阅读说明：本技术 一种同时测量间隙及阶差的工具及测量方法 (Tool and method for simultaneously measuring gap and step ) 是由 王娜 高泽宽 王晓东 罗勇 武鹏 陈垣均 章伟 徐俊仕 于 2019-10-08 设计创作，主要内容包括：本发明公开了一种同时测量间隙及阶差的工具,包括锁紧件、定位轴和移动卡尺,定位轴上设有滑槽,移动卡尺与定位轴正交设置,交点处用锁紧件固定,移动卡尺和定位轴上均设有刻度。测量方法为：将定位轴上的挡块靠在发动机前端面,同时移动移动卡尺；当移动卡尺与前罩圈后端蒙皮靠住时,拧紧锁紧件；读出定位轴上的刻度,即是发动机前端面与前罩圈后端蒙皮之间的阶差值,读出移动卡尺上与蒙皮接触处的刻度即是间隙值。通过该工具及方法,能准确的测量出阶差值和间隙值,避免了间隙值和阶差值测量不准确而影响发动机的性能,进而造成飞机飞行性能不能满足设计要求,同时提升了发动机安装的装配效率和装配质量,减轻了操作工人的劳动强度。(The invention discloses a tool for simultaneously measuring a gap and a step difference, which comprises a locking piece, a positioning shaft and a movable caliper, wherein the positioning shaft is provided with a sliding groove, the movable caliper is orthogonally arranged with the positioning shaft, the intersection point is fixed by the locking piece, and the movable caliper and the positioning shaft are provided with scales. The measuring method comprises the following steps: a stop block on the positioning shaft leans against the front end face of the engine, and the movable caliper is moved at the same time; when the movable caliper is abutted against the skin at the rear end of the front cover ring, the locking piece is screwed down; and reading scales on the positioning shaft, namely a step difference value between the front end surface of the engine and the skin at the rear end of the front cover ring, and reading scales at the contact part of the moving caliper and the skin, namely a gap value. By the aid of the tool and the method, the step value and the gap value can be accurately measured, the problem that the performance of the engine is affected due to inaccurate measurement of the gap value and the step value is avoided, the flying performance of the airplane cannot meet design requirements is avoided, meanwhile, the assembling efficiency and the assembling quality of engine installation are improved, and the labor intensity of operators is reduced.)

1. The utility model provides a tool of simultaneous measurement clearance and jump, its characterized in that includes retaining member, location axle and removal slide caliper rule, the epaxial spout that is equipped with in location, remove slide caliper rule and location axle quadrature setting, the intersection department is fixed with the retaining member, it all is equipped with the scale with the location epaxial to remove slide caliper rule.

2. The tool for simultaneously measuring the gap and the step according to claim 1, wherein the cross section of the sliding groove on the positioning shaft is C-shaped, and comprises a bottom edge, a left side edge and a right side edge, the left side edge and the right side edge extend oppositely to form a left covered edge and a right covered edge which are parallel to the bottom edge, and scales are arranged on the left covered edge.

3. The tool for simultaneously measuring the gap and the step difference as claimed in claim 2, wherein the scale on the left edge covering is increased from 0 at the bottom end of the positioning shaft along the length direction of the positioning shaft.

4. The tool for simultaneously measuring the gap and the step as claimed in claim 2, wherein the positioning shaft is provided with a stopper at a bottom end side thereof.

5. The tool for simultaneously measuring the gap and the step according to claim 1, wherein a sliding block matched with the sliding groove is arranged at the rear side of one end, fixed with the positioning shaft, of the movable caliper, and the locking member passes through the movable caliper and the sliding block to lock the movable caliper and the positioning shaft.

6. The tool of claim 1, wherein the scale on the moving caliper increases from 0 from right to left along the bottom edge of the moving caliper, and the 0 scale is located at the intersection of the bottom edge of the moving caliper and the left side edge of the positioning shaft.

7. The tool of claim 6, wherein the right end of the movable caliper is flush with the right side of the positioning shaft.

8. A method for simultaneously measuring a gap and a step, using the tool for measuring a gap and a step according to any one of claims 1 to 7, comprising the steps of:

(1) tightly leaning a stop block on the positioning shaft against the front end face of the engine, and moving the movable caliper;

(2) when the movable caliper is tightly abutted with the skin at the rear end of the front cover ring, the locking piece is screwed down;

(3) and reading out the scale on the positioning shaft, namely the step difference value between the front end surface of the engine and the skin at the rear end of the front shroud ring, and reading out the scale at the contact part of the movable caliper and the skin, namely the gap value between the front end surface of the engine and the skin at the rear end of the front shroud ring, so that the gap value and the step difference value between the front end surface of the engine and the skin at the rear end of the front shroud ring are measured simultaneously.

Technical Field

The invention relates to the technical field of airplane assembly, in particular to a tool and a method for simultaneously measuring gaps and step differences.

Background

After the engine is assembled and the engine is horizontally measured in the final assembly stage of the airplane, the gap and the step difference between the engine and the front cover ring need to be checked so as to meet the installation requirement of the engine. After the engine installation was accomplished before, the operator measured the engine through the ruler and enclosed the clearance before, and the rethread plug gauge comes the jump between measuring engine and the preceding cover circle, and because it is narrow and small at intake duct inner space, the error is great when the reading, leads to measuring result inaccurate, need measure repeatedly, influences the installation and the adjustment of engine, influences the aircraft and delivers the progress.

Disclosure of Invention

In order to solve the problems, the invention provides a tool and a method for simultaneously measuring gaps and step differences, which are designed mainly aiming at the fact that the gaps and the step differences between an engine and a front cover ring can be rapidly and accurately measured simultaneously after the engine is installed.

The technical scheme adopted by the invention is as follows: the utility model provides a simultaneous measurement clearance and jump's instrument, includes retaining member, location axle and removal slide caliper rule, the epaxial spout that is equipped with in location, remove slide caliper rule and location axle quadrature setting, the intersection department is fixed with the retaining member, remove the epaxial scale that all is equipped with in slide caliper rule and the location.

Furthermore, the cross section of the sliding groove in the positioning shaft is C-shaped and comprises a bottom edge, a left side edge and a right side edge, the left side edge and the right side edge extend oppositely to form a left edge covering and a right edge covering which are parallel to the bottom edge, and scales are arranged on the left edge covering.

Further, the scale on the left wrapping edge is increased from 0 from the bottom end of the positioning shaft along the length direction of the positioning shaft.

Furthermore, a stop block is arranged on the side edge of the bottom end of the positioning shaft.

Further, the movable caliper and the rear side of the fixed end of the positioning shaft are provided with a sliding block matched with the sliding groove, and the locking piece penetrates through the movable caliper and the sliding block to lock the movable caliper and the positioning shaft.

Further, the scale on the moving caliper is gradually increased from 0 from right to left along the bottom edge of the scale, and the 0 scale is located at the intersection point of the bottom edge of the moving caliper and the left side edge of the positioning shaft.

Further, the right end of the movable caliper is flush with the right side edge of the positioning shaft.

A measuring method for simultaneously measuring gaps and step differences adopts the tool for measuring the gaps and the step differences, and comprises the following steps:

(1) tightly leaning a stop block on the positioning shaft against the front end face of the engine, and moving the movable caliper;

(2) when the movable caliper is tightly abutted with the skin at the rear end of the front cover ring, the locking piece is screwed down;

(3) and reading out the scale on the positioning shaft, namely the step difference value between the front end surface of the engine and the skin at the rear end of the front shroud ring, and reading out the scale at the contact part of the movable caliper and the skin, namely the gap value between the front end surface of the engine and the skin at the rear end of the front shroud ring, so that the gap value and the step difference value between the front end surface of the engine and the skin at the rear end of the front shroud ring are measured simultaneously.

The invention has the beneficial effects that:

1. according to the process requirements, after the engine is installed and horizontally measured, the gap value and the step value between the engine and the front cover ring can be rapidly and accurately measured simultaneously, the adjustment time of the engine is shortened, the assembly efficiency of the engine is improved, and the delivery quality and progress requirements are met.

2. The device can be used repeatedly. The device can obviously reduce the labor intensity of operators, improve the measurement precision and efficiency of gaps and step differences, ensure the assembly quality of the airplane and improve the delivery speed.

3. The tool and the method for simultaneously measuring the gap and the step can accurately measure the step value and the gap value, avoid the problem that the performance of an engine is influenced due to inaccurate measurement of the gap value and the step value, further cause the flight performance of an airplane to fail to meet the design requirement, simultaneously improve the assembly efficiency and the assembly quality of the engine installation, and reduce the labor intensity of operators.

Drawings

FIG. 1 is a front view of a gap and step measurement tool of the present invention;

FIG. 2 is a side view of the gap and step measurement tool of the present invention;

FIG. 3 is a top view of the gap and step measurement tool of the present invention;

FIG. 4 is a diagram illustrating the operation of the gap and step measurement tool according to the present invention.

Detailed Description

For the purpose of enhancing the understanding of the present invention, the present invention will be further described in detail with reference to the following examples and the accompanying drawings, which are only used for explaining the present invention and are not to be construed as limiting the scope of the present invention.