Fixtures and five-axis machining centers

Abstract

The present invention discloses a clamp and a five-axis machining machine, which relate to the technical field of numerical control machining equipment. The clamp has a first clamping part and a second clamping part. The first clamping part is used to abut against one side of a blade, and the second clamping part is pressed against the other side of the blade under the locking action of a first fastener, thereby clamping the blade. When the clamping position of the blade needs to be adjusted, the first fastener is first loosened, and the first adjusting member is rotated to drive the pusher to slide on the guide slope, thereby driving the support seat to slide toward the blade, and the first clamping part and the blade are abutted and transmitted to adjust the clamping position of the blade between the first clamping part and the second clamping part, so that the center of the blade can be close to the central axis of the turntable. Therefore, the clamp of the present invention is conducive to improving the centering efficiency and centering accuracy of the blade.

Description

Technical Field

[0001] The invention relates to the technical field of numerical control processing equipment, and in particular to a clamp and a five-axis processing machine tool. Background Art

[0002] As a high-precision processing equipment, the five-axis machining center is suitable for machining complex curved surfaces of blades and other parts to meet the needs of production processes. Among them, the blade is generally rough-machined into a shape with a T-shaped root. The T-shaped root used for clamping generally does not have a center hole, so it is impossible to quickly calibrate the rotation center of the blade to coincide with the rotation center of the five-axis machining.

[0003] The five-axis machining center generally includes a turntable and a spindle. The turntable is equipped with a special fixture, which clamps the T-shaped root of the blade so that the blade can rotate with the turntable to match the spindle's processing of the blade. Therefore, before processing, it is necessary to adjust the clamping position of the T-shaped root of the blade in the special fixture to ensure that the center of the blade falls on the central axis of the turntable as much as possible, avoid eccentric rotation of the blade, and thus ensure the processing accuracy of the blade.

[0004] In the related art, the clamp for clamping the blade includes a base and a holding assembly. The base is used to support one side of the blade upward. The holding assembly includes a pressing plate and a screw assembly. One end of the screw assembly is threadedly connected to the base in the vertical direction, and the other end is connected to the pressing plate. By screwing the screw assembly downward, the pressing plate is pressed against the other side of the blade away from the base to achieve locking and clamping of the blade. After that, the blade is aligned by rotating the turntable and measuring. When it is detected that the center of the blade is lower than the central axis of the turntable, it is necessary to loosen the screw assembly and lift the blade as a whole to the base, and then insert a gasket between the base and the blade so that the center of the blade is close to the central axis of the turntable.

[0005] However, when adjusting the clamping position of the blade, this clamp needs to repeatedly insert shims to make height adjustments, and the thickness and size of the shims are different, so the clamping efficiency and clamping accuracy of the blade are low, which in turn leads to low centering efficiency and centering accuracy of the blade. Summary of the invention

[0006] The main purpose of the present invention is to provide a clamp, aiming to improve the clamping efficiency and clamping accuracy of the blade, and then improve the centering efficiency and centering accuracy of the blade.

[0007] To achieve the above-mentioned purpose, the clamp proposed in the present invention is applied to the turntable of a five-axis machining center, and comprises a base, a support base, a transmission assembly and a pressing assembly. The base is used to be installed on the turntable, a threaded hole is provided on the side of the base away from the turntable, and a first mounting hole is also provided on the side wall of the base; the support base is slidably connected to the base perpendicular to the axial direction of the turntable, and a first clamping portion is convexly provided on the side of the support base away from the base, and the first clamping portion is used to abut against one side of the blade;

[0008] The transmission assembly includes a resisting member, a pushing member and a first adjusting member, wherein the resisting member is arranged on a side of the first clamping portion away from the blade, and a guiding inclined surface is arranged on a side of the resisting member facing the support seat, and the pushing member is arranged between the resisting member and the support seat, and slides against the guiding inclined surface in a direction approaching or away from the support seat, and the pushing member is penetrated by a first adjusting hole connected with the threaded hole, and the first adjusting member is penetrated by the first adjusting hole and is threadedly connected to the threaded hole, and the pushing member is driven to slide and press the support seat by rotating the first adjusting member, so as to drive the support seat to slide toward the blade;

[0009] The pressing assembly includes a pressing member and a first fastener, the pressing member is provided with a first connecting hole on a side facing the first mounting hole, and is provided with a second clamping portion protruding on a side facing the first clamping portion, the first fastener passes through the first connecting hole and is threadedly connected to the first mounting hole, so that the second clamping portion is pressed against the other side of the blade away from the first clamping portion.

[0010] In one embodiment, a first fixing groove is recessed on a side wall of the base away from the holding member, and the first mounting hole is formed on a bottom wall of the first fixing groove. The first fixing groove is used to mount the holding member.

[0011] In one embodiment, the first fixing groove extends obliquely to the axial direction of the turntable, the pressing member is arranged obliquely to the axial direction of the turntable, and the pressing assembly also includes an elastic member, one end of the elastic member abuts against the bottom wall of the first mounting hole, and the other end is connected to the pressing member to drive the second clamping portion to move in a direction away from the blade.

[0012] In one embodiment, the clamp further includes a positioning component, which is disposed on a side of the support seat away from the base and is used to limit the blade perpendicular to the clamping direction.

[0013] In one embodiment, a positioning hole is formed on the side of the support seat facing away from the base and is spaced apart from the first clamping portion. The positioning assembly includes a limit member and a second adjusting member. A second adjusting hole is formed on one side of the limit member. The second adjusting member is passed through the second adjusting hole and is threadedly connected to the positioning hole to adjust the position of the limit member perpendicular to the clamping direction.

[0014] In one embodiment, a dovetail groove is recessed on a side of the base facing away from the turntable, and the dovetail groove is gradually expanding along the groove diameter from the opening to the bottom wall. A limiting portion with a gradually expanding outer diameter is convexly provided on one side of the support seat, and the limiting portion is slidably inserted in the dovetail groove so that the support seat is limited to the groove wall of the dovetail groove along the groove depth direction of the dovetail groove.

[0015] In one embodiment, a groove wall of the dovetail groove is openly provided with an installation opening perpendicular to the axial direction of the turntable, and the limiting portion slides in and out of the installation opening, so that the support seat can be detachably arranged.

[0016] In one embodiment, a second fixing groove is recessed on the side wall of the base facing away from the first mounting hole, a second mounting hole is opened on the bottom wall of the second fixing groove, a second connecting hole is penetrated on one side of the supporting member, and a second fastener is sequentially penetrated through the second connecting hole and the second mounting hole to connect the supporting member to the bottom wall of the second fixing groove.

[0017] In one embodiment, a plurality of third mounting holes spaced circumferentially are provided on the axial side of the turntable, a plurality of third connecting holes spaced apart are provided on the base, and a third fastener is sequentially passed through and connected to the third connecting hole and the third mounting hole to connect the base to the turntable.

[0018] The present invention also provides a five-axis machining center, which includes a turntable and the fixture as described above, wherein the turntable is rotatable along its own axis direction; and the base is installed on the turntable to rotate with the turntable.

[0019] In the technical solution of the present invention, the clamp has a first clamping part and a second clamping part, the first clamping part is used to abut against one side of the blade, and the second clamping part is pressed against the other side of the blade under the locking action of the first fastener, so as to clamp the blade. When the clamping position of the blade needs to be adjusted, the first fastener is first loosened, and the first adjusting member is rotated to drive the pusher to slide on the guide slope, thereby driving the support seat to slide toward the blade, and the first clamping part and the blade are abutted to drive, so as to adjust the clamping position of the blade between the first clamping part and the second clamping part, so that the center of the blade can be close to the central axis of the turntable.

[0020] Therefore, the clamp of the present invention does not need to insert a gasket when adjusting the clamping position of the blade, but can achieve active adjustment by rotating the first adjusting member, which is beneficial to improving the clamping efficiency and clamping accuracy of the blade, and then beneficial to improving the centering efficiency and centering accuracy of the blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0022] Figure 1 A schematic structural diagram of an embodiment of a clamp provided by the present invention in a loosened state;

[0023] Figure 2 for Figure 1 A schematic diagram of the structure of the middle clamp in a clamped state;

[0024] Figure 3 for Figure 2 Schematic diagram of the exploded structure of the fixture shown;

[0025] Figure 4 for Figure 2 A schematic diagram of the matching structure of the middle base, the pushing member and the abutting member;

[0026] Figure 5 for Figure 2 Schematic diagram of the matching structure of the middle base, the support base and the positioning assembly;

[0027] Figure 6 for Figure 2 Schematic diagram of the structure of the middle base;

[0028] Figure 7 for Figure 2 Schematic diagram of the structure of the medium pressure holder.

[0029] Description of the accompanying drawings: 10, clamp; 1, base; 11, third connecting hole; 13, dovetail groove; 131, opening; 133, mounting opening; 135, threaded hole; 15, first fixing groove; 151, first mounting hole; 17, second fixing groove; 171, second mounting hole; 18, third fastener; 3, support seat; 31, first clamping part; 33, positioning hole; 35, clamping groove; 37, limit part; 4, transmission assembly; 41. Abutting member; 411. Guide slope; 413. Second fastener; 43. Pushing member; 431. First adjustment hole; 45. First adjustment member; 5. Pressing assembly; 51. Pressing member; 511. Second clamping portion; 513. First connecting hole; 53. First fastener; 55. Elastic member; 7. Positioning assembly; 71. Limiting member; 711. Second adjustment hole; 73. Second adjustment member; 9. Blade; 91. T-shaped blade root.

[0030] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0033] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0034] As a high-precision processing equipment, the five-axis machining center is suitable for machining complex curved surfaces of blades and other parts to meet the needs of production processes. Among them, the blade is generally rough-machined into a T-shaped blade root shape, and the T-shaped blade root is generally not provided with a center hole for clamping, so it is impossible to accurately and quickly calibrate the rotation center of the blade to coincide with the rotation center of the five-axis machining.

[0035] The five-axis machining center generally includes a turntable and a spindle. The turntable is equipped with a special fixture, which clamps the T-shaped root of the blade so that the blade can rotate with the turntable to match the spindle's processing of the blade. Therefore, before processing, it is necessary to adjust the clamping position of the T-shaped root of the blade in the special fixture to ensure that the center of the blade falls on the central axis of the turntable as much as possible, avoid eccentric rotation of the blade, and thus ensure the processing accuracy of the blade.

[0036] In the related art, the clamp for clamping the blade includes a base and a holding assembly. The base is used to support one side of the blade upward. The holding assembly includes a pressing plate and a screw assembly. One end of the screw assembly is threadedly connected to the base in the vertical direction, and the other end is connected to the pressing plate. By screwing the screw assembly downward, the pressing plate is pressed against the other side of the blade away from the base to achieve locking and clamping of the blade. After that, the blade is aligned by rotating the turntable and measuring. When it is detected that the center of the blade is lower than the central axis of the turntable, it is necessary to loosen the screw assembly and lift the blade as a whole to the base, and then insert a gasket between the base and the blade so that the center of the blade is close to the central axis of the turntable.

[0037] However, when adjusting the clamping position of the blade, this clamp needs to repeatedly insert shims to make height adjustments, and the thickness and size of the shims are different, so the clamping efficiency and clamping accuracy of the blade are low, which in turn leads to low centering efficiency and centering accuracy of the blade.

[0038] In order to solve the above problems, the present invention proposes a clamp 10, which aims to improve the clamping efficiency and clamping accuracy of the blade 9, and then improve the centering efficiency and centering accuracy of the blade 9.

[0039] Reference Figures 1 to 7 In one embodiment of the present invention, the fixture 10 is applied to a turntable of a five-axis machining center. The fixture 10 includes a base 1, a support base 3, a transmission assembly 4, and a holding assembly 5. The base 1 is used to be installed on the turntable. A threaded hole 135 is provided on a side of the base 1 away from the turntable. A first mounting hole 151 is also provided on a side wall of the base 1. The support base 3 is slidably connected to the base 1 perpendicular to the axial direction of the turntable. A first clamping portion 31 is convexly provided on a side of the support base 3 away from the base 1. The first clamping portion 31 is used to abut against one side of the blade 9.

[0040] The transmission assembly 4 includes a resisting member 41, a pushing member 43 and a first adjusting member 45. The resisting member 41 is arranged on the side of the first clamping portion 31 away from the blade 9. The resisting member 41 is provided with a guide inclined surface 411 on the side facing the support seat 3. The pushing member 43 is arranged between the resisting member 41 and the support seat 3, and slides against the guide inclined surface 411 in a direction approaching or away from the support seat 3. The pushing member 43 is penetrated by a first adjusting hole 431 connected to the threaded hole 135. The first adjusting member 45 is penetrated by the first adjusting hole 431 and is threadedly connected to the threaded hole 135. , by rotating the first adjusting member 45 to drive the pushing member 43 to slide and press against the support seat 3, so as to drive the support seat 3 to slide toward the blade 9; the pressing assembly 5 includes a pressing member 51 and a first fastener 53, the pressing member 51 is provided with a first connecting hole 513 on the side facing the first mounting hole 151, and a second clamping portion 511 is protruded on the side facing the first clamping portion 31, the first fastener 53 passes through the first connecting hole 513 and is threadedly connected to the first mounting hole 151, so that the second clamping portion 511 is pressed against the other side of the blade 9 away from the first clamping portion 31.

[0041] Before being clamped, the blade 9 is first roughly processed into a shape having a T-shaped blade root 91 , and then the T-shaped blade root 91 of the blade 9 is clamped by the clamp 10 .

[0042] The outer diameter of the base 1 on the side away from the turntable is gradually reduced, which is beneficial to reducing the volume of the base 1 and the overall clamping accuracy of the fixture 10 while ensuring the structural rigidity of the base 1.

[0043] The support seat 3 has a support surface on one side facing away from the base 1 . Before clamping the two sides of the blade 9 , the root end surface of the blade 9 can abut against the support surface to facilitate the subsequent clamping work.

[0044] The abutment member 41 can be separately provided with the base 1, or can be formed integrally with the base 1 to slide against one side of the push member 43. When the abutment member 41 is separately provided, the push block can slide out from the open side of the dovetail groove 13 by disassembling the abutment member 41, which is conducive to improving the disassembly efficiency of the push block.

[0045] The first adjustment hole 431 can be a waist-shaped hole. When the first adjustment member 45 is inserted into the first adjustment hole 431, it is loosely matched with the first adjustment hole 431, so that when the first adjustment member 45 rotates, the pusher 43 can move along the hole depth direction perpendicular to the waist-shaped hole. In addition, in order to increase the sliding contact area between the pusher 43 and the guide slope 411 of the abutment member 41, and to enhance the guiding effect of the abutment member 41 on the pusher 43, the side of the pusher 43 facing the abutment member 41 can also be processed with an inclined surface that matches the guiding inclined surface 411.

[0046] In the technical solution of the present invention, the clamp 10 has a first clamping portion 31 and a second clamping portion 511. The first clamping portion 31 is used to abut against one side of the blade 9. The second clamping portion 511 is pressed against the other side of the blade 9 under the locking action of the first fastener 53. The first clamping portion 31 and the second clamping portion 511 enclose a clamping groove 35, thereby clamping the blade 9. When the clamping position of the blade 9 needs to be adjusted, the first fastener 53 is first loosened, and the first adjusting member 45 is rotated to drive the push member 43 to slide on the guide inclined surface 411, thereby driving the support seat 3 to slide toward the blade 9, and the first clamping portion 31 and the blade 9 are abutted against each other to achieve the adjustment of the clamping position of the blade 9 in the first clamping portion 31 and the second clamping portion 511, so that the center of the blade 9 can be close to the central axis of the turntable.

[0047] Therefore, the clamp 10 of the present invention does not need to insert a gasket when adjusting the clamping position of the blade 9. Instead, active adjustment can be achieved by rotating the first adjusting member 45, which is beneficial to improving the clamping efficiency and clamping accuracy of the blade 9, and then beneficial to improving the centering detection efficiency of the blade 9.

[0048] Reference Figures 2 to 4 ,as well as Figure 7 In one embodiment of the present invention, a first fixing groove 15 is recessed on a side wall of the base 1 away from the abutting member 41 , and a first mounting hole 151 is formed on a bottom wall of the first fixing groove 15 . The first fixing groove 15 is used to mount the pressing member 51 .

[0049] In this embodiment, a first fixing groove 15 is recessed in the side wall of the base 1, and the holding member 51 is fixedly installed in the first fixing groove 15. Compared with directly fastening the holding member to the base body, this solution is beneficial to reducing the overall volume of the clamp 10 and improving the assembly accuracy of the holding member 51.

[0050] Reference Figures 2 to 4 ,as well as Figure 7In one embodiment of the present invention, the first fixing groove 15 extends obliquely to the axial direction of the turntable, the holding member 51 is arranged obliquely to the axial direction of the turntable, and the holding assembly 5 also includes an elastic member 55, one end of the elastic member 55 abuts against the bottom wall of the first mounting hole 151, and the other end is connected to the holding member 51 to drive the second clamping portion 511 to move in a direction away from the blade 9.

[0051] The elastic member 55 can be selected as a spring.

[0052] In this embodiment, when the blade 9 needs to be disassembled, the first fastener 53 is rotated outward by a certain distance so that the first fastener 53 moves in a direction away from the holding member 51, and then the holding member 51 is tilted and swung under the action of the rebound force of the elastic member 55, so that the second clamping portion 511 of the holding member 51 moves in a direction away from the blade 9, thereby directly removing the blade 9 from the direction perpendicular to the clamping direction without having to completely disassemble the holding assembly 5, which is beneficial to improving the disassembly efficiency.

[0053] Reference Figure 1 , Figure 3 and Figure 5 In one embodiment of the present invention, the clamp 10 further includes a positioning component 7, which is disposed on a side of the support seat 3 away from the base 1 and is used to limit the blade 9 perpendicular to the clamping direction.

[0054] In this embodiment, in addition to centering the blade 9 in the clamping direction, it is also necessary to center the blade 9 perpendicular to the clamping direction. In this solution, a positioning component 7 is provided on one side of the support seat 3. After the blade 9 is placed on the support, the positioning component 7 is used to limit one side of the blade 9 perpendicular to the clamping direction, thereby achieving the purpose of centering the blade 9, which is beneficial to improving the centering accuracy and efficiency of the blade 9.

[0055] Reference Figure 1 , Figure 3 and Figure 5 In one embodiment of the present invention, a positioning hole 33 is provided on the side of the support seat 3 facing away from the base 1 and is spaced apart from the first clamping portion 31. The positioning assembly 7 includes a limit member 71 and a second adjusting member 73. A second adjusting hole 711 is penetrated on one side of the limit member 71. The second adjusting member 73 is penetrated through the second adjusting hole 711 and is threadedly connected to the positioning hole 33 to adjust the position of the limit member 71 perpendicular to the clamping direction.

[0056] The second adjustment hole 711 may be a waist-shaped hole. When the second adjustment member 73 is inserted into the first adjustment hole 431 , it is loosely matched with the second adjustment hole 711 .

[0057] In this embodiment, the second adjusting member 73 is rotated outward to loosen the fastening connection to the limit member 71, so that the limit member 71 can be movably set to adjust the position of the limit member 71 perpendicular to the clamping direction. Therefore, the limit position of the limit member 71 can be adjusted in real time, which is beneficial to improving the centering efficiency of the blade 9.

[0058] Reference Figure 3 , Figure 4 and Figure 6 In one embodiment of the present invention, a dovetail groove 13 is recessed on a side of the base 1 away from the turntable, and the dovetail groove 13 is gradually expanded along the groove diameter from the opening 131 to the bottom wall. A limiting portion 37 with a gradually expanding outer diameter is convexly provided on one side of the support seat 3, and the limiting portion 37 is slidably inserted in the dovetail groove 13 so that the support seat 3 is limited to the groove wall of the dovetail groove 13 along the groove depth direction of the dovetail groove 13.

[0059] In the present embodiment, a dovetail groove 13 is recessed on one side of the base 1. The dovetail groove 13 not only guides the sliding of the support seat 3, but also limits the support seat 3 along the groove depth direction, thereby preventing the support seat 3 from shifting up and down during the clamping process, which is beneficial to improving the clamping accuracy of the first clamping portion 31 of the support seat 3 on the blade 9.

[0060] Reference Figure 3 , Figure 4 and Figure 6 In one embodiment of the present invention, the groove wall of the dovetail groove 13 is openly provided with an installation opening 133 perpendicular to the axial direction of the turntable, and the limiting portion 37 slides in and out of the installation opening 133 to make the support seat 3 detachable.

[0061] In this embodiment, for blades 9 of different sizes and types, it is generally necessary to replace the entire set of fixtures 10. This solution directly disassembles the support seat 3 and the holding assembly 5, and then does not need to replace the entire set of fixtures 10, which is conducive to improving assembly efficiency. Among them, when the support seat 3 is disassembled, the support seat 3 can be directly slid out from the side of the installation port 133 of the dovetail groove 13 to be taken out or installed, which is conducive to further improving the assembly efficiency of the fixture 10.

[0062] Reference Figures 1 to 4 In one embodiment of the present invention, a second fixing groove 17 is recessed on the side wall of the base 1 facing away from the first mounting hole 151, a second mounting hole 171 is opened on the bottom wall of the second fixing groove 17, a second connecting hole is penetrated on one side of the supporting member 41, and a second fastener 413 is sequentially penetrated through the second connecting hole and the second mounting hole 171 to connect the supporting member 41 to the bottom wall of the second fixing groove 17.

[0063] In this embodiment, a second fixing groove 17 connected to the dovetail groove 13 is recessed on the side wall of the base 1, and the supporting member 41 is fixedly installed in the second fixing groove 17 by means of fasteners, and a guide inclined surface 411 for sliding of the pushing member 43 is provided on the side of the supporting member 41 facing the dovetail groove 13, which is beneficial to ensure the tightness of the supporting member 41, realize the detachable setting of the supporting member 41, and reduce the overall volume of the clamp 10.

[0064] Reference Figures 1 to 3 In one embodiment of the present invention, a plurality of third mounting holes spaced circumferentially are provided on the axial side of the turntable, a plurality of third connecting holes 11 spaced apart are provided on the base 1, and a third fastener 18 is sequentially passed through and connected to the third connecting hole 11 and the third mounting hole to connect the base 1 to the turntable.

[0065] In this embodiment, each third connection hole 11 of the base 1 is fastened to each third mounting hole of the turntable, which is beneficial to ensure the coaxial mounting accuracy of the base 1 and the turntable, and then improve the centering efficiency of the blade 9.

[0066] The present invention also provides a five-axis machining machine, which includes a turntable and the fixture 10 as described above, wherein the turntable can be rotatably arranged along its own axis direction; the base 1 is installed on the turntable to rotate with the turntable. The specific structure of the fixture 10 refers to the above embodiment. Since the five-axis machining machine adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here one by one.

[0067] In one implementation of the centering adjustment of the blade 9, after the clamp 10 is installed on the turntable, the blade 9 is clamped and fixed by the clamp 10. Then, the turntable is rotated to drive the blade 9 to rotate, and the two opposite sides of the blade 9 are respectively measured. If the meter values ​​on the two opposite sides of the blade 9 are consistent, it means that the blade 9 is on the central axis of the turntable, otherwise, the clamping position of the blade 9 needs to be adjusted. The specific adjustment process of the clamping position of the blade 9 can be referred to the above content, which will not be repeated here.

[0068] In summary, the clamp 10 of the embodiment of the present invention can be implemented as follows: the T-shaped root 91 of the blade 9 is finely machined or semi-finished, and the contour tolerance matches that of the support seat 3 and the holding member 51. The base 1 of the clamp 10 is fixed on the A-axis turntable of the machine tool with the third fastener 18, and then the abutment member 41 is fixed on the base 1 with the second fastener 413, and the support seat 3 is pushed into the dovetail groove 13 of the base 1, and then the wedge-shaped pusher 43 is fixed on the base 1 with the first adjustment member 45, and then the limit member 71 for side positioning is fixed on the support seat 3 with the second adjustment member 73, and the holding member 51 is lightly brought to the base 1 of the clamp 10 with the first fastener 53, and sufficient clearance is retained to achieve the loading state. Push the T-shaped root 91 of the blade 9 into the support seat 3, and lock the first fastener 53 with a wrench. By using a meter to properly adjust the pusher 43 and the stopper 71, the rotation center of the blade 9 is aligned with the central axis of the fixture 10, and the first adjustment member 45 and the second adjustment member 73 are tightened. In this way, the blade 9 is firmly fixed, and as long as the blade 9 is not replaced, the blade 9 can be quickly replaced by loosening the first fastener 53. If a new blade 9 is replaced, the side positioning stopper 71 and the pusher 43 need to be readjusted once.

[0069] Correspondingly, the fixture 10 of the embodiment of the present invention has the following beneficial effects: the existing T-type blade root fixtures are all fixed, and the center position cannot be adjusted directly. The adjustment purpose can only be achieved by relying on the gasket of the experience shop. The clamping position of the fixture 10 of the embodiment of the present invention is movable and adjustable, and the center position of the blade 9 can be flexibly adjusted according to the amount of material surplus to always be within a reasonable range. The processing error of the blade root can be adjusted in batches, and the blades 9 with the same tolerance can be classified into one category, and the center axis adjustment can be quickly realized without plugging gaskets. In addition, the existing T-type blade root fixtures are all special fixtures, which cannot adapt to more types of T-type blade root processing. The fixture 10 of the embodiment of the present invention only needs to replace the support seat 3 and the holding piece 51, and there is no need to remove the entire fixture 10 from the equipment, so that blades 9 of different specifications can be quickly processed.

[0070] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A clamp, characterized in that: The fixture is applied to the turntable of a five-axis machining machine, and the fixture comprises: A base, the base is used to be installed on the turntable, a threaded hole is formed on a side of the base away from the turntable, and a first installation hole is formed on a side wall of the base; A support seat, wherein the support seat is slidably connected to the base perpendicular to the axial direction of the turntable, and a first clamping portion is convexly provided on a side of the support seat away from the base, and the first clamping portion is used to abut against one side of the blade; A transmission assembly, the transmission assembly comprising a resisting member, a pushing member and a first adjusting member, the resisting member being arranged on a side of the first clamping portion away from the blade, the resisting member being provided with a guiding inclined surface on a side facing the support seat, the pushing member being arranged between the resisting member and the support seat, and slidingly abutting against the guiding inclined surface in a direction approaching or moving away from the support seat, the pushing member being provided with a first adjusting hole communicating with the threaded hole, the first adjusting member being passed through the first adjusting hole and being threadedly connected to the threaded hole, the pushing member being driven to slide and press against the support seat by rotating the first adjusting member, so as to drive the support seat to slide toward the blade; and A pressing assembly, the pressing assembly comprising a pressing member and a first fastener, the pressing member is provided with a first connecting hole on one side facing the first mounting hole, and is provided with a second clamping portion protruding on one side facing the first clamping portion, the first fastener passes through the first connecting hole and is threadedly connected to the first mounting hole, so that the second clamping portion is pressed against the other side of the blade away from the first clamping portion; The side wall of the base facing away from the abutting member is recessed with a first fixing groove, the bottom wall of the first fixing groove is provided with the first mounting hole, and the first fixing groove is used to mount the pressing member; the first fixing groove extends obliquely to the axial direction of the turntable, and the pressing member is arranged obliquely to the axial direction of the turntable, and the pressing assembly further comprises an elastic member, one end of the elastic member abuts against the bottom wall of the first mounting hole, and the other end is connected to the pressing member to drive the second clamping portion to move in a direction away from the blade; The clamp further comprises a positioning assembly, which is arranged on a side of the support seat away from the base, and is used to limit the blade perpendicular to the clamping direction; a positioning hole spaced apart from the first clamping portion is provided on the side of the support seat away from the base, and the positioning assembly comprises a limiting member and a second adjusting member, a second adjusting hole is penetrated on one side of the limiting member, and the second adjusting member is penetrated through the second adjusting hole and is threadedly connected to the positioning hole to adjust the position of the limiting member perpendicular to the clamping direction; A dovetail groove is recessed on one side of the base away from the turntable, and the dovetail groove is gradually expanding along the groove diameter from the opening to the bottom wall. A limiting portion with a gradually expanding outer diameter is convexly provided on one side of the support seat, and the limiting portion is slidably inserted in the dovetail groove so that the support seat is limited to the groove wall of the dovetail groove along the groove depth direction of the dovetail groove.

2. The clamp according to claim 1, characterized in that The groove wall of the dovetail groove is openly provided with a mounting opening perpendicular to the axial direction of the turntable, and the limiting portion slides in and out of the mounting opening, so that the support seat can be detachably arranged.

3. The clamp according to claim 1, characterized in that A second fixing groove is recessed on the side wall of the base facing away from the first mounting hole, a second mounting hole is opened on the bottom wall of the second fixing groove, a second connecting hole is penetrated on one side of the supporting member, and a second fastener is sequentially penetrated through the second connecting hole and the second mounting hole to connect the supporting member to the bottom wall of the second fixing groove.

4. The clamp according to claim 1, characterized in that The turntable is provided with a plurality of third mounting holes spaced circumferentially on the axial side thereof, the base is provided with a plurality of third connecting holes spaced apart from each other, a third fastener is sequentially passed through and connected to the third connecting hole and the third mounting hole to connect the base to the turntable.

5. A five-axis machining machine tool, characterized in that: The five-axis machining center comprises: A turntable, the turntable being rotatable along its own axis; and According to the clamp as described in any one of claims 1 to 4, the base is mounted on the turntable to rotate with the turntable.

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