JPH02503076A - Collet/adapter assembly - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Collet/adapter assembly Snowscape of invention The workpiece is usually removed by bolting the workpiece to the face plate of the lathe. , or attaching the workpiece to a chuck or tension collet. It is held so as to rotate together with the main shaft of the lathe.

Until now, in order to use a collet, it was necessary to remove the chuck on the lathe. . This is time consuming and therefore undesirable to change from chuck to collet. It usually takes more than an hour to complete. Changing from a chuck to a tension collet is dangerous. There is also. The lathe chuck is 80-90 bond (approximately 36-ukg) and needs to be replaced. The user must lean over the lathe to install and remove the chuck. No, therefore there is a risk of injury when changing from chuck to collet. .

From this point of view, many, if not all, modern lathes are component that allows vertical lifting of the chuck in a non-invasive manner. It is important that we are doing so. Thus, the chuck, when it is attached, It has become necessary to constantly remove the material manually from the lathe.

In a conventional configuration, the collet clamps the piece pressing the jaws of the collet. For this conventional lathe, it is pulled into the adapter by the lathe's drawbar. The tool support system of If the draw rod of the lathe is retracted without being turned, the collet will stop the lathe mechanism. , has a serious drawback. This will destroy the collet and/or damage the lathe. there's a possibility that.

Summary of the invention We have now invented and disclosed a novel collet/adapter assembly. this is , the downtime and risk of damage caused by the chuck-to-collet change request. It is possible to operably connect a pulling collet to the main shaft of a lathe without having to do so.

This new assembly allows collet installation without removing the lathe chuck. However, it does not include conventional tension collets, spindle noses, and collet adapters. nothing.

The collet is slidably mounted within a bore extending from end to end of the spindle nose. and the spindle nose is fixed to the chuck of the attached lathe. write In this case, the collet rotates with the latter but is immovable in the longitudinal direction.

One end of the spindle nose passing through the bore has a tapered shape on the outside of one end of the collet stain. Tailored to fit. Therefore, moving the collet within the spindle nose As a result, the jaws of the collet are pressed or squeezed together and the collet to secure the tool or workpiece in the tray.

Opposite ends of the collet are threaded into a collet adapter. This adapter The holder then moves the radially extending jaws of the chuck in and out. , screwed into the sliding part that can move linearly B, which is placed in the chuck of the lathe. There is. The linear movement of the sliding parts that actuate the chuck jaws is achieved by conventional, usually liquid It is carried out by a pressure-actuated pull rod. Therefore, it is not possible to move the drawbar of the lathe. Accordingly, the collet of the new collet/adapter assembly described above is It can be pulled into the main axis nose of the body and pressed together with its jaws. , thereby securing the tool or workpiece within said collet.

Another feature of our new collet/adapter assembly is that the lock on the spindle nose It is the whole. These locking portions are in the movement path of the jaws of the chuck and are Limits the retraction of these jaws when the jaw/adapter assembly is installed. are doing. Due to the limited retraction of the chuck jaws, the collet adapter is then connected. Movement of the connected chuck sliding part is restricted. As a result, the pulling valve of the lathe is A tension bar applies the tension of the lathe to pull the collet into the spindle nose. When the rod is retracted, the collet is pulled into the spindle nose to the point where it is damaged. prevent it from becoming entangled.

Often the stained end of the collet has a larger tool than without the bore. The bore is hollowed out to hold the workpiece. Accordingly, the ring The collet may be removed and then reinstalled as long as the environment warrants. Become.

The other important feature of our invention in this aspect is that the collet can be reattached - around its longitudinal axis, both longitudinally and rotationally; Contrary to m- a novel design that positively and precisely places the collet in the same position. It is a collet/adapter. Each time said collet is reinstalled, the workpiece between the longitudinal axis of the bore receiving the base and the axis of rotation of said collet; This is important to ensure that there is a heart-to-heart connection. Therefore, the above collection The workpiece fixed in the collet is The relationship between the axis and the axis of rotation of said part is random and therefore these two Tighter tolerances allow the machine to Processable.

Rotating parts are turned over on both ends during the process, so that they are identical from end to end. Concentricity is particularly important when machined to diameter.

If there is no concentricity, two independently machined segments of the workpiece The axial diameters of these segments will not fit within an acceptable range. The centerlines will not align within acceptable accuracy.

Other important practical features of our invention are that a single spindle nose can be It is possible to receive collets of various sizes.

In this perspective, the novel spindle nose we hereby disclose is a chuck Also receives a closer. This allows the collet/adapter assembly to has a diameter (or surface dimension) that is limited only by the capacity of the closer. It becomes possible to receive collets that

Purpose of the invention From the above description, it can be seen that the basic objective of the present invention is to remove the previously installed chuck. Ability to install a pulling collet on a lathe without removing it from the lathe and the collet is rotatably coupled to the lathe main shaft. It will be apparent to the reader that this is a new and improved collet/adapter assembly. Dew.

A related and important object of the present invention is that conventionally a drawing collet is mounted on a lathe. There is downtime associated with the change from chuck to collet that was required for A new collet that allows the collet to be mounted and coupled to the spindle of a lathe without risk of damage. and an adapter assembly.

Yet another important and fundamental object of the invention is that the collet is first or press the jaws of the workpiece without installing it inside the chuck Therefore, the collet is rotated to prevent damage to said collet when it is drawn into the corresponding part. Provides a new and improved system for mounting tension collets on board It's about doing.

Yet another important and fundamental object of the present invention is that the collet is connected to the adapter. placed in the same precise position relative to said adapter each time it is installed in the adapter. The workpiece attached to the collet by ensuring that Providing collet/adapter assemblies where the base is machined to precise tolerances. a size such that the jaws cannot be closed by the spindle nose supporting said collet; We receive collets of different types and sizes, including collets with a Jiko diameter of By providing assemblies and systems defined for the aforementioned purposes, capable of be.

Yet another important but more particular object of the invention is to provide a collet and a collet. By providing a collet/adapter assembly including a spindle nose that supports a be. The spindle nose supporting the collet is held together in a fixed longitudinal position. Fixedly attached to the chuck of the lathe to rotate to and from this relatively When the collet is removed, the jaws of said collet are pressed against each other and the machining process is performed between them. The collet adapter has a structure in which the tool or workpiece is fixed. The said collet is attached to the drawbar of the lathe, and the said collet is removed by removing the drawbar. The collet is pulled into the spindle nose and the jaws of the collet press against each other. in a relationship that grips a tool or workpiece attached to it. They are connected so that

Other important objects and features and additional advantages of the invention are set forth in the following description and accompanying appendices. It is clear to the reader from the drawings and from the discussion and detailed description of the accompanying drawings. It will be.

Brief description of the drawing FIG. 1 shows a metal rotating device equipped with a collet/adapter assembly according to the principles of the present invention. Fragment diagram of a lathe, FIG. 2 shows certain components of the lathe, collet/adapter assembly and components. Exploded diagram of the product, FIG. 3 is a longitudinal, vertical cross-section through the collet/adapter assembly; FIG. 4 is an end view of the collet/adapter assembly, FIG. 5 is similar to FIG. 3, but Embodying the principles of the invention and comprising a chuck closer, the assembly comprises: Receiving a collet with a larger jaw diameter than would otherwise be possible FIG. 2 is a diagram of a collet/adapter assembly that allows

Detailed description of the invention 1 and 2, a collet/assembly implemented in accordance with the principles of the present invention. A lathe 20 is depicted equipped with an adapter assembly 22. Said collet/adapter The assembly consists of a rod-shaped workpiece or similar and, for example, a drill bit. For tools such as cutters, the conventional chuck is changed to a collet. This is necessary when the chuck 24 does not have to be removed from the lathe 20 first. It is possible to adopt the

The chuck 24 is bolted to a face plate 26 to which the main shaft of the lathe 20 is attached. It rotates with this. The chuck includes a circularly sectioned housing 28; Within the housing 28 are a plurality (usually three) of radially movable is installed. Jaw 30 holds a workpiece or tool 31 in said jaw. (see Figure 1) in order to tighten the workpiece between the or move outward to release the tool. Radial direction of chuck jaws 30 The 8 movements are performed by the sliding portion 32. This sliding part moves inside the bore 34 of the chuck. straight through housing 28 in the direction indicated by double-headed arrow 36 in FIG. It is possible to move to

The linear transition of the sliding part 32 is caused by the hydraulically actuated drawbar 4 which is also linearly movable. This is done by 0.

A chuck with the above characteristics can be purchased from Okuma Machinery TFI, I-Gyo Co., Ltd.

The reasons for this and the details of the chuck 24 are not part of the present invention, so understanding of the present invention No further explanation is given here unless necessary.

Returning now to Figures 1, 2, and 3, supporting the tool or workpiece A collet/adapter set adopted for equipping a lathe 20 equipped with a collet for The solid body 22 includes a conventional tension collet 42 and a main shaft nose 44 that supports the collet. , and a hollow, cylindrical collet adapter 46.

, the collet 42 is of conventional construction. It consists of three identical, equiangular relations. including associated spring jaws 48, 50, and 52 (see Figure 4); inserts the selected workpiece or workpiece into the central opening 54 between its jaws. They can be mutually suppressed so as to grip and fix the tool 31. of said collet The other end 58 is truncated as shown in FIG.

As best shown in FIGS. 2 and 3, the collet 42 has a main shaft nose. 44 is slidably mounted in the center of a central bore 60 extending from end to end. It is.

Tapers 62 and 64 are connected to corresponding collets 42 so that the exterior and interior fit. is formed at the outer end of the main shaft nose 44.

2 relative to the spindle nose 44 in the direction indicated by arrow 66 in FIG. By moving the collet 42 eight times, it is pulled into the inside of the collet main shaft 44. The collet jaws 48, 50, and 52 are mutually connected by the spindle nose 44. to be pressed or squeezed. This allows the jaws of the collet to be machined into the collet. Mounted within the central collet opening 54 for securing a tool or workpiece. grip the tool or workpiece 31 that has been moved. Jaws 48...52 are open It is possible to bore the bore to increase the diameter of the mouth 54, thereby , collet 42 can accept larger diameter workpieces (or tools) become.

As best shown in FIGS. 2-4, a bore 60 is formed therein. The body 66 of the spindle nose 44 has two adjacent integral annular flanges. 70 and 72. The flange 70 is attached to the chuck housing 2 8 and in the bottom 74 of an open, complementary circular groove 76 formed on the exposed surface 78 of the The dimensions are such that it fits perfectly. This is the main shaft in the chuck 24. The collet 42 installed inside the nose and the spindle nose 44 are precisely centered. do. The body 68 of the spindle nose 44 is attached to the free or exposed end of the lathe chuck 24. It is mounted within a groove 76. The spindle noses are spaced equiangularly apart. It is fixed to the lathe chuck 24 by a threaded fastener 80 . These fa The snare passes through openings 82 in the spindle nose flanges 70 and 72 and into the lathe chuck. The threaded opening 84 is formed in the casing 28 of the ing.

As best shown in FIG. Flat portions 86, 88, and 90 are formed. These flat areas (see Figure 1) are disposed in the transverse movement path of the three radially movable jaws 30 of the chuck 24. It is placed. Therefore, the spindle nose flange 72 limits the inward movement of the jaws. Therefore, the sliding portion 32 and the tension in the direction indicated by arrow 92 in FIG. Limit the straight line of the rod 40. This is an important feature of the invention that will become clear later. .

Referring again to FIGS. 2 and 3, the inner end 58 of the collet 42 It is threaded into an internally threaded opening 93 in the adapter 46. This component is hollow, cylindrical in shape.

As best shown in FIG. has a radial shoulder 94. Collet 42 is screwed into adapter 46. so that its inner end 58 engages a shoulder 94 which holds the collet in place. Each time the collet is installed, the collet is assembled in one rotational or angular relationship. Lock relative to the adapter.

For example, the point identified by number 95 in FIG. 45 degrees above the lower end 96. Collet handle end 58 and adapter shoulder 9 This same relationship is true when collet 42 is screwed into adapter 46. is established between the lowest handle edge 96 and point 95 each time . This is the workpiece hole drilled or machined into the collet 42. The longitudinal axis of the bore 54 that receives the base and the axis of rotation of the collet are aligned with the collet. Each time the collet 42 is attached to the collet adapter 46, it is ensured that it is concentric. I testify. As a result, the workpiece installed within the bore 54 is rotates around the same axis as the More machinable.

External threads 98 are formed on collet adapter 46. The adapter is lathe A screw is installed inside the threaded opening in the sliding part 32 of the chuck 24 that can move 8 times linearly. It's included. As a result, the collet adapter is coupled to the chuck sliding part. , along the bore 34 in the chuck casing 28 in which the sliding part is housed. The sliding part moves 8 times linearly and at the same time moves 3 times.

Threads 99 do not exist in the sliding parts of conventional lathe chucks, so the collet /must be configured to cooperate with the adapter assembly 22, however. This specifically concerns the problems solved by the use of collet/adapter assemblies. It's a small job.

A pull bar 40 is also coupled to the slide 32 to effect linear movement of the slide.

The connection is made by means of an external threading 110 on the drawbar and an internal thread of the slide 32. This is performed in cooperation with the cut-off 102.

Collet/adapter assembly 22, assembled as shown in FIG. Assembly coupled to chuck 24 and arrow 92 as shown. As shown in FIG. The collet adapter moves 8 times in the same direction. The main shaft nose 44 is attached to the chuck 24. Since collet 4 is held in a fixed position in the longitudinal direction, collet 4 is 2 is pulled into the spindle nose 44.

In this way, the collet 42 is pulled into the spindle nose 44, so the collet jaw -48, 50, and 52 cooperate with the tapered outer surface 62 on the collet. mutually by sliding engagement with a tapered inner surface 64 in said spindle nose. Pressed. This keeps the workpiece or tool 31 fixed within the collet. be done.

As mentioned above, the flat or stop 86 . on the flange 72 of the spindle nose 44 . 88 and 90, the pull rod 40 moves three times in the direction of the arrow 92, and the collet 42 As it is pulled into the spindle nose 44, the chuck sliding part 32 and the limit the retraction of the pull rod 40, thereby preventing the workpiece or fixes the tool. Without this important feature, the collet 42 would have no impact on the spindle nose 44. The collet taper T46 passes through the cylindrical section 104 of the bore 60. It could be dragged to the point where 2 would move 3.

This could damage or even destroy the collet and/or the spindle nose. cormorant.

At the same time, we have mentioned above that the spindle nose 44 has a circular or rectangular structure, for example. He pointed out that.

Furthermore, as shown in FIG. The chuck closer 106 has an external thread formed on the body 6B of the spindle nose 44. It can be screwed into the notch 110. This allows the tapered jaw in the spindle nose to close. Collet type, with a jaw diameter larger than that of the chain bore section 64 A step chuck 114 can be employed on the collet/adapter assembly 22.

For example, the assembly 11B shown in FIG. It is designed to accept collets with different diameters. However, appropriate It is possible to adopt a collet with a chuck closer (106 jaws). be.

Chuck closer 106 is a hollow, cylindrical component.

When screwed into the spindle nose 44, this is relative to the spindle nose 44. flange 72 on the spindle nose 44 for a suitable jaw. A radial shoulder 117 formed by the step chuck 114 and closure In a relationship. Engagement of the inner end 107 of the chuck closer 106 with the shoulder 117 In this case, the chuck closer and spindle nose are also rotationally locked together.

The bore 118 through the free or exposed end of the chuck closer 106 is As indicated by the number 120, the step chuck 114 is tapered. Compatible with Taberjo 122. Therefore, as indicated by arrow 92 in FIG. As shown in FIG. The taper of the step chuck 114 as it is pulled into the roser. a tapered outer surface 124 and a corresponding inner taper within the chuck closer 106. The sliding engagement between the collet jaws 122 and the collet surfaces 120 forces the collet jaws 122 together. Ru. This allows the bore 126 surrounded by the jaw a-122 of the chuck to to securely hold the workpiece (or tool, as the case may be) installed inside the hold

Although it is not particularly obvious from the yg5 diagram, the surface inside the chuck closer 105 The taper of 120 is the same as the taper of the surface 64 in the spindle nose 44 and the step chuck. Tapered surface 128 at the forward end of handle 130 and tapered surface 128 in spindle nose 44 The surface 120 engages the step chuck jaws 122 before being placed on the surface 64. and is pressed together with this. This allows the chuck closer 106 to be properly Guaranteed to work properly. At the same time, this configuration allows the step chuck 106 and the providing a sliding fit between the shaft nose 44 and the forward end of said shaft nose; The step chuck is firmly held without freedom to swing.

The present invention may have other specific features without departing from its spirit or essential characteristics. It can be implemented in any form. Therefore, the examples herein are illustrative and not restrictive. The above description should not be construed as limiting, and the scope of the invention should not be construed as limiting. as indicated by the request in the application. and within the same meaning and scope as this request. All modifications are contemplated as falling within the scope of the claims.

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Claims (27)

[Claims] 1. A lathe having a rotatable chuck with movable jaws and opening and closing of said jaws There is a movable jaw actuator to effect the movement, and the collet is connected between the jaws and the collet. a collet holding device, wherein the collet holding device is fixed to the chuck and the collet holding device is fixed to the chuck. rotates with the jack and interacts with the collet to cause the collet to move into its position. The jaws of the collet are pressed against each other by moving relative to the holding device. Grasp the tool or workpiece in between and move the collet into the jaw actuator. The collet is moved relative to its holding device by moving a device connected to the holding device. a combination of devices for moving and pressing said collet jaws together as described above. 2. the rotatable chuck so that the device holding the collet rotates together; 2. The combination according to claim 1, wherein the combination is directly fixed to the rack. 3. A lathe having a rotatable chuck with movable jaws and opening and closing of said jaws There is a movable jaw actuator to effect the movement, and the collet is connected to the jaws. a collet holding device, wherein the collet holding device is fixed to the chuck and the collet holding device is fixed to the chuck. a chuck that rotates together with the chuck and is fixed to the collet holding device and rotates together with the chuck; a closure device that interacts with the collet to lock the collet into its retention device; the jaws of the collet by the chuck closing device are pressed together to grip the tool or workpiece between them, and the said collection moving a device connecting the cutter to the jaw actuator so that the jaw actuator is connected to the jaw actuator; moving the collet relative to its retaining device and opening the jaws of the collet; A combination of devices pressed together as described above. 4. (a) A rotatable chuck with a movable jaw and an opening/closing operation of the jaw. (b) rotatably moving the tool or the jaw actuator to perform the operation; A collet/arm for fixing the workpiece to the chuck and rotating with it. an adapter assembly between which the collet/adapter assembly has a tool or a collet with jaws that can be pressed against each other to grip a workpiece; a spindle nose fixed to the chuck so as to rotate together with the chuck; The spindle nose holds and interacts with the collet, and the front of the collet Relative movement with respect to the spindle nose presses the jaws together and presses the collector. A device for connecting the cut to the jaw actuator of the lathe is provided as described above. moving the collet relative to the spindle nose, thereby moving the collet jaw. A combination of devices that press the elements together. 5. (a) A rotatable chuck having a movable jaw and an opening/closing operation of the jaw. (b) rotatably moving the tool or A collet/arm for securing the workpiece to the chuck and rotating therewith. an adapter assembly between which the collet/adapter assembly has a tool or A collet with jaws that can be pressed against each other to grip a workpiece; a collet holding spindle nose fixed to the chuck so as to rotate; a chuck closer is fixed to the spindle nose so as to rotate together with the chuck closer; interacts with the collet to move the collet relative to the spindle nose; , the chuck closer operates to press the jaws together; There is a device for connecting the let to the jaw actuator of the lathe, the jaw actuator A moving device moves the collet and the spindle nose to the chuck closer as described above. - thereby pressing said collet jaws together , a combination of devices. 6. The chuck closer has an internal thread, and the spindle nose has an external thread. 6. The chuck closer is fixed to the main spindle nose. Combinations listed. 7. (a) The lathe includes a rotatable chuck having radially movable jaws. , a linearly movable sliding part for moving the jaw, and a linearly movable sliding part for moving the jaw; (b) a linearly movable pull bar for linear movement; The chuck is machined such that the cut/adapter assembly rotates with the chuck. A tool or workpiece is rotatably secured, and the collet/adapter assembly is , mutually pressable jaws to grip a tool or workpiece therein. It has a tapered external shape provided by the the spindle nose has an internal bore; The collet is slidably received therein, and one end of the bore is connected to the outer taper of the collet. taper to fit the collet into the spindle nose. By pulling in, the jaws of the collet can be pressed against each other, and the collet A let adapter is fixed to the end of the collet opposite the jaw, and an adapter actuates the adapter through a sliding portion of the chuck and onto the drawbar; including a device for linking the drawbar so that linear movement of the drawbar is coupled to the drawbar; Pull the collet into the spindle nose and align the collet jaws as described above. A combination of devices that press against each other. 8. The spindle nose has a flange extending laterally, and the flange has an opening. and a fastener extending through the opening to connect the spindle nose to the chuck. 8. The combination according to claim 7, wherein the combination is fixed to a block. 9. The collet adapter is an integrated cylindrical member, and the collet adapter is an integrated cylindrical member. The collet adapter is threaded onto the opposite end of the collet to connect the collet adapter to the lathe. The device for fixing to the drawbar is provided with an external thread on the collet adapter. 8. The lathe chuck according to claim 7, wherein the lathe chuck has a Combinations listed. 10. There is an annular groove on and acting on the outer surface of the chuck, and the main shaft There is a complementary annular flange on the nose that connects the spindle nose to the chuck. 8. The combination of claim 7, wherein the combination is centered relative to the axis of rotation of the . 11. (a) The lathe is a rotatable chuck with radially movable jaws. the sliding part is linearly movable to move the jaw, and the sliding part is linearly movable to move the jaw; (b) a pull rod movable linearly moves the slide; is a collet/adapter for rotatably securing the workpiece inside said chuck. a collet/adapter assembly, and a tool within the collet/adapter assembly. or provided by jaws that can be pressed against each other to grip the workpiece. It has a collet with a tapered external shape, and the spindle nose device rotates together. the spindle nose has an internal bore; The collet is slidably received inside and the chuck closer rotates together. The chuck closer is fixed to the spindle nose, and the chuck closer is also provided with a bore. The collet is slidably received, and one end of the chuck closer is tapered to mate with an external taper on the collet, thereby attaching the collet to the chuck clamp. By pulling it into the roser, the jaws of the collet can be pressed against each other. and a collet adapter is fixed to the end of the collet opposite said jaw, and said an adapter that connects the adapter to the drawbar through the sliding portion of the chuck; including a movably connecting device whereby linear movement of said drawbar is coupled to said pullbar; Pull the collet into the chuck closer and raise the jaws of the collet. A combination of devices that press against each other as described. 12. There is an internal thread in the chuck closer and an external thread on the spindle nose. There is a side thread to fix the chuck closer to the main shaft nose, and to fix the chuck closer to the main shaft nose. A locking device is provided on the shaft nose to lock the chuck closer against the main shaft nose. and the chuck closer is relatively arranged with respect to the spindle nose. 12. A combination according to claim 11, which prevents rotation. 13. The lathe has a rotatable chuck with movable jaws, the jaws being actuated. The device is movable and opens and closes the jaws, and a collet with jaws that can be pressed against each other to grip a piece within it and a collet retaining device interacts with said collet to hold said collet in its position. moving relative to the holding device, whereby the jaws of said collet are pressed together. grips the tool or workpiece within it as described above, and A device for coupling the collet to a device for actuating the jaw moves the jaw. By moving the holding device, the collet is moved relative to the holding device. moving to press the jaws of the collet together as described above, and the chuck restricting the inward movement of the jaws of the collet and accordingly the retaining device of the collet. limiting the relative movement of the jaws, and A combination of devices for moving said holding device. 14. A device for fixing the device for holding the collet is attached to the device for rotation together. 14. The combination of claim 13, wherein the combination is fixed directly to a lathe chuck. 15. a spindle nose fixed to the lathe chuck and rotating together; 14. A device according to claim 13, wherein a device for holding a cut is likewise fixed to the spindle nose. A combination of listed items. 16. A collet/adapter assembly grips a tool or workpiece within it. Has a tapered external shape with reciprocally pressable jaws for holding A lathe chuck or lathe with a collet so that the spindle noses rotate together. fixedly attached to the component, said spindle nose having an internal bore; the collet is slidably received, and one end of the bore meets the external taper of the collet. tapered to fit so that the jaws move the collet into the By pulling into the spindle nose, the collet adapters are pressed together and the collet adapters are pushed forward. The collet adapter is fixed to the end of the collet opposite the jaw, and the collet adapter a pig in a device operable to pull said collet into said spindle nose; A collet/adapter assembly including a device for coupling. 17. The collet adapter is an integrated cylindrical member, and the collet adapter is an integrated cylindrical member. Threaded on the end opposite the collet to connect the collet adapter to the collet. said device for securing to said collet transfer device has external threading on said collet adapter; 17. The collet/adapter assembly of claim 16, comprising: 18. The spindle nose has a flange extending laterally, and an opening is provided in the flange. through the opening to secure the spindle nose to the lathe component. A fastener can be attached to the spindle nose by the lathe component. 17. The collet/adapter of claim 16, wherein the collet/adapter is rotatably mounted. assembly. 19. the collet and the adapter, the collet being assembled to the adapter; each time the collet is placed relative to the arrangement of the collet around the longitudinal axis. comprising a device operative to place the collet on said adapter in exactly the same position; 17. The collet/adapter assembly of claim 16. 20. The actuating device connects an internal thread in the adapter and one end of the collet. with an external thread on the top and a shoulder on the inside end of the internal thread, with said collet in front. When the collet is fixed to the adapter by screwing into the adapter, when the threaded end of the collet rests against the internal threading. 20. The collet/adapter assembly of claim 19, wherein the collet/adapter assembly is designed to: 21. Capable of being pressed against each other to grip a tool or workpiece within it The collet has a tapered external shape and rotates together with the provided jaws. A spindle bolt that is fixed to a lathe chuck or lathe component so that it rotates the spindle nose has an internal bore for slidingly receiving the collet; A chuck closer is fixed to the spindle nose so as to rotate together therewithin. , the chuck closer also has an internal bore in which the collet is slidingly received. one end of the chuck closer bore is tapered to form an outer surface on the collet. mate with the chuck taper so that the jaws move the collet into the chuck cross section. The collet adapters are pressed together by pulling them into the The collet adapter is fixed to the end of the collet opposite the jaws, and the collet adapter operable to pull a piece into said chuck closer as described above; a collet/adapter set including a device for coupling said adapter to the device; Three-dimensional. 22. There is an internal thread in the chuck closer and an external thread on the spindle nose. A side thread is provided to fix the chuck closer to the spindle nose. Collet/adapter assembly according to item 21. 23. A locking device is provided on the spindle to lock the chuck closer into the spindle nozzle. the chuck claw relative to the spindle nose; 23. The collet/adapter assembly of claim 22, wherein the collet/adapter assembly prevents the user from rotating. 24. The collet adapter is an integrated cylindrical member, and the collet adapter is an integrated cylindrical member. a device screwed onto the opposite end of the collet to move the collet; A device for fixing the collet adapter to the collet adapter is provided on the collet adapter. 22. The collet/adapter assembly of claim 21, comprising external threading. 25. The spindle nose has a flange extending laterally, and an opening is provided in the flange. a section through which a fastener can be installed, which allows the said spindle node to be attached. the spindle nose is fixed to the lathe component, and the spindle nose is fixed by the component to the lathe component. 22. The collet/adapter set of claim 21, wherein the collet/adapter set is rotationally mounted. Three-dimensional. 26. Each time the collet is attached to the adapter, the collet and the adapter has a position of the collet about the longitudinal axis of the adapter. such that said collet is placed in exactly the same relationship to said adapter with respect to 22. The collet/adapter assembly of claim 21, having an actuating device. 27. The actuator has an internal thread on the adapter and one end of the collet. an external thread and a shoulder at an internal end of the internal thread, the collet being When the adapter is fixed to the adapter by being screwed into the adapter, Designed so that the threaded end of the collet rests against the internal threading of the adapter 27. The collet/adapter assembly of claim 26.