Rapid clamping mechanism for aero-engine blade grinding
By designing a rapid clamping mechanism for grinding aero-engine blades, and utilizing a combination of components such as support bases, bolts, clamping blocks, and adjusting rods, the problems of long clamping time and large errors in existing clamping mechanisms are solved, achieving a fast and secure clamping effect, and improving production efficiency and practicality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-05
- Publication Date
- 2026-03-27
AI Technical Summary
Existing clamping mechanisms require multiple clamping and datum alignment steps when grinding aero-engine blades, resulting in long processing times, large errors, cumbersome operation, inability to quickly fix the blades, and poor practicality.
A quick clamping mechanism for grinding aero-engine blades was designed using a positioning mechanism, which includes a positioning mechanism and a clamping mechanism. Through the combination of components such as support base, bolts, clamping blocks and adjusting rods, one-click locking and adaptive alignment are achieved, simplifying the clamping process.
This technology enables rapid and secure clamping of engine blades, reduces processing steps, improves production efficiency and practicality, and lowers production costs.
Smart Images
Figure CN121733399A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of clamping mechanism technology, and more specifically, it relates to a quick clamping mechanism for grinding aero-engine blades. Background Technology
[0002] Currently, when grinding aero-engine blades in China, it is necessary to grind different positions of the tenon and the blade crown. In order to ensure the stability of the engine blade during the grinding process, a clamping mechanism is required to fix and hold the engine blade.
[0003] Based on existing technology, it has been found that existing clamping mechanisms require multiple clamping operations on the tooling fixture to complete the grinding of different positions of the tenon and blade crown. Furthermore, each time an aero-engine blade is clamped, the part's reference point must be aligned before it can be clamped and installed in place. This results in disadvantages such as long clamping time, numerous clamping operations, and cumbersome processes. In addition, the errors caused by multiple clamping operations lead to an increase in defective products after blade grinding. The operation is cumbersome and cannot quickly clamp and fix engine blades, resulting in poor practicality. Summary of the Invention
[0004] To address the aforementioned technical problems, this invention provides a quick clamping mechanism for grinding aero-engine blades, thereby solving the problem that existing clamping mechanisms cannot quickly clamp and fix engine blades during use, resulting in poor practicality.
[0005] This invention provides a quick clamping mechanism for grinding aero-engine blades, achieved through the following specific technical means: A quick clamping mechanism for grinding aero-engine blades, including a positioning mechanism; A pressing mechanism is provided on the top of the positioning mechanism; the adjusting mechanism is provided on the positioning mechanism. The positioning mechanism includes: a main body, the top of which has a circular hole; a support A on the right side of the top of the main body; a spherical protrusion on the side of the support A; a support B on the left side of the top of the main body; a bolt on the support B; and a spherical protrusion on the bolt. The pressing mechanism includes: a pressing cover base; the pressing cover base is disposed on the top of the main body; a pressing body is disposed at the bottom of the pressing cover base; pressing block A and pressing block B are respectively disposed on both sides of the bottom of the pressing body; four sets of positioning pins are disposed at the bottom of the pressing cover base; the positioning pins are inserted into the round holes on the main body.
[0006] Furthermore, the positioning mechanism also includes: a screw, a mounting groove, and a sealing cap; The screw rod is arranged at the top of the main body; the screw rod top is provided with an operation handle; the installation slot is arranged in the main body; the installation slot is provided with sealing covers on both sides.
[0007] Further, the positioning mechanism further comprises a zero point positioning pin, an angular pin, a tightening column and a moving column. The zero point positioning pin is arranged at the center of the bottom of the main body; the angular pin is arranged on both sides of the bottom of the main body; the tightening column is slidingly arranged on the side of the top of the main body; the tightening column is connected with the main body through a spring; the moving column is slidingly arranged in the main body; the bottom of the moving column is connected with the main body through a spring; the moving column is arranged at the bottom of the screw rod; the side of the top of the moving column is provided with a wedge surface; the wedge surface of the moving column is in contact with the tightening column.
[0008] Further, the pressing block A and the supporting seat A are in position correspondence; the pressing block B and the supporting seat B are in position correspondence; the bottom of the positioning column is arranged in an arc structure; the positioning column passes through the installation slot.
[0009] Further, the top of the main body is provided with an engine blade; the left side of the engine blade is a blade crown; the right side of the engine blade is a tenon; the top of the engine blade is provided with a pressing body; the blade crown side of the engine blade is arranged at the top of the supporting seat A; the bottom side of the blade crown of the engine blade is in contact with the spherical protrusion of the supporting seat A; the top of the blade crown side of the engine blade is in contact with the pressing block A; the tenon side of the engine blade is arranged at the top of the supporting seat B; the top of the tenon side of the engine blade is in contact with the pressing block B; the bottom inside of the tenon of the engine blade is in contact with the spherical protrusion on the bolt; the side of the engine blade is in contact with the tightening column.
[0010] Further, the adjusting mechanism comprises an adjusting rod and a pull rod. The adjusting rod is arranged on the main body; the adjusting rod is provided with a thread; the adjusting rod is provided with an internal hexagonal groove; the pull rod is arranged on the adjusting rod; the pull rod passes through the installation slot; the pull rod is slidingly arranged in the main body.
[0011] Further, the adjusting mechanism further comprises a transverse connecting rod and a locking column. The transverse connecting rod is arranged on the pull rod; the transverse connecting rod is slidingly arranged in the installation slot; the locking column is slidingly arranged in the main body; the locking column is arranged on the transverse connecting rod; the locking column is provided with an arc surface; the locking columns are provided with a positioning column; the arc surfaces of the locking columns correspond to the arc surfaces of the positioning column.
[0012] Compared with the prior art, the present application has the following beneficial effects: 1、In the device, the screw rod and the tightening column are arranged, the screw rod is arranged on the main body, and the tightening column is slidably arranged on the side of the top of the main body, so that when in use, the engine blade is placed on the top of the main body, the tenon is arranged on the top of the support seat B, the blade crown of the engine blade is arranged on the top of the support seat A, the support seat A and the support seat B can assist in supporting the main body, the spherical protrusions on the support seat A and the spherical protrusions on the bolts are in contact with the bottom side of the blade crown and the tenon, the auxiliary positioning effect is achieved, and the two groups of screw rods are manually rotated, the screw rods drive the moving column to move upward and stretch the spring, the moving column pushes the tightening column transversely, the tightening column compresses the spring and is in contact with the side of the engine blade, and the auxiliary positioning and installation of the engine blade are completed; 2、In the device, the gland base body and the adjusting rod are arranged, the gland base body is arranged on the top of the main body, and the adjusting rod is arranged on the main body, so that when in use, the positioning column is inserted into the circular hole on the main body, the engine blade is wrapped by the compression body, the compression block A and the compression block B and the main body, the inner hexagonal socket of the inner hexagonal is inserted into the inner hexagonal slot of the adjusting rod and is rotated, the horizontal connecting rod is driven to move in the installation slot by the pull rod, the arc surface of the locking column is in contact with the arc surface of the positioning column, a downward force is generated on the positioning column, the compression block A and the compression block B are used for compressing the engine blade, the compression block A and the compression block B have a certain rotation gap, the compression block A and the compression block B can be self-adapted to find the compression blade body according to the change of the compression position of the engine blade, one-key locking is realized, the fast clamping function is firm, the operation is simple, fast and convenient, the process flow is reduced, the production efficiency is improved, and the practicality is higher. BRIEF DESCRIPTION OF DRAWINGS
[0013] Figure 1 It is the front view of the structure of the application.
[0014] Figure 2 It is the bottom view of the structure of the application.
[0015] Figure 3 It is the rear view of the structure of the application.
[0016] Figure 4 It is the bottom view of the structure of the application.
[0017] Figure 5 It is the bottom view of the structure of the application.
[0018] Figure 6 It is the engine blade structure of the application.
[0019] Figure 7 It is the positioning mechanism structure of the application.
[0020] Figure 8 is the schematic diagram of the main body of the application in partial cutaway perspective structure.
[0021] Figure 9 is the schematic diagram of the main body of the application in cutaway perspective structure.
[0022] Figure 10 is the schematic diagram of the A part of the application in partial enlarged structure. Figure 8
[0023] In the figure, the correspondence between the component names and the figure numbers is as follows: 1, positioning mechanism; 101, main body; 102, screw rod; 103, mounting groove; 104, sealing cover; 105, support seat A; 106, support seat B; 107, bolt; 108, zero positioning pin; 109, angular pin; 110, jacking column; 111, moving column; 2, pressing mechanism; 201, gland base body; 202, pressing body; 203, pressing block A; 204, pressing block B; 205, positioning column; 3, engine blade; 4, adjusting mechanism; 401, adjusting rod; 402, pull rod; 403, transverse connecting rod; 404, locking column. DETAILED DESCRIPTION
[0024] The embodiments of the application will be further described in detail below with reference to the accompanying drawings and examples.
[0025] Example: As shown in the accompanying Figure 1 to the accompanying Figure 10 : The application provides a quick clamping mechanism for grinding processing of an aero-engine blade, which comprises a positioning mechanism 1. A pressing mechanism 2 is arranged on the top of the positioning mechanism 1; and an adjusting mechanism 4 is arranged on the positioning mechanism 1. The positioning mechanism 1 comprises a main body 101, wherein a circular hole is arranged on the top of the main body 101; a support seat A 105 is arranged on the right side of the top of the main body 101; a spherical protrusion is arranged on the side of the support seat A 105; a support seat B 106 is arranged on the left side of the top of the main body 101; a bolt 107 is arranged on the support seat B 106; and a spherical protrusion is arranged on the bolt 107; the main body 101 is used to insert and install the positioning column 205 in the circular hole; the support seat A 105 and the support seat B 106 are respectively arranged corresponding to the shape of the blade crown and the tenon part of the engine blade 3, which can assist in supporting the two sides of the engine blade 3, and the spherical protrusion on the support seat A 105 and the spherical protrusion on the bolt 107 are matched with each other to respectively contact the blade crown and the tenon bottom side of the engine blade 3, so as to complete the auxiliary positioning of the engine blade 3 and limit the engine blade 3, and the bolt 107 can be used to assist in adjusting the positioning point to adapt to the positioning position of the tenon of the engine blade 3. The clamping mechanism 2 includes: a clamping base 201; the clamping base 201 is disposed on the top of the main body 101; a clamping body 202 is disposed at the bottom of the clamping base 201; clamping blocks A203 and B204 are respectively disposed on both sides of the bottom of the clamping body 202; four sets of positioning pins 205 are disposed at the bottom of the clamping base 201; the positioning pins 205 are inserted into the round holes on the main body 101; the clamping base 201 is used to install the clamping body 202, and the clamping body 202 is used to cooperate with the clamping blocks A203 and B204 to achieve the wrapping and clamping of the engine blade 3, and the positioning pins 205 are used to be inserted into the round holes on the main body 101 to complete the docking of the clamping base 201 and the main body 101.
[0026] Among them, such as Figure 4 As shown, the positioning mechanism 1 also includes: a screw 102, a mounting groove 103, and a sealing cover 104; the screw 102 is located on the top of the main body 101; an operating handle is provided on the top of the screw 102; the mounting groove 103 is located inside the main body 101; sealing covers 104 are provided on both sides of the mounting groove 103; the screw 102 here is used to rotate and drive the moving column 111 to move upward, and stretch the spring, so that when the wedge-shaped surface of the moving column 111 contacts the clamping column 110, it pushes it laterally, so that the clamping column 110 assists in positioning the engine blade 3. The screw 102 here can be rotatably connected to the moving column 111, and the moving column 111 can be driven to move up and down by the locking force of the threaded hole on the main body 101. The moving column 111 is also connected to the spring, so it will not rotate when moving, and it is a straight up and down movement.
[0027] Among them, such as Figure 4As shown, the positioning mechanism 1 also includes: a zero-point positioning pin 108, an angular pin 109, a clamping pin 110, and a moving pin 111; the zero-point positioning pin 108 is located at the center of the bottom of the main body 101; the angular pin 109 is located on both sides of the bottom of the main body 101; the clamping pin 110 is slidably located on the top side of the main body 101; the clamping pin 110 is connected to the main body 101 by a spring; the moving pin 111 is slidably located inside the main body 101; the bottom of the moving pin 111 is connected to the main body 101 by a spring; the moving pin 111 is located at the bottom of the screw 102; a wedge-shaped surface is provided on the top side of the moving pin 111; the wedge-shaped surface of the moving pin 111 contacts the clamping pin 110; the zero-point positioning pin 108 is used to mate with the hole of the external zero-point positioner, and an axial pulling force is applied pneumatically to the positioning pin, which will pull the internal mechanism of the fixture. The structure causes the conical sleeve surrounding the steel ball to move upward. Due to the inclined surface of the conical sleeve, the upward-moving conical sleeve will radially squeeze the steel ball outward from the inside, forcing it to be tightly embedded in the wall of the conical hole at the outer base end. The continuous tension force creates a huge interference fit between the steel ball and the conical hole at the base end, forming a rigid connection. This is the existing technology for zero-point positioning device connection. The repeatability of the zero-point positioning system is 0.005mm. This mechanism, when used in conjunction with the zero-point positioning system, can greatly improve production efficiency and reduce production costs. The angular pin 109 prevents the fixture from rotating, ensuring that the fixture has a unique and accurate angular position in the horizontal plane (X-axis and Y-axis directions). The clamping column 110 is used to assist in positioning the engine blade 3 by contacting the wedge surface of the moving column 111.
[0028] Among them, such as Figure 4 As shown, the clamping block A203 and the support base A105 are positioned to correspond to each other; the clamping block B204 and the support base B106 are positioned to correspond to each other; the bottom of the positioning post 205 is set with an arc-shaped structure; the positioning post 205 passes through the mounting groove 103.
[0029] Among them, such as Figure 4As shown, the main body 101 has an engine blade 3 on its top; the left side of the engine blade 3 is a crown; the right side of the engine blade 3 is a tenon; the top of the engine blade 3 has a clamping body 202; the crown side of the engine blade 3 is located on the top of the support A105; the bottom side of the crown of the engine blade 3 contacts the spherical protrusion of the support A105; the top of the crown side of the engine blade 3 contacts the clamping block A203; the tenon side of the engine blade 3 is located on the top of the support B106; the top of the tenon side of the engine blade 3 contacts the clamping block B204; the inner side of the bottom of the tenon of the engine blade 3 contacts the spherical protrusion on the bolt 107; the side of the engine blade 3 contacts the tightening column 110; the engine blade 3 here is used to achieve auxiliary positioning of the engine blade 3 by having the crown and tenon contact the clamping blocks A203 and B204 respectively, and by releasing the support A105 and support B106.
[0030] Among them, such as Figure 9 As shown, the adjustment mechanism 4 includes: an adjustment rod 401 and a pull rod 402; the adjustment rod 401 is mounted on the main body 101; the adjustment rod 401 is threaded; the adjustment rod 401 is provided with an internal hexagonal groove; the pull rod 402 is mounted on the adjustment rod 401; the pull rod 402 passes through the mounting groove 103; the pull rod 402 is slidably mounted inside the main body 101; the adjustment rod 401 and the pull rod 402 are rotatably connected here, and the thread on the adjustment rod 401 and the threaded hole of the main body 101 serve as an auxiliary locking mechanism, so that when rotating, the pull rod 402 and the transverse connecting rod 403 move inside the mounting groove 103.
[0031] Among them, such as Figure 9 As shown, the adjusting mechanism 4 also includes: a transverse connecting rod 403 and a locking pin 404; the transverse connecting rod 403 is mounted on the pull rod 402; the transverse connecting rod 403 is slidably mounted inside the mounting groove 103; the locking pin 404 is slidably mounted inside the main body 101; the locking pin 404 is mounted on the transverse connecting rod 403; the locking pin 404 has an arc-shaped surface; a positioning pin 205 is provided between the locking pins 404; the arc-shaped surface of the locking pin 404 corresponds to the arc-shaped surface on the positioning pin 205; the transverse connecting rod 403 is used to connect the movement of the four sets of locking pins 404, and drives the movement through the pull rod 402, so that the arc-shaped surface of the locking pin 404 contacts the arc-shaped surface at the bottom of the positioning pin 205, and applies a downward force to the positioning pin 205 to complete the locking of the positioning pin 205.
[0032] The specific usage and function of this embodiment are as follows: In the application, when the device is used, the engine blade 3 is placed on the top of the main body 101, the tenon side is arranged on the top of the support seat B106, the blade crown side of the engine blade 3 is arranged on the top of the support seat A105, the main body 101 can be assisted and supported by the support seat A105 and the support seat B106, the spherical protrusions on the support seat A105 and the spherical protrusions on the bolt 107 are in contact with the bottom side of the blade crown and the tenon, which can play an auxiliary positioning effect, the two groups of screw rods 102 are manually rotated, the screw rod 102 drives the moving column 111 to move upward and stretch the spring, the moving column 111 pushes the jacking column 110 horizontally, the jacking column 110 compresses the spring and is in contact with the side of the engine blade 3, the auxiliary positioning and installation of the engine blade 3 are completed, the positioning column 205 is inserted into the round hole on the main body 101, the compression body 202, the compression block A 203 and the compression block B 204 are matched with the main body 101 to complete the wrapping of the engine blade 3, the hexagonal socket is inserted into the hexagonal groove of the adjusting rod 401 and is rotated, the horizontal connecting rod 403 is driven by the pull rod 402 to move in the installation groove 103, the arc surface of the locking column 404 is in contact with the arc surface of the positioning column 205, a downward force is generated on the positioning column 205, the compression block A 203 and the compression block B 204 are used to compress the engine blade 3, the compression block A 203 and the compression block B 204 have a certain rotation gap, the compression block A 203 and the compression block B 204 can be self-adapted to find the compression blade body according to the change of the compression position of the engine blade 3, the zero positioning pin 108 and the angular pin 109 are connected and locked with the external zero position locator, and the installation of the device is completed.
Claims
1. A quick clamping mechanism for grinding aero-engine blades, characterized in that: Including positioning mechanism (1); The positioning mechanism (1) is provided with a pressing mechanism (2) at its top; the adjusting mechanism (4) is provided on the positioning mechanism (1); The positioning mechanism (1) includes: a main body (101), the top of which is provided with a round hole; a support seat A (105) is provided on the right side of the top of the main body (101); a spherical protrusion is provided on the side of the support seat A (105); a support seat B (106) is provided on the left side of the top of the main body (101); a bolt (107) is provided on the support seat B (106); and a spherical protrusion is provided on the bolt (107). The pressing mechanism (2) includes: a pressing base (201); the pressing base (201) is disposed on the top of the main body (101); a pressing body (202) is disposed at the bottom of the pressing base (201); pressing blocks A (203) and B (204) are respectively disposed on both sides of the bottom of the pressing body (202); four sets of positioning posts (205) are disposed at the bottom of the pressing base (201); the positioning posts (205) are inserted into the round holes on the main body (101).
2. The quick clamping mechanism for grinding aero-engine blades according to claim 1, characterized in that: The positioning mechanism (1) further includes: a screw (102), a mounting groove (103), and a sealing cap (104); The screw (102) is located on the top of the main body (101); an operating handle is provided on the top of the screw (102); the mounting groove (103) is located inside the main body (101); and sealing caps (104) are provided on both sides of the mounting groove (103).
3. The quick clamping mechanism for grinding aero-engine blades according to claim 2, characterized in that: The positioning mechanism (1) further includes: a zero-point positioning pin (108), an angular pin (109), a clamping column (110), and a moving column (111). The zero-point positioning pin (108) is located at the center of the bottom of the main body (101); the angular pin (109) is located on both sides of the bottom of the main body (101); the clamping column (110) is slidably located on the top side of the main body (101); the clamping column (110) is connected to the main body (101) by a spring; the moving column (111) is slidably located inside the main body (101); the bottom of the moving column (111) is connected to the main body (101) by a spring; the moving column (111) is located at the bottom of the screw (102); the top side of the moving column (111) is provided with a wedge-shaped surface; the wedge-shaped surface of the moving column (111) is in contact with the clamping column (110).
4. The quick clamping mechanism for grinding aero-engine blades according to claim 3, characterized in that: The clamping block A (203) and the support base A (105) are positioned to correspond to each other; the clamping block B (204) and the support base B (106) are positioned to correspond to each other; the bottom of the positioning post (205) is set with an arc-shaped structure; the positioning post (205) passes through the mounting groove (103).
5. The quick clamping mechanism for grinding aero-engine blades according to claim 1, characterized in that: The main body (101) is provided with an engine blade (3) on the top; the left side of the engine blade (3) is a crown; the right side of the engine blade (3) is a tenon; the top of the engine blade (3) is provided with a clamping body (202); the crown side of the engine blade (3) is provided on the top of the support A (105); the bottom side of the crown of the engine blade (3) is in contact with the spherical protrusion of the support A (105); the top of the crown side of the engine blade (3) is in contact with the clamping block A (203); the tenon side of the engine blade (3) is provided on the top of the support B (106); the top of the tenon side of the engine blade (3) is in contact with the clamping block B (204); the inner side of the bottom of the tenon of the engine blade (3) is in contact with the spherical protrusion on the bolt (107); the side of the engine blade (3) is in contact with the top clamping column (110).
6. The quick clamping mechanism for grinding aero-engine blades according to claim 2, characterized in that: The adjustment mechanism (4) includes: an adjustment rod (401) and a pull rod (402); The adjusting rod (401) is disposed on the main body (101); the adjusting rod (401) is provided with a thread; the adjusting rod (401) is provided with an internal hexagonal groove; the pull rod (402) is disposed on the adjusting rod (401); the pull rod (402) passes through the mounting groove (103); the pull rod (402) is slidably disposed inside the main body (101).
7. The quick clamping mechanism for grinding aero-engine blades according to claim 6, characterized in that: The adjustment mechanism (4) further includes: a transverse connecting rod (403) and a locking pin (404). The transverse connecting rod (403) is mounted on the tie rod (402); the transverse connecting rod (403) is slidably mounted inside the mounting groove (103); the locking pin (404) is slidably mounted inside the main body (101); the locking pin (404) is mounted on the transverse connecting rod (403); the locking pin (404) has an arc-shaped surface; a positioning pin (205) is provided between the locking pins (404); the arc-shaped surface of the locking pin (404) corresponds to the arc-shaped surface on the positioning pin (205).