CN2132589Y - Working device for ring-shape trough in hole - Google Patents

Abstract

The utility model provides a working device for a ring-shaped trough in a hole. The utility model is characterized in that a tool loading bore on a hollow tool is communicated with a centre hole; the centre hole of the tool bar is provided with an expanding tool bar with a conical section. The utility model has the advantages of simple structure, easy fabrication, low cost, high machining precision, high productive efficiency, convenient operation, etc., being suitable for devices, such as ordinary drilling machines, milling machines, boring machines, etc. to process ring-shaped troughs in holes, especially in small holes.

Description

Working device for ring-shape trough in hole

The utility model relates to cannelure processing unit (plant) in a kind of hole.

Widely used heat exchanger or valve piece part in equipment such as pressure vessel, chemical industry equipment, hydraulic transmission, usually run into need in the hole, the problem of the higher one or more cannelures of requirement on machining accuracy in many apertures particularly, and do not allow hole wall to be scratched, to pull.Process cannelure in this hole, must on the jig boring machine of precision, carry out usually.General workshop does not all have to be equipped with accurate like this jig boring machine.In order to solve this difficulty, utilize common drilling machine, milling machine or boring machine to process cannelure in these holes, must the special frock of design.As: " machine-building " 1991 the 3rd phases, the 35th page of " drilling machine groover " and " mechanical technology teacher " 1991 the 12nd phases the 30th page of " cannelure device in the milled holes " of going up introduction of going up introduction promptly was.Though said apparatus can utilize drilling machine or milling machine to finish the processing of cannelure in the hole, but, they realize grooving processing because all being the eccentric structure that adopts, therefore have following shortcoming: 1st, the centering degree is poor during grooving, is difficult to guarantee the axiality requirement between institute's grooving and the hole; 2nd, the knife bar diameter is less, and rigidity is relatively poor, is easy to generate cutter relieving during grooving, thereby easily causes groove depth, the following shallow mass defect of groove; 3rd, the groover complex structure makes trouble, thereby the frock cost is higher.

The purpose of this utility model is in order to overcome the shortcoming of above-mentioned eccentric structure groover, cannelure processing unit (plant) in a kind of new hole to be provided.

The purpose of this utility model can reach by following measure: the utility model is made up of parts such as the knife bar seat of being with taper shank, knife bar, cutting knife, spring, thread connectors, it is characterized in that knife bar is hollow, dress tool bore on the knife bar is connected with centre bore, places the bloated knife bar that has the circular cone position in the knife bar centre bore.

The purpose of this utility model can also reach by following measure: the dress tool bore that it is characterized in that dress cutting knife on the knife bar is evenly distributed on the knife bar circumference.In the grooving process, the knife bar that expands is stressed evenly, groove that cuts out and manufactured hole axiality height like this.

In order to control the degree of depth of institute's processing cannelure easily, the utility model has also been taked following measure, it is characterized in that being with supporting base on the outside cylinder of knife bar, and an end of supporting base is the plane, and supporting base is fixed on the knife bar with screw and ball.

For the ease of cannelure in the processing aperture, the utility model has also been taked relative measures, it is characterized in that cutting knife is to adorn in the tool bore in the rectangle of knife bar with spring clip hoop.If the open slot of spring clip is made skewed slot, then can prevent cutter effectively, if cutting knife is made double cutting edge, then can process the interior dicyclo groove that portals efficiently, apace.

Below in conjunction with drawings and Examples the utility model is elaborated.

Fig. 1 be a kind of concrete structure of the present utility model partly cut open front view; Fig. 2 is the left-hand partial sectional view of knife bar 4 among Fig. 1; Fig. 3 be another kind of concrete structure of the present utility model partly cut open front view; Fig. 5 be the third structure of the present utility model partly cut open front view; Fig. 4 is the partial sectional view of knife bar 4 among Fig. 3 and Fig. 5; Fig. 6 is the partial view of the bloated knife bar 10 among Fig. 3 and Fig. 5.

Embodiment 1, referring to Fig. 1 and Fig. 2.The cannelure processing unit (plant) is by the tool rest 1 of band taper shank in this hole, knife bar 4, the knife bar 10 that expands, and cutting knife 15, spring 16, external thread sleeve 14, nut 17, guide blot 19, spring 18 and screw 20 are formed.Wherein the centre bore 5 of knife bar 4 is isodiametric through holes, the dress tool bore 6 that is connected with centre bore 5 is screwed holes, external thread sleeve 14 screws in screwed hole 6, the cutter head of cutting knife 15 passes from the centre bore of external thread sleeve 14, spring 16 is between external thread sleeve 14 and cutting knife 15, guide blot 19 and nut 17 are linked together knife bar seat 1 and knife bar 4, spring 18 is between the flange upper surface 9 of the flange lower surface 2 of knife bar seat 1 and knife bar 4 and be enclosed within on the guide blot 19, to the expand upper end and the knife bar seat 1 of knife bar 10 of screw 20 is linked together, the knife bar 10 that expands is positioned at the centre bore 5 of knife bar 4, and its position, termination, lower end is a cone 11.

Embodiment 2, referring to Fig. 3, Fig. 4 and Fig. 6.The cannelure processing unit (plant) is as different from Example 1 in this hole: the 1st, and the dress tool bore 8 of dress cutting knife 27 has two on the knife bar 4, and is evenly distributed on the knife bar circumference.Like this, in the grooving process, the knife bar 10 that expands is stressed even, groove that cuts out and manufactured hole axiality height.According to actual conditions, can also open several dress tool bores more, adorn more several cutting knife, to enhance productivity.The 2nd, on an outside cylinder of knife bar 4, be with supporting base 22, one end of supporting base 22 is planes 23, location basal plane in the time of can making grooving, supporting base 22 usefulness screws 25 and ball 26 are fixed on the knife bar 4, knife bar 4 can rotate in the hole of supporting base 22 flexibly like this, can utilize again and adjust the degree of depth that the position of supporting base 22 on knife bar 4 controlled institute's processing cannelure easily.The other end of supporting base 22 can be made anchor ring 24, and the knife bar rotation just can be obstructed when supporting base is in the limes superiors position like this.The 3rd, the dress tool bore 8 on the knife bar 4 is processed into slot, and cutting knife 27 is bound round in the dress tool bore 8 of knife bar 4 with spring clip 28, dress cutter, withdrawing is all very convenient like this, be particularly suitable for processing the cannelure in the aperture, the open slot 29 of spring clip 28 is made skewed slot, can prevent cutter.If adopt the コ shape cutting knife of double cutting edge, then can process the interior dicyclo groove that portals efficiently, apace.The 4th, the centre bore 7 of knife bar 4 is stepped holes, and spring 21 is equipped with at its macropore position, the knife bar 10 that expands is step axles, the knife bar 10 that expands passes from the centre bore of spring 21, and is pressed on the spring 21, does not then have spring between the flange lower surface 2 of knife bar seat 1 and the flange upper surface 9 of knife bar 4.The 5th, no longer use screw attachment between expand knife bar 10 and the knife bar seat 1, the circular cone position 13 of bloated knife bar 10 is between two faces of cylinder, rather than at the position, termination.All the other structures are identical with embodiment 1.

Embodiment 3, referring to Fig. 5 and Fig. 4, Fig. 6.The cannelure processing unit (plant) is compared with embodiment 2 in this hole, difference is that an end of knife bar seat 1 has axial screw 3, screwing external thread sleeve 31 in the screw 3, this end of knife bar seat 1 inserts in the macropore of knife bar 4 and is pressed on the spring 21, rather than the big end table top of bloated knife bar 10 is pressed on the spring, the knife bar 10 that expands pass the centre bore of spring 21 and external thread sleeve 31 and greatly termination 12 be retained in the axial screw 3 of knife bar seat 1.All the other structures are identical with embodiment 2.

In above-mentioned several hole in the cannelure processing unit (plant), embodiment 2 and embodiment 3 are two kinds of schemes preferably of the present utility model, are particularly suitable for processing the cannelure in the small diameter bore, dicyclo groove in the especially common hole.

The scheme of being introduced with embodiment 2 and embodiment 3 is an example below, illustrates to use the utility model to come the points for attention before the cannelure in the machining hole: 1, should check after bloated knife bar is in the middle of inserting cutting knife whether slide up and down freely; The stretching out distending and shrink whether flexibly of cutting knife; 2, the maximum distending size of cutting knife is the grooving diameter, and the size after the cutting knife withdrawal should just can not scratch, pull endoporus less than the diameter in processed hole; 3, the lower surface of knife bar supporting base and the distance between the cutoff edge are by the degree of depth decision of annular groove apart from the aperture end face; 4, the tapering of knife bar seat taper shank should conform to the tapering in selected machine tool chief axis hole.

When coming grooving with the utility model, at first knife bar seat taper shank is connected with machine tool chief axis, make knife bar and manufactured hole to good position, and insert wherein, the lower surface and the workpiece spot face of knife bar supporting base are just in time sticked, start lathe again, so knife bar begins to rotate, turning handle again, main shaft is depressed the knife bar seat, bloated knife bar is also depressed thereupon, with the cutting knife distending, when knife bar seat flange lower surface and the applying of knife bar flange upper surface, bloated knife bar expands cutting knife to the size that requires, after cutting groove, stop main shaft and rotate, and mention main shaft, under spring action, bloated knife bar also rises immediately thereupon, and cutting knife is floated, and realizes withdrawing along with the contraction of spring clip, knife bar is withdrawed from whole completion of processing from the hole.

In sum, adopt in the utility model machining hole or the cannelure in the pipe, have simple in structure, easy to manufacture, cost is lower, machining accuracy height, production efficiency height use the advantages such as easy to operate, adopt different taper shanks or install spacer shell additional then applicable to drilling machine, milling machine and common boring machine and the used small-sized hand electric drill of pincers worker.

Claims (6)

1, in a kind of hole the cannelure processing unit (plant) by the band taper shank knife bar seat, knife bar, cutting knife, spring, parts such as thread connector are formed, it is characterized in that knife bar is hollow, the dress tool bore on the knife bar is connected with centre bore, places the bloated knife bar that has the circular cone position in the knife bar centre bore.

2, cannelure processing unit (plant) in the hole according to claim 1 is characterized in that the dress tool bore of dress cutting knife on the knife bar is evenly distributed on the knife bar circumference.

3, cannelure processing unit (plant) in the hole according to claim 1 is characterized in that being with supporting base on the outside cylinder of knife bar, and an end of supporting base is the plane, and supporting base is fixed on the knife bar with screw and ball.

4, cannelure processing unit (plant) in the hole according to claim 2 is characterized in that cutting knife is to adorn in the tool bore in the rectangle of knife bar with spring clip hoop.

5, according to cannelure processing unit (plant) in claim 1 or 2 or the 3 or 4 described holes, the centre bore that it is characterized in that knife bar is a stepped hole, and spring is equipped with at its macropore position, and bloated knife bar is the step axle, and the knife bar that expands passes and is pressed on the spring from the spring center hole.

6, according to cannelure processing unit (plant) in claim 1 or 2 or the 3 or 4 described holes, the centre bore that it is characterized in that knife bar is a stepped hole, spring is equipped with at its macropore position, one end of knife bar seat has axial screw, screwing external thread sleeve in the screw, this end of knife bar seat inserts in knife bar macropore and is pressed on the spring, bloated knife bar pass the centre bore of spring and external thread sleeve and greatly the termination be retained in the axial screw of knife bar seat.

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