CN201120480Y - Coaxial large-span ear base hole boring auxiliary device - Google Patents

Abstract

The utility model relates to a boring auxiliary device for a coaxial large span ear base hole. The auxiliary device comprises a lengthened toolbar, a transition support sleeve and a bearing, the transition support sleeve is inlaid in an ear base hole on a structural part which is machined by a common short toolbar and is near to the end face of the main shaft of a machine tool, a bearing support sleeve is inlaid in a round hole on the bearing, and the lengthened toolbar goes through the transition support sleeve and the bearing support sleeve respectively and is assisted and supported by the two parts. Applying the auxiliary device to a large-sized boring and milling machine can process the coaxial large span ear base hole on a large structural part and guarantee the coaxial degree of the coaxial ear base hole and the center distance and parallel degree between central lines of the un-coaxial ear base hole. After applying the auxiliary device on a large structural part such as a base seat of a drill for implementing the boring machining to the coaxial large span ear base hole, a derrick and a boring platform are connected on the base seat, therefore the auxiliary device has advantages of high assembling precision, small fit clearance, smoothness when in use, reducing the installation workload greatly and improving the installation work efficiency.

Description

Coaxial big span ear base hole boring auxiliary device

Technical field

The utility model relates to the machining servicing unit, specifically is a kind ofly to go up axiality and require the coaxial ear seat hole high, that span is bigger to carry out the servicing unit of boring processing usefulness as heavy, superduty sledge dress oil-well rig basis seat at large-sized structural parts.

Background technology

Base is the important component part of oil sledge dress rig, comprise basis seat, rig floor, be used for installing each functional part of sledge dress rig, the basis seat is as the basic components of rig, and rig floor, derrick etc. is installed in basic and goes up and be connected by ear seat, otic placode with the basis seat.When rig floor, derrick installation, to rotate freely with respect to the basis seat and hoist, therefore the basis seat is gone up and between the coefficient ear seat of same axis hole the axiality requirement is arranged, and corresponding basis seat is gone up between the out-of-alignment ear seat centerline hole centre-to-centre spacing dimensional requirement and depth of parallelism requirement.Heavy, superduty skid rig basis seat width is generally between 2.2～3.1 meters, about 13 meters of length, belong to large-sized structural parts, because the width of basis seat is bigger, being welded on basis seat, to go up between the coaxial ear seat of width span bigger, can't be by centre-to-centre spacing size and depth of parallelism requirement between axiality and the out-of-alignment ear seat centerline hole between the conventional machined realization ear seat hole.In the prior art, adopt smallclothes ear seat, the independent bore hole of otic placode to machine usually after, the ear seat is on basis seat, otic placode is joined weldering and is realized connecting on derrick, rig floor, guarantee rotating freely when parts such as derrick, rig floor hoist with this.This preparation method exists the assembly working amount big, and precision is low, and fit clearance is big, and product is easily vibrations in use, many shortcomings such as inefficiency.

Summary of the invention

The purpose of this utility model provides a kind of coaxial big span ear base hole boring auxiliary device, be specially adapted to coaxial big span ear base hole boring processing on this class large-sized structural parts of rig basis seat, can satisfy the requirement of centre-to-centre spacing size and the depth of parallelism between the axiality, out-of-alignment ear seat centerline hole in coaxial big span ear seat hole on the structural member.

For realizing that the technical scheme that the utility model purpose is taked is:

A kind of coaxial big span ear base hole boring auxiliary device, it is characterized in that: comprise lengthening knife bar, transition support set, bearing, described transition support set is set in the structural member upper ear seat hole of the close boring spindle end face that passes through common short sword bar processing, has circular hole on the described bearing, stud with the seat supports cover in the circular hole, rest base is fixed on the boring table, and described lengthening knife bar passes the transition support set respectively, the seat supports cover carries out supplemental support by the two.

On large-scale boring and milling machine, use this servicing unit to requiring the whole bore hole processing of carrying out in coaxial big span ear seat hole, workpiece clamping once on lathe, the position of workpiece on lathe no longer adjusted in the process, utilize the numerical control system of lathe precisely to locate, designed and produced lengthening boring machine knife bar, by transition support set and seat supports cover the lengthening knife bar is carried out two place's supplemental support, reduced the jerk value when knife bar rotates, rigidity when strengthening knife bar work, logical each hole of boring survives; Can guarantee to require the axiality in coaxial ear seat hole, can guarantee that centre-to-centre spacing, the depth of parallelism between the different axis ear seat centerline holes meet the demands simultaneously.Adopt this servicing unit after carrying out coaxial big span ear base hole boring processing on this class large-sized structural parts of seat of rig basis, carrying out the installation on the seat of basis of derrick, rig floor connects, the assembly precision height, fit clearance is little, steady in the product use, can guarantee that rig floor, derrick rotate freely with respect to the basis seat hoists, and has significantly reduced installation workload, has improved installment work efficient.

Description of drawings

Fig. 1 is the utility model servicing unit application structure schematic diagram on the seat of rig basis.

Fig. 2 is Fig. 1 vertical view.

Fig. 3 is this servicing unit structural representation.

Fig. 4 is that the A of bearing among Fig. 3 is to view.

The specific embodiment

Go up coaxial big span ear seat hole boring pin with heavy sledge dress rig basis seat below and be processed as example, in conjunction with the accompanying drawings the utility model is further described.

Fig. 1, Fig. 2 are heavy sledge dress rig basis holder structure schematic diagrames, the basis seat is about 13 meters, wide about 2.2 meters, some groups of ear seats are arranged on it, be used for derrick, rig floor between ear seat, otic placode be connected, for guarantee derrick, rig floor relatively the basis seat rotate freely the installation that hoists, between one group of coaxial ear seat hole higher axiality requirement is arranged, between the parallel every group of ear seat centerline hole of axis centre-to-centre spacing dimensional requirement and depth of parallelism requirement are arranged.Be processed as example explanation servicing unit structure of the present invention with the ear seat hole boring pin of one group of coaxial ear seat 1a of left side, 1b, 1c, 1d below and use this servicing unit and carry out coaxial big span ear seat hole boring pin method for processing.

As shown in Figure 3, Figure 4, servicing unit comprises lengthening knife bar 4, be bumped into the transition support set 5 in the hole of the ear seat 1d by the close machine tool chief axis end face after the common short sword bar boring processing, be supported on lengthening knife bar other end bearing 6, stud with seat supports cover 7 in the circular hole on the bearing 6, lengthening knife bar 4 passes transition support set 6, seat supports cover 7 is realized supplemental support by these two support sets, and the lengthening knife bar is connected with machine tool chief axis 5, and boring cutter piece 9 is contained on the lengthening knife bar.

Using this servicing unit carries out coaxial big span ear seat hole boring pin processing on the basis seat at large-scale boring and milling machine and takes following steps: each ear seat 1a～1d, 2a, 2b, 3a～3d etc. of 1. leaving ear seat hole allowance on the seat of basis by each ear seat position welding; 2. the basis seat is installed on the platen; 3. common short sword bar is installed on large-scale boring and milling machine main shaft 9 will be bumped into transition support set 5 in the machining hole then near the hole boring one-tenth of the ear seat 1d of main shaft 9 end faces; 4. lengthening knife bar 4, erection support 6 are installed on main shaft 9, and lengthening knife bar 4 passes transition support set 5, seat supports cover 7; 5. the hole of the Kong Yuer seat 1d of centering bearing 6 is coaxial, is fixed bearing 6 bases on platen, with this lengthening knife bar 4 is carried out supplemental support twice, increases the rigidity of lengthening knife bar 4, reduces its jerk value in the rotary work process; 6. at the lengthening boring cutter piece 8 of packing on the knife bar 4, continue boring processing is carried out in the hole of ear seat 1c, distal ears seats such as 1b, 1a, survive up to size; That 7. in like manner processes other respectively organizes hole on ear seat 2a, 2b and 3a, 3b, 3c, the 3d etc.

Use the coaxial big span ear seat hole axiality that this servicing unit processes and can satisfy the drawing requirement on large-scale boring and milling machine, centre-to-centre spacing, the depth of parallelism that out-of-alignment is respectively organized between the ear seat centerline hole also can meet design requirement.

Claims (1)

1, a kind of coaxial big span ear base hole boring auxiliary device, it is characterized in that: comprise lengthening knife bar, transition support set, bearing, described transition support set is set in the structural member upper ear seat hole of the close boring spindle end face that passes through common short sword bar processing, has circular hole on the described bearing, stud with the seat supports cover in the circular hole, rest base is fixed on the boring table, and described lengthening knife bar passes the transition support set respectively, the seat supports cover carries out supplemental support by the two.

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