Large blade clamping and positioning device

Abstract

The utility model discloses a large blade clamping and positioning device, and belongs to machining tools. In order to solve the problem that the machined blade does not meet the machining requirement due to insufficient rigidity, non-uniform stress and no clamping force in the middle of the existing large blade. The tool comprises a bottom plate, a blade root molded line block, a blade crown molded line block, a jackscrew and a pressing plate assembly, and the blade root molded line block and the blade crown molded line block are arranged at the two ends of the upper surface of the bottom plate respectively and fixed through screws; the jackscrew is connected to the bottom plate in a threaded mode and located between the blade root molded line block and the blade crown molded line block. The blade root of the blade is placed on the upper surface of the blade root molded line block, the blade crown of the blade is placed on the upper surface of the blade crown molded line block, and the middle part of the blade abuts against the top of the jackscrew; the pressing plate assembly is installed on the bottom plate and pressed on the upper surface, close to the blade root, of the blade. The large blade machining device is mainly used for machining large blades.

Description

Technical Field

[0001] The utility model belongs to processing tooling, in particular to a large blade clamping and positioning device. Background Art

[0002] Due to process improvements, the root processing method of some large blades has been modified. The traditional pouring box reprocessing method has been abandoned and replaced with a large five-axis machine tool to first process the airway and the two sides and middle body of the blade root, and then use a special fixture to clamp and process the blade root tooth shape. However, since the designed clamp pressure plate is a full-length shape and thin, it lacks rigidity, the force is uneven, there is no clamping force in the middle, and the material is easily pressed out of indentations on both sides, resulting in the processed blades not meeting the processing requirements.

[0003] After the airway of the large blade is processed, the blade body becomes thin and long. If the clamping is not firm during processing, it is easy to cause material leakage and tool chattering. The root tooth shape has very strict requirements on smoothness and size, so the processed blades do not meet the processing requirements. Utility Model Content

[0004] In order to solve the above-mentioned technical problems, the utility model provides a large blade clamping and positioning device. When the blade is clamped by a blade tooling, the rigidity of the blade is more sufficient, and deformation, material leakage and tool chattering will not occur during the processing, thereby ensuring the quality of blade processing.

[0005] The technical solution adopted by the utility model to solve the above technical problems is:

[0006] A large blade clamping and positioning device, the device comprises a base plate, a blade root profile block, a blade crown profile block, a top screw and a pressure plate assembly, the blade root profile block and the blade crown profile block are respectively arranged at the two ends of the upper surface of the base plate and fixed by screws; the top screw is screwed on the base plate and is located between the blade root profile block and the blade crown profile block; the blade root is placed on the upper surface of the blade root profile block, the blade crown is placed on the upper surface of the blade crown profile block, and the middle part of the blade abuts against the top of the top screw; the pressure plate assembly is installed on the base plate and pressed on the upper surface of the blade near the blade root.

[0007] Preferably, the blade crown profile block is bent inwardly on one side facing the blade, and the blade crown of the blade abuts against and fits the bent surface of the blade crown profile block.

[0008] Preferably, a threaded hole is formed at the bottom of the blade crown profile block, and a screw passes through the threaded hole on the bottom plate and is screwed into the threaded hole on the blade crown profile block.

[0009] Preferably, the blade root profile block is a cuboid, a threaded hole is formed at the bottom of the blade root profile block, and a screw passes through the threaded hole on the bottom plate and is screwed into the threaded hole on the blade root profile block.

[0010] Preferably, there are multiple top screws, and the multiple top screws are arranged along the direction from the blade root to the blade crown.

[0011] Preferably, the pressure plate assembly is designed as two groups, and the two groups of pressure plate assemblies are respectively arranged on both sides of the blade; each group of pressure plate assemblies includes a pressure plate, a stud and a nut, the stud is screwed on the base plate, the pressure plate is sleeved on the stud, and is pressed on the blade by spinning the nut downward.

[0012] Preferably, the pressing plate has a waist hole along its length direction, and the pressing plate is sleeved on the stud through the waist hole.

[0013] Preferably, the pressing plate is made of copper.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] In the present application, the blade is fixed under the support of the blade root profile block, the blade crown profile block and the top screw, and under the pressure of the pressure plate assembly, so that the rigidity of the blade is more sufficient, and deformation, material leakage and tool chattering will not occur during the processing, thereby ensuring the quality of blade processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] As a part of this application, the accompanying drawings are used to provide a further understanding of the present utility model.

[0017] Figure 1 It is a schematic diagram of the structure of the bottom of the base plate.

[0018] Figure 2 Schematic diagram of the structure of the blade clamped on the tooling.

[0019] Figure 3 Axonometric view of the pressure plate assembly pressing on the blade Figure 1 .

[0020] Figure 4 Axonometric view of the pressure plate assembly pressing on the blade Figure 2 .

[0021] Explanation of the reference numerals: 1-base plate; 2-blade root profile block; 3-blade crown profile block; 4-top screw; 5-pressure plate assembly; 501-pressure plate; 502-stud; 503-nut; 6-blade. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

[0023] See also Figure 1 , an embodiment of the present application provides a large blade clamping and positioning device, which includes a base plate 1, a blade root profile block 2, a blade crown profile block 3, a top screw 4 and a pressure plate assembly 5, wherein the blade root profile block 2 and the blade crown profile block 3 are respectively arranged at the two ends of the upper surface of the base plate 1 and are fixed by screws; the top screw 4 is screwed on the base plate 1 and is located between the blade root profile block 2 and the blade crown profile block 3; the root of the blade 6 is placed on the upper surface of the blade root profile block 2, the crown of the blade 6 is placed on the upper surface of the blade crown profile block 3, and the middle part of the blade 6 abuts against the top of the top screw 4; the pressure plate assembly 5 is installed on the base plate 1 and pressed on the upper surface of the blade 6 near the root position.

[0024] Furthermore, the blade crown profile block 3 is bent inwardly on one side facing the blade 6 , and the blade crown of the blade 6 abuts against the bending surface of the blade crown profile block 3 and fits with the bending surface of the blade crown profile block 3 .

[0025] Furthermore, a threaded hole is formed at the bottom of the blade crown profile block 3 , and a screw passes through the threaded hole on the bottom plate 1 and is screwed into the threaded hole on the blade crown profile block 3 .

[0026] Furthermore, the blade root profile block 2 is a rectangular parallelepiped, and a threaded hole is opened at the bottom of the blade root profile block 2 . The screw passes through the threaded hole on the base plate 1 and is screwed into the threaded hole on the blade root profile block 2 .

[0027] Furthermore, there are at least two top screws 4, and the multiple top screws 4 are arranged along the direction from the root of the blade 6 to the crown of the blade.

[0028] Furthermore, the pressure plate assembly 5 is designed to be two groups, and the two groups of pressure plate assemblies 5 are respectively arranged on both sides of the blade 6; each group of pressure plate assembly 5 includes a pressure plate 501, a stud 502 and a nut 503, the stud 502 is screwed on the base plate 1, the pressure plate 501 is sleeved on the stud 502, and is pressed on the blade 6 by the downward rotation of the nut 503.

[0029] Furthermore, the material of the pressing plate 501 is copper, and a waist hole is opened on the pressing plate 501 along its length direction, and the pressing plate 501 is sleeved on the stud 502 through the waist hole.

[0030] In this embodiment, the blade 6 is fixed under the support of the blade root profile block 2, the blade crown profile block 3 and the top screw 4, and under the pressure of the pressure plate assembly 5, so that the rigidity of the blade 6 is more sufficient, and deformation, material leakage and tool chattering will not occur during the processing, thereby ensuring the quality of the blade processing.

[0031] In this embodiment, due to the limited space on the fixture bottom plate, the clamping structure is improved to make the mechanism more rigid, the processing more reliable, and it is very convenient to use. It can ensure the stability of the blades during processing, so that the processed blades meet the ideal effect required by the process.

[0032] The following is a further description of the blade clamping process to further demonstrate the working principle and advantages of the utility model:

[0033] First, the blade root profile block 2 and the blade crown profile block 3 are placed on the base plate 1, and screws are passed through the threaded holes on the base plate 1 and screwed into the threaded holes on the blade root profile block 2 and the blade crown profile block 3 to fix the blade root profile block 2 and the blade crown profile block 3 to the base plate 1.

[0034] Secondly, the top screw 4 is screwed onto the bottom plate 1 , and then the root of the blade 6 is placed on the blade root profile block 2 , and the crown of the blade 6 is placed on the crown profile block 3 .

[0035] Next, the stud 502 in the pressure plate assembly 5 is screwed onto the bottom plate 1 , the pressure plate 501 is sleeved onto the stud 502 , the position of the pressure plate 501 is adjusted, and the pressure plate 501 is pressed onto the blade 6 by screwing down the nut 503 .

[0036] Finally, the top screw 4 is screwed again so that the top end of the top screw 4 abuts against the lower surface of the blade 6, thereby achieving stable fixation of the blade 6.

[0037] Although the present invention is described herein with reference to specific embodiments, it should be understood that these embodiments are merely examples of the principles and applications of the present invention. It should therefore be understood that many modifications may be made to the exemplary embodiments, and other arrangements may be designed without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that the features described in the various dependent claims and herein may be combined in a manner different from that described in the original claims. It may also be understood that the features described in conjunction with the individual embodiments may be used in other described embodiments.

Claims

1. A large blade clamping and positioning device, characterized in that: The device comprises a base plate (1), a blade root profile block (2), a blade crown profile block (3), a top screw (4) and a pressure plate assembly (5); the blade root profile block (2) and the blade crown profile block (3) are respectively arranged at two ends of the upper surface of the base plate (1) and fixed by screws; the top screw (4) is screwed on the base plate (1) and is located between the blade root profile block (2) and the blade crown profile block (3); the blade root of the blade (6) is placed on the upper surface of the blade root profile block (2), the blade crown of the blade (6) is placed on the upper surface of the blade crown profile block (3), and the middle part of the blade (6) abuts against the top of the top screw (4); the pressure plate assembly (5) is installed on the base plate (1) and pressed on the upper surface of the blade (6) near the blade root.

2. A large blade clamping and positioning device according to claim 1, characterized in that: The blade crown profile block (3) is bent inwardly on one side facing the blade (6), and the blade crown of the blade (6) abuts against the bending surface of the blade crown profile block (3) and fits the bending surface of the blade crown profile block (3).

3. A large blade clamping and positioning device according to claim 1, characterized in that: A threaded hole is formed at the bottom of the blade crown profile block (3); a screw passes through the threaded hole on the bottom plate (1) and is screwed into the threaded hole on the blade crown profile block (3).

4. A large blade clamping and positioning device according to claim 1, characterized in that: The blade root profile block (2) is a rectangular parallelepiped, and a threaded hole is opened at the bottom of the blade root profile block (2). The screw passes through the threaded hole on the bottom plate (1) and is screwed into the threaded hole on the blade root profile block (2).

5. A large blade clamping and positioning device according to claim 1, characterized in that: There are multiple top screws (4), and the multiple top screws (4) are arranged along the direction from the root to the crown of the blade (6).

6. A large blade clamping and positioning device according to claim 1, characterized in that: The pressure plate assembly (5) is designed to be two groups, and the two groups of pressure plate assemblies (5) are respectively arranged on both sides of the blade (6); each group of pressure plate assemblies (5) includes a pressure plate (501), a stud (502) and a nut (503), the stud (502) is screwed on the base plate (1), the pressure plate (501) is sleeved on the stud (502), and is pressed on the blade (6) by the downward rotation of the nut (503).

7. A large blade clamping and positioning device according to claim 6, characterized in that: The pressing plate (501) has a waist hole along its length direction, and the pressing plate (501) is sleeved on the stud (502) through the waist hole.

8. A large blade clamping and positioning device according to claim 6, characterized in that: The material of the pressing plate (501) is copper.

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