CN2178590Y

CN2178590Y - Cooling device of CNC lathe drill thrust tool

Info

Publication number: CN2178590Y
Application number: CN 93223637
Authority: CN
Inventors: 杨明灿
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-08-28
Filing date: 1993-08-28
Publication date: 1994-10-05
Anticipated expiration: 2003-08-28

Abstract

The utility model relates to a cooling device of a CNC lathe drill thrust tool, which comprises a knife handle which has an inner hole on the inner side. One end of the inner hole is a closed one way hole, the open end of the one way hole is extended to a clamping head end arranged on the knife handle, the CNC lathe drill thrust tool can be fixedly arranged in the clamping head end, and the other end of the clamping head end is a fixed end used by being fixedly inserted into a knife rest. In addition, a through hole communicated with the inner hole is arranged on the circumference of the knife handle, and a guide seat is sheathed on the circumference of the knife handle which is provided with the through hole. The cutting fluid ejected from the round nozzle can be guided to the inner hole of the knife handle by the guide seat. The cutting fluid can be ejected from the clamping head end and the circumference of the drill bit can be totally covered.

Description

Cooling device of CNC lathe drill thrust tool

The utility model is a kind of cooling device of CNC lathe, is meant a kind of cooling system that is used in drilling cutters especially.

Lathe (LATHE) is the machine-tool of inventing the earliest, use the widest machinery substantially, therefore, someone claims that lathe is the mother of work mechanism, its working range has generally comprised end face, cylindrical, endoporus, gradient, screw thread, curved surface of turner etc., also can be used to do work such as boring and grinding, and these processing all are to utilize the Tool in Cutting workpiece.Because contact just has the generation of heat, so, be the life-span that can prolong cutter, precision and the fineness that increases workpiece during machined into, all need to use cooling system to carry cutting fluid to cool off cutter because of heat that cutting workpiece produced.

For now, the CNC lathe not only can improve the precision of workpiece by a large amount of processing that is used in workpiece, also can once finish the processing of multiple different levels or end face because having the function of automatic tool changer.When having the automatic tool changer function, relatively the utmost point of its structure own needs one and can supply the cutter tower of each cutter combination, please cooperate consult shown in Figure 1, the cutter of being installed on the cutter tower (1) is with facing tool (2) haply, centre drill (3), drill bit (4) ... Deng being main, and all pipelines of the cooling system of described CNC lathe mainly are to be equipped with in the cutter tower, simultaneously, be combined with the nozzle (5) of reservation shape on the described cutter tower (1) again, the cutting fluid guiding of cooling system is sprayed on the cutting tool, reach the effect of cooling and lubricating, and generally cooperate turning cutting tool (as facing tool, hole boring cutter) the square nozzle (51) of Shi Yonging is the precalculated position that is installed on cutter tower (1) ring periphery, an and body that generally is square, cooperating the circular jet nozzle (52) of drilling cutters then is to be installed on the end face of cutter tower (1), and described nozzle (5) all can be adjusted arbitrarily and turns to, position ejection when making cutting fluid cooperate Tool in Cutting is in the hope of reaching the effect of preferable cooling.But, be that drilling cutters cooperates with the use of cooling system nozzle arrangements, still have many not most desirable places, cutting process is had some setbacks, it be the reasons are as follows:

(1) at first, please cooperate shown in Figure 2, suppose it is that the heart in operation bores (3) and is drilled with the centre bore when boring of stub drill (or) at this moment, described centre drill (3) needs to cooperate the shank of tool (6) to install and is locked on the cutter tower (1), and the shank of tool (6) end moulding is a cap body ring edge (61), so that knife edge tower (1), so can slightly protrude from the end face of cutter tower (1) after it is installed, and the cap body ring edge (6a) of this protrusion can have influence on the situation that contacts of circular jet nozzle (52) ejection back cutting fluid (7) and centre drill (3), and this situation can be by finding out among Fig. 2, wherein, the length of described centre drill (3) is generally all short, therefore, often make cutting fluid (7) spray less than centre drill (3) after described circular jet nozzle (52) angle adjustment, not the front end that is sprayed on centre drill (3), be sprayed on exactly and be sprayed onto again on the cap body ring edge (61) on the centre drill (3) that the ring week that can't give centre drill (3), cutting fluid (7) was lubricated completely, cooling.

(2) please cooperate shown in Figure 3, when the length of drill bit (4) is longer, but the fore-end of drilling is with (41), end is represented with (42), the angle of being adjusted when circular jet nozzle (52) is during corresponding to (41) part, the cutting fluid that is sprayed (7) can only be sprayed at the fore-end of drill bit (4), (42) part then spray less than, if adjust and to be sprayed onto (42) part, then (41) part spray again less than, therefore, add man-hour before the brill, cutting fluid (7) can't give drill bit (4) ring and cool off completely in week, lubricated, in addition, if the moderate length of described drill bit (4) can be cut the scope covering that liquid sprays, but because of described cutting fluid (7) is a diffusion type, so it is lubricated completely also can't to give drill bit (4) ring week, cooling.

Therefore, corresponding relation between the CNC lathe cutting fluid of being supplied and drilling cutters and not really desirable in the past, and the most obvious under this unfavorable situation be exactly to produce that cooling effect is not good, lubricant effect is relatively poor, because cooling, lubricant effect is bad, so quickening of cutter abrasion, and add at drill for high-speed and to cause man-hour the frictional heat between drill bit and workpiece too high easily, and make described drill bit produce the situation of heat expansion, and then packing is stuck in the aperture that workpiece is drilled with in advance.

Main purpose of the present utility model is to provide a kind of cooling device of the CNC of being used for lathe drilling cutters, described cutting fluid can be guided to handle of a knife inside, set firmly the position ejection of drill bit again by the handle of a knife front end, and the ring week of drill bit is coated fully, improve its cooling, lubricant effect when drilling.

Main feature of the present utility model is: handle of a knife inside is provided with an endoporus, described endoporus is the unidirectional hole of end sealing, its openend is the chuck end that extends on the handle of a knife, described chuck end sets firmly for drilling cutters, the other end of described chuck end is for to be fixed in the stiff end that uses on the cutter tower for plugging, in addition, the ring week of described handle of a knife is provided with the through hole that is communicated to described endoporus, be arranged with guide bracket and have on handle of a knife ring week of through hole, described guide bracket is and described closely connected cooperation of cutting fluid circular jet nozzle, be directed in the endoporus of handle of a knife so as to cutting fluid,, and the ring week of described drill bit coated fully by described chuck end ejection with described circular jet nozzle ejection.

Utilize cooling device of the present utility model described cutting fluid guiding can be covered in the ring week of drilling cutters, make described drilling cutters can be subjected to the coating of cutting fluid completely, so, described drilling cutters adds man-hour in drilling can be because of comprehensive effect of described cutting fluid, and obtains better cooling, lubricant effect.So, when in case cooling effect during drilling and lubricant effect are all relatively good, just can avoid drilling cutters when drilling, to produce the situation that abrasion are excessive, the heat expansion cutter is stuck, simultaneously, also can allow drilling cutters bear more high-revolving operation, for mutually same drilling cutters, can improve the rotating speed processing of about 20% to 25% under the rated speed operation approximately, whereby when improving the speed and the output of processing.

Below by most preferred embodiment and accompanying drawing the utility model is elaborated.

Shown in Figure 1 is that CNC lathe cutter tower cooperated the three-dimensional appearance schematic diagram of all kinds of cutters in the past;

Shown in Figure 2 is the relativeness schematic diagram of centre drill on CNC lathe cutter tower circular jet nozzle cutting fluid and the cutter chuck in the past;

Shown in Figure 3 is the relativeness schematic diagram of long drill bit on CNC lathe cutter tower circular jet nozzle cutting fluid and the cutter chuck in the past;

Shown in Figure 4 is the perspective exploded view of the utility model preferred embodiment drilling cutters cooling device;

Shown in Figure 5 is that the assembling of the utility model preferred embodiment drilling cutters cooling device is installed on the combination generalized section on the cutter tower;

Shown in Figure 6 is the actuator state schematic diagram of the utility model preferred embodiment drilling cutters cooling device cutting fluid ejection.

At first, please cooperate and consult Fig. 4,5 and 6, as shown in the figure, the cooling device 10 of CNC lathe drilling cutters of the present utility model mainly is to cooperate to be installed on cutter tower 20 end faces 201 of CNC lathe, and the cutting fluid 7 that circular jet nozzle 21 in the cooling system on the cutter tower 20 is exported is guided to drilling cutters 30 peripheries, and the periphery of drilling cutters 30 is coated.Described cooling device 10 includes members such as handle of a knife 11, guide bracket 12 and pad 13.

Described handle of a knife 11 is stair-stepping cylinder, its axial central authorities are provided with the endoporus 111 that runs through, the hole wall car of described endoporus 111 1 ends is provided with internal thread segment 112, and cooperate countersink head screw 113 to lock, make the described end of endoporus 111 form a blind end, the outer peripheral edges of described end are stiff end 114, described stiff end 114 is sheathed to be locked on the cutter tower 20 of lathe, and its next-door neighbour's socket part 115 forms up high stepped, supporting fastening is positioned on the end face 201 of cutter tower 20, correspondence is provided with two arc grooves 1151 on the 115 ring side faces of described socket part, respectively be inserted in an O shape ring 1152 on each arc groove 1151, be arranged with the inner groove 1153 of appropriate depth therebetween, also respectively be provided with a through hole 1154 that is communicated in described endoporus 111 on the isogonism position of described inner groove 1153 side faces.In addition, the openend of described endoporus 111 is the boring 1111 of contracting toward in by outward, its outer peripheral edges are chuck end 116, the outer peripheral edges car of described chuck end 116 is provided with external thread section 1161, the collet chuck 40 and the locking nut 50 that are cooperated for drilling cutters 30 lock, in addition, on socket part 115 peripheries of 116 of described arc groove 1151 and chuck end also car be provided with thread segment 1155.

The circular hole that is axially arranged with perforation 121 of described guide bracket 12, described circular hole 121 is nested with driving fit on the 115 liang of arc grooves 1151 in handle of a knife 11 socket parts, and utilize fixing and locking nut 14 to be bolted on the thread segment 1155 of handle of a knife 11 socket parts 115, described guide bracket 12 is urged on the end face 201 that is positioned cutter tower 20, and the inner groove 1153 of corresponding socket part 115 is concaved with an identical outer groove 1211 on circular hole 121 inwall ring peripheries, so that form a bigger spatial accommodation behind its fit.In addition, outer peripheral edges at guide bracket 12 are extended with connecting base 122, described connecting base 122 fits on the plane of cutter tower 20 end faces 201, vertically be concaved with an elongated slot 123 along it, described elongated slot 123 correspondences are covered in the circular jet nozzle 21 of cutter tower 20, and its with 1211 of outer grooves be provided with one be connected connect draw hole 124.

The soft liner that described pad 13 is made for rubber, and itself and described guide bracket 12 shapes are roughly the same, be provided with a through hole 131 corresponding to guide bracket 12 circular holes 121, the top is extended with extension 132, described extension 132 also is provided with the saturating empty elongated slot 133 of corresponding described guide bracket 12 elongated slots 123, and described pad 13 is sheathed on the stiff end 114 of handle of a knife 11, and is positioned at 201 of guide bracket 12 and cutter tower 20 end faces, so as to improving sealing therebetween, prevent that the cutting fluid 7 of described circular jet nozzle 21 ejections from leaking.

During assembly, please referring again to Fig. 5, the stiff end 114 that at first pad 13 is placed in handle of a knife 11 closely is affixed on the avris of socket part 115, continue to make the circular hole 121 of described guide bracket 12 directly to be inserted in alignment with the socket part 115 of handle of a knife 11, seal by described O shape ring 1152, and make the outer groove 1211 on it relative with the inner groove 1153 of handle of a knife 11.Then, fixing and locking nut 14 is locked in earlier on the thread segment 1155, continuation is inserted in locking on the cutter tower 20 with handle of a knife 11 stiff ends 114, and the elongated slot 123 that makes guide bracket 12 is in alignment with set circular jet nozzle 21 on cutter tower 20 end faces 201, screw described fixedly lock spiral shell 14 again, guide bracket 12 packings are fitted on the end face 201 of cutter tower 20.At last, cooperate drilling cutters 30 and locking nut 50 to be locked on the external thread section 116 of handle of a knife 11 chuck end 116 described group of collet chuck 40.So just finish the utility model cooling device 10 and be installed on assembly working on the cutter tower 20, it should be noted that in addition, described elongated slot 123 mainly is that the CNC lathe that will adapt to different size or pattern uses, because on the general cutter tower 20 set circular jet nozzle 21 with its for the fixing position of handle of a knife 11, can be because of the difference on the specification of board own, and on distance, produce the difference that does not wait, so, utilize elongated slot 123, can topped its scope, and be suitable for the CNC lathe of different type of machines.

During use, please refer to shown in Figure 6, when starting described cooling system, described cutting fluid 7 sprays the elongated slot 123 that enters guide bracket 12 from described circular jet nozzle 21, inject outer groove 1211 via introducing hole 124, the inner groove 1153 of taking advantage of a situation and being full of described handle of a knife 11, then, flow in the endoporus 111 of handle of a knife 11 via each through hole 1154 on the described inner groove 1153, because an end of described endoporus 111 is to utilize countersink head screw 113 to lock the formation blind end, therefore, the cutting fluid 7 that flows in the endoporus 111 sprays through its openend, just spray in the gap via described collet chuck 40, and the formation circumferential ring is overlying on the drilling cutters 30, so, the ring of described drilling cutters 30 week is wholely coated cutting fluid 7.

Claims

1, a kind of cooling device of CNC lathe drilling cutters cooperates to be installed on the cutter tower of lathe, and the cutting fluid that described cooling device is exported circular jet nozzle in the cooling system on the cutter tower guides to the drill bit periphery, and the periphery of drill bit is coated; It is characterized in that described cooling device comprises:

Axially central authorities are provided with the handle of a knife of end sealing endoporus, the outer peripheral edges of described endoporus blind end are for overlapping the stiff end that is fixed on the lathe cutter tower, described stiff end next-door neighbour's socket part forms up high stepped, the surface that fastening is positioned at the cutter tower is supported in described socket part, correspondence is provided with two arc grooves on the ring side face of described socket part, be inserted in an O shape ring on each arc groove, be concaved with an inner groove therebetween, on the described inner groove and be provided with the through hole that is communicated in the handle of a knife endoporus, the outer peripheral edges of described bore openings end are a chuck end for the collet chuck location of drilling cutters, get on the bus and be provided with thread segment in the socket part between described arc groove and chuck end:

Be axially arranged with the guide bracket that connects circular hole, be nested with driving fit on the socket part of handle of a knife, and there is a fixing and locking nut to be bolted on the thread segment of handle of a knife socket part, described guide bracket is urged on the surface that is positioned the cutter tower, and the inner groove of corresponding socket part is provided with an identical outer groove on the described circular-hole internal-wall ring periphery, in addition, being extended with a described connecting base of connecting base in the outer peripheral edges of described guide bracket fits on the plane on cutter tower surface, and vertically be provided with the elongated slot that a correspondence is covered in the circular jet nozzle on the cutter tower along it, be connected the hole of drawing that connects and be provided with between described elongated slot and outer groove.

2, according to the cooling device of a kind of CNC lathe drilling cutters described in the claim 1, it is characterized in that being provided with between described guide bracket end face and cutter tower the pad of sealing usefulness, the circular hole of the corresponding guide bracket of described pad central authorities is provided with a through hole that connects, and the elongated slot of the corresponding described connecting base of another extension is provided with a saturating empty elongated slot;

3, according to the cooling device of a kind of CNC lathe drilling cutters described in the claim 1, it is characterized in that described handle of a knife endoporus adds is drilled with into a through hole man-hour, and on one stomidium wall, be provided with internal thread, pierce a countersink head screw in the described through hole and form a blind end.