DE1477040A1 - Tool holder for rolling tools - Google Patents

Description

Detroit Tap and Tool Company, Warren, Michigan / United States of America

Tool holder for rolling tools

The invention relates to tool holding devices, especially on holders for tools, such as those used for forming threads Rollers.

The tool holder according to the invention is particularly suitable for use in known automatic shaping machines intended for rolling threads. However Eiteren of v /, the inventive device is also suitable for the implementation of pre PRECISION knurled and -Polierarbeiten, as well as for the rolling of oil grooves, splines, and the like. In these operations, the molds usually with the aid of corresponding brackets in the Machine built-in carriages, so that they can be attacked or released from a piece of work by moving them accordingly.

909814/003

BATH ORIGINAL

can do that with the help of a putter is firmly placed on the machine spindle so that it is relative to the molding tool or Form tools rotates.

In the ideal case, the tool holder should be kept as small as possible in order to ensure that it is installed to take up a minimum of space, so that it can also be used in small work areas can be. In addition, the tool holder should also be designed so that it can hold tools different sizes can be used without any substantial changes being made to it must be, and it should also be used to hold large tools. The distance between the forming tool on the one hand and the chuck holding the workpiece on the machine spindle on the other hand are reduced as little as possible in order to reduce the load on the spindle during the To achieve the work process. A standardization of the holding device, with the help of which these devices in the A wide variety of G-ew ind ef or mm machines can be attached without any changes to the soles or brackets would be required to very substantial savings in the construction and

9 814700

Tent and cost expenditure required for installation · In addition, the brackets should preferably be in the machine and in the work area inside of a maximum adjustment range and only require a minimum of Einatellvorgänge with the simplest possible manipulations, so that the risk of a Error through which the tool is brewed from its position or the like., Is largely eliminated. If tools that are assigned to one another in pairs, for example thread rolling tools, are held on the tool holder in such a way that they deform at the same time are brewed to attack on a work piece and cooperate in this doorway to achieve a uniform result, then appropriate synchronization means must also be provided, which on mb'gllohst In a fair way between the tools to have an effect and only a minimal adjustment or adjustment « need, but at the same time are extremely reliable in operation · The task is accordingly of the invention is essentially to provide a tool holder for roll forming tools with spaced apart arms or legs, which between form a kind of work space. On these legs are according to the invention in each case corresponding to Support of the roll forming tools serving pins.

9098 U / 0 034 _{ORIQlNAL lNSrecTED}

In addition, funds are also provided for adjustable mounting of these pins are used, so that the pins towards and away from each other or on the work area, movable to and from it are.

In its preferred embodiment, the inventive Tool holder within a large area easily for holding tools of different sizes Size can be used · This result is standardized by simple adjustment accordingly Reached spacers and their associated pin. For this purpose, the actual tool holder expediently only consists of a minimal one Number of ropes, but nonetheless an extraordinary number of different settings in the work sbereioh enabled.

In particular, there is the tool holder AusfUhrungsform the invention of only three parts with two associated plates, which by a part selected from a number of standardized spacers can be held at a distance from one another. In order to be able to accommodate the greatest possible variety of thread rollers with different diameters

9098U / 0034

INSPECTED

U77Q40-

the trees intended for tool holders each have one have maximum depth »with special mounting precautions are provided, with the help of which Walaen smaller and larger Durohmessere equally well on one and can be attached to the same tool holder.

The invention is explained in more detail below using an exemplary embodiment with reference to the drawings. Show it"

Figure 1 is a plan view of a Yferkzeughalter according to the invention for molding tools, for example for thread rolling tools j

Figure 2 is a section along the line 2-2 of Figure 1} Figure 3 is a section along the line 3-3 of Figure 1} FIG. 4 shows a section on the line 4-4 of FIG. 1 j FIG. 5 shows a sonity along the line 5-5 in FIG. 1

and
FIG. 6 shows a section along the line 6-6 in FIG.

Figures 1 and 3 show a tool holder 10, which is attached to a connecting block 12 of a sole 14 of a automatic thread forming machine or the like under With the help of a dovetail 16 and a Be £ e ~ Stigungsplatte 18 is attached. Appropriate fasteners 20 and 21 hold the tool holder in place

BATH ORIGINAL

909814/0034

and note, Ia general, the tool holder 10 a base body 22, as well as legs 24 and 26 which are located at a distance from one another and extend outward which form the actual work area 28 between them. The legs or arms are each forked and are used to hold thread rolling jaws 30 and 32, which in turn are each designed in the form of cylindrical rollers and are rotatably mounted on the journals 34 and 36. During a thread rolling operation, the Tool holder by the carriage 14 of the automatically operating deformation machine relative to one in a Offset rotational movement, workpiece W located in the work area 28 can be moved. The workpiece itself is with the help of a chuck 38 (see Figure 3) so held on the masohine spindle that it is with this rotates.

The tool holder 10 consists of standardized, dismantled and interchangeable individual parts, with two associated, spaced apart plates 40 and 42 and with one as a spacer acting block 44. As can be seen in particular from Figure 1, the outer circumferential shape of the base body these plates and the spacer each in the same way and these ropes together form the dovetail connection 16. The plates are on the spacer

9098U / 0034

fastened with the aid of appropriate fastening bolts 46, 48 and 50 »52. The spaced apart plates form the forked loops, which are preferably tin and have the same circumferential shape. Corresponding tool chambers are thus formed between the spaced apart plates and the end face of the block forming the spacer. Arched walls 54 and 56 each extend from the side walls of the spacer up to a centrally arranged web part 5B ₁ which terminates on the rear side of the work area 28 and separates the tool chambers from one another. The web 58 thus provides a continuous spacing between the plates 40 and 42 from the back of the tool holder to the work area, so that the diameter of the curved walls 54 and 56 can be selected so that exceptionally deep tool chambers are obtained. The durohmeters are dimensioned in such a way that the curved walls would intersect if they were extended into the working area 28. Accordingly, with the tool holder according to the invention, molding tools of maximum diameter can also be used up to the point at which the diameter of the molding tools themselves is so large that the two tools would interfere with one another.

■ 9098U / 0034.

Such an arrangement enables extraordinarily within further limits the use of molds of different sizes when using one and the same tool holder.

In addition, devices for holding relatively small molds are also provided, whereby the size range of the one and the same Tool holder for tools that can be used is increased even further. For this purpose are used to Attachment of a pin 34 specially designed sockets or inserts 60 and 62 are provided. How in particular As is clear from the insert 60 in FIG. 1, these inserts each have an annular design Perimeter sections 64 and 66 which extend through to each other parallel flat sections 70 are connected to one another. There is also a recess in each of the inserts 72 is provided, which is used to receive and hold the ends of the pin 34. These recesses are included eccentrically formed between the hanging segments 64 and 66 in the insert, so that / at one end a relatively narrow wall section 74, and at the other end a relatively strong> 7andungsabsohnitt 76 is created. Correspondingly designed recesses serving to accommodate these inserts are in the

9098 U / 003 A ORtG.NAL.NSPECTED

Plates 40 and 42 are provided. The centers of the recesses thus formed in the inserts are each offset from the slat of the retaining leg in the direction of the work area 28.

A holder is provided for each use, with the aid of which the narrow wall sections 74 and the wide wall sections 76 can be adjusted in such a way that the position of the pin 34 relative to the work area 28 and the workpiece W is between a maximum and a minimum Distance is adjustable} this is done for the purpose of being able to use relatively large jj'orων; Erkseuge in one position and relatively small molding tools in the other setting. At the bottom of the inserts, annular retaining flanges 78 and 79 are provided, which rest on the annular shoulders 80 and 81, which in turn are formed on the plates 40 and 42 as shown in FIG. Slots 82, 83 and 84, 85 arranged opposite one another run radially through the inserts and serve to accommodate the adjusting screws 86 and 87, which are screwed into the bores 88 and 89. The bores 88 and 89 in turn end on the side wall of the tool holder so that the screws are easily accessible for tightening and loosening. In addition, the setting

9 0 9 8 U / 0 O 3 4 ^BAD original

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also screw on the pin 34 and hold it with the aid of the corresponding on the holes 88 and 89 on opposite side of the tenon formed flats 90 and 92 in place. Accordingly, the position of the pin 34 is between two each determining a different distance Positions can be easily adjusted by moving the inserts 60 and 62.

Furthermore, adjusting means are also provided, which allow multiple adjustment of the distance from the molding tool and workpiece and also the spacing of the mold parts to each other in each of a certain distance determining, given by the eccentric inserts Enable settings. The multiple adjustment device is assigned to the other pin 2ό and has elongated slot-like recesses 96 and 98, which are formed within the plates 40 and 42 as shown in FIG. V / ie from Figure 1 As can be seen, these recesses each have opposing circular circumferential sections 99 and 100, which are separated from one another by the mutually parallel side walls 102 and 104. The ilitte the slots 96 and 98 are preferably toward the work area 28 relative to the center of the leg

BATH ORIGINAL

of the tool holder. So when the cone 36 in slots 96 and 98 in its outermost position at section 100 of the tool holder facing away from the work area, the center of the falls Pin 36 approximately coincides with the center of the leg. In this way it is achieved that form rolling with a large Durohmesser can be used just as well as molds of smaller diameter and that a maximum adjustment range is given. Further it should be noted that the trajectory of the adjustment movement of the pin 36 is along the longitudinal centerline in the slots 96 and 98 in the direction of the workpiece runs outside and below and that also the longitudinal center line of the inserts 60 and 62 is at a similar oblique angle.

The ends of the pin 36 engage in the slots 96 and 98 a, the parallel wall sections 102 and 104 rest essentially on the circumference of the journal shaft. The diameter of the pin is much smaller than the Durohmesser of the circular sections 9S and 100, so that. the position of the pin in the slot along the flats 102 and 104 in the direction of the bracket sections 9S and 100 can be changed to and from these. For locking the pin in any position in

9098U / 0034

In the slots, the adjusting screws 108, 110 and 112, 114- are screwed into the recesses 113, 119 and 115 »116 in the plates 40 and 42, respectively. The recesses or bores 113 and 115 end on the side walls of the tool holder so that they are readily accessible at any time; the bores 119 and 116 are, as shown in FIG. 1, beveled towards the outside towards the working area 28, so that here too the pin is readily accessible, but at the same time care is taken to ensure maximum retention of the pin. In addition, the flattened areas 117 and 118 are preferably formed on the ends of the pin opposite the adjusting screws 108 and 112 , so that the pin and adjusting screws come to rest with one another.

In order to achieve precise operational synchronization of the thread forming rollers 30 and 32, a G gear is provided in the tool holder, which connects the rollers to one another accordingly. The countershaft here has the gears 120 and 122 , which are rotatably mounted on the journals 34 and 36 in recesses 126 and 128 formed in the plate 42. The gears 120 and 122 in this case have axially outwardly projecting have and are corresponding to the illustration of Figure 6 under feed

9098 U / 0034 _{owsinal 1NSpECTE0}

using radially outwardly projecting lugs 130 and 132 frictionally connected to rollers 30 and 32. The recesses 134 and 136 each formed in the hub part 138 or HO of the rollers serve to receive them of the approaches 130 and 132. The recesses 134 and 136 are essentially somewhat wider than the approaches 130 and 132, so that the gears have a certain amount of play with respect to the rollers. To have 138 and 140 springs 142 and 144 are wrapped around, which the lugs normally in abutment against the side walls of the Hold recesses so that a winding forming process occurs during the G-ewindeformvorganges made on the workpiece by the rollers frictional engagement with the rollers is established. Another object of the invention is, however also, if necessary, to enable a relative movement between the orphans and the gleberwheels, like this is necessary, for example, when the rollers are now being brought into contact with the workpiece and one roller comes into contact with the workpiece before the other roller. The spring ends 146 and 148 can ^ it be connected with the orphan and the gearwheel, so the gear wheel and tool in the one shown in Figure 6 Position to press.

BAD ORSGINAL

9098U / 0034

The gear reduction is completed by the gears 150, 152 and 154 · which intersect in each other Recesses 156, 158 and 160 are made in the plate 42. The gears 150 and 154 are in the recesses 156 or 160 stored. This storage takes place with the aid of the fastening bolts 162 and 164, the shaft 166 of which corresponds to the illustration in the figure 5 is made thinner at the end. The whole plate 42 is covered by a plate 170, so that the gear reduction is enclosed in a kind of housing. The cover 170 has recesses 171 and 172 in which Protective covers 173 attached to the bosses of the gears 120 and 122 are arranged. These protective shields move radially with the pins 34 and 36 as soon as the pins are adjusted so that they one Form protection against the ingress of chips and the gear reduction in all positions of the pin 34 and 36 close tightly.

As can be seen from the illustration of]? Igur 4, this is elit Gear 152 rotatable on the shaft 174 of the ± 5 bolt 176 stored. A sleeve 158 defines a shoulder 180 for one side of the gear while on the other Side of the gear the plate 170 a support shoulder 182 forms. There is a snap ring around the shaft of the bolt

9098H / 0Ö34 bad

184 and the part 186 of the bolt handle is in a recess 188 formed in the spacer 44 is screwed in.

The tool holder is unusual for holding a large variety of rollers of different widths suitable; this is made possible simply by an Place the spacer 44 among a number of others similarly designed spacers of different widths corresponding to any other spacer is selected and deployed. They only have other tool holder parts that may be necessary for attachment of spacers of different widths also nooh need to be replaced are the tenons. The fact that standardized pins of different lengths are provided, the replacement of the individual Parts are greatly simplified. In addition, none of the parts of the adjustment mechanism, the gearbox or the synchronization device to be replaced. The plate 40 is kept as thin as possible and is substantially thinner than the plate 42. The dioke of the plate 40 can thereby be reduced so much be that all gear parts are embedded in the plate 42 and the number of in the plate 40 intended actuators reduced as much as possible

9098 U / 0034

will. As a result, the tool holder can be brought very close to the chuck of the machine. In this way it is achieved that the loads to which the machine spindle is exposed during operation, can be largely reduced because the distance between the contact point of the mold and workpiece and the connection with the spindle is kept very small. In addition, as a result of the spacers Given the exceptionally deep tool chambers, rollers with a larger diameter are also used, and thus workpieces larger Surohmessers can be processed than with the known thread roll holders of comparable size was possible. Only two standardized tool holder sizes can be used all standard threads formed from a # 10 thread to a 1 1/8 inch (2.9 om) thread will.

You attaching the eccentric inserts on one of the Tool holder pins and with the help of adjusting screws feasible simple adjustment on the other pin allow easy adjustment of the lower one Roller. If no freely floating arms or the like are provided, the adjustment measures are essential simplified. You can adjust a roller between the two eccentric positions while

9098U / 0034

ORIGINAL INSPECTEO

the other roller due to the arrangement of the simplified Stellsohraubeneinriohtung in their recesses as desired is continuously adjustable.

So it was with the aid of the device according to the invention for example possible with one tool holder one and the same size tools for form rolling threads liiit the Kr. 10 up to threads of 3/4 inch (1.9 cm), as well as with a larger tool holder of the same training tools zuu form rollers of threads in size 1/4 to 1 1/8 in. (0.6 to 2.9 om) for use bring. Standard spacers 44 with a thickness of 1, 1 1/4, 1 1/2 and 1 p / 4 inch (2.54, 3.2, 3.3 and 4.45 cm), and standardized spacers in one for the larger tool holder JrOiJe of 1 1/4, 1 1/2, 1 3/4, and 2 inches (3.2, 3.8, 4.45 and 5.1 CLi) strength provided. The length of the smaller one Tool holder measured from front to back as shown in Figure 3, is approximately 3 inches (7.5 cm) while the length of the larger tool holder is about 3 3/4 in. (9.5 cm). The width of the tool holder measured from side to side (see Figure 1) is approximately 3 3/4 inches (9.5 cm) on the smaller tool holder and about 5 3/4 inches (14.6 cm) for the larger tool holder. The depth of the tool holder under reference

BATH ORIGINAL

9098U / 0034

would take on the representation of Figure 3 of each other measured from opposite sides of panels 40 and 42 is approximately 2 1/4 inches (5.7 cm) on the smaller one Tool holder and 2 3/4 in. (7 cm) for the larger tool holder. The thickness of the plate 40 is approximately 7/16 in. (1.1 cm) for the smaller Y-tool holder and only 5/8 in. (1.6 cm) for the larger tool holder. Since the plate 40 is immediately adjacent to the face of the chuck in an automatic G-ev / indwalzmaschine is attachable, the distance to the connection between spindle and workpiece is reduced accordingly and thereby the load exerted on the spindle is largely reduced. As can be seen, so was with the invention created an extremely compact tool holder that can be used to hold tools, with their Help an unusually large variety of threads of varying sizes and lengths can be made.

Due to the spring connection between the gear wheels 120, 122 and the rollers 30 and 32, there is a reliable synchronization between the rollers, regardless of the situation which roller comes to rest on the workpiece first. This synchronization device is between the two roles provided and therefore comes regardless of the position of the rollers to each other and to the workpiece among all possible Investment Conditions to Effect.

9098U / 0Ö3i

BAD ORiCHNAL

Claims (1)

Claims 1. Tool holder for roll forming tools with a work area between enclosing legs, characterized in that on each leg Pins (34 »36) are attached, which serve to hold the roll forming tools (30, 32) and which are each in such a way are adjustably arranged that they towards each other and away from each other, as well as on the work area (28) can be moved towards and away from this. 2. Tool holder according to claim 1, characterized in that the adjusting movement of the pins (34, 36) along inclined paths that are not parallel to each other. 3 * tool holder according to claim 1 or 2, characterized in that that the first and the second pin (34, 36) each separately in the direction of the work area 28 to and from this are adjustable. 4. Tool holder according to claim 3, characterized in that the holder for the first pin has an insert (60, 6 ?.} in which the first pin (34) is held eccentrically and which can be rotated and adjusted by an angle of 180 ° is so the distance 9098U / 0034 of the pin held by him to the work area (28) to adjust. 5. Tool holder according to claim 4 »characterized by a recess with the help of which the eccentric Eineatz (60, 62) is also held in the inverted position can be, whereby the position of the first pin is adjustable between a maximum and a minimum distance to the working area (28). 6. Tool holder according to claims 3 »4 or 5» daduroh characterized in that the holder for the second pin (36) has an elongated recess (96, 98) with substantially parallel side walls (102, 104) facing towards the working area (28) run obliquely outward with reference to a line connecting the center points of the first and second pegs, the second peg being adjustable and lockable in the recess. 7 * tool holder according to claim 6, characterized in that that the second pin (36) can be adjusted in the recess (96) with the aid of adjusting screws (110, 108) and is ascertainable, which is screwed in from the opposite ends (99 »100) of the recess (96) and are brought into contact with the pin (36). 9098U / 0034 OWGlNAL 8. Tool holder according to claim 7 »characterized in that that an adjusting screw (108) lies parallel to the side walls (102, 104) of the recess (96) and is on the second pin (36) engages, while a further adjusting screw (110) on the second pin at an angle comes to the plant that to the side openings of the recess runs obliquely inwards. 9. Tool holder according to one or more of the preceding claims, characterized in that it has two im Has spaced apart carrier plates (40, 42), which by a block-shaped spacer (44) iu be kept at a distance from each other, and that the Legs formed by these plates and the retaining pegs attached to the legs and suitable for the rotatable mounting of G-thread rolling tools. 10. Tool holder according to claim 9, characterized in that the plates (40, 42) and the spacer (44) together tool chambers with curved side walls (54ι 56) form behind the retaining pin (34> 36) and whose diameter is dimensioned such that the curved walls would cut in their extension between the thighs. BATH ORIGINAL ^c "'9 09 8 U / 0 03 4 1.1. Tool holder according to claim 9 or 10, which is in an automatic machine with a putter connecting the workpiece to the machine spindle is characterized in that one of the plates (40) is made substantially thinner than the other plate (42) and can be attached to the machine directly next to the chuck. 12. Y / tool holder according to claim 11, characterized in that that the thickness of one plate (40) is less than 2.5 cm, preferably between 1.1 and 1.6 cm 13. Tool holder according to claims 9 »10, 11 or 12, characterized in that the width of the space between the plates (40, 42) can be changed in this way is that between the plates Y7 tools different Width that can be attached so that the spacer (44) can be removed and is replaced by a spacer of the same design but greater width. 14. Tool holder according to one or more of the preceding Claims, characterized in that each gear (120, 122) is connected to the rolling tools (32, 30) are, and that effective synchronization means (150, 152, 154) are provided which ensure that 9 0 9 8 14/00 3 k bad original the rolling tools during a molding process over the Q-gear connection are correctly synchronized. 15 · toolholder according to claim 14 'characterized in) that a driving connection between the gears (120 _t 122) and the two roll forming tools (30, 32) a limited relative movement of the orphan (30, 32) permits to the gears and to the respective other roller. 16. Tool holder naoh claim 15 »characterized» that the drive connection has a shoulder (130 » 132) in a recess (134 »136) intended to accommodate it and forming a base for it» wherein the width of the recess is chosen to be greater than the width of the approach »so that the approach is relatively can move to the soleplate surface and a spring (146) normally presses the extension against the soleplate surface in such a way that a non-positive connection is thereby established is established between the gears and the rollers, but the spring also allows a movement of the extension in a position raised from the stop surface, so that you can move the gears without you also moving the rollers at the same time 9098U / 0034 17 · Tool holder according to claims 15 or 16, characterized characterized in that a recess is provided in the tool holder for each of the gear wheels and: these recesses overlap each other so that a cover plate (170) is attached to the tool holder ^,! j which has two recesses (172, 171) extending radially to the pin, and that two protective covers (173) are arranged in the recesses and are displaceable with the pins in such a way that the in the recesses The gear wheels mounted in the tool holder are enclosed in a kind of housing 18. Tool holder only rotatable holder of thread rolling tools, ' characterized by spaced apart retaining plates, one between these plates attached block-shaped spacers, two also located at a distance from each other and through the Plates formed support legs, provided in the legs axle bearings and by two attached in the retaining legs and trunnions suitable for rotatably supporting thread rolling tools, the plates and the block-shaped spacer corresponding tool chambers with arcuately curved and behind the axle bearing Form lying side walls and the diameter of the arcuately curved side walls in such a way 9098U / 0034 is dimensioned that βich the extension lines of these Sidewalls between the sons of the sons. 19. Thread rolling device, marked duroh a Tool holder »because of the spaced apart thread-forming rollers, because of the fact that they are attached to the tool holder, for the rotatable mounting of the rollers serving pins, furthermore an effective between the rollers and during the rolling process of these driven gear and duroh the gear each with the Drive means connecting rollers, which is limited Allow relative movement of the individual rollers to the gearbox and to the respective other roller. BATH ORIGINAL 90 9 8 U / 0 03 4