A double-shaft blade blank machining allowance detection tool

Abstract

The utility model discloses a kind of detection toolings of machining allowance of double-shaft blade blank, it is related to detection tooling field, including base, clamping support mechanism is provided on the base, the clamping support mechanism is used to clamping support blank, limit blank radial movement;Top mechanism is slidably connected on the base, the top mechanism is used to along blank axis and top blank;Resting piece is provided on the base, the resting piece is located between clamping support mechanism and top mechanism, for the profile of blank;It also includes measuring plate, the measuring plate has first detection edge and second detection edge, first detection edge has the standard profile of blank, for the profile of blank;Second detection edge is straight line edge, for resting on base surface, base surface is plane.The utility model carries out clamping to double-shaft blade blank, and it is convenient for allowance check to blade profile.

Description

Technical Field

[0001] This utility model relates to the field of inspection tooling, and in particular to an inspection tooling for the machining allowance of biaxial blade blanks. Background Technology

[0002] After rough milling, the blanks of biaxial die-forged stationary blades need to be inspected for profile allowance. The inspection method is mostly a three-axis sampling method. However, this three-axis sampling method is limited by production cycle and economic efficiency, and cannot perform full inspection of a large number of blades. Therefore, it often fails to detect uneven machining allowance of the inner back arc profile of the blank. This leads to the five-axis finish milling process being affected by uneven machining allowance of the blank, resulting in tool chipping or the presence of black skin on the forging after finish machining. Utility Model Content

[0003] The purpose of this utility model is to provide a tooling for detecting the machining allowance of biaxial blade blanks, which clamps the biaxial blade blanks to facilitate the inspection of the allowance of the blade profile.

[0004] The technical solution adopted by this utility model is as follows: A tooling for detecting the machining allowance of a biaxial blade blank includes a base, on which a clamping and supporting mechanism is provided for clamping and supporting the blank and restricting the radial movement of the blank; a tightening mechanism is slidably connected to the base for tightening the blank along the blank axis; a backing member is provided on the base, located between the clamping and supporting mechanism and the tightening mechanism, for abutting against the profile surface of the blank; and a measuring plate is also included, which has a first detection edge and a second detection edge. The first detection edge has the standard profile line of the blank and is used to abut against the profile surface of the blank; the second detection edge is a straight edge and is used to abut against the surface of the base, the surface of the base being a plane.

[0005] Furthermore, the clamping support mechanism includes a clamping seat and a clamping plate. The clamping seat has a first semi-circular groove. The clamping plate is rotatably connected to the clamping seat, and the plane of rotation of the clamping plate is not parallel to the axial direction of the first semi-circular groove. The clamping plate has a second semi-circular groove. After the first semi-circular groove and the second semi-circular groove are engaged, a clamping hole is formed. This clamping hole is used to clamp and support the shaft located at one end of the blank. A clamping locking mechanism is provided between the clamping seat and the clamping plate to maintain the engagement state of the first semi-circular groove and the second semi-circular groove.

[0006] Furthermore, the clamping and locking mechanism includes a first screw hole on the clamping seat and a constraint part on the clamping plate. The clamping plate and the clamping seat are engaged by a screw passing through the constraint part and connecting to the first screw hole.

[0007] Furthermore, the base is provided with a sliding groove, the travel direction of which is parallel to the axis of the clamping hole; the clamping mechanism is slidably connected to the sliding groove.

[0008] Furthermore, the tightening mechanism includes a tightening seat and a pin, the pin being fixedly connected to the tightening seat and the tightening seat being slidably connected to the slide groove; a tightening locking mechanism for locking the position of the tightening seat is provided between the tightening seat and the slide groove.

[0009] Furthermore, the top-tightening locking mechanism includes a locking hole provided on the top-tightening seat and a plurality of second screw holes opened on the base. The plurality of second screw holes are arranged along the travel direction of the slide groove. After the screw passes through the locking hole, it is connected to the second screw holes to lock the top-tightening seat.

[0010] Furthermore, the end of the abutment member used to abut the blank is configured as a hemispherical shape.

[0011] Furthermore, the mounting position of the abutment on the base is close to the clamping support mechanism.

[0012] Furthermore, the base is provided with at least two sets of detection abutment groups for the measuring plate to abut against, each detection abutment group including at least two abutment pins, the distribution direction of the abutment pins in each detection abutment group being perpendicular to the moving direction of the clamping mechanism; the axis of each abutment pin being perpendicular to the surface of the base.

[0013] Furthermore, the first detection edge and the second detection edge on the measuring plate are adjacent edges.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are: This invention achieves rapid positioning of the blank through a clamping support mechanism, a tightening mechanism, and abutment components. Then, by having the first detection edge of the measuring plate abut against the blank's profile surface and the second detection edge abut against the base surface, the light transmittance between the measuring plate and the blank's profile surface, and between the measuring plate and the base surface, is measured. This comprehensive measurement obtains the profile allowance data, enabling rapid acquisition of profile allowance data to determine whether it meets the finishing conditions. This facilitates full inspection of large batches of blades, effectively screening out blades with uneven profile allowances and avoiding a series of subsequent problems. Attached Figure Description

[0015] This utility model will be described by way of example and with reference to the accompanying drawings, wherein: Figure 1 This is a schematic diagram of the structure of this utility model after the blank is installed; The markings in the diagram are: 1-base; 11-slide groove; 12-second screw hole; 2-tightening seat; 3-ejector pin; 31-locking hole; 4-abutting part; 5-clamping seat; 51-first screw hole; 6-clamping plate; 61-constraint part; 7-measuring plate; 8-abutting pin; 9-blank. Detailed Implementation

[0016] In the description of this specification, it should be noted that if terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," or "outer" appear to 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 is in use, they are only for the convenience of describing this specification and simplifying the description, and do not indicate or imply that the device or component 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 this specification.

[0017] Furthermore, the use of terms such as "horizontal" and "vertical" in this specification does not imply that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0018] In the description of this specification, it should also be noted that, unless otherwise expressly specified and limited, the terms “set up,” “install,” “connect,” and “link” should be interpreted broadly. For example, a link can be a fixed link, a detachable link, or an integral link; it can be a mechanical link or an electrical link; it can be a direct link or an indirect link through an intermediate medium; it can be a connection within two components.

[0019] Example 1 like Figure 1 As shown, a fixture for detecting the machining allowance of a biaxial blade blank includes a base 1, on which a clamping and supporting mechanism is provided to clamp and support the blank 9 and restrict the radial movement of the blank 9; a clamping mechanism is slidably connected to the base 1 to clamp the blank 9 along its axis; a stop 4 is provided on the base 1 between the clamping and supporting mechanism and the clamping mechanism to abut against the profile of the blank 9; and a measuring plate 7, which has a first detection edge and a second detection edge. The first detection edge has the standard profile of the blank 9 and abuts against the profile of the blank 9; the second detection edge is a straight edge and abuts against the surface of the base 1, which is a plane.

[0020] In this embodiment, the positioning of the blank 9 is achieved by the cooperation of the clamping support mechanism, the tightening mechanism, and the abutment 4. Specifically, the clamping support mechanism clamps and supports the shaft at one end of the blank 9, restricting the radial movement of the blank 9; the tightening mechanism abuts the shaft at the other end of the blank 9, pressing the blank 9 against the clamping support mechanism, restricting the axial movement of the blank 9; together with the constraint of the abutment 4 on the circumferential rotation of the blade around its own axis, the blank 9 is positioned.

[0021] After positioning the blank 9, the first detection edge on the measuring plate 7 abuts against the profile surface of the blank 9, and the second detection edge abuts against the surface of the base 1. The amount of light transmitted between the measuring plate 7 and the profile surface of the blank 9, and between the measuring plate 7 and the surface of the base 1, is measured respectively. The remaining amount of the profile is obtained in a comprehensive manner, so as to quickly collect the remaining amount data of the profile and determine whether it meets the finishing conditions. This facilitates the full inspection of a large number of blades, effectively screens out blades with uneven profile remaining amount, and avoids a series of subsequent problems.

[0022] Example 2 Based on Example 1, further feasible implementation methods are proposed.

[0023] In one feasible implementation, the clamping support mechanism includes a clamping seat 5 and a clamping plate 6. The clamping seat 5 has a first semi-circular groove. The clamping plate 6 is rotatably connected to the clamping seat 5, and the plane of rotation of the clamping plate 6 is not parallel to the axial direction of the first semi-circular groove. The clamping plate 6 has a second semi-circular groove, and the first semi-circular groove and the second semi-circular groove are engaged to form a clamping hole, which is used to clamp and support a shaft located at one end of the blank 9. A clamping locking mechanism is provided between the clamping seat 5 and the clamping plate 6 to maintain the engagement state of the first semi-circular groove and the second semi-circular groove. The specific process of installing the blank 9 in the clamping support mechanism is as follows: Rotate the clamping plate 6 to open the clamping hole; place the blank 9 in the first semi-circular groove, that is, place the shaft at one end of the blank 9 in the first semi-circular groove, and then rotate the clamping plate 6 to make the second semi-circular groove engage with the first semi-circular groove to form a clamping hole surrounding the shaft; then lock the clamping seat 5 and the clamping plate 6 through the clamping locking mechanism to complete the installation of the blank 9 on the clamping support mechanism.

[0024] Furthermore, the clamping and locking mechanism includes a first screw hole 51 on the clamping seat 5 and a constraint part 61 on the clamping plate 6. The clamping plate 6 and the clamping seat 5 are clamped together by a screw passing through the constraint part 61 and connecting to the first screw hole 51. The rotation of the clamping plate 6 is limited by a screw threaded connection with the clamping seat 5, thereby locking the clamping support mechanism.

[0025] It should be noted that the constraint part 61 can be a U-shaped groove or a through hole.

[0026] In one feasible implementation, the base 1 is provided with a sliding groove 11, the travel direction of which is parallel to the axis of the clamping hole; the clamping mechanism is slidably connected to the sliding groove 11 to realize the sliding connection between the clamping mechanism and the base 1, and the sliding direction can be along the axis of the clamping hole, that is, to realize the clamping of the blank 9 along the axis of the blank 9.

[0027] For the clamping mechanism, one feasible implementation is that the clamping mechanism includes a clamping seat 2 and a ejector pin 3. The ejector pin 3 is fixedly connected to the clamping seat 2, and the clamping seat 2 is slidably connected to the slide groove 11. A clamping locking mechanism for locking the position of the clamping seat 2 is provided between the clamping seat 2 and the slide groove 11. The blank 9 is axially clamped by the clamping seat 2 sliding in the slide groove 11.

[0028] Furthermore, the tightening and locking mechanism includes a locking hole 31 on the tightening seat 2 and a plurality of second screw holes 12 on the base 1. The plurality of second screw holes 12 are arranged along the travel direction of the slide groove 11. The tightening seat 2 is locked by connecting the screw through the locking hole 31 to the second screw hole 12. The sliding of the tightening seat 2 is limited by the screw threaded connection with the base 1, thereby locking the tightening mechanism.

[0029] Example 3 Based on Examples 1-2, further feasible implementation methods are proposed.

[0030] In one feasible implementation, the end of the abutment 4 used to abut against the blank 9 is configured as a hemispherical shape to avoid scratching the surface of the blank 9 when the abutment 4 abuts against the blank 9.

[0031] In one feasible implementation, the mounting position of the abutment 4 on the base 1 is close to the clamping support mechanism. The abutment 4 can be used as the detection abutment group in the following text, so that the measuring plate 7 can be used to detect the surface near the clamping support mechanism on the surface.

[0032] In one feasible implementation, the base 1 is provided with at least two sets of detection abutment groups for the measuring plate 7 to abut against. The detection abutment group includes at least two abutment pins 8. The distribution direction of the abutment pins 8 in each detection abutment group is perpendicular to the moving direction of the clamping mechanism. The axis of each abutment pin 8 is perpendicular to the surface of the base 1.

[0033] Furthermore, the first detection edge and the second detection edge on the measuring plate 7 are adjacent edges.

[0034] According to the description in Example 1, "by having the first detection edge on the measuring plate 7 abut against the surface of the blank 9 and the second detection edge abut against the surface of the base 1, the amount of light transmitted between the measuring plate 7 and the surface of the blank 9 and between the measuring plate 7 and the surface of the base 1 are measured respectively, and the allowance of the profile is obtained by combining the measurements." More specifically, the amount of light transmitted between the measuring plate 7 and the surface of the blank 9 and the amount of light transmitted between the measuring plate 7 and the surface of the base 1 are superimposed, and the result of the superposition is the allowance of the profile at that cross-section.

[0035] It should be noted that, under normal circumstances, there are two sets of detection abutment groups. Combined with the description in the above implementation method that "the installation position of the abutment 4 on the base 1 is close to the clamping support mechanism", the profile allowance of the cross section at the upper, middle and lower positions of the blank 9 can be detected, and it can be determined whether the finishing conditions are met.

[0036] To further explain, each detection abutment group has two abutment pins 8 to improve the stability of the measuring plate 7 abutting. At the same time, the two features that "the distribution direction of the abutment pins 8 in each detection abutment group is perpendicular to the moving direction of the clamping mechanism" and "the axis of each abutment pin 8 is perpendicular to the surface of the base 1" ensure that the measuring plate 7 abuts against the blank 9 surface in an attitude perpendicular to the axis of the blank 9, while also ensuring that the measuring plate 7 is perpendicular to the surface of the base 1.

[0037] This invention is not limited to the specific embodiments described above. This invention extends to any new feature or combination disclosed in this specification, as well as any new method or process step or combination disclosed herein.

Claims

1. A tooling for detecting machining allowance of biaxial blade blanks, characterized in that: The system includes a base (1) on which a clamping support mechanism is provided. The clamping support mechanism is used to clamp and support the blank (9) and restrict the radial movement of the blank (9). A tightening mechanism is slidably connected to the base (1). The tightening mechanism is used to tighten the blank (9) along the axis of the blank (9). An abutment (4) is provided on the base (1). The abutment (4) is located between the clamping support mechanism and the tightening mechanism and is used to abut against the profile of the blank (9). The system also includes a measuring plate (7). The measuring plate (7) has a first detection edge and a second detection edge. The first detection edge has the profile of the blank (9) and is used to abut against the profile of the blank (9). The second detection edge is a straight edge, used to abut against the surface of the base (1), and the surface of the base (1) is a plane.

2. The testing fixture according to claim 1, characterized in that: The clamping support mechanism includes a clamping seat (5) and a clamping plate (6). The clamping seat (5) has a first semi-circular groove. The clamping plate (6) is rotatably connected to the clamping seat (5), and the plane of rotation of the clamping plate (6) is not parallel to the axial direction of the first semi-circular groove. The clamping plate (6) has a second semi-circular groove. The first semi-circular groove and the second semi-circular groove are engaged to form a clamping hole, which is used to clamp and support the shaft located at one end of the blank (9). A clamping locking mechanism is provided between the clamping seat (5) and the clamping plate (6) to keep the first semi-circular groove and the second semi-circular groove engaged.

3. The testing fixture according to claim 2, characterized in that: The clamping and locking mechanism includes a first screw hole (51) on the clamping seat (5) and a constraint part (61) on the clamping plate (6). The clamping plate (6) and the clamping seat (5) are engaged by a screw passing through the constraint part (61) and connecting it to the first screw hole (51).

4. The testing fixture according to claim 2, characterized in that: The base (1) is provided with a sliding groove (11), the travel direction of which is parallel to the axis of the clamping hole; the clamping mechanism is slidably connected to the sliding groove (11).

5. The testing fixture according to claim 4, characterized in that: The tightening mechanism includes a tightening seat (2) and a pin (3). The pin (3) is fixedly connected to the tightening seat (2), and the tightening seat (2) is slidably connected to the slide groove (11). A tightening locking mechanism for locking the position of the tightening seat (2) is provided between the tightening seat (2) and the slide groove (11).

6. The testing fixture according to claim 5, characterized in that: The top-tightening locking mechanism includes a locking hole (31) on the top-tightening seat (2) and a plurality of second screw holes (12) on the base (1). The plurality of second screw holes (12) are arranged along the travel direction of the slide groove (11). After the screw passes through the locking hole (31), it is connected to the second screw hole (12) to lock the top-tightening seat (2).

7. The testing fixture according to claim 1, characterized in that: The end of the abutment (4) used to abut against the blank (9) is configured as a hemispherical shape.

8. The testing fixture according to claim 1, characterized in that: The mounting position of the abutment (4) on the base (1) is close to the clamping support mechanism.

9. The testing fixture according to claim 1, characterized in that: The base (1) is provided with at least two sets of detection abutment groups for the measuring plate (7) to abut against. The detection abutment group includes at least two abutment pins (8). The distribution direction of the abutment pins (8) in each detection abutment group is perpendicular to the moving direction of the clamping mechanism. The axis of each abutment pin (8) is perpendicular to the surface of the base (1).

10. The testing fixture according to claim 1, characterized in that: The first detection edge and the second detection edge on the measuring plate (7) are adjacent edges.

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