Comprehensive calibration device of cylinder crankshaft hole electronic gauge

Abstract

The utility model relates to the field of machine manufacturing, in particular to a comprehensive calibration device of a cylinder crankshaft hole electronic gauge. The device is composed of an upper-layer storage area and a lower-layer correction area. The correction area is composed of a base, a correction block and a front limiting block, and the correction block is fixed through positioning pins arranged in a diagonal mode. The upper-layer storage area comprises nylon supporting blocks, vertical supporting rods and a transparent acrylic outer cover, the vertical supporting rods are distributed at the four corners of the base, and long cross beams are fixed to the tops of the vertical supporting rods; the nylon supporting block is fixed through a short cross beam; the transparent acrylic outer cover is installed through M4 screws, and a semi-arc notch is formed in the front end of the transparent acrylic outer cover. The device is efficient and rapid in work, accurate in correction, dustproof, simple in structure, stable in performance and easy and convenient to use, the production efficiency of a production line is improved, and potential quality hazards caused by abnormity of an electronic gauge are eliminated.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical manufacturing field, concretely relates to a kind of comprehensive device for calibrating cylinder body crankshaft hole electronic gauge. BACKGROUND

[0002] The cylinder body of certain 2.5 new model has five crankshaft holes, and the hole diameter, coaxiality and cylindricity of the five crankshaft holes need to meet the requirements of micrometer level at the same time. The offline gauge for the cylinder body is a through-type electronic gauge for crankshaft hole, which adopts an inductive measuring rod and is configured with a measuring instrument of an internationally renowned brand. The main technical parameters are as follows: measurement resolution ≤0.0001 mm, repeatability ≤10%, accuracy ≤10%, linearity ≤10%, GRR ≤10%, measurement process stability ≤10% and temperature stability ≤10%. The measuring rod contains five measuring sections (corresponding to the five crankshaft holes of the cylinder body), each section is configured with four measuring points, and the displacement of the measuring rod is controlled by servo control to complete the measurement of two sections of the 1-5# main bearing hole. All measurement results need to be displayed on the interface of the measuring instrument, and there are a total of 2 groups of 40 data. The electronic gauge is very expensive.

[0003] Before the electronic gauge measures the crankshaft hole of the cylinder body, it needs to be calibrated first to verify whether the size of the detection calibration block is correct, so as to verify the working state of the electronic gauge. Only the electronic gauge that passes the inspection can be used normally, otherwise it needs to be reported to the engineer to detect whether the electronic gauge is faulty. The calibration device needs to accurately detect the state of the electronic plug gauge. The length of the electronic gauge is greater than 650 mm, the width is greater than 95 mm, and the irregular shape of the long rod will cause uneven stress of the grouping machine and deformation if not stored and placed properly. In addition, the dust and oil outside will enter the sensor of the measuring rod, which will cause measurement error, even cause sensor failure and damage to the electronic gauge.

[0004] The existing integrated calibration device for the electronic gauges of the cylinder block crankshaft bore is a split type, consisting of one calibration unit and one storage unit. The calibration unit is bolted to the base plate, with single-sided positioning and limit, and five calibration blocks arranged sequentially. The storage unit consists of two V-shaped support blocks supporting the electronic plug gauge. Both units are directly exposed to the air. When calibrating the electronic gauge, the operator uses a hoist to lift the gauge from the storage unit, gently inserts it into the calibration unit, and passes it through the central through-hole of the five calibration blocks. Once the limit block contacts the electronic gauge, the operation stops, and the operator presses the calibration button. The measuring instrument interface displays the calibration data and results for the electronic plug gauge. The old device lacks any protective cover, and after a period of use, the outer surface becomes quite dirty, containing oil and impurities. Operators need to regularly clean the device and the electronic gauge to remove oil and dust and maintain the condition of the electronic gauge. The storage device has a large span, and the V-shaped support will cause the gauge contact surface to be subjected to long-term stress and friction, affecting its appearance. Furthermore, the electronic gauges require special care when placed to ensure the probes and sensors do not come into contact with the device, preventing prolonged stress on the probes, which could affect their flexibility and cause measurement errors. The calibration device uses a single-sided positioning pin, requiring extremely careful installation. Long-term use may result in some deviation, necessitating regular inspection and maintenance. The existing device is not dustproof, impurity-proof, or impact-proof. Installing the calibration device is extremely time-consuming; even slight misalignment of the calibration blocks' position or angle can cause the coaxiality of the five calibration block's central holes to fail to meet requirements, necessitating rework and reinstallation of the entire fixture. This rework is difficult, time-consuming, and labor-intensive. Maintenance costs are high. The long-term contact between the electronic gauge probes and sensors and the device can compress them, affecting their flexibility, leading to misjudgments and potential quality issues. Placing two devices flat on the workbench occupies a large space and hinders operator operation. Utility Model Content

[0005] To solve the above problems, this utility model provides a comprehensive calibration device for an electronic gauge of the crankshaft bore in a cylinder block. The specific technical solution is as follows:

[0006] A comprehensive calibration device for an electronic gauge for a cylinder block crankshaft bore, the device consisting of an upper storage area and a lower calibration area;

[0007] The calibration area consists of a base, a calibration block, and a front limit block. The calibration block is fixed by positioning pins arranged diagonally. The upper storage area includes a nylon support block, a vertical support rod, and a transparent acrylic cover. The vertical support rod is distributed at the four corners of the base, and a long crossbeam is fixed at the top. The nylon support block is fixed by a short crossbeam. The transparent acrylic cover is installed with M4 screws and has a semi-circular notch at the front end.

[0008] Furthermore, the calibration block has a T-shaped structure with a high-precision through hole in the middle, as well as four bolt through holes and two Φ6 positioning pin holes. The positioning pins are positioned by a diagonal layout, which accurately positions the calibration block on the base.

[0009] Further, the base front end face has 2 M8 threaded holes and 2 Φ8 positioning bottom holes for accurate positioning and fixing the front limit block. The recessed surface is provided with 10 Φ6 positioning pin holes and 20 M8 threaded holes for accurate positioning and fixing 5 correction blocks.

[0010] Further, the front limit block is provided with 2 stepped through holes and 2 Φ8 positioning bottom through holes. The positioning pin has a large head and a small head, facilitating installation, fixing and disassembly.

[0011] Further, the vertical support rod top is provided with a threaded hole for fixing the long cross beam, and the side edge is provided with 2 M4 threaded holes for fixing the outer cover.

[0012] Further, one side of the long cross beam is provided with 2 M4 threaded holes, and the adjacent side is provided with 4 M8 threaded stepped holes, which are respectively assembled and fixed with the vertical support rod and the short cross beam.

[0013] Further, the short cross beam has 2 M8 threaded holes and 2 stepped through holes on one side, which are respectively assembled and fixed with the support block and the long cross beam.

[0014] Further, the support block is provided with a large through hole for the electronic gauge measuring rod to pass through, and the other side is provided with 2 stepped through holes for fixing on the short cross beam.

[0015] Further, the middle through hole of the correction block is a micron-level high-precision inner diameter hole with a hole diameter, coaxiality and cylindricity error ≤1 μm.

[0016] Further, the outer cover is N-shaped and is provided with 12 screw holes, which are fixed on the long cross beam and the vertical support rod by M4 screws. The front end has a semicircular notch, and the electronic gauge is moved forward to avoid the lifting tool when detecting the second cross section.

[0017] The operator hooks the electronic gauge upper hook with the truss hook, gently takes out the electronic gauge from the storage area to the outside, holds the area without probe and sensor with his hand, stretches the electronic gauge measuring rod along the correction block center through hole in the horizontal direction into the correction area until the electronic gauge contacts the front limit block and cannot move horizontally, stops stretching, pulls out the truss spring rope, and lets the electronic gauge be in a free state. Press the correction button and check the correction data on the display instrument. If there is no abnormality, use the electronic gauge to detect the cylinder crank hole data. After the measurement is completed, stretch the electronic gauge measuring rod along the horizontal direction into the support block center through hole until it cannot move. The above operation realizes the purpose of electronic gauge correction, detection and storage.

[0018] The device is efficient, fast, accurate, dustproof, simple in structure, stable in performance, easy to use, improves production efficiency, eliminates quality risks caused by abnormal electronic gauge, is safe and reliable in operation, practices the quality requirements of "three no" and "two prevention" of the company, and is made of GCr15, Cr12MoV, 30# low carbon steel, nylon and acrylic materials. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a working schematic view of the utility model (without showing a protective cover);

[0020] Figure 2 It is a structural schematic view of the utility model (without showing a protective cover);

[0021] Figure 3 It is a storage area structural schematic view of the utility model;

[0022] Figure 4 It is a correction area structural schematic view of the utility model;

[0023] Figure 5 It is a correction block structural schematic view of the utility model;

[0024] Figure 6 It is a base structural schematic view of the utility model;

[0025] Figure 7 It is a front limiting block structural schematic view of the utility model;

[0026] Figure 8 It is a vertical support rod structural schematic view of the utility model;

[0027] Figure 9 It is a long cross beam structural schematic view of the utility model;

[0028] Figure 10 It is a short cross beam structural schematic view of the utility model;

[0029] Figure 11 It is a support block structural schematic view of the utility model;

[0030] Figure 12 It is an outer cover structural schematic view of the utility model;

[0031] Reference signs:

[0032] 41-Base, 31-Vertical support rod, 45-Front limit block, 42-Correction block, 34-Long crossbeam, 35-Short crossbeam, 32-Nylon support block, 5-Outer cover, 44-M8 bolt, 33-M8 short bolt, 51-M4 screw, 46-Φ8 positioning pin, 43-Φ6 positioning pin. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] like Figures 1-12 As shown, a comprehensive calibration device for electronic gauges of cylinder crankshaft bores has a two-layer structure, with the upper layer for storing electronic gauges and the lower layer for calibrating electronic gauges.

[0035] The calibration area mainly consists of a base, five calibration blocks, a front limit block, 22 M8 bolts, two Φ8 locating pins, and ten Φ6 locating pins. The calibration blocks have a T-shaped structure with a micron-level high-precision through-hole in the center, along with four bolt through-holes and two Φ6 locating pin holes. The locating pins are positioned diagonally to precisely position the calibration blocks on the base. The through-holes in the five calibration blocks are connected in series to achieve micron-level coaxiality and cylindricity. The front face of the base has two M8 threaded holes and two Φ8 locating bottom holes for precise positioning and fixing of the front limit block. The grooved surface has ten Φ6 locating pin holes and twenty M8 threaded holes for precise positioning and fixing of the five calibration blocks. The front limit block has two stepped through-holes and two Φ8 locating bottom through-holes. The locating pins are multi-headed for easy installation, fixing, and disassembly.

[0036] The storage area mainly consists of 3 blue nylon support blocks, 3 short crossbeams, 2 long crossbeams, 4 vertical support rods, 10 M8 bolts, and 6 M8 short bolts. Each vertical support rod has a threaded hole at the top for fixing the long crossbeams, and two M4 threaded holes on its side for fixing to the outer cover. One side of each long crossbeam has two M4 threaded holes, and adjacent sides have four M8 threaded stepped holes, which are used to assemble and fix to the vertical support rods and short crossbeams, respectively. One side of each short crossbeam has two M8 threaded holes and two stepped through holes, which are used to assemble and fix to the support blocks and long crossbeams, respectively. Each support block has a large through hole for the electronic gauge rod to pass through, and two stepped through holes on the other side for fixing to the short crossbeams.

[0037] The outer cover is N-shaped transparent acrylic material part, provided with 12 screw through holes, fixed on the long cross beam and vertical support rod through M4 screw, the front end has a semicircular notch, the electronic gauge is moved forward to avoid the sling when detecting the second group of cross sections.

[0038] The above detailed description of the preferred embodiments of the present patent, but the patent is not limited to the above embodiments, within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the purpose of the patent.

Claims

1. An integrated calibration apparatus for a cylinder bore crankshaft hole electronic gauge, characterized by: The device is composed of an upper storage area and a lower correction area; The correction area is composed of a base (41), a correction block (42) and a front limiting block (45), the correction block is fixed by diagonal positioning pins; the upper storage area includes nylon supporting blocks (32), vertical supporting rods (31) and an outer cover (5), the vertical supporting rods (31) are distributed at four corners of the base and are fixed with a long crossbeam (34) at the top; the nylon supporting blocks (32) are fixed by short crossbeams (35); the outer cover (5) is installed by M4 screws (51) and is provided with a semicircular notch at the front end.

2. A comprehensive calibration device for a cylinder bore electronic gauge of a crankshaft according to claim 1, characterized in that: The correction block (42) is of T-shaped structure, is provided with a high-precision through hole in the middle and is provided with four bolt through holes and two Φ6 positioning pin holes, the positioning pins are positioned by diagonal layout and high-precision positioning of the correction block on the base.

3. A comprehensive calibration device for a cylinder bore electronic gauge of a crankshaft according to claim 1, characterized in that: The base (41) is provided with two M8 threaded holes and two Φ8 positioning bottom holes at the front end face and is provided with ten Φ6 positioning pin holes and twenty M8 threaded holes on the groove face.

4. The integrated calibration apparatus for a cylinder bore electronic gauge of a crankshaft according to claim 1, characterized in that: The front limiting block (45) is provided with two stepped through holes and two Φ8 positioning bottom through holes; the positioning pin is of big head and small head.

5. The integrated calibration apparatus for a cylinder bore electronic gauge of a crankshaft according to claim 1, characterized in that: The vertical supporting rod (31) is provided with a threaded hole at the top and is provided with two M4 threaded holes at the side.

6. An integrated calibration apparatus for a bore gauge of a cylinder crankshaft according to claim 1, characterized in that: The long crossbeam (34) is provided with two M4 threaded holes on one face, is provided with four M8 threaded stepped holes on the adjacent face and is respectively assembled and fixed with the vertical supporting rod and the short crossbeam.

7. An integrated calibration apparatus for a bore gauge of a cylinder crankshaft according to claim 1, characterized in that: The short crossbeam (35) is provided with two M8 threaded holes and two stepped through holes on one face and is respectively assembled and fixed with the supporting block and the long crossbeam.

8. An integrated calibration apparatus for a bore gauge of a cylinder crankshaft according to claim 1, characterized in that: The nylon supporting block (32) is provided with a large through hole for the electronic gauge measuring rod to pass through and is provided with two stepped through holes on the other side for being fixed on the short crossbeam.

9. An integrated calibration apparatus for a bore gauge of a cylinder crankshaft according to claim 1, characterized in that: The middle through hole of the correction block (42) is a micron-level high-precision inner diameter hole, the hole diameter, coaxiality and cylindricity error are ≤1 μm.

10. An integrated calibration apparatus for a bore gauge of a cylinder crankshaft according to claim 1, characterized in that: The outer cover (5) is an N-shaped transparent acrylic material, is provided with twelve screw through holes, is fixed on the long crossbeam (34) and the vertical supporting rod (31) by M4 screws and is provided with a semicircular notch at the front end.

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