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CN-122008142-A - Auxiliary scribing device and method for bending section of bending member

CN122008142ACN 122008142 ACN122008142 ACN 122008142ACN-122008142-A

Abstract

The invention discloses an auxiliary scribing device and method for a bending section of a bending member, and relates to the technical field of pipe bending angle measurement, wherein the device comprises a base, two groups of vernier calipers, an angle gauge, a flexible auxiliary scribing mechanism, a support I for installing the vernier calipers and a support II for placing the bending member; the two groups of vernier calipers are identical in specification and are vertically intersected in a horizontal plane, the two groups of vernier calipers are arranged on a support I, the angle ruler comprises an angle main graduated scale and an angle vernier scale, the support II comprises a curved member molded surface supporting block and a positioning rod, a flexible auxiliary scribing mechanism is connected with the angle ruler and is used for being attached to the outer surface of the curved member to assist in scribing operation, and meanwhile, the scribing method for the curved section of the curved member based on the device is provided, so that the technical problem of accurate scribing of the curved section of the welding conduit of an aviation pipeline is solved.

Inventors

  • GUO WEI
  • JIANG SENBAO
  • RONG PENG
  • LI GUANGJUN
  • YANG JINGCHAO
  • DUAN XIAOYAN
  • CUI BAOJIN
  • REN LISHA
  • LIAO JIALI
  • Zeng hongrun

Assignees

  • 成都飞机工业（集团）有限责任公司

Dates

Publication Date
20260512
Application Date
20260210

Claims (10)

  1. 1. The auxiliary scribing device for the bending section of the bending member is characterized by comprising a base (6), two groups of vernier calipers (1), an angle gauge (3), a flexible auxiliary scribing mechanism (4), a support I (2) for installing the vernier calipers (1) and a support II (5) for placing the bending member (7); the base (6) is used for installing the fixed angle ruler (3), the support I (2) and the support II (5); The two groups of vernier calipers (1) have the same specification and are vertically intersected in a horizontal plane, the two groups of vernier calipers (1) are installed and fixed on corresponding supports I (2), the supports I (2) are used for realizing the installation and positioning of the vernier calipers (1), and the vernier calipers (1) comprise a main graduated scale (11) and a vernier graduated scale (12); The angle ruler (3) comprises an angle main graduated scale (31) and an angle vernier scale (32); The support II (5) comprises a curved member molded surface supporting block (51) and a positioning rod (52), and the positioning rod (52) is assembled on the vernier caliper (1) and used for limiting the support II (5); The flexible auxiliary scribing mechanism (4) comprises a supporting rod (41), a fixed block (42), a horizontal sliding block (43), a vertical sliding block (44), a scribing auxiliary block (45) and a locking piece, wherein the supporting rod (41) is arranged on the angle ruler (3) through the fixed block (42), the horizontal sliding block (43) comprises a horizontal guide block (431) and a vertical guide block (432), and after the position of the angle vernier (32) is fixed, the horizontal sliding block (43), the vertical sliding block (44) and the scribing auxiliary block (45) are moved until the scribing auxiliary block (45) is attached to the outer surface of the bending member (7), and the locking piece is screwed to fix the positioning of each part; the flexible auxiliary scribing mechanism (4) is connected with the angle ruler (3) and is used for being attached to the outer surface of the bending member (7) to assist in scribing operation.
  2. 2. A bending section auxiliary scribing device of a bending member according to claim 1, wherein the vernier scale (12) comprises a graduated upstream scale (121), a graduated upstream scale (122) and a downstream scale (123), and the graduated upstream scale (121) and the graduated upstream scale (122) are respectively fixed on the downstream scale (123) through fasteners.
  3. 3. An auxiliary scribing apparatus for curved sections of a curved member according to claim 1, wherein said angle vernier (32) comprises an upstream scale (321) and a downstream scale (123), which are assembled to the angle main scale (31) by means of fasteners; After the angle vernier (32) moves to a set position, the fastener is screwed, and the positioning of the angle vernier (32) is fixed.
  4. 4. A bending section auxiliary scribing apparatus according to claim 3, wherein the angle gauge (3) further comprises a block (33) and a spacer (34), the block (33) and the spacer (34) being used for auxiliary fixing of the angle main scale (31) and the angle vernier (32).
  5. 5. The bending section auxiliary scribing apparatus as set forth in claim 1, wherein the bending member profile support block (51) is a replaceable structural member, and the profile (511) of the bending member profile support block (51) is one of a circular shape, a rectangular shape, an I-shape, or a T-shape.
  6. 6. The auxiliary scribing device for the bending section of the bending member is characterized in that threaded holes are formed in the upper end and the lower end of the support I (2), the threaded holes are fixedly connected with the base (6) through screws, and the two ends of the two groups of vernier calipers (1) are fixed on the corresponding support I (2) through screws.
  7. 7. The auxiliary scribing device for a bending section of a bending member according to claim 1, wherein the vernier scale (12) is provided with a rectangular hole (124), the positioning rod (52) is installed in the rectangular hole (124), and the bottom of the positioning rod (52) is in contact with the base (6).
  8. 8. A method of scoring a curved section of a curved member, wherein the auxiliary scoring apparatus based on the curved section of the curved member of claim 1 comprises the steps of: S1, placing a base (6) on a horizontal working surface, firstly, installing and fixing a support I (2) on the base (6), and then fixing two ends of two vernier calipers (1) with the same specification on the corresponding support I (2) through fasteners respectively, so that the two groups of vernier calipers (1) are vertically intersected and arranged in the horizontal plane; S2, selecting a bending member profile supporting block (51) of an adaptive profile (511) according to the cross-sectional shape of the bending member (7) to be scribed, assembling a positioning rod (52) of a support II (5) onto the vernier caliper (1) to realize limit fixation of the support I (2), and then placing the bending member (7) to be scribed on the bending member profile supporting block (51) to complete positioning and supporting of the bending member (7); S3, after the angle ruler (3) is installed in place, the angle vernier (32) is moved to reach a preset scribing angle position, and a fastener on the angle ruler (3) is screwed down to fix the position of the angle vernier (32); S4, mounting the supporting rod (41) on the angle ruler (3) through the fixing block (42), moving the horizontal sliding block (43) formed by the horizontal guide block (431) and the vertical guide block (432), and the vertical sliding block (44) and the scribing auxiliary block (45) until the scribing auxiliary block (45) is completely attached to the outer surface of the bending member (7) to be scribed, and screwing up a fastener of the flexible auxiliary scribing mechanism (4) to finish positioning and fixing of all components; s5, using a scribing tool along the bending section of the bending member (7) by taking a scribing auxiliary block (45) attached to the outer surface of the bending member (7) as a guide, and completing target scribing under the guidance of the scribing auxiliary block (45).
  9. 9. A curved section scribing method according to claim 8, wherein in step S2, the vernier scales (12) of the two vernier calipers (1) are respectively adjusted to scale positions matching with the preset bending radius R of the curved member (7), and are screwed and locked by corresponding fastening parts of the vernier calipers (1) to keep the positions of the vernier scales (12) fixed.
  10. 10. A method of scoring a curved section of a curved member according to claim 8, wherein in step S5, a marker is scored on the outer surface of the curved member (7) along a scoring assist block (45) with a scoring needle/marker.

Description

Auxiliary scribing device and method for bending section of bending member Technical Field The invention relates to the technical field of pipe bending angle measurement, in particular to an auxiliary scribing device and method for a bending section of a bending member. Background In the aerospace field, an aviation pipeline system comprises a large number of welding pipes, and the welding pipes have the characteristics of complex pipeline trend, dense branch pipe distribution, severe assembly precision requirement and the like, and in the repair and welding processing process, the operation must be completed by means of a special repair welding tool. The common butt welding mode is to cut off a pipe with a small bending radius at one end along a bending radius at the bending section and then weld the pipe with a straight-line section at the other end. Currently, in the operation process of cutting and repairing the bent section of the catheter, an operator needs to reserve machining allowance for cutting, and then the operator is repeatedly repaired and adjusted by combining a special repair welding tool to meet the assembly requirement. However, although the existing special repair tool has the characteristic of simple structure, the following problems still exist in practical application: firstly, the skill level of operators is extremely high, the cutting and scrapping of the catheter can be caused by improper operation in the operation process, the whole repair process is long in time consumption, and the production efficiency is seriously affected; secondly, can't accurately make the cutting auxiliary mark at pipe bending section, lead to the cutting to accomplish the back, the bending angle of cutting terminal surface department is difficult to keep unanimous with design digital analog, can't ensure follow-up welding assembly's precision, and then probably influence aviation pipeline system's wholeness ability and operational safety. In the prior art, some angle measurement or radian measurement tools are shown, but the actual requirements of accurate scribing of a bending section of a conduit cannot be met, for example, CN212340147U discloses an aircraft conduit manufacturing bending radian measurement device, the device projects the aircraft conduit to a scale plate through a lighting device, bending radian data are obtained by combining the angle displayed by the indexing device and the projection value measured by the scale plate, and accurate data support is provided for conduit manufacturing, but the technical scheme aims to realize measurement of the bending radian by utilizing a projection technology, and does not relate to any auxiliary device design related to accurate scribing of the bending section of the conduit, CN219675072U discloses a portable angle measurement device, the application scene of the portable angle measurement device is limited in the field of construction, the installation angle detection of a template and a temporary structure is not used for mention of any auxiliary technical scheme aiming at accurate scribing of the bending section of a bending member, CN219736149U discloses a digital display angle ruler which is mainly used for measuring the verticality of the longitudinal and transverse edges of the internal and external corners of the building, and the angle measurement device is not related to the auxiliary device for accurate scribing of the bending section of the bending member, and CN116817718A discloses an angle measurement device for plane design and a use method thereof, the angle measurement device is not related to accurate scribing of the bending section can not be met, and the requirements of the bending section can not be met for accurate scribing of the bending section is met. Therefore, the technical problem of accurate scribing of the bent section of the welding conduit of the aviation pipeline cannot be solved in the prior art, the requirements on the repair precision, efficiency and universality of the conduit in actual production cannot be met, and the accurate scribing auxiliary device for the bent section of the conduit, which has strong suitability and is easy and convenient to operate, is developed, so that the technical problem to be solved in the field is urgent. Disclosure of Invention The invention aims to provide an auxiliary scribing device and method for a bending section of a bending member, which solve the technical problem of accurate scribing of the bending section of a welding conduit of an aviation pipeline, and simultaneously have the characteristics of good universality, low manufacturing cost and convenience in operation. The invention is realized by the following technical scheme: the auxiliary scribing device for the bending section of the bending member comprises a base, two groups of vernier calipers, an angle gauge, a flexible auxiliary scribing mechanism, a support I for installing the vernier calipers and a support II f