CN115502736A - Self-adaptive clamping mechanism for blade machining - Google Patents

Self-adaptive clamping mechanism for blade machining Download PDF

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Publication number
CN115502736A
CN115502736A CN202211342442.5A CN202211342442A CN115502736A CN 115502736 A CN115502736 A CN 115502736A CN 202211342442 A CN202211342442 A CN 202211342442A CN 115502736 A CN115502736 A CN 115502736A
Authority
CN
China
Prior art keywords
chuck
sliding block
arm
guide
self
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202211342442.5A
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Chinese (zh)
Inventor
赵西松
庄涛
阚敏
李硕
王宇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AECC Shenyang Liming Aero Engine Co Ltd
Original Assignee
AECC Shenyang Liming Aero Engine Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by AECC Shenyang Liming Aero Engine Co Ltd filed Critical AECC Shenyang Liming Aero Engine Co Ltd
Priority to CN202211342442.5A priority Critical patent/CN115502736A/en
Publication of CN115502736A publication Critical patent/CN115502736A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q2703/00—Work clamping
    • B23Q2703/02—Work clamping means
    • B23Q2703/10—Devices for clamping workpieces of a particular form or made from a particular material

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jigs For Machine Tools (AREA)

Abstract

A self-adaptive clamping mechanism for processing blades has the characteristics of simple structure and easy operation, and an adapter thereof is coaxially and fixedly connected with the back of an adapter plate; the guide seat is fixedly connected to the front side of the switching disc; a guide chute is arranged on the guide seat; the positive and negative screw rods are positioned in the guide sliding chute and are distributed in parallel; the positive and negative tooth screw rods can only rotate in the guide sliding chutes; the upper sliding block is positioned in the guide sliding chute and is in threaded connection and matching with the positive thread section of the positive and negative thread screw; the lower sliding block is positioned in the guide sliding chute and is in threaded connection and matching with the reverse thread threaded section of the forward and reverse thread screw; the upper sliding block and the lower sliding block are symmetrically distributed in a mirror image mode; the root of the upper clamping arm is fixedly connected with the upper sliding block; the root of the lower clamping arm is fixedly connected with the lower sliding block, and the lower clamping arm and the upper clamping arm are distributed in a mirror symmetry manner; the self-adaptive jacking assembly is positioned in the middle of the upper sliding block and the lower sliding block and is arranged on the guide seat; the upper chuck is hinged to the front end of the upper clamping arm, and a plurality of upper rubber pressing blocks are hinged to the upper chuck; the lower chuck is hinged at the front end of the lower chuck arm, and a plurality of lower rubber pressing blocks are hinged on the lower chuck.

Description

Self-adaptive clamping mechanism for blade machining
Technical Field
The invention belongs to the technical field of manufacturing of parts of aero-engines, and particularly relates to a self-adaptive clamping mechanism for blade machining.
Background
Because the blade of the aircraft engine has the characteristics of complex profile, small body and low processing qualified rate, the blade of the aircraft engine also brings about a plurality of problems for processing and manufacturing the blade of the aircraft engine. Taking the stator blade of a certain type of aero-engine as an example, when the blade is turned into a similar simply supported beam structure, the blade body of the blade is easy to deform after being influenced by cutting force, so that machining vibration and size are out of tolerance, the blade can be scrapped when the blade is serious, and the machining qualification rate of the stator blade of the aero-engine is always low. Therefore, it is necessary to design a proper blade clamping mechanism to enhance the rigidity of the blade body.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a self-adaptive clamping mechanism for processing a blade, which has the characteristics of simple structure and easiness in operation, compared with the traditional clamping mechanism, the self-adaptive clamping mechanism can reduce the processing and adjusting time by more than 80%, meanwhile, the self-adaptive clamping of the blade can be realized, the influence of cutting force on the blade body is reduced, the blade body is prevented from deforming, the processing vibration and the size over-tolerance are prevented, and after practical application, the turning qualification rate of the working procedure of the blade is improved to 100%.
In order to achieve the purpose, the invention adopts the following technical scheme: a self-adaptive clamping mechanism for processing blades comprises a switching seat, a switching disc, a guide seat, a positive and negative tooth screw rod, an upper slide block, a lower slide block, an upper clamping arm, a lower clamping arm, a self-adaptive jacking assembly, an upper chuck and a lower chuck; the adapter is coaxially and fixedly connected with the back surface of the adapter plate; the guide seat is fixedly connected to the front side of the adapter plate; a guide sliding groove is formed in the guide seat; the positive and negative tooth screw rods are arranged in the guide sliding chutes and are parallel to the guide sliding chutes, and the positive and negative tooth screw rods only have rotational freedom degrees in the guide sliding chutes; the upper sliding block is positioned in the guide sliding chute and is in threaded connection with the orthodontic threaded section of the positive and negative tooth screw; the lower sliding block is positioned in the guide sliding chute and is in threaded connection with the reverse thread section of the positive and negative thread screw; the upper sliding block and the lower sliding block are symmetrically distributed in a mirror mode; the root part of the upper clamping arm is fixedly connected with the upper sliding block; the root of the lower clamping arm is fixedly connected with the lower sliding block, and the lower clamping arm and the upper clamping arm are distributed in a mirror symmetry manner; the self-adaptive jacking assembly is positioned in the middle of the upper sliding block and the lower sliding block and is arranged on the guide seat; the upper chuck is arranged at the front end of the upper clamping arm; the lower chuck is arranged at the front end of the lower chuck arm and is in mirror symmetry distribution with the upper chuck.
The cross section of the upper chuck is T-shaped; an upper chuck mounting slot is formed in the upper clamping arm, a vertical arm of the upper chuck is positioned in the upper chuck mounting slot, and the vertical arm of the upper chuck is hinged with the upper clamping arm through a first pin shaft; a plurality of grooves are formed in the lower surface of the horizontal arm of the upper chuck, and an upper rubber pressing block is arranged in each groove; the upper rubber pressing block is hinged with the upper chuck through a second pin shaft.
The cross section of the lower chuck is T-shaped; a lower chuck mounting slot is formed in the lower clamping arm, a vertical arm of the lower chuck is positioned in the lower chuck mounting slot, and the vertical arm of the lower chuck is hinged with the lower clamping arm through a third pin shaft; a plurality of grooves are formed in the upper surface of the horizontal arm of the lower chuck, and a lower rubber pressing block is arranged in each groove; the lower rubber pressing block is hinged with the lower chuck through a fourth pin shaft.
The self-adaptive jacking assembly comprises a centre, a thrust spring, a plug and a spring clamping piece; the root part of the spring clamping piece is fixedly connected to the guide seat; the plug is positioned in the spring clamping piece and is fixedly arranged at the root part of the spring clamping piece; the center is positioned in the spring clamping piece, and the center has sliding freedom degree in the spring clamping piece; the thrust spring is positioned in the spring clamping piece and connected between the tip and the plug.
The invention has the beneficial effects that:
the self-adaptive clamping mechanism for processing the blade has the characteristics of simple structure and easiness in operation, can reduce the processing adjusting time by more than 80% compared with the traditional clamping mechanism, can realize self-adaptive clamping of the blade, reduces the influence of cutting force on the blade body, avoids the deformation of the blade body, prevents the occurrence of processing vibration and size over-tolerance, and improves the turning qualification rate of the working procedure of the blade to 100% after practical application.
Drawings
FIG. 1 is a top view of an adaptive clamping mechanism for machining a blade according to the present invention;
FIG. 2 is a front view (in cross-section) of an adaptive clamping mechanism for machining a blade of the present invention;
FIG. 3 isbase:Sub>A sectional view taken along line A-A of FIG. 2; (ii) a
FIG. 4 is an enlarged view of portion I of FIG. 2;
in the figure, 1-adapter, 2-adapter plate, 3-guide holder, 4-positive and negative tooth screw, 5-upper slide block, 6-lower slide block, 7-upper clamping arm, 8-lower clamping arm, 9-upper clamping head, 10-lower clamping head, 11-guide chute, 12-upper clamping head mounting slot, 13-first pin shaft, 14-upper rubber pressing block, 15-second pin shaft, 16-lower clamping head mounting slot, 17-third pin shaft, 18-lower rubber pressing block, 19-fourth pin shaft, 20-tip, 21-thrust spring, 22-plug, 23-spring clamping piece and 24-stator blade.
Detailed Description
The invention is described in further detail below with reference to the figures and the specific embodiments.
As shown in fig. 1 to 4, a self-adaptive clamping mechanism for processing a blade comprises an adapter 1, an adapter disc 2, a guide base 3, a positive and negative tooth screw rod 4, an upper sliding block 5, a lower sliding block 6, an upper clamping arm 7, a lower clamping arm 8, a self-adaptive puller assembly, an upper chuck 9 and a lower chuck 10; the adapter 1 is coaxially and fixedly connected with the back surface of the adapter disc 2; the guide seat 3 is fixedly connected to the front side of the adapter plate 2; a guide chute 11 is arranged on the guide seat 3; the positive and negative tooth screw rods 4 are arranged in the guide sliding chutes 11, the positive and negative tooth screw rods 4 are parallel to the guide sliding chutes 11, and the positive and negative tooth screw rods 4 only have rotational freedom degrees in the guide sliding chutes 11; the upper sliding block 5 is positioned in the guide sliding chute 11, and the upper sliding block 5 is in threaded connection with the positive thread section of the positive and negative thread screw rod 4; the lower sliding block 6 is positioned in the guide sliding chute 11, and the lower sliding block 6 is in threaded connection and matching with the reverse thread section of the forward and reverse thread screw rod 4; the upper sliding block 5 and the lower sliding block 6 are distributed in a mirror symmetry mode; the root of the upper clamping arm 7 is fixedly connected with the upper sliding block 5; the root of the lower clamping arm 8 is fixedly connected with the lower sliding block 6, and the lower clamping arm 8 and the upper clamping arm 7 are distributed in a mirror symmetry manner; the self-adaptive jacking assembly is positioned between the upper sliding block 5 and the lower sliding block 6 and is arranged on the guide seat 3; the upper chuck 9 is arranged at the front end of the upper clamping arm 7; the lower chuck 10 is arranged at the front end of the lower clamping arm 8, and the lower chuck 10 and the upper chuck 9 are distributed in a mirror symmetry mode.
The cross section of the upper chuck 9 is T-shaped; an upper chuck mounting slot 12 is formed in the upper clamping arm 7, a vertical arm of the upper chuck 9 is located in the upper chuck mounting slot 12, and the vertical arm of the upper chuck 9 is hinged to the upper clamping arm 7 through a first pin shaft 13; a plurality of grooves are formed in the lower surface of the horizontal arm of the upper chuck 9, and an upper rubber pressing block 14 is arranged in each groove; the upper rubber pressing block 14 is hinged with the upper chuck 9 through a second pin shaft 15.
The cross section of the lower chuck 10 is T-shaped; a lower chuck mounting slot 16 is formed in the lower clamping arm 8, a vertical arm of the lower chuck 10 is located in the lower chuck mounting slot 16, and the vertical arm of the lower chuck 10 is hinged to the lower clamping arm 8 through a third pin shaft 17; a plurality of grooves are formed in the upper surface of the horizontal arm of the lower chuck 10, and a lower rubber pressing block 18 is arranged in each groove; the lower rubber pressing block 18 is hinged with the lower chuck 10 through a fourth pin shaft 19.
The self-adaptive jacking assembly comprises a centre 20, a thrust spring 21, a plug 22 and a spring clamping piece 23; the root part of the spring clamping piece 23 is fixedly connected to the guide seat 3; the plug 22 is positioned in the spring clamping piece 23 and is fixedly arranged at the root part of the spring clamping piece 23; the centre 20 is positioned inside the spring clamping piece 23, and the centre 20 has a sliding freedom degree inside the spring clamping piece 23; the thrust spring 21 is located inside the spring clip 23 and is connected between the tip 20 and the plug 22.
The one-time use process of the present invention is described below with reference to the accompanying drawings:
the clamping mechanism is connected to a lathe spindle chuck through an adapter 1, a screw 4 with positive and negative teeth is screwed through a wrench, the rotary motion of the screw 4 with positive and negative teeth is converted into the linear motion of an upper slide block 5 and a lower slide block 6, the upper slide block 5 and the lower slide block 6 are separated from each other along a guide sliding groove 11, an upper chuck 9 on an upper clamping arm 7 and a lower chuck 10 on a lower clamping arm 8 are separated from each other, and the distance between the upper chuck 9 and the lower chuck 10 can meet the passing of a stator blade 24.
Selecting a stator blade 24 to be processed, firstly sending the stator blade 24 into a space between an upper chuck 9 and a lower chuck 10, then accurately inserting the small tenon end of the stator blade 24 into a spring clamping piece 23, enabling a tip 20 to be propped in a prefabricated tip hole of the small tenon end of the stator blade 24, enabling a thrust spring 21 to be in a compressed state, and then controlling a lathe tip to tightly prop the large tenon end of the stator blade 24 from the other side, and then finishing the positioning of the stator blade 24.
After the stator blade 24 is positioned, the screw 4 with the positive and negative teeth is screwed by the wrench again, the upper slide block 5 and the lower slide block 6 are controlled to approach each other along the guide chute 11, and then the upper chuck 9 and the lower chuck 10 approach each other until the blade body of the stator blade 24 is clamped between the upper rubber compression block 14 and the lower rubber compression block 18, and at this time, the rigidity of the stator blade 24 is effectively enhanced.
When the blade body of the stator blade 24 is clamped by the upper rubber compression block 14 and the lower rubber compression block 18, due to the hinged characteristic of the upper chuck 9 and the lower chuck 10 and the hinged characteristic of the upper rubber compression block 14 and the lower rubber compression block 18, self-adaptive attitude adjustment can be realized in the process of clamping the blade body of the stator blade 24, the multi-point self-adaptive clamping requirement in the face of the complex profile of the blade body of the stator blade 24 is effectively met, the blade body is prevented from deforming in the turning process, the occurrence of processing vibration and size over-tolerance is prevented, and after practical application, the turning qualification rate of the process where the stator blade 24 is located is increased to 100%.
The embodiments are not intended to limit the scope of the present invention, and all equivalent implementations or modifications without departing from the scope of the present invention are intended to be included in the scope of the present invention.

Claims (4)

1. The utility model provides a blade processing is with self-adaptation fixture which characterized in that: the self-adaptive jacking device comprises a switching seat, a switching disc, a guide seat, a positive and negative tooth screw rod, an upper slide block, a lower slide block, an upper clamping arm, a lower clamping arm, a self-adaptive jacking assembly, an upper chuck and a lower chuck; the adapter is coaxially and fixedly connected with the back surface of the adapter plate; the guide seat is fixedly connected to the front side of the adapter plate; a guide sliding groove is formed in the guide seat; the screw with the positive and negative teeth is arranged in the guide chute, is parallel to the guide chute and only has rotational freedom in the guide chute; the upper sliding block is positioned in the guide sliding chute and is in threaded connection with the orthodontic threaded section of the positive and negative tooth screw; the lower sliding block is positioned in the guide sliding chute and is in threaded connection with the reverse thread section of the positive and negative thread screw; the upper sliding block and the lower sliding block are symmetrically distributed in a mirror mode; the root of the upper clamping arm is fixedly connected with the upper sliding block; the root of the lower clamping arm is fixedly connected with the lower sliding block, and the lower clamping arm and the upper clamping arm are distributed in a mirror symmetry manner; the self-adaptive jacking assembly is positioned in the middle of the upper sliding block and the lower sliding block and is arranged on the guide seat; the upper chuck is arranged at the front end of the upper clamping arm; the lower chuck is arranged at the front end of the lower chuck arm and is in mirror symmetry distribution with the upper chuck.
2. The self-adaptive clamping mechanism for blade machining according to claim 1, characterized in that: the cross section of the upper chuck is T-shaped; an upper chuck mounting slot is formed in the upper clamping arm, a vertical arm of the upper chuck is positioned in the upper chuck mounting slot, and the vertical arm of the upper chuck is hinged with the upper clamping arm through a first pin shaft; a plurality of grooves are formed in the lower surface of the horizontal arm of the upper chuck, and an upper rubber pressing block is arranged in each groove; the upper rubber pressing block is hinged with the upper chuck through a second pin shaft.
3. The self-adaptive clamping mechanism for blade machining according to claim 1, characterized in that: the cross section of the lower chuck is T-shaped; a lower chuck mounting slot is formed in the lower clamping arm, a vertical arm of the lower chuck is positioned in the lower chuck mounting slot, and the vertical arm of the lower chuck is hinged with the lower clamping arm through a third pin shaft; a plurality of grooves are formed in the upper surface of the horizontal arm of the lower chuck, and a lower rubber pressing block is arranged in each groove; the lower rubber pressing block is hinged with the lower chuck through a fourth pin shaft.
4. The self-adaptive clamping mechanism for blade machining according to claim 1, characterized in that: the self-adaptive jacking assembly comprises a centre, a thrust spring, a plug and a spring clamping piece; the root part of the spring clamping piece is fixedly connected to the guide seat; the plug is positioned in the spring clamping piece and is fixedly arranged at the root part of the spring clamping piece; the center is positioned inside the spring clamping piece and has a sliding freedom degree inside the spring clamping piece; the thrust spring is positioned in the spring clamping piece and connected between the tip and the plug.
CN202211342442.5A 2022-10-31 2022-10-31 Self-adaptive clamping mechanism for blade machining Pending CN115502736A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211342442.5A CN115502736A (en) 2022-10-31 2022-10-31 Self-adaptive clamping mechanism for blade machining

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211342442.5A CN115502736A (en) 2022-10-31 2022-10-31 Self-adaptive clamping mechanism for blade machining

Publications (1)

Publication Number Publication Date
CN115502736A true CN115502736A (en) 2022-12-23

Family

ID=84513147

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202211342442.5A Pending CN115502736A (en) 2022-10-31 2022-10-31 Self-adaptive clamping mechanism for blade machining

Country Status (1)

Country Link
CN (1) CN115502736A (en)

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