CN2275005Y

CN2275005Y - Grinding tool for straight groove and screw groove

Info

Publication number: CN2275005Y
Application number: CN 96248920
Authority: CN
Inventors: 沃克詹克
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-12-04
Filing date: 1996-12-04
Publication date: 1998-02-25
Anticipated expiration: 2006-12-04

Abstract

The utility model relates to a grinding tool for a straight groove and a screw groove, which comprises a mandrel which can conduct screw rotation and reciprocating movement through adjusting; a rotor which can be engaged with the external surface of the mandrel as a definite contact force and can rotate and adjust around the radial direction of the mandrel; the rotor can move back and forth and can conduct axial adjustment through a first starting device; the rotor can resist spring force and keep friction, contact, and engagement with the mandrel; a locking device which is used for fixing an angular position of the mandrel can cause the mandrel to be locked from the position of releasing the mandrel to a second position through a second starting device, and the first start device can automatically release as an axial advancing position of the mandrel.

Description

Straight trough and spiral fluted grinding tool

The utility model relates to a kind of straight trough and spiral fluted grinding tool that grinds and be used in the cutlery milling drum for the cutter nose angle again.

The main body of general grinding instrument comprises rotatable and the reciprocal axle of (but not comprising the mechanical rotation of admitting cutlery to be ground), can make axle drive cutlery during the grinding and produce required spiral action (can adjust pitch by the change and the set angle of the rotor of axle friction engagement), this kind of means is disclosed in Deutsche Bundespatent No. 3232689.

When a cutlery with several helical form blades is carried out sharpening as cylindrical end face milling cutters, must after cutting, first sharpening make live spindle turn over other sword of certain angle grinding with relative first sword, this first sword is corresponding to an imaginary zero plane by the axle longitudinal axis, discuss with No. the 2503926th, United States Patent (USP), friction engagement relation between axle and rotor is separated, and axle is turned to new position, angle by a locking device that serves as indication device, axle makes axle fix in new position, angle by locking device once more, then remedy by the locking device that is contained in rotor on the axle and separate type is installed for the grinding of follow-up each sword, it is very consuming time to adjust operation.

Therefore, primary and foremost purpose of the present utility model is the device that is to provide a kind of the above-mentioned type, and the formation of this device is relative simple with operation, adjusts the angle of throat angle and slips up with safety and in fact can not producing operating operation than existing apparatus is more rapid.

The technical solution of the utility model is to provide a kind of straight trough and spiral fluted grinding tool, comprising:

One outer cover,

The workpiece or the tool mandrel of one tool, one main shaft and an outer surface, described axle are rotatable and can run through this outer cover, so that described axle can be carried out a spiral and ahead running,

One rotor defines one and adjusts axle, and described rotor is with the outer surface engagement of an adjustable contact pressure and axle, and described rotor is rotatable and can be around spool regulating that a phase center roller radially extends,

One indication device is used for fixing the different angle position of described axle, it is characterized in that:

Described rotor is set to and can moves up and down along this adjustment direction of principal axis by one first starting drive, the elastic force of described rotor antagonistic spring device and keeping and the engagement of the CONTACT WITH FRICTION of this axle, described indication device can discharge and the second place that moves to axle is locked from a primary importance of axle by one second starting drive, described indication device is by being setovered with spring in primary importance, and this indication device more comprises the device that is used for discharging according to the described second place of described indication device described first starting drive.

In above-mentioned instrument: described first starting drive can comprise one first electromagnet, described first electromagnet comprises first switching device that is remained on resting position at least by a spring, rotor is remained on an operating position, and wherein said second starting drive comprises one second electromagnet, described second electromagnet comprises the second switch device that is remained in resting position at least by a spring, remains in an operating position to indicate pin with one;

It comprises that also one is used for described first starting drive is provided the normally closed contact of electric current, described normally closed contact can be disconnected according to moving axially to an initial grinding position by axle, and after connecting one first normal opened contact, described second starting drive can be through one second normal opened contact, describedly be used for first normal opened contact of described second normal opened contact of bypass and be energized effect.

By above technical scheme as can be known, the utility model can be by the lifting of magnet control rotor, and the angle locking device done of institute shape can work as axle and be in the appropriate location time in time with axle in a certain angle, thereby can under the cooperation of automatic control loop, make the set-up procedure of each knife face of workpiece more become easy and rapid.

Further specify specific structural features of the present utility model and purpose below in conjunction with accompanying drawing.

Brief Description Of Drawings:

Fig. 1 is a schematic appearance of the present utility model.

Fig. 2 is a profile of the present utility model.

Fig. 3 is the schematic circuit diagram of the utility model two starting drives.

Fig. 4 is the schematic diagram of the control panel of the utility model one embodiment.

Fig. 5 is the arrangements of components figure of the circuit board of the utility model one embodiment.

Fig. 6 is the circuit diagram of power unit of the circuit board of the utility model one embodiment.

Fig. 7 is the control circuit figure (1) of the circuit board of the utility model one embodiment.

Fig. 8 is the control circuit figure (2) of the circuit board of the utility model one embodiment.

As shown in Figure 1, grinding tool of the present utility model comprises the pedestal 42 of an adjustable angle, one is arranged on the bearing 41 on the pedestal 42, one is arranged on the outer cover 4 on the bearing 41, the pitch that is arranged on outer cover 4 tops is adjusted button 22, one laterally runs through the axle 14 of outer cover 4, one passes through connecting rod 144 connects the turn-button 143 that turns this axle 14, one is positioned at the chuck 141 that axle 14 front ends are used to clamp the workpiece 142 (as: milling cutter) of desiring grinding, one dial 581 and for inspecting axle 14 angles that is arranged on these chuck 141 rears can be locked in axle 14 locking device 53 of special angle.

Above-mentioned grinding tool forms a kind of anchor clamps that lock workpiece 142, and this workpiece is being carried out the grinding of knife face corresponding to this workpiece 142 positions one milling drum, so that workpiece 142 each knife face form special angle, and the helix of each knife face is adjusted by the spiral adjustment button 22 at body top on the workpiece 142, and when each knife face is carried out grinding, set by turn-button 143 that rotates the rear and the corner of inspecting dial 581, and the utility model grinding tool inside also is provided with two groups of starting drives that include electromagnet and microswitch, whether can control action that spiral adjusts button 22 and locking device 53 automatically, and the adjustment period between, only need be by travelling workpiece 142 to inner side, just locking and the release movement that can carry out a series of automation by touching inner microswitch, so that it is more simple, convenient and rapid to adjust the operation of workpiece angle, the while is also reduced error rate.

As shown in Figure 2, one two-piece type is led

brush

5,6 are installed in the outer cover 4, receivability one axle 14 is so that by ball dish 7,8 and leading the brush 5, axially move and rolling in 6, the outer surface 15 of axle 14 is connected with the rotatable rotor 16 that is installed in the bearing fork 18 by a bearing bolt, bearing fork 18 also can move up and down in outer cover 4 by a ball bearing 20 supportings, this two relative leading brushes 5, one free space 9 is arranged between 6, in bearing fork 18 grooves 19 that are set in the outer cover 4, and has a projection 21, the adjustment dish 22 that this projection 21 and one is placed on the outer cover 4 closely links, supply fixedly adjustment dish 22 by a locking piece 32, and by a compressing tablet 21a and a spring square position 21b and the projection 21 of connection bearing fork 18, this structure formation is a kind of can be lifted rotor 16 but not change the lengthwise movement mode of rotor 16 deflection angles from the outer surface of axle 14.

One thrust bearing 25 is arranged on projection 21 places, one pressing plate 26 as switch element acts on the thrust bearing 25, pressing plate 26 places in another groove 28 of outer cover 4, groove 28 is wideer than groove 19, another admits a dividing plate 30 than groove 28 wideer grooves 29, one locking piece 32 is installed on the dividing plate 30 adjustablely, and therefore,

groove

19,28 and 29 forms one and extends to the cascade groove of leading

brush

5,6 in outer cover 4.

What be connected with pressing plate 26 is four and is arranged on and leads

brush

5,6 separated isolation bolts 35 outside and that extend by the holes in the outer cover 4, the opposite end that isolates bolt 35 is threaded into an anchor plate 36, this anchor plate 36 forms the some of one first starting drive B1, and being positioned to adjacently with an electromagnet M1, this starting drive B1 is set in the groove 38 of outer cover 4 and by cover plate 39 sealings of directly extending along outer cover.

Spring 43 and the coaxial setting in blind hole 41 of isolation bolt 35, as shown in Figure 2, pressing plate 26 is by spring 43 jack-up and form the breach (gap) of about 2mm upwards, when the electromagnet M1 of starting drive B1 is in not excitatory state, pressing plate 26 lifts on bearing fork 18, therefore, do not exist between rotor 16 and axle 14 outer surfaces and contact pressure, under the electromagnet M1 of starting drive B1 is in by excitatory state, rotor 16 can be after locking piece 32 be released, be adjusted to the required helical angle state of workpiece to be ground, after adjustment, also fixed by locking piece 32.

The required helical angle of workpiece to be ground can be known from chart, workpiece whenever revolves the millimeter distance that turns around corresponding to one of adjustment dish 22 specific adjustment angle, yet, the position, angle of the adjustment dish 22 that workpiece place one existing helix angle is required also can directly be adjusted by a scale range, when the electromagnet M1 of starting drive B1 when excitatory, the direction that anchor plate 36 is opposite with pressing plate 26 and bearing 25 with isolating bolt 35 moves, so rotor 16 can contact with the outer surface 15 of axle 14.

End at the outer cover shown in Fig. 2 right side 4, with respect to axle 14 board 50 is installed rotatably, board 50 can be locked in relative adjustment position by the dog screw 52 with half slot engagement, one locking device 53 for this axle 14 of locking is fixedly attached to board 50, this locking (or sign) device 53 comprises that one indicates pin 54, but this sign pin 54 is arranged to the diametric(al) of phase center roller 14 and is done telescopic moving up and down, indicate pin 54 and remain on its resting position (retraction) by a spring 55, in this resting position, the tapering point 56 that indicates pin 54 can move apart a sign that is fixed on the axle 14 and coil equally distributed conical socket 59 on 58 circumference, thus the locking of unclamping center roller 14.

Locking device 53 more comprises a starting drive B2, it has an electromagnet M2 equally, when electromagnet when excitatory, to indicate pin 54 by a switch element 60 generations with spring 55 opposite effect power and be moved downward to the described operating position of Fig. 2 (latched position), the bottom tip portion 56 that wherein indicates pin 54 is engaged in the conical socket 59 of sign dish 58, thereby locking spindle 14 makes it and can't rotate or be shifted, as shown in Figure 2, this position promptly is called " initial grinding position ", these 57 end faces with board 50 of support lug that are provided with the axle 14 of sign dish 58 keep a preset distance (gap), in the present embodiment, this distance is about 2mm, by the described position of Fig. 2, axle 14 can be moved axially about 128mm towards the right side, so the whole axial freedom of the motion of outer cover 4 inner axis of heart 14 is 130mm.

Board 50 also comprises a normally closed contact K1, and it can be started pin 63 by one and disconnects when axle 14 is positioned at high order end position shown in Fig. 2, that is the startup pin 63 of normally closed contact K1 is subjected to pressing in the sign dish 58 and moving inwardly, thereby makes its two contact be off state.

Shown in the electrical schematic diagram of Fig. 3, aforementioned normally closed contact K1 is the part of circuit for this reason, it comprises a power supply Q, a potentiometer P1, and the magnetizing coil M2 of a magnetizing coil M1, the starting drive B2 of starting drive B1 and additional make and break contact K2, K3, K4 and K5.

In Fig. 3, make and break contact K2 is a switching switch, it can be connected in series on first switching position with make and break contact K3, and make and break contact K3 is a pulse switch, and it can remain on open position by a spring, change-over switch contact K2 is when the second switching position place, pulse switch K3 when this make and break contact K2 is in first switching position, promptly is in " automatic operation mode " then by bypass, and cut when being allocated to second switching position then expression " manual operation mode ".

The normally closed contact K1 that is connected in series to make and break contact K5 can be by make and break contact K4 bypass, therefore, the function of normally closed contact K1 can be come bypass by make and break contact K4 and K5, potentiometer P1 can regulate the exciting current numerical value of the electromagnet M1 of starting drive B1, and therefore adjusts the contact pressure that rotor is resisted against axle 14 outer surfaces 15.

The helix pitch of the set angle of rotor 16 and axle 14 can be regulated by adjustment dish 22 according to the helical angle of grinding cutlery blade, workpiece inserts the tapering point 65 of axle, in order to adjust helical angle with adjustment dish 22, locking piece 32 must loosen, and after the helical angle adjustment finishes, locking piece 32 locks adjustment dish 22 once again, and the adjustment of helical angle only just can be carried out under the situation that starting drive B1 is opened.

By sign dish 58, the blade of workpiece can be moved to the angle position new with respect to emery wheel to, axle 14 can be directly be moved to the left by initial grinding position shown in Figure 2 makes its support lug 57 be subjected to leading till brush 6 stops, therefore, being positioned at inner normally closed contact K1 is subjected to sign dish 58 and starts pin 63 pressing and being off state, because normally closed contact is moved to open position, tie shown in Figure 3 as described above, for making the first starting drive B1 be no current state, can mat spring 43 make rotor 16 by the lifting that makes progress of axle 14 positions reliably, so far, axle 14 forms release conditions, preparation is adjusted to new angle position, in order to avoid improper wearing and tearing take place between axle 14 and rotor 16 surfaces.

When indicating operation, look the situation of each knife face of workpiece to be ground, axle 14 rotated and adjust to after the new angle position, the second starting drive B2 be subjected to one as described above the pulse switch pattern normal opened contact K3 control down and be automatic open close, make the sign pin 54 of locking device be moved down into (locking spindle) on its normal operating position under the excitatory state at the second starting drive B2.

Adjust axle 14 to new angle position in rotation, indicating pin 54 is meshed with the corresponding recesses 59 that sign is coiled on 58 circumference, that is be engaged in sign and coil on the central hole location set on 58 circumference, it is the initial position shown in Fig. 2, therefore the normally closed contact K1 that before had been the first starting drive B1 of release conditions is connected once more, as a result, starting drive B1 is by excitatory once more, and rotor 16 is moved into axle 14 by above-mentioned switch element and contacts.

After the aforementioned first starting drive B1 is excitatory, this pulse switch K3 can be discharged once more, therefore the second starting drive B2 recovers to be no current state, and indicate pin 54 and bounce back to resting position, so axle 14 just can be subjected to the emery wheel grinding to produce axial displacement in grinding process and make axle 14 do a screw by the angle that rotor 16 tilts, therefore, axle 14 can be adjusted under the automatic control of aforementioned two starting drive B1 and B2 easily, and need not the extra mode of controlling and requiring great effort, and can suitably reduce the error rate of adjustment, and the contacting pressure and also can adjust easily by aforementioned potentiometer P1 of

rotor

16 and 14 of axles.

The circuit of earlier figures 3 only is in order to explanation the utility model, and concrete enforcement then can be referring to the embodiment circuit diagram of Fig. 4～8.Wherein, Fig. 4 is for controlling aforementioned first, the second starting drive B1, the control panel of B2, be respectively power switch Q0 from left to right in the panel top, function switch knob S1 and control the potentiometer R12 that aforementioned rotor 16 and axle 14 press power indirectly, this function switching button S1 that is positioned at the panel middle position is divided into four sections, first section and second section are for respectively for the usefulness of setting this second starting drive B2 and the first starting drive B1, when forwarding first fragment position to, then can press the manual button S4 of the sign pin lifting of the aforementioned second starting drive B2 of key control by two of panel lower left, S3, the difference of this two button is that button S4 is the touching switch, cycling between rising/decline when at every turn pushing, and button S3 is for being similar to power switch, be pressed into and represent that promptly locking device 53 is in mode of operation, and when button loosens, locking device 53 is remained static; When function switching button S1 is located at second fragment position, but then button S6, the S5 of bottom-right two controls of the panel first starting drive B1 are operating state, can be through rising or the decline operation by the pressure-controlled first starting drive B1; And function switching button S1 is located at the 3rd section or the 4th section and is changed to expression " control automatically " pattern, and two kinds of mode difference only are to trigger or by a pedal switch triggering with axle.

Function switching button S1 is being located under the 3rd section the automatic control mode, at first be that the axle among Fig. 2 14 is pulled to lowest position towards the left side, at this moment, can touch this normally closed switch K1, and the electromagnet M1 that makes the first starting drive B1 is the no power state, therefore, can make inner rotator 16 be release conditions automatically, at this moment, can make workpiece to required grinding angle by manual type live spindle 14, axle 14 is passed once towards the left side, this normally closed switch K1 is touched once once more, and when this touches for the second time, then can be by the effect of aforementioned pulse switch K3, automatically make the electromagnet M2 energising of locking device 53 and sign pin 54 is moved in the groove 59 of sign dish 58, at this moment, even axle 14 is positioning states, make the electromagnet M1 automatic energising of first starting drive B1 make rotor 16 recover with axle 14 be in contact with one another state thereafter and through the contact-making switch K4 of Fig. 3, then, make the electromagnet M2 outage of the second starting drive B2 again and make sign pin 54 bounce back to resting position, after the step of aforementioned automation locking and releasing, can carry out the grinding of workpiece this moment.

Fig. 5 is the element schematic diagram of osseous part control circuit board, and Fig. 6 to Fig. 8 then is respectively power supply circuit, automatic control loop and drive circuit of indicator.

In above-mentioned automatic control mode, operating period only need be passed axle and mandrel to the step of special angle and be got final product, and rising/following degradation operations of all the other relevant rotor risings/decline, locking device are automated manner and finish and need not the manual type intervention, compare simplified operation step and reduction operating mistake rate with traditional grinding tool.

Claims

1. straight trough and spiral fluted grinding tool comprise:

One outer cover,

The workpiece or the tool mandrel of one tool, one main shaft and an outer surface, described axle be rotatable and run through described outer cover,

One rotor defines one and adjusts axle, and described rotor is with the outer surface engagement of adjustable contact pressure and axle, and described rotor is regulated around the axle that a phase center roller radially extends,

The indication device of the different angle position of one fixing described axle is characterized in that:

Described rotor is set to move up and down along described adjustment direction of principal axis by one first starting drive, the elastic force of described rotor antagonistic spring device and keeping and the engagement of the CONTACT WITH FRICTION of described axle, and described indication device discharges and the second place that moves to axle is locked from a primary importance of axle by one second starting drive, described indication device is by being setovered with spring in primary importance, and described indication device comprises that the more described second place according to described indication device discharges the device of described first starting drive.

2. instrument according to claim 1, it is characterized in that: wherein said first starting drive comprises one first electromagnet, described first electromagnet comprises first switching device that is remained in resting position at least by a spring, rotor is remained in an operating position, and wherein said second starting drive comprises one second electromagnet, and described second electromagnet comprises the second switch device that is remained in resting position at least by a spring.

3. instrument according to claim 2, it is characterized in that: it comprises that also a pair of described first starting drive provides the normally closed contact of electric current, this normally closed contact can be disconnected according to moving axially to an initial grinding position by axle, and after connecting one first normal opened contact, described second starting drive is energized effect through one second normal opened contact and described first normal opened contact.

4. instrument according to claim 3 is characterized in that: wherein said second normal opened contact is an impulse contact.

5. instrument according to claim 3 is characterized in that: further comprise one at three normal opened contact of described normally closed contact for the described normally closed contact of when open circuit bypass, wherein said normally closed contact is opened and closed by the 4th normal opened contact that a series connection connects.

6. instrument according to claim 3 is characterized in that: the initial grinding position when wherein said axle is moved to and is switched on respect to normally closed contact.

7. instrument according to claim 2 is characterized in that: the wherein said first starting drive tool, one adjustable support force.

8. instrument according to claim 2, it is characterized in that: comprise that further one is installed on the Y-piece in the described outer cover, described rotor is for being rotatably mounted in the described Y-piece, wherein said first switching device is a pressing plate, and described pressing plate keeps rotor to contact with the outer surface of described axle under the influence of described first starting drive.

9. instrument according to claim 1 is characterized in that: wherein said indication device comprises that one is installed on the sign dish on the described axle and coils interactional one with described sign and indicates pin, and described sign pin discharges on described sign dish by a spring.