CN217889531U - Chuck repairing tool, chuck repairing system and lathe - Google Patents

Abstract

The utility model discloses a chuck repairing tool, which comprises a main body with a cylindrical hole; a plurality of accommodating grooves are uniformly formed in the wall of the cylindrical hole and correspond to the clamping jaws of the chuck respectively; the radial inward groove wall surface of each holding tank is located on the cylindrical surface coaxial with the cylindrical hole to simultaneously abut against the corresponding outer clamping surfaces on each clamping jaw. The chuck repairing tool can be fixed by utilizing the structural characteristics of the clamping jaws, so that the operation is convenient and simple. And the cylinder hole in it can be fine compares the reference to the terminal surface wearing and tearing degree in the jack catch wherein to when guaranteeing to grind the jack catch and smooth, convenient operation, and need not to adopt extra instrument to measure. To sum up, this frock is restoreed to chuck can solve the inconvenient problem of chuck repair operation effectively. The utility model also discloses a chuck repair system of repairing frock including above-mentioned chuck to and a lathe including above-mentioned chuck repair system.

Description

Chuck repairing tool, chuck repairing system and lathe

Technical Field

The utility model relates to the technical field of processing, in particular to a chuck repairing tool; the chuck repairing system comprises the chuck repairing tool; still relate to a lathe including above-mentioned chuck repair system.

Background

The jaw of the three-jaw chuck of the present common lathe has abrasion condition with the contact surface of the workpiece when the jaw of the three-jaw chuck clamps the workpiece for a long time and relaxes the workpiece, and the abrasion condition and the jaw use frequency have a close relation with the shape of the processed workpiece and the clamping length of the jaw. The outer parts of the jaws of the three-jaw chuck are frequently used, so that the outer parts of the jaws are seriously worn and deformed, and the jaws of the three-jaw chuck are in a bell mouth shape under the condition of rotation. When the clamping jaws have horn mouths, the circular runout can be out of tolerance when the workpieces are clamped again, the machining precision of the workpieces is affected, the workpieces can be clamped loosely, the workpieces easily fly out to hurt people in the machining process, and safety equipment accidents occur.

In summary, how to effectively solve the problem of inconvenient chuck repairing operation is a problem which needs to be solved urgently by those skilled in the art at present.

SUMMERY OF THE UTILITY MODEL

In view of the above, a first object of the present invention is to provide a chuck repairing tool, which can effectively solve the problem of inconvenient chuck repairing operation, and a second object of the present invention is to provide a chuck repairing system including the chuck repairing tool; the third object of the utility model is to provide a lathe including above-mentioned chuck repair system.

In order to achieve the first objective, the present invention provides the following technical solution:

a chuck repairing tool comprises a main body with a cylindrical hole; a plurality of accommodating grooves are uniformly formed in the wall of the cylindrical hole and correspond to the clamping jaws of the chuck respectively; the radial inward groove wall surface of each accommodating groove is located on the cylindrical surface coaxial with the cylindrical hole, so that the accommodating grooves can be abutted to the corresponding outer clamping surfaces on the clamping jaws simultaneously.

In the chuck repairing tool, the chuck repairing tool is used, the structure characteristics of the clamping jaws can be utilized to fix the tool, and the operation is convenient and simple. And the cylinder hole in it can be fine compare the reference to the terminal surface wearing and tearing degree in the jack catch wherein to when guaranteeing to carry out the coping to the jack catch and leveling, convenient operation, and need not to adopt extra instrument to measure. To sum up, this frock is restoreed to chuck can solve the inconvenient problem of chuck restoration operation effectively.

Preferably, the receiving groove is formed at the cylindrical hole, and the groove width in the circumferential direction is gradually reduced inwards in the radial direction.

Preferably, the main body includes a disc portion provided with the receiving grooves and a boss portion provided between adjacent receiving grooves; the rear side surface of the disc part forms a supporting surface which is arranged on the radial outer side of the accommodating groove and is used for abutting against the claw in the front-back direction; the boss portion protrudes backwards from the supporting surface.

Preferably, the side surfaces of two sides of the boss part and the groove walls of the accommodating groove adjacent to the corresponding two sides are located on the same plane.

Preferably, the cylindrical surface on which the radial inner side surface of the boss part is located and the wall of the cylindrical hole are coaxially arranged, and the diameters of the cylindrical surface and the wall of the cylindrical hole are equal.

Preferably, the disc part is a disc part, and the diameter of a cylindrical surface on which the radial outer side face of the boss part is located is smaller than that of the disc part.

Preferably, the inward groove wall surface is a plane, and a midpoint of the inward groove wall surface in the circumferential direction and the radially outer side surface of the boss portion are located on the same cylindrical surface.

In order to reach above-mentioned second purpose, the utility model also provides a chuck repair system, this chuck repair system include any kind of chuck repair frock of the aforesaid, the radial inside of jack catch of chuck is located in the holding tank of chuck repair frock, the outer holding surface of jack catch with the groove wall offsets inwards of holding tank, the cylinder hole of chuck repair frock with the coaxial setting of jack catch, and make the inner radial inwards protrusion that carries on of jack catch cylinder hole pore wall sets up. Because foretell chuck is restoreed frock and is had above-mentioned technological effect, the chuck repair system who has this chuck and restores frock also should have corresponding technological effect.

In order to reach the above-mentioned third purpose, the utility model also provides a lathe, this lathe include any kind of chuck repair system of the aforesaid, including the bore hole lathe tool, the bore hole lathe tool can the axial stretch into to the downthehole in order to cut the jack catch bulge of cylinder of chuck repair system. Since the above-mentioned chuck repairing system has the above-mentioned technical effects, a lathe having the chuck repairing system should also have corresponding technical effects.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic rear side structural view of a chuck repairing tool provided in an embodiment of the present invention;

fig. 2 is a schematic view of a radial cross-sectional structure of a chuck repairing tool according to an embodiment of the present invention;

fig. 3 is a schematic diagram of a forward structure of a three-jaw chuck repairing system according to an embodiment of the present invention;

fig. 4 is a schematic radial cross-sectional structure diagram of another chuck repairing tool provided in an embodiment of the present invention;

fig. 5 is a schematic diagram of a front structure of a four-jaw chuck repairing system according to an embodiment of the present invention;

fig. 6 is an operation schematic diagram of chuck repairing according to an embodiment of the present invention.

The drawings are numbered as follows:

the clamping fixture comprises a main body 1, an accommodating groove 2, a cylindrical hole 3, a clamping jaw 4, an inward groove wall surface 5, a V-shaped contraction opening 6, an outer clamping surface 7, a boring lathe tool 8, a chuck body 9, a bell mouth 10, a disc part 11 and a boss part 12.

Detailed Description

The embodiment of the utility model discloses frock is restoreed to chuck, this frock is restoreed to chuck can solve the inconvenient problem of chuck repairing operation effectively.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 6, fig. 1 is a schematic diagram of a rear side structure of a chuck repairing tool according to an embodiment of the present invention; fig. 2 is a schematic radial sectional structure diagram of a chuck repairing tool provided by an embodiment of the present invention; fig. 3 is a schematic diagram of a forward structure of a three-jaw chuck repairing system according to an embodiment of the present invention; fig. 4 is a schematic radial cross-sectional structure diagram of another chuck repairing tool provided in an embodiment of the present invention; fig. 5 is a schematic diagram of a front structure of a four-jaw chuck repairing system according to an embodiment of the present invention; fig. 6 is an operation schematic diagram of chuck repair according to an embodiment of the present invention.

The chuck mentioned in the embodiments of the present invention generally includes a chuck body 9 and a plurality of jaws 4, and it is also contemplated to provide a radial driving device, wherein three jaws 4 may be provided, or four jaws 4 may be provided, or of course two jaws 4 may be provided, and in the case of a currently common three-jaw chuck, three jaws 4 having an angle of 120 degrees are provided.

Wherein the jaws 4 are slidably connected with the chuck body 9 in a radial direction to achieve clamping and unclamping during radial movement. On the leading flank of the chuck body 9, the jaws 4 are arranged to protrude from the leading flank of the chuck body 9, the leading flank of the chuck body 9 is an axial end face, on a lathe, the leading flank of the chuck body 9 faces the tailstock of the machine tool, and in practical application, the jaws are moved to the leading flank of the chuck body 9 by the clamping member so as to enter positions among the jaws 4.

The radial inner sides of the clamping jaws 4 form clamping surfaces facing radially inwards, the inner side surfaces of the clamping jaws 4 are positioned on the same circumferential surface to be capable of centering and clamping the cylindrical piece, and the circumferential surface is a clamping circumferential surface. The jaws 4 are now used for outer clamping. Namely, the clamped piece extends into the space between the claws 4, and the claws 4 move inwards in the radial direction to reduce the clamping opening, so that the rod piece is clamped from the outer side of the rod piece.

On the front side of the jaws 4, a step surface is also formed, which faces radially outwards and serves as an inner support surface, also called outer clamping surface 7. The corresponding outer clamping surfaces 7 on the clamping jaws 4 are positioned on the same circumferential surface to be capable of centering and tightly supporting the cylindrical hole 3 or the cylindrical groove, and the circumferential surface is an outer supporting circumferential surface. When the clamping jaw is used, the clamping jaw 4 partially extends into the inner groove or the inner hole of the clamped piece on the outer clamping surface 7, and then the clamping jaw 4 moves outwards in the radial direction until the outer clamping surface 7 is abutted against the inner groove wall or the inner hole wall of the clamped piece. It should be noted that each jaw 4 may be provided with one or more outer clamping surfaces 7, and a plurality of outer clamping surfaces 7 may be provided so as to be located on outer support circumferential surfaces with different diameters.

The radial driving device can respectively drive each clamping jaw 4 to move radially, and can also simultaneously drive each clamping jaw 4 to move radially. The driving form is screw nut driving mechanism, gear rack driving mechanism. The specific driving form is not described herein.

In practice, the front part of the inner end surface of the jaw 4 wears more than the rear part, so that it presents a flare 10 as shown in the figures. It is therefore necessary to gradually cut back the excess for repair.

In some embodiments, one or more chuck repair tools are provided, such as may be applied to the chuck in some embodiments. Specifically, the chuck repairing tool comprises a main body 1 with a cylindrical hole 3. Wherein the main body 1 can be a single piece or an assembly. The hole wall of the cylindrical hole 3 is mainly used for reference at the inner end face of the clamping jaw 4 so as to judge the inclination degree of the inner end face of the clamping jaw 4 and a part needing to be cut off. Wherein cylinder hole 3, can be the through-hole, also can be the blind hole, in the application, the one end need open the setting forward, or at least have a passageway in order to make things convenient for the lathe tool to get into wherein.

Wherein evenly be provided with a plurality of holding tanks 2 on the 3 pore walls in cylinder hole to respectively correspond to each jack catch 4 of chuck. So that the radially inner part of the jaw 4 can enter the receiving groove 2, so that the inner end surface of the jaw 4 can be at least partially exposed from the receiving groove 2 to enter the cylindrical hole 3, so that the turning tool can cut the inner end part of the jaw 4 in the cylindrical hole 3. And the radial inside part of jack catch 4 can get into holding tank 2 to there is the coincidence in the axial for 3 pore walls in jack catch 4 and cylinder hole, in order to make things convenient for 3 pore walls of cylinder hole better as the reference, in order to guarantee to cut 4 unnecessary parts of jack catch better.

Wherein the radially inwardly facing groove wall 5 of each of said receiving grooves 2 is located on a cylindrical surface coaxial with the cylindrical bore 3 so as to be able to abut against a corresponding outer clamping surface 7 on each jaw 4 simultaneously. When using promptly, each jack catch 4 radially inwards slides, repair the frock up to can adorn above-mentioned chuck, when the frock is restoreed to the dress chuck, wherein the radial inside of each jack catch 4 is arranged in holding tank 2, then make each jack catch 4 radially outwards movable, outer clamping face 7 on the jack catch 4 radially outwards removes, outer clamping face 7 on up to each jack catch 4 equally divide do not offset with the inboard groove wall 5 on the holding tank 2 that corresponds, after outwards propping tightly, can realize jack catch 4 and the chuck and restore fixing between the frock, and then guarantee the turning in-process, the chuck that is as the reference is restoreed the frock and can not take place the displacement relatively jack catch 4. Moreover, in some embodiments, the groove walls of the accommodating groove 2 on both sides in the circumferential direction can also transmit torque with the pawl 4 in the axial direction.

In above-mentioned chuck restoration frock, use above-mentioned chuck restoration frock, can utilize the structural feature of jack catch 4 self to fix above-mentioned frock, and then make convenient operation simple. And cylindrical hole 3 in it can be fine compares the reference to the terminal surface degree of wear of jack catch 4 wherein to guarantee to grind usual time jack catch 4, convenient operation, and need not to adopt extra instrument to measure. To sum up, this frock is restoreed to chuck can solve the inconvenient problem of chuck repair operation effectively.

In some embodiments, it is also possible to have the receiving groove 2 at said cylindrical hole 3, the circumferential groove width decreasing in the radially inward direction to form a V-shaped constriction 6, the central mouth of which of course should ensure that the inner end surfaces of the jaws can protrude to be located in the cylindrical hole 3. Like this, when using, the radial inside of jack catch 4 is back in entering into holding tank 2, and jack catch 4 can radial inward movement, and the inclined plane of the terminal surface both sides in the jack catch 4 offsets with the inclined plane of both sides in the V type shrink mouth 6 of holding tank 2 to exert radial inward thrust to whole main part 1, in order to realize pressing from both sides tight effect.

In some embodiments, the chuck repairing tool may be provided with only one of the inward groove wall surface 5 and the V-shaped contraction opening 6, so as to be adapted to a corresponding chuck: when the clamping jaw 4 of the chuck is provided with the outer clamping surface 7, a chuck repairing tool with an inward groove wall surface 5 can be selected; when the two sides of the inner end surfaces of the clamping jaws 4 of the chuck form inclined surfaces, the chuck repairing tool with the V-shaped shrinkage port 6 can be selected. And both of the above chucks can be used, the latter can be preferably used. Of course, in some embodiments, the chuck repairing tool may be provided with the inward groove wall surface 5 and the V-shaped contraction opening 6 at the same time, or the inward groove wall surface 5 or the V-shaped contraction opening 6 may be selected to operate according to different chucks and/or different operating states.

In some embodiments, it is considered that the axial height of the support surface is generally limited, which results in a limited axial height towards the inner slot wall surface 5, and in addition, the outer clamping surface 7 of the jaw 4 is generally located relatively towards the front. In order to better ensure the strength of the entire body 1, it is preferable here that the body 1 comprises a disc portion 11 provided with said receiving grooves 2 and a boss portion provided between adjacent said receiving grooves 2. The disc portion 11 and the boss portion may be formed by welding or may be formed integrally.

The back side of the disc part 11 forms a support surface which is at the radial outer side of the holding groove 2 and is used for being abutted against the front and back directions of the claw 4, wherein the front and back directions are the axial directions of the cylindrical hole 3, and the support surface faces to the back side. And wherein the boss portion 12 is arranged projecting rearwardly from said support surface. So that the disc portion 11 is mounted on the chuck, the boss portion 12 can be extended backward to improve the overall strength.

In some embodiments, the side surfaces of the two sides of the boss part and the groove walls of said receiving groove 2 adjacent to the two corresponding sides may be in the same plane, so that the cavity between adjacent boss parts may also form part of the receiving groove 2, so that in some embodiments the side walls of adjacent boss parts may be able to abut against the two sides of the jaw 4, respectively, for torque transmission.

In some embodiments, the cylindrical surface on which the radially inner side surface of the boss portion is located and the hole wall of the cylindrical hole 3 may be coaxially arranged and have the same diameter, so that the same cylindrical surface may be used, so that the radially inner side surface of the boss portion can also have a reference comparison effect on the jaws 4. And then better, in the axial direction for the part that the jack catch 4 inner end face is with many has more reference surface, in order to guarantee later stage arrangement accuracy.

In some embodiments, disk 11 is a disk portion, and the diameter of the cylindrical surface on which the radially outer side of the boss portion is located may be smaller than the diameter of disk 11, but may be equal to or larger than the diameter of disk 11.

And preferably, the inward groove wall surface 5 is a plane, and the midpoint of the inward groove wall surface 5 in the circumferential direction and the radial outer side surface of the boss part are positioned on the same cylindrical surface, so that the boss part can better ensure that the part of the clamping jaw 4 positioned radially inwards of the supporting surface is limited.

In some embodiments, if the three-jaw chuck is applied, three holding grooves 2 are formed on the main body 1, and the three holding grooves 2 are formed at an angle of 120 degrees, and if the three-jaw chuck is applied, four holding grooves 2 are formed on the main body 1, and the three holding grooves are formed at an angle of 90 degrees,

based on the frock is restoreed to the chuck that provides in the above-mentioned embodiment, the utility model also provides a frock is restoreed to this chuck, and this chuck repair system includes that arbitrary chuck in the above-mentioned embodiment restores the frock, including the chuck, 4 radial insides of jack catch of chuck are located in the holding tank 2 of frock is restoreed to the chuck, jack catch 4 outer clamping face 7 with holding tank 2 inwards the wall 5 offsets, the cylinder hole 3 that the frock was restoreed to the chuck with jack catch 4 coaxial setting, the axis of cylinder hole 2 is the center between a plurality of jack catch 4 promptly, and makes the inner radial inward protrusion that carries on of jack catch 4 3 pore walls settings in cylinder hole. Because the chuck repairing system adopts the chuck repairing tool in the above embodiment, the beneficial effects of the chuck repairing system refer to the above embodiment.

Based on the chuck repair system that provides in the above-mentioned embodiment, the utility model also provides a lathe, this lathe include arbitrary chuck repair system in the above-mentioned embodiment, including bore hole lathe tool 8, bore hole lathe tool 8 can the axial stretch into to in order to cut 4 bulges of jack catch in the cylinder hole 3 of chuck repair system. Because the lathe adopts the chuck repairing system in the above embodiment, please refer to the above embodiment for the beneficial effects of the lathe.

When the tool is used, the chuck repairing tool and the three-jaw chuck are combined together firstly, then the wrench of the three-jaw chuck is used for screwing clockwise, at the moment, the jaw 4 of the three-jaw chuck moves outwards until the outer clamping surface 7 of the jaw 4 and the repairing tool, the chuck repairing tool and the three-jaw chuck are tightly attached together through clamping force, and gaps are eliminated.

When the three-jaw chuck repairing tool and the three-jaw chuck are attached together, the lathe rotates forwards, the rotating speed is low and should be 50-150r/min (revolutions per minute), the feeding amount is 0.1mm/r (millimeters per revolution), and the feeding depth is 0.5mm (millimeters).

In the selection of the cutter, the turning tool is made of YT15 (tungsten-cobalt-titanium hard alloy, wherein Y represents hard alloy, T represents titanium carbide and the content of the titanium carbide is 15%), the turning tool cannot be too sharp, and the front angle is 10 degrees, the main back angle is 3 degrees, the auxiliary back angle is 5 degrees, the main drift angle is 45-90 degrees, the auxiliary drift angle is 3 degrees, and the cutting edge is ground to have 0.1-0.2mm wide chamfered edges.

During turning, cutting fluid is poured fully, and after turning, whether each surface of the clamping jaw 4 is turned is checked, and if not, turning is carried out again until each surface is turned.

After turning is completed, the three-jaw chuck tool is loosened anticlockwise through a wrench of the three-jaw chuck, and the whole repairing process of the three-jaw chuck is finished.

The implementation effect is as follows:

the repaired three-jaw chuck can achieve the clamping effect of a new three-jaw chuck, and the circle run-out of a clamped workpiece can reach 0.05mm.

The rejection rate of the three-jaw chuck is reduced, the jaw 4 of the original three-jaw chuck is worn and can only be replaced with new one, and after the existing three-jaw chuck repairing tool is used, the jaw 4 can be repaired and then used continuously.

The labor efficiency is improved, and parts which are frequently processed by the upper and lower three-jaw chucks can be processed without alignment.

The personal safety of operators is guaranteed, the repaired three-jaw chuck is clamped more tightly, and workpieces cannot fly out to cause accidents.

The three-jaw chuck repairing tool realizes the repairing of the three-jaw linkage chuck, and provides technical reference and direction for the repairing of the jaws 4 of the three-jaw linkage chuck and the four-jaw linkage chuck with various sizes.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (9)

1. The chuck repairing tool is characterized by comprising a main body with a cylindrical hole; a plurality of accommodating grooves are uniformly formed in the wall of the cylindrical hole and correspond to the clamping jaws of the chuck respectively; the radial inward groove wall surface of each accommodating groove is located on the cylindrical surface coaxial with the cylindrical hole, so that the radial inward groove wall surface of each accommodating groove can be abutted to the corresponding outer clamping surface of each clamping jaw at the same time.

2. The chuck repairing tool according to claim 1, wherein the receiving groove is formed at the cylindrical hole, and the width of the groove in the circumferential direction is gradually reduced inward in the radial direction.

3. The chuck repairing tool according to claim 2, wherein the main body comprises a disc portion provided with the receiving grooves and a boss portion provided between adjacent receiving grooves; the rear side surface of the disc part forms a supporting surface which is arranged on the radial outer side of the accommodating groove and is used for abutting against the claw in the front-back direction; the boss part protrudes backwards from the supporting surface.

4. The chuck repairing tool according to claim 3, wherein the side surfaces of two sides of the boss portion and the groove wall of the accommodating groove adjacent to the corresponding two sides are located on the same plane.

5. The chuck repairing tool according to claim 4, wherein the cylindrical surface on which the radial inner side surface of the boss portion is located and the wall of the cylindrical hole are coaxially arranged, and have the same diameter.

6. The chuck repairing tool according to claim 5, wherein the disk portion is a disk portion, and a diameter of a cylindrical surface on which a radial outer side face of the boss portion is located is smaller than that of the disk portion.

7. The chuck repairing tool according to claim 6, wherein the inward groove wall surface is a plane, and a midpoint of the inward groove wall surface in the circumferential direction and a radially outer side surface of the boss portion are located on the same cylindrical surface.

8. A chuck repairing system comprises a chuck and is characterized by further comprising the chuck repairing tool according to any one of claims 1 to 7, wherein clamping jaws of the chuck are located in accommodating grooves of the chuck repairing tool in the radial direction, outer clamping surfaces of the clamping jaws abut against inward groove wall surfaces of the accommodating grooves, cylindrical holes of the chuck repairing tool and the clamping jaws are arranged coaxially, and the inner ends of the clamping jaws are enabled to protrude out of the walls of the cylindrical holes in the radial direction.

9. A lathe comprising a boring tool, further comprising the chuck repair system of claim 8, wherein the boring tool is axially extendable into a cylindrical bore of the chuck repair system to cut the jaw projections.

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