CN87101953A

CN87101953A - Bearing arrangement for portable lathe

Info

Publication number: CN87101953A
Application number: CN 87101953
Authority: CN
Inventors: 杰拉尔德·范德普尔
Original assignee: Tri Tool Inc
Current assignee: Tri Tool Inc
Priority date: 1987-03-13
Filing date: 1987-03-13
Publication date: 1988-09-21

Abstract

A kind of light lathe tool includes amalgamation ring fixing and rotation, and retainer plate is fixing in tubular work, and the rotation circle can rotate with it relatively, and a cutter is installed above, when driven circumference around workpiece is movable, can process workpiece.Disclosed and a kind ofly supported the relatively supporting arrangement of rotation circle at retainer plate, wherein had a support ring that the branch of clivus bearing surface is arranged, engaged with the back-end region of rotation circle, will rotate circle do with respect to retainer plate axial, radially with direction of rotation on location and guiding.Be provided with an adjusting device, make the position of support ring do accurately location and adjusting with respect to retainer plate, with compensate for wear and change in size.

Description

The present invention is relevant with portable lathe, the supporting arrangement of concrete relevant portable lathe.

Implement the type of portable lathe of the present invention, the BP of announcing in for example No. the 4th, 418,591, United States Patent (USP) and on September 29th, 1976 all has narration the 1st, 450, No. 774.In this United States Patent (USP), disclose the supporting device for sluing mechanisms of lathe saddle, in this BP, disclosed a kind of ring that the sliding bearing face is arranged.

In the stationary annular supporting arrangement that discloses such as this BP, the wearing and tearing between the relative sliding element of formation knife rest bearing-surface are difficult to maybe can not be compensated.And because each supporting member, in the axial direction relative to each other fixing, the adaptation that dimensional tolerance is changed also has problem.

The present invention proposes a kind of improved swivelling tool-holder ring-shaped bearing device, its design is similar to BP elaboration above-mentioned, a kind of adjusting device of concrete proposition, make the knife rest support ring can make axial adjustment, to adapt to wearing and tearing, and with the rotation circle part of instrument, with the part that the relatively-stationary and workpiece of instrument contacts, the accurate relative positioning of making comparisons.

A kind of adjusting device of the concrete proposition of the present invention with respect to knife rest and setting tool structure, is done accurately location with support ring, thereby counterrotating knife rest can accurately be located with it, and by with respect to fixing tool housing, axially, radially with on the direction of rotation lead.

Accompanying drawing thes contents are as follows:

Fig. 1 is for implementing the rearview of light lathe tool of the present invention;

Fig. 2 is top view of the present invention among Fig. 1;

Fig. 3 is the front view of instrument shown in Figure 1;

Fig. 4 is the cutaway view along the 4-4 line of Fig. 1;

Fig. 5 is the cutaway view along the 5-5 line of Fig. 1;

Fig. 6 is the cutaway view along the 6-6 line of Fig. 1;

Fig. 7 is the cutaway view along the 7-7 line of Fig. 1.

Referring to accompanying drawing, Fig. 1-3 shows enforcement light lathe tool 10 of the present invention, will do more detailed narration hereinafter.As shown in these views, instrument has one first annular ring, just the stationary annular circle 12, and its longitudinal axis is 14, enclose 12 dimidiations, generally tighten together with suitable hinge and fastener, shown among the figure 16, this belongs to general traditional form in light lathe tool, so that preparing to add man-hour as pipe fitting, instrument can be separated, tubular workpieces 18 is put into.Tubular workpieces (this figure does not show) is placed along axis 14 usually, and is fixed with folder pad folder in circle 12, more is described in detail with reference to Fig. 7 below.Fig. 2 shows screwed hole 20, holds the traditional fastening bolt that is used for the workpiece fixed bolster, and the workpiece fixed bolster is located workpiece and centerings with respect to circle part 12 around the periphery of circle part 12.

As shown in Figure 4, the second annular ring spare, just rotary annular circle spare 22(is called swivelling tool-holder in the art), rotatable being installed on the circle part 12, having external tooth 24 can be with pinion 26 engagement of drive motors 28, generally is installed in the installing zone 30 on the circle 12 in Fig. 1 and 2 by machine 28.Drive motors is only made summary signal, the overall relation of expression and portable lathe in Fig. 4.The longitudinal centre line coaxial line 14 of circle part 22 overlaps, thus the relatively with one heart rotation of circle 12 of the second circle part 22.

There is a suitable knife rest 32 generally to be fixed on the front surface (Fig. 4 right side) of circle 22, it is fixing and do feed motion with respect to circle part 22 with cutter head 34 that it has proper device, so that the tubular workpieces that is positioned at

circle

12,22 looping pit center is carried out turning processing.The feed arrangement of cutter head 34 for example can comprise a traditional pocket-wheel 36, and it and the relatively-stationary pin 38 that is installed on the circle 12 are meshed.This knife rest and feed arrangement are traditional form, and itself does not constitute substantial portion of the present invention.

Circle 22 has front and rear, is respectively 39,42, and there is a cannelure 43 at rear portion 42, and the bearing-surface 44 that favours axis 14 is arranged.Anterior 39 bearing-surfaces 46 that a front support face 40 arranged and enclose 22 front portions together, will circle 22 with respect to circle 12 in vertical forward direction location and guiding.

One the 3rd circle part, just adjusting ring spare 48, are installed in the cannelure 50 on the circle 12, and it can axially slide in this groove, thus a sloping bearing surface 52 of the 3rd circle part 48 is with rear support surface 44 contacts of circle 22.Implement light lathe tool of the present invention sloping bearing surface 44 when running well, 52 engage one another, position adjustments with the 3rd circle 48, when therefore working as bearing-

surface

44,52 joints, preceding thrust bearing-

surface

40,46 also engage, and from making circle 22 axially, radially with direction of rotation on, with respect to the accurate location of circle 12.The configuration of the sloping bearing surface 52 of the 3rd circle part 48 can accurately cooperate with the rear support face 44 of circle part 22 it, thereby keeps the axis of this rear support face 44, when tool work, overlaps with longitudinal axis 14.

Preferably will enclose 12 thrust bearing-surface 56 is arranged on the stop ring 54, or correlate with it, stop ring 54 can have the thrust bearing-surface 46 of a consubstantiality, also bearing-surface 46 can be arranged on the annular bearing element 56 of a separation, and thrust bearing-surface 46 is set on it.

Circle 22 is similar with circle 12, at least in two, clamps with suitable securing member 58, and every other annular element for example encloses 48,54 and 56 and all does similar amalgamation, thereby whole lathe tools sub-assembly can be opened, and continuous tubular workpieces is put into by conventional method.

As shown in Figure 6, the 3rd circle part 48 can utilize the axial-adjustment unit of

set screw

60,62, and it is axially movable to do in slotted eye 50.Set screw 60 is arranged (see figure 1) set screw 62 in pairs by the mode around axis 14, is placed between every pair first set screw 60.Set screw 60 usefulness screw threads are screwed in the circle 12, and set screw 62 passes the hole on the circle 12 loosely, screws down at the 3rd circle, just on the adjusting ring 48.When whole set screws 60 during to a direction rotation, with the 3rd circle, namely adjusting ring 48 pushes away forward, and when set screw 62 during to a direction rotation, then enclosing 48 to pusher.When

screw

60 and 62 is screwed round about, opposite effect is arranged certainly, only the counter-rotating of screw 60 provides gap backward for enclosing 48.Whenever necessary can be in circle 48 back, this puts ring 63 of sclerosis and so on, and the load of set screw 60 is had the opposite effect.

In the running, generally screw set screw 60, circle 48 is pushed away forward, thereby bearing-surface 44 and 53 is contacted with each other, during circle 22 is decided relatively with circle 12, and thrust bearing-surface 40 pushed away forward, until it has contacting of sliding relation with bearing-surface 46.Can see clearly that the 3rd circle 48 position can regulate arbitrarily, adapting to the variation of wearing and tearing and size, and the adaptive temperature condition.

When rotation circle 22 took place with respect to the rotations of retainer plate 12, thrust bearing-

surface

46,40 was used for enclose 22 in axial location, the place ahead, and cooperates bearing-

surface

44,52 for enclosing 22 in axial rearward direction, locates in direction of rotation and the radial direction.

As can be seen from Fig. 7, mounting mat 64 usefulness bolts 66 are installed on the retainer plate 12.Mounting mat is generally used traditional form, to enclose 12 and accurately locate on tubular workpieces, workpiece is placed in the interior space of circles of circle 12, thereby makes the axis of circle cause coaxial line with this workpiece amplification, and relative stiffness is fixed with it, thereby can accurately carry out the machining of workpiece.

Various bearing-surface described herein can be made with self-lubricating or lubricant impregnation material, or with being provided with the precision machined surface of proper lubrication agent for the source.

Although desirable embodiment of the present invention has been done as above to narrate and illustrate, it will be appreciated that these as an illustration desirable embodiment and proposing, purpose and any aspect that does not lie in invention scope limit to some extent, and invention scope should be determined according to following claims.

Claims

1, a kind of light lathe tool, comprising:

First lap spare with a longitudinal axis and opposite end in the axial direction;

One second circle part, the longitudinal axis that it has the longitudinal axis of and this first lap spare to overlap, it is installed on the end of opposite end of this first lap spare, around the axis of the second circle part, with respect to the rotation of first lap spare, the second circle part has axially goes up relative leading section and rearward end;

Be used for this second circle part axially, radially with direction of rotation on, with respect to the adjustable support face of first lap spare location and guiding;

This adjustable support attachment includes the 3rd a circle part that can move radially, and it is concentric with this first lap spare, and with the second rearward end placed adjacent of enclosing part;

The 3rd circle part has the radially thrust area supported of an inclination on its front end, engage with the rearward end of this second circle part, with this rearward end axially, radially with on the direction of rotation locate and guiding, this rearward end of this second circle part has a radially thrust bearing-surface, and it encloses the radially configuration unanimity of thrust bearing-surface of part with the 3rd;

Enclose part at least on direction of advance, with the 3rd along the axial device that promotes of first lap spare longitudinal axis;

This second circle part has a preceding thrust bearing-surface;

This first lap spare has a preceding thrust bearing-surface, thrust bearing-surface unanimity before configuration reaches in shape with this second circle part;

This first and second circle part should before the thrust bearing-surface, with the 3rd circle part at least axially location and a guiding.

2, the light lathe tool described in claim 1, this device that the 3rd circle part is in the axial direction mobile includes the 3rd circle part mobile device forward and backward in the axial direction.

3, the light lathe tool described in claim 2 wherein in the axial direction forward and backward in mobile this device, has actuation element separately with the 3rd circle part.

4, the light lathe tool described in claim 3 should actuation element separately be threaded element wherein, became the form of annular array, and the longitudinal axis that centers on first lap spare is installed on the first lap spare.

5, the light lathe tool described in claim 4 wherein should include (1) one or more first set screws in the actuated piece separately, was screwed in the first lap spare, when advancing with respect to first lap spare, initiatively drove the 3rd circle part forward; (2) one or more second set screws are inserted in the first lap spare loosely, and are screwed into the 3rd circle part with screw, when rotating with respect to first lap spare, drive the 3rd circle part backward.

6, the light lathe tool described in claim 5, this first and second set screw comprises a plurality of set screws of annular alternate with each other around the axis arranged of first lap spare.

7, the light lathe tool described in claim 6, this first set screw (one with a plurality of) is placed around the longitudinal axis of first lap spare, spacing is arranged on circumference be arranged in pairs, this second screw (one or more) is arranged between every pair first set screw of spacing.