CN115229526A

CN115229526A - Adjustable impeller clamp for plunge milling of impeller and using method thereof

Info

Publication number: CN115229526A
Application number: CN202210929801.0A
Authority: CN
Inventors: 朱建宁
Original assignee: Dalian Jiaotong University
Current assignee: Dalian Jiaotong University
Priority date: 2022-08-04
Filing date: 2022-08-04
Publication date: 2022-10-25

Abstract

The invention discloses an adjustable impeller clamp for plunge milling of an impeller and a using method of the adjustable impeller clamp. According to the invention, the turntable is manually finely adjusted, so that the gear is driven to rotate by the turntable through the rotating shaft, the gear rotates to drive the first toothed bar and the second toothed bar to reversely and relatively move, the first toothed bar and the second toothed bar respectively drive the mounting blocks on two sides to move towards the center close to the cross bar, the mounting blocks drive the impeller seats on two sides to tightly press the bottom of the impeller to tightly clamp and fix the bottom of the impeller, and then the positioning nut is screwed by using a wrench to tightly press the impeller below the positioning nut, so that the impeller is stably clamped, and the impeller is prevented from being displaced in the plunge milling process to influence the processing precision.

Description

Adjustable impeller clamp for plunge milling of impeller and using method thereof

Technical Field

The invention relates to the technical field of impeller machining, in particular to an adjustable impeller clamp for impeller plunge milling machining and a using method thereof.

Background

The impeller refers to a disk provided with moving blades, is a component of an impulse turbine rotor, and can also be a general name of the disk and the rotating blades arranged on the disk. The impellers can be classified according to the shape and the opening and closing conditions. The impeller is usually subjected to plunge milling during machining, when blades are plunged, the blades can be milled from the top of a workpiece to the root of the workpiece, and extremely complex surface geometric shapes can be machined through simple translation of an X-Y plane. When the plunge milling is carried out, the cutting edge of the milling cutter is formed by overlapping the profiles of all the blades, the plunge milling depth can reach 250mm without vibration or distortion, the cutting motion direction of the cutter relative to a workpiece can be downward or upward, but downward cutting is generally more common. When the plunge milling inclined plane is formed, the plunge milling cutter performs composite motion along the Z-axis direction and the X-axis direction. In some processing occasions, a spherical milling cutter, a face milling cutter or other milling cutters can be used for various processing such as groove milling, face milling, inclined face milling, concave cavity milling and the like.

The existing impeller needs to be fixed in position during plunge milling, the clamping tool for fixing the impeller is simple at present, the impeller cannot be stably clamped during use, and fine position deviation of the impeller is easily caused in the machining process to influence the machining precision of the impeller.

Disclosure of Invention

The invention aims to: in order to solve the problems, an adjustable impeller clamp for impeller plunge milling is provided.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides an impeller anchor clamps with adjustable impeller plunge milling processing is used, includes the base, the higher authority of base is provided with the impeller seat of two symmetric distributions, the last arc constant head tank that has of impeller seat, two all be provided with the installation piece below the impeller seat, the spacing groove that can supply the installation piece to run through has on the base, the inside of base is provided with the horizontal pole that runs through the installation piece, the both ends of horizontal pole are provided with the spring, the inside of base still is provided with the drive assembly that the control both sides installation piece removed.

Preferably, the drive assembly includes rack bar I and rack bar II installed respectively on the installation piece of both sides and installs the pivot in the base inside, the outside of pivot is provided with the gear, the one end of pivot runs through the base and is connected with the carousel, be provided with locating part on the carousel, rack bar I and rack bar II are located the upper and lower both sides of gear respectively, and are connected with gear engagement, when guaranteeing that the pivot drives gear revolve, gear revolve drives rack bar I and rack bar two reverse relative movement, rack bar I and rack bar two drive the installation piece of both sides respectively to the center department that is close to or keeps away from the horizontal pole and remove.

Preferably, the positioning part comprises a positioning bolt, a threaded hole matched with the positioning bolt is formed in the rotary disc, the positioning bolt is connected with the rotary disc in a screwing mode through the threaded hole, an anti-slip block is arranged at the end portion of the positioning bolt, the positioning bolt is rotated to enable the positioning bolt to drive the anti-slip block to move towards the direction close to or far away from the base, when the anti-slip block moves towards the direction close to the base, the anti-slip block can be extruded with the front side of the side wall of the base, accordingly, large friction force is generated, the rotary disc is prevented from rotating, the position of the rotary disc is fixed, when the anti-slip block moves towards the direction far away from the base, the anti-slip block is separated from the side wall of the base, the rotary disc is not affected by the friction force, and when torsional force is applied to the rotary disc, the rotary disc can rotate.

Preferably, a centering shaft is further arranged at the center of the upper surface of the base, a positioning nut is screwed and connected to the top end of the centering shaft, a thread matched with the positioning nut is arranged on the centering shaft, and the positioning nut is screwed out of the thread through screwing of the positioning nut, so that the positioning nut is connected with and separated from the centering shaft, and the impeller is conveniently fixed in position from the upper surface of the impeller.

In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:

in this application, wear the shaft hole of impeller on the centering shaft, make the bottom of impeller get into in the arc constant head tank, the positioning bolt is screwed out to the outside, make non slipping spur and base break away from, under the spring action of spring, the extrusion installation piece moves to the center department of horizontal pole, the installation piece drives ratch one and ratch two relative movement this moment, under the effect of ratch one and ratch two, gear self-adaptation rotates, the installation piece drives the impeller seat and moves to the direction that is close to the impeller, then through manual fine tuning carousel, make the carousel drive gear revolve through the pivot, gear revolve drives ratch one and ratch two reverse relative movement, ratch one and ratch two drive the installation piece of both sides respectively and continue to move to the center department that is close to the horizontal pole, the installation piece drives the impeller seat of both sides and compresses tightly the impeller bottom, thereby clamp the fixing impeller bottom, then screw the positioning bolt, make the non slipping spur of its tip extrude the location with the base, thereby fix the position of carousel, then use the spanner to screw the location, make the below of the location nut compress tightly the impeller, thereby prevent to press from pressing from tightly the clamp the stability of impeller, the displacement from taking place in the milling process and milling the displacement.

Drawings

Fig. 1 is a front view structural diagram illustrating an adjustable impeller fixture for plunge milling of an impeller and a use method thereof according to an embodiment of the present invention;

fig. 2 is a front cross-sectional view schematically illustrating an adjustable impeller fixture for plunge milling of an impeller and a use method thereof according to an embodiment of the present invention;

fig. 3 shows a schematic top-view structural diagram of an adjustable impeller fixture for impeller plunge milling and a use method thereof according to an embodiment of the present invention.

Illustration of the drawings:

1. a base; 2. a limiting groove; 3. an impeller seat; 4. an arc-shaped positioning groove; 5. mounting a block; 6. a cross bar; 7. a spring; 8. a toothed bar I; 9. a second toothed bar; 10. a rotating shaft; 11. a gear; 12. a turntable; 13. positioning a bolt; 14. anti-skid blocks; 15. a centering shaft; 16. and (5) positioning a nut.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution:

an adjustable impeller fixture for plunge milling of an impeller and a using method thereof comprise a base 1, two impeller seats 3 which are symmetrically distributed are arranged on the base 1 and used for fixing the impeller, arc-shaped positioning grooves 4 are formed in the impeller seats 3, the bottoms of the impeller are clamped with the arc-shaped positioning grooves 4, mounting blocks 5 are arranged below the two impeller seats 3, limiting grooves 2 through which the mounting blocks 5 can penetrate are formed in the base 1, the mounting blocks 5 are connected with the limiting grooves 2 in a sliding mode, the limiting grooves 2 are symmetrically distributed on the base 1 relative to the base 1, cross rods 6 penetrating through the mounting blocks 5 are arranged inside the base 1, the mounting blocks 5 are connected with the cross rods 6 in a sliding mode outside the cross rods 6, the mounting blocks 5 can move horizontally and stably, springs 7 are arranged at two ends of the cross rods 6, the springs 7 are located between the mounting blocks 5 and the inner wall of the base 1, the mounting blocks 5 are extruded by the springs 7 to move towards the centers of the cross rods 6 under the elastic force of the springs 7, the mounting blocks 5 drive the impeller seats 3 to move, automatic rough adjustment of the impeller seats 3 is facilitated, and movement of the two sides of the mounting blocks 5 are also arranged inside the base 1.

Specifically, as shown in fig. 2, the driving assembly includes a rack bar 8 and a rack bar 9 respectively installed on the two side installation blocks 5 and a rotating shaft 10 installed inside the base 1, the outside of the rotating shaft 10 is provided with a gear 11, one end of the rotating shaft 10 penetrates through the base 1 and is connected with a turntable 12, a positioning part is arranged on the turntable 12, the rack bar 8 and the rack bar 9 are respectively located on the upper side and the lower side of the gear 11 and are connected with the gear 11 in a meshed manner, when the rotating shaft 10 is ensured to drive the gear 11 to rotate, the gear 11 rotates to drive the rack bar 8 and the rack bar 9 to move reversely and relatively, the rack bar 8 and the rack bar 9 respectively drive the installation blocks 5 on the two sides to move towards the center of the horizontal rod 6 or to keep away from the center of the horizontal rod 6.

Specifically, as shown in fig. 3, the positioning component includes a positioning bolt 13, a threaded hole adapted to the positioning bolt 13 is formed in the rotary plate 12, the positioning bolt 13 is rotatably connected to the rotary plate 12 through the threaded hole, an anti-slip block 14 is disposed at an end of the positioning bolt 13, and the positioning bolt 13 is rotated to enable the positioning bolt 13 to drive the anti-slip block 14 to move towards or away from the base 1, when the anti-slip block 14 moves towards the direction close to the base 1, the anti-slip block 14 can be pressed against a side wall of the base 1, so as to generate a large friction force, prevent the rotary plate 12 from rotating, and achieve position fixing of the rotary plate 12, and when the anti-slip block 14 moves towards the direction away from the base 1, the anti-slip block 14 is separated from the side wall of the base 1, so that the rotary plate 12 is not affected by friction resistance, and when a twisting force is applied to the rotary plate 12, the rotary plate can rotate.

Specifically, as shown in fig. 3, a centering shaft 15 is further disposed at the center of the upper surface of the base 1, a positioning nut 16 is screwed and connected to the top end of the centering shaft 15, a thread adapted to the positioning nut 16 is formed on the centering shaft 15, and the positioning nut 16 is screwed out by screwing the thread, so that the positioning nut 16 is connected with and separated from the centering shaft 15, and the impeller is conveniently fixed in position from the upper surface thereof.

In summary, in the adjustable impeller fixture for plunge milling and the using method thereof provided by the present embodiment, when in use, the shaft hole of the impeller is inserted into the centering shaft 15, so that the bottom of the impeller enters the arc-shaped positioning groove 4, the positioning bolt 13 is screwed out to the outside, so that the anti-slip block 14 is separated from the base 1, the mounting block 5 is pressed to move towards the center of the cross bar 6 under the elastic force of the spring 7, at this time, the mounting block 5 drives the first rack bar 8 and the second rack bar 9 to move relatively, under the action of the first rack bar 8 and the second rack bar 9, the gear 11 rotates adaptively, the mounting block 5 drives the impeller seat 3 to move towards the direction close to the impeller, and then the rotating disc 12 is manually fine-adjusted through the rotating shaft 10, so that the rotating disc 12 drives the gear 11 to rotate, the gear 11 rotates and drives the reverse relative movement of a rack bar 8 and a rack bar 9, the rack bar 8 and the rack bar 9 drive the installation blocks 5 on both sides to continue to move towards the center near the cross rod 6 respectively, the installation blocks 5 drive the impeller seats 3 on both sides to compress tightly the impeller bottom, thereby clamping and fixing the impeller bottom, then screwing the positioning bolt 13, the anti-skid block 14 at the end part is extruded and positioned with the base 1, thereby fixing the position of the turntable 12, then screwing the positioning nut 16 by using the wrench, so as to compress the impeller below the positioning nut 16, thereby stably clamping the impeller after completion, prevent the impeller from displacing in the milling process, and influence the processing precision.

The previous description of the embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides an impeller anchor clamps with adjustable impeller plunge milling processing is used, includes base (1), its characterized in that, the higher authority of base (1) is provided with two symmetric distribution's impeller seat (3), arc constant head tank (4) have on impeller seat (3), two all be provided with installation piece (5) below impeller seat (3), spacing groove (2) that can supply installation piece (5) to run through have on base (1), the inside of base (1) is provided with horizontal pole (6) that run through installation piece (5), the both ends of horizontal pole (6) are provided with spring (7), the inside of base (1) still is provided with the drive assembly that control both sides installation piece (5) removed.

2. The adjustable impeller clamp for milling and slotting the impeller according to claim 1, wherein the driving assembly comprises a first rack bar (8) and a second rack bar (9) which are respectively arranged on the two side mounting blocks (5) and a rotating shaft (10) which is arranged inside the base (1), a gear (11) is arranged outside the rotating shaft (10), one end of the rotating shaft (10) penetrates through the base (1) to be connected with a rotating disc (12), and a positioning part is arranged on the rotating disc (12).

3. The adjustable impeller clamp for impeller plunge milling according to claim 2, wherein the positioning component comprises a positioning bolt (13), the rotary table (12) is provided with a threaded hole matched with the positioning bolt (13), the positioning bolt (13) is screwed with the rotary table (12) through the threaded hole, and an anti-slip block (14) is arranged at the end of the positioning bolt (13).

4. The adjustable impeller clamp for plunge milling of the impeller according to claim 1, wherein a centering shaft (15) is further arranged at the center of the upper surface of the base (1), and a positioning nut (16) is screwed and connected to the top end of the centering shaft (15).

5. The use method of the adjustable impeller clamp for plunge milling machining of the impeller is characterized by comprising the following steps of:

s1, penetrating a shaft hole of an impeller on a centering shaft 15 to enable the bottom of the impeller to enter an arc-shaped positioning groove 4;

s2, screwing out the positioning bolt 13 to enable the anti-skidding block 14 to be separated from the base 1, extruding the mounting block 5 to move towards the center of the cross rod 6 under the action of the elastic force of the spring 7, driving the first toothed bar 8 and the second toothed bar 9 to move relatively by the mounting block 5 at the moment, driving the gear 11 to rotate in a self-adaptive mode under the action of the first toothed bar 8 and the second toothed bar 9, and driving the impeller seat 3 to move towards the direction close to the impeller by the mounting block 5;

s3, manually finely adjusting the rotary table 12 to enable the rotary table 12 to drive the gear 11 to rotate through the rotating shaft 10, the gear 11 rotates to drive the first toothed bar 8 and the second toothed bar 9 to reversely and relatively move, the first toothed bar 8 and the second toothed bar 9 respectively drive the mounting blocks 5 on the two sides to continuously move towards the center close to the cross rod 6, and the mounting blocks 5 drive the impeller seats 3 on the two sides to tightly press the bottoms of the impellers, so that the bottoms of the impellers are clamped and fixed;

s4, the positioning bolt 13 is screwed to enable the anti-skid block 14 at the end part of the positioning bolt to be extruded and positioned with the base 1, so that the position of the rotary table 12 is fixed, then the positioning nut 16 is screwed by using a wrench, so that the impeller is tightly pressed below the positioning nut 16, and the impeller is stably clamped.