke. In reality processing, because roll actual diameter and rolling deformed bar cross rib spacing and the requirement of dead slot number is different, set earlier the suitable recessed opening degree of taking turns for obtaining correct empty cutter stroke, must giving. Obviously, if design, make different recessed wheels of several opening degrees and can satisfy above-mentioned requirements, but do so both quite cumbersome, again extremely uneconomical, for this reason, the recessed wheel construction that a kind of opening degree of preferred design is variable is with the needs of the rolling different size deformed bar of the roll that adapts to variant diameter to cross rib spacing and dead slot thereof. Variable recessed wheel construction of the present utility model is designed to: according to maximum changing range and the dead slot number of roll actual diameter and rolled piece specification, calculate recessed maximum changing range of taking turns opening degree, one Sliding partitions 17 is assemblied in has the recessed of maximum opening degree and take turns on 9, the position of adjusting Sliding partitions 17 changes recessed size of taking turns opening degree, and fastening with bolt 18. Sliding partitions 17 can adopt integral body (ring type) or part (piece formula) structure as required, and its external diameter and opening shape and recessed the wheel are consistent. Take turns relatively moving of recess 19 positions by slide plate 17 with recessed, make the recessed opening degree of taking turns have adjustability, thereby satisfied above-mentioned designing requirement.

To sum up, this device realizes that the key problem in technology of continuous machining deformation bar roll cross rib groove and strength grade sign groove is: the one, and design one cover movable carriage and transmission system thereof; The 2nd, design one cover knife rest rise and fall controlling organization and transmission system thereof.The two haves both at the same time, and is indispensable, has realized above-mentioned purpose of the present utility model jointly.

Major advantage of the present utility model is:

1, small investment, simple in structure, operation is reliable, is convenient to promote;

2, sequence of operations process such as cancellation intermediate stop etc. is once finished the processing of cross rib groove and dead slot, the working (machining) efficiency height after the driving;

3, can realize the dead slot of continous way or step arbitrary number by actual needs;

4, because the realization of dead slot continuously also can process the intensity rank sign groove that meets standard-required without the galvano-cautery method.

Below, the process that equals two pitch (two milling), continous way dead slot with helical pitch is an example, and the using method and the operating procedure of this device is described:

1, according to number on roll actual diameter and desired cross rib spacing of rolled piece and the dead slot, be calculated as follows out the recessed opening degree of taking turns:

α＝2·i·π/N

N=π·D/L

In the formula: α---the recessed opening degree radian number of taking turns;

I---the number of continuous dead slot;

The number (comprising the dead slot number) that the cross rib groove is arranged on every groove of N---roll is chosen suitable odd number according to the margin of tolerance of cross rib spacing;

D---roll actual diameter, mm;

L---cross rib spacing, mm.

According to ending the α value that formula calculates, adjust variable recessed opening degree of taking turns;

The recessed position of recess 19 relative positioning bars 10 and the position of cutter head 16 relative workpiece 1 of taking turns when 2, determining initial manufacture.For guaranteeing crudy, play the horizontal center line both sides that the roll setting point should be located at milling cutter garden Zhou Yundong;

3, connect the conventional method of milling machine processing, calculate the rotation speed ratio of workpiece and milling cutter,, and press standard-required and select correct cutter type and milling amount with the requirement of assurance cross rib slot slope;

4, start milling machine, do not stop once, stop roll rotation then, on the dead slot position, mill out strength grade sign groove cross rib groove and dead slot completion of processing.

This device is not limited to design a kind of explanation on horizontal universal milling machine, and it also comprises other lathe with similar functions; This device also can be designed and manufactured into special equipment separately, and in such cases, its overall structure arrangement can change to some extent.In addition, this device can also be used to process the workpiece that other has similar requirement.

Claims (2)

1, the mechanical device of a kind of deformed bar roll groove milling, comprise the movable carriage that is arranged on the milling machine appropriate location and transmission system thereof and the knife rest controlling organization that rises and falls, its spy waits to be: (A) said movable carriage (4,10,15) by can be along the support body (4) of pedestal (2) slippage, backstay (10), knife bar (15) is formed, transmission system is by a reciprocity gear (5,8) and idle wheel (7) form, gear (5,8) and be provided with spacing hinge joint connecting rod (6) between the idle wheel (7), (B) the said knife rest controlling organization that rises and falls comprises being arranged on gear (12 is housed on the prolongation axle (13) that the knife rest top compresses the connecting axle (11) of the compression spring (3) of recessed wheel the (9) of backstay (10) and knife rest pedestal (2) both sides and recessed wheel the (9) and workpiece chuck one side etc., 14) transmission system of Zu Chenging.

2, mechanical device according to claim 1 is characterized in that said recessed wheel the (9) is one ring type or piece formula activity slide plate (17), variable recessed wheel that opening degree is adjustable to be housed.

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