CN218874479U - Turning tool - Google Patents

Abstract

The application provides a turning frock for the fixed machined part of treating, the turning frock includes clamping body and fastener, treat that the machined part cover is established on the clamping body, fastener is including expanding the piece, it sets up along circumference to expand the piece clamping body outer wall with treat between the machined part inner wall, be used for doing treat that the machined part provides the holding power of radial direction. Can realize that the turning frock is full of through setting up the piece that expands and treat the machined part hole to make and treat that machined part excircle turning in-process atress is even, can avoid the turning in-process to treat that the machined part excircle deckle edge appears, tear and phenomenons such as warp, can realize treating that the excircle thin wall circularity after the machined part turning is high, improved excircle roughness, thereby effectively improve the machining precision, also improved the yields and the work efficiency of work piece simultaneously.

Description

Turning tool

Technical Field

This application belongs to the machine-building technical field, concretely relates to turning frock.

Background

In the machining process, it is difficult to manufacture high-precision thin-wall parts. The clamping mode of the turning part is to use a three-jaw chuck to clamp the excircle of the part, and because the three-jaw chuck can only clamp three positions, the ratio of the stress area of the part to the total external surface area of the excircle is small, the three-jaw chuck shrinks inwards during processing, and after processing, the three-jaw chuck relaxes, and the excircle of the part is easily changed into a polygon.

To solve the above problem, the prior art CN214867343U discloses a clamp for end press, comprising: the anchor clamps body, the front end of anchor clamps body is provided with the locating hole, locating hole the place ahead is provided with the clamp plate, be provided with the tool feed hole on the clamp plate, sliding fit is provided with the horizontally pull rod on the anchor clamps body, the pull rod sets up and is located the locating hole rear with the locating hole is coaxial, be provided with the connection pad on the pull rod, the blind rivet has been linked firmly on the connection pad, the blind rivet level is worn out the strip hole that corresponds the setting on anchor clamps body and the clamp plate forward, the strip hole sets up along the circumference in tool feed hole, the coaxial spacing head that the diameter is greater than the blind rivet diameter that sets up in the front end of blind rivet, strip hole one end diameter is greater than the diameter of spacing head, strip hole other end diameter is less than the diameter of spacing head, blind rivet quantity is a plurality ofly along locating hole circumference interval distribution.

Although the clamping mode of the workpiece is changed from clamping excircle to clamping end face by the clamp, clamping deformation and scratching of the outer peripheral face of the workpiece are avoided, the clamp only clamps the front end face and the rear end face of the workpiece without limiting the circumferential end face of the workpiece, a gap exists between the inner hole of the workpiece and the clamp, the turning stress is large, and the outer wall of the turned thin-wall workpiece often generates burrs, tearing, deformation and the like, so that a plurality of uncertain factors are brought to subsequent processing, and the defective rate of the workpiece is greatly improved.

SUMMERY OF THE UTILITY MODEL

Consequently, the technical problem that this application will be solved lies in providing a turning frock, can be full of and treat the machined part hole, avoids treating that the machined part excircle is out of shape at the turning in-process, improves the yields of work piece.

In order to solve the problem, this application provides a turning frock for the fixed machined part of treating, the turning frock includes clamping body and fastener, it establishes to treat the machined part cover on the clamping body, fastener is including expanding the piece, it is in along circumference setting to expand the piece clamping body outer wall with treat between the machined part inner wall, be used for doing treat that the machined part provides the holding power of radial direction.

Optionally, the clamping body penetrates through the to-be-processed workpiece along a first direction, the clamping body includes a stopping portion, the to-be-processed workpiece abuts against the stopping portion, and the stopping portion is located on a reverse side of the to-be-processed workpiece in the first direction so as to limit the to-be-processed workpiece in the reverse direction of the first direction.

Optionally, the fastening device further comprises a positioning element, the positioning element is sleeved on the clamping body, the positioning element is arranged on the first direction side of the expansion piece, the outer wall of the positioning element is in contact with the inner wall of the expansion piece, the positioning element is coaxially arranged with the clamping body, and the positioning element is limited in radial direction to the expansion piece.

Optionally, the fastening device further comprises a locking member, the locking member is disposed on the first direction side of the positioning member, and the locking member is used for applying force to the positioning member along the opposite direction of the first direction, so that the positioning member moves into the expansion member.

Optionally, set up the groove of stepping down on the piece that expands, the groove of stepping down is followed the radial and axial of clamping body run through the piece that expands, the setting element passes through the retaining member along the opposite direction of first direction to in the tight piece that expands, the piece that expands is in under the effect of setting element holding power, the gap in groove of stepping down increases.

Optionally, the inner wall of the expansion piece is conical, the outer wall of the positioning piece is conical, and the locking piece applies force in the radial direction to the expansion piece through the positioning piece, so that the outer wall of the expansion piece is attached to the inner wall of the workpiece to be machined.

Optionally, the expansion piece is cylindrical, the positioning piece is cylindrical, the inner wall of the expansion piece is in contact with the outer wall of the positioning piece, and the positioning piece is arranged between the workpiece to be machined and the clamping body.

Optionally, the length of the expanding piece is greater than that of the workpiece to be machined, so that one end of the expanding piece, which is far away from the stopping portion, extends out of the workpiece to be machined.

Optionally, the clamping body further includes a connecting portion, the length of the connecting portion is greater than the sum of the lengths of the workpiece to be processed and the positioning member, and the positioning member is located on the connecting portion and moves in a direction toward or away from the workpiece to be processed.

Optionally, the clamping body further includes an embracing clamping portion, the first direction side of the embracing clamping portion is fixedly connected to the stopping portion, and the reverse side of the first direction side of the embracing clamping portion is fixedly connected to the driving device, so that the driving device drives the workpiece to be machined to rotate through the embracing clamping portion.

Advantageous effects

The embodiment of the utility model provides a turning frock for the fixed machined part of treating can realize through setting up the piece that expands that the turning frock is full of and treat the machined part hole, so that treat that machined part excircle turning in-process atress is even, can avoid the turning in-process to treat that the machined part excircle deckle edge appears, tear and phenomenons such as warp, can realize treating that the excircle thin wall circularity after the machined part turning is high, has improved excircle roughness, thereby effectively improve the machining precision, also improved the yields and the work efficiency of work piece simultaneously. Simultaneously can provide the holding power for the tight piece that expands through setting up the setting element to make the tight piece that expands can take place deformation and treat that the machined part is laminated completely, the setting element can carry on spacingly in radial direction for expanding the tight piece with the coaxial setting of clamping body simultaneously, also treat the machined part and lock in the position of radial direction, avoid the turning in-process, treat that the machined part takes place to rock in radial direction, and then improved the yields of treating machined part machining precision and work piece, also avoid treating the machined part simultaneously and rock in radial direction and bump the lathe tool.

Drawings

FIG. 1 is a schematic structural diagram of a turning tool in an embodiment of the application;

FIG. 2 is a schematic structural view of a clamping body according to an embodiment of the present disclosure;

FIG. 3 is a schematic structural diagram of a workpiece to be processed according to an embodiment of the present application;

FIG. 4 is a schematic view of an embodiment of an expander of the present application;

fig. 5 is a schematic structural diagram of a positioning element according to an embodiment of the present application.

The reference numerals are represented as:

1. a workpiece to be processed; 2. clamping the body; 21. a stopper portion; 22. a connecting portion; 23. a clamping part; 3. a fastening device; 31. expanding the fastening piece; 311. a yielding groove; 32. a positioning member; 33. and a locking member.

Detailed Description

In the description of the present application, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are used only for convenience of description and for simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

With reference to fig. 1 to 5, according to an embodiment of the present application, a turning tool is provided for fixing a workpiece 1 to be machined, the turning tool includes a clamping body 2 and a fastening device 3, the workpiece 1 to be machined is sleeved on the clamping body 2, the fastening device 3 includes an expanding member 31, and the expanding member 31 is circumferentially disposed between an outer wall of the clamping body 2 and an inner wall of the workpiece 1 to be machined, and is configured to provide a supporting force in a radial direction for the workpiece 1 to be machined. Can realize through setting up bloated piece 31 that the turning frock is full of and treat 1 hole of machined part to make and treat that 1 excircle turning in-process atress of machined part is even, can avoid the turning in-process to treat that 1 excircle of machined part appears deckle edge, tear and phenomenons such as warp, treat simultaneously that the excircle thin wall circularity after 1 turning of machined part is high, improved excircle roughness, thereby effectively improve the machining precision, improved the yields and the work efficiency of work piece by a wide margin, frock simple structure simultaneously, easy and simple to handle, production efficiency is high.

Wherein, clamping body 2 includes first section and second section, first section with treat 1 fixed connection of machined part, second section and lathe pivot fixed connection, its connected mode can be for dismantling the connection, the lathe pivot is through 2 drives of clamping body and treat that machined part 1 rotates.

Wherein, clamping body 2 can be the stairstepping, and clamping body 2 can be integrated into one piece, also can constitute by first section and second section fixed connection, and its connected mode can be bolted connection or welding etc. this application does not do further injectedly, and the diameter of clamping body 2 first section is less than the diameter of clamping body 2 second section.

Specifically, treat that machined part 1 bottom is close to clamping body 2 and seted up the through-hole, the diameter of through-hole is greater than the diameter of the first section of clamping body 2, avoids treating the bottom of machined part 1 to take place to stick up the limit, and the diameter of through-hole is less than the diameter of the second section of clamping body 2 simultaneously, and the first section of clamping body 2 runs through-hole and treats machined part 1.

Wherein, fastener 3 includes the piece 31 that expands, and as an embodiment, the piece 31 that expands can set up a plurality ofly, and the piece 31 that expands evenly arranges along the circumference of clamping body 2, and as another embodiment, the piece 31 that expands can set up one, and the piece 31 cover that expands is established on the first section of clamping body 2, and in this application embodiment, the piece 31 that expands sets up one.

Wherein, treat that machined part 1 has seted up the hole, the hole does not run through treats machined part 1, and tight 31 of expanding is placed in the hole, and tight 31 of expanding can provide the holding power for treating 1 outer walls of machined part, can avoid treating 1 excircle turning in-process utility model of machined part to warp to improve the machining precision, improved the yields and the work efficiency of work piece simultaneously.

Specifically, the inner wall of the tight piece 31 that expands is laminated with the outer wall of clamping body 2 mutually, and there is certain clearance between the outer wall of the tight piece 31 that expands and the 1 inner wall of treating the machined part, in this application embodiment, the clearance is less than 0.1mm to make the tight piece 31 that expands expand its outer wall and treat that 1 inner wall of machined part can laminate completely, avoid the clearance too big, the tight volume that expands is not enough, can't treat that 1 excircle of machined part provides sufficient holding power.

In this application, can realize through setting up the piece 31 that expands that the turning frock is full of and treat 1 hole of machined part to make and treat 1 excircle turning in-process atress of machined part even, can avoid the turning in-process to treat that phenomenon such as 1 excircle of machined part appears deckle edge, tears and warp, treat simultaneously that excircle thin wall circularity after 1 turning of machined part is high, improved excircle roughness, thereby effectively improve the machining precision, and then improved the yields and the work efficiency of work piece.

The clamping body 2 penetrates through the workpiece 1 to be machined in the first direction, the clamping body 2 comprises a stopping portion 21, the workpiece 1 to be machined is abutted against the stopping portion 21, and the stopping portion 21 is located on the reverse side of the first direction of the workpiece 1 to be machined so as to limit the workpiece 1 to be machined in the reverse direction of the first direction.

Wherein, the first direction is the direction that the lathe pivot was kept away from to the axial of clamping body 2, and the first section of clamping body 2 is through treating 1 bottom through-hole of machined part and is run through 1 of treated machined part along first direction.

Wherein, backstop portion 21 can be cylindrical, and backstop portion 21 sets up on clamping body 2, and the first direction side of backstop portion 21 is connected with clamping body 2 first section, and the reverse side of the first direction of backstop portion 21 is connected with clamping body 2 second section, and its connected mode is bolted connection or riveting, and this application does not do further the restriction.

Specifically, the to-be-machined part 1 is sleeved on the first section of the clamping body 2 along the reverse side of the first direction, and moves on the first section of the clamping body 2 until the to-be-machined part abuts against the stopping part 21, and the diameter of the stopping part 21 is smaller than the outer diameter of the to-be-machined part 1, so that the to-be-machined part 1 can be fully cut.

In this application, can treat through setting up backstop portion 21 that machined part 1 forms spacingly in the reversal of the first direction of clamping body 2, avoid treating 1 turning in-process of machined part and take place to rock at the axial of clamping body 2, cause the turning position to change to treat 1 machining precision of machined part has been improved, and then improved the yields of work piece.

The fastening device 3 further comprises a positioning part 32, the positioning part 32 is sleeved on the clamping body 2, the positioning part 32 is arranged on the first direction side of the expansion piece 31, the outer wall of the positioning part 32 is in contact with the inner wall of the expansion piece 31, the positioning part 32 is coaxially arranged with the clamping body 2, and the positioning part 32 is limited to the expansion piece 31 in the radial direction.

Wherein, setting element 32 is the annular, setting element 32 and clamping body 2 sliding connection, and the inner wall of setting element 32 laminates with the outer wall of clamping body 2 mutually, and setting element 32 can remove on the axial direction of clamping body 2.

Specifically, in this application, the setting element 32 moves towards the direction of the tight piece 31 that expands on clamping body 2, move to the tight piece 31 that expands until the setting element 32, at this moment, the outer wall of setting element 32 and the inner wall of the tight piece 31 that expands laminate mutually, the setting element 32 provides the holding power of a radial direction for the tight piece 31 that expands, the tight piece 31 that expands takes place deformation under the effect of setting element 32, so that the outer wall of the tight piece 31 that expands can laminate completely with the inner wall of treating machined part 1, and then for treating that machined part 1 outer wall provides the holding power of radial direction, avoid treating that machined part 1 turning in-process excircle takes place to warp.

Wherein, the central line of setting element 32 and the coincidence of the central line of clamping body 2, the position that setting element 32 removed the in-process radial direction can not change to make bloated tight 31 with treat that the position of machined part 1 excircle in radial direction can not change yet, can realize will treating the position of machined part 1 to lock through setting element 32 on radial direction, avoid the turning in-process, treat that machined part 1 takes place to rock in radial direction, and then improved the yields of treating machined part 1 machining precision and work piece.

Wherein, the length of setting element 32 can be more than or equal to the length of bloated piece 31 to the holding power that makes setting element 32 provide avoids the local atress of retaining member 33 to take place deformation at retaining member 33 surface evenly distributed, has improved the laminating degree of retaining member 33 outer wall with treating machined part 1 inner wall.

In this application, can provide the holding power for bloated tight 31 through setting up setting element 32, so that bloated tight 31 can take place deformation and treat that machined part 1 laminates completely, setting element 32 can carry on spacingly in radial direction for bloated tight 31 with 2 coaxial settings of clamping body simultaneously, treat machined part 1 and lock in the position of radial direction promptly, avoid the turning in-process, treat that machined part 1 takes place to rock in radial direction, and then improved the yields of treating 1 machining precision of machined part and work piece, also avoid treating machined part 1 and rock in radial direction and bump the lathe tool simultaneously.

The fastening device 3 further includes a locking member 33, the locking member 33 being disposed on a first direction side of the positioning member 32, the locking member 33 being configured to apply a force to the positioning member 32 in a direction opposite to the first direction to move the positioning member 32 into the expansion member 31.

The locking member 33 may be a locking nut, and the first direction side of the clamping body 2 is provided with a thread, and the locking nut is sleeved on the thread.

Wherein, retaining member 33 sets up the first direction side at setting element 32, and the diameter of retaining member 33 is greater than the diameter of setting element 32, and retaining member 33 can move on clamping body 2 and drive setting element 32 and remove towards bloated piece 31, and retaining member 33 can carry out spacingly at first direction to setting element 32 simultaneously.

Specifically, clamping body 2 sets gradually in the first direction and remains machined part 1, tight piece 31 expands, setting element 32 and retaining member 33, tight piece 31 that expands sets up in waiting to machined part 1, retaining member 33 moves on clamping body 2 towards the tight piece 31 that expands and drives the setting element 32 and remove to expand in tight piece 31, can provide holding power for tight piece 31 expands through setting element 32, so that tight piece 31 that expands can take place to deform and wait that machined part 1 laminates completely, setting element 32 and the coaxial setting of clamping body 2 can be spacing in radial direction for tight piece 31 that expands, also treat that machined part 1 locks in radial direction's position, avoid the turning in-process, treat that machined part 1 takes place to rock in radial direction.

In this application, can carry on spacingly to setting element 32 in first direction through retaining member 33, avoid turning in-process setting element 32 to deviate from in the tight piece 31 that expands under the effect of turning stress, improved and treated the machining precision of machined part 1, improved the yields and the work efficiency of work piece simultaneously.

The expansion piece 31 is provided with an abdicating groove 311, the abdicating groove 311 penetrates through the expansion piece 31 along the radial direction and the axial direction of the clamping body 2, the positioning piece 32 moves in the expansion piece 31 along the opposite direction of the first direction through the locking piece 33, and the gap of the abdicating groove 311 is increased under the supporting force of the positioning piece 32 by the expansion piece 31.

Wherein, the expansion piece 31 is made of soft material and can deform under the action of pressure, so as to extrude the workpiece 1 to be processed.

The abdicating groove 311 can be rectangular, the width of the abdicating groove 311 is 1.5mm in the embodiment of the present application, and the abdicating groove 311 simultaneously penetrates through the expansion piece 31 along the radial direction and the axial direction of the expansion piece 31, so that the cross section perpendicular to the central axis in the expansion piece 31 is substantially C-shaped.

Specifically, the setting element 32 moves on the clamping body 2 along the opposite direction of the first direction and enters into the expansion piece 31, under the action of the setting element 32, the expansion piece 31 deforms, the gap of the abdicating seam increases, the setting element 32 treats the workpiece 1 through the expansion piece 31 to provide the pressure in the radial direction, and the pressure is uniformly distributed along the circumferential direction of the workpiece 1 so that the workpiece 1 can not deform in the turning process.

In this application, through setting up setting element 32 and seted up the abdication seam on the tight piece 31 that expands, can realize radially exerting pressure to the tight piece 31 that expands through setting element 32, the tight piece 31 that expands takes place deformation, the gap increase of abdication seam, so that the tight piece 31 that expands with treat that machined part 1 is laminated completely, can realize expanding the tight piece 31 and be full of and treat 1 hole of machined part, so that treat 1 excircle turning in-process atress of machined part even, can avoid the turning in-process to treat that phenomenon such as deckle edge appears in 1 excircle of machined part, tear and warp, thereby excircle thin wall circularity after the turning is high, excircle roughness has been improved, machining precision is effectively improved, the yields and the work efficiency of work piece have also been improved simultaneously.

In the embodiment of the present application, as an implementation mode, the inner wall of the expansion piece 31 is conical, the outer wall of the positioning piece 32 is conical, and the locking piece 33 applies a force in the radial direction to the expansion piece 31 through the positioning piece 32, so that the outer wall of the expansion piece 31 is attached to the inner wall of the workpiece 1 to be processed.

Wherein, setting element 32 is made for the stereoplasm material, and the external diameter crescent of setting element 32 along first direction, and the internal diameter crescent of expanding piece 31 along first direction matches, and setting element 32 and the piece 31 that expands cooperate, and back in setting element 32 removed the piece 31 that expands, and the outer wall of setting element 32 and the inner wall of the piece 31 that expands are laminated mutually.

Specific, the biggest external diameter of setting element 32 slightly is greater than the biggest external diameter of bloated tight piece 31, the minimum internal diameter of setting element 32 is the same with the minimum internal diameter of bloated tight piece 31, the setting element 32 can enter into bloated tight piece 31 completely, provide the pressure of circumference direction for bloated tight piece 31 through setting element 32, so that the groove 311 that gives way of bloated tight piece 31 increases, can realize bloated tight piece 31 and treat that machined part 1 laminates completely, can realize bloating tight piece 31 and be full of and treat 1 hole of machined part, so that treat that 1 excircle turning in-process atress of machined part is even, can avoid treating that 1 excircle of machined part appears deckle edge in the turning process, phenomenons such as tear and deformation, treat simultaneously that the excircle thin wall circularity after 1 turning of machined part is high, the excircle surface roughness has been improved, thereby effectively improve the machining precision, the yields and the work efficiency of work piece have also been improved simultaneously.

As another embodiment, the expansion member 31 is cylindrical, the positioning member 32 is cylindrical, the inner wall of the expansion member 31 contacts the outer wall of the positioning member 32, and the positioning member 32 is disposed between the workpiece 1 to be machined and the clamping body 2.

The positioning member 32 is made of an elastic material, the positioning member 32 has the same outer diameter along the first direction, the expansion member 31 has the same inner diameter along the first direction, and the outer diameter of the positioning member 32 is slightly larger than the inner diameter of the expansion member 31.

Specific, setting element 32 receives retaining member 33's thrust, setting element 32 takes place elastic deformation and is compressed towards the tight piece 31 removal process that expands, setting element 32 removes in the tight piece 31 that expands, setting element 32 provides the elastic force opposite with pressure direction for the tight piece 31 that expands, the tight piece 31 that expands laminates with the processing work piece of generation under the effect of setting element 32 elastic force, provide the elastic force of circumference direction for the tight piece 31 that expands through setting element 32, so that the groove 311 that lets that expands of tight piece 31 increases, can realize expanding tight piece 31 and treat that machined part 1 laminates completely, can realize expanding tight piece 31 and be full of and treat 1 hole of machined part, so that treat that 1 cylindrical turning in-process atress of machined part is even, can avoid the turning in-process to treat that 1 excircle of machined part appears deckle edge, phenomenon such as tearing and deformation, treat simultaneously that the thin wall circularity after 1 turning of machined part is high, cylindrical surface roughness has been improved, thereby effectively improving the machining precision, the yields and the work efficiency of work piece have also been improved simultaneously.

The length of the expanding member 31 is larger than that of the member to be processed 1, so that one end of the expanding member 31 far away from the stopping portion 21 extends out of the member to be processed 1.

Specifically, the expansion member 31 is disposed in the member to be processed 1, and one end of the expansion member 31 extends out of the member to be processed 1.

In this application, be greater than the length of treating machined part 1 through the length that sets up bloated piece 31 to make bloated piece 31 with treat that also some allowances when machined part 1 laminates completely, make things convenient for turning in-process intensive cutting, improved work efficiency.

The clamping body 2 further comprises a connecting portion 22, the length of the connecting portion 22 is greater than the sum of the lengths of the workpiece 1 to be machined and the positioning portion 32, and the positioning portion 32 moves on the connecting portion 22 in a direction towards or away from the workpiece 1 to be machined.

Wherein, connecting portion 22 can be cylindrical, and connecting portion 22 sets up in clamping body 2 first direction side, and the reverse side of the first direction of connecting portion 22 and backstop portion 21 fixed connection, and its connected mode can be bolted connection, treats that machined part 1, bloated tight piece 31, setting element 32 and retaining member 33 overlap in proper order along the first direction and establish on connecting portion 22.

Specifically, connecting portion 22 with treat machined part 1, bloated tight piece 31 and setting element 32 sliding connection, connecting portion 22 and retaining member 33 threaded connection, the length of connecting portion 22 is greater than the length of treating machined part 1 and setting element 32 and, bloated tight piece 31 and setting element 32 have sufficient displacement distance on connecting portion 22, conveniently adjust the circumference pressure that bloated tight piece 31 provided to treating machined part 1 through setting element 32, avoid the circumference pressure that bloated tight piece 31 provided, cause and treat machined part 1 and damage.

The diameter of the connecting portion 22 is smaller than the diameter of the through hole of the workpiece 1 to be processed, so that the end surface of the workpiece 1 to be processed can be sufficiently attached to the stopper portion 21, and the bottom of the workpiece 1 to be processed is prevented from being warped.

In this application, for treating machined part 1, bloated tight piece 31, setting element 32 and retaining member 33 provide the mounted position through setting up connecting portion 22, treat machined part 1 simultaneously and play a supporting role, treat machined part 1 through setting element 32 on radial direction and carry on spacingly, avoid the turning in-process, treat that machined part 1 takes place to rock in radial direction, and then improved the yields of treating machined part 1 machining precision and work piece.

The clamping body 2 further comprises an embracing clamping portion 23, a first direction side of the embracing clamping portion 23 is fixedly connected with the stopping portion 21, and a reverse side of the first direction side of the embracing clamping portion 23 is fixedly connected with the driving device, so that the driving device drives the workpiece 1 to be machined to rotate through the embracing clamping portion 23.

The clasping portion 23 may be cylindrical, the clasping portion 23 is disposed on the reverse side of the first direction of the clamping body 2, the first direction of the clasping portion 23 is fixedly connected to the reverse side of the first direction of the stopping portion 21, and the connecting manner may be a bolt connection.

The diameter of the clasping part 23 is larger than that of the stopping part 21, and the diameter of the stopping part 21 is larger than that of the connecting part 22.

Specifically, the drive arrangement can be the lathe pivot, and the lathe pivot can be dismantled with the reverse side of embracing the first direction side of pressing from both sides portion 23 and be connected, rotates through drive arrangement drive clamping body 2 and drives and treat that machined part 1 rotates, embraces through setting up and press from both sides portion 23 and provide reliable clamping position for the drive arrangement to the messenger treats that machined part 1 turning process is more stable.

The application provides a turning frock for it is fixed to treat machined part 1, can realize through setting up the piece 31 that expands that the turning frock is full of and treats 1 hole of machined part, so that treat 1 external turning in-process atress of machined part even, can avoid the turning in-process to treat that the machined part excircle deckle edge appears, tear and phenomenons such as warp, can realize treating that the excircle thin wall circularity after 1 turning of machined part is high, the external circle roughness has been improved, thereby effectively improve the machining precision, the yields and the work efficiency of work piece have also been improved simultaneously. Simultaneously can provide the holding power for the tight piece 31 that expands through setting up the setting element 32, so that the tight piece 31 that expands can take place deformation and treat that machined part 1 laminates completely, setting element 32 and 2 coaxial settings of clamping body can carry on spacingly in radial direction for the tight piece 31 that expands simultaneously, also treat that machined part 1 locks in the position of radial direction, avoid the turning in-process, treat that machined part 1 takes place to rock in radial direction, and then improved the yields of treating 1 machining precision of machined part and work piece, also avoid treating that machined part 1 rocks in radial direction and hit bad lathe tool simultaneously.

It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.

The present application is intended to cover various modifications, equivalent arrangements, and adaptations of the present application without departing from the spirit and scope of the present application. The foregoing are only preferred embodiments of the present application, and it should be noted that, for those skilled in the art, many modifications and variations can be made without departing from the technical principle of the present application, and these modifications and variations should also be considered as the protection scope of the present application.

Claims (10)

1. The utility model provides a turning frock, its characterized in that for fixed machined part (1) of treating, the turning frock includes clamping body (2) and fastener (3), it establishes to treat machined part (1) cover on clamping body (2), fastener (3) are including expanding tight piece (31), it sets up along circumference to expand tight piece (31) clamping body (2) outer wall with treat between machined part (1) inner wall, be used for doing treat that machined part (1) provides the holding power of radial direction.

2. The turning tool according to claim 1, characterized in that the clamping body (2) penetrates through the workpiece (1) to be machined in a first direction, the clamping body (2) comprises a stop portion (21), the workpiece (1) to be machined is abutted against the stop portion (21), and the stop portion (21) is located on the reverse side of the first direction of the workpiece (1) to limit the position of the workpiece (1) to be machined in the reverse direction of the first direction.

3. The turning tool according to claim 2, wherein the fastening device (3) further comprises a positioning part (32), the positioning part (32) is sleeved on the clamping body (2), the positioning part (32) is arranged on the first direction side of the expanding part (31), the outer wall of the positioning part (32) is in contact with the inner wall of the expanding part (31), the positioning part (32) and the clamping body (2) are coaxially arranged, and the positioning part (32) limits the expanding part (31) in the radial direction.

4. The turning tool according to claim 3, characterized in that the fastening device (3) further comprises a locking member (33), the locking member (33) is disposed on the first direction side of the positioning member (32), and the locking member (33) is configured to apply a force to the positioning member (32) in a direction opposite to the first direction, so that the positioning member (32) moves into the expanding member (31).

5. The turning tool according to claim 4, characterized in that an abdicating groove (311) is formed in the expanding piece (31), the abdicating groove (311) penetrates through the expanding piece (31) along the radial direction and the axial direction of the clamping body (2), the positioning piece (32) moves in the expanding piece (31) along the opposite direction of the first direction through the locking piece (33), and the expanding piece (31) is under the supporting force effect of the positioning piece (32), and the gap of the abdicating groove (311) is increased.

6. The turning tool according to claim 5, characterized in that the inner wall of the expanding piece (31) is conical, the outer wall of the positioning piece (32) is conical, and the locking piece (33) exerts force on the expanding piece (31) in the radial direction through the positioning piece (32) so that the outer wall of the expanding piece (31) is attached to the inner wall of the workpiece (1).

7. The turning tool according to claim 5, characterized in that the expanding piece (31) is cylindrical, the positioning piece (32) is cylindrical, the inner wall of the expanding piece (31) is in contact with the outer wall of the positioning piece (32), and the positioning piece (32) is arranged between the workpiece (1) to be machined and the clamping body (2).

8. The turning tool according to claim 7, characterized in that the length of the expanding piece (31) is greater than the length of the workpiece (1) to be machined, so that one end of the expanding piece (31) away from the stop (21) extends out of the workpiece (1).

9. The turning tool according to claim 8, wherein the clamping body (2) further comprises a connecting portion (22), the length of the connecting portion (22) is greater than the sum of the lengths of the workpiece (1) to be machined and the positioning member (32), and the positioning member (32) moves on the connecting portion (22) in a direction towards or away from the workpiece (1) to be machined.

10. The turning tool according to claim 9, wherein the clamping body (2) further comprises a clamping holding portion (23), the first direction side of the clamping holding portion (23) is fixedly connected with the stopping portion (21), and the reverse side of the first direction side of the clamping holding portion (23) is fixedly connected with a driving device, so that the driving device drives the workpiece to be machined (1) to rotate through the clamping holding portion (23).

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