CN215413467U

CN215413467U - Position degree detection tool for public oil supply pipe

Info

Publication number: CN215413467U
Application number: CN202120899646.3U
Authority: CN
Inventors: 汪威
Original assignee: Xianfusi Technology Wuhan Co ltd
Current assignee: Xianfusi Technology Wuhan Co ltd
Priority date: 2021-04-28
Filing date: 2021-04-28
Publication date: 2022-01-04
Anticipated expiration: 2031-04-28

Abstract

The utility model discloses a position degree gauge for a public oil supply pipe, which comprises: the device comprises a detection platform, a quick clamp, a first positioning seat, a fixing pin, a second positioning seat, a datum detection and other structural holes; the surface of the detection platform is fixedly provided with a first positioning seat and a second positioning seat which are of two groups of round seat structures, a fixing pin of a round rod structure is fixed in the first positioning seat, quick clamps are arranged at the sides of the first positioning seat and the second positioning seat, two sides of the upper surface of the detection platform are respectively fixed with a group of sliding cylinders of a cylindrical structure through connecting blocks of block structures, a positioning rod is embedded in each sliding cylinder, the positioning rod and the sliding cylinders form a sliding pair and a rotating pair, the positioning rod can freely slide and rotate in the sliding cylinders, the two groups of positioning rods are coaxial, a pin box is fixed on the detection platform, and three groups of detection pins including a reference detection pin, a double-diameter detection pin and a sheet detection pin are arranged in each pin box; the utility model has the beneficial effects that: the device integrates multi-position detection, and improves the delivery precision and the qualification rate of the public oil supply pipe.

Description

Position degree detection tool for public oil supply pipe

Technical Field

The utility model relates to the technical field of engine accessories, in particular to a position degree gauge for a public oil supply pipe.

Background

The high pressure common rail diesel engine principle refers to an oil supply machine that completely separates the generation of injection pressure and the injection process from each other in a closed loop system consisting of a high pressure oil pump, a pressure sensor and an Electronic Control Unit (ECU); the common rail system separates the fuel pressure generation from the fuel injection, and opens up a new way for reducing the emission and the noise of the diesel engine; the high-Pressure fuel oil is delivered to a public oil supply pipe (Rail) by a high-Pressure oil pump, and the oil Pressure in the public oil supply pipe is accurately controlled, so that the Pressure (Pressure) of the high-Pressure oil pipe is irrelevant to the rotating speed of an engine, and the degree of the oil supply Pressure of a diesel engine changing along with the rotating speed of the engine can be greatly reduced; the high-pressure common rail system realizes the separation of the pressure establishment process and the injection process, so that the control process is more flexible, the accurate control of small oil quantity can be more accurately realized, and multiple injection can be better realized, and the service life and the service efficiency of a high-pressure common rail diesel engine are directly influenced by the good and bad precision of a public oil supply pipe.

However, in the prior art, the position degree detection tool for the public oil supply pipe rarely improves the product delivery qualification rate and precision of the public oil supply pipe, so that the position degree detection tool for the public oil supply pipe is needed in the prior art to solve the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a position degree gauge for a public oil supply pipe, which is used for solving the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme:

a position degree gauge for a public oil supply pipe comprises: the device comprises a detection platform, a quick clamp, a first positioning seat, a fixing pin, a second positioning seat, a reference detection pin, a double-diameter detection pin, a sheet detection pin, a workpiece, a sliding barrel, a positioning rod, a pin box, an anti-skidding pin handle, a large-diameter end, a small-diameter end, a positioning seat, a positioning hole and an end hole; the workpiece is a public oil supply pipe and is used as a workpiece to be detected, the upper main body of the workpiece is of a tubular structure, two groups of connecting blocks for fixed connection are arranged on the public oil supply pipe, connecting holes are formed in the connecting blocks, the connecting blocks are used for detection and positioning and are defined as positioning seats, the connecting holes in the connecting blocks are defined as positioning holes, the axial leads of the two groups of positioning holes are parallel, and the axial leads of the positioning holes are perpendicular to the upper end surface and the lower end surface of the positioning seats; two end openings of the workpiece are defined as two groups of end holes; the utility model discloses a detection platform, including detection platform, fixed surface, first locating seat and second locating seat, the fixed pin that is fixed with a round bar structure in the first locating seat, the side of first locating seat and second locating seat all is equipped with and is used for fixing the fast clamp on first locating seat and second locating seat with the work piece centre gripping, the both sides of detection platform upper surface are fixed with the slide cartridge of a set of drum structure through massive structure's connecting block separately, it has a locating lever to embed in the slide cartridge, locating lever and slide cartridge form sliding pair and revolute pair, the locating lever can freely slide rotatoryly in the slide cartridge, two sets of locating levers are with the axle center, detection platform's last top fixed surface has a round pin box, and it has benchmark to detect round pin, the double-diameter to detect round pin, three group detection round pin of slice detection round pin to embed in the round pin box.

Preferably, the reference detection pin is of a double-section structure, the upper portion of the reference detection pin is a pin handle, a pin column is arranged at the lower end of the pin handle, and the diameter of the pin column is consistent with the aperture of a positioning hole matched with the pin column.

Preferably, the double-diameter detection pin is of a three-section structure, the middle part of the double-diameter detection pin is an anti-skidding pin handle, the upper end and the lower end of the anti-skidding pin handle are respectively a large-diameter end and a small-diameter end of the concentric rod structure, and the diameter of the large-diameter end is larger than that of the small-diameter end.

Preferably, the second positioning seat is provided with a concentric pin hole for inserting the reference detection pin, and the diameters of the concentric pin hole and the pin column below the reference detection pin are consistent.

Preferably, the sheet-shaped detection pin is of a double-section structure, the upper part of the sheet-shaped detection pin is a pin handle, and the lower end of the pin handle is provided with a pin sheet of a sheet-shaped structure.

Preferably, the diameters of the positioning rods are respectively the same as the diameters of the positioning holes matched with the same side of the positioning rods.

Preferably, the diameter of the fixing pin is consistent with the aperture of the positioning hole matched with the fixing pin.

Preferably, the height of the fixing pin on the upper surface of the first positioning seat is consistent with the thickness of the positioning seat on the same side.

Preferably, the distance between the opposite faces of the slide is greater than the total length of the workpiece.

Preferably, the thickness of the pin sheet below the sheet-shaped detection pin is consistent with the maximum acceptable tolerance of the horizontal position difference value of the bottom surfaces of the two groups of positioning seats.

Compared with the prior art, the utility model has the beneficial effects that:

the method comprises the following steps that through the establishment of a first positioning seat, a fixing pin, a second positioning seat, a reference detection pin, a double-diameter detection pin, a sheet detection pin, a workpiece, a sliding cylinder and a positioning rod, a positioning hole on one side of the workpiece is aligned with the fixing pin, the fixing pin is completely inserted into the positioning hole, if the fixing pin is seriously blocked during insertion, the positioning hole is unqualified, the workpiece is taken down to be processed, and if the fixing pin is qualified, the next detection is carried out; aligning the other group of positioning holes on the workpiece with the concentric pin holes on the second positioning seat, simultaneously inserting the pin columns of the reference detection pins into the concentric pin holes of the second positioning seat and the positioning holes, if the situation of serious blocking and hindering feeling occurs during insertion, the positioning holes are unqualified, taking down the workpiece for processing, and if the situation is qualified, carrying out next detection; clamping and fixing the positioning seat of the workpiece on a first positioning seat and a second positioning seat by using a quick clamp, wherein a notch is arranged on the clamping position of the quick clamp on the side of the second positioning seat to avoid interference with a reference detection pin inserted and loaded on the second positioning seat, then, rotationally sliding a positioning rod into an end hole on the same side to detect the concentricity and the diameter of the end hole, if the rotary sliding is serious in blocking and hindering feeling, the concentricity or the diameter of the end holes of the two end holes is unqualified, taking down the workpiece for treatment, and if the rotary sliding is qualified, carrying out the next detection; the double-diameter detection pin is used for detecting whether the total length tolerance of the workpiece reaches the standard or not, and the sliding cylinder is fixed on the detection platform, so that the total length tolerance of the workpiece can be detected whether the total length tolerance of the workpiece reaches the standard or not only by detecting whether the distance between two ends of the workpiece and the opposite surfaces of the sliding cylinder on the same side is within a tolerance range or not, so long as the diameter difference value of the large-diameter end and the small-diameter end of the double-diameter detection pin is ensured to be consistent with the tolerance quantity of the distance between the end surface of the workpiece and the sliding cylinder on the same side after calculation, at the moment, the large-diameter end and the small-diameter end of the double-diameter detection pin are respectively arranged in the gap between the end surface of the workpiece and the sliding cylinder on the same side, if the small-diameter end can be arranged in the gap, the large-diameter end can not be arranged in the gap, the tolerance quantity of the distance between the end surface of the workpiece and the sliding cylinder on the same side after calculation reaches the standard, and the total length tolerance of the workpiece reaches the standard or not, if the large-diameter end and the small-diameter end can be simultaneously placed in the gap between the end face of the workpiece and the sliding cylinders on the same side of the end face of the workpiece, or the large-diameter end and the small-diameter end can not be placed in the gap between the end face of the workpiece and the sliding cylinders on the same side of the end face of the workpiece, the total length tolerance of the workpiece is not up to the standard, the workpiece is taken down for processing, and if the total length tolerance of the workpiece is up to the standard, the next detection is carried out; detecting whether the parallelism and the thickness of the bottom surface of the positioning seat reach the standard by using the sheet-shaped detection pin, inserting the pin sheet below the sheet-shaped detection pin between the positioning seat and a matching surface between the first positioning seat and the second positioning seat on the same side of the positioning seat, taking down the workpiece for processing if the pin sheet can be inserted, and taking down the workpiece if the parallelism and the thickness of the bottom surface of the positioning seat do not reach the standard if the pin sheet can not be inserted, wherein the parallelism and the thickness of the bottom surface of the positioning seat reach the standard and are qualified; at the moment, the workpiece is taken down, multi-position detection is integrated, and the delivery precision and the qualification rate of the public oil supply pipe are improved.

Drawings

FIG. 1 is a schematic top view of a location degree gauge for a common oil supply pipe.

FIG. 2 is a schematic structural view of a slide cylinder and a positioning rod in a position degree detection tool for a public oil supply pipe.

FIG. 3 is a schematic view of a datum detection pin in a location degree gauge for a common fuel supply pipe.

FIG. 4 is a schematic structural view of a double-diameter detection pin in a position degree detection tool for a public oil supply pipe.

FIG. 5 is a schematic structural view of a reference detection pin in the position degree detection tool for the public oil supply pipe.

FIG. 6 is a schematic structural view of a sheet-like check pin in a location degree check tool for a public fuel supply pipe.

In the figure: 1. a detection platform; 2. quickly clamping; 3. a first positioning seat; 4. a fixing pin; 5. a second positioning seat; 6. a reference detection pin; 7. a double diameter detection pin; 8. a sheet-like detection pin; 9. a workpiece; 10. a slide cylinder; 11. positioning a rod; 12. a pin box; 71. an anti-skid pin handle; 72. a large diameter end; 73. a fine diameter end; 91. positioning seats; 92. positioning holes; 93. and (4) end holes.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 6, in an embodiment of the present invention, a position degree detection tool for a public oil supply pipe includes: the device comprises a detection platform 1, a quick clamp 2, a first positioning seat 3, a fixing pin 4, a second positioning seat 5, a reference detection pin 6, a double-diameter detection pin 7, a sheet detection pin 8, a workpiece 9, a sliding barrel 10, a positioning rod 11, a pin box 12, an anti-skidding pin handle 71, a large-diameter end 72, a small-diameter end 73, a positioning seat 91, a positioning hole 92 and an end hole 93; the workpiece 9 is a public oil supply pipe which is used as a workpiece to be detected, the upper main body of the workpiece is of a tubular structure, two groups of connecting blocks for fixed connection are arranged on the public oil supply pipe, connecting holes are arranged on the connecting blocks, the connecting blocks are used for detection and positioning and are defined as positioning seats 91, the connecting holes on the connecting blocks are defined as positioning holes 92, the axial leads of the two groups of positioning holes 92 are parallel, and the axial leads of the positioning holes 92 are perpendicular to the upper end surface and the lower end surface of the positioning seats 91; the openings at both ends of the workpiece 9 are defined as two sets of end holes 93; the detection platform 1 is a plate-type platform with a smooth horizontal surface, the surface of the detection platform 1 is fixed with a first positioning seat 3 and a second positioning seat 5 which have two groups of round seat structures, a fixing pin 4 with a round rod structure is fixed in the first positioning seat 3, the sides of the first positioning seat 3 and the second positioning seat 5 are respectively provided with a quick clamp 2 for clamping and fixing a workpiece on the first positioning seat 3 and the second positioning seat 5, two sides of the upper surface of the detection platform 1 are respectively fixed with a sliding cylinder 10 with a group of round rod structures through connecting blocks with block structures, a positioning rod 11 is embedded in the sliding cylinder 10, the positioning rod 11 and the sliding cylinder 10 form a sliding pair and a rotating pair, the positioning rod 11 can freely slide and rotate in the sliding cylinder 10, the two groups of positioning rods 11 are coaxial, a pin box 12 is fixed on the upper top surface of the detection platform 1, and a reference detection pin 6 and a double-diameter detection pin 7 are embedded in the pin box 12, The sheet-like detection pins 8 have three sets of detection pins.

The reference detection pin 6 is of a double-section structure, the upper part of the reference detection pin is a pin handle, a pin column is arranged at the lower end of the pin handle, and the diameter of the pin column is consistent with the aperture of a positioning hole 92 matched with the pin column.

The double-diameter detection pin 7 is of a three-section structure, the middle part of the double-diameter detection pin is provided with an anti-skidding pin handle 71, the upper end and the lower end of the anti-skidding pin handle 71 are respectively provided with a large-diameter end 72 and a small-diameter end 73 which are of concentric rod structures, and the diameter of the large-diameter end 72 is larger than that of the small-diameter end 73.

The second positioning seat 5 is provided with a concentric pin hole for inserting the reference detection pin 6, and the concentric pin hole is consistent with the pin column diameter below the reference detection pin 6.

The sheet-shaped detection pin 8 is of a double-section structure, the upper part of the sheet-shaped detection pin is a pin handle, and the lower end of the pin handle is provided with a pin sheet of a sheet-shaped structure.

The diameters of the positioning rods 11 are respectively the same as the diameters of the positioning holes 92 matched with the same side of the positioning rods.

The diameter of the fixing pin 4 is consistent with the aperture of the positioning hole 92 matched with the fixing pin.

The height of the fixing pin 4 on the upper surface of the first positioning seat 3 is consistent with the thickness of the positioning seat 91 on the same side.

The distance between the opposite faces of the slide 10 is greater than the total length of the workpiece 9.

The thickness of the pin sheet below the sheet-shaped detection pin 8 is consistent with the maximum acceptable tolerance of the horizontal position difference value of the bottom surfaces of the two groups of positioning seats 91.

The working principle of the utility model is as follows: when the positioning device is used, the positioning hole 92 on one side of the workpiece 9 is aligned with the fixing pin 4, the fixing pin 4 is completely inserted into the positioning hole 92, if the situation that the blocking and hindering feeling is serious occurs during insertion, the positioning hole 92 is unqualified, the workpiece 9 is taken down for treatment, and if the situation is qualified, the next detection is carried out; aligning the other group of positioning holes 92 on the workpiece 9 with the concentric pin holes on the second positioning seat 5, simultaneously inserting the pin columns of the reference detection pins 6 into the concentric pin holes of the second positioning seat 5 and the positioning holes 92, if the situation of serious blocking and hindering feeling occurs during insertion, the positioning holes 92 are unqualified, taking down the workpiece 9 for processing, and if the situation is qualified, carrying out next detection; clamping and fixing the positioning seat 91 of the workpiece 9 on the first positioning seat 3 and the second positioning seat 5 by using the quick clamp 2 (a notch is arranged on the clamping position of the quick clamp on the side of the second positioning seat 5 to avoid interference with a benchmark detection pin 6 inserted and loaded on the second positioning seat 5), then rotationally sliding the positioning rod 11 into the end hole 93 on the same side to detect the concentricity and the diameter of the end hole, if the serious blocking and hindering feeling occurs during rotational sliding, the concentricity or the diameter of the end hole 93 is unqualified, taking down the workpiece 9 for processing, and if the workpiece is qualified, carrying out next detection; the double-diameter detection pin 7 is used for detecting whether the tolerance of the total length of the workpiece 9 reaches the standard or not, and the sliding cylinder 10 is fixed on the detection platform 1, so that the distance between the opposite surfaces of the sliding cylinder 10 is constant, and therefore, whether the tolerance of the total length of the workpiece 9 reaches the standard or not can be detected only by detecting whether the distance between the two ends of the workpiece 9 and the opposite surfaces of the sliding cylinder 10 on the same side is within the tolerance range or not, so long as the diameter difference value between the thick end 72 and the thin end 73 of the double-diameter detection pin 7 is ensured to be consistent with the tolerance of the distance between the end surface of the workpiece 9 and the sliding cylinder 10 on the same side after calculation, at the moment, only the thick end 72 and the thin end 73 of the double-diameter detection pin 7 are respectively arranged in the gap between the end surface of the workpiece 9 and the sliding cylinder 10 on the same side, and if the thin end 73 can be arranged in the gap just enough, the thick end 72 can not be arranged in the gap, the tolerance of the distance between the end surface of the workpiece 9 and the sliding cylinder 10 on the same side after calculation can be indicated, the tolerance of the total length of the workpiece 9 reaches the standard, if the large-diameter end 72 and the small-diameter end 73 can be simultaneously placed in the gap between the end surface of the workpiece 9 and the sliding cylinder 10 on the same side of the workpiece, or the large-diameter end 72 and the small-diameter end 73 can not be placed in the gap between the end surface of the workpiece 9 and the sliding cylinder 10 on the same side of the workpiece, the tolerance of the total length of the workpiece 9 does not reach the standard, the workpiece 9 is taken down for processing, and if the tolerance is qualified, the next detection is carried out; detecting whether the parallelism and the thickness of the bottom surface of the positioning seat 91 reach the standard or not by using the sheet-shaped detection pin 8, inserting a pin sheet below the sheet-shaped detection pin 8 between the positioning seat 91 and a matching surface between the first positioning seat 3 or the second positioning seat 5 on the same side of the positioning seat, taking down the workpiece 9 to be processed if the pin sheet can be inserted, and taking down the parallelism and the thickness of the bottom surface of the positioning seat 91 to be qualified if the pin sheet can not be inserted; at this point, the workpiece 9 is removed again and the reset device completes the detection.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention; furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated; thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature.

In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein; any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A position degree gauge for a public oil supply pipe comprises: the device comprises a detection platform (1), a quick clamp (2), a first positioning seat (3), a fixing pin (4), a second positioning seat (5), a reference detection pin (6), a double-diameter detection pin (7), a sheet detection pin (8), a workpiece (9), a sliding barrel (10), a positioning rod (11), a pin box (12), an anti-skidding pin handle (71), a large-diameter end (72), a small-diameter end (73), a positioning seat (91), a positioning hole (92) and an end hole (93); the workpiece (9) is a public oil supply pipe and serves as a workpiece to be detected, the upper main body of the workpiece is of a tubular structure, two groups of connecting blocks used for fixed connection are arranged on the public oil supply pipe, connecting holes are formed in the connecting blocks and are used for detecting and positioning, the connecting blocks are defined as positioning seats (91), the connecting holes in the connecting blocks are defined as positioning holes (92), the axial leads of the two groups of positioning holes (92) are parallel, and the axial leads of the positioning holes (92) are perpendicular to the upper end face and the lower end face of the positioning seats (91); two end openings of the workpiece (9) are defined as two groups of end holes (93); the method is characterized in that: the detection platform (1) is a plate-type platform with a smooth horizontal surface, a first positioning seat (3) and a second positioning seat (5) of two groups of round seat structures are fixed on the surface of the detection platform (1), a fixing pin (4) of a round rod structure is fixed in the first positioning seat (3), quick clamps (2) used for clamping and fixing workpieces on the first positioning seat (3) and the second positioning seat (5) are arranged beside the first positioning seat (3) and the second positioning seat (5), sliding cylinders (10) of a group of cylindrical structures are fixed on two sides of the upper surface of the detection platform (1) respectively through connecting blocks of block structures, a positioning rod (11) is embedded in each sliding cylinder (10), the positioning rod (11) and the sliding cylinder (10) form a sliding pair and a rotating pair, the positioning rod (11) can freely slide and rotate in the sliding cylinder (10), two groups of positioning rods (11) are concentric, a pin box (12) is fixed on the upper top surface of the detection platform (1), three groups of detection pins, namely a reference detection pin (6), a double-diameter detection pin (7) and a sheet detection pin (8), are arranged in the pin box (12).

2. The location degree gauge for the public oil supply pipe according to claim 1, wherein: the reference detection pin (6) is of a double-section structure, the upper part of the reference detection pin is a pin handle, a pin column is arranged at the lower end of the pin handle, and the diameter of the pin column is consistent with the aperture of a positioning hole (92) matched with the pin column.

3. The location degree gauge for the public oil supply pipe according to claim 1, wherein: the double-diameter detection pin (7) is of a three-section structure, an anti-skid pin handle (71) is arranged in the middle of the double-diameter detection pin (7), the upper end and the lower end of the anti-skid pin handle (71) are a large-diameter end (72) and a small-diameter end (73) of a concentric rod structure respectively, and the diameter of the large-diameter end (72) is larger than that of the small-diameter end (73).

4. The location degree gauge for the public oil supply pipe according to claim 1, wherein: the second positioning seat (5) is internally provided with a concentric pin hole for the insertion of the reference detection pin (6), and the diameters of the concentric pin hole and the pin column below the reference detection pin (6) are consistent.

5. The location degree gauge for the public oil supply pipe according to claim 1, wherein: the sheet-shaped detection pin (8) is of a double-section structure, the upper part of the sheet-shaped detection pin is a pin handle, and the lower end of the pin handle is provided with a pin sheet of a sheet-shaped structure.

6. The location degree gauge for the public oil supply pipe according to claim 1, wherein: the diameters of the positioning rods (11) are respectively the same as the diameters of the positioning holes (92) matched with the positioning rods on the same side.

7. The location degree gauge for the public oil supply pipe according to claim 1, wherein: the diameter of the fixing pin (4) is consistent with the aperture of the positioning hole (92) matched with the fixing pin.

8. The location degree gauge for the public oil supply pipe according to claim 1, wherein: the height of the fixing pin (4) on the upper surface of the first positioning seat (3) is consistent with the thickness of the positioning seat (91) on the same side.

9. The location degree gauge for the public oil supply pipe according to claim 1, wherein: the distance between the opposite surfaces of the sliding cylinder (10) is larger than the total length of the workpiece (9).

10. The location degree gauge for the public oil supply pipe according to claim 1, wherein: the thickness of the pin sheet below the sheet-shaped detection pin (8) is consistent with the maximum acceptable tolerance of the horizontal position difference value of the bottom surfaces of the two groups of positioning seats (91).