CN111947541A

CN111947541A - Trapezoidal table size detection device and detection method

Info

Publication number: CN111947541A
Application number: CN202010666533.9A
Authority: CN
Inventors: 徐旭松; 朱敏浩; 叶超; 孙志英
Original assignee: Jiangsu University of Technology
Current assignee: Jiangsu University of Technology
Priority date: 2020-07-10
Filing date: 2020-07-10
Publication date: 2020-11-17
Anticipated expiration: 2040-07-10
Also published as: CN111947541B

Abstract

The invention relates to a detection device, in particular to a trapezoid table size detection device and a detection method, wherein the trapezoid table size detection device comprises a measurement substrate, a part to be detected is placed on the measurement substrate, the part to be detected is a trapezoid table, an included angle formed by intersecting extension lines of two oblique sides of a trapezoid of the cross section of the trapezoid table is an oblique angle, a left-right sliding measurement plate is slidably arranged on the measurement substrate, an up-down sliding measurement plate is slidably arranged on the left-right sliding measurement plate, a right-side sliding measurement plate, a left-side sliding measurement plate and a middle main measurement plate are slidably arranged on the up-down sliding measurement plate, a right-side auxiliary measurement head is arranged on the right-side sliding measurement plate, the left measurement plate is provided with a left-side auxiliary measurement head, and the middle main measurement plate is provided with a middle main measurement head.

Description

Trapezoidal table size detection device and detection method

Technical Field

The present disclosure relates to inspection devices, and particularly to a device and a method for inspecting a dimension of a trapezoid table.

Background

With the continuous development of scientific technology, the requirements on the aspect of measurement technology are higher and higher while the modern production technology is continuously improved, the requirements on the aspects with low measurement requirements in the past are also continuously improved, for example, the measurement of bevel angle and the measurement of inclination, etc., the original measurement requirements on the aspects are not very high, only the traditional measurement devices such as a vernier caliper, an angle measurement ruler, etc. are used, the vernier caliper can measure the total length of a bevel and the length of the large end of the bevel, the angle measurement ruler can measure the angle of the bevel, then the length of the small end of the bevel is calculated through mathematical calculation, then the size of the inclination is calculated by adopting an inclination formula, whether the comparison requirements meet the requirements or not is judged, in general, the measurement method can accurately measure the inclination, but the measurement cannot be continuously carried out when the structure is relatively complex or parts are relatively large and exceed the measurement range of the ruler, therefore, the traditional measuring device and method are difficult to comprehensively detect the inclination of various inclined parts, other measuring tools are often needed, so that the measurement is quite inconvenient, the efficiency is low, and the precision is not high. The traditional measuring device and some existing measuring devices have certain problems, and in order to improve the detection precision and efficiency and reduce the cost, the novel trapezoidal table size detection device provided by the invention can overcome the existing problems, so that the measurement is more efficient, the operation is simple, the result is accurate, the application range is wider, and the device has a certain market popularization prospect.

Disclosure of Invention

The invention provides a high-precision trapezoidal table size detection device and a detection method, aiming at solving the problem that the existing trapezoidal table size detection precision is low in the prior art.

The technical scheme adopted by the invention for solving the technical problems is as follows:

a size detection device for a trapezoid table comprises a measurement substrate, a part to be detected is placed on the measurement substrate, the part to be detected is a trapezoid table, an included angle formed by intersecting extension lines of two oblique sides of the trapezoid table in the cross section is an oblique angle, a left-right sliding measurement plate is slidably arranged on the measurement substrate, the left-right sliding measurement plate slides along the Y direction, an up-down sliding measurement plate is slidably arranged on the left-right sliding measurement plate, the up-down sliding measurement plate slides along the Z direction, a right-side sliding measurement plate, a left-side sliding measurement plate and a middle main measurement plate are slidably arranged on the up-down sliding measurement plate along the X direction, a right measurement plate is slidably arranged on the right-side sliding measurement plate, a left measurement plate is slidably arranged on the left-side sliding measurement plate, the right measurement plate and the left measurement plate slide along the Y direction, a right-side auxiliary measurement rod is fixed on the right measurement plate, the left side auxiliary measuring rod is fixed on the left side measuring plate, the left side auxiliary measuring head is fixed on the left side auxiliary measuring rod, the middle main measuring rod is fixed on the middle main measuring plate, and the middle main measuring head is fixed on the middle main measuring rod.

Furthermore, the measuring substrate is placed on the horizontal measuring platform, two side surfaces of the measuring substrate are provided with U-shaped grooves of the substrate, substrate guide grooves are formed in proper positions of the upper surface and the lower surface of the U-shaped grooves of the substrate, the lower end of the left-right sliding measuring plate is provided with a substrate contact surface which is in contact with the U-shaped grooves of the substrate on the measuring substrate, substrate guide bosses which are matched with the substrate guide grooves on the measuring substrate are arranged on the substrate contact surface, the left-right sliding measuring plate slides left and right in the measuring substrate through the matching, the upper end of one side of the left-right sliding measuring plate, which is provided with the U-shaped grooves of the left-right sliding measuring plate, is provided with left-right sliding plate guide grooves at proper positions of the two side surfaces of the U-shaped grooves of the left-right sliding measuring plate.

Furthermore, one end of the up-down sliding measuring plate is provided with a left-right sliding measuring plate contact surface which is contacted with a left-right sliding measuring plate U-shaped groove on the left-right sliding measuring plate, a left-right sliding measuring plate guide boss which is matched with a left-right sliding measuring plate guide groove on the left-right sliding measuring plate is arranged on the left-right sliding measuring plate contact surface, the up-down sliding measuring plate slides up and down in the left-right sliding measuring plate through the matching, the right side surface of the up-down sliding measuring plate is provided with an up-down sliding measuring plate right side U-shaped groove, the two side surfaces of the up-down sliding measuring plate right side U-shaped groove are provided with an up-down sliding measuring plate right side guide groove, the up-down sliding measuring plate is contacted with the left-right sliding measuring plate, the two sides of the up-down sliding measuring plate fixing plate are provided with up-down sliding measuring plate fixing screw holes, the left side of the up-down sliding measuring plate is provided with an up-down sliding measuring plate left side U-shaped groove, the two side surfaces of the up-down sliding measuring plate left side U-shaped groove are provided with an up-down sliding measuring plate left side guide groove, one surface of the up-down sliding measuring plate is provided with an up-down sliding measuring plate U-shaped groove, the two side surfaces of the up-down sliding measuring plate U-shaped groove are provided with an up-down sliding measuring plate guide groove, the right side of the up-down sliding measuring plate is provided with an up-down sliding measuring plate right side scale so as to read right side reading, the left side of the up-down sliding measuring plate is provided with an up-down sliding measuring plate left.

Furthermore, one end of the right side sliding measuring plate is provided with a right side contact surface of the upper and lower sliding measuring plates which are contacted with the right side U-shaped grooves of the upper and lower sliding measuring plates on the upper and lower sliding measuring plates, the right side contact surface of the upper and lower sliding measuring plates is provided with a right side guide boss of the upper and lower sliding measuring plates which are matched with the right side guide grooves of the upper and lower sliding measuring plates on the upper and lower sliding measuring plates, the right side sliding measuring plate slides in the right side surface of the upper and lower sliding measuring plates through the matching, the lower surface of the right side sliding measuring plate is provided with a right side sliding measuring plate U-shaped groove, the two side surfaces of the right side sliding measuring plate U-shaped groove are provided with a right side left sliding measuring plate guide groove, the contact part of the right side sliding measuring plate and the right side surfaces of the upper and lower sliding measuring plates is provided with a right side sliding measuring plate fixing plate, the left side and the right side of the right side sliding measurement plate are provided with right side sliding measurement plate scales.

Furthermore, one end of the left side sliding measuring plate is provided with an upper and lower sliding measuring plate left side contact surface which is contacted with an upper and lower sliding measuring plate left side U-shaped groove on the upper and lower sliding measuring plate, an upper and lower sliding measuring plate left side guide boss which is matched with an upper and lower sliding measuring plate left side guide groove on the upper and lower sliding measuring plate is arranged on the upper and lower sliding measuring plate left side contact surface, the left side sliding measuring plate slides in the upper and lower sliding measuring plate left side surface through the matching, the lower surface of the left side sliding measuring plate is provided with a left side sliding measuring plate U-shaped groove, meanwhile, two side surfaces of the left side sliding measuring plate U-shaped groove are provided with a left side left and right sliding plate guide groove, the contact part of the left side sliding measuring plate and the left side surface of the upper and lower sliding measuring plate is provided with a left side sliding measuring plate fixing screw hole, and two sides, the left and right sides of left side slip measurement board be equipped with left side slip measurement board scale, the right side one end of measuring the board be equipped with the right side slip measurement board contact surface that right side slip measurement board U type groove on the slip measurement board of right side contacted is equipped with on the contact surface of right side slip measurement board with right side slip measurement board guide way matched with right side slip measurement board direction boss on the slip measurement board of right side makes through the above-mentioned cooperation the right side measure the board and be in the right side slip measurement board in slide, the other end of right side measurement board seted up right side auxiliary measuring rod screw hole the right side measurement board with the contact department of right side slip measurement board be equipped with right side measurement board fixed plate, set up right side measurement board fixed screw hole in the both sides of right side measurement board fixed plate.

Further, the one end of right side auxiliary measuring rod be equipped with right side auxiliary measuring rod screw hole matched with right side auxiliary measuring rod thread head on the right side measuring plate, the other end of right side auxiliary measuring rod seted up right side auxiliary measuring head screw hole, the one end of the non-measuring head of right side auxiliary measuring head be equipped with right side auxiliary measuring head screw hole matched with right side auxiliary measuring head thread head on the right side auxiliary measuring rod.

Furthermore, one end of the left measuring plate is provided with a left sliding measuring plate contact surface which is contacted with a left sliding measuring plate U-shaped groove on the left sliding measuring plate, a left sliding measuring plate guide boss which is matched with a left sliding measuring plate guide groove on the left sliding measuring plate is arranged on the left sliding measuring plate contact surface, the left measuring plate slides in the left sliding measuring plate through the matching, the other end of the left measuring plate is provided with a left auxiliary measuring rod threaded hole, a left measuring plate fixing plate is arranged at the contact position of the left measuring plate and the left sliding measuring plate, left measuring plate fixing threaded holes are arranged at two sides of the left measuring plate fixing plate, one end of the left auxiliary measuring rod is provided with a left auxiliary measuring rod threaded head which is matched with the left auxiliary measuring rod threaded hole on the left measuring plate, the other end of the left auxiliary measuring rod is provided with a left auxiliary measuring head threaded hole, one end of a non-measuring head of the left auxiliary measuring head is provided with a left auxiliary measuring head threaded head matched with the left auxiliary measuring head threaded hole on the left auxiliary measuring rod.

Furthermore, one end of the middle main measuring plate is provided with an upper and lower sliding measuring plate contact surface which is contacted with an upper and lower sliding measuring plate U-shaped groove on the upper and lower sliding measuring plates, an upper and lower sliding measuring plate guide boss which is matched with an upper and lower sliding measuring plate guide groove on the upper and lower sliding measuring plates is arranged on the basis of the upper and lower sliding measuring plate contact surfaces, the middle main measuring plate slides in the upper and lower sliding measuring plates through the matching, the other end of the middle measuring plate is provided with a middle main measuring rod threaded hole, a middle main measuring plate fixing plate is arranged at the contact part of the middle main measuring plate and the upper and lower sliding measuring plates, middle main measuring plate fixing threaded holes are arranged at two sides of the middle main measuring plate fixing plate, one end of the middle main measuring rod is provided with a middle main measuring rod threaded head which is matched with the middle main measuring rod threaded hole on the middle main measuring plate, the other end of the middle main measuring rod is provided with a middle main measuring head threaded hole, one end of the non-measuring head of the middle main measuring head is provided with a middle main measuring head threaded head matched with the middle main measuring head threaded hole on the middle main measuring rod, the upper and lower sliding measuring plate fixing threaded holes on the upper and lower sliding measuring plates are matched with upper and lower sliding measuring plate fixing nuts to fix the upper and lower sliding measuring plates on the left and right sliding measuring plates, the left sliding measuring plate fixing threaded hole on the left sliding measuring plate is matched with a left sliding measuring plate fixing nut to fix the left sliding measuring plate in the left side surface of the upper and lower sliding measuring plate, the right sliding measuring plate fixing threaded hole on the right sliding measuring plate is matched with a right sliding measuring plate fixing nut to fix the right sliding measuring plate in the right side surface of the upper and lower sliding measuring plate, the right side on the right side measure the board right side and measure board fixation screw hole cooperation and have right side to measure the board fixation nut and make the right side measure the board and fix the right side slip measurement board on, the left side measure the board on the board left side and measure board fixation screw hole cooperation and have left side to measure board fixation nut and make the left side measure the board and fix the left side slip measurement board on, the middle main board fixation screw hole cooperation of measuring on the board of middle main have middle main to measure board fixation nut and make the middle main board of measuring fix the upper and lower slip measurement board on, the part that awaits measuring place the measurement base plate on.

A detection method of the trapezoid table size detection device comprises the following steps:

the method comprises the following steps: firstly, a measuring substrate is placed on a horizontal measuring table, then a part to be measured is placed on the measuring substrate, then a left-right sliding measuring plate and the measuring substrate are assembled to enable the left-right sliding measuring plate to slide left and right on the measuring substrate, then an up-down sliding measuring plate and a left-right sliding measuring plate are assembled to enable an up-down sliding measuring plate to slide up and down on the left-right sliding measuring plate, the up-down sliding measuring plate is fixed by an up-down sliding measuring plate fixing nut, then the right-side sliding measuring plate and the up-down sliding measuring plate are assembled to enable the right-side sliding measuring plate to slide along the Y direction on the right side of the up-down sliding measuring plate, then the left-side sliding measuring plate and the up-down sliding measuring plate are assembled to enable the left-side sliding measuring plate to slide along the Y direction on the left side of the up-down sliding measuring plate, and then a middle main measuring plate and the up-down sliding measuring, the left measuring plate and the right sliding measuring plate are assembled, so that the left measuring plate can slide left and right on the left sliding measuring plate;

step two: when the total length of a part to be measured is measured, the right auxiliary measuring rod and the right measuring plate need to be assembled at the moment, then the right auxiliary measuring head and the right auxiliary measuring rod are assembled, then the left auxiliary measuring rod and the left measuring plate are assembled, then the left auxiliary measuring head and the left auxiliary measuring rod are assembled, the positions of the measuring plates are adjusted, the left auxiliary measuring head and the right auxiliary measuring head are respectively contacted with a large end plane and a small end plane of the part to be measured, then the right measuring plate is fixed through a right measuring plate fixing nut, the left measuring plate is fixed through a left measuring plate fixing nut, and then numerical values are read;

step three: when the length of the large end of the part to be measured is measured, the right auxiliary measuring rod and the right measuring plate are assembled, the right auxiliary measuring head and the right auxiliary measuring rod are assembled later, or the left auxiliary measuring rod and the left measuring plate are assembled, the left auxiliary measuring head and the left auxiliary measuring rod are assembled later, then the middle main measuring rod and the middle main measuring plate are assembled, then the middle main measuring head and the middle main measuring rod are assembled, the position of each measuring plate is adjusted, the right auxiliary measuring head or the left auxiliary measuring head and the middle main measuring head are respectively contacted with the oblique angle of one side of the large end of the part to be measured, then the right measuring plate is fixed through a right measuring plate fixing nut, the left measuring plate is fixed through a left measuring plate fixing nut, the middle main measuring plate is fixed through a middle main measuring plate fixing nut, and then the numerical value is read;

step four: when measuring the length and the oblique angle of the small end of the inclined plane of the part to be measured, at the moment, the part to be measured needs to be firstly rotated by an angle, two inclined planes of the part to be measured are sequentially rotated and are parallel to the side surface of the measuring substrate, the inclined plane parallel to the side surface of the measuring substrate is a reference inclined plane, then the right auxiliary measuring rod and the right measuring plate are assembled, then the right auxiliary measuring head and the right auxiliary measuring rod are assembled, or the left auxiliary measuring rod and the left measuring plate are assembled, then the left auxiliary measuring head and the left auxiliary measuring rod are assembled, then the middle main measuring rod and the middle main measuring plate are assembled, then the middle main measuring head and the middle main measuring rod are assembled, the position of each measuring plate is adjusted, one measuring head is firstly contacted with the oblique angle opposite to the reference inclined plane of the part to be measured, then the measuring head corresponding to the measuring plate is, the measuring head is prevented from changing in the later measuring process, then another measuring head and a part to be measured are contacted with the reference inclined plane, then the measuring head is locked by a fixing nut corresponding to the measuring plate, the numerical value is read, at the moment, the numerical value after rotating for a certain angle is also read, the rotated angle can be obtained by adopting a right triangle, the rotated angle of the inclined plane at one side is alpha, the rotated angle of the inclined plane at the other side is beta, the oblique angle r is alpha + beta, and the small end length of the inclined plane of the part to be measured can be calculated after the oblique angle is calculated.

Step five: and calculating the inclination through the obtained total length, the large end length and the small end length of the part to be measured.

Has the advantages that:

(1) according to the size detection device for the trapezoidal table, the left and right guide bosses of the up-down sliding measurement plate on the left and right sliding measurement plates are matched with the left and right guide grooves of the up-down sliding measurement plate, so that the sliding is more reliable, and the measurement is more accurate indirectly;

(2) according to the size detection device for the trapezoidal table, the guide boss of the upper and lower sliding measurement plates on the middle measurement plate is matched with the guide groove of the upper and lower sliding measurement plates, so that the sliding is more reliable, and the measurement is more accurate indirectly;

(3) according to the size detection device for the trapezoidal table, fixing modes such as the fixing nut of the upper and lower sliding measuring plate, the fixing nut of the left sliding measuring plate, the fixing nut of the right measuring plate, the fixing nut of the left measuring plate, the fixing nut of the middle main measuring plate and the like are adopted, so that the fixing is more reliable, and the measurement is more accurate indirectly;

(4) the trapezoid table size detection device can overcome the mode that the measurement requirement can be met only by adopting a plurality of measuring instruments in the traditional measurement method, the size of the oblique angle of the inclined plane and the specific inclination can be accurately measured only by adopting the trapezoid table size detection device, the measurement is relatively simple, the limitation is relatively small, the measurement is more convenient for measurement personnel, the problem that the error of the measurement value of different measurement personnel is too large is also solved, the influence of manual operation is basically ignored, the detection precision is high, the data is accurate, and compared with other high-precision measurement instruments, the trapezoid table size detection device is simple in structure and lower in cost.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.

FIG. 1 is a schematic perspective view of a trapezoid table size detection device according to the present invention;

FIG. 2 is an exploded view of a first perspective of a three-dimensional configuration of a trapezoid table size detection apparatus according to the present invention;

FIG. 3 is an exploded perspective view of a second perspective of the three-dimensional configuration of the apparatus for detecting the size of a trapezoid table according to the present invention;

FIG. 4 is a schematic perspective view of a dimension measuring apparatus for a trapezoid table for measuring a length of a large end according to the present invention;

FIG. 5 is a schematic perspective view of a dimension measuring apparatus for a trapezoid table according to the present invention;

FIG. 6 is a schematic perspective view of an embodiment of a trapezoidal stage dimension measuring device of the present invention for indirectly measuring bevel angle;

FIG. 7 is a schematic perspective view of another embodiment of a trapezoid table size detection apparatus for indirectly measuring an oblique angle of an inclined plane according to the present invention;

FIG. 8 is a definition of bevel angle;

FIG. 9 is a state diagram of the part to be measured after rotating to one side;

fig. 10 is a state diagram of the part to be measured after rotating to the other side.

Wherein, 1, a measuring substrate, 1-1, a substrate U-shaped groove, 1-2, a substrate guide groove, 2, a left-right sliding measuring plate, 2-1, a substrate contact surface, 2-2, a substrate guide boss, 2-3, a left-right sliding measuring plate U-shaped groove, 2-4, a left-right sliding measuring plate guide groove, 3, an up-down sliding measuring plate, 3-1, a left-right sliding measuring plate contact surface, 3-2, a left-right sliding measuring plate guide boss, 3-3, an up-down sliding measuring plate right side U-shaped groove, 3-4, an up-down sliding measuring plate right side guide groove, 3-5, an up-down sliding measuring plate fixing plate, 3-6, an up-down sliding measuring plate fixing threaded hole, 3-7, an up-down sliding measuring plate left side U-shaped groove, 3-8, an up-down sliding measuring plate left side guide groove, 3-9 parts of vertical sliding measuring plate U-shaped groove, 3-10 parts of vertical sliding measuring plate guide groove, 3-11 parts of vertical sliding measuring plate right scale, 3-12 parts of vertical sliding measuring plate left scale, 4 parts of right sliding measuring plate, 4-1 parts of vertical sliding measuring plate right contact surface, 4-2 parts of vertical sliding measuring plate right guide boss, 4-3 parts of right sliding measuring plate U-shaped groove, 4-4 parts of right sliding measuring plate guide groove, 4-5 parts of right sliding measuring plate fixing plate, 4-6 parts of right sliding measuring plate fixing threaded hole, 4-7 parts of right sliding measuring plate scale, 5 parts of left sliding measuring plate, 5-1 parts of vertical sliding measuring plate left contact surface, 5-2 parts of vertical sliding measuring plate left guide boss, 5-3 parts of vertical sliding measuring plate left contact surface, A left side sliding measuring plate U-shaped groove, 5-4 parts of a left side sliding measuring plate guide groove, 5-5 parts of a left side sliding measuring plate fixing plate, 5-6 parts of a left side sliding measuring plate fixing threaded hole, 5-7 parts of a left side sliding measuring plate scale, 6 parts of a right measuring plate, 6-1 parts of a right side sliding measuring plate contact surface, 6-2 parts of a right side sliding measuring plate guide boss, 6-3 parts of a right side auxiliary measuring rod threaded hole, 6-4 parts of a right measuring plate fixing plate, 6-5 parts of a right measuring plate fixing threaded hole, 7 parts of a right side auxiliary measuring rod, 7-1 parts of a right side auxiliary measuring rod threaded head, 7-2 parts of a right side auxiliary measuring head threaded hole, 8 parts of a right side auxiliary measuring head, 8-1 parts of a right side auxiliary measuring head threaded head, 9 parts of a left measuring plate, 9-1 parts of, 9-2 parts of a left sliding measuring plate guide boss, 9-3 parts of a left auxiliary measuring rod threaded hole, 9-4 parts of a left measuring plate fixing plate, 9-5 parts of a left measuring plate fixing threaded hole, 10 parts of a left auxiliary measuring rod, 10-1 parts of a left auxiliary measuring rod threaded head, 10-2 parts of a left auxiliary measuring head threaded hole, 11 parts of a left auxiliary measuring head, 11-1 parts of a left auxiliary measuring head threaded head, 12 parts of a middle main measuring plate, 12-1 parts of an upper and lower sliding measuring plate contact surface, 12-2 parts of an upper and lower sliding measuring plate guide boss, 12-3 parts of a middle main measuring rod threaded hole, 12-4 parts of a middle main measuring plate fixing threaded hole, 12-5 parts of a middle main measuring plate fixing threaded hole, 13 parts of a middle main measuring rod, 13-1 parts of a middle main measuring rod threaded head, 13-2 parts of a, The device comprises a middle main measuring head threaded hole, 14 parts, a middle main measuring head threaded head, 14-1 parts, 15 parts, a vertical sliding measuring plate fixing nut, 16 parts, a left side sliding measuring plate fixing nut, 17 parts, a right side sliding measuring plate fixing nut, 18 parts, a right side measuring plate fixing nut, 19 parts, a left side measuring plate fixing nut, 20 parts, a middle main measuring plate fixing nut, 21 parts and parts to be measured.

Detailed Description

Referring to fig. 1 to 3, a trapezoidal table size detection device comprises a measurement substrate 1, a part to be detected 21 is placed on the measurement substrate 1, the part to be detected 21 is a trapezoidal table, an included angle formed by intersecting extension lines of two oblique sides of a trapezoidal cross section of the trapezoidal table is an oblique angle, a left-right sliding measurement plate 2 is slidably arranged on the measurement substrate 1, the left-right sliding measurement plate 2 slides along the Y direction, a vertical sliding measurement plate 3 is slidably arranged on the left-right sliding measurement plate 2, the vertical sliding measurement plate 3 slides along the Z direction, a right-side sliding measurement plate 4, a left-side sliding measurement plate 5 and a middle main measurement plate 12 are slidably arranged on the vertical sliding measurement plate 3 along the X direction, a right measurement plate 6 is slidably arranged on the right-side sliding measurement plate 4, a left measurement plate 9 is slidably arranged on the left-side sliding measurement plate 5, the right measurement plate 6 and the left measurement plate 9 slide along the Y direction, a right auxiliary measurement rod 7 is, the right auxiliary measuring rod 7 is fixed with a right auxiliary measuring head 8, the left measuring plate 9 is fixed with a left auxiliary measuring rod 10, the left auxiliary measuring rod 10 is fixed with a left auxiliary measuring head 11, the middle main measuring plate 12 is fixed with a middle main measuring rod 13, and the middle main measuring rod 13 is fixed with a middle main measuring head 14.

A measuring substrate 1 is placed on a horizontal measuring platform, two side surfaces of the measuring substrate 1 are provided with substrate U-shaped grooves 1-1, meanwhile, the proper positions of the upper and lower surfaces of the U-shaped groove 1-1 of the substrate are provided with substrate guide grooves 1-2, the lower end of the left-right sliding measuring plate 2 is provided with a substrate contact surface 2-1 which is contacted with the U-shaped groove 1-1 of the substrate 1, a substrate guide boss 2-2 matched with the substrate guide groove 1-2 on the measuring substrate 1 is arranged on the substrate contact surface 2-1, so that the left-right sliding measuring plate 2 slides left and right in the measuring substrate 1, the upper end of one side of the left-right sliding measuring plate 2 with the substrate contact surface 2-1 is provided with a left-right sliding measuring plate U-shaped groove 2-3, and meanwhile, left and right sliding measuring plate guide grooves 2-4 are formed in appropriate positions of two side surfaces of the U-shaped groove 2-3 of the left and right sliding measuring plate.

One end of the up-down sliding measuring plate 3 is provided with a left-right sliding measuring plate contact surface 3-1 which is contacted with a left-right sliding measuring plate U-shaped groove 2-3 on the left-right sliding measuring plate 2, a left-right sliding measuring plate guide boss 3-2 which is matched with a left-right sliding measuring plate guide groove 2-4 on the left-right sliding measuring plate 2 is arranged on the left-right sliding measuring plate contact surface 3-1, so that the up-down sliding measuring plate 3 slides up and down in the left-right sliding measuring plate 2, the right side surface of the up-down sliding measuring plate 3 is provided with an up-down sliding measuring plate right side U-shaped groove 3-3, the two side surfaces of the up-down sliding measuring plate right side U-shaped groove 3-3 are provided with an up-down sliding measuring plate right side guide groove 3-4, the up-down sliding measuring plate 3 is contacted with the left-right, the two sides of the upper and lower sliding measuring plate fixing plates 3-5 are provided with upper and lower sliding measuring plate fixing threaded holes 3-6, the left side surface of the upper and lower sliding measuring plate 3 is provided with an upper and lower sliding measuring plate left U-shaped groove 3-7, meanwhile, the two side surfaces of the left U-shaped groove 3-7 of the upper and lower sliding measuring plates are provided with left guide grooves 3-8 of the upper and lower sliding measuring plates, one surface of the upper and lower sliding measuring plates 3 is provided with U-shaped grooves 3-9 of the upper and lower sliding measuring plates, meanwhile, the two side surfaces of the U-shaped grooves 3-9 of the upper and lower sliding measuring plates are provided with guide grooves 3-10 of the upper and lower sliding measuring plates, the right sides of the upper and lower sliding measuring plates 3 are provided with right-side scales 3-11 of the upper and lower sliding measuring plates to facilitate reading of right-side readings, and the left sides of the upper and lower sliding measuring plates 3 are provided with left-side scales 3-12 of the upper and lower sliding measuring plates to facilitate reading of left-side readings.

One end of the right side sliding measuring plate 4 is provided with an upper and lower sliding measuring plate right side contact surface 4-1 which is contacted with an upper and lower sliding measuring plate right side U-shaped groove 3-3 on the upper and lower sliding measuring plate 3, the upper and lower sliding measuring plate right side contact surface 4-1 is provided with an upper and lower sliding measuring plate right side guide boss 4-2 which is matched with an upper and lower sliding measuring plate right side guide groove 3-4 on the upper and lower sliding measuring plate 3, the right side sliding measuring plate 4 slides in the upper and lower sliding measuring plate 3 right side surface through the matching, the lower surface of the right side sliding measuring plate 4 is provided with a right side sliding measuring plate U-shaped groove 4-3, the two side surfaces of the right side sliding measuring plate U-shaped groove 4-3 are provided with a right side left sliding measuring plate guide groove 4-4, the contact part of the right side sliding measuring plate 4 and the right side surface of the upper and, two sides of the right sliding measuring plate fixing plate 4-5 are provided with right sliding measuring plate fixing threaded holes 4-6, and the left side and the right side of the right sliding measuring plate 4 are provided with right sliding measuring plate scales 4-7.

One end of the left sliding measuring plate 5 is provided with an upper and lower sliding measuring plate left side contact surface 5-1 which is contacted with an upper and lower sliding measuring plate left side U-shaped groove 3-7 on the upper and lower sliding measuring plate, an upper and lower sliding measuring plate left side guide boss 5-2 which is matched with an upper and lower sliding measuring plate left side guide groove 3-8 on the upper and lower sliding measuring plate 3 is arranged on the upper and lower sliding measuring plate left side contact surface 5-1, so that the left sliding measuring plate 5 slides in the upper and lower sliding measuring plate 3 left side surface, the lower surface of the left sliding measuring plate 5 is provided with a left sliding measuring plate U-shaped groove 5-3, the two side surfaces of the left sliding measuring plate U-shaped groove 5-3 are provided with a left sliding plate guide groove 5-4, and the contact part of the left sliding measuring plate 5 and the left side surface of the upper and lower sliding measuring plate, the left side sliding measuring plate fixing threaded holes 5-6 are arranged on two sides of a left side sliding measuring plate fixing plate 5-5, the left side and the right side of the left side sliding measuring plate 5 are provided with left side sliding measuring plate scales 5-7, one end of a right side measuring plate 6 is provided with a right side sliding measuring plate contact surface 6-1 which is contacted with a right side sliding measuring plate U-shaped groove 4-3 on the right side sliding measuring plate 4, a right side sliding measuring plate guide boss 6-2 which is matched with a right side sliding measuring plate guide groove 4-4 on the right side sliding measuring plate 4 is arranged on the right side sliding measuring plate contact surface 6-1, so that the right side measuring plate 6 slides in the right side sliding measuring plate 4, the other end of the right side measuring plate 6 is provided with a right side auxiliary measuring rod threaded hole 6-3, and the contact part of the right side sliding measuring plate 6 and the right side sliding measuring plate, and right measuring plate fixing threaded holes 6-5 are formed in two sides of the right measuring plate fixing plate 6-4.

One end of the right auxiliary measuring rod 7 is provided with a right auxiliary measuring rod thread head 7-1 matched with the right auxiliary measuring rod thread hole 6-3 on the right measuring plate 6, the other end of the right auxiliary measuring rod 7 is provided with a right auxiliary measuring head thread hole 7-2, and one end of the non-measuring head of the right auxiliary measuring head 8 is provided with a right auxiliary measuring head thread head 8-1 matched with the right auxiliary measuring head thread hole 7-2 on the right auxiliary measuring rod 7.

One end of the left measuring plate 9 is provided with a left sliding measuring plate contact surface 9-1 which is contacted with a left sliding measuring plate U-shaped groove 5-3 on the left sliding measuring plate 5, a left sliding measuring plate guide boss 9-2 which is matched with the left sliding measuring plate guide groove 5-4 on the left sliding measuring plate 5 is arranged on the left sliding measuring plate contact surface 9-1, the left measuring plate 9 slides in the left sliding measuring plate 5 through the matching, the other end of the left measuring plate 9 is provided with a left auxiliary measuring rod threaded hole 9-3, a left measuring plate fixing plate 9-4 is arranged at the contact part of the left measuring plate 9 and the left sliding measuring plate 5, both sides of the left measuring plate fixing plate 9-4 are provided with left measuring plate fixing threaded holes 9-5, one end of the left auxiliary measuring rod 10 is provided with a left auxiliary measuring plate which is matched with the left auxiliary measuring rod threaded hole 9-3 on the left measuring plate 9 The measuring rod is provided with a threaded head 10-1, the other end of the left auxiliary measuring rod 10 is provided with a left auxiliary measuring head threaded hole 10-2, and one end of the left auxiliary measuring head 11, which is not a measuring head, is provided with a left auxiliary measuring head threaded head 11-1 matched with the left auxiliary measuring head threaded hole 10-2 on the left auxiliary measuring rod 10.

One end of the middle main measuring plate 12 is provided with an upper and lower sliding measuring plate contact surface 12-1 which is contacted with an upper and lower sliding measuring plate U-shaped groove 3-9 on the upper and lower sliding measuring plate 3, an upper and lower sliding measuring plate guide lug boss 12-2 which is matched with an upper and lower sliding measuring plate guide groove 3-10 on the upper and lower sliding measuring plate 3 is arranged on the basis of the upper and lower sliding measuring plate contact surface 12-1, the middle main measuring plate 12 slides in the upper and lower sliding measuring plates 3 through the matching, the other end of the middle measuring plate 12 is provided with a middle main measuring rod threaded hole 12-3, a middle main measuring plate fixing plate 12-4 is arranged at the contact part of the middle main measuring plate 12 and the upper and lower sliding measuring plate 3, two sides of the middle main measuring plate fixing plate 12-4 are provided with middle main measuring plate fixing threaded holes 12-, one end of the middle main measuring rod 13 is provided with a middle main measuring rod thread head 13-1 matched with the middle main measuring rod thread hole 12-3 on the middle main measuring plate 12, the other end of the middle main measuring rod 13 is provided with a middle main measuring head thread hole 13-2, one end of the non-measuring head of the middle main measuring head 14 is provided with a middle main measuring head thread head 14-1 matched with the middle main measuring head thread hole 13-2 on the middle main measuring rod 13, the up-down sliding measuring plate fixing thread hole 3-6 on the up-down sliding measuring plate 3 is matched with an up-down sliding measuring plate fixing nut 15 to fix the up-down sliding measuring plate 3 on the left-right sliding measuring plate 2, the left-side sliding measuring plate fixing thread hole 5-6 on the left-side sliding measuring plate 5 is matched with a left-side sliding measuring plate fixing nut 16 to fix the left-side sliding measuring plate 5 in the, the right sliding measuring plate fixing threaded hole 4-6 on the right sliding measuring plate 4 is matched with a right sliding measuring plate fixing nut 17 to fix the right sliding measuring plate 4 in the right side surface of the upper and lower sliding measuring plates 3, the right measuring plate fixing threaded hole 6-5 on the right measuring plate 6 is matched with a right measuring plate fixing nut 18 to fix the right measuring plate 6 on the right sliding measuring plate 4, the left measuring plate fixing threaded hole 9-5 on the left measuring plate 9 is matched with a left measuring plate fixing nut 19 to fix the left measuring plate 9 on the left sliding measuring plate 5, the middle main measuring plate fixing threaded hole 12-5 on the middle main measuring plate 12 is matched with a middle main measuring plate fixing nut 20 to fix the middle main measuring plate 12 on the upper and lower sliding measuring plates 3, and the part to be measured 21 is placed on the measuring substrate 1.

the method comprises the following steps: firstly, a measuring substrate 1 is placed on a horizontal measuring table, then a part 21 to be measured is placed on the measuring substrate 1, then a left-right sliding measuring plate 2 and the measuring substrate 1 are assembled to enable the left-right sliding measuring plate to slide on the measuring substrate 1, then an up-down sliding measuring plate 3 and the left-right sliding measuring plate 2 are assembled to enable the up-down sliding measuring plate 3 to slide up and down on the left-right sliding measuring plate 2, the up-down sliding measuring plate 3 is fixed by an up-down sliding measuring plate fixing nut 15, then a right-side sliding measuring plate 4 and the up-down sliding measuring plate 3 are assembled to enable the right-side sliding measuring plate 4 to slide along the Y direction on the right side of the up-down sliding measuring plate 3, then a left-side sliding measuring plate 5 and the up-down sliding measuring plate 3 are assembled to enable the left-side sliding measuring plate 5 to slide along the Y direction on the left side of the up-down sliding measuring plate 3, then, the middle main measuring plate 12 and the up-down sliding measuring plate 3 are assembled to be capable of sliding on the up-down sliding measuring plate 3, then the right measuring plate 6 and the right sliding measuring plate 4 are assembled to be capable of sliding the right measuring plate 6 on the right sliding measuring plate 4 left and right, then the left measuring plate 9 and the left sliding measuring plate 5 are assembled to be capable of sliding the left measuring plate 9 on the left sliding measuring plate 5 left and right;

step two: as shown in fig. 5, when the total length of the part to be measured 21 is measured, the right auxiliary measuring rod 7 and the right measuring plate 6 need to be assembled at this time, then the right auxiliary measuring head 8 and the right auxiliary measuring rod 7 are assembled, then the left auxiliary measuring rod 10 and the left measuring plate 9 are assembled, then the left auxiliary measuring head 11 and the left auxiliary measuring rod 10 are assembled, the positions of the measuring plates are adjusted, the left auxiliary measuring head 11 and the right auxiliary measuring head 8 are respectively contacted with the large end plane and the small end plane of the part to be measured 21, then the right measuring plate 6 is fixed by the right measuring plate fixing nut 18, the left measuring plate 9 is fixed by the left measuring plate fixing nut 19, and then the numerical value is read;

step three: as shown in fig. 4, when measuring the length of the large end of the to-be-measured part 21, it is only necessary to assemble the right auxiliary measuring rod 7 and the right measuring plate 6, then assemble the right auxiliary measuring head 8 and the right auxiliary measuring rod 7, or assemble the left auxiliary measuring rod 10 and the left measuring plate 9, then assemble the left auxiliary measuring head 11 and the left auxiliary measuring rod 10, then assemble the middle main measuring rod 13 and the middle main measuring plate 12, then assemble the middle main measuring head 14 and the middle main measuring rod 13, adjust the position of each measuring plate, contact the right auxiliary measuring head 8 or the left auxiliary measuring head 11 and the middle main measuring head 14 with the oblique angle of one side of the large end of the to-be-measured part 21, then fix the right measuring plate 6 by the right measuring plate fixing nut 18, fix the left measuring plate 9 by the left measuring plate fixing nut 19, fix the middle main measuring plate 12 by the middle main measuring plate fixing nut 20, then reading the numerical value;

step four: as shown in fig. 6 to 10, when measuring the length and the oblique angle of the small end of the inclined plane of the to-be-measured part 21, at this time, the to-be-measured part 21 needs to be rotated by an angle, so that the two inclined planes of the to-be-measured part 21 are sequentially rotated and parallel to the side surface of the measurement substrate 1, the inclined plane parallel to the side surface of the measurement substrate 1 is a reference inclined plane, then the right auxiliary measurement rod 7 and the right measurement plate 6 are assembled, then the right auxiliary measurement head 8 and the right auxiliary measurement rod 7 are assembled, or the left auxiliary measurement rod 10 and the left measurement plate 9 are assembled, then the left auxiliary measurement head 11 and the left auxiliary measurement rod 10 are assembled, then the middle main measurement rod 13 and the middle main measurement plate 12 are assembled, then the middle main measurement head 14 and the middle main measurement rod 13 are assembled, the position of each measurement plate is adjusted, one of the measurement heads is contacted with the oblique angle of, then the measuring head is locked by a fixing nut corresponding to the measuring plate to prevent the measuring head from changing in the subsequent measuring process, then the other measuring head and the part 21 to be measured are contacted with a reference inclined plane, then the measuring head is locked by a fixing nut corresponding to the measuring plate to read a numerical value, at the moment, because the length of a large end is known, the numerical value after being rotated by a certain angle is also read, the rotated angle can be obtained by adopting a right triangle, wherein the rotated angle of the inclined plane at one side is alpha, the rotated angle of the inclined plane at the other side is beta, the oblique angle r is alpha + beta, and the length of the small end of the inclined plane of the part 21 to be measured can be calculated after the oblique angle is calculated. If the trapezoid is an isosceles trapezoid, only one side inclined plane needs to be rotated, and r is 2 alpha.

Step five: calculating the inclination and the formula of the inclination according to the obtained total length, the large end length and the small end length of the part to be measured 21: slope is (large end length-small end length)/2 times total length.

The left-right sliding measuring plate 2 slides left and right on the measuring substrate 1, all parts on the left-right sliding measuring plate 2 slide along with the left-right sliding measuring plate, substrate guide grooves 1-2 are formed in the upper and lower surfaces of a substrate U-shaped groove 1-1 of the measuring substrate 1, substrate guide bosses 2-2 are arranged on the two sides of a substrate contact surface 2-1 of the left-right sliding measuring plate 2 and the substrate U-shaped groove 1-1, the sliding precision can be improved due to the arrangement of the guide bosses and the guide grooves, the measuring precision is improved at the same time, the up-down sliding measuring plate 3 slides up and down on the left-right sliding measuring plate 2, all parts on the up-down sliding measuring plate 3 slide along with the left-right sliding measuring plate, left-right sliding measuring plate guide grooves 2-4 are formed in the left and right surfaces of a left-right sliding measuring plate U-shaped groove 2-3 of the left-right sliding measuring plate 2, and the left-right sliding measuring plate contact surface 3 of the left-right sliding 1, a left-right sliding measuring plate guide boss 3-2 is arranged on each side of the upper-lower sliding measuring plate 3, the arrangement of the guide bosses and the guide grooves can improve the sliding precision and also improve the measuring precision, the right-side sliding measuring plate 4 slides left and right in the right side surface of the upper-lower sliding measuring plate 3, all parts on the right-side sliding measuring plate 4 slide along with the sliding, the left and right sides of a right-side U-shaped groove 3-3 of the upper-lower sliding measuring plate 3 are provided with an upper-lower sliding measuring plate right-side guide groove 3-4, the two sides of a right-side contact surface 4-1 of the upper-lower sliding measuring plate, which is formed by mutually contacting the right-side sliding measuring plate 4 and the right-side U-shaped groove 3-3 of the upper-lower sliding measuring plate, the arrangement of the guide bosses and the guide grooves can improve the sliding precision and also, the left side sliding measurement plate 5 slides left and right in the left side face on the upper and lower sliding measurement plates 3, all parts on the left side sliding measurement plate 5 slide along with the sliding, the left side guide grooves 3-8 of the upper and lower sliding measurement plates are arranged on the left and right sides of the left side U-shaped grooves 3-7 of the upper and lower sliding measurement plates on the upper and lower sliding measurement plates 3, the left side contact face 5-1 of the upper and lower sliding measurement plates, which are in mutual contact with the left side U-shaped grooves 3-7 of the upper and lower sliding measurement plates, is provided with the left side guide bosses 5-2 of the upper and lower sliding measurement plates on the two sides of the left side contact face 5-1 of the upper and lower sliding measurement plates, the arrangement of the guide bosses and the guide grooves can improve the sliding precision and also improve the measurement precision, the middle main measurement plate 12 slides on the upper and lower sliding measurement plates 3, all parts on the middle main measurement plate 12 slide along with the sliding, and the upper and the two sides of the contact surface 12-1 of the upper and lower sliding measuring plates, which are mutually contacted with the middle main measuring plate 12 and the U-shaped grooves 3-9 of the upper and lower sliding measuring plates, are provided with upper and lower sliding measuring plate guide bosses 12-2, the arrangement of the guide bosses and the guide grooves can improve the sliding precision and simultaneously improve the measuring precision, the right measuring plate 6 slides left and right on the right sliding measuring plate 4, all parts on the right measuring plate 6 slide along with the guide bosses, the left and right sides of the U-shaped groove 4-3 of the right sliding measuring plate 4 are provided with right sliding measuring plate guide grooves 4-4, the two sides of the contact surface 6-1 of the right sliding measuring plate 6, which is mutually contacted with the U-shaped groove 4-3 of the right sliding measuring plate 6 and the right sliding measuring plate U-shaped groove 4-3 are provided with right sliding measuring plate guide bosses 6-2, and the, the sliding precision can be improved, meanwhile, the measurement precision is also improved, the left measurement plate 9 slides left and right on the left sliding measurement plate 5, all parts on the left measurement plate 9 slide along with the left measurement plate, left sliding measurement plate guide grooves 5-4 are formed in the left and right sides of a left sliding measurement plate U-shaped groove 5-3 on the left sliding measurement plate 5, left sliding measurement plate guide bosses 9-2 are arranged on the two sides of a left sliding measurement plate contact surface 9-1, which are in mutual contact with the left sliding measurement plate U-shaped groove 5-3, and the arrangement of the guide bosses and the guide grooves can improve the sliding precision and also improve the measurement precision.

In order to ensure the measuring precision, after the adjustment is finished, the main measuring head needs to be slightly larger, so that the length of the large end can be more visually measured when the large end of the part to be measured 21 is measured, when the part is rotated by an angle to be measured, an inclined plane and a side surface of the part to be measured 21 need to be ensured to be parallel, when the measuring head touches a non-parallel plane but only an inclined plane during measurement, the fixing nut is locked after the measuring head is contacted with the inclined plane to prevent the measuring head from being changed, then the other measuring head is adjusted to be contacted with the plane to read the reading.

The length of the small end is limited by space and is difficult to measure, and the length of the small end is finally calculated by measuring the length and the oblique angle of the large end. The invention is suitable for large-scale inspection, and has higher precision and lower cost.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.

Claims

1. A size detection device for a trapezoid table is characterized by comprising a measurement substrate (1), a part (21) to be detected is placed on the measurement substrate (1), the part (21) to be detected is a trapezoid table, an included angle formed by intersecting extension lines of two oblique sides of the trapezoid cross section of the trapezoid table is an oblique angle, a left-right sliding measurement plate (2) is arranged on the measurement substrate (1) in a sliding mode, the left-right sliding measurement plate (2) slides along the Y direction, an upper-lower sliding measurement plate (3) is arranged on the left-right sliding measurement plate (2) in a sliding mode, the upper-lower sliding measurement plate (3) slides along the Z direction, a right-side sliding measurement plate (4), a left-side sliding measurement plate (5) and a middle main plate (12) are arranged on the upper-lower sliding measurement plate (3) in an X-direction in a sliding mode, a right measurement plate (6) is arranged on the right-side sliding measurement plate (4) in a sliding mode, and a, the Y-direction sliding-type measuring instrument is characterized in that the right measuring plate (6) and the left measuring plate (9) slide along the Y direction, the right auxiliary measuring rod (7) is fixed on the right measuring plate (6), the right auxiliary measuring head (8) is fixed on the right auxiliary measuring rod (7), the left auxiliary measuring rod (10) is fixed on the left measuring plate (9), the left auxiliary measuring head (11) is fixed on the left auxiliary measuring rod (10), the middle main measuring rod (13) is fixed on the middle main measuring plate (12), and the middle main measuring head (14) is fixed on the middle main measuring rod (13).

2. The apparatus for detecting the size of a trapezoid table as claimed in claim 1, wherein: the measuring substrate (1) is placed on a horizontal measuring platform, substrate U-shaped grooves (1-1) are formed in two side faces of the measuring substrate (1), substrate guide grooves (1-2) are formed in the upper and lower faces of the substrate U-shaped grooves (1-1), substrate contact faces (2-1) which are in contact with the substrate U-shaped grooves (1-1) in the measuring substrate (1) are arranged at the lower ends of the left-right sliding measuring plates (2), substrate guide bosses (2-2) which are matched with the substrate guide grooves (1-2) in the measuring substrate (1) are arranged on the substrate contact faces (2-1), so that the left-right sliding measuring plates (2) slide left and right in the measuring substrate (1), the upper ends of the sides, provided with the substrate contact faces (2-1), of the left-right sliding measuring plates (2) are provided with left-right sliding measuring plate U-shaped grooves (2-3), and meanwhile, two side surfaces of the U-shaped groove (2-3) of the left-right sliding measuring plate are provided with left-right sliding measuring plate guide grooves (2-4).

3. The apparatus for detecting the size of a trapezoid table as claimed in claim 2, wherein: one end of the up-down sliding measuring plate (3) is provided with a left-right sliding measuring plate contact surface (3-1) which is contacted with a left-right sliding measuring plate U-shaped groove (2-3) on the left-right sliding measuring plate (2), a left-right sliding measuring plate guide boss (3-2) which is matched with a left-right sliding measuring plate guide groove (2-4) on the left-right sliding measuring plate (2) is arranged on the left-right sliding measuring plate contact surface (3-1), so that the up-down sliding measuring plate (3) slides up and down in the left-right sliding measuring plate (2), the right side surface of the up-down sliding measuring plate (3) is provided with an up-down sliding measuring plate right U-shaped groove (3-3), and the two side surfaces of the up-down sliding measuring plate right U-shaped groove (3-3) are provided with an up-down sliding measuring plate right guide groove (3-4), the upper and lower sliding measuring plate (3) and the left and right sliding measuring plate (2) are provided with an upper and lower sliding measuring plate fixing plate (3-5) in a contact way, the two sides of the upper and lower sliding measuring plate fixing plate (3-5) are provided with upper and lower sliding measuring plate fixing threaded holes (3-6), the left side surface of the upper and lower sliding measuring plate (3) is provided with an upper and lower sliding measuring plate left side U-shaped groove (3-7), the two side surfaces of the upper and lower sliding measuring plate left side U-shaped groove (3-7) are provided with an upper and lower sliding measuring plate left side guide groove (3-8), one surface of the upper and lower sliding measuring plate (3) is provided with an upper and lower sliding measuring plate U-shaped groove (3-9), and the two side surfaces of the upper and lower sliding measuring plate U-shaped groove (3-9) are provided with an upper and, the right side of the up-down sliding measuring plate (3) is provided with up-down sliding measuring plate right scale (3-11) to facilitate reading of right side reading, and the left side of the up-down sliding measuring plate (3) is provided with up-down sliding measuring plate left scale (3-12) to facilitate reading of left side reading.

4. The apparatus for detecting the size of a trapezoid table as claimed in claim 3, wherein: one end of the right side sliding measurement plate (4) is provided with an upper and lower sliding measurement plate right side contact surface (4-1) which is contacted with an upper and lower sliding measurement plate right side U-shaped groove (3-3) on the upper and lower sliding measurement plate (3), the upper and lower sliding measurement plate right side contact surface (4-1) is provided with an upper and lower sliding measurement plate right side guide boss (4-2) which is matched with the upper and lower sliding measurement plate right side guide groove (3-4) on the upper and lower sliding measurement plate (3), the right side sliding measurement plate (4) slides in the upper and lower sliding measurement plate (3) right side surface through the matching, the lower surface of the right side sliding measurement plate (4) is provided with a right side sliding measurement plate U-shaped groove (4-3), and the two side surfaces of the right side sliding measurement plate U-shaped groove (4-3) are provided with a right side left sliding measurement plate guide groove (4-4), the contact position of the right side sliding measurement plate (4) and the right side of the upper and lower sliding measurement plates (3) is provided with a right side sliding measurement plate fixing plate (4-5), the two sides of the right side sliding measurement plate fixing plate (4-5) are provided with right side sliding measurement plate fixing threaded holes (4-6), and the left side and the right side of the right side sliding measurement plate (4) are provided with right side sliding measurement plate scales (4-7).

5. The apparatus for detecting the size of a trapezoid table as claimed in claim 4, wherein: one end of the left side sliding measuring plate (5) is provided with an upper and lower sliding measuring plate left side contact surface (5-1) which is contacted with an upper and lower sliding measuring plate left side U-shaped groove (3-7) on the upper and lower sliding measuring plate, an upper and lower sliding measuring plate left side guide boss (5-2) which is matched with an upper and lower sliding measuring plate left side guide groove (3-8) on the upper and lower sliding measuring plate (3) is arranged on the upper and lower sliding measuring plate left side contact surface (5-1), so that the left side sliding measuring plate (5) slides in the upper and lower sliding measuring plate (3) left side surface, the lower surface of the left side sliding measuring plate (5) is provided with a left side sliding measuring plate U-shaped groove (5-3), and the two side surfaces of the left side sliding plate U-shaped groove (5-3) are provided with a left side and right sliding plate guide groove (5, the contact position of the left side surface of the left side sliding measuring plate (5) and the left side surface of the upper and lower sliding measuring plates (3) is provided with a left side sliding measuring plate fixing plate (5-5), both sides of the left side sliding measuring plate fixing plate (5-5) are provided with left side sliding measuring plate fixing threaded holes (5-6), the left and right sides of the left side sliding measuring plate (5) are provided with left side sliding measuring plate scales (5-7), one end of the right measuring plate (6) is provided with a right side sliding measuring plate contact surface (6-1) which is contacted with a right side sliding measuring plate U-shaped groove (4-3) on the right side sliding measuring plate (4), a right side sliding measuring plate guide boss (6-2) which is matched with a right side sliding measuring plate guide groove (4-4) on the right side sliding measuring plate (4) is arranged on the right side sliding measuring plate contact surface (6-1), the right measuring plate (6) slides in the right sliding measuring plate (4), the other end of the right measuring plate (6) is provided with a right auxiliary measuring rod threaded hole (6-3), a right measuring plate fixing plate (6-4) is arranged at the contact position of the right measuring plate (6) and the right sliding measuring plate (4), and right measuring plate fixing threaded holes (6-5) are formed in the two sides of the right measuring plate fixing plate (6-4).

6. The apparatus for detecting the size of a trapezoid table as claimed in claim 5, wherein: the right auxiliary measuring rod (7) is provided with a right auxiliary measuring rod threaded head (7-1) matched with a right auxiliary measuring rod threaded hole (6-3) on the right measuring plate (6), the other end of the right auxiliary measuring rod (7) is provided with a right auxiliary measuring head threaded hole (7-2), one end of a non-measuring head of the right auxiliary measuring head (8) is provided with a right auxiliary measuring head threaded head (8-1) matched with the right auxiliary measuring head threaded hole (7-2) on the right auxiliary measuring rod (7).

7. The apparatus for detecting the size of a trapezoid table as claimed in claim 6, wherein: one end of the left measuring plate (9) is provided with a left sliding measuring plate contact surface (9-1) which is in contact with a left sliding measuring plate U-shaped groove (5-3) on the left sliding measuring plate (5), a left sliding measuring plate guide boss (9-2) which is matched with a left sliding measuring plate guide groove (5-4) on the left sliding measuring plate (5) is arranged on the left sliding measuring plate contact surface (9-1), the left measuring plate 9 is enabled to slide in the left sliding measuring plate 5 through the matching, the other end of the left measuring plate (9) is provided with a left auxiliary measuring rod threaded hole (9-3), and a left measuring plate fixing plate (9-4) is arranged at the contact part of the left measuring plate (9) and the left sliding measuring plate (5), the left side auxiliary measuring head is characterized in that a left measuring plate fixing threaded hole (9-5) is formed in the two sides of a left measuring plate fixing plate (9-4), one end of a left side auxiliary measuring rod (10) is provided with a left side auxiliary measuring rod threaded head (10-1) matched with a left side auxiliary measuring rod threaded hole (9-3) in the left measuring plate (9), the other end of the left side auxiliary measuring rod (10) is provided with a left side auxiliary measuring head threaded hole (10-2), one end of a non-measuring head of the left side auxiliary measuring head (11) is provided with a left side auxiliary measuring head threaded head (11-1) matched with the left side auxiliary measuring head threaded hole (10-2) in the left side auxiliary measuring rod (10).

8. The apparatus for detecting the size of a trapezoid table as claimed in claim 7, wherein: one end of the middle main measuring plate (12) is provided with an upper and lower sliding measuring plate contact surface (12-1) which is contacted with an upper and lower sliding measuring plate U-shaped groove (3-9) on the upper and lower sliding measuring plate (3), an upper and lower sliding measuring plate guide lug boss (12-2) which is matched with an upper and lower sliding measuring plate guide groove (3-10) on the upper and lower sliding measuring plate (3) is arranged on the basis of the upper and lower sliding measuring plate contact surface (12-1), the middle main measuring plate (12) slides in the upper and lower sliding measuring plate (3) through the matching, the other end of the middle measuring plate (12) is provided with a middle main measuring rod threaded hole (12-3), a middle main measuring plate fixing plate (12-4) is arranged at the contact part of the middle main measuring plate (12) and the upper and lower sliding measuring plate (3), middle main measuring plate fixing threaded holes (12-5) are formed in two sides of a middle main measuring plate fixing plate (12-4), a middle main measuring rod threaded head (13-1) matched with a middle main measuring rod threaded hole (12-3) in the middle main measuring plate (12) is arranged at one end of a middle main measuring rod (13), a middle main measuring head threaded hole (13-2) is formed in the other end of the middle main measuring rod (13), a middle main measuring head threaded head (14-1) matched with the middle main measuring head threaded hole (13-2) in the middle main measuring rod (13) is arranged at one end, not a measuring head, of the middle main measuring head (14), of the upper and lower sliding measuring plate fixing threaded holes (3-6) in the upper and lower sliding measuring plate (3) are matched with upper and lower sliding measuring plate fixing nuts (15) to enable the upper and lower sliding measuring plate (3) to be fixed on the left and right sides On the sliding measurement plate (2), a left sliding measurement plate fixing threaded hole (5-6) on the left sliding measurement plate (5) is matched with a left sliding measurement plate fixing nut (16) to fix the left sliding measurement plate (5) in the left side surface of the upper sliding measurement plate (3) and the lower sliding measurement plate (3), a right sliding measurement plate fixing threaded hole (4-6) on the right sliding measurement plate (4) is matched with a right sliding measurement plate fixing nut (17) to fix the right sliding measurement plate (4) in the right side surface of the upper sliding measurement plate (3) and the right sliding measurement plate fixing threaded hole (6-5) on the right measurement plate (6) is matched with a right measurement plate fixing nut (18) to fix the right measurement plate (6) on the right sliding measurement plate (4), and a left measurement plate fixing threaded hole (9-5) on the left measurement plate (9) is matched with a left measurement plate fixing threaded hole (9-5) on the left measurement plate (9) The plate fixing nut (19) enables the left measuring plate (9) to be fixed on the left sliding measuring plate (5), and a middle main measuring plate fixing threaded hole (12-5) in the middle of the middle main measuring plate (12) is matched with a middle main measuring plate fixing nut (20) to enable the middle main measuring plate (12) to be fixed on the up-down sliding measuring plate (3).

9. A method for inspecting a trapezoidal stage size inspection apparatus according to any one of claims 1 to 8, comprising: the method comprises the following steps:

the method comprises the following steps: firstly, a measuring substrate (1) is placed on a horizontal measuring table, then a part (21) to be measured is placed on the measuring substrate (1), then a left-right sliding measuring plate (2) and the measuring substrate (1) are assembled to enable the part to be measured to slide left and right on the measuring substrate (1), then an up-down sliding measuring plate (3) and the left-right sliding measuring plate (2) are assembled to enable the up-down sliding measuring plate (3) to slide up and down on the left-right sliding measuring plate (2), the up-down sliding measuring plate (3) is fixed by an up-down sliding measuring plate fixing nut (15), then a right side sliding measuring plate (4) and the up-down sliding measuring plate (3) are assembled to enable the right side sliding measuring plate (4) to slide along the Y direction on the right side of the up-down sliding measuring plate (3), and then a left side sliding measuring plate (5) and the up-down sliding measuring plate (3) are assembled, the left side of the left side sliding measurement plate (5) can slide along the Y direction along the left side of the upper and lower sliding measurement plates (3), then the middle main measurement plate (12) and the upper and lower sliding measurement plates (3) are assembled to enable the middle main measurement plate to slide on the upper and lower sliding measurement plates (3), then the right measurement plate (6) and the right side sliding measurement plate (4) are assembled to enable the right measurement plate (6) to slide left and right on the right side sliding measurement plate (4), then the left measurement plate (9) and the left side sliding measurement plate (5) are assembled to enable the left measurement plate (9) to slide left and right on the left side sliding measurement plate (5);

step two: when the total length of a part (21) to be measured is measured, the right auxiliary measuring rod (7) and the right measuring plate (6) need to be assembled at the moment, then the right auxiliary measuring head (8) and the right auxiliary measuring rod (7) are assembled, then the left auxiliary measuring rod (10) and the left measuring plate (9) are assembled, then the left auxiliary measuring head (11) and the left auxiliary measuring rod (10) are assembled, the position of each measuring plate is adjusted, the left auxiliary measuring head (11) and the right auxiliary measuring head (8) are respectively contacted with the large end plane and the small end plane of the part (21) to be measured, then the right measuring plate (6) is fixed through a right measuring plate fixing nut (18), the left measuring plate (9) is fixed through a left measuring plate fixing nut (19), and then the numerical value is read;

step three: when the length of the large end of the part (21) to be measured is measured, only the right auxiliary measuring rod (7) and the right measuring plate (6) need to be assembled, then the right auxiliary measuring head (8) and the right auxiliary measuring rod (7) need to be assembled, or the left auxiliary measuring rod (10) and the left measuring plate (9) need to be assembled, then the left auxiliary measuring head (11) and the left auxiliary measuring rod (10) need to be assembled, then the middle main measuring rod (13) and the middle main measuring plate (12) need to be assembled, then the middle main measuring head (14) and the middle main measuring rod (13) need to be assembled, the position of each measuring plate is adjusted, the right auxiliary measuring head (8) or the left auxiliary measuring head (11) and the middle main measuring head (14) respectively contact with the oblique angle of one side of the large end of the part (21) to be measured, and then the right measuring plate (6) is fixed through the right measuring plate fixing nut (18), the left measuring plate (9) is fixed through a left measuring plate fixing nut (19), the middle main measuring plate (12) is fixed through a middle main measuring plate fixing nut (20), and then a numerical value is read;

step four: when measuring the length and the oblique angle of the small end of the inclined plane of the part (21) to be measured, at the moment, the part (21) to be measured needs to be rotated by an angle, two inclined planes of the part (21) to be measured are sequentially rotated and are parallel to the side surface of the measuring substrate (1), the inclined plane parallel to the side surface of the measuring substrate (1) is a reference inclined plane, then the right auxiliary measuring rod (7) and the right measuring plate (6) are assembled, then the right auxiliary measuring head (8) and the right auxiliary measuring rod (7) are assembled, or the left auxiliary measuring rod (10) and the left measuring plate (9) are assembled, then the left auxiliary measuring head (11) and the left auxiliary measuring rod (10) are assembled, then the middle main measuring rod (13) and the middle main measuring plate (12) are assembled, then the middle main measuring head (14) and the middle main measuring rod (13) are assembled, and the positions of the measuring plates are adjusted, the method comprises the steps of firstly contacting oblique angles opposite to a reference inclined plane of one measuring head and a part to be measured 21, locking the measuring head corresponding to a measuring plate by using a fixing nut to prevent the measuring head from changing in the subsequent measuring process, then contacting the other measuring head and the part to be measured 21 with the reference inclined plane, locking the measuring head corresponding to the measuring plate by using the fixing nut to read a numerical value, and at the moment, because the length of a large end is known, reading the numerical value after rotating by a certain angle, calculating the rotated angle by adopting a right triangle, wherein the rotated angle of the inclined plane at one side is alpha, the rotated angle of the inclined plane at the other side is beta, the oblique angle r is alpha + beta, and calculating the length of the small end of the inclined plane of the part to be measured 21 after calculating the oblique angles.

Step five: and calculating the inclination by the obtained total length, the large end length and the small end length of the part (21) to be measured.