An adaptive positioning clamping device for processing blade edge plate

Abstract

An adaptive positioning and clamping device for processing blade edge plate parts, comprising a base, a first / second blade back profile positioning claw, a first / second cylindrical surface positioning seat, an auxiliary support bolt, a ball head positioning pin, a blade body clamping mechanism and a blade body adaptive clamping and positioning mechanism; the blade body clamping mechanism and the blade body adaptive clamping and positioning mechanism are arranged in parallel on the base; the first blade back profile positioning claw is arranged on the blade body clamping mechanism and is distributed on the same side as the blade top; the second blade back profile positioning claw is arranged on the blade body clamping mechanism and is distributed on the same side as the blade root of the blade; the first cylindrical surface positioning seat is fixedly installed on the base and is distributed on the same side as the blade top; the second cylindrical surface positioning seat is fixedly installed on the base and is distributed on the same side as the blade root of the blade; the auxiliary support bolt is vertically screwed on the base, and the auxiliary support bolt is located between the first and second cylindrical surface positioning seats; the ball head positioning pin is horizontally arranged on the blade body clamping mechanism, and the ball head positioning pin is distributed on the same side as the blade root of the blade.

Description

Technical Field

[0001] The invention belongs to the technical field of manufacturing parts of aviation engines, and in particular relates to an adaptive positioning clamping device for processing blade edge parts. Background Art

[0002] When processing the edge plate of a blade part, six-point positioning is currently mostly used on the back of the blade body. However, the blade body contour surface is a transitional curved surface, and the traditional six-point positioning has poor stability. In addition, during the clamping process of the blade body basin surface, a fixed profile clamping method is mostly used. Due to the tolerance of the blade body profile, this will cause positioning errors between the profile of the clamping component and the profile of the blade body, that is, the profiles of the two cannot be completely matched. Then, under the action of the clamping force, the blade body will deflect, causing the blade to detach from the positioning surface. It is precisely because of the existence of this positioning error that the machining accuracy of the blade edge plate is easily reduced. In addition, since there are many surfaces that need to be processed in the blade edge plate, the traditional fixture often cannot complete the machining of all surfaces of the blade edge plate in one clamping, so multiple clamping is required. Multiple clamping is prone to datum misalignment errors, which will also cause machining errors in the blade edge plate, further reducing the machining accuracy of the blade edge plate. Summary of the invention

[0003] In view of the problems existing in the prior art, the present invention provides an adaptive positioning clamping device for processing the blade edge plate part, which adopts a profile positioning claw to position and press the blade body. The profile positioning claw can reduce the contact area with the blade body, effectively reduce the profile matching error, and at the same time, it is assisted by a cylindrical positioning seat to support the blade body, reduce the contact area, and increase the support positioning stability; the profile positioning claw on the blade basin side serves as a clamping component, which has the ability to rotate with two degrees of freedom. The purpose of adaptively pressing the blade basin with the profile positioning claw is achieved through the two-degree-of-freedom rotation, thereby improving the profile fitting accuracy, making it difficult for the blade body to deviate during the clamping process, ensuring the blade positioning accuracy, and then improving the processing accuracy of the blade edge plate part; the clamping device of the present invention can meet the processing of all surfaces of the blade edge plate part through only one clamping, avoiding the positioning error caused by multiple clamping, and further improving the processing accuracy of the blade edge plate part.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: an adaptive positioning clamping device for processing blade edge plate parts, comprising a base, a first blade back profile positioning claw, a second blade back profile positioning claw, a first cylindrical surface positioning seat, a second cylindrical surface positioning seat, an auxiliary support bolt, a ball head positioning pin, a blade body clamping mechanism and a blade body adaptive clamping and positioning mechanism; the blade body clamping mechanism and the blade body adaptive clamping and positioning mechanism are arranged in parallel on the base; the first blade back profile positioning claw is arranged on the blade body clamping mechanism and is distributed on the same side as the blade top; the second blade The back surface positioning claw is arranged on the blade body clamping mechanism and is distributed on the same side as the blade root of the blade; the first cylindrical surface positioning seat is fixedly installed on the base, and the first cylindrical surface positioning seat is distributed on the same side as the blade top; the second cylindrical surface positioning seat is fixedly installed on the base, and the second cylindrical surface positioning seat is distributed on the same side as the blade root of the blade; the auxiliary support bolt is vertically screwed on the base, and the auxiliary support bolt is located between the first cylindrical surface positioning seat and the second cylindrical surface positioning seat; the ball head positioning pin is horizontally arranged on the blade body clamping mechanism, and the ball head positioning pin is distributed on the same side as the blade root of the blade.

[0005] The blade body clamping mechanism comprises a clamping mechanism support seat, an L-shaped clamping arm, a clamping screw and a return spring; the clamping mechanism support seat is vertically fixed on the base, and a clamping arm plug-in hole facing vertically upward is opened at the top of the clamping mechanism support seat; the vertical support arm of the L-shaped clamping arm is located in the clamping arm plug-in hole, and a secondary step through hole is opened in the center of the vertical support arm of the L-shaped clamping arm, and the large-diameter hole of the secondary step through hole is at the bottom and the small-diameter hole is at the top; the screw of the clamping screw passes through the secondary step through hole and is screwed together with the clamping mechanism support seat; the return spring is sleeved on the outside of the screw of the clamping screw and is located in the large-diameter hole of the secondary step through hole, the upper end of the return spring is in contact with the vertical support arm of the L-shaped clamping arm, and the lower end of the return spring is in contact with the clamping mechanism support seat; the first blade back profile positioning claw and the second blade back profile positioning claw are both screwed and fixed on the clamping mechanism support seat; the ball head positioning pin is fixedly connected to the clamping mechanism support seat.

[0006] The blade adaptive clamping and positioning mechanism includes a clamping and positioning mechanism support seat, a push rod, a ball head push bolt, a force transmission rod, a first blade basin profile positioning claw and a second blade basin profile positioning claw; the clamping and positioning mechanism support seat is vertically fixed on the base, a push rod guide slot is provided on the top of the clamping mechanism support seat, a rear slot cover plate is fixedly installed above the push rod guide slot, and a slot baffle plate is fixedly installed at the notch behind the push rod guide slot; the push rod is located in the push rod guide slot, a transfer key slot is provided at the rear end of the push rod, and the front end of the push rod extends to the outside of the clamping and positioning mechanism support seat; the front end of the push rod It is hinged to the middle part of the force transmission rod, and the force transmission rod has horizontal swing freedom; the ball head push bolt is horizontally screwed on the slide groove baffle, the screw rod of the ball head push bolt extends into the push rod guide slide groove, and the ball head part of the ball head push bolt is located in the transfer keyway at the rear end of the push rod, and the ball head push bolt is connected to the push rod through the ball head part and the transfer keyway; the first blade basin profile locating claw is hinged at one end of the force transmission rod, and the first blade basin profile locating claw has pitch and swing freedom; the second blade basin profile locating claw is hinged at the other end of the force transmission rod, and the second blade basin profile locating claw has pitch and swing freedom.

[0007] Beneficial effects of the present invention:

[0008] The adaptive positioning clamping device for processing the blade edge plate part of the present invention adopts a profile positioning claw to position and press the blade body. The profile positioning claw can reduce the contact area with the blade body, effectively reducing the profile matching error, and at the same time, it is assisted by a cylindrical positioning seat to support the blade body, reducing the contact area and increasing the support positioning stability; the profile positioning claw on the blade basin side serves as a clamping component, which has the ability to rotate with two degrees of freedom. The purpose of adaptively pressing the blade basin with the profile positioning claw is achieved through two degrees of freedom rotation, thereby improving the profile fitting accuracy, making it difficult for the blade body to deviate during the clamping process, ensuring the blade positioning accuracy, and then improving the processing accuracy of the blade edge plate part; the clamping device of the present invention can meet the processing of all surfaces of the blade edge plate part through only one clamping, avoiding the positioning error caused by multiple clamping, and further improving the processing accuracy of the blade edge plate part. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 A three-dimensional diagram of an adaptive positioning clamping device for processing blade edge plate parts of the present invention (without blade clamped);

[0010] Figure 2 A three-dimensional diagram of an adaptive positioning clamping device for processing blade edge plate parts of the present invention (with blades clamped);

[0011] Figure 3 A top view of an adaptive positioning clamping device for processing blade edge plate of the present invention (with blade clamped);

[0012] Figure 4 for Figure 3 Middle AA section view;

[0013] In the figure, 1 is a base, 2 is a first blade back surface positioning claw, 3 is a second blade back surface positioning claw, 4 is a first cylindrical surface positioning seat, 5 is a second cylindrical surface positioning seat, 6 is an auxiliary support bolt, 7 is a ball head positioning pin, 8 is a clamping mechanism support seat, 9 is an L-shaped clamping arm, 10 is a clamping screw, 11 is a return spring, 12 is a clamping arm plug hole, 13 is a secondary stepped through hole, 14 is a clamping positioning mechanism support seat, 15 is a push rod, 16 is a ball head push bolt, 17 is a force transmission rod, 18 is a first blade basin surface positioning claw, 19 is a second blade basin surface positioning claw, 20 is a push rod guide slide groove, 21 is a slide groove cover plate, 22 is a slide groove baffle plate, 23 is a transfer key groove, 24 is a blade body, and 25 is an edge plate. DETAILED DESCRIPTION

[0014] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0015] like Figures 1 to 4 As shown, an adaptive positioning clamping device for processing blade edge plate parts comprises a base 1, a first blade back profile positioning claw 2, a second blade back profile positioning claw 3, a first cylindrical surface positioning seat 4, a second cylindrical surface positioning seat 5, an auxiliary support bolt 6, a ball head positioning pin 7, a blade body clamping mechanism and a blade body adaptive clamping and positioning mechanism; the blade body clamping mechanism and the blade body adaptive clamping and positioning mechanism are arranged in parallel on the base 1; the first blade back profile positioning claw 2 is arranged on the blade body clamping mechanism and is distributed on the same side as the blade top; the second blade back profile positioning claw 3 is arranged on the blade body The first cylindrical surface positioning seat 4 is fixedly mounted on the base 1, and the first cylindrical surface positioning seat 4 is distributed on the same side as the blade root of the blade; the second cylindrical surface positioning seat 5 is fixedly mounted on the base 1, and the second cylindrical surface positioning seat 5 is distributed on the same side as the blade root of the blade; the auxiliary support bolt 6 is vertically screwed on the base 1, and the auxiliary support bolt 6 is located between the first cylindrical surface positioning seat 4 and the second cylindrical surface positioning seat 5; the ball head positioning pin 7 is horizontally arranged on the blade body clamping mechanism, and the ball head positioning pin 7 is distributed on the same side as the blade root of the blade.

[0016] The blade body clamping mechanism includes a clamping mechanism support seat 8, an L-shaped clamping arm 9, a clamping screw 10 and a reset spring 11; the clamping mechanism support seat 8 is vertically fixed on the base 1, and a clamping arm plug hole 12 facing upward is provided at the top of the clamping mechanism support seat 8; the vertical support arm of the L-shaped clamping arm 9 is located in the clamping arm plug hole 12, and a secondary stepped through hole 13 is provided at the center of the vertical support arm of the L-shaped clamping arm 9, and the large-diameter hole of the secondary stepped through hole 13 is at the bottom and the small-diameter hole is at the top; the screw of the clamping screw 10 It passes through the secondary stepped through hole 13 and is screwed together with the clamping mechanism support seat 8; the return spring 11 is sleeved on the outside of the screw of the clamping screw 10 and is located in the large diameter channel of the secondary stepped through hole 13, the upper end of the return spring 11 is in contact with the vertical support arm of the L-shaped clamping arm 9, and the lower end of the return spring 11 is in contact with the clamping mechanism support seat 8; the first blade back surface positioning claw 2 and the second blade back surface positioning claw 3 are both screwed and fixed on the clamping mechanism support seat 8; the ball head positioning pin 7 is fixedly connected to the clamping mechanism support seat 8.

[0017] The blade adaptive clamping and positioning mechanism comprises a clamping and positioning mechanism support seat 14, a push rod 15, a ball head push bolt 16, a force transmission rod 17, a first blade basin profile positioning claw 18 and a second blade basin profile positioning claw 19; the clamping and positioning mechanism support seat 14 is vertically fixed on the base 1, a push rod guide slot 20 is provided on the top of the clamping mechanism support seat 8, a rear slot cover plate 21 is fixedly installed above the push rod guide slot 20, and a slot baffle plate 22 is fixedly installed at the notch behind the push rod guide slot 20; the push rod 15 is located in the push rod guide slot 20, a transfer key slot 23 is provided at the rear end of the push rod 15, and the front end of the push rod 15 extends to the outside of the clamping and positioning mechanism support seat 14; the push rod 15 The front end is hinged to the middle part of the force transmission rod 17, and the force transmission rod 17 has horizontal swing freedom; the ball head push bolt 16 is horizontally screwed on the slide groove baffle 22, the screw of the ball head push bolt 16 extends into the push rod guide slide groove 20, and the ball head part of the ball head push bolt 16 is located in the transfer keyway 23 at the rear end of the push rod 15, and the ball head push bolt 16 is connected to the push rod 15 through the ball head part and the transfer keyway 23; the first blade basin profile positioning claw 18 is hinged at one end of the force transmission rod 17, and the first blade basin profile positioning claw 18 has pitch and swing freedom; the second blade basin profile positioning claw 19 is hinged at the other end of the force transmission rod 17, and the second blade basin profile positioning claw 19 has pitch and swing freedom.

[0018] The following describes a one-time use process of the present invention in conjunction with the accompanying drawings:

[0019] First, place the blade part to be processed with the blade body 24 in a vertical state on the first cylindrical positioning seat 4 and the second cylindrical positioning seat 5, and at the same time make the inner surface of the edge plate 25 press against the ball head positioning pin 7, then fine-tune the position of the blade so that the back surface of the blade body 24 presses against the first blade back surface positioning claw 2 and the second blade back surface positioning claw 3, then turn the L-shaped clamping arm 9 to move the horizontal arm of the L-shaped clamping arm 9 above the blade body 24, and then tighten the clamping screw 10 to drive the L-shaped clamping arm 9 to move downward, and the reset spring 11 is compressed until the horizontal arm of the L-shaped clamping arm 9 overlaps the upper edge of the blade body 24, and then tighten the clamping screw 10. At this time, the blade body 24 is clamped and fixed on the first cylindrical positioning seat 4 and the second cylindrical positioning seat 5, and finally screw the auxiliary support bolt 6 so that the upper surface of the nut of the auxiliary support bolt 6 presses against the lower edge of the blade body 24 to achieve auxiliary support of the blade body 4.

[0020] When the above-mentioned actions are completed, the ball head push bolt 16 is screwed to make the ball head push bolt 16 rotate and move, thereby driving the push rod 15 to extend outward along the push rod guide slot 20 until the first blade basin profile positioning claw 18 and the second blade basin profile positioning claw 19 are against the blade basin profile of the blade body 24. During the contact process, due to the horizontal swing freedom of the force transmission rod 17 and the pitch swing freedom of the two blade basin profile positioning claws, it can be ensured that the first blade basin profile positioning claw 18 and the second blade basin profile positioning claw 19 can adaptively fit the blade basin profile of the blade body 24, ensuring the profile fitting accuracy. Finally, the ball head push bolt 16 is tightened. At this time, the blade body 24 realizes all-round positioning and clamping. After that, the various surfaces of the blade edge plate 25 can be processed in the positioning and clamping state, and only this clamping is required to meet the processing of all surfaces of the blade edge plate 25, effectively improving the processing accuracy of the blade edge plate 25.

[0021] The solutions in the embodiments are not intended to limit the patent protection scope of the present invention. All equivalent implementations or changes that do not deviate from the present invention are included in the patent scope of this case.

Claims

1. An adaptive positioning and clamping device for processing blade edge plate, characterized in that: It includes a base, a first blade back profile positioning claw, a second blade back profile positioning claw, a first cylindrical surface positioning seat, a second cylindrical surface positioning seat, an auxiliary support bolt, a ball head positioning pin, a blade body clamping mechanism and a blade body adaptive clamping and positioning mechanism; the blade body clamping mechanism and the blade body adaptive clamping and positioning mechanism are arranged in parallel on the base; the first blade back profile positioning claw is arranged on the blade body clamping mechanism and is distributed on the same side as the blade top; the second blade back profile positioning claw is arranged on the blade body clamping mechanism and is distributed on the same side as the blade root; the first cylindrical surface The positioning seat is fixedly installed on the base, and the first cylindrical positioning seat is distributed on the same side as the blade tip; the second cylindrical positioning seat is fixedly installed on the base, and the second cylindrical positioning seat is distributed on the same side as the blade root; the auxiliary support bolt is vertically screwed on the base, and the auxiliary support bolt is located between the first cylindrical positioning seat and the second cylindrical positioning seat; the ball head positioning pin is horizontally arranged on the blade body clamping mechanism, and the ball head positioning pin is distributed on the same side as the blade root; the blade body adaptive clamping and positioning mechanism includes a clamping and positioning mechanism support seat, a push rod , ball head push bolt, force transfer rod, first blade basin profile positioning claw and second blade basin profile positioning claw; the clamping and positioning mechanism support seat is vertically fixed on the base, a push rod guide slot is provided on the top of the clamping mechanism support seat, a rear slot cover is fixedly installed above the push rod guide slot, and a slot baffle is fixedly installed at the notch behind the push rod guide slot; the push rod is located in the push rod guide slot, a transfer key slot is provided at the rear end of the push rod, and the front end of the push rod extends to the outside of the clamping and positioning mechanism support seat; the front end of the push rod is hinged to the middle of the force transfer rod, and the force transfer rod It has horizontal swing freedom; the ball head push bolt is horizontally screwed on the slide groove baffle, the screw rod of the ball head push bolt extends into the push rod guide slide groove, and the ball head part of the ball head push bolt is located in the transfer keyway at the rear end of the push rod, and the ball head push bolt is connected to the push rod through the ball head part and the transfer keyway; the first blade basin profile locating claw is hinged at one end of the force transmission rod, and the first blade basin profile locating claw has pitch and swing freedom; the second blade basin profile locating claw is hinged at the other end of the force transmission rod, and the second blade basin profile locating claw has pitch and swing freedom.

2. The self-adaptive positioning and clamping device for blade edge processing according to claim 1, characterized in that: The blade body clamping mechanism comprises a clamping mechanism support seat, an L-shaped clamping arm, a clamping screw and a return spring; the clamping mechanism support seat is vertically fixed on the base, and a clamping arm plug-in hole facing vertically upward is opened at the top of the clamping mechanism support seat; the vertical support arm of the L-shaped clamping arm is located in the clamping arm plug-in hole, and a secondary step through hole is opened in the center of the vertical support arm of the L-shaped clamping arm, and the large-diameter hole of the secondary step through hole is at the bottom and the small-diameter hole is at the top; the screw of the clamping screw passes through the secondary step through hole and is screwed together with the clamping mechanism support seat; the return spring is sleeved on the outside of the screw of the clamping screw and is located in the large-diameter hole of the secondary step through hole, the upper end of the return spring is in contact with the vertical support arm of the L-shaped clamping arm, and the lower end of the return spring is in contact with the clamping mechanism support seat; the first blade back profile positioning claw and the second blade back profile positioning claw are both screwed and fixed on the clamping mechanism support seat; the ball head positioning pin is fixedly connected to the clamping mechanism support seat.

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