CN2147062Y - Machine tool special for repairing foot screw - Google Patents

Abstract

The utility model relates to a cutting machine tool special for repairing a ground bolt, which is composed of a transmission mechanism, a main rotating shaft, a clamping chuck, and a cutter frame, wherein, a cutter box, a screw rod for a main shaft, and the clamping chuck which are coaxial can automatically center. The utility model has the advantages of small size, light weight, high productive efficiency, and low repairing cost.

Description

Machine tool special for repairing foot screw

The utility model is worn and torn the exclusive-used stock removing machine of foundation bolt screw thread of a kind of reparation.

The bigger plant equipment of general vibration, the connection of its foundation bolt is easy to become flexible, and nut moves back button, through tightening repeatedly, after using, can cause the bolt thread wearing and tearing throughout the year, and nut is threaded off, the consequence that equipment can't be fastening.The foundation bolt that common many employings more renew solves this type of problem.For some heavy mechanical equipments, when its foundation bolt is when being cast in the reinforced concrete basis, desire the foundation bolt that more renews, can only the former basis of explosion, manufacture the new basis of new foundation bolt and cast again.This scheme is not only wasted a large amount of human and material resources, and holding time is longer, has a strong impact on the continuity of production, and this produces load production operation unit big or flowing water to some more can bring significant impact and loss.

The purpose of this utility model provides a kind of special purpose machine tool of repairing foundation bolt, and in a short period of time, on original ground, the foundation bolt that double thread has worn and torn is repaired, thereby makes plant equipment fastening again.

This special purpose machine tool at first is mounted and fixed on this lathe on the foundation bolt that is repaired, as shown in Figure 1 in use.Make the axis that is repaired foundation bolt 1 and the dead in line of this special purpose machine tool, cutter box 14 is enclosed within on the foundation bolt that is repaired, transmission device by special purpose machine tool drives, make it around the foundation bolt rotary cutting, and do accordingly and move axially, can on the foundation bolt of former wearing and tearing, cut the screw thread that equates with former pitch that makes new advances again, thereby finish the reparation of screw thread.

As shown in Figure 1, the utility model is made up of frame, rotating mechanism, main rotating shaft, chuck, knife rest, and its transmission system is made up of band transmission, worm-drive and worm drive.Now describe: on the axle of motor 3, small pulley 2 is housed,, drives worm screw 8 and worm gear 5 rotations again by the big belt wheel 7 that V-belt 4 drives on the worm screw spindle nose in conjunction with example shown in Figure 1.Worm gear is installed on the headscrew 9, and the nut 13 of worm drive is fixed on one by key 12 and bolt 10, nut 11 and frame 19.Because machining screw will make to rotate with mobile and do organic the cooperation, but because of foundation bolt is vertically fixed on the basis, so the utility model adopts the cutter limit to rotate around the foundation bolt axis, its axis of edge is corresponding to be moved.In order to finish this action, the worm gear 5 of worm gearing links by dive key 6 and headscrew 9 on this special purpose machine tool.Headscrew 9 is divided into three parts: top is optical axis, and it promptly is a part of headscrew, does worm-wheel shaft again, comes transferring power and motion by the dive key 6 that is fixed on the optical axis.The main shaft stage casing is a threaded portion, and its pitch is identical with the pitch of the foundation bolt that is repaired.The maximum weighted situation of the diameter of screw rod when repairing foundation bolt, and consider the reasonability of the rigidity of main shaft and requirement of strength and overall construction design and determine.The pitch of screw flight is then set according to the pitch that is repaired foundation bolt.For example: when the foundation bolt of reparation M96 * 6, the parameter of headscrew part is T120 * 6, when repairing other specification foundation bolt, only needs replacing headscrew and two parts of adapted nut thereof to get final product.As when repairing the foundation bolt of M48 * 5, then change the headscrew and the nut of T120 * 4 into.With the trapezoidal nut 13 of headscrew adapted, be fixed on one by key 12 and bolt 10, nut 11 with frame 19, when worm gear 5 rotated, because of nut 13 maintains static, headscrew 9 then moved with the pitch of the setting axis along foundation bolt 1 while rotating.The hypomere of headscrew is again the threaded optical axis of a segment trailer.Headscrew is fixed on one by flat key 15 and nut 16 and cutter box 14, thereby having guaranteed that lathe tool is done with headscrew is synchronized with the movement, and makes cutter 17 rotation in accordance with regulations and move to close to tie up to the foundation bolt screw thread of getting on the bus out.Cutter box 14 is separated by 180 ° about it, respectively open one with the measure-alike square hole of knife bar so that lathe tool stretches into the cutter box, foundation bolt to be repaired is processed.The three-jaw self-centering chuck that standard is equipped with in the bottom of this special purpose machine tool connects by screw 20 with the base plate of the frame 19 of this special purpose machine tool, need guarantee the axiality of scroll chuck and lathe during installation.When scroll chuck is tightened on the foundation bolt that is repaired, special purpose machine tool and foundation bolt to be repaired centering, centering voluntarily then, this be since this special purpose machine tool when manufacturing and designing, require cutter box, main shaft bolt frame coaxial line, frame scroll chuck also coaxial line and scroll chuck has the inevitable outcome that characteristic was directed at of centering voluntarily.

The adjustment of the lathe tool depth of cut as shown in Figure 2, a small tool is respectively welded at the square hole place of stretching cutter at the cutter box, push down lathe tool 17 by pressing plate 26 and screw 27, during toolsetting the screw on the pressing plate 26 27 is unclamped, regulate by toolsetting screw rod 25, toolsetting screw rod 25 rotates in the screw of end plate 23 will drive the quiet portion that clamp 22(clamp one end is welded in the lathe tool bar simultaneously) and lathe tool 17 in the square hole of cutter box, move together.After the position of cutter mixes up, with toolsetting screw rod 25 locking positionings, with the screw-driving on the pressing plate 26, lathe tool is compressed again with pressing plate with nut 24.The vertical range of two lathe tools is the pitch half of processed foundation bolt, this is according to stretching tool bore and the position of small tool on the cutter box on the cutter box, guarantees by designing and producing.

When foundation bolt is repaired, can process with two cuttves simultaneously, also can only process cutter with one, adding the man-hour radial load with two cuttves will offset voluntarily, change steadily so headscrew and cutter box are moving, vibrate less, machining accuracy and efficient are all higher, need the radially depth of cut of two cuttves is mixed up but whenever walk a cutter; Add man-hour with a cutter, can save the radially adjustment of the depth of cut of two cuttves, but the stationarity of machine tool running is relatively poor, machining accuracy and efficient are also lower.

After foundation bolt was repaired, though diameter slightly reduces, a kind of annular of adapted, interior inclined special nut but can make its intensity improve, and connect safe and reliable.This is because the special construction of this special nut, make load be evenly distributed on each circle screw thread, be subjected to pulling force by the bolt in the general Bolt Connection, nut is stressed, become present bolt and nut with the result who is subjected to pulling force, the service life of having improved foundation bolt thus.

During use, this special purpose machine tool is directly installed on the foundation bolt to be repaired, and centering and clamping when foundation bolt to be repaired and basic out of plumb, can be operated suitably at several razor-edge liners of base plate underlay of lathe voluntarily.It is little, in light weight that this lathe has a volume, production efficiency height, the advantage that rehabilitation cost is low.For example, when the foundation bolt with a M96 * 6 long 300mm is processed into the bolt of M93 * 6, only use time less than 1 hour.

Description of drawings:

Fig. 1 is the schematic diagram of vertical foundation bolt renovation machine;

Fig. 2 is a cutter box knife rest schematic diagram;

Wherein: 1---repaiied foundation bolt; 2---belt pulley;

3---motor; 4---belt;

5---worm gear; 6---feather key;

7---belt pulley; 8---worm screw;

9---headscrew;

10,11---mainshaft nut set bolt and nut;

12---key; 13---mainshaft nut;

14---the cutter box; 15---key;

16---nut; 17---cutter;

18---chuck; 19---frame;

20---bolt; 21---knife rest;

22---clamp; 23---end plate;

24---locking nut; 25---the toolsetting screw rod;

26---pressing plate; 27---screw.

Typical case's enforcement example of the present utility model is that the foundation bolt of M96 * 6 of the vortex crushing machine of certain factory is repaired into M93 * 6, and when repairing this foundation bolt, the screw thread of the headscrew of usefulness is T120 * 6, threaded portion length 685mm.

Claims (2)

1, a kind of exclusive-used stock removing machine of repairing the foundation bolt screw thread, form by frame, rotating mechanism, main rotating shaft, chuck, knife rest, it is characterized in that rotating mechanism is defeated by the big belt wheel on the V-belt drive worm screw spindle nose by the little band on the motor shaft, drive worm and worm wheel again, worm gear is installed on the headscrew, the nut of headscrew is installed and is fixed on the frame, the other end of headscrew is installed the cutter box, chuck for installing on the framework soleplate, three axis of cutter box, chuck and headscrew are same straight line.

2, according to the described foundation bolt screw thread of claim 1 exclusive-used stock removing machine, it is characterized in that headscrew and nut are removable, its pitch equates with the spiral shell square of processed lower margin screw thread.

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