A complex profile thin-walled splash plate clamp, clamping method and machining method

Abstract

The application discloses a complex contour thin-wall splash baffle plate clamp, a clamping method and a machining method, and belongs to the field of machining manufacturing, and comprises a forward clamping tool and a reverse clamping tool; the splash baffle plate is installed on the forward clamping tool to be positioned in forward clamping, and the splash baffle plate is installed on the reverse clamping tool to be positioned in reverse clamping. The application is used for solving the problem that parts are prone to deformation during machining in the prior art and the problem that the outer circle size tolerance cannot be guaranteed, two special tools are designed for machining of a small end surface and an outer circle of the splash baffle plate, and a specific machining positioning method, a residual amount removing frequency and removing amount and a process route are provided in combination with the tools.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of machining manufacturing, in particular to a complex profile thin-wall splash baffle plate clamp, clamping method and machining method. BACKGROUND

[0002] The splash baffle plate is a casting with DD6 material, the inner hole axis of the part and the engine axis have an angle of 5°46', and the part requires machining the outer circle size tolerance within 0.07mm. According to the design structure and the raw material state of the part, the raw material large inner end face and the inner hole face can only be positioned during machining, and it is placed at 5°46'. The splash baffle plate belongs to a thin-wall part (the part profile wall thickness is 2mm), and the large end sector conical surface profile is complex, and it needs to be positioned by the cast inner hole and the sector inner conical surface. During machining, the part is easy to deform, and the outer circle deformation is irregularly changed due to the influence of the sector inner conical surface profile, and it is difficult to ensure the outer circle size tolerance of the part. SUMMARY

[0003] In order to solve the problems in the prior art, the present application provides a complex profile thin-wall splash baffle plate clamp, clamping method and machining method, which is used to solve the problem that the part is easy to deform during machining in the prior art and cannot guarantee the outer circle size tolerance. Two special toolings are designed for the small end face and the outer circle of the splash baffle plate, and a specific machining positioning method, residual amount removal times and removal amount, and process route are provided in combination with the toolings.

[0004] In order to achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0005] A complex profile thin-wall splash baffle plate clamp, comprising a forward clamping tooling and a reverse clamping tooling;

[0006] The forward clamping tooling comprises a base;

[0007] A positioning seat is arranged at the center position of the base, and inclined blocks are arranged on both sides of the positioning seat;

[0008] The inclined blocks and the positioning seat are provided with inclined surfaces opposite to each other; a pressing plate is arranged between the inclined blocks and the positioning seat, and the both ends of the pressing plate are provided with inclined surfaces matched with the inclined surfaces of the inclined blocks and the positioning seat; an equal-length double-end stud is installed in the center through hole of the pressing plate, the equal-length double-end stud is connected to the base through the pressing plate, and a star-shaped handle is arranged at the top of the equal-length double-end stud; the equal-length double-end stud is rotated to drive the pressing plate to press the splash baffle plate axially;

[0009] A spring collet is installed at the top of the positioning seat, and the spring collet is used to contact the inner hole of the splash baffle plate; a taper block is installed on the spring collet; a core shaft is arranged at the center of the positioning seat and the taper block, and a first nut is arranged at the top of the core shaft; the first nut, the taper block, the core shaft and the spring collet are used for radial positioning of the splash baffle plate;

[0010] The two sides of the positioning seat are provided with guide blocks, the center of the guide block is provided with a groove, an angular block is installed inside the groove, and the angular block is in sliding connection along the groove; the angular block is used for limiting the splash plate in the angular direction and providing angular limiting and pressing force;

[0011] The reverse clamping tool comprises a mounting seat, a pressing plate and a screw; the mounting seat is in the shape of a stepped shaft; the mounting seat is provided with a mounting seat end face and a mounting seat step face; the mounting seat end face reversely positions the small end face of the splash plate, and the mounting seat step face is used for contacting the inner hole of the splash plate; the screw passes through the pressing plate to connect the mounting seat, so that the splash plate is fixed.

[0012] Preferably, an elastic washer is arranged at the connecting part of the pressing plate and the splash plate.

[0013] Preferably, the guide block is fixed on the base through a second inner hexagonal screw, and a third cylindrical pin is used for positioning the guide block on the base.

[0014] Preferably, a cover plate is installed on the top of the guide block, and the cover plate is fixed above the groove of the guide block through a slotted countersunk screw.

[0015] Preferably, a supporting block is installed on the outer side of the guide block, the supporting block is fixed on the base, and a knurled round head pressing screw is arranged on the supporting block; the knurled round head pressing screw passes through the supporting block to connect the angular block, and rotating the knurled round head pressing screw drives the movement of the angular block.

[0016] Preferably, the positioning seat is fixed on the base through a first inner hexagonal cylindrical head screw, and a second cylindrical pin is used for positioning the positioning seat on the base.

[0017] The inclined block is fixed on the base through a second inner hexagonal cylindrical head screw, and a first cylindrical pin is used for positioning the inclined block on the base.

[0018] Preferably, the equal-length double-end stud is connected to the base through a second nut passing through the pressing plate, the top of the equal-length double-end stud is provided with a star-shaped handle, and the splash plate is axially pressed by rotating the star-shaped handle to drive the pressing plate to press downward.

[0019] Preferably, through holes are arranged on the positioning seat and the base, a screw plug is arranged at the bottom of the through hole, a pressure spring is arranged in the through hole of the positioning seat, a supporting pin is installed at the top of the pressure spring.

[0020] A forward clamping method of a complex profile thin-walled splash plate clamp, based on any one of the above-mentioned complex profile thin-walled splash plate clamps, comprises the following steps,

[0021] Step 1, place the splash plate on the positioning seat so that the conical surface of the splash plate is in contact with the surface of the positioning seat;

[0022] Step 2, the spring collet is arranged in the hole of the splash plate, the first nut is used, the taper block is tightened, the taper block is moved downward by rotating the nut arranged on the mandrel, so that the spring collet is expanded to position the hole surface of the elastic material, and the splash plate is positioned and clamped on the forward clamping tool;

[0023] Step 3, the two side angle blocks are pushed to be in contact with the two side surfaces of the splash plate, and the part is angularly positioned and angularly limited and pressed;

[0024] Step 4, the pressing plate is pressed downward to axially press the splash plate, the outer end surface of the splash plate is pressed, and the pressing plate provides the axial pressing force;

[0025] Step 5, the supporting pin is supported by adjusting the screw plug and the pressure spring, and the splash plate is in point contact with the conical surface, and the axial floating support positioning is carried out.

[0026] A machining method of a complex profile thin-wall splash plate clamp, based on the complex profile thin-wall splash plate clamp in any one of the preceding aspects, comprises the following steps,

[0027] Step 1, the splash plate is in contact with the profile of the forward clamping tool in the complex profile thin-wall splash plate clamp,

[0028] and the forward clamping positioning is carried out;

[0029] Step 2, the machining allowance removal times and removal amount of the splash plate are designed, the part is clamped forward, the end surface of the part is machined, and the outer circle of the part is machined;

[0030] Step 3, the flatness of the small end surface of the splash plate is machined;

[0031] Step 4, the splash plate is installed on the reverse clamping tool for reverse clamping positioning;

[0032] Step 5, the part is clamped reversely according to the reverse clamping positioning, the end surface is accurately positioned, and the final allowance of the splash plate part is removed.

[0033] Compared with the prior art, the present application has the following beneficial technical effects:

[0034] The present application provides a complex profile thin-walled splash plate clamp, through which the splash plate is clamped in the forward direction, the axial size required by the design is ensured, and reliable clamping and positioning of the complex profile thin-walled workpiece is realized, so that the deformation of the part after the workpiece is positioned and machined is small. Through reference conversion, the positioning of the workpiece fan-shaped conical surface is converted to the positioning of the machined small end surface when the outer circle is machined, so that the positioning reference is flat and reliable when the part is clamped in the reverse direction, and the machining precision of the part is ensured. Through the clamp, the splash plate is clamped in the reverse direction, the small end surface is positioned by the machine, and the part is pressed by the special profile pressing plate and the profile rubber gasket at the same time, so that the problem of unreliable positioning of the complex profile thin-walled workpiece is solved, and finally the size tolerance of the part is controlled within 0.07mm.

[0035] The present application uses the clamp to clamp the splash plate in the forward and reverse directions, uses the reference conversion method, cooperates with reasonable allowance removal times and removal amount, and designs a reasonable process route, so that the complex profile, workpiece positioning and high-precision machining of the thin-walled splash plate are finally realized. The clamp design, part clamping and positioning, positioning reference conversion, allowance distribution and process route design idea of the present application provide an example for other complex profile, workpiece positioning and thin-walled parts that need to be machined to high-precision size, and have very high engineering practical application value. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 is a forward clamping tool main view of a complex profile thin-walled splash plate clamp of the present application.

[0037] Figure 2 is a forward clamping tool main view A-A cross-sectional structure schematic view of a complex profile thin-walled splash plate clamp of the present application.

[0038] Figure 3 is a forward clamping tool main view B-B cross-sectional structure schematic view of a complex profile thin-walled splash plate clamp of the present application.

[0039] Figure 4 is a forward clamping tool main view B-B cross-sectional structure schematic view of a complex profile thin-walled splash plate clamp of the present application.

[0040] Figure 5 is a forward clamping tool main view B-B cross-sectional structure schematic view of a complex profile thin-walled splash plate clamp of the present application.

[0041] Figure 6 is a forward clamping tool main view B-B cross-sectional structure schematic view of a complex profile thin-walled splash plate clamp of the present application.

[0042] Figure 7 is a reverse clamping tool main view structure schematic view of a complex profile thin-walled splash plate clamp of the present application.

[0043] Figure 8 is a schematic diagram of the splash baffle according to the forward clamping tool forward clamping positioning and machining.

[0044] Figure 9 is a schematic diagram of the splash baffle according to the reverse clamping tool reverse clamping positioning and machining.

[0045] Figure 10 is a structural schematic diagram of the splash baffle axial view.

[0046] In the drawings: 1 is a base; 2 is a positioning seat; 3 is a positioning pin; 4 is a guide block; 5 is an angular block; 6 is a supporting block; 7 is a cover plate; 8 is a pressing plate; 9 is a pressing plate; 10 is an inclined block; 11 is a supporting pin; 12 is a spring chuck; 13 is a tapered block; 14 is a first nut; 15 is a mandrel; 16 is a first cylindrical pin; 17 is a second cylindrical pin; 18 is a third cylindrical pin; 19 is a screw plug; 20 is a star-shaped handle; 21 is a first inner hexagonal screw; 22 is a slotted countersunk screw; 23 is a slotted cylindrical head screw; 24 is a first inner hexagonal cylindrical head screw; 25 is a second inner hexagonal cylindrical head screw; 26 is a second nut; 27 is a second inner hexagonal screw; 28 is a knurled round head pressing screw; 29 is an equal-length double-headed stud; 30 is a pressure spring; 31 is a third inner hexagonal cylindrical head screw; 32 is an installation seat end face; 33 is an installation seat step face; 34 is a resilient washer; 35 is a pressing plate; 36 is a third nut; 37 is a screw. DETAILED DESCRIPTION

[0047] The present application will be further described in conjunction with specific examples, which are an explanation of the present application rather than a limitation.

[0048] EMBODIMENT

[0049] The complex profile thin-walled splash baffle clamp of the present application comprises a forward clamping tool and a reverse clamping tool; the splash baffle is installed on the forward clamping tool for forward clamping positioning, and the splash baffle is installed on the reverse clamping tool for reverse clamping positioning.

[0050] As shown in the drawings, the forward clamping tool comprises a base 1, a positioning seat 2, a positioning pin 3, a guide block 4, an angular block 5 Figures 1 to 6

[0051] a supporting block 6, a cover plate 7, a pressing plate 8, a pressing plate 9, an inclined block 10, a supporting pin 11, a spring chuck 12, a tapered block 13, a first nut 14, a mandrel 15, a first cylindrical pin 16, a second cylindrical pin 17, a third cylindrical pin 18, a screw plug 19, a star-shaped handle 20, a first inner hexagonal screw 21, a slotted countersunk screw 22, a slotted cylindrical head screw 23, a first inner hexagonal cylindrical head screw 24, a second inner hexagonal cylindrical head screw 25, a second nut 26, a second inner hexagonal screw 27, a knurled round head pressing screw 28, an equal-length double-headed stud 29, a pressure spring 30, and a third inner hexagonal cylindrical head screw 31.​

[0052] The base 1, the inclined block 10, the positioning seat 2, the guide block 4 and the angular block 5 constitute the main base of the clamp.

[0053] The center of the base 1 is provided with the positioning seat 2, and the two sides of the positioning seat 2 are provided with the inclined block 10.

[0054] The positioning seat 2 is fixed on the base 1 through the first inner hexagonal cylindrical head screw 24, and the second cylindrical pin 17 is used for positioning the positioning seat 2 on the base 1.

[0055] The inclined block 10 is fixed on the base 1 through the second inner hexagonal cylindrical head screw 25, and the first cylindrical pin 16 is used for positioning the inclined block 10 on the base 1.

[0056] The top of the positioning seat 2 is provided with the spring collet 12, which is used for contacting the inner hole of the splash plate; the spring collet 12 is provided with the taper block 13.

[0057] The center of the positioning seat 2 and the taper block 13 is provided with the mandrel 15, and the top of the mandrel 15 is provided with the first nut 14; the first nut 14, the taper block 13, the mandrel 15 and the spring collet 12 are used for the radial positioning of the splash plate.

[0058] The inclined block 10 and the positioning seat 2 are provided with opposite inclined surfaces; the inclined surfaces of the inclined block 10 and the positioning seat 2 are provided with the pressing plate 9, and the two ends of the pressing plate 9 are provided with inclined surfaces matched with the inclined surfaces of the inclined block 10 and the positioning seat 2; the center through hole of the pressing plate 9 is provided with the equal-length stud bolt 29, the equal-length stud bolt 29 is connected to the base 1 through the second nut 26 penetrating the pressing plate 9, and the top of the equal-length stud bolt 29 is provided with the star-shaped handle 20; the pressing plate 9, the star-shaped handle 20 and the equal-length stud bolt 29 are connected to the base and matched with the inclined block 10, and are used for providing the splash plate with a pressing force; the splash plate is axially pressed by rotating the star-shaped handle 20 to drive the pressing plate 9 to press down.

[0059] The pressing plate 9, the star-shaped handle 20 and the equal-length stud bolt 29 are connected to the base and matched with the inclined block, and are used for providing the splash plate with a pressing force.

[0060] The other two sides of the positioning seat 2 are provided with the guide block 4, the center of the guide block 4 is provided with a groove, the angular block 5 is installed inside the groove, and the angular block 5 is connected in sliding mode along the groove.

[0061] The guide block 4 is fixed on the base 1 through the second inner hexagonal screw 27, and the third cylindrical pin 18 is used for positioning the guide block 4 on the base 1.

[0062] The top of the guide block 4 is provided with the cover plate 7, and the cover plate 7 is fixed above the groove of the guide block 4 through the slotted countersunk screw 22.

[0063] The outer side of the guide block 4 is provided with a supporting block 6 fixed on the base 1, a knurled round head compression screw 28 passes through the supporting block 6 to connect the angular block 5, and rotating the knurled round head compression screw 28 drives the movement of the angular block 5. The angular block 5 and the knurled round head compression screw 28 can limit the splash plate angle and provide angular limiting and compression force.

[0064] The inclined surface of the positioning seat 2 is provided with a positioning pin 3; the positioning pin 3 is arranged between two supporting pins 11; the positioning seat 2 and the base 1 are provided with through holes, the bottom of the through hole is provided with a screw plug 19, the inside of the through hole of the positioning seat 2 is provided with a pressure spring 30, the inside of the through hole of the positioning seat 2 is provided with a pressure spring 30, the top of the pressure spring 30 is provided with a supporting pin 11, the side surface of the supporting pin 11 is provided with a groove, and the supporting pin 11 at one end of the positioning seat 2 is locked by abutting on the groove through the first internal hexagonal screw 21 passing through the positioning seat 2. The screw plug 19 and the pressure spring 30 can play a floating supporting role, and then the first internal hexagonal screw 21 is locked. The supporting pin 11 at one end of the positioning seat 2 is locked by abutting on the groove through the third internal hexagonal cylindrical head screw 31 passing through the positioning seat 2.

[0065] As shown in the figure, Figure 7 The reverse clamping tool includes a mounting seat, a mounting seat end surface 32, a mounting seat step surface 33, an elastic washer 34, a pressing plate 35, a nut 36 and a screw 37.

[0066] The mounting seat end surface 32, the mounting seat step surface 33, the elastic washer 34, the pressing plate 35, the nut 36 and the screw 37 are used for reverse clamping positioning of the splash plate.

[0067] The mounting seat is in the shape of a stepped shaft; the mounting seat is provided with a mounting seat end surface 32 and a mounting seat step surface 33.

[0068] The mounting seat end surface 32 is used for reverse positioning of the small end surface of the splash plate, the mounting seat step surface 33 is used for contacting the inner hole of the splash plate, the screw 37 passes through the pressing plate 35 to connect the mounting seat, and the splash plate is fixed; the nut 36 fixes the screw 37. The connecting part of the pressing plate 35 and the splash plate is provided with the elastic washer 34.

[0069] The elastic washer 34, the pressing plate 35 and the screw 37 are used for positioning the rear end surface of the splash plate, so as to realize axial positioning of the part; the mounting seat step surface 33 is used for positioning the inner hole of the part, so as to realize radial positioning of the part.

[0070] The present application provides a forward clamping tool and a reverse clamping tool for machining the small end surface and the outer circle of the splash plate, and provides a specific machining positioning method, a number of excess removal times and removal amounts, and a process route in combination with the tool.

[0071] As shown in the figure, Figures 8 to 10 The forward clamping method of the complex profile thin-walled splash plate clamp of the present application comprises the following steps:

[0072] Step 1, place the splash plate on the fixture positioning seat 2, so that the splash plate conical surface is in contact with the positioning seat surface

[0073] Step 2, place the spring collet in the splash plate inner hole, use nut 14 to manually tighten the taper block 13, rotate the nut on the mandrel to move the taper block down, so that the spring collet expands to the inner hole surface of the elastic positioning material, realizing the radial positioning and clamping of the splash plate on the tooling.

[0074] Step 3, by pushing the two side corner blocks 5, the two corner blocks are in contact with the two side surfaces of the splash plate, and the screws 28 are tightened, realizing the angular positioning and angular limiting compression of the part.

[0075] Step 4, by tightening the two star-shaped handle controls the two pressing plates, the large outer end surface of the splash plate is compressed to provide axial compression force.

[0076] Step 5, by adjusting the screw plug 19 and the pressure spring 30, the support pin is in point contact with the conical surface of the splash plate, and the internal hexagonal screw is locked to provide axial floating support positioning.

[0077] The processing method of the complex profile thin-walled splash plate clamp of the application comprises the following steps:

[0078] (1) The splash plate is positioned and clamped on the forward clamping tooling:

[0079] The positioning seat 2 of the splash plate and the forward clamping tooling is in contact, and because the axis of the positioning seat 2 and the axis of the base body have an angle of 5°46', the state of the splash plate during processing and assembly in the engine can be ensured to coincide, that is, the inner circular axis of the part and the axis of the engine have an angle of 5°46'.

[0080] The nut 14 is used to manually tighten the taper block 13, the nut on the mandrel is rotated to move the taper block down, so that the spring collet expands to the inner hole surface of the elastic positioning material, realizing the radial positioning and clamping of the splash plate on the tooling.

[0081] The knurled round head compression screw 28 is used to squeeze the two side corner blocks 5 for angular positioning and providing angular limiting compression force.

[0082] The two star-shaped handle controls the pressing plate to compress the large outer end surface of the splash plate, which provides axial compression force.

[0083] The screw plug 19 and the pressure spring 30 can be adjusted, and the internal hexagonal screw is locked to provide axial floating support positioning.

[0084] The conical block is moved down by rotating the nut of the mandrel, so that the spring collet expands to position the elastic positioning hair inside the hole surface, and the above process realizes the radial positioning and clamping of the splash plate on the tool.

[0085] (2) Design allowance removal times and removal amount:

[0086] The DD6 material belongs to a hard and difficult-to-machine material, the total allowance for machining to the final size and precision is 5.6-5.7mm, the design allowance removal times is 9 times and the removal amount of each single removal is 0.6mm. Through the above method, the cutting force generated in the machining process can be reduced, and the deformation amount of the splash plate in the free state can be controlled. According to step (1), the part is clamped, the end face of the part is machined, and the part is machined, and a 0.2-0.3mm allowance is reserved.

[0087] (3) Control the flatness of the end face of the splash plate:

[0088] The small end face of the splash plate is ground using a honing device, and the flatness is controlled within 0.01-0.02mm.

[0089] (4) Reverse clamping and positioning of the splash plate on the reverse clamping tool:

[0090] The small end face of the splash plate is reversely positioned using the end face of the mounting seat, and the rear end face of the splash plate is positioned using the elastic washer, the pressing plate and the bolt, so as to realize the axial positioning of the part; the inner hole of the part is positioned using the stepped surface, so as to realize the radial positioning of the part.

[0091] (5) Final allowance removal:

[0092] According to step (4), the part is reversely clamped and positioned, the end face is accurately positioned, and the final 0.2-0.3mm allowance of the part is removed. The size tolerance of the part is ensured to be within 0.07mm.

[0093] (6) Process route of the splash plate:

[0094] The material has complex contour characteristics, belongs to a splash plate of thin-walled parts, and the size precision of the end face is within 0.07mm. The machining process route is as follows: forward clamping and positioning → turning outer shape → deburring → honing end face → reverse clamping and positioning → turning outer circle → fluorescence detection → inspection → cleaning → storage.

[0095] In the present application, the splash plate is forward clamped by the forward clamping tool, the axial size required by the design is ensured, the reliable clamping and positioning of the complex contour thin-walled material part is realized, and the deformation amount of the part after being disassembled after being machined and positioned by the material is small.

[0096] In the present application, through reference conversion, the fan-shaped conical surface of the material is positioned by the machined small end face when turning the outer circle, the positioning reference is flat and reliable when the part is reversely clamped, and the machining precision of the part is ensured.

[0097] The reverse clamping tool of the application reversely clamps the splash baffle, positions by the small end face of machining, and presses the part by the special profile pressing plate and the profile rubber gasket, so as to solve the unreliable problem of the raw material positioning of the complex profile thin-walled part, and finally realize the control of the part size tolerance within 0.07 mm.

[0098] According to the structural features and size precision requirements of the splash baffle, the forward clamping tool and the reverse clamping tool are used to reversely clamp the splash baffle, the reference conversion method is used, the reasonable allowance removal times and removal amount are matched, and the reasonable process route is designed, so as to finally realize the machining of the complex profile, raw material positioning and high-precision size of the splash baffle of the thin-walled part.

[0099] The design of the clamp, the part clamping and positioning, the positioning reference conversion, the allowance distribution and the process route design idea of the application provide an example for the machining of high-precision size of other complex profile, raw material positioning and thin-walled parts, and have very high engineering practical application value.

Claims

1. A complex profile thin walled splash plate fixture, characterized by, The forward clamping tool and the reverse clamping tool are included; The forward clamping tool includes a base (1); A positioning seat (2) is arranged at the center of the base (1), and inclined blocks (10) are arranged on both sides of the positioning seat (2); The inclined blocks (10) and the positioning seat (2) are oppositely provided with inclined surfaces; a pressing plate (9) is arranged between the inclined blocks (10) and the positioning seat (2), both ends of the pressing plate (9) are provided with inclined surfaces matched with the inclined surfaces of the inclined blocks (10) and the positioning seat (2); an equal-length double-end stud (29) is arranged in a through hole at the center of the pressing plate (9), the equal-length double-end stud (29) penetrates through the pressing plate (9) and is connected to the base (1), and a star-shaped handle (20) is arranged at the top of the equal-length double-end stud (29); the equal-length double-end stud (29) is rotated to drive the pressing plate (9) to press the splash-proof disc axially. A spring collet (12) is arranged at the top of the positioning seat (2) and used to contact the inner hole of the splash-proof disc; a taper block (13) is arranged on the spring collet (12); a core shaft (15) is arranged at the center of the positioning seat (2) and the taper block (13), and a first nut (14) is arranged at the top of the core shaft (15); the first nut (14), the taper block (13), the core shaft (15) and the spring collet (12) are used for radial positioning of the splash-proof disc; Both sides of the positioning seat (2) are provided with guide blocks (4), the center of each guide block (4) is provided with a groove, an angular block (5) is arranged in the groove, and the angular block (5) is slidably connected along the groove; the angular block (5) is used for limiting the angular direction of the splash-proof disc and providing angular limiting and pressing force. The reverse clamping tool includes a mounting seat, a pressing plate (35) and a screw (37); the mounting seat is in the shape of a stepped shaft; the mounting seat is provided with a mounting seat end face (32) and a mounting seat step face (33); the mounting seat end face (32) reversely positions the small end face of the splash-proof disc, the mounting seat step face (33) is used for contacting the inner hole of the splash-proof disc, the screw (37) penetrates through the pressing plate (35) and is connected to the mounting seat, and the splash-proof disc is fixed.

2. A complex profile thin walled splash plate fixture according to claim 1, wherein, An elastic washer (34) is arranged at the connecting part of the pressing plate (35) and the splash-proof disc.

3. A complex profile thin walled splash plate fixture according to claim 1, wherein, The guide blocks (4) are fixed on the base (1) by second inner hexagonal screws (27), and third cylindrical pins (18) are used for positioning the guide blocks (4) on the base (1).

4. A complex profile thin walled splash plate fixture according to claim 1, wherein, A cover plate (7) is arranged at the top of each guide block (4) and fixed on the upper part of the groove of the guide block (4) by slotted countersunk screws (22).

5. A complex contour thin walled splash plate fixture according to claim 1 wherein, A supporting block (6) is arranged on the outer side of each guide block (4) and fixed on the base (1), the supporting block (6) is provided with knurled round head pressing screws (28), the knurled round head pressing screws (28) penetrate through the supporting block (6) and are connected to the angular blocks (5), and the knurled round head pressing screws (28) are rotated to drive the angular blocks (5) to move.

6. A complex contour thin walled splash plate fixture according to claim 1 wherein, The positioning seat (2) is fixed on the base (1) by first inner hexagonal cylindrical head screws (24), and second cylindrical pins (17) are used for positioning the positioning seat (2) on the base (1). The inclined block (10) is fixed on the base (1) by a second inner hexagonal cylindrical head screw (25), and the first cylindrical pin (16) positions the inclined block (10) on the base (1).

7. A complex contour thin walled splash plate fixture according to claim 1 wherein, The equal-length double-end stud (29) is connected to the base (1) through the second nut (26) penetrating the pressing plate (9), and the top of the equal-length double-end stud (29) is provided with a star-shaped handle (20), which drives the pressing plate (9) to be pressed downward by rotating the star-shaped handle (20) to axially press the splash-proof disc.

8. A complex contour thin walled splash plate fixture according to claim 1 wherein, The positioning seat (2) and the base (1) are provided with through holes, the bottom of the through hole is provided with a screw plug (19), the inside of the through hole of the positioning seat (2) is provided with a pressure spring (30), the inside of the through hole of the positioning seat (2) is provided with a pressure spring (30), and the top of the pressure spring (30) is provided with a supporting pin (11).

9. A method of forward clamping of a complex profile thin walled splash plate fixture, characterized by, The complex contour thin-walled splash-proof disc clamp according to claim 8, Comprising the following steps, Step 1, place the splash-proof disc on the positioning seat (2), and make the splash-proof disc conical surface fit with the positioning seat (2) surface; Step 2, place the spring collet (12) in the splash-proof disc inner hole, use the first nut (14), tighten the taper block (13), rotate the nut of the mandrel (15) to make the taper block (13) move downward, so that the spring collet (12) expands to position the inner hole surface of the elastic material, and the splash-proof disc is radially positioned and clamped on the forward clamping tool; Step 3, push the two side angle blocks (5) to make the two side angle blocks (5) fit with the two side surfaces of the splash-proof disc, and the part is angularly positioned and angularly limited and pressed; Step 4, press the splash-proof disc axially by pressing the pressing plate (9), and press the large outer end surface of the splash-proof disc, and the pressing plate (9) provides axial pressing force; Step 5, adjust the screw plug (19) and the pressure spring (30) to make the supporting pin (11) contact with the splash-proof disc conical surface in a point contact mode, and axially floatingly support and position.

10. A method of machining a complex profile thin walled splash plate fixture, characterized by, The complex contour thin-walled splash-proof disc clamp according to any one of claims 1 to 8, Comprising the following steps, Step 1, make the splash-proof disc fit with the surface of the forward clamping tool in the complex contour thin-walled splash-proof disc clamp, and position the splash-proof disc forwardly; Step 2, design the number of times and the amount of removal of the splash-proof disc machining allowance, and process the end surface and the outer circle of the part according to the forwardly clamped part; Step 3, process the flatness of the small end surface of the splash-proof disc; Step 4, install the splash-proof disc on the reverse clamping tool for reverse clamping positioning; Step 5, remove the final allowance of the splash-proof disc part according to the reverse clamping positioning part by using the accurate positioning of the end surface.

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