CN101915533B - Gasket measuring and matching check tool - Google Patents

Abstract

The invention discloses a gasket measuring and matching check tool. The check tool comprises an air cylinder and a check tool base plate, wherein the check tool base plate is fixed at the upper end of the air cylinder and is arranged horizontally; a push rod of the air cylinder vertically passes through the check tool base plate and is fixed with a check tool moveable plate which is arranged horizontally; two vertical upward check tool guide posts are arranged on the two sides of the check tool base plate; check tool top plates which are arranged horizontally are arranged at the upper ends of the check tool guide posts; the check tool top plates are provided with through holes; inverted U-shaped check tool measuring blocks are fixed on the lower side faces; two check tool positioning sleeves which pass through the inverted U-shaped check tool measuring blocks and the through holes on the check tool top plates at the same time are fixed on the upper side of the inverted U-shaped check tool measuring blocks; and height measurement and display mechanisms are fixed in the check tool positioning sleeves. The gasket measuring and matching check tool of the invention has the characteristics of simple structure and easy operation, realizes rapid measurement and matching of gaskets, eliminates a free gap between assemblies in a spring loaded way, and fulfills the aim of selecting a proper gasket effectively and accurately.

Description

An optional inspection tool for gasket measurement

technical field

The invention relates to the field of mechanical assembly, in particular to an optional inspection tool for gasket measurement.

Background technique

In order to solve the support problem of shaft parts in the mechanical field, various bearings are needed. Among them, in the combination of box body, shaft and bearing, such as gearbox, gaskets are needed to adjust the axial clearance of the shaft, which has reached the design accuracy requirements and meets the needs of stable transmission and low noise.

In the prior art, general-purpose measuring tools such as height gauges are usually used to measure the height of contained parts such as shafts (with bearings), and then calculate the thickness of the required gasket according to the height and matching requirements of the contained parts such as the box, and then Choose the right gasket. The disadvantage of the above matching method is that it is time-consuming and inaccurate.

With the high development of machinery manufacturing industry, there is an urgent need for an efficient and accurate matching tool for selecting suitable gaskets.

Contents of the invention

The invention provides a gasket measuring optional checking tool with simple structure, convenient operation, high matching efficiency and high accuracy.

An optional inspection tool for gasket measurement, including a cylinder and a horizontally installed inspection tool bottom plate fixed on the upper end of the cylinder. The inspection tool guide column is straight upward; the upper end of the inspection tool guide column is fixed with a horizontally arranged inspection tool top plate, and a through hole is arranged on the inspection tool top plate; an inverted U-shaped inspection tool measurement block is fixed on the lower side of the inspection tool top plate; The upper side of the inverted U-shaped measuring block is fixed with two measuring tool positioning sleeves that pass through the through holes on the inverted U-shaped measuring block and the top plate of the measuring tool at the same time; Pass the measuring column of the measuring tool on the bottom side of the positioning sleeve of the testing tool, and the top cover of the positioning sleeve of the testing tool is respectively fixed with a digital display dial indicator with the lower end passing through the top cover and offsetting the upper end of the measuring column of the testing tool; the inverted U-shaped measuring block of the measuring tool A checker movable plate is horizontally arranged between the lower end and the checker bottom plate, and the checker movable plate is fixed on the top of the push rod of the cylinder.

The digital dial indicator is a measuring instrument that converts the linear displacement of the measuring rod into the angular displacement of the pointer by using rack gear or lever gear transmission. It is mainly used to measure the size, shape and position error of the workpiece. The graduation value is 0.01mm, and the measurement range is generally 0~3mm, 0~5mm and 0~10mm.

There is a cavity connected up and down in the positioning sleeve of the checking tool, and a clamping plate with a through hole is arranged horizontally in the cavity, and the clamping plate divides the cavity of the positioning sleeve of the checking tool into the first cavity on the upper side and the first cavity on the lower side. The second cavity: a positioning block is fixed on the upper end of the measuring column of the inspection tool passing through the clamping plate. The upper surface of the positioning block is offset against the measuring head below the digital display dial indicator. The diameter of the positioning block is larger than the diameter of the through hole in the clamping plate , to prevent the measuring post of the inspection tool from falling off; The positioning ladder matched with the limit block is used to prevent the measuring column of the inspection tool from moving upwards too far to protect the measuring head of the digital display dial indicator. In the second cavity, there is a spring set on the measuring column of the inspection tool. The upper end of the spring is against the clamping plate, and the lower end is against the limit block. The downward pressure generated when the spring is compressed and deformed eliminates the self-containedness between the assemblies. There is a gap, so that the assembly between the containing part and the contained part can meet the precision requirements and meet the needs of stable transmission and low noise.

In order to keep the containment part and the contained part from shaking left and right during detection, a checker contact block cooperating with the two is fixed at the lower end of the limit block.

There are two sliding holes on both sides of the movable plate of the inspection tool, and the two guide posts of the inspection tool pass through the corresponding sliding holes. The movable plate of the inspection tool can slide up and down along the guide posts of the inspection tool; There is a sliding bearing sleeve in contact with the guide post of the inspection tool, which prevents the sliding hole of the movable plate of the inspection tool from becoming larger due to excessive use time and the problem of inaccurate positioning; when the inspection tool of the present invention is used for a long time, the sliding bearing sleeve is After wear and tear, only a new sliding bearing sleeve can be replaced, which also reduces the cost of replacing the movable plate of the inspection tool.

There is a threaded hole in the center of the movable plate of the inspection tool. The movable plate of the inspection tool is fixed to the top of the push rod of the cylinder through the threaded hole. The installation is more convenient. In addition, other fixing methods can also be used for fixing with threads, such as welding and fixing.

The inverted U-shaped measuring block consists of a fixed plate set horizontally and two measuring plates fixed vertically on both sides of the fixed plate and of equal height. The inverted U-shaped measuring block is fixed to the top plate of the measuring tool through the fixed plate. Two positioning sleeves of the checking fixture passing through the top plate of the checking fixture are respectively fixed on the fixing plate.

The gasket measurement and matching check tool of the present invention is mainly used in the measurement and matching of gaskets between various gearbox casings and gearbox casing inner shafts and bearings. In the actual application process, the zero point needs to be checked first: Make a height standard block corresponding to the height of the bearing hole in the housing. The height standard block generally includes a first standard block arranged horizontally and two second standard blocks fixed on the first standard block and vertically arranged. The two second standard blocks The distance between the blocks is equal to the distance between the two main shafts of the gearbox, the total height of the height standard block is equal to the height of the corresponding bearing hole of the gearbox housing, and the length of the first standard block is generally greater than the two lengths of the measuring block of the inspection tool. The distance between two vertical measuring boards; put the height standard block on the movable plate of the inspection tool, so that the first standard block is placed horizontally, and the two second standard blocks are placed vertically, and the cylinder air intake switch is turned on, and the cylinder push rod pushes The movable plate of the inspection tool and the height standard block move up. When they move up to a certain height, the top end surfaces of the two second standard blocks contact the bottom end surface of the contact block of the measurement column of the inspection tool. The spring starts to compress and work, and the cylinder continues to push up. After the first standard block and the bottom end face of the gauge measuring block are tightly pressed together, due to the force of the spring, the bottom end face of the contact block of the gauge measuring column is pressed tightly against the top end face of the height standard block. Under the transmission of the measuring column, the measuring head of the digital display dial indicator senses the height of the measuring column, and the digital display dial indicator starts to measure. The number of the sub-meter is set to 0.00, the zero position of the measuring column of the proofreading gauge is completed, the cylinder exhaust switch is turned on, the movable plate of the gauge and the height standard block move down, and the height standard block is removed after the downward movement stops.

Then carry out the measurement of the sub-assembly to be tested and the selection of gaskets: place the sub-assembly to be tested in the gearbox housing on the movable plate of the inspection tool, turn on the air intake switch of the cylinder, and push the push rod of the cylinder to push the movable plate of the inspection tool to be tested. When the sub-assembly moves up to a certain height, the end surface of the bearing of the sub-assembly to be tested contacts the bottom end surface of the measuring column of the inspection tool, the spring starts to compress and work, and the cylinder continues to push up, and the end surface of the bottom end surface of the measurement block of the inspection tool is pushed up. After being tightly pressed with the top end face of the clutch housing of the gearbox, the bottom end face of the contact block of the measuring column of the inspection tool is pressed tightly against the bearing end face of the sub-assembly to be tested due to the force of the spring, eliminating the free gap of the assembly , under the transmission of the measuring column of the measuring tool, the measuring head of the digital display dial indicator senses the upward movement height of the measuring tool measuring column, and the digital display dial indicator starts to measure. After the number displayed by the digital display dial indicator is stable, Write down the number, for example, it is displayed as -2.05, and the axial clearance is set to 0, then the thickness of the adjusting gasket corresponding to the bearing is 2.05, turn on the cylinder exhaust switch, the movable plate of the inspection tool and the sub-assembly to be tested will move down, wait for Remove the sub-assembly under test after the downward movement stops.

The gasket measurement and matching checker of the present invention has a simple structure and is easy to operate, realizes rapid measurement and matching of gaskets, and eliminates the free gap of the assembly by means of spring pressure, so as to achieve efficient and accurate selection of suitable gaskets Purpose.

Description of drawings

Fig. 1 is a schematic diagram of the structure of the use state of the zero position of the checking tool of the present invention;

Fig. 2 is a schematic diagram of the use state structure of the sub-assembly to be measured by the inspection tool of the present invention;

Fig. 3 is an enlarged schematic diagram of the connection relationship between the positioning sleeve of the inspection tool, the measurement column of the inspection tool and the digital display dial indicator of the present invention;

Fig. 4 is a structural schematic diagram of a height standard block used for matching when measuring the gage of the present invention;

FIG. 5 is an enlarged schematic view of part A of FIG. 1;

FIG. 6 is an enlarged schematic view of part B of FIG. 1;

FIG. 7 is an enlarged schematic view of part C of FIG. 2;

FIG. 8 is an enlarged schematic view of part D of FIG. 2 .

Detailed ways

As shown in Figures 1 to 3, an optional inspection tool for gasket measurement includes a cylinder 1 and a horizontally installed inspection tool bottom plate 2 fixed on the upper end of the cylinder 1. The push rod 3 of the cylinder 1 passes through the inspection tool bottom plate 2 vertically. Two vertically upward inspection tool guide columns 4 are arranged on both sides of the inspection tool bottom plate 2; a horizontally arranged inspection tool top plate 5 is fixed on the upper end of the inspection tool guide column 4, and a through hole 6 is provided on the inspection tool top plate 5; the inspection tool top plate 5 is fixed with an inverted U-shaped gauge measuring block on the side of the lower side; the upper side of the inverted U-shaped gauge measuring block is fixed with two through holes 6 passing through the inverted U-shaped gauge measuring block and the top plate 5 of the gauge at the same time. Gauge positioning sleeve 8; Gage positioning sleeve 8 is respectively provided with a gage measuring column 9 that can move up and down and pass through the bottom side of the gage positioning sleeve 8, and the top cover of the gage positioning sleeve 8 is respectively fixed with a lower end passing through the top. The digital display dial indicator 10 is covered and offset against the upper end of the measuring column 9 of the measuring tool; the movable plate 11 of the measuring tool is arranged between the lower end of the measuring block of the inverted U-shaped measuring tool and the bottom plate 2 of the checking tool, and the movable plate 11 of the checking tool is fixed on the cylinder. The free end of push rod 3.

The bottom plate 2 of the inspection tool is a stainless steel plate. The actual size is determined according to the size of the sub-assembly to be tested. There is no strict requirement on the shape, and the middle part is provided with a through hole for the cylinder push rod 3 to pass through. Generally, the bottom plate 2 of the inspection tool is fixed by studs On the upper side of the cylinder 1; on both sides of the bottom plate 2 of the inspection tool, there are holes for the two guide posts 4 of the inspection tool to pass through.

The lower end of the inspection tool guide post 4 is provided with threads, and the bottom end of the inspection tool guide post 4 and the inspection tool bottom plate 2 are fixed to each other through nuts; Tool top plate 5 is fixed.

There are holes on both sides of the inspection tool top plate 5 for the two inspection tool guide posts 4 to pass through, and a through hole 6 for the two inspection tool positioning sleeves 8 to pass through in the middle. The size of the through hole 6 can be set according to actual needs , there is no strict requirement.

The lower side of the top plate 5 of the inspection tool is fixed with an inverted U-shaped inspection tool measurement block through studs. The inverted U-shaped inspection tool measurement block consists of a horizontally arranged fixed plate 20 and two vertically arranged and equal heights fixed on both sides of the fixed plate. The measuring board 7 is composed of two measuring tool positioning sleeves 8 passing through the checking tool top plate 5 respectively fixed on the fixing plate 20 .

There is a cavity connected up and down in the positioning sleeve 8 of the inspection tool, and a clamping plate 12 with a through hole is arranged horizontally in the cavity, and the clamping plate 12 divides the cavity of the positioning sleeve 8 into the first cavity on the upper side 13 and the second cavity 14 on the lower side; the inner diameter of the first cavity 13 is smaller than the inner diameter of the second cavity 14, and the upper end of the checker measuring post 9 passes through the clamping plate 12 and is fixed with a positioning block 15 by bolts , the upper surface of the positioning block 15 is offset against the measuring head 22 below the digital display dial indicator 10, the diameter of the positioning block 15 is greater than the diameter of the through hole in the clamping plate 12; the measuring column 9 of the checking tool is prevented from falling off, and the measuring column 9 of the checking tool is located at the first The lower end of the second cavity 14 is fixed with a limit block 16, the diameter of the limit block 16 is larger than the diameter of the bottom end of the second cavity 14, and the bottom end of the second cavity 14 is provided with a positioning step 21, which is used to limit the measurement of the inspection tool. The distance that column 9 moves upwards is to protect the measuring head 22 of digital indicator 10 . The second cavity 14 is provided with a spring 17 that is sleeved on the measuring column 9 of the inspection tool. The upper end of the spring 17 is against the clamping plate 12, and the lower end is against the limit block 16. The downward pressure generated when the spring 17 is compressed and deformed is eliminated. The self-gap between the components is improved, so that the assembly between the contained parts and the contained parts can better meet the precision requirements, and meet the needs of stable transmission and low noise. The lower end of the limit block 16 is fixed with a checker contact block 18, in order to prevent the containment part and the containment part from shaking left and right during detection.

There are sliding holes on both sides of the movable plate 11 for the inspection tool to pass through. The movable plate 11 of the inspection tool can slide up and down along the guide column 4 of the inspection tool. Sliding bearing sleeve 19, sliding bearing sleeve 19 is mutually fixed with checking tool movable plate 11 by stud, when sliding bearing sleeve 19 wears and teares, it is convenient to replace, and reduces the wear rate of checking tool movable plate 11. A threaded hole is provided at the center of the movable plate 11 of the inspection tool, and the movable plate 11 of the inspection tool is fixed to the free end of the push rod 3 of the cylinder through the threaded hole.

The gasket measuring and matching inspection tool of the present invention is applied between the car gearbox casing and the inner shaft and bearing of the gearbox casing. The measurement and matching process of the gasket is as follows:

(1) Calibration of zero position: make a height standard block according to the height of the corresponding bearing hole of the gearbox housing, the height standard block includes the first standard block 23 which is horizontally arranged and two vertically arranged vertical blocks which are fixed on the first standard block The second standard block 24, the distance between two second standard blocks 24 is equal to the distance between the two main shafts in the gearbox, the total height of the height standard block is equal to the height of the corresponding bearing hole of the gearbox housing, the first The length of the standard block 23 is generally greater than the distance between the two vertical measuring plates 7 of the gauge measuring block; The block is placed vertically at 24, the air intake switch of cylinder 1 is turned on, the cylinder push rod 3 pushes the movable plate 11 of the inspection tool, and the height standard block moves up. The bottom end surface of the contact block 18 of the column 9 is in contact, the spring 17 starts to compress, and the cylinder 1 continues to push up. Press the bottom end surface of the contact block 18 of the measuring tool measuring column 9 against the top end surface of the height standard block, under the transmission of the measuring tool measuring column 9, the measuring head 22 of the digital display dial indicator 10 senses the measuring tool measuring column 9, the digital display dial indicator 10 starts to measure, and after the number displayed by the digital display dial indicator 10 is stable, set the number of the digital display dial indicator 10 to 0.00, and check the gauge measuring column 9 The zero position of the cylinder is completed, the exhaust switch of cylinder 1 is opened, the movable plate 11 of the inspection tool and the height standard block move down, and the height standard block is unloaded after the downward movement stops.

(2) Measurement of the sub-assembly to be tested and gasket selection: Then place the sub-assembly 25 to be tested in the gearbox housing on the movable plate 11 of the inspection tool, turn on the air intake switch of the cylinder 1, and the push rod of the cylinder pushes the inspection tool The movable plate 11 and the sub-assembly to be tested 25 move up. When moving up to a certain height, the bearing end surface 27 of the sub-assembly to be tested contacts with the bottom end surface of the contact block 18 of the measuring column 9 of the inspection tool, and the spring 17 starts to compress. Cylinder 1 continues to push up, and after pressing the bottom end face of the measuring block of the testing tool and the top end face of the clutch housing 26 of the gearbox together, due to the force of the spring 17, the bottom end of the contact block 18 of the measuring column 9 of the testing tool will The end face is tightly pressed on the bearing end face 27 of the sub-assembly 25 to be tested, and the free gap of the assembly is eliminated by means of spring 17. Under the transmission of the measuring column 9 of the inspection tool, the measuring head 22 of the digital display dial gauge 10 The induction gauge measures the upward movement height of the column 9, and the digital display dial indicator 10 starts to measure. After the number displayed by the digital display dial indicator 10 is stable, write down the number, for example, it is displayed as -2.05, and the axial clearance is set to If it is 0, then the thickness of the adjusting gasket corresponding to the bearing is 2.05, turn on the exhaust switch of cylinder 1, the movable plate 11 of the inspection tool, and the sub-assembly 25 to be measured will move down, and the sub-assembly 25 to be measured will be removed after the downward movement stops. .

Claims (8)

1. An optional checker for gasket measurement, including a cylinder (1) and a checker base plate (2) fixed horizontally on the upper end of the cylinder (1), and the push rod (3) of the cylinder (1) passes through the checker vertically The bottom plate (2) is characterized in that two vertically upward inspection tool guide posts (4) are arranged on both sides of the inspection tool bottom plate (2); the upper end of the inspection tool guide post (4) is fixed with a horizontally arranged inspection tool There is a top plate (5), and a through hole (6) is provided on the top plate of the inspection tool (5); an inverted U-shaped inspection tool measurement block is fixed on the lower side of the inspection tool top plate (5); The side is fixed with two positioning sleeves (8) that pass through the measuring block of the inverted U-shaped testing tool and the through hole (6) on the top plate (5) of the testing tool at the same time; Move and pass through the gauge measuring column (9) on the bottom side of the gauge positioning sleeve (8). The upper end of the gauge positioning sleeve (8) is provided with a top cover. A digital display dial indicator (10) with the upper end of the measuring column (9) offset; a checking tool movable plate (11) is horizontally arranged between the lower end of the inverted U-shaped checking tool measuring block and the checking tool bottom plate (2), and the checking tool movable plate ( 11) be fixed on the top of the push rod (3) of the cylinder. 2. The optional inspection tool for gasket measurement according to claim 1, characterized in that, the positioning sleeve (8) of the inspection tool is provided with a cavity connected up and down, and the cavity is horizontally provided with a through hole The clamping plate (12), the clamping plate (12) divides the cavity of the inspection tool positioning sleeve (8) into the first cavity (13) on the upper side and the second cavity (14) on the lower side; A positioning block (15) is fixed on the upper end of the measuring column (9) passing through the clamping plate (12), and the upper surface of the positioning block (15) is offset against the measuring head (22) below the digital dial indicator (10) , the diameter of the positioning block (15) is greater than the diameter of the through hole in the clamping plate (12); The diameter of (16) is larger than the diameter of the bottom end of the second cavity (14), and the bottom end of the second cavity (14) is provided with a positioning step (21) matched with the limiting block (16). 3. The optional inspection tool for gasket measurement according to claim 2, characterized in that, the second cavity (14) is provided with a spring (17) sleeved on the measuring column (9) of the inspection tool, and the spring (17) The upper end is offset against the clamping plate (12), and the lower end is offset against the stop block (16). 4. The gasket measurement optional checker according to claim 3, characterized in that, the lower end of the limit block (16) is fixed with a checker contact block (18). 5. The optional inspection tool for gasket measurement according to claim 1, characterized in that two sliding holes are provided on both sides of the movable plate (11) of the inspection tool, and the two guide posts (4) of the inspection tool pass through Through the corresponding sliding holes, the movable plate of the inspection tool (11) can slide up and down along the guide column of the inspection tool (4). 6. The optional checker for gasket measurement according to claim 5, characterized in that, there are sliding holes on both sides of the movable plate (11) of the checker to be in contact with the guide post (4) of the checker. Plain bearing housing (19). 7. The gasket measurement matching inspection tool according to claim 1, characterized in that, the center of the movable plate (11) of the inspection tool is provided with a threaded hole, and the movable plate (11) of the inspection tool is connected with the cylinder through the threaded hole. The top ends of the push rods (3) are fixed to each other. 8. The optional inspection tool for gasket measurement according to claim 1, characterized in that, the measuring block of the inverted U-shaped inspection tool is fixed on both sides of the fixed plate (20) by a fixed plate (20) arranged horizontally It is composed of two measuring boards (7) arranged vertically and equal in height, and the measuring block of the inverted U-shaped checking tool is fixed to the checking tool top plate (5) through the fixing plate (20).

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