A lathe turbine clamping device

Abstract

The present invention relates to the field of lathe turbine clamping, and specifically is a lathe turbine clamping device, comprising a main shaft, wherein a clamping unit is installed at the end of the main shaft, and the clamping unit comprises: a clamping body, which is fixedly connected to the end of the main shaft, and the axis of the clamping body is arranged through; a top cylinder, which is arranged inside the main shaft, and the top cylinder is slidably connected in the internal cavity of the main shaft, and one end of the top cylinder is connected to a hydraulic push rod in the main shaft; in the present invention, a method of applying a fastening force to both ends of the turbine is designed to achieve the clamping and fixing of the turbine, and will not affect the mechanical processing of the turbine end face by the turning tool, so as to avoid clamping the outer ring of the turbine and squeezing and damaging the blades of the turbine. At the same time, when processing turbines of different specifications, only one component, a pressure plate, needs to be replaced, that is, a pressure plate with a larger or smaller width of the clearance opening is used, and there is no need to replace other components, so the flexibility and replacement efficiency are high, and the cost is also reduced.

Description

Technical Field

[0001] The invention relates to the technical field of lathe turbine clamping, in particular to a lathe turbine clamping device. Background Art

[0002] A turbine is a mechanical device that is usually used to convert the energy of a fluid into mechanical energy. Turbines are widely used in power generation, aviation, ships, automobiles and other fields.

[0003] The turbine is generally formed by casting and then undergoes mechanical finishing. During the mechanical finishing, the turbine needs to be fixed on a lathe, that is, the turbine is used as a rotating part, and the machining tool performs turning and other mechanical processing on the end face of the turbine.

[0004] At present, the turbine is generally fixed by a three-jaw chuck of a lathe. A conical inner hole is provided in the middle of the three-jaw chuck, which matches the turbine nose. The turbine nose is placed in the hole for pre-positioning. The three-jaw chuck adopts a hydraulic or pneumatic chuck. The three-jaw chuck claws shrink inward at the same time and clamp on the outer circle of the turbine, fixing it in the circumferential direction. Figure 1 As shown; however, the clamping force of the three-jaw chuck is too large. If the outer wall thickness of the turbine is thin, the clamping force is too large, which can easily cause deformation of the turbine blades. The axial tapered clamping needs to be adjusted and designed according to the shape of the turbine nose. At the same time, the three-jaw chuck limiter needs to be adjusted and replaced according to the size of the turbine. Every time the turbine on the production line is changed, it is necessary to replace three-jaw chucks of different specifications, which is more cumbersome. Summary of the invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the problem in the prior art that the three-jaw chuck will clamp, squeeze and deform the turbine blades.

[0006] In order to solve the above technical problems, the present invention provides a lathe turbine clamping device, comprising:

[0007] A main shaft, a clamping unit is installed at the end of the main shaft, and the clamping unit includes:

[0008] A clamping body, which is fixedly connected to the end of the main shaft, and the axis of the clamping body is arranged through;

[0009] A push cylinder is slidably connected in the inner cavity of the main shaft, and one end of the push cylinder is connected to a hydraulic push rod in the main shaft;

[0010] A pull rod, the pull rod is slidably connected in the clamp body, and one end of the pull rod is fixedly connected to the other end of the top cylinder;

[0011] A fixed block, the fixed block is fixedly connected to the other end surface of the pull rod, and the end surface of the fixed block is provided with a groove matching the turbine nose;

[0012] A plurality of connecting rods are provided, one end of which is connected to the end face of the clamping body, and the other end of which is fixedly connected to a pressure plate. A clearance opening is provided at the axial position of the pressure plate, the clearance opening radially passes through one side of the pressure plate, and a turbine to be processed is installed between the pressure plate and the fixed block.

[0013] In one embodiment of the present invention, a positioning plate is provided at the end of the fixing block, a positioning hole is provided at the axial position of the positioning plate, the inner circle of the positioning hole is in the shape of an inner gear ring, and the shape of the inner circle of the positioning hole is adapted to the shape of the turbine nose.

[0014] In one embodiment of the present invention, a plurality of stepped grooves are provided on the surface of the pressure plate opposite to the fixing block, and the end surface of the turbine can be attached to the stepped grooves.

[0015] In one embodiment of the present invention, a plurality of mounting holes are evenly arranged on the end surface of the clamp body; an insertion rod is provided at the end of each of the connecting rods, and the insertion rod can be inserted into the mounting hole;

[0016] The outer ring of the clamp body is fixedly connected to a ring body, and a plurality of sliding grooves are arranged on the end surface of the ring body. The positions of the sliding grooves are arranged one by one opposite to the mounting holes, and a sliding block is slidably connected in each sliding groove. A traction rod is fixedly connected to the end surface of the sliding block, and a cross plate is fixedly connected to the end of the traction rod. A top screw is threadedly connected to the cross plate, and the top screw presses on the force-bearing block fixed to the outer ring of the connecting rod.

[0017] In one embodiment of the present invention, a fixing groove is provided on each of the force-bearing blocks, and the end of the top screw can be pressed into the fixing groove.

[0018] In one embodiment of the present invention, a rotation groove is provided on the side wall of each sliding block, and a ball is arranged in each rotation groove, and the ball rolls on the inner side wall of the sliding groove.

[0019] In one embodiment of the present invention, a plurality of fixed teeth are provided on the surface of the sliding block, and the fixed teeth cooperate with the locking teeth provided on the inner surface of the sliding groove.

[0020] In one embodiment of the present invention, a plurality of telescopic holes are evenly provided in the clamp body, the telescopic holes are provided along the radial direction of the clamp body, and the telescopic holes are connected to the mounting hole and the inner wall through which the axis of the clamp body passes, and a plurality of paving grooves are evenly provided through which the axis of the clamp body passes, and the paving grooves and the telescopic holes are arranged to overlap one by one;

[0021] A spring-connected ejector pin is provided in each of the telescopic holes;

[0022] Each of the plug rods is provided with a bayonet, the plug rod is embedded in the mounting hole, and the bayonet is opposite to the telescopic hole one by one;

[0023] A plurality of ejector blocks are evenly fixed on the outer ring of the pull rod, and the ejector blocks are slidably connected in the clearance grooves, and the ejector blocks can push the ejector pins into the bayonet.

[0024] In one embodiment of the present invention, the clearance groove extends to above the telescopic hole.

[0025] In one embodiment of the present invention, a plurality of protrusions are provided in each of the stepped grooves, and the protrusions are pressed against the end surface of the turbine.

[0026] The present invention is beneficial in that:

[0027] 1. In the present invention, a method of applying a fastening force to both ends of the turbine is designed to achieve the clamping and fixing of the turbine, and will not affect the machining of the turbine end face by the turning tool, thereby avoiding clamping the outer ring of the turbine and squeezing and damaging the blades of the turbine. At the same time, when processing turbines of different specifications, only one component, the pressure plate, needs to be replaced, that is, a pressure plate with a larger or smaller width of the clearance opening is used, and there is no need to replace other components. The flexibility and replacement efficiency are high, and the cost will also be reduced.

[0028] 2. In the present invention, the inner ring of the positioning hole is in the shape of an inner gear ring, which is adapted to the shape of the outer ring of the turbine nose. When the turbine nose is embedded in the groove, the outer ring of the turbine nose and the positioning hole are engaged with each other to restrain the rotation of the turbine. Later, combined with the extrusion of the pressure plate, the clamping stability of the turbine can be improved, which is helpful to improve the machining accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to make the contents of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments of the present invention in conjunction with the accompanying drawings.

[0030] Figure 1 It is a schematic diagram of a three-jaw chuck clamping a turbine in the prior art;

[0031] Figure 2 A three-dimensional diagram of the lathe turbine clamping device of the present invention;

[0032] Figure 3 An exploded view of the lathe turbine clamping device of the present invention;

[0033] Figure 4 It is a cross-sectional view of the lathe turbine clamping device of the present invention;

[0034] Figure 5 A three-dimensional diagram of a positioning plate in the present invention;

[0035] Figure 6 A front view of the turbine clamped in the present invention;

[0036] Figure 7 A three-dimensional diagram of a pressure plate in the present invention;

[0037] Figure 8 It is a three-dimensional diagram of the coordination of the traction rod and the connecting rod in the present invention;

[0038] Fig. 9 It is a three-dimensional diagram of the cooperation between the ring body and the pressing plate in the present invention;

[0039] Fig.10 A three-dimensional diagram of the insertion rod in the present invention;

[0040] Fig.11 is a three-dimensional diagram of a traction rod in the present invention;

[0041] Fig.12 is a cross-sectional view of the ring body in the present invention;

[0042] Fig.13 It is a specific cross-sectional view of the present invention.

[0043] In the figure: 101, turbine; 1, main shaft; 2, clamping body; 3, ejector cylinder; 4, hydraulic ejector rod; 5, pull rod; 6, fixed block; 7, groove; 8, connecting rod; 9, pressure plate; 10, clearance opening; 11, positioning plate; 12, positioning hole; 13, stepped groove; 14, mounting hole; 15, plug rod; 16, ring body; 17, slide groove; 18, slider; 19, traction rod; 20, cross plate; 21, ejector screw; 22, force block; 23, fixed groove; 24, ball bearing; 25, fixed tooth; 26, latch tooth; 27, telescopic hole; 28, clearance groove; 29, ejector pin; 30, latch; 31, ejector block; 32, protrusion. DETAILED DESCRIPTION

[0044] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0045] Reference Figure 2 - Figure 7A lathe turbine clamping device comprises: a spindle 1, a clamping unit is installed at the end of the spindle 1, and the clamping unit comprises: a clamping body 2, the clamping body 2 is fixedly connected to the end of the spindle 1, and the axis of the clamping body 2 is set through; a top cylinder 3, the top cylinder 3 is slidably connected in the internal cavity of the spindle 1, and one end of the top cylinder 3 is connected to the hydraulic push rod 4 in the spindle 1; a pull rod 5, the pull rod 5 is slidably connected in the clamping body 2, and one end of the pull rod 5 is fixedly connected to the other end of the top cylinder 3; a fixed block 6, the fixed block 6 is fixedly connected to the other end surface of the pull rod 5, and the end surface of the fixed block 6 is provided with a groove 7 that matches the nose of the turbine 101; a plurality of connecting rods 8, one end of the connecting rod 8 is connected to the end surface of the clamping body 2, and the other end of the connecting rod 8 is fixedly connected to a pressure plate 9, and a clearance opening 10 is provided at the axis position of the pressure plate 9, The clearance opening 10 radially penetrates one side of the pressure plate 9, and a turbine 101 to be processed is installed between the pressure plate 9 and the fixed block 6; in this embodiment, a method of applying a tightening force to both ends of the turbine 101 is designed to achieve the clamping and fixing of the turbine 101, and will not affect the mechanical processing of the end face of the turbine 101 by the turning tool; the main shaft 1 is an axis that drives the workpiece to rotate on the lathe; a hydraulic push rod 4 is arranged inside the main shaft 1, and the output end of the hydraulic push rod 4 is fixedly connected to a push tube 3, and the other end of the push tube 3 is fixedly connected to one end of a pull rod 5, and the hydraulic push rod 4 can drive the pull rod 5 to move along the axis direction of the main shaft 1 through the push tube 3; a fixed block 6 is arranged on the other end face of the pull rod 5, and the fixed block 6 is used to cooperate with the turbine 101, and a groove 7 adapted to the nose of the turbine 101 is provided on the outer end face of the fixed block 6;

[0046] In the initial state, the hydraulic push rod 4 drives the fixed block 6 to withdraw away from the pressure plate 9 through the pull rod 5. At this time, the space enclosed by the fixed block 6 and the pressure plate 9 is the space for placing the turbine 101. The nose end of the turbine 101 is embedded in the groove 7, and the end face of the turbine 101 is opposite to the pressure plate 9. Then the hydraulic push rod 4 is driven to push the fixed block 6 to move toward the pressure plate 9. Then the fixed block 6 cooperates with the pressure plate 9 to clamp the turbine 101. At this time, the fixed block 6 is squeezed at the nose of the turbine 101, and the pressure plate 9 is squeezed at the end face of the turbine 101 to stably clamp the turbine 101 to avoid clamping the outer ring of the turbine 101 and squeezing and damaging the blades of the turbine 101; at the same time, the make way 10 opened on the pressure plate 9 makes way for space so that the turning tool can process the end face of the turbine 101;

[0047] Taking into account the various sizes of turbines 101, when processing turbines 101 of different sizes, only one component, the pressure plate 9, needs to be replaced, that is, a pressure plate 9 with a larger or smaller width of the make way opening 10 is used, without replacing other components, which has high flexibility and replacement efficiency and reduces costs.

[0048] Reference Figure 2 - Figure 7A positioning plate 11 is provided at the end of the fixing block 6, and a positioning hole 12 is provided at the axial position of the positioning plate 11. The inner circle of the positioning hole 12 is in the shape of an inner tooth ring, and the shape of the inner circle of the positioning hole 12 is adapted to the shape of the nose of the turbine 101; the positioning plate 11 is fixed to the fixing block 6 by bolts, and the positioning hole 12 provided on the positioning plate 11 coincides with the groove 7 on the fixing block 6, and the inner circle of the positioning hole 12 is in the shape of an inner tooth ring, adapted to the shape of the outer circle of the nose of the turbine 101. When the nose of the turbine 101 is embedded in the groove 7, the outer circle of the nose of the turbine 101 is meshed and stuck with the positioning hole 12, so that the rotation of the turbine 101 is constrained. In the later stage, the extrusion of the pressure plate 9 can improve the clamping stability of the turbine 101, which is conducive to improving the machining accuracy.

[0049] Reference Figure 2 - Figure 7 A plurality of stepped grooves 13 are provided on the surface of the pressure plate 9 opposite to the fixed block 6, and the end face of the turbine 101 can be attached to the stepped groove 13; when the turbine 101 is placed between the pressure plate 9 and the fixed block 6, the nose of the turbine 101 is embedded in the groove 7, and the end face of the turbine 101 is attached to the stepped groove 13. The stepped groove 13 constrains the end face of the turbine 101, thereby further improving the stability of the turbine 101.

[0050] Reference Figure 8 - Fig.13 , a plurality of mounting holes 14 are evenly arranged on the end surface of the clamp body 2; an insertion rod 15 is arranged at the end of each of the connecting rods 8, and the insertion rod 15 can be inserted into the mounting hole 14; a ring body 16 is fixedly connected to the outer ring of the clamp body 2, and a plurality of slide grooves 17 are arranged on the end surface of the ring body 16, and the positions of the slide grooves 17 are arranged one by one opposite to the mounting holes 14, and a slider 18 is slidably connected in each slide groove 17, and a traction rod 19 is fixedly connected to the end surface of the slider 18, and a cross plate 20 is fixedly connected to the end of the traction rod 19, and a top screw 21 is threadedly connected to the cross plate 20, and the top screw 21 is pressed on the force block 22 fixed on the outer ring of the connecting rod 8; considering the convenient replacement of the pressing plate 9, the pressing plate 9 is designed to be quick-release. The insert rod 15 is inserted into the mounting hole 14, and then the traction rod 19 is pushed to make the slider 18 slide in the slide groove 17. When the cross plate 20 moves to the force block 22, the push of the traction rod 19 is stopped, and then the top screw 21 is rotated so that the top screw 21 is pressed against the force block 22. At this time, the top screw 21 squeezes the force block 22, so that the force block 22 has a tendency to move toward the clamp body 2, that is, the pressure plate 9 is fixed on the clamp body 2, and the turbine 101 is subsequently placed; when the pressure plate 9 needs to be replaced, the top screw 21 is loosened, the traction rod 19 is pushed away from the force block 22, and the pressure plate 9 can be removed; the quick-release design of the pressure plate 9 helps to improve the processing efficiency of the turbine 101.

[0051] Reference Figure 8 - Fig.13A fixing groove 23 is provided on each of the force-bearing blocks 22, and the end of the top screw 21 can be pressed into the fixing groove 23; the fixing groove 23 provided on the force-bearing block 22, in conjunction with the top screw 21, helps to improve the stability of the flat traction rod 19, and also improves the stability of the pressure plate 9 after being fixed, so that the pressure plate 9 can maintain a stable state when rotating with the main shaft 1.

[0052] Reference Figure 8 - Fig.13 A rotation groove is provided on the side wall of each slider 18, and a ball 24 is provided in each rotation groove. The ball 24 is attached to the inner wall of the slide groove 17 and rolls. The ball 24 is provided on the slider 18 so that when the slider 18 slides along the slide groove 17, the slider 18 can move smoothly, which facilitates the flexible movement of the top screw 21 to the fixed groove 23 position, and avoids the slider 18 being stuck in the slide groove 17, making it difficult to adjust the position between the top screw 21 and the fixed groove 23.

[0053] Reference Fig.11 - Fig.12 The surface of the slider 18 is provided with a plurality of fixed teeth 25, and the fixed teeth 25 cooperate with the latching teeth 26 provided on the inner surface of the slide groove 17; after the fixed teeth 25 are provided on the slider 18, and the top screw 21 is pushed into the fixed groove 23, the traction rod 19 tightens the slider 18, and the slider 18 is tightly attached to the slide groove 17, and the fixed teeth 25 and the latching teeth 26 are engaged with each other. At this time, the slider 18 and the slide groove 17 are mutually constrained and stabilized, and the stability of the slider 18 is once again improved, thereby improving the stability of the pressure plate 9 after being fixed.

[0054] Reference Figure 8 - Fig.13A plurality of telescopic holes 27 are evenly arranged in the clamp body 2, and the telescopic holes 27 are arranged along the radial direction of the clamp body 2, and the telescopic holes 27 communicate with the mounting hole 14 and the inner side wall through which the axis of the clamp body 2 passes, and a plurality of make way grooves 28 are evenly arranged on the inner side wall through which the axis of the clamp body 2 passes, and the make way grooves 28 are arranged to coincide with the telescopic holes 27 one by one; a spring-connected ejector pin 29 is arranged in each of the telescopic holes 27; a bayonet 30 is arranged on each of the insertion rods 15, and the insertion rods 15 are embedded in the mounting hole 14, and the bayonet 30 is opposite to the telescopic holes 27 one by one; a plurality of ejector blocks 31 are evenly fixed on the outer ring of the pull rod 5, and the ejector blocks 31 are slidably connected in the make way grooves 28, and the ejector blocks 31 can push the ejector pin 29 into the bayonet 30; the insertion rod 15 is inserted into the mounting hole 14, and the ejector screw 21 is pushed into the groove 7, and then Place the turbine 101, then drive the hydraulic push rod 4, the pull rod 5 moves toward the pressure plate 9, the fixing block 6 cooperates with the pressure plate 9 to clamp and fix the turbine 101, and at the same time, when the pull rod 5 moves toward the pressure plate 9, the push block 31 on the outer ring of the pull rod 5 squeezes the push pin 29, and the push pin 29 moves along the telescopic hole 27 and moves into the bayonet 30 on the insertion rod 15, that is, the push pin 29 is embedded in the bayonet 30, and the insertion rod 15 is clamped in the installation hole 14. At this time, the pressure plate 9 is doubly fixed, one is that the push screw 21 squeezes and fixes the force block 22 to achieve the fixation of the pressure plate 9, and the other is that the push pin 29 is embedded in the bayonet 30, and the insertion rod 15 is constrained in the installation to achieve the fixation of the pressure plate 9, so that when the pressure plate 9 rotates at high speed with the main shaft 1, the pressure plate 9 can also stably clamp the turbine 101.

[0055] Reference Fig.13 , the clearance groove 28 extends to the top of the telescopic hole 27; the position and size of the clearance groove 28 are set as Fig.13 As shown in , the upper and lower positions of the telescopic hole 27 are both provided with clearance grooves 28. The clearance groove 28 below the telescopic hole 27 allows the top block 31 to move to the initial position when the pull rod 5 is retracted and reset. As for the clearance groove 28 above the telescopic hole 27, when the axial length of the clamped turbine 101 is shorter, the pull rod 5 has a larger movement stroke toward the pressure plate 9, so that after the top block 31 has squeezed the top pin 29 into the bayonet 30, the top block 31 can continue to move toward the pressure plate 9, ensuring that the pull rod 5 has sufficient movement stroke, thereby clamping and fixing the turbine 101.

[0056] Reference Figure 7 Each of the stepped grooves 13 is provided with a plurality of protrusions 32, and the protrusions 32 are pressed against the end surface of the turbine 101; the protrusions 32 are provided in the stepped grooves 13 to enhance the stability between the turbine 101 and the stepped grooves 13. Meanwhile, considering the material and strength of the turbine 101, the designed protrusions 32 can be made of the same metal material as the pressure plate 9, and can extrude the turbine 101 with a harder material. Alternatively, the protrusions 32 can be made of rubber material, which is suitable for the turbine 101 with a softer material and plays a role in protecting the turbine 101.

[0057] Working principle: In this embodiment, a method of applying a tightening force to both ends of the turbine 101 is designed to achieve the clamping and fixing of the turbine 101, and will not affect the mechanical processing of the end face of the turbine 101 by the turning tool; the main shaft 1 is the shaft on the lathe that drives the workpiece to rotate; a hydraulic push rod 4 is arranged inside the main shaft 1, and the output end of the hydraulic push rod 4 is fixedly connected to a push cylinder 3, and the other end of the push cylinder 3 is fixedly connected to one end of a pull rod 5, and the hydraulic push rod 4 can drive the pull rod 5 to move along the axis direction of the main shaft 1 through the push cylinder 3; a fixing block 6 is arranged on the other end face of the pull rod 5, and the fixing block 6 is used to cooperate with the turbine 101, and a groove 7 adapted to the nose of the turbine 101 is provided on the outer end face of the fixing block 6;

[0058] In the initial state, the hydraulic push rod 4 drives the fixed block 6 to withdraw away from the pressure plate 9 through the pull rod 5. At this time, the space enclosed by the fixed block 6 and the pressure plate 9 is the space for placing the turbine 101. The nose end of the turbine 101 is embedded in the groove 7, and the end face of the turbine 101 is opposite to the pressure plate 9. Then the hydraulic push rod 4 is driven to push the fixed block 6 to move toward the pressure plate 9. Then the fixed block 6 cooperates with the pressure plate 9 to clamp the turbine 101. At this time, the fixed block 6 is squeezed at the nose of the turbine 101, and the pressure plate 9 is squeezed at the end face of the turbine 101 to stably clamp the turbine 101 to avoid clamping the outer ring of the turbine 101 and squeezing and damaging the blades of the turbine 101; at the same time, the make way 10 opened on the pressure plate 9 makes way for space so that the turning tool can process the end face of the turbine 101;

[0059] Considering the various sizes of the turbine 101, when processing turbines 101 of different sizes, only one component, the pressure plate 9, needs to be replaced, that is, a pressure plate 9 with a larger or smaller width of the opening 10 is used, and other components do not need to be replaced, which has high flexibility and replacement efficiency, and the cost is also reduced;

[0060] The positioning plate 11 is fixed to the fixing block 6 by bolts, and the positioning hole 12 opened on the positioning plate 11 coincides with the groove 7 on the fixing block 6, and the inner ring of the positioning hole 12 is in the shape of an inner tooth ring, which is adapted to the shape of the outer ring of the nose of the turbine 101. When the nose of the turbine 101 is embedded in the groove 7, the outer ring of the nose of the turbine 101 and the positioning hole 12 are meshed and clamped with each other, so that the rotation of the turbine 101 is constrained. In the later stage, the extrusion of the pressure plate 9 can improve the clamping stability of the turbine 101, which is conducive to improving the machining accuracy.

[0061] When the turbine 101 is placed between the pressure plate 9 and the fixing block 6, the nose of the turbine 101 is embedded in the groove 7, and the end surface of the turbine 101 is attached to the stepped groove 13. The stepped groove 13 constrains the end surface of the turbine 101, further improving the stability of the turbine 101.

[0062] Considering the convenient replacement of the pressure plate 9, the pressure plate 9 is designed to be quick-released. The insertion rod 15 is inserted into the mounting hole 14, and then the traction rod 19 is pushed to make the slider 18 slide in the slide groove 17. When the cross plate 20 moves to the force block 22, the push of the traction rod 19 is stopped, and then the top screw 21 is rotated so that the top screw 21 is pressed against the force block 22. At this time, the top screw 21 squeezes the force block 22, so that the force block 22 has a tendency to move toward the clamp body 2, that is, the pressure plate 9 is fixed on the clamp body 2, and the turbine 101 is subsequently placed; when the pressure plate 9 needs to be replaced, the top screw 21 is loosened, the traction rod 19 is pushed away from the force block 22, and the pressure plate 9 can be removed; the quick-release design of the pressure plate 9 helps to improve the processing efficiency of the turbine 101;

[0063] The fixing groove 23 provided on the force-bearing block 22 cooperates with the top screw 21 to help improve the stability of the flat traction rod 19, and also improves the stability of the pressure plate 9 after being fixed, so that the pressure plate 9 can also maintain a stable state when rotating with the main shaft 1; the ball bearing 24 is provided on the slider 18, so that when the slider 18 slides along the slide groove 17, the slider 18 can move smoothly, and the top screw 21 can be flexibly moved to the fixed groove 23 position, so as to avoid the slider 18 being stuck in the slide groove 17, and it is difficult to adjust the position between the top screw 21 and the fixing groove 23; the fixing tooth 25 is provided on the slider 18, and after the top screw 21 is pressed in the fixing groove 23, the traction rod 19 tightens the slider 18, and the slider 18 is tightly attached to the slide groove 17, and at the same time, the fixing tooth 25 and the locking tooth 26 are meshed with each other, at this time, the slider 18 and the slide groove 17 are mutually constrained and stabilized, and the stability of the slider 18 is once again improved, thereby improving the stability of the pressure plate 9 after being fixed;

[0064] The insert rod 15 is inserted into the mounting hole 14, the top screw 21 is pressed into the groove 7, and then the turbine 101 is placed. After that, the hydraulic push rod 4 is driven, and the pull rod 5 moves toward the pressure plate 9. The fixing block 6 cooperates with the pressure plate 9 to clamp and fix the turbine 101. At the same time, when the pull rod 5 moves toward the pressure plate 9, the top block 31 on the outer ring of the pull rod 5 squeezes the top pin 29, and the top pin 29 moves along the telescopic hole 27 and moves into the bayonet 30 on the insert rod 15, that is, the top pin 29 is embedded in the bayonet 30, and the insert rod 15 is clamped in the mounting hole 14. At this time, the pressure plate 9 is doubly fixed, one is that the top screw 21 squeezes and fixes the force block 22 to achieve the fixation of the pressure plate 9, and the other is that the push pin 29 is embedded in the bayonet 30, and the insert rod 15 is constrained in the installation, so as to achieve the fixation of the pressure plate 9, so that when the pressure plate 9 rotates at high speed with the main shaft 1, the pressure plate 9 can also stably clamp the turbine 101;

[0065] The position and size of the give way slot 28 are set as Fig.13As shown in , the upper and lower positions of the telescopic hole 27 are both provided with clearance grooves 28. The clearance groove 28 below the telescopic hole 27 allows the top block 31 to move to the initial position when the pull rod 5 is retracted and reset. As for the clearance groove 28 above the telescopic hole 27, when the axial length of the clamped turbine 101 is shorter, the pull rod 5 has a larger movement stroke toward the pressure plate 9, so that after the top block 31 has squeezed the top pin 29 into the bayonet 30, the top block 31 can continue to move toward the pressure plate 9, ensuring that the pull rod 5 has sufficient movement stroke, thereby clamping and fixing the turbine 101.

[0066] Obviously, the above embodiments are merely examples for clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the protection scope of the invention.

Claims

1. A lathe turbine clamping device, characterized in that: include: A main shaft (1) is provided with a clamping unit mounted at the end of the main shaft (1), and the clamping unit comprises: A clamp body (2), the clamp body (2) is fixedly connected to the end of the main shaft (1), and the axis of the clamp body (2) is arranged to pass through; A top cylinder (3), the top cylinder (3) is slidably connected in the inner cavity of the main shaft (1), and one end of the top cylinder (3) is connected to a hydraulic push rod (4) in the main shaft (1); A pull rod (5), the pull rod (5) is slidably connected in the clamp body (2), and one end of the pull rod (5) is fixedly connected to the other end of the top tube (3); A fixing block (6), the fixing block (6) being fixedly connected to the other end surface of the pull rod (5), and the end surface of the fixing block (6) being provided with a groove (7) matching the nose of the turbine (101); A plurality of connecting rods (8), one end of the connecting rod (8) is connected to the end surface of the clamp body (2), the other end of the connecting rod (8) is fixedly connected to a pressure plate (9), a clearance opening (10) is provided at an axial position of the pressure plate (9), the clearance opening (10) radially penetrates one side of the pressure plate (9), and a turbine (101) to be processed is installed between the pressure plate (9) and the fixed block (6); A plurality of mounting holes (14) are evenly arranged on the end surface of the clamp body (2); an insertion rod (15) is provided at the end of each connecting rod (8), and the insertion rod (15) can be inserted into the mounting hole (14); The outer ring of the clamp body (2) is fixedly connected to a ring body (16), and a plurality of slide grooves (17) are provided on the end surface of the ring body (16). The positions of the slide grooves (17) are arranged one by one opposite to the mounting holes (14), and a slider (18) is slidably connected in each slide groove (17). A traction rod (19) is fixedly connected to the end surface of the slider (18), and a cross plate (20) is fixedly connected to the end of the traction rod (19). A top screw (21) is threadedly connected to the cross plate (20), and the top screw (21) is pressed against a force block (22) fixedly connected to the outer ring of the connecting rod (8); The clamp body (2) has a plurality of telescopic holes (27) evenly formed in it. The telescopic holes (27) are formed along the radial direction of the clamp body (2). The telescopic holes (27) are connected to the mounting hole (14) and the inner wall of the clamp body (2) through which the axis thereof passes. The inner wall of the clamp body (2) through which the axis thereof passes has a plurality of paving grooves (28) evenly formed. The paving grooves (28) and the telescopic holes (27) are arranged to overlap one by one. A spring-connected ejector pin (29) is provided in each telescopic hole (27); Each of the insertion rods (15) is provided with a bayonet (30), the insertion rod (15) is embedded in the mounting hole (14), and the bayonet (30) and the telescopic hole (27) are opposite to each other. A plurality of top blocks (31) are evenly fixed to the outer ring of the pull rod (5), and the top blocks (31) are slidably connected in the clearance groove (28). The top blocks (31) can push the top pin (29) into the bayonet (30).

2. A lathe turbine clamping device according to claim 1, characterized in that: A positioning plate (11) is provided at the end of the fixing block (6), and a positioning hole (12) is provided at an axial position of the positioning plate (11). The inner ring of the positioning hole (12) is in the shape of an inner tooth ring, and the shape of the inner ring of the positioning hole (12) matches the shape of the nose of the turbine (101).

3. The lathe turbine clamping device according to claim 1, characterized in that: A plurality of stepped grooves (13) are provided on the surface of the pressure plate (9) opposite to the fixing block (6), and the end surface of the turbine (101) can be attached to the stepped grooves (13).

4. The lathe turbine clamping device according to claim 1, characterized in that: A fixing groove (23) is provided on each of the force-bearing blocks (22), and the end of the top screw (21) can be pushed into the fixing groove (23).

5. The lathe turbine clamping device according to claim 4, characterized in that: A rotation groove is provided on the side wall of each sliding block (18), and a ball (24) is provided in each rotation groove. The ball (24) is attached to the inner side wall of the sliding groove (17) and rolls.

6. The lathe turbine clamping device according to claim 5, characterized in that: A plurality of fixed teeth (25) are provided on the surface of the sliding block (18), and the fixed teeth (25) cooperate with the latching teeth (26) provided on the inner surface of the sliding groove (17).

7. The lathe turbine clamping device according to claim 1, characterized in that: The clearance groove (28) extends to above the telescopic hole (27).

8. The lathe turbine clamping device according to claim 3, characterized in that: A plurality of protrusions (32) are provided in each of the stepped grooves (13), and the protrusions (32) are pressed against the end surface of the turbine (101).

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