Fixing tool for turning thin-wall part

Abstract

The fixing tool comprises a cylindrical base, a plurality of threaded bushings, an elastic bushing, a pressure adjusting assembly and a plurality of sealing parts, a positioning hole is formed in the base, a plurality of liquid storage grooves are formed in the lower end face of the side wall of the base, and the side wall of the lower end of the base extends outwards in the radial direction to form an annular plate; a through hole communicated with the liquid storage tank is formed in the outer side wall of the base; an assembly hole communicated with the liquid storage tank is formed in the annular plate; the multiple threaded bushings are correspondingly fixed to the inner walls of the assembly holes. The elastic lining sleeves the side wall of the base and can seal the through hole; the pressure adjusting assembly comprises a plunger and an adjusting bolt, and the plunger is connected into the assembly hole in a sliding and sealing mode. The adjusting bolt is in threaded connection with the threaded bushing from the outer side end of the threaded bushing and abuts against the plunger. And the sealing piece correspondingly seals the notch of the liquid storage tank. The invention provides a fixing tool for turning of a thin-walled workpiece, belongs to the technical field of machining, and can improve the workpiece fixing effect, reduce turning vibration and improve the machining quality.

Description

Technical Field

[0001] The invention relates to a fixing tool for turning a thin-walled part, belonging to the technical field of mechanical processing. Background Art

[0002] At present, the turning processing of thin-walled shaft parts in aviation products is very common. Usually, the flange is connected to the rotating shaft of the machine tool, and then the fixed tool is connected to the flange. The workpiece with turning is installed on the fixed tool. However, due to the long workpiece, thin-walled parts will vibrate during turning, which may easily cause large deviations in the size of the workpiece, or even scrap it, or produce chatter marks on the surface, resulting in substandard surface quality. However, if the force on the thin-walled parts is increased, the parts are easily damaged.

[0003] Prior art CN105081800A, a turning and fixing device for a disc roller, discloses that the roller groove on the side wall of the disc roller can be firmly fastened by the inwardly extending buckling protrusion on the chuck and the locking screw in the chuck base. At the same time, the positioning column at the center of the fixed disc head can effectively support the entire huge disc roller, but the clamping force is large and it is easy to damage thin-walled parts.

[0004] Therefore, there is an urgent need for a fixing tool that can increase the fixing force without damaging the thin-walled parts. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a fixing tool for turning thin-walled parts, which can improve the effect of workpiece fixing, reduce turning vibration and improve processing quality.

[0006] The technical solution of the present invention to solve the above technical problems is as follows: A fixed tool for turning thin-walled parts is connected to a machine tool through a flange, comprising:

[0007] A cylindrical base, wherein the axial center of the base is provided with a positioning hole penetrating through the upper and lower ends, a plurality of liquid storage tanks are arranged at intervals in the circumferential direction on the lower end surface of the side wall of the base, an annular plate of a preset thickness is radially extended outward from the lower end side wall of the base, and a through hole communicating with the liquid storage tank is arranged on the outer side wall of the base corresponding to the position above the annular plate and the liquid storage tank; an assembly hole communicating with the liquid storage tank is arranged in the annular plate along its radial direction;

[0008] A plurality of threaded bushings, wherein the plurality of threaded bushings are correspondingly fixed on the inner wall of the assembly hole;

[0009] An elastic bushing, which is sleeved on the side wall of the base and can seal the plurality of through holes;

[0010] A pressure regulating assembly, the pressure regulating assembly comprising a plunger and an adjusting bolt, the plunger being slidably and sealingly connected in the assembly hole; the adjusting bolt being threadedly connected to the threaded bushing from its outer end and abutting against the plunger;

[0011] A plurality of sealing members are provided, and the plurality of sealing members seal the notches of the plurality of liquid storage tanks in a one-to-one correspondence.

[0012] The beneficial effects of the present invention are as follows: the positioning hole is aligned with the center hole of the flange and installed on the flange, the elastic bushing is interference-fittedly sleeved on the base, the elastic bushing seals multiple through holes, the part to be turned is sleeved on the elastic bushing, the plunger is slidably sealed in the assembly hole, liquid plastic is injected into the liquid storage tank, the notch of the liquid storage tank is sealed with a seal, the adjusting bolt is rotated, the plunger is tightened and moved to pressurize the liquid plastic, the liquid plastic squeezes the elastic bushing, so that the elastic bushing is deformed to squeeze the part to be turned, and it is firmly fixed on the base, the pressure of the liquid plastic on the part to be turned is equal everywhere, and no single point pressure is excessive to damage it, and the direction of the pressure of the liquid plastic on the part to be turned is to tighten it from the inside to the outside, and the part to be turned will not be damaged.

[0013] Based on the above technical solution, the present invention can also be improved as follows.

[0014] Furthermore, a plurality of first threaded holes are formed on the side wall of the base along its radial direction, a plurality of fixing holes are formed on the elastic bushing corresponding to the plurality of first threaded holes, and the elastic bushing is fixed to the base by a plurality of first screws.

[0015] The beneficial effect of adopting the above further solution is: improving the fixing effect and sealing effect of the elastic bushing.

[0016] Furthermore, it also includes a plurality of fixing bolts. A plurality of second threaded holes are opened at the bottom of the base. The plurality of fixing bolts pass through the connecting holes on the flange to fix the base on the flange.

[0017] The beneficial effect of adopting the above further solution is that the base is fixed to the flange by a plurality of fixing bolts, and installation is convenient.

[0018] Furthermore, the sealing member comprises a sealing bolt and a sealing gasket, the liquid storage tank is cylindrical and the inner wall of its notch is provided with threads, the sealing gasket is sleeved on the sealing bolt, and the sealing bolt is threadedly connected to the liquid storage tank to seal its notch.

[0019] The beneficial effect of adopting the above further solution is that the sealing bolt is screwed into the notch of the liquid storage tank, and the sealing gasket improves the sealing effect.

[0020] Furthermore, it also includes a plurality of clamping assemblies, wherein the fixed ends of the plurality of clamping assemblies are circumferentially fixed on the base, and the clamping ends of the clamping assemblies are used to axially fix the workpiece to be turned on the base.

[0021] Further, the clamping assembly comprises:

[0022] A fixed slot body, wherein a plurality of mounting holes arranged at intervals in the circumferential direction are provided on the annular plate, a plurality of the fixed slot bodies are correspondingly penetrated and fixed in the plurality of the mounting holes, and a through hole is provided at the bottom center of the fixed slot body;

[0023] A fixing screw, the lower end of which is fixed in the through hole;

[0024] A pressing member, the pressing member comprises a sliding column and a pressing plate, the sliding column is slidably connected in the groove cavity of the fixed groove body from the open end thereof; the sliding column is provided with a through hole along its axial direction, the fixed screw is slidably connected in the through hole, an annular stopper plate protrudes radially from the inner wall of the through hole, and the pressing plate is fixed to the side wall of the sliding column;

[0025] An adjusting nut is threadedly connected to the upper end of the fixing screw and abuts against the annular limiting plate.

[0026] The beneficial effect of adopting the above-mentioned further scheme is: the adjusting nut is a hexagonal nut, the adjusting nut is threadedly connected to the fixed screw, and the adjusting nut is rotated, the adjusting nut moves along the fixed screw, the adjusting nut squeezes the annular limit plate, and the annular limit plate drives the sliding column to slide in the groove cavity of the fixed groove body, so that the pressure plate is pressed tightly on the part to be turned and fixed to the base.

[0027] Furthermore, it also includes a compression spring, which is sleeved on the fixing screw, and one end of the compression spring abuts against the bottom of the fixing groove body, and the other end abuts against a side of the annular limiting plate away from the adjusting nut.

[0028] The beneficial effect of adopting the above further scheme is: under the action of the compression spring, when the part to be turned needs to be removed, the adjusting nut is reversed, and under the action of the compression spring, the sliding column is lifted up, which facilitates the removal of the part to be turned.

[0029] Furthermore, a third threaded hole is formed at the bottom of the fixing groove body, and a second screw is threadedly connected to the third threaded hole and a nut end thereof is pressed against the lower end of the fixing screw rod.

[0030] Furthermore, an annular step is formed on the inner wall of the mounting hole, and an annular abutment plate is extended from the outer wall of the fixing groove body corresponding to the annular step.

[0031] The beneficial effect of adopting the above further solution is that the annular abutment plate is fixed in the annular step accordingly, thereby improving the stability of the fixed groove body.

[0032] Furthermore, a pin hole is formed on the annular abutment plate, a blind hole is formed on the annular step corresponding to the pin hole, and a pin shaft passes through the pin hole and the blind hole correspondingly to prevent the fixed slot body from rotating. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A cross-sectional view of a fixed tooling for turning thin-walled parts of the present invention when in operation;

[0034] Figure 2 It is a left side view of a fixed tooling for thin-walled parts turning processing of the present invention when it is working;

[0035] Figure 3 This is a schematic structural diagram of a base in a fixed tooling for turning thin-walled parts according to the present invention;

[0036] Figure 4 for Figure 1 A magnified view of part A;

[0037] Figure 5 for Figure 1 A magnified view of part B;

[0038] Figure 6 for Figure 1 Enlarged view of part C;

[0039] Figure 7 for Figure 1 A magnified view of part D in the middle;

[0040] Figure 8 The figure is a schematic diagram of the structure of a clamping part in a fixed tooling for turning thin-walled parts.

[0041] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0042] 1-base, 101-positioning hole, 102-annular plate, 1021-mounting hole, 103-liquid storage tank, 104-through hole, 105-assembly hole, 2-threaded bushing, 3-elastic bushing, 4-pressure adjustment assembly, 41-plunger, 42-adjusting bolt, 5-seal, 51-sealing bolt, 52-sealing gasket, 6-first screw, 7-fixing bolt, 8-clamping assembly, 81-fixing trough, 82-fixing screw, 83-pressing member, 831-sliding column, 8311-through hole, 8312-annular limit plate, 832-pressure plate, 84-adjusting nut, 85-compression spring, 9-second screw, 10-annular step, 11-annular abutment plate, 12-pin shaft, 13-parts to be turned. DETAILED DESCRIPTION

[0043] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0044] The purpose of the present invention is to provide a fixing tool for turning thin-walled parts to solve the problems existing in the prior art, improve the effect of workpiece fixing, reduce turning vibration, and improve processing quality.

[0045] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0046] The present invention provides a fixed tool for turning thin-walled parts, which is connected to a machine tool through a flange. Figures 1 to 8 As shown, it comprises: a cylindrical base 1, a plurality of threaded bushings 2, an elastic bushing 3, a pressure regulating assembly 4 and a plurality of sealing members 5, a positioning hole 101 penetrating through the upper and lower ends is opened in the axial center of the base 1, a plurality of liquid storage tanks 103 are arranged at intervals on the lower end surface of the side wall of the base 1 in the circumferential direction, an annular plate 102 of a preset thickness is radially extended outward from the lower end side wall of the base 1, and a through hole 104 communicating with the liquid storage tank 103 is arranged on the outer wall of the base 1 corresponding to the position above the annular plate 102 and the liquid storage tank 103; the annular plate 10 2 is provided with an assembly hole 105 communicating with the liquid storage tank 103 along its radial direction; a plurality of threaded bushings 2 are fixed on the inner wall of the assembly hole 105 correspondingly; an elastic bushing 3 is sleeved on the side wall of the base 1 and can seal a plurality of through holes 104; a pressure regulating assembly 4 includes a plunger 41 and an adjusting bolt 42, and the plunger 41 is slidably sealed and connected in the assembly hole 105; the adjusting bolt 42 is threadedly connected to the threaded bushing 2 from its outer end and abuts against the plunger 41; a plurality of sealing members 5 seal the notches of the plurality of liquid storage tanks 103 one by one.

[0047] The fixed tooling for thin-walled parts turning provided by the present invention aligns the positioning hole 101 with the center hole of the flange and installs it on the flange, and the elastic bushing 3 is sleeved on the base 1 with an interference fit. The elastic bushing 3 seals multiple through holes 104, and the part to be turned 13 is sleeved on the elastic bushing 3. The plunger 41 is slidably sealed in the assembly hole 105, and liquid plastic is injected into the liquid storage tank 103. The notch of the liquid storage tank 103 is sealed with a seal 5, and the adjusting bolt 42 is rotated to tighten the plunger 41 and move it to pressurize the liquid plastic. The liquid plastic squeezes the elastic bushing 3, so that the elastic bushing 3 is deformed to squeeze the part to be turned 13, and it is firmly fixed on the base 1. The pressure of the liquid plastic on the part to be turned 13 is equal everywhere, and no single point pressure is excessive to damage it. In addition, the direction of the pressure of the liquid plastic on the part to be turned 13 is to tighten it from the inside to the outside, and the part to be turned 13 will not be damaged.

[0048] In a specific embodiment of the present invention, a plurality of first threaded holes are opened on the side wall of the base 1 along its radial direction, a plurality of fixing holes are opened on the elastic bushing 3 corresponding to the plurality of first threaded holes, and the elastic bushing 3 is fixed to the base 1 by a plurality of first screws 6 .

[0049] The fixing effect and sealing effect of the elastic bushing 3 are improved.

[0050] In a specific embodiment of the present invention, a plurality of fixing bolts 7 are further included. A plurality of second threaded holes are formed at the bottom of the base 1. The plurality of fixing bolts 7 pass through the connection holes on the flange to fix the base 1 on the flange.

[0051] The base 1 is fixed on the flange by a plurality of fixing bolts 7, and is easy to install.

[0052] In a specific embodiment of the present invention, the sealing member 5 includes a sealing bolt 51 and a sealing gasket 52. The liquid storage tank 103 is cylindrical and has a threaded inner wall of its notch. The sealing gasket 52 is sleeved on the sealing bolt 51. The sealing bolt 51 is threadedly connected to the liquid storage tank 103 to seal its notch.

[0053] The sealing bolt 51 is screwed into the notch of the liquid storage tank 103, and the sealing gasket 52 improves the sealing effect.

[0054] In a specific embodiment of the present invention, a plurality of clamping assemblies 8 are further included. The fixed ends of the plurality of clamping assemblies 8 are circumferentially fixed on the base 1 . The clamping ends of the clamping assemblies 8 are used to axially fix the workpiece 13 to be turned on the base 1 .

[0055] In a specific embodiment of the present invention, the clamping assembly 8 includes: a fixed groove body 81, a fixed screw 82, a clamping piece 83 and an adjusting nut 84. A plurality of mounting holes 1021 arranged at intervals in the circumferential direction are provided on the annular plate 102. A plurality of fixed groove bodies 81 are correspondingly penetrated and fixed in the plurality of mounting holes 1021. A through hole is provided at the bottom center of the fixed groove body 81. The lower end of the fixed screw 82 is fixed in the through hole. The clamping piece 83 includes a sliding column 831 and a pressing plate 832. The sliding column 831 is slidably connected in its groove cavity from the open end of the fixed groove body 81. The sliding column 831 is provided with a through hole 8311 along its axial direction. The fixed screw 82 is slidably connected in the through hole 8311. An annular limiting plate 8312 protrudes from the inner wall of the through hole 8311 along its radial direction. The pressing plate 832 is fixed to the side wall of the sliding column 831. The adjusting nut 84 is screwed to the upper end of the fixed screw 82 and abuts against the annular limiting plate 8312.

[0056] The adjusting nut 84 is a hexagonal nut, which is threadedly connected to the fixed screw 82. When the adjusting nut 84 is rotated, the adjusting nut 84 moves along the fixed screw 82, and the adjusting nut 84 squeezes the annular limit plate 8312. The annular limit plate 8312 drives the sliding column 831 to slide in the groove cavity of the fixed groove body 81, so that the pressure plate 832 is pressed tightly on the part to be turned 13 to fix it on the base 1.

[0057] In a specific embodiment of the present invention, a compression spring 85 is further included. The compression spring 85 is sleeved on the fixing screw 82, and one end of the compression spring 85 abuts against the bottom of the fixing groove 81, and the other end abuts against the side of the annular limiting plate 8312 away from the adjusting nut 84.

[0058] Under the action of the compression spring 85 , when the workpiece 13 to be turned needs to be removed, the adjusting nut 84 is reversed, and under the action of the compression spring 85 , the sliding column 831 is lifted up, so that the workpiece 13 to be turned is easily removed.

[0059] In a specific embodiment of the present invention, a third threaded hole is formed at the bottom of the fixing groove 81 , and the second screw 9 is screwed into the third threaded hole and the nut end thereof is pressed against the lower end of the fixing screw 82 .

[0060] In a specific embodiment of the present invention, an annular step 10 is formed on the inner wall of the mounting hole 1021 , and an annular abutting plate 11 extends from the outer wall of the fixing groove body 81 corresponding to the annular step 10 .

[0061] The annular abutment plate 11 is correspondingly fixed in the annular step 10 to improve the stability of the fixed groove body 81 .

[0062] In a specific embodiment of the present invention, a pin hole is formed on the annular abutment plate 11 , a blind hole is formed on the annular step 10 corresponding to the pin hole, and the pin shaft 12 passes through the pin hole and the blind hole correspondingly to prevent the fixed slot body 81 from rotating.

[0063] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A fixed fixture for turning thin-walled parts, connected to a machine tool through a flange, characterized in that: include: A cylindrical base (1), wherein a positioning hole (101) penetrating the upper and lower ends is provided at the axial center of the base (1), a plurality of liquid storage tanks (103) are arranged at intervals in the circumferential direction on the lower end surface of the side wall of the base (1), an annular plate (102) of a preset thickness is radially extended outward from the lower end side wall of the base (1), and a through hole (104) communicating with the liquid storage tank (103) is provided on the outer side wall of the base corresponding to the position above the annular plate (102) and the liquid storage tank (103); and an assembly hole (105) communicating with the liquid storage tank (103) is provided in the annular plate (102) along its radial direction; A plurality of threaded bushings (2), wherein the plurality of threaded bushings (2) are correspondingly fixed on the inner wall of the assembly hole (105); An elastic bushing (3), the elastic bushing (3) being sleeved on the side wall of the base (1) and capable of sealing the plurality of through holes (104); A pressure regulating assembly (4), the pressure regulating assembly (4) comprising a plunger (41) and an adjusting bolt (42), the plunger (41) being slidably and sealingly connected in the assembly hole (105); the adjusting bolt (42) being threadedly connected to the threaded bushing (2) from the outer end thereof and abutting against the plunger (41); A plurality of sealing members (5), wherein the plurality of sealing members (5) seal the notches of the plurality of liquid storage tanks (103) in a one-to-one correspondence.

2. A fixing fixture for turning thin-walled parts according to claim 1, characterized in that: A plurality of first threaded holes are provided on the side wall of the base (1) along its radial direction, a plurality of fixing holes are provided on the elastic bushing (3) corresponding to the plurality of first threaded holes, and the elastic bushing (3) is fixed to the base (1) by means of a plurality of first screws (6).

3. A fixing fixture for turning thin-walled parts according to claim 1, characterized in that: It also includes a plurality of fixing bolts (7), a plurality of second threaded holes are provided at the bottom of the base (1), and the plurality of fixing bolts (7) pass through the connection holes on the flange to fix the base (1) on the flange.

4. A fixing fixture for turning thin-walled parts according to claim 1, characterized in that: The sealing member (5) comprises a sealing bolt (51) and a sealing gasket (52); the liquid storage tank (103) is cylindrical and has a notch inner wall provided with a thread; the sealing gasket (52) is sleeved on the sealing bolt (51); the sealing bolt (51) is threadedly connected to the liquid storage tank (103) to seal the notch.

5. A fixture for turning thin-walled parts according to any one of claims 1 to 4, characterized in that: It also comprises a plurality of clamping assemblies (8), the fixed ends of the plurality of clamping assemblies (8) being fixed on the base (1) along the circumferential direction, and the clamping ends of the clamping assemblies (8) being used to axially fix the workpiece (13) to be turned on the base (1).

6. A fixing fixture for turning thin-walled parts according to claim 5, characterized in that: The clamping assembly (8) comprises: A fixed groove body (81), the annular plate (102) is provided with a plurality of mounting holes (1021) arranged at intervals in the circumferential direction, a plurality of the fixed groove bodies (81) are correspondingly penetrated and fixed in the plurality of mounting holes (1021), and a through hole is provided at the center of the bottom of the fixed groove body (81); a fixing screw (82), the lower end of the fixing screw (82) being fixed in the through hole; A clamping member (83), the clamping member (83) comprising a sliding column (831) and a pressing plate (832), the sliding column (831) being slidably connected in the groove cavity of the fixed groove body (81) from the open end thereof; the sliding column (831) being provided with a through hole (8311) along its axial direction, the fixed screw (82) being slidably connected in the through hole (8311), an annular limiting plate (8312) protruding from the inner wall of the through hole (8311) along its radial direction, and the pressing plate (832) being fixed to the side wall of the sliding column (831); An adjusting nut (84), wherein the adjusting nut (84) is threadedly connected to the upper end of the fixing screw (82) and abuts against the annular limiting plate (8312).

7. A fixing fixture for turning thin-walled parts according to claim 6, characterized in that: It also includes a compression spring (85), which is sleeved on the fixing screw (82), and one end of which abuts against the bottom of the fixing groove (81), and the other end abuts against the side of the annular limiting plate (8312) away from the adjusting nut (84).

8. A fixing fixture for turning thin-walled parts according to claim 6, characterized in that: A third threaded hole is provided at the bottom of the fixing groove body (81), and a second screw (9) is screwed into the third threaded hole and a nut end of the second screw (9) is pressed against the lower end of the fixing screw rod (82).

9. A fixing fixture for turning thin-walled parts according to claim 6, characterized in that: An annular step (10) is provided on the inner wall of the mounting hole (1021), and an annular abutment plate (11) is extended from the outer wall of the fixing groove body (81) corresponding to the annular step (10).

10. A fixing fixture for turning thin-walled parts according to claim 9, characterized in that: The annular abutment plate (11) is provided with a pin hole, the annular step (10) is provided with a blind hole corresponding to the pin hole, and the pin shaft (12) passes through the pin hole and the blind hole correspondingly to prevent the fixed slot body (81) from rotating.

Images