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CN-119436993-B - Device for measuring distance between intersection point shafts of two arm end surfaces and two inner or two outer end surfaces of angle piece

CN119436993BCN 119436993 BCN119436993 BCN 119436993BCN-119436993-B

Abstract

The invention discloses a distance measuring device for intersection point shafts of two arm end surfaces and two inner or two outer end surfaces of an angular piece, wherein a base plate is provided with T-shaped and inclined T-shaped key grooves intersecting to form an angle of 45 degrees, an L-shaped step positioning block and a pressing mechanism are arranged on the base plate, a central axis of a fixing hole formed in the bottom surface of the inclined T-shaped key groove is positioned on an extension surface of a step vertical surface of the L-shaped step positioning block, an angle positioning block is rotatably fixed in the fixing hole on the base plate, a main fixing seat and a vernier fixing seat are slidably assembled in the T-shaped and inclined T-shaped key grooves, during testing, a tested part is placed on a step of the L-shaped step positioning block and is pressed and fixed by the angle positioning block, and the main fixing seat is tightly attached to the end head of a tested part testing arm by the pressing mechanism. The invention has the advantages of simple structure, easy manufacture, low cost, simple operation and high measurement speed, and is more suitable for the detection and measurement of large-batch single-angle arc bending angle pieces.

Inventors

  • HAN ZHIRU

Assignees

  • 保定向阳航空精密机械有限公司

Dates

Publication Date
20260512
Application Date
20240929

Claims (6)

  1. 1. The distance measuring device for the intersection point shaft of the two arm end surfaces and the two inner or two outer end surfaces of the angle piece is characterized by comprising a base plate, an L-shaped step positioning block, an angle positioning block, a first fixed shaft, a pressing mechanism and a vernier caliper; the foundation plate is provided with a T-shaped key groove and an inclined T-shaped key groove, the T-shaped key groove and the inclined T-shaped key groove are intersected to form an angle of 45 degrees, and an intersection point A is close to one end of the foundation plate; the angle positioning block is provided with an L-shaped step in the length direction, one end of the angle positioning block stretches out of a protruding block with the upper end face flush with the horizontal plane of the L-shaped step, the protruding block is provided with a vertical mounting hole with the central axis positioned on the extending plane of the L-shaped step, the angle positioning block is rotatably fixed on the foundation plate through a first fixed shaft fixed in the fixed hole on the foundation plate, the vernier caliper comprises a main scale and a rectangular main fixing seat, the main scale comprises a long main scale and a rectangular main scale, the end face of the main scale close to the L-shaped step is flush with the extending plane of the step of the main fixing seat, the main scale is fixed on the upper end face of the main fixing seat or a protruding block embedded in the groove of the end face of the main step, the zero line of the vernier caliper is coincident with the zero line of the vernier caliper, the vernier caliper comprises a main scale and a vernier caliper, the upper end face of the vernier fixing seat is provided with a sliding groove which is tightly assembled with the main fixing seat and can slide, the lower end of one end of the main fixing seat, which is close to the L-shaped step positioning block, extends out of a T-shaped key which is matched with a T-shaped key groove of the foundation plate, an inclined T-shaped key which is matched with an inclined T-shaped key groove of the foundation plate is fixed in the middle of the lower end of the vernier fixing seat, the main fixing seat is slidably arranged in the sliding groove of the vernier fixing seat, the main fixing seat and the vernier fixing seat are respectively slidably assembled in the T-shaped key groove and the inclined T-shaped key groove of the foundation plate, during testing, a tested part is placed on a step of the L-shaped step positioning block and is positioned by an angle positioning block, and is tightly pressed and fixed by a pressing mechanism, so that the main fixing seat and the vernier fixing seat are pushed to be tightly attached to the end of a tested part, and the displayed sizes on the main ruler and the vernier scale are the lengths of the inner end face or the outer end face of the tested arm.
  2. 2. The device for measuring the distance between the intersection point shafts of the two end faces of the two arms and the two inner end faces or the two outer end faces of the angular piece according to claim 1 is characterized in that the pressing mechanism comprises a fixing main body and a pressing piece, the fixing main body is fixed on a foundation plate, the pressing piece comprises a pressing screw and an elastic pressing block, the pressing screw is screwed into a threaded hole formed in the fixing main body, the rear end of the pressing screw is provided with a handle, the front end of the pressing screw is fixed in a clamping groove of the elastic pressing block, or the pressing piece comprises a pressing square rod and an elastic pressing block, the pressing square rod is slidably arranged in a sliding hole formed in the fixing main body, the rear end of the pressing square rod is fixedly provided with the pressing handle or is connected with the pressing mechanism, the front end of the pressing square rod is fixedly provided with the elastic pressing block, and the central axis of the threaded hole or the sliding hole formed in the fixing main body is perpendicular to the vertical surface of the step of the L-shaped step positioning block.
  3. 3. The device for measuring the distance between intersection points of two end faces of two arms and two inner or two outer end faces of an angle piece according to claim 2 is characterized in that the elastic pressing block is a rubber block.
  4. 4. The distance measuring device for the intersection point shaft of the two end faces of the two arms and the two inner end faces or the two outer end faces of the angle piece according to claim 1, 2 or 3 is characterized by further comprising an anti-falling bolt which is screwed and fastened at one end of the T-shaped key groove far away from the intersection point A.
  5. 5. The distance measuring device for the intersection point axis of two arm end surfaces and two inner or two outer end surfaces of the angle piece according to claim 4, wherein the protruding block end surface of the angle positioning block is semicircular.
  6. 6. A distance measuring device for the intersection point axis of the two arm end surfaces and the two inner or two outer end surfaces of the angle piece according to claim 1, 2 or 3, wherein the protruding block end surface of the angle positioning block is semicircular.

Description

Device for measuring distance between intersection point shafts of two arm end surfaces and two inner or two outer end surfaces of angle piece Technical Field The invention belongs to the technical field of measurement of part length, and relates to a measuring device for the distance between the intersection line of two arm end surfaces and two inner end surfaces or the intersection line of two outer end surfaces of an arc-shaped transition angle piece. Background The angle formed by bending is generally an arc transition angle, and as shown in fig. 1, the technical parameter marked on the drawing by a designer is generally the size of the distance L2 or L1 between the intersection line of the two arm end surfaces and the two inner end surfaces or the intersection line of the two outer end surfaces of the angle. In order to ensure the precision requirement of the arc transition angle piece manufacture, the L2 and L1 of the manufactured arc transition angle piece are required to be measured and then compared with the L2 and L1 numerical values marked on the design drawing, and the precision requirement of the arc transition angle piece can be ensured as long as the error is within a specified error range. The existing L2 and L1 measurement adopts a three-coordinate measuring machine, three surfaces are required to be measured respectively for L2 or L1 measurement, namely, three points are required to be taken for each surface to be determined, namely, one arm end surface, two inner end surfaces or two outer end surfaces of the arc-shaped transition angular piece, 9 points are required to be taken for the arc-shaped transition angular piece L2 or L1 measurement, the operation is complex, the operation of professionals who can take a computer is required, the measurement speed is low, the measurement efficiency is extremely low when a large number of parts are measured, and the three-coordinate measuring machine is high in price and high in measurement cost. Disclosure of Invention The invention aims to solve the problems in the prior art and provides a device for measuring the distance between two end faces of an angle part and the intersection point shafts of two inner or two outer end faces, which has the advantages of simple structure, easy manufacture, low cost, simple operation, high measurement speed and low professional level requirement on measuring staff, and is more suitable for detecting and measuring large-scale single-angle arc-shaped bent angle parts. The distance measuring device comprises a base plate, an L-shaped step positioning block, an angle positioning block, a first fixed shaft, a pressing mechanism and a vernier caliper; the foundation plate is provided with a T-shaped key groove and an inclined T-shaped key groove, the T-shaped key groove and the inclined T-shaped key groove are intersected to form an angle of 45 degrees, and an intersection point A is close to one end of the foundation plate; the angle positioning block is provided with an L-shaped step in the length direction, one end of the angle positioning block stretches out of a protruding block with the upper end face flush with the horizontal plane of the L-shaped step, the protruding block is provided with a vertical mounting hole with the central axis positioned on the extending plane of the L-shaped step, the angle positioning block is rotatably fixed on the foundation plate through a first fixed shaft fixed in the fixed hole on the foundation plate, the vernier caliper comprises a main scale and a rectangular main fixing seat, the main scale comprises a long main scale and a rectangular main scale, the end face of the main scale close to the L-shaped step is flush with the extending plane of the step of the main fixing seat, the main scale is fixed on the upper end face of the main fixing seat or a protruding block embedded in the groove of the end face of the main step, the zero line of the vernier caliper is coincident with the zero line of the vernier caliper, the vernier caliper comprises a main scale and a vernier caliper, the upper end face of the vernier fixing seat is provided with a sliding groove which is tightly assembled with the main fixing seat and can slide, the lower end of one end of the main fixing seat, which is close to the L-shaped step positioning block, extends out of a T-shaped key which is matched with a T-shaped key groove of the foundation plate, an inclined T-shaped key which is matched with an inclined T-shaped key groove of the foundation plate is fixed in the middle of the lower end of the vernier fixing seat, the main fixing seat is slidably arranged in the sliding groove of the vernier fixing seat, the main fixing seat and the vernier fixing seat are respectively slidably assembled in the T-shaped key groove and the inclined T-shaped key groove of the foundation plate, during testing, a tested part is placed on a step of the L-shaped step positioning block and is positioned by an angle po