A marking device, method and dovetail toothed blade

Abstract

This invention discloses a marking device, method, and dovetail tooth blade for dovetail tooth blades. Support blocks are hinged to the ends of two supports. When a drive mechanism drives two sliders to move towards or away from each other along the slide groove, it can cause the first and second supports to rotate around their intersection hinge point, further adjusting the relative distance between the two support blocks. This allows for the adaptation to dovetail tooth blades of different widths. Furthermore, since the two support blocks are hinged to the ends of the two supports, when dovetail teeth of different angles are placed between the two support blocks, each support block can swing independently around its hinge axis. This allows the support surface of the support block to adaptively conform to the pressure surface of the dovetail teeth at different angles. This eliminates the need to manufacture a large number of dedicated support devices for blades of different models and grades, reducing the types and number of marking devices and improving production efficiency and device adaptability.

Description

Technical Field

[0001] This invention belongs to the field of aero-engine blade processing technology, and relates to a marking device, method and dovetail tooth blade. Background Technology

[0002] Blades are core components of aero engines. Each blade has a corresponding file, which makes it easy for people to keep track of the status of each blade to ensure the safe and efficient operation of the entire engine. Especially during repair or troubleshooting, the position of each blade needs to be recorded. Therefore, each blade is permanently marked during the manufacturing process.

[0003] Currently, most compressor blade tenon structures are dovetail-shaped, and the optimal marking position is the bottom surface of the tenon. When using an automated marking machine, support devices are needed to support and fix the blades. Because the angle and width of the tenon teeth vary between different models and levels of blades, a large number of support devices need to be manufactured, leading to increased production and management costs. Summary of the Invention

[0004] The purpose of this invention is to solve the problems in the prior art and provide a marking device, method and dovetail tooth blade for dovetail tooth blades.

[0005] To achieve the above objectives, the present invention employs the following technical solution: A marking device for dovetail tenon blades includes a base with a groove on the base. A first slider and a second slider are disposed in the groove. The first slider and the second slider are connected to a driving mechanism, which drives the first slider and the second slider to move towards or away from each other along the groove. A first bracket is provided on the first slider, and a first support block is hinged to the end of the first bracket away from the first slider. A second bracket is provided on the second slider, and a second support block is hinged to the end of the second bracket away from the second slider. The first bracket and the second bracket are arranged crosswise and are hinged to each other at the intersection by a rotating shaft.

[0006] A further improvement of the present invention is that: The driving mechanism is a lead screw, which passes through the first slider and the second slider in sequence, and the operating end of the lead screw is located on the outside of the base.

[0007] The first slider and the second slider are threadedly connected to the lead screw. When the lead screw rotates clockwise or counterclockwise, the first slider and the second slider move towards or away from each other along the slide groove.

[0008] In the first and second sliders, when one slider has a left-hand thread, the other slider has a right-hand thread.

[0009] A rocker arm is provided at the operating end of the lead screw.

[0010] A pin is provided at the intersection of the first bracket and the second bracket.

[0011] A first spring is provided between the first support block and the first bracket, and a second spring is provided between the second bracket and the second support block.

[0012] One end of the first spring is connected to the side wall of the first bracket near the first support block, and the other end is connected to the first support block; One end of the second spring is connected to the side wall of the second bracket near the second support block, and the other end is connected to the second support block.

[0013] A method for marking dovetail tooth blades of the marking device includes the following steps: Place the dovetail tenon blade to be marked between the first support block and the second support block; The first and second sliders are driven by the drive mechanism to move towards each other along the slide groove until the first and second support blocks gradually clamp the dovetail tooth blade to be marked, at which point the movement stops and the marking machine is used to mark the dovetail tooth blade to be marked.

[0014] A dovetail toothed blade, with content marking performed based on the aforementioned marking device.

[0015] Compared with the prior art, the present invention has the following beneficial effects: This invention discloses a marking device for dovetail tooth blades. A base is provided with a sliding groove, a first slider, a second slider, a driving mechanism, and a first and second support that are arranged intersectingly, forming a marking device for adjusting the spacing. Support blocks are hinged to the ends of the two supports. When the driving mechanism drives the two sliders to move towards or away from each other along the sliding groove, it can drive the first and second supports to rotate around their intersecting hinge point, further adjusting the relative distance between the two support blocks. This allows it to accommodate dovetail tooth blades of different widths. Furthermore, since the two support blocks are hinged to two... At the end of the bracket, when dovetail tenons of different angles and specifications are placed between two support blocks, each support block can swing independently around its hinge axis, so that the support surface of the support block adaptively fits the pressure surface of the dovetail tenon at different angles. This eliminates the need to manufacture a large number of special support devices for blades of different models and grades, reduces the types and number of marking devices, and improves production efficiency and device adaptability. When the blade is placed, under the action of the blade's own gravity, the pressure surfaces on both sides of the dovetail tenon maintain surface contact with the two support blocks respectively, which also avoids pressure damage defects caused by point contact or line contact of the pressure surface.

[0016] Furthermore, in this invention, the driving mechanism adopts a lead screw, which passes through the first slider and the second slider in sequence. The operating end of the lead screw is located outside the base, allowing the operator to easily rotate the lead screw from outside the base. The lead screw drives the two sliders to move along the slide groove, thereby adjusting the distance between the two support blocks.

[0017] Furthermore, in this invention, left-hand and right-hand threads are respectively provided in the two sliders, so that when the lead screw rotates, the two sliders will inevitably move synchronously in opposite directions, without the need for an additional reversing mechanism, and ensuring that the two sliders move equal distances, which is beneficial to the accuracy of the blade position during marking.

[0018] Furthermore, in this invention, a first spring is provided between the first support block and the first bracket, and a second spring is provided between the second bracket and the second support block, so that when the blade is not placed, the two support blocks can maintain a preset initial posture under the elastic force of their respective springs. The weight of the blade overcomes the elastic force of the springs, causing the support block to swing. The support surface of the support block and the pressure surface of the blade gradually come into contact, and the movement of the support block is stable during the contact process.

[0019] This invention discloses a method for marking dovetail tenons on blades. First, the blade to be marked is placed between two support blocks. Then, a driving mechanism drives two sliders to move towards each other, causing the support blocks to gradually clamp the blade. When dovetail tenons of different angles and specifications are placed between the two support blocks, each support block can swing independently around its hinge axis, allowing the support surface of the support block to adaptively conform to the pressure surface of the dovetail tenons at different angles. This eliminates the need to manufacture a large number of special support devices for blades of different models and grades, reducing the types and number of marking devices, improving production efficiency and the flexibility of device adaptation. After the blade is placed, under the action of the blade's own gravity, the pressure surfaces on both sides of the dovetail tenons maintain surface contact with the two support blocks, thus avoiding pressure damage defects caused by point contact or line contact. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 The dovetail tenon blade structure of the present invention Figure 1 ; Figure 2 The dovetail tenon blade structure of the present invention Figure 2 ; Figure 3 The dovetail tenon blade structure of the present invention Figure 3 ; Figure 4 This is a schematic diagram of the dovetail tenon blade markings of the present invention; Figure 5 This is a structural diagram of the marking device disclosed in this invention; Figure 6 The present invention discloses Figure 5 A magnified view of a portion of the image; Figure 7 This is a schematic diagram of the lead screw and slider assembly disclosed in this invention.

[0022] Wherein: 1-base; 2-lead screw; 3-first slider; 4-second slider; 5-locking nut; 6-first bracket; 7-second bracket; 8-first support block; 9-second support block; 10-second spring; 11-pin. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0025] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0026] In the description of the embodiments of the present invention, it should be noted that if terms such as "upper," "lower," "horizontal," or "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, terms such as "first" and "second" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] Furthermore, the use of the term "horizontal" does not imply that the component must be absolutely horizontal, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0028] In the description of the embodiments of the present invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific circumstances.

[0029] The present invention will now be described in further detail with reference to the accompanying drawings: See Figures 1 to 7 This invention discloses a marking device for dovetail tooth blades. The support device is adjusted according to the angle and width of the tooth pressure surface so that the marking surface is perpendicular to the marking equipment, thereby reducing the number of marking devices, shortening the production preparation cycle, and improving production efficiency.

[0030] See Figure 1 In this embodiment, the dovetail tenon blade structure consists of a dovetail tenon and a blade body directly connected, with the tenon's symmetrical plane forming an angle with the overlapping axis. The marking is located within the groove at the bottom of the tenon; after machining, the part name and other information unique to the part must be marked. See also... Figure 2 and Figure 3 This device utilizes the dovetail tenon's shape (wider at the top and narrower at the bottom) to prevent parts from falling off the support structure. It also uses the blade's own weight to maintain surface contact between the pressure surface and the support block, preventing pressure damage. The relative position of the two support blocks is adjusted by changing the bracket angle according to the tenon width. This is achieved through the following steps: The selected processing equipment is a CM3A computer-controlled marking machine. During processing, the marking machine and device are placed on the worktable. Vibration marking uses a multi-point approximation to arrange the text to be marked. The marking needle uses an impact method to create dot-like pits on the surface of the part. Because the stroke of the marking needle is fixed, the marking surface and the marking needle must be equidistant and perpendicular in real time; otherwise, the marking depth will be uneven, or the marking content may be lost. First, the width of the support is adjusted by shaking the lead screw arm. When the width of the two positioning blocks at the top of the support is close to the width of the tenon, the blade is placed into the support device so that the pressure surface of the tenon contacts the support block. The contact between the pressure surface of the tenon and the support block is observed. Based on the contact, the lead screw arm is finely adjusted to ensure that the blade and the support block are fully in contact. Then, the locking nut is turned to lock the lead screw. Finally, the position of the marking needle assembly is adjusted by the lead screw of the marking machine. After adjusting the marking needle to a position approximately 10mm away from the blade surface, batch marking processing can begin. Figure 4 The location shown.

[0031] In view of this, the following apparatus and method are disclosed in this embodiment.

[0032] Example 1 See Figures 5 to 7 The present invention discloses a marking device for dovetail tenon blades, including a base 1, a lead screw 2 with a rocker arm, a first slider 3, a second slider 4, a locking nut 5, a first bracket 6, a second bracket 7, a first support block 8, a second support block 9, a first spring, a second spring 10, and a pin 11.

[0033] The base 1 is the basic load-bearing component of this device. It has a plate-like structure and is made of cast iron or steel. A groove is formed on the top surface of the base 1, extending along its length. The first slider 3 and the second slider 4 are slidably disposed within this groove. The overall shape of the first slider 3 and the second slider 4 matches the groove, and an appropriate gap is maintained between them and the inner wall of the groove. This ensures smooth sliding of the sliders within the groove while preventing wobbling during sliding due to excessive gap. The top surfaces of the first slider 3 and the second slider 4 are higher than the upper surface of the base 1 to facilitate the mounting of other components on the sliders.

[0034] The first slider 3 and the second slider 4 are connected by a lead screw 2. The lead screw 2 is a long, threaded rod with its axis parallel to the extension direction of the slide groove. The lead screw 2 is divided into three sections along its axis: the middle section is a smooth rod, and the two side sections are threaded sections. The first slider 3 and the second slider 4 each have a through threaded hole, one of which is a left-hand thread and the other is a right-hand thread. When the first slider 3 has a left-hand thread, the second slider 4 has a right-hand thread; conversely, when the first slider 3 has a right-hand thread, the second slider 4 has a left-hand thread. The lead screw 2 passes through the threaded holes of the first slider 3 and the second slider 4 in sequence, with one end extending to the outside of the base 1 as the operating end. A rocker arm is fixedly installed at the operating end of the lead screw 2, extending radially along the lead screw 2. When the operator holds the rocker arm and rotates it, the lead screw 2 can rotate around its own axis. Because the internal threads of the two sliders rotate in opposite directions, when the lead screw 2 rotates clockwise, the two sliders move in opposite directions along the groove, i.e., towards each other or away from each other, depending on the rotation direction of the lead screw 2. Similarly, when the lead screw 2 rotates counterclockwise, the two sliders move in opposite directions or towards each other. Thus, simply rotating the rocker arm can synchronously drive the two sliders to move closer or further apart within the groove at equal intervals, achieving adjustment between the two sliders. A locking nut 5 is also provided near the operating end of the lead screw 2. The locking nut 5 is screwed onto the lead screw 2. After the operator adjusts the two sliders to the target position, rotating the locking nut 5 to make it press against the side wall of the base 1 locks the lead screw 2, preventing accidental rotation due to vibration or other reasons during use, thereby ensuring that the adjusted spacing remains stable during batch marking.

[0035] Furthermore, the first bracket 6 is mounted on the top surface of the first slider 3, and the second bracket 7 is mounted on the top surface of the second slider 4. Both the first bracket 6 and the second bracket 7 are elongated plate-like components, with their upper ends extending obliquely upwards. The first bracket 6 and the second bracket 7 are spatially intersecting, that is, viewed from the front of the base 1, the first bracket 6 and the second bracket 7 form an X-shaped intersection. At their intersection point, that is, in the middle of the first bracket 6 and the second bracket 7, a through hole is provided for the pin 11 to pass through, and the pin 11 passes through the through hole on the two brackets to hinge them together. The first bracket 6 and the second bracket 7 can rotate relative to each other around the pin 11, forming a cross-connection structure that can rotate relative to each other. When the two sliders move towards each other along the slide groove, the lower ends of the first bracket 6 and the second bracket 7 move closer to each other. Since the two brackets are constrained by the pin 11 at the intersection point, their upper ends also move closer to each other accordingly; conversely, when the two sliders move away from each other, the upper ends of the two brackets also move away from each other accordingly. Therefore, by driving the lead screw 2 to rotate, the distance between the upper ends of the two supports can be changed to accommodate dovetail tenons of different widths.

[0036] Furthermore, a first support block 8 is hinged to the upper end of the first bracket 6. Specifically, a mounting hole is provided at the upper end of the first bracket 6, and the first support block 8 is mounted in the mounting hole through a hinge shaft. The first support block 8 can swing freely relative to the first bracket 6 around the hinge shaft. The first support block 8 is block-shaped, and its surface facing the blade to be marked is the support surface, which is used to contact the pressure surface of the dovetail tenon. Since the first support block 8 can swing relative to the first bracket 6, when the pressure surface of the dovetail tenon with different angle specifications contacts the support surface of the first support block 8, the first support block 8 can automatically swing around its hinge shaft to a position where its support surface and pressure surface are completely in contact, thereby achieving adaptive angle adjustment. Similarly, a second support block 9 is hinged to the upper end of the second bracket 7. The second support block 9 is mounted to the upper end of the second bracket 7 through another hinge shaft, and the second support block 9 can swing freely relative to the second bracket 7 around this hinge shaft. The second support block 9 is also block-shaped, with its side facing the blade to be marked serving as the support surface. This support surface is used to contact the pressure surface on the other side of the dovetail tenon. The second support block 9 can also automatically swing to a fully fitted position according to the angle of the pressure surface it contacts. The shape and size of the support surfaces of the two support blocks are designed according to the standard specifications of the dovetail tenon pressure surface to ensure sufficient contact area and avoid pressure damage defects caused by insufficient contact area.

[0037] Furthermore, a first spring is provided between the first support block 8 and the first bracket 6. The first spring can be an elastic element such as a helical spring, torsion spring, or leaf spring. In this embodiment, the first spring is preferably a helical compression spring. One end of the first spring is connected to the side wall of the first bracket 6 near the first support block 8, and the other end of the first spring is connected to the side of the first support block 8 facing away from the support surface. When no blade is placed, the first spring keeps the first support block 8 in a preset initial posture. This initial posture makes the upper opening of the two support blocks larger, which facilitates the operator to smoothly place the blade between the two support blocks. Similarly, a second spring 10 is provided between the second support block 9 and the second bracket 7. The structure of the second spring 10 is the same as that of the first spring. One end of the second spring 10 is connected to the side wall of the second bracket 7 near the second support block 9, and the other end of the second spring 10 is connected to the side of the second support block 9 facing away from the support surface. When the blade is not in place, the second spring 10 keeps the second support block 9 in an initial symmetrical posture with the first support block 8. The support surfaces of the two support blocks form a tapered opening, wider at the top and narrower at the bottom, in this initial posture. The shape of this opening roughly matches the outline of the dovetail tenon. When the blade is placed between the two support blocks, the dovetail tenon of the blade moves downwards under its own weight. The pressure surfaces on both sides of the tenon contact the support surfaces of the two support blocks and apply pressure. This pressure overcomes the spring force, causing the first support block 8 and the second support block 9 to swing around their respective hinge axes until the support surfaces of the two support blocks are completely in contact with the pressure surfaces on both sides of the tenon. During this process, the two springs provide a certain damping force, ensuring smooth movement of the support blocks during the swing. When the blade is removed from the device, the spring force of the two springs causes the two support blocks to automatically return to their respective initial postures.

[0038] In operation, the operator first shakes the rocker arm according to the width of the dovetail tenon of the blade to be marked, rotates the lead screw 2, and moves the first slider 3 and the second slider 4 along the slide groove, thereby driving the first support 6 and the second support 7 to rotate around the pin 11, adjusting the relative distance between the first support block 8 and the second support block 9. When the distance between the two support blocks is close to the width of the tenon of the blade to be marked, the blade is placed between the two support blocks. Under the action of the blade's own gravity, the dovetail tenon moves downward, and the pressure surfaces on both sides of the tenon push the first support block 8 and the second support block 9 to swing, the spring is further compressed, and the support surface of the support block gradually comes into contact with the pressure surface of the tenon. At this time, the operator continues to fine-tune the rocker arm so that the two support blocks and the pressure surface of the tenon reach a state of complete surface contact, and then rotates the locking nut 5 to lock the lead screw 2, fixing the state of the entire device, and the batch marking operation of this model of blade can begin.

[0039] The width of dovetail teeth of different widths can be adaptively adjusted through the cooperation of base 1, first slider 3, second slider 4, and lead screw 2; the horizontal movement of the slider is converted into the spacing change between the two support blocks through the cross-set and hinged first bracket 6 and second bracket 7; the adaptive fit of pressure surfaces at different angles is achieved through the first support block 8 and second support block 9 hinged to the ends of the brackets; and the posture maintenance and automatic reset of the support blocks are achieved through the first spring and second spring 10. The device can be used for marking support of dovetail tooth blades of different models and levels without replacing any parts.

[0040] Example 2 This embodiment discloses a method for marking dovetail tenon blades, including the following steps: Estimate the required distance between the first support block 8 and the second support block 9 based on experience. Then, grasp the rocker arm at the operating end of the lead screw 2 and rotate the rocker arm to rotate the lead screw 2. Driven by the lead screw 2, the first slider 3 and the second slider 4 move simultaneously towards each other or away from each other along the groove of the base 1.

[0041] Hold the blade to be marked with the dovetail tenon facing down, align it with the gap between the first support block 8 and the second support block 9, and put the blade in. As the two support blocks maintain the preset initial posture under the elastic force of the first spring and the second spring 10, the support surfaces of the two support blocks form a conical opening that is larger at the top and smaller at the bottom in the initial posture. The pressure surfaces on both sides of the dovetail tenon are in contact with the support surfaces of the first support block 8 and the second support block 9, respectively.

[0042] Fine-tune the rocker arm again to ensure that the first support block 8 and the second support block 9 are in complete surface contact with the blade pressure surface. Once it is confirmed that both support blocks are in complete contact with the blade pressure surface, rotate the locking nut 5 on the lead screw 2 to make the locking nut 5 abut against the side wall of the base 1 or the support seat of the lead screw 2, thereby locking the lead screw 2 and preventing it from rotating due to vibration during subsequent marking.

[0043] Finally, marking is performed using a marking machine.

[0044] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A marking device for dovetail toothed vanes, characterized in that, Includes a base (1), on which a sliding groove is provided, and a first slider (3) and a second slider (4) are provided in the sliding groove. The first slider (3) and the second slider (4) are connected to a driving mechanism, which is used to drive the first slider (3) and the second slider (4) to move towards each other or away from each other along the sliding groove. A first bracket (6) is provided on the first slider (3), and a first support block (8) is hinged to the end of the first bracket (6) away from the first slider (3). A second bracket (7) is provided on the second slider (4), and a second support block (9) is hinged to the end of the second bracket (7) away from the second slider (4). The first bracket (6) and the second bracket (7) are arranged crosswise and are hinged to each other at the intersection by a rotating shaft.

2. A marking device for dovetail toothed vanes according to claim 1, characterized in that The driving mechanism is a lead screw, which passes through the first slider (3) and the second slider (4) in sequence, and the operating end of the lead screw is located on the outside of the base (1).

3. A marking device for dovetail toothed vanes according to claim 2, characterized in that The first slider (3) and the second slider (4) are threadedly connected to the lead screw. When the lead screw rotates clockwise or counterclockwise, the first slider (3) and the second slider (4) move towards or away from each other along the slide groove.

4. A marking device for dovetail toothed vanes according to claim 3, characterized in that In the first slider (3) and the second slider (4), when one slider is provided with a left-hand thread, the other slider is provided with a right-hand thread.

5. A marking device for dovetail toothed vanes according to claim 2, characterized in that, A rocker arm is provided at the operating end of the lead screw.

6. A marking device for dovetail tooth blades according to claim 1, characterized in that, A pin (11) is provided at the cross connection of the first bracket (6) and the second bracket (7).

7. A marking device for dovetail tooth blades according to claim 1, characterized in that, A first spring is provided between the first support block (8) and the first bracket (6), and a second spring (10) is provided between the second bracket (7) and the second support block (9).

8. A marking device for dovetail tooth blades according to claim 7, characterized in that, One end of the first spring is connected to the side wall of the first bracket (6) near the first support block (8), and the other end is connected to the first support block (8). One end of the second spring (10) is connected to the side wall of the second bracket (7) near the second support block (9), and the other end is connected to the second support block (9).

9. A method for marking dovetail tooth blades based on the marking device of claim 1, characterized in that, Includes the following steps: Place the dovetail tenon blade to be marked between the first support block (8) and the second support block (9); The first slider (3) and the second slider (4) are driven by the drive mechanism to move towards each other along the groove until the first support block (8) and the second support block (9) gradually clamp the dovetail tooth blade to be marked, and then the movement stops. The dovetail tooth blade to be marked is marked by the marking machine.

10. A dovetail tenon blade, characterized in that, Content marking is performed using the marking device described in claim 1.

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