Rhombic fir leaf root machining clamp with wing angle blade

Abstract

The invention discloses a rhombus blade fir leaf root machining clamp with a wing angle, and relates to the technical field of blade machining. The problems that an existing wedge-shaped pressing block is installed through a single bolt, the situation that the wedge-shaped pressing block rotates along the bolt exists, and consequently blade clamping is not stable are solved. The tool comprises a bottom plate, a first fixing piece, a second fixing piece and a fixing block, the bottom plate is sequentially provided with a blade root positioning block, a middle positioning block and a blade crown positioning block in the length direction, and the blade root positioning block, the middle positioning block and the blade crown positioning block are each provided with a supporting V-shaped face matched with a blade in shape; the top of the blade is fixed through the first fixing piece, the side face of the blade is fixed through the pressing block under the action of the second fixing piece, the pressing block is installed in the clamping groove, the pressing block can be limited in the clamping groove from three directions, the pressing block cannot rotate, operation is easier, the clamping time is shortened, and the clamping stability is improved.

Description

Technical Field

[0001] The invention relates to the technical field of blade processing, and in particular to a processing fixture for fir tree root of a rhombus-shaped blade with a wing angle. Background Art

[0002] For the rhombus-shaped fir leaf root blade with wing angle structure, when processing the blade root, the radial surface, steam channel and root, crown inlet and outlet sides of the blade have been accurately processed. In order to ensure the processing accuracy and consistency of the blade root, a special blade root fixture needs to be designed.

[0003] The existing clamp uses a wedge-shaped clamping block to clamp the side of the blade root for fixing. The wedge-shaped clamping block is installed by a single bolt. During processing, the wedge-shaped clamping block is easy to rotate along the bolt, resulting in unstable clamping of the blade and poor fixing effect.

[0004] In summary, the existing wedge-shaped clamping block is installed by a single bolt, and there is a situation where the wedge-shaped clamping block rotates along the bolt, resulting in the problem of unstable clamping of the blade. Summary of the invention

[0005] The purpose of the present invention is to solve the problem that the wedge-shaped clamping block is installed by a single bolt and the wedge-shaped clamping block rotates along the bolt, resulting in unstable blade clamping. Further, a diamond-shaped fir leaf root processing fixture with wing angle blade is provided.

[0006] The technical solution of the present invention is: a diamond-shaped wing-angle blade fir leaf root processing fixture, comprising: a bottom plate, a first fixing member, a second fixing member and a fixing block, the bottom plate is sequentially provided with a blade root positioning block, an intermediate positioning block and a leaf crown positioning block along the length direction, the blade root positioning block, the intermediate positioning block and the leaf crown positioning block are respectively provided with a supporting V-shaped surface adapted to the shape of the blade, when the blade is placed on the supporting V-shaped surface, the first fixing member is connected to the bottom plate and pressed against the top of the blade;

[0007] The fixing block is installed on the bottom plate and is located on the side of the blade. The side of the fixing block close to the blade has a slot arranged along the height direction. A pressing block for pressing the side of the blade is slidably arranged in the slot. When the pressing block is attached to the side of the blade, the second fixing piece is connected to the bottom plate and pressed on the top of the pressing block.

[0008] Furthermore, the fixing blocks include two fixed blocks symmetrically arranged along the width direction.

[0009] Furthermore, the second fixing member is a first bolt, and the first bolt passes through the clamping block and is threadedly connected to the base plate.

[0010] Furthermore, the clamping slot is a dovetail slot, and the pressing block has a dovetail boss that matches the dovetail slot.

[0011] Furthermore, a positioning groove is provided in the middle of the bottom plate along the length direction, and a positioning boss which is inserted into the positioning groove is provided on the middle positioning block and the leaf crown positioning block respectively.

[0012] Furthermore, the first fixing member is a first pressing plate arranged along the width direction, at least two threaded rods are arranged on the bottom plate along the width direction, the first pressing plate has a avoidance hole for passing the threaded rod, and nuts are threadedly connected on the threaded rod.

[0013] Furthermore, it also includes: a second pressing plate, which is arranged between the first pressing plate and the blade along the length direction.

[0014] Furthermore, at least one of the avoidance holes is a U-shaped hole.

[0015] Furthermore, the middle positioning block is detachably mounted on the base plate by a first bolt.

[0016] Furthermore, the blade crown positioning block is detachably mounted on the base plate by a second bolt.

[0017] Compared with the prior art, the present invention has the following effects:

[0018] 1. The present invention provides a diamond-shaped wing-angle blade fir leaf root processing fixture, wherein the first fixing member fixes the top of the blade, and the clamping block fixes the side of the blade under the action of the second fixing member. Since the clamping block is installed in a card slot, the card slot can restrict the clamping block from three directions, so that the clamping block cannot rotate, which is easier to operate, reduces the clamping time, and improves the clamping stability.

[0019] 2. The diamond-shaped wing-angle blade fir leaf root processing fixture provided by the present invention uses the intermediate positioning block as the design reference, and adjusts the axial and tangential drop by replacing the corresponding level of leaf crown accessories to meet the adaptability of root and crown positioning clamping.

[0020] 3. The diamond-shaped fir leaf root processing fixture with wing angle blades provided by the present invention realizes the forward and reverse versatility of the fixture by arranging fixing blocks in opposite directions and matching intermediate positioning blocks, thereby saving tooling design and manufacturing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the fir tree root processing fixture with diamond-shaped wing-angle blades of the present invention;

[0022] Figure 2 yes Figure 1 A top view of

[0023] Figure 3 yes Figure 1 The cross-sectional view with some parts removed at AA;

[0024] Figure 4 yes Figure 1 The cross-sectional view with some parts removed at the middle BB;

[0025] Figure 5 yes Figure 1 Enlarged view of the middle clamping block;

[0026] Figure 6 yes Figure 1 Magnified view of the fixing block.

[0027] In the figure: 1, bottom plate; 2, first fixing member; 3, second fixing member; 4, fixing block; 5, middle positioning block; 6, blade crown positioning block; 7, supporting V-shaped surface; 8, slot; 9, clamping block; 10, dovetail boss; 11, positioning groove; 12, positioning boss; 13, threaded rod; 14, avoidance hole; 15, nut; 16, second pressure plate. DETAILED DESCRIPTION

[0028] Specific implementation method 1: Combination Figures 1 to 4 Describe this embodiment, this embodiment includes a base plate 1, a first fixing member 2, a second fixing member 3 and a fixing block 4, the base plate 1 is provided with a blade root positioning block, an intermediate positioning block 5 and a blade crown positioning block 6 in sequence along the length direction, the blade root positioning block, the intermediate positioning block 5 and the blade crown positioning block 6 are respectively provided with a supporting V-shaped surface 7 adapted to the shape of the blade, when the blade is placed in the supporting V-shaped surface 7, the first fixing member 2 is connected to the base plate 1 and pressed against the top of the blade, the fixing block 4 is installed on the base plate 1 and is located on the side of the blade, the fixing block 4 is close to the blade. A side of the fixing block 4 is provided with a groove 8 arranged along the height direction, a pressing block 9 for pressing against the side of the blade is slidably provided in the groove 8, the pressing block 9 slides up and down in the groove 8, when the pressing block 9 is attached to the side of the blade, the second fixing member 3 is connected to the base plate 1 and pressed against the top of the pressing block 9, so that the pressing block 9 fixes the side of the blade.

[0029] In the diamond-shaped wing-angle blade fir leaf root processing fixture of this embodiment, the first fixing member 2 fixes the top of the blade, and the clamping block 9 fixes the side of the blade under the action of the second fixing member 3. Since the clamping block 9 is installed in the slot 8, the slot 8 can restrict the clamping block 9 from three directions, making it impossible for the clamping block 9 to rotate, which is easier to operate, reduces the clamping time, and improves the clamping stability.

[0030] Specific implementation method 2: Combination Figure 2This embodiment is described. The difference between this embodiment and the first embodiment is that the fixing block 4 has two symmetrically arranged along the width direction, and the pressing block 9 can be installed in the card slot 8 of one of the fixing blocks 4 to fix the side of the blade, so that the clamp can be used in both the forward and reverse directions, saving the tooling design and manufacturing costs. The other components and connection relationships are the same as those of the first embodiment.

[0031] Specific implementation method three: Combination Figure 2 This embodiment is described. The difference between this embodiment and the second embodiment is that the second fixing member 3 is a first bolt, which passes through the clamping block 9 and is threadedly connected to the bottom plate 1. The bolt passes through the clamping block 9 from top to bottom. The bottom plate 1 has a threaded hole that matches the bolt. After the bolt is connected to the bottom plate 1, its top is tightly on the top surface of the clamping block 9, thereby fixing the clamping block 9 to prevent it from sliding along the slot 8, ensuring the fixing effect on the side of the blade. Other components and connection relationships are the same as those of the second embodiment.

[0032] Specific implementation method four: Combination Figure 5 , Figure 6 This embodiment is described. The difference between this embodiment and the first embodiment is that the slot 8 is a dovetail slot, and the pressing block 9 has a dovetail boss 10 that matches the dovetail slot. When the dovetail boss 10 is installed in the dovetail slot, the dovetail slot can restrict the dovetail boss 10 so that it can only move up and down, and the two will not automatically separate, and the connection effect is better. The other components and connection relationships are the same as those of the first embodiment.

[0033] Specific implementation method five: Combination Figures 2 to 4 This embodiment is described. The difference between this embodiment and the first embodiment is that the middle position of the bottom plate 1 has a positioning groove 11 arranged along the length direction, and the middle positioning block 5 and the leaf crown positioning block 6 are respectively provided with positioning bosses 12 inserted into the positioning groove 11. The positioning bosses 12 and the positioning grooves 11 cooperate with each other to facilitate the positioning of the middle positioning block 5 and the leaf crown positioning block 6, and the installation is more convenient. The other components and connection relationships are the same as those of the first embodiment.

[0034] Specific implementation method six: Combination Figure 1 , Figure 2This embodiment is described. The difference between this embodiment and the first embodiment is that the first fixing member 2 is a first pressure plate arranged along the width direction. At least two threaded rods 13 are arranged on the bottom plate 1 along the width direction. The first pressure plate has a position avoidance hole 14 for passing the threaded rod 13. The threaded rod 13 is threadedly connected with a nut 15. In this embodiment, the number of the threaded rods 13 is two, and the number of the position avoidance holes 14 is also two. The nut 15 is located above the first pressure plate. The nut 15 is rotated so that the nut 15 is pressed against the top of the first pressure plate, thereby fixing the top of the blade. Other components and connection relationships are the same as those of the first embodiment.

[0035] Specific implementation method seven: Combination Figure 1 , Figure 2 This embodiment is described. The difference between this embodiment and the sixth embodiment is that it also includes a second pressing plate 16, which is arranged between the first pressing plate and the blade along the length direction. The second pressing plate 16 can increase the fixing range of the blade, so that the blade can also be fixed along the length direction, with a larger fixing area and better stability. Other components and connection relationships are the same as those of the sixth embodiment.

[0036] Specific implementation method eight: Combination Figure 2 This embodiment is described. The difference between this embodiment and the sixth embodiment is that at least one avoidance hole 14 is a U-shaped hole with an opening, which is convenient for the installation and adjustment of the first pressing plate and more flexible in use. The other components and connection relationships are the same as those of the sixth embodiment.

[0037] Specific implementation method nine: Combination Figure 3 This embodiment is described. The difference between this embodiment and the first embodiment is that the intermediate positioning block 5 is detachably mounted on the base plate 1 by a second bolt, and the second bolt passes through the base plate 1 upwards and is threadedly connected to the intermediate positioning block 5. The intermediate positioning block 5 can be flexibly disassembled, and later maintenance is more convenient. The intermediate positioning block 5 extends the blade root positioning end on the positioning side to increase the positioning area, improve the positioning accuracy, and the stability of the cutting process. The other components and connection relationships are the same as any one of the first to eighth embodiments.

[0038] Specific implementation method ten: Combination Figure 4 This embodiment is described. The difference between this embodiment and the first embodiment is that the blade crown positioning block 6 is detachably mounted on the bottom plate 1 by a third bolt, and the third bolt passes through the bottom plate 1 upwards and is threadedly connected to the blade crown positioning block 6. The blade crown positioning block 6 can be flexibly disassembled, and later maintenance is more convenient. The blade crown positioning block 6 has a positioning pin hole drilled on the side positioning inclined surface to facilitate the positioning of the blade. The other components and connection relationships are the same as any one of the first to eighth embodiments.

[0039] How to use this implementation:

[0040] 1. Place the blade on the base plate 1, then install the clamping block 9 in the slot 8, and move the clamping block 9 to fit the side of the blade. Then pass the first bolt downward through the clamping block 9 and thread it with the base plate 1 to fix the clamping block 9 to prevent it from sliding up and down in the slot 8, thereby ensuring the fixing effect of the side of the blade.

[0041] 2. First place the second pressure plate 16 on the top of the blade along the length direction, then place the first pressure plate on the top of the second pressure plate 16 along the width direction, and then rotate the nut 15 to move the nut 15 downward along the threaded rod 13 and press on the top of the first pressure plate to fix the top surface of the blade.

[0042] The content of the present invention is not limited to the content of the above-mentioned embodiments. The combination of one or several specific embodiments can also achieve the purpose of the invention.

Claims

1. A fixture for processing the root of a fir tree with a rhombus-shaped blade with a wing angle, comprising: A base plate (1), a first fixing member (2), a second fixing member (3) and a fixing block (4), wherein the base plate (1) is provided with a blade root positioning block, an intermediate positioning block (5) and a blade crown positioning block (6) in sequence along the length direction, and the blade root positioning block, the intermediate positioning block (5) and the blade crown positioning block (6) are respectively provided with a supporting V-shaped surface (7) adapted to the shape of the blade, and when the blade is placed on the supporting V-shaped surface (7), the first fixing member (2) is connected to the base plate (1) and pressed against the top of the blade; The invention is characterized in that the fixing block (4) is mounted on the base plate (1) and is located on the side of the blade, and the fixing block (4) has a slot (8) arranged along the height direction on a side close to the blade, and a pressing block (9) is slidably arranged in the slot (8) for pressing against the side of the blade, and when the pressing block (9) is in contact with the side of the blade, the second fixing member (3) is connected to the base plate (1) and pressed against the top of the pressing block (9).

2. A fixture for processing the root of a fir tree with a rhombus-shaped blade with a wing angle according to claim 1, characterized in that: The fixing blocks (4) have two fixed blocks which are symmetrically arranged along the width direction.

3. A fixture for processing the root of a fir tree with a rhombus-shaped blade with a wing angle according to claim 2, characterized in that: The second fixing member (3) is a first bolt, which passes through the clamping block (9) and is threadedly connected to the base plate (1).

4. A fixture for processing the root of a fir tree with a rhombus-shaped blade with a wing angle according to claim 1, characterized in that: The clamping groove (8) is a dovetail groove, and the pressing block (9) has a dovetail boss (10) that matches the dovetail groove.

5. The fixture for processing the root of a fir tree with a rhombus-shaped blade with a wing angle according to claim 1, characterized in that: The bottom plate (1) has a positioning groove (11) arranged in the middle position along the length direction, and the middle positioning block (5) and the leaf crown positioning block (6) are respectively provided with positioning bosses (12) inserted into the positioning groove (11).

6. A fixture for processing the root of a fir tree with a rhombus-shaped blade with a wing angle according to claim 1, characterized in that: The first fixing member (2) is a first pressing plate arranged along the width direction, at least two threaded rods (13) are arranged on the base plate (1) along the width direction, the first pressing plate has a avoidance hole (14) for passing the threaded rods (13), and nuts (15) are threadedly connected to the threaded rods (13).

7. A fixture for processing the root of a fir tree with a rhombus-shaped blade with a wing angle according to claim 6, characterized in that: Also includes: A second pressing plate (16) is arranged between the first pressing plate and the blade along the length direction.

8. The fixture for processing the root of a fir tree with a diamond-shaped blade with a wing angle according to claim 6, characterized in that: At least one of the avoidance holes (14) is a U-shaped hole.

9. A fixture for processing the root of a fir tree with a rhombus-shaped blade with a wing angle according to any one of claims 1 to 8, characterized in that: The middle positioning block (5) is detachably mounted on the base plate (1) via a second bolt.

10. A fixture for processing the root of a fir tree with a diamond-shaped blade with a wing angle according to any one of claims 1 to 8, characterized in that: The blade crown positioning block (6) is detachably mounted on the base plate (1) via a third bolt.

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