CN210756479U - Vibration reduction tool for machining thin-wall cylindrical workpiece - Google Patents
Vibration reduction tool for machining thin-wall cylindrical workpiece Download PDFInfo
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- CN210756479U CN210756479U CN201921263051.8U CN201921263051U CN210756479U CN 210756479 U CN210756479 U CN 210756479U CN 201921263051 U CN201921263051 U CN 201921263051U CN 210756479 U CN210756479 U CN 210756479U
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Abstract
The utility model relates to a damping frock for processing thin wall cylindric work piece. The vibration reduction tool for processing the thin-wall cylindrical workpiece comprises a tool base, wherein an inner supporting device is arranged on the tool base, and the inner supporting device comprises a workpiece inner wall supporting piece, a supporting piece pushing block and a pushing block driving unit; the workpiece inner wall supporting pieces are more than three and are uniformly distributed around the axis of the tool base, and are arranged on the tool base in a guiding and moving manner along the radial direction of the tool base; the supporting piece pushing block is arranged in the middle space surrounded by the supporting pieces on the inner wall of each workpiece and forms wedge surface matching with the supporting pieces on the inner wall of each workpiece; the pushing block driving unit is connected between the tooling base and the supporting piece pushing block and used for driving the supporting piece pushing block to move up and down so as to realize the synchronous movement of the supporting piece on the inner wall of each workpiece along the radial direction of the base through the wedge surface. Compared with the scheme of supporting the cylindrical workpiece by adopting the hydraulic cylinders arranged along the circumferential direction of the cylindrical workpiece, the hydraulic support device has the advantages of simple structure and low cost.
Description
Technical Field
The utility model relates to a damping frock for processing thin wall cylindric work piece.
Background
In the process of machining thin-wall cylindrical titanium and aluminum alloy workpieces, the problem of vibration is inevitably encountered, and the vibration can cause deformation of the workpieces and difficult guarantee of wall thickness tolerance. In the prior art, a special tool is usually manufactured, and vibration is avoided in the workpiece machining process by adopting a pressing and jacking mode. Because the diameter and the specification of the workpiece to be processed are different, different special tools need to be manufactured aiming at different workpieces, the cost is high, and the efficiency is low.
The Chinese patent application with the application publication number of CN103949903A and the application publication date of 2014, 07 and 30 discloses a shape following positioning method for a thin-wall ring part, wherein a plurality of hydraulic oil cylinders are arranged around the thin-wall ring part, the thin-wall ring part is clamped by acting force of the hydraulic oil cylinders on the thin-wall ring part, and the positioning method can be suitable for thin-wall ring parts with various diameters and specifications because output rods of the hydraulic oil cylinders have certain strokes.
However, the positioning method needs a large number of hydraulic cylinders and a stepping motor for transmission, and is complex in structure and high in cost.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a damping frock for processing thin wall cylindric work piece for the location frock structure among the solution prior art is complicated, problem with high costs.
In order to achieve the above object, the utility model discloses in be arranged in processing the technical scheme of the damping frock of thin wall cylindric work piece is: the vibration reduction tool for processing the thin-wall cylindrical workpiece comprises a tool base, wherein the tool base is used for being fixed on a workbench of processing equipment and is provided with a workpiece supporting surface for supporting the end surface of one axial end of the cylindrical workpiece; the tool base is provided with a base axial direction and a base radial direction which respectively correspond to the axial direction and the radial direction of the workpiece on the tool base;
the tool base is provided with an inner supporting device, and the inner supporting device comprises a workpiece inner wall supporting piece, a supporting piece pushing block and a pushing block driving unit;
the workpiece inner wall supporting pieces are more than three and are uniformly distributed around the axis of the tool base, and are arranged on the tool base in a guiding and moving manner along the radial direction of the tool base; one side of the workpiece inner wall supporting piece, which corresponds to the radial outer side of the base, is provided with a supporting part for supporting the inner wall of the workpiece so as to realize vibration reduction of the workpiece;
the supporting piece pushing block is arranged in the middle space surrounded by the supporting pieces on the inner wall of each workpiece and forms wedge surface matching with the supporting pieces on the inner wall of each workpiece;
and the pushing block driving unit is connected between the tool base and the supporting piece pushing block and is used for driving the supporting piece pushing block to move up and down so as to realize the synchronous movement of the supporting piece on the inner wall of each workpiece along the radial direction of the base through the wedge surface.
The utility model discloses well damping frock that is used for processing thin wall cylindric work piece's beneficial effect is: the cylindrical workpiece is supported on the tool base, the pushing block driving unit drives the supporting piece to push the pushing block to move up and down, when the supporting piece pushes the pushing block to move up and down, the wedge surface of the supporting piece pushes the pushing block to be matched with the wedge surface of the workpiece inner wall supporting piece, each workpiece inner wall supporting piece is pushed to move along the radial direction of the tool base until the pushing block is supported on the cylindrical workpiece, the cylindrical workpiece is prevented from shaking during machining through the supporting effect of the workpiece inner wall supporting piece on the workpiece, and compared with the scheme that the cylindrical workpiece is supported by the hydraulic cylinders arranged along the circumferential direction of the cylindrical workpiece, the tool base is simple in structure.
Furthermore, the pushing block driving unit is a screw rod which is fixedly arranged on the tool base,
the supporting piece pushing block is an adjusting nut in threaded fit with the lead screw, and the adjusting nut is in running fit with the workpiece inner wall supporting piece.
The device has the advantages of simple structure and convenient operation.
Furthermore, a compression nut in threaded fit with the lead screw is arranged at the top of the adjusting nut and used for compressing the supporting piece pushing block.
The screw rod has the beneficial effects that the position of the adjusting nut on the screw rod is ensured, so that the workpiece is reliably supported by the workpiece inner wall supporting piece.
Furthermore, an inclined plane is arranged on one side, close to the pushing block driving unit, of the workpiece inner wall supporting piece, and the wedge surface is formed by the inclined plane on the workpiece inner wall supporting piece; the top end or the bottom end of the adjusting nut, which is used for being in contact with the workpiece inner wall supporting piece, is provided with a chamfer or a fillet, and the chamfer or the fillet is supported on the inclined plane in a sliding manner.
The novel electric heating furnace has the beneficial effects of simple structure and convenience in processing.
Further, a guide groove is formed in the tool base in the radial direction of the tool base, the bottom of the workpiece inner wall supporting piece is connected in an inserting mode through the guide groove, so that the workpiece inner wall supporting piece can move on the tool base in the radial direction of the tool base in a moving mode, and the wedge face is arranged on the tool base in the oblique direction towards the outer side of the radial direction of the base.
The guide device has the advantages of simple structure, convenience in processing and reliability in guiding.
Furthermore, a return spring is arranged in the guide groove and applies a pushing force which is inward in the radial direction towards the base to the workpiece inner wall supporting piece.
The workpiece processing device has the beneficial effects that the workpiece after processing can be conveniently taken out and put in to be processed.
Further, work piece inner wall support piece includes plate body and plastic support pad, and the plastic support pad setting is in the plate body and the radial outside one side that corresponds of base, and the plate body is used for and support piece top ejector pad cooperation, the supporting part comprises plastic support board.
The support has the advantage that the weight of the workpiece inner wall support is reduced.
Furthermore, the supporting part is provided with a supporting surface used for being matched with the workpiece, and the supporting surface is an arc surface.
The workpiece support device has the beneficial effect that the contact area between the workpiece inner wall support and the workpiece is increased.
Further, an outer supporting device is further arranged on the tool base and comprises a supporting seat and a workpiece outer wall supporting piece;
the supporting seat is fixed on the tool base and used for surrounding the radial outer side of the workpiece;
the workpiece outer wall supporting pieces are arranged at more than three positions, are uniformly distributed around the axis of the tool base and are used for supporting the outer wall of the workpiece along the radial direction of the base;
the supporting seat is provided with a jacking and adjusting unit, and the workpiece outer wall supporting piece is connected to the telescopic end of the jacking block driving unit so as to be pressed onto the outer wall of the workpiece under the driving of the jacking and adjusting unit.
The cylindrical workpiece machining device has the beneficial effects that the cylindrical workpiece machining device can be better suitable for the condition of machining the inner wall of the cylindrical workpiece.
Furthermore, the supporting seat is in threaded connection with at least two adjusting screws, the axes of the adjusting screws are parallel to the adjusting direction of the workpiece outer wall supporting piece, the back of the workpiece outer wall supporting piece is provided with screw inserting holes for inserting the front ends of the adjusting screws, the screw inserting holes are used for enabling the workpiece outer wall supporting piece to be supported on the adjusting screws, and the jacking adjusting unit is composed of the adjusting screws; or, the workpiece outer wall supporting piece is radially and movably arranged on the supporting seat along the base, a jacking screw is arranged between the supporting seat and the workpiece outer wall supporting piece, the jacking screw is used for pushing the workpiece outer wall supporting piece to support the outer wall of the workpiece, and the jacking adjusting unit is composed of jacking screws.
The device has the advantages of simple structure and low cost.
Drawings
Fig. 1 is a three-dimensional view of an embodiment of the thin-walled cylindrical workpiece processing tool of the present invention;
fig. 2 is a top view of an embodiment of the thin-walled cylindrical workpiece processing tool of the present invention;
fig. 3 is a top view of a tool base of an embodiment of the thin-walled cylindrical workpiece processing tool of the present invention;
fig. 4 is a sectional view of a plate body in an embodiment of the thin-walled cylindrical workpiece processing tool of the present invention;
fig. 5 is a sectional view of an adjusting nut in an embodiment of the thin-walled cylindrical workpiece processing tool of the present invention;
fig. 6 is a three-dimensional view of a support seat in an embodiment of the thin-walled cylindrical workpiece processing tool of the present invention;
fig. 7 is a three-dimensional view of a workpiece outer wall support member in an embodiment of the thin-walled cylindrical workpiece processing tool of the present invention;
in the figure: 1. the tool comprises a tool base, 2, a guide groove, 3, a reset spring, 4, a lead screw, 5, an adjusting nut, 51, a matching portion, 6, a compression nut, 7, a workpiece inner wall supporting piece, 71, a plate body, 711, an inclined plane, 72, a plastic supporting pad, 8, a supporting column, 9, a supporting ring body, 10, an adjusting screw, 11, a workpiece outer wall supporting piece, 111, a jacking surface, 112, a screw jack, 113, a clamping groove, 12, a fixing hole, 13 and a through hole.
Detailed Description
The following describes embodiments of the present invention with reference to the accompanying drawings.
The utility model discloses in be used for processing a concrete embodiment of damping frock (hereinafter damping frock) of thin wall cylindric work piece, as shown in fig. 1 and fig. 2, the damping frock includes fixture base 1, interior strutting arrangement and outer strutting arrangement. As shown in fig. 3, the whole tool base 1 is a circular plate, the upper plate surface of the tool base 1 is used for positioning and supporting the end surface of one axial end of the cylindrical workpiece, the upper plate surface of the tool base 1 forms a workpiece supporting surface, and when in use, the axial direction of the tool base 1 corresponds to the axial direction of the cylindrical workpiece on the tool base 1; the radial direction of the tool base 1 corresponds to the radial direction of the cylindrical workpiece on the tool base 1. Two grooves are formed in the workpiece supporting surface along the diameter of the tool base 1 and are perpendicular to each other, the grooves are divided into two guide grooves 2 by the center of the axis of the tool base 1 penetrating through the grooves, fixing holes 12 are further formed in the tool base 1, and the fixing holes 12 are used for fixing the vibration reduction tool to the tool installation base.
As shown in fig. 4 and 5, the inner supporting device is arranged on the tooling base 1, and comprises a workpiece inner wall supporting piece 7, an adjusting nut 5 and a screw rod 4. The workpiece inner wall supporting pieces 7 are uniformly arranged at four positions around the axis of the tool base 1, and the workpiece inner wall supporting pieces 7 at the four positions correspond to the guide grooves 2 at the four positions respectively. Workpiece inner wall support piece 7 is including the plate body 71 and the plastic support pad 72 that link firmly each other, and plastic support pad 72 sets up in the plate body 71 and the radial outside one side that corresponds of fixture base 1, and the vertical just face of placing of plate body 71 is on a parallel with the diameter of fixture base 1, and the lower extreme of plate body 71 inserts in fixture base 1's guide way 2 to can follow the extending direction guide movement who corresponds guide way 2. The end face of the plate body 71 for fitting with the adjusting nut 5 is an inclined plane 711 inclined in the vertical direction, and the end face of the plate body 71 for fitting with the plastic support pad 72 is a vertical plane.
The plastic support pad 72 is used for supporting the inner wall of the cylindrical workpiece so as to realize workpiece vibration reduction, the surface of the plastic support pad 72, which is used for abutting against the inner wall of the cylindrical workpiece, is an arc surface, the arc surface can reduce stress concentration generated by the plastic support pad 72 on the inner wall surface of the cylindrical workpiece, and the arc surface forms a support surface. The plastic support pad 72 is used for being the plane with plate body 71 complex face, can form the cooperation of face and face with plate body 71, prevents that plastic support pad 72 from taking place the beat, guarantees plastic support pad 72 and to the reliable support of cylindric work piece, and plastic support pad 72 forms the supporting part. The plastic support pad 72 is connected to the plate body 71 in the following manner: the supporting surface is provided with a counter bore, a fixing bolt is arranged in the counter bore, and the tail end of the fixing bolt penetrates through the plastic supporting pad 72 to be in threaded connection with the plate body 71.
The lead screw 4 is fixed on the tool base 1 and is coaxial with the tool base 1. The adjusting nut 5 is connected to the screw rod 4 in a threaded manner, and the adjusting nut 5 moves up and down while rotating around the axis of the screw rod 4 by the acting force of the lead angle of the thread on the screw rod 4 on the adjusting nut 5. The outer peripheral surface of the adjusting nut 5 is a cylindrical surface, and the edge of the lower end surface of the adjusting nut 5 is in running fit with the inclined surface 711 of the plate body 71, so that the workpiece inner wall support 7 is pushed to move outwards along the radial direction of the tool base 1 in the downward moving process of the adjusting nut 5, and the support surface is pressed onto the inner wall of the cylindrical workpiece. The edge of the lower end face of the adjusting nut 5 forms an engaging portion 51, and the engaging portion 51 is provided with a rounded corner to prevent the engaging portion 51 and the inclined surface 711 of the plate body 71 from being excessively worn to affect the reliable operation of the adjusting nut 5.
The groove is in a form of two closed ends, the end parts of the groove are provided with the return springs 3, the return springs 3 are pressed between the end parts of the groove and the corresponding plate bodies 71, and the return springs 3 are in a compressed state so as to apply inward thrust to the inner wall supporting piece along the extending direction of the guide groove 2.
The lead screw 4 is further connected with a compression nut 6 in a threaded mode, the compression nut 6 is arranged at the top of the adjusting nut 5, and the compression nut 6 is used for compressing the adjusting nut 5 to prevent the adjusting nut 5 from moving upwards under the action of the elastic force of the reset spring 3 and the pushing force of the cylindrical workpiece on the plastic supporting pad 72.
As shown in fig. 6, the outer supporting device includes a supporting seat and a workpiece outer wall supporting member 11, the supporting seat is a frame structure detachably fixed on the tool base 1, and the supporting seat includes a supporting column 8 and a supporting ring body 9. The specific detachable form is that the tool base 1 is provided with a through hole 13 along the axial direction of the tool base 1, the lower end face of the support column 8 is provided with a pin hole, the support column 8 is detachably fixed on the tool base 1 through the matching of a pin penetrating from the bottom of the tool base 1 and the pin hole, the pin is in interference fit with the pin hole, and the connection stability of the outer support device and the tool base is kept by the gravity of the outer support device. The support column 8 is along fixture base 1's circumference evenly distributed and along fixture base 1's axial extension, and the supporting ring body 9 is equipped with two, fixes on support column 8 along fixture base 1's axial interval, and the equal perpendicular to fixture base 1's of supporting ring body 9 place plane axis, and the supporting ring body 9 is used for enclosing the radial outside of establishing the work piece.
As shown in fig. 7, the workpiece outer wall supporting piece 11 is divided into an upper layer and a lower layer along the axial direction of the tool base 1, the workpiece outer wall supporting pieces 11 are uniformly arranged at four positions around the axis of the tool base 1, and the workpiece outer wall supporting piece 11 is used for supporting the outer wall of the cylindrical workpiece by abutting against the outer wall of the cylindrical workpiece. The workpiece outer wall supporting piece 11 is an arc-shaped plate integrally and is provided with a top pressing surface 111 for pressing the outer wall of the workpiece, and the top pressing surface 111 is an arc-shaped concave surface. The back of the workpiece outer wall supporting piece 11, which faces away from the top pressing surface 111, is provided with a clamping groove 113, the clamping groove 113 is used for being clamped on the supporting ring body 9, when the displacement of the workpiece outer wall supporting piece 11 is small, the supporting ring body 9 can form auxiliary support for the workpiece outer wall supporting piece 11 through the clamping groove 113, the clamping groove 113 is internally provided with a screw insertion hole 112, and the screw insertion hole 112 is a blind hole.
Each layer of workpiece outer wall supporting piece 11 corresponds to one supporting ring body 9, an adjusting screw 10 is connected to the supporting ring body 9 along the circumferential direction in a threaded manner, and the axis of the adjusting screw 10 is along the radial direction of the tool base 1. Adjusting screw 10 corresponds work piece outer wall support piece 11 and sets up, and every work piece outer wall support piece 11 corresponds three adjusting screw 10, and the front end of adjusting screw 10 is equipped with the plain noodles section, and screw jack 112 is pegged graft with the plain noodles section and is cooperated in order to carry out spacing on work piece outer wall support piece 11 in vertical direction. The workpiece outer wall supporting piece 11 is in running fit with the adjusting screw 10, the adjusting screw 10 enables the front end of the adjusting screw 10 to move back and forth when rotating, the adjusting screw 10 drives the workpiece outer wall supporting piece 11 to be pressed onto the cylindrical workpiece or releases the pressing of the cylindrical workpiece, the adjusting screw 10 guides the movement of the workpiece outer wall supporting piece 11, the moving direction of the workpiece outer wall supporting piece 11 is enabled to be along the radial direction of the tool base 1, and the adjusting screw 10 forms a jacking adjusting unit.
In the above structure, the adjusting nut 5, the return spring 3 and the plate body 71 are made of steel, the plastic supporting pad 72 is made of polyimide, and other structures are made of titanium alloy.
The utility model discloses a working process for processing damping frock of thin wall cylindric work piece: the cylindrical workpiece is supported on a workpiece supporting surface of the tool base 1 and is placed between the outer supporting device and the inner supporting device, the adjusting nut 5 is rotated to enable the adjusting nut 5 to move downwards to push the workpiece outer wall supporting piece 11 to move outwards until the plastic supporting pad 72 is supported on the inner wall of the cylindrical workpiece, then the compression nut 6 is screwed to enable the compression nut 6 to be compressed onto the adjusting nut 5, and the compression nut 6 is matched with the plate body 71 to limit the position of the adjusting nut 5 together. The plastic support pad 72 uniformly supports the inner wall of the cylindrical workpiece along the circumferential direction of the cylindrical workpiece to reduce chattering of the cylindrical workpiece during machining.
And screwing the adjusting screw 10 to enable the adjusting screw 10 to push the workpiece outer wall supporting piece 11 to move inwards until the workpiece outer wall supporting piece 11 uniformly supports the outer wall of the cylindrical workpiece along the circumferential direction of the cylindrical workpiece, so that the vibration generated in the machining process of the cylindrical workpiece is further reduced.
When the outer wall surface of the cylindrical workpiece is processed, the outer supporting device can be taken down, the cylindrical workpiece is supported by the inner supporting device and the tool base 1, the vibration of the cylindrical workpiece in the processing process is avoided, and the outer wall surface of the cylindrical workpiece has a larger operation space. Similarly, when the inner wall surface of the cylindrical workpiece is processed, the inner supporting device can also be taken down.
After the cylindrical workpiece is machined, the adjusting screw 10 is reversely screwed to enable the adjusting screw 10 to move outwards, and the smooth section of the adjusting screw 10 is matched with the workpiece outer wall supporting piece 11 in an inserting mode to drive the workpiece outer wall supporting piece 11 to reset. The compression nut 6 is screwed to release the compression of the compression nut 6 on the adjusting nut 5, the adjusting nut 5 is screwed to move upwards to release the pushing of the plate body 71, the workpiece inner wall supporting piece 7 releases the support of the inner wall of the cylindrical workpiece under the elastic action of the return spring 3, the cylindrical workpiece after being processed is taken out, and then the operation is repeated to process the next cylindrical workpiece to be processed.
In this embodiment, the inner support means and the outer support means are provided at the same time, and in other embodiments, only the inner support means may be provided.
In this embodiment, a position on the support member pushing block for fitting with the workpiece inner wall support member 7 is provided with a rounded corner, and in other embodiments, other manners may be adopted to ensure that the support member pushing block and the workpiece inner wall support member are reliably slidably fitted, for example, a tapered surface or a chamfered corner is processed on the outer circumferential surface of the support member pushing block, and the inclination angle of the tapered surface or the chamfered corner is the same as the inclination angle of the inclined surface of the plate body.
In this embodiment, the surface of the plate body 71 that mates with the adjusting nut 5 is an inclined surface 711, and the outer circumferential surface of the adjusting nut 5 is a cylindrical surface.
In other embodiments, a tightening nut may not be provided, the position of the adjusting nut is maintained by the self-locking capability of the threads, or the axial through hole of the adjusting nut is a unthreaded hole, and the adjusting nut is pushed to move downwards by the cooperation of the tightening nut and the lead screw, at this time, the outer peripheral surface of the adjusting nut may be in a form other than a cylindrical surface, for example, the whole cylindrical surface, and a guide groove corresponding to the plate body is provided on the cylindrical surface.
In the embodiment, a screw rod 4 is in threaded fit with an adjusting nut 5; the adjusting nut 5 and the workpiece inner wall supporting piece 7 are in rotating fit to push the workpiece inner wall supporting piece 7 to move outwards along the radial direction of the tool base 1, so that the workpiece inner wall supporting piece 7 can support the inner wall of the workpiece, in other embodiments, other structures can be adopted to push the workpiece inner wall supporting piece, for example, a lead screw is replaced by a piston cylinder, a hydraulic cylinder or an electric pole, the adjusting nut is driven by the piston cylinder, the hydraulic cylinder or the electric pole to move up and down to form wedge surface fit with the inclined surface of the plate body, and the corresponding piston cylinder, the hydraulic cylinder or the electric pole forms a pushing block driving unit.
In this embodiment, the moving direction of the workpiece inner wall support member 7 is guided by the form of providing the guide groove 2 for inserting the bottom of the plate body 71 on the tool base 1, and in other embodiments, the moving direction of the workpiece inner wall support member may be guided by other forms, for example, a guide rail is provided on the tool base, a groove for accommodating the guide rail is provided on the lower end surface of the plate body, the guide rail is a T-shaped guide rail, and the groove is a T-shaped groove.
In other embodiments, the return spring may not be provided, and the workpiece inner wall support may be manually returned by an operator to facilitate the removal and installation of the cylindrical workpiece.
In the present embodiment, the workpiece inner wall support 7 is composed of a plate body 71 and a plastic support pad 72, but in other embodiments, the workpiece inner wall support 7 may have other structures, for example, the workpiece inner wall support is composed of only a plate body having a support surface for supporting a cylindrical workpiece. In this embodiment, the supporting surface is a circular arc surface, and in other embodiments, the supporting surface may have other forms, such as a vertical straight surface.
In this embodiment, the supporting seat is provided with a layer, and the supporting seat includes two supporting ring bodies 9, and the two supporting ring bodies 9 are fixed on the same group of supporting columns 8 at intervals along the axial direction of the base. In other embodiments, two support ring bodies may be arranged in other structures, for example, two layers of support seats are arranged along the axial direction of the tool base, each layer of support seat includes one support ring body and one group of support columns, and the two layers of support seats are detachably fixed, that is, the support columns of the upper layer of support seat are detachably fixed on the upper end face of the support ring body of the lower layer of support seat.
In this embodiment, the workpiece outer wall supporting members 11 are divided into two layers along the axial direction of the base, and the two layers of workpiece outer wall supporting members 11 correspond to the two supporting ring bodies 9 respectively.
In this embodiment, two support ring bodies are provided, and in other embodiments, the number of the support ring bodies may be adjusted according to actual use requirements, for example, one or more than three support ring bodies are provided.
In this embodiment, the supporting seat is a frame structure, in other embodiments, the supporting seat may be in other forms, for example, a cylindrical structure, or may be formed by supporting columns arranged along the circumferential direction of the fixture base, and at this time, the adjusting screws may be arranged on the supporting columns along the axial direction of the fixture base, that is, each layer of outer wall supporting member corresponds to multiple layers of adjusting screws distributed along the axial direction of the base.
In this embodiment, the back of the workpiece outer wall supporting member 11 is provided with a screw insertion hole 112 in the form of a blind hole for inserting and matching the smooth surface section at the front end of the adjusting screw 10, in other embodiments, the workpiece outer wall supporting member and the adjusting screw may adopt other matching modes, for example, the back of the workpiece outer wall supporting member may not be provided with a screw insertion hole, the adjusting screw directly abuts against the back of the workpiece outer wall supporting member, at this time, a guiding structure for guiding the movement of the workpiece outer wall supporting member may be disposed on the supporting seat, and the workpiece outer wall supporting member is supported through the guiding structure.
In other embodiments, the supporting base may be detachably fixed to the device base in other forms, for example, a slot is formed in the device base for the supporting column to be inserted and matched. Alternatively, the support base may be fixed to the device base in a non-detachable manner.
In other embodiments, the support column and the fixture base may also be detachably and fixedly connected by a bolt inserted from the bottom of the fixture, or the support column and the fixture base are flange-connected.
Claims (10)
1. A damping frock for processing thin wall cylindric work piece, its characterized in that:
the fixture base is used for being fixed on a workbench of machining equipment, and a workpiece supporting surface used for supporting the end surface of one axial end of a cylindrical workpiece is arranged on the fixture base; the tool base is provided with a base axial direction and a base radial direction which respectively correspond to the axial direction and the radial direction of the workpiece on the tool base;
the tool base is provided with an inner supporting device, and the inner supporting device comprises a workpiece inner wall supporting piece, a supporting piece pushing block and a pushing block driving unit;
the workpiece inner wall supporting pieces are more than three and are uniformly distributed around the axis of the tool base, and are arranged on the tool base in a guiding and moving manner along the radial direction of the tool base; one side of the workpiece inner wall supporting piece, which corresponds to the radial outer side of the base, is provided with a supporting part for supporting the inner wall of the workpiece so as to realize vibration reduction of the workpiece;
the supporting piece pushing block is arranged in the middle space surrounded by the supporting pieces on the inner wall of each workpiece and forms wedge surface matching with the supporting pieces on the inner wall of each workpiece;
and the pushing block driving unit is connected between the tool base and the supporting piece pushing block and is used for driving the supporting piece pushing block to move up and down so as to realize the synchronous movement of the supporting piece on the inner wall of each workpiece along the radial direction of the base through the wedge surface.
2. The vibration reduction tool for machining the thin-wall cylindrical workpiece according to claim 1, characterized in that: the pushing block driving unit is a lead screw which is fixedly arranged on the tool base,
the supporting piece pushing block is an adjusting nut in threaded fit with the lead screw, and the adjusting nut is in running fit with the workpiece inner wall supporting piece.
3. The vibration reduction tool for machining the thin-wall cylindrical workpiece according to claim 2, characterized in that: and a compression nut in threaded fit with the lead screw is arranged at the top of the adjusting nut and is used for compressing the supporting piece pushing block.
4. The vibration reduction tool for machining the thin-wall cylindrical workpiece according to claim 2 or 3, characterized in that: an inclined plane is arranged on one side, close to the pushing block driving unit, of the workpiece inner wall supporting piece, and the wedge surface is formed by the inclined plane on the workpiece inner wall supporting piece; the top end or the bottom end of the adjusting nut, which is used for being in contact with the workpiece inner wall supporting piece, is provided with a chamfer or a fillet, and the chamfer or the fillet is supported on the inclined plane in a sliding manner.
5. The vibration damping tool for machining the thin-walled cylindrical workpiece according to claim 1, 2 or 3, characterized in that: the tool base is provided with a guide groove along the radial direction of the tool base, the guide groove is used for inserting the bottom of the workpiece inner wall supporting piece so that the workpiece inner wall supporting piece can move along the radial direction of the tool base and is arranged on the tool base, and the wedge surface is arranged in the oblique direction towards the radial outer side of the base.
6. The vibration reduction tool for machining the thin-wall cylindrical workpiece according to claim 5, characterized in that: and a return spring is arranged in the guide groove and applies a thrust force which is inward in the radial direction of the base to the workpiece inner wall supporting piece.
7. The vibration damping tool for machining the thin-walled cylindrical workpiece according to claim 1, 2 or 3, characterized in that: the workpiece inner wall supporting piece comprises a plate body and a plastic supporting pad, the plastic supporting pad is arranged on one side, corresponding to the radial outer side of the base, of the plate body, the plate body is used for being matched with the supporting piece pushing block, and the supporting portion is composed of a plastic supporting plate.
8. The vibration damping tool for machining the thin-walled cylindrical workpiece according to claim 1, 2 or 3, characterized in that: the supporting part is provided with a supporting surface used for being matched with a workpiece, and the supporting surface is an arc surface.
9. The vibration reduction tool for machining the thin-wall cylindrical workpiece according to claim 1, characterized in that: the tool base is also provided with an outer supporting device, and the outer supporting device comprises a supporting seat and a workpiece outer wall supporting piece;
the supporting seat is fixed on the tool base and used for surrounding the radial outer side of the workpiece;
the workpiece outer wall supporting pieces are arranged at more than three positions, are uniformly distributed around the axis of the tool base and are used for supporting the outer wall of the workpiece along the radial direction of the base;
the supporting seat is provided with a jacking and adjusting unit, and the workpiece outer wall supporting piece is connected to the telescopic end of the jacking block driving unit so as to be pressed onto the outer wall of the workpiece under the driving of the jacking and adjusting unit.
10. The vibration reduction tool for machining the thin-walled cylindrical workpiece according to claim 9, characterized in that: the supporting seat is in threaded connection with at least two adjusting screws corresponding to the same workpiece outer wall supporting piece, the axis of each adjusting screw is parallel to the adjusting direction of the workpiece outer wall supporting piece, the back of the workpiece outer wall supporting piece is provided with a screw inserting hole for inserting the front end of each adjusting screw, each screw inserting hole is used for enabling the workpiece outer wall supporting piece to be supported on the corresponding adjusting screw, and each jacking adjusting unit is composed of the corresponding adjusting screw; or, the workpiece outer wall supporting piece is radially and movably arranged on the supporting seat along the base, a jacking screw is arranged between the supporting seat and the workpiece outer wall supporting piece, the jacking screw is used for pushing the workpiece outer wall supporting piece to support the outer wall of the workpiece, and the jacking adjusting unit is composed of jacking screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921263051.8U CN210756479U (en) | 2019-08-06 | 2019-08-06 | Vibration reduction tool for machining thin-wall cylindrical workpiece |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921263051.8U CN210756479U (en) | 2019-08-06 | 2019-08-06 | Vibration reduction tool for machining thin-wall cylindrical workpiece |
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| CN210756479U true CN210756479U (en) | 2020-06-16 |
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| CN201921263051.8U Expired - Fee Related CN210756479U (en) | 2019-08-06 | 2019-08-06 | Vibration reduction tool for machining thin-wall cylindrical workpiece |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110303358A (en) * | 2019-08-06 | 2019-10-08 | 洛阳鹏起实业有限公司 | Vibration damping tooling for processing thin-walled cylinder shape workpiece |
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2019
- 2019-08-06 CN CN201921263051.8U patent/CN210756479U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110303358A (en) * | 2019-08-06 | 2019-10-08 | 洛阳鹏起实业有限公司 | Vibration damping tooling for processing thin-walled cylinder shape workpiece |
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Granted publication date: 20200616 Termination date: 20210806 |