CN212253973U

CN212253973U - Crankshaft thrust surface flatness verticality gauge

Info

Publication number: CN212253973U
Application number: CN202021481979.6U
Authority: CN
Inventors: 周磊
Original assignee: Zhengzhou Xintai Precision Measuring Instrument Co ltd
Current assignee: Zhengzhou Xintai Precision Measuring Instrument Co ltd
Priority date: 2020-07-24
Filing date: 2020-07-24
Publication date: 2020-12-29
Anticipated expiration: 2030-07-24

Abstract

The utility model discloses a crankshaft thrust surface planeness verticality gauge, which comprises a base, wherein a crankshaft supporting block and a linear guide rail which are mutually connected in a sliding way are arranged above the base; the linear guide rail is fixed on the base; the base is connected with a crankshaft thrust surface positioning structure and a pressing device which are positioned on two sides of the crankshaft supporting block and are oppositely arranged; and the base is also connected with a verticality measuring instrument and a levelness measuring instrument which correspond to the thrust surface of the crankshaft. The utility model provides a bent axle thrust face plane degree of straightness that hangs down examines utensil can detect bent axle thrust face's plane degree and hang down straightness on examining utensil, saves time, raises the efficiency and detects the precision.

Description

Crankshaft thrust surface flatness verticality gauge

Technical Field

The utility model relates to a bent axle quality testing field especially relates to a bent axle thrust surface plane degree straightness that hangs down examines utensil.

Background

According to the requirement of crankshaft machining, the levelness and verticality of the thrust surface are required to be ensured in the machining process. Because the crankshaft needs to run at high speed, the requirement on the levelness and the verticality of the thrust surface is high. The traditional special gauge can only measure the planeness or the verticality, and different gauges can be manufactured according to different crankshaft models. Therefore, the traditional special gauge has the following problems in measuring the thrust surface of the crankshaft: 1) the universality is poor, only single measurement can be carried out, too large floor area can be caused by designing a plurality of detecting tools, and the field utilization efficiency is not high; 2) the levelness and the verticality need to be measured on two checking tools, the large measurement error is caused by repositioning, and the labor is wasted.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a bent axle thrust surface plane degree of straightness that hangs down examines utensil can detect bent axle thrust surface's plane degree and hang down straightness on examining utensil, saves time, raises the efficiency and detects the precision.

In order to achieve the purpose, the utility model provides a crankshaft thrust surface planeness verticality gauge, which comprises a base, wherein a crankshaft supporting block and a linear guide rail which are mutually connected in a sliding way are arranged above the base; the linear guide rail is fixed on the base; the base is connected with a crankshaft thrust surface positioning structure and a pressing device which are positioned on two sides of the crankshaft supporting block and are oppositely arranged; and the base is also connected with a verticality measuring instrument and a levelness measuring instrument which correspond to the thrust surface of the crankshaft.

As a further improvement, the upper part of the crankshaft supporting block is provided with a V-shaped groove, and the length direction of the V-shaped groove is parallel to the linear guide rail.

As a further improvement of the utility model, a first hard alloy layer is embedded in the inner side of the V-shaped groove of the crankshaft supporting block.

As a further improvement of the present invention, the crankshaft thrust surface positioning structure comprises a positioning block bracket and a positioning block which are in up-down sliding fit with each other; the lower part of the positioning block support is connected with the base, and the positioning block support is connected with the positioning block through a screw.

As a further improvement of the utility model, a second hard alloy layer used for contacting with the crankshaft thrust surface is arranged on the positioning block.

As a further improvement of the utility model, the pressing device comprises a pressing driving mechanism and a bracket; the lower end of the bracket is connected with the base, the upper end of the bracket is connected with the fixed end of the pressing driving mechanism, and the movable end of the pressing driving mechanism is connected with the elastic pressing block; the elastic pressing block is arranged opposite to the crankshaft thrust surface positioning structure.

As a further improvement of the present invention, the verticality measuring apparatus includes two flexible gauge sensors, which are respectively located on two sides of the central line of the crankshaft support block; each flexible gauge sensor is connected with the base through a position adjusting support.

As a further improvement, the levelness measuring instrument is a lever-type dial indicator, and levelness measuring instrument sliding connection has a slide rail, and the slide rail is connected with the base, the slide rail with linear guide is mutually perpendicular.

Advantageous effects

Compared with the prior art, the utility model discloses a bent axle thrust face plane degree of straightness that hangs down examines advantage does:

1. during detection, the crankshaft is placed on the crankshaft supporting block, the position of the crankshaft supporting block can be adjusted according to the gravity center of the crankshaft, and then the crankshaft is clamped together through the crankshaft thrust surface positioning structure and the pressing device. And then, the levelness and the verticality of the thrust surface of the crankshaft are respectively measured by a verticality measuring instrument and a levelness measuring instrument. The detection tool can detect the planeness and the verticality of the thrust surface of the crankshaft respectively, the crankshaft does not need to be repeatedly positioned, time is saved, and detection efficiency and detection precision are improved.

2. The V type groove on crankshaft support piece upper portion can the bent axle of a plurality of different diameters, and cooperation closing device and the high adjustable locating piece of bent axle thrust surface location structure can realize the bent axle of a utensil adaptation multiple specification, and the commonality is high, reduces the required quantity of examining the utensil, reduces equipment cost, reduces equipment area.

3. A first hard alloy layer is embedded on the inner side of the V-shaped groove of the crankshaft supporting block, and a second hard alloy layer used for being in contact with a crankshaft thrust surface is arranged on the positioning block. The hard alloy is not easy to deform due to the pressure of the crankshaft, and the high positioning precision of the detector can be ensured.

4. The elastic pressing block pressing the movable end of the driving mechanism can ensure that the end part of the crankshaft is pressed, can avoid the deformation of the crankshaft and prevent the crankshaft from being damaged in the detection process.

5. Each flexible gauge sensor is connected with the base through a position adjusting support, the lever type dial indicator is connected with the base through a sliding rail, the position of the lever type dial indicator can be adjusted according to needs, a proper measuring position is selected, and applicability is improved.

The invention will become more apparent from the following description when taken in conjunction with the accompanying drawings which illustrate embodiments of the invention.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a front view of a crankshaft thrust surface flatness perpendicularity gauge;

FIG. 2 is a top view of a crankshaft thrust surface flatness perpendicularity gauge;

FIG. 3 is an enlarged view of FIG. 2 at A;

FIG. 4 is a view taken in the direction K of FIG. 1;

fig. 5 is a schematic view of a standard.

Detailed Description

Embodiments of the present invention will now be described with reference to the accompanying drawings.

Examples

The utility model discloses a specific embodiment is as shown in fig. 1 to fig. 5, a crankshaft thrust surface plane degree straightness examines utensil that hangs down, including base 2, base 2 top is equipped with mutual sliding connection's bent axle supporting shoe 5 and linear guide 6. The linear guide 6 is fixed on the base 2. The base 2 is connected with a crankshaft thrust surface positioning structure and a pressing device which are positioned on two sides of the crankshaft supporting block 5 and are oppositely arranged. The base 2 is also connected with a verticality measuring instrument 7 and a levelness measuring instrument 8 which correspond to the thrust surface of the crankshaft.

The upper part of the crankshaft supporting block 5 is provided with a V-shaped groove, and the length direction of the V-shaped groove is parallel to the linear guide rail 6. In this embodiment, the first hard alloy layer 51 is embedded inside the V-shaped groove of the crankshaft support block 5. In use, the standard 11 and the crankshaft 15 are both in contact with the first cemented carbide layer 51.

The crankshaft thrust surface positioning structure comprises a positioning block bracket 3 and a positioning block 4 which are in up-down sliding fit with each other. The lower part of the positioning block bracket 3 is connected with the base 2, and the positioning block bracket 3 is connected with the positioning block through a screw 31. In this embodiment, the positioning block 4 is embedded with a second hard alloy layer 41 for contacting with the crankshaft thrust surface on the side facing the crankshaft thrust surface. The positioning block bracket 3 is provided with a strip-shaped hole extending up and down, and the screw 31 passes through the strip-shaped hole of the positioning block bracket 3 and is in threaded connection with the positioning block 4. By adjusting the height of the positioning block 4, the second hard alloy layer 41 can be ensured to be in contact with the thrust surface of the crankshaft 15 with the corresponding specification.

The pressing device comprises a pressing driving mechanism 10 and a bracket 9. The lower end of the bracket 9 is connected with the base 2, and the upper end of the bracket 9 is connected with the fixed end of the pressing driving mechanism 10. The movable end of the pressing driving mechanism 10 is connected with an elastic pressing block 101, specifically made of nylon. The elastic pressing block 101 is arranged opposite to the crankshaft thrust surface positioning structure. The pressing driving mechanism 10 can be a linear motor or an air cylinder, in this embodiment, an air cylinder is adopted, and the base 2 is provided with a pneumatic switch 12 connected with the air cylinder.

The verticality measuring instrument 7 comprises two flexible gauge sensors which are respectively positioned at two sides of the central line of the crankshaft support block 5. Each of the flexible gauge sensors is connected to the base 2 by a position adjusting bracket 13. The position adjusting bracket 13 may be a rod-shaped bracket provided with a plurality of lockable nodes, or a bracket provided with XYZ axes.

The levelness measuring instrument 8 is a lever type dial indicator, the levelness measuring instrument 8 is connected with a sliding rail 14 in a sliding mode, the sliding rail 14 is connected with the base 2, and the sliding rail 14 is perpendicular to the linear guide rail 6.

During detection, the standard part 11 is firstly placed on the V-shaped groove of the crankshaft support block 5, and the standard part 11 is tightly attached to the second hard alloy layer 41 of the positioning block 4. The flexible gauge sensor and the lever type dial indicator are moved to enable the flexible gauge sensor and the lever type dial indicator to have a number indication (the number can be adjusted to be easy to memorize). The crankshaft 15 replaces the standard 11 and is measured accordingly. And the measuring end of the lever type dial indicator moves along the radial direction of the thrust surface of the crankshaft 15 to measure the flatness. The measuring ends of the two flex gauge sensors are also in contact with the thrust face of the crankshaft 15.

The present invention has been described above with reference to the preferred embodiments, but the present invention is not limited to the above-disclosed embodiments, and various modifications, equivalent combinations, which are made according to the essence of the present invention, should be covered.

Claims

1. A crankshaft thrust surface flatness verticality gauge comprises a base (2), and is characterized in that a crankshaft support block (5) and a linear guide rail (6) which are mutually connected in a sliding manner are arranged above the base (2); the linear guide rail (6) is fixed on the base (2); the base (2) is connected with a crankshaft thrust surface positioning structure and a pressing device which are positioned at two sides of the crankshaft supporting block (5) and are oppositely arranged; the base (2) is also connected with a verticality measuring instrument (7) and a levelness measuring instrument (8) which correspond to the thrust surface of the crankshaft.

2. The crankshaft thrust surface flatness perpendicularity gauge according to claim 1, characterized in that a V-shaped groove is formed in the upper portion of the crankshaft support block (5), and the length direction of the V-shaped groove is parallel to the linear guide rail (6).

3. The crankshaft thrust surface flatness perpendicularity gauge according to claim 2, characterized in that a first hard alloy layer (51) is embedded inside a V-shaped groove of the crankshaft support block (5).

4. The crankshaft thrust surface flatness perpendicularity gauge according to claim 1, wherein the crankshaft thrust surface positioning structure comprises a positioning block bracket (3) and a positioning block (4) which are in up-down sliding fit with each other; the lower part of the positioning block support (3) is connected with the base (2), and the positioning block support (3) is connected with the positioning block through a screw (31).

5. The crankshaft thrust surface flatness perpendicularity gauge according to claim 4, characterized in that a second hard alloy layer (41) used for being in contact with the crankshaft thrust surface is arranged on the positioning block (4).

6. The crankshaft thrust surface flatness perpendicularity gauge according to claim 1, characterized in that the pressing device comprises a pressing driving mechanism (10) and a bracket (9); the lower end of the support (9) is connected with the base (2), the upper end of the support (9) is connected with the fixed end of the pressing driving mechanism (10), and the movable end of the pressing driving mechanism (10) is connected with an elastic pressing block (101); and the elastic pressing block (101) is arranged opposite to the crankshaft thrust surface positioning structure.

7. The crankshaft thrust surface flatness perpendicularity gauge according to claim 1, characterized in that the perpendicularity measuring instrument (7) comprises two flexible gauge sensors, which are respectively located on both sides of a center line of the crankshaft support block (5); each flexible gauge sensor is connected with the base (2) through a position adjusting bracket (13).

8. The crankshaft thrust surface flatness perpendicularity gauge according to claim 1, characterized in that the flatness measuring instrument (8) is a lever-type dial indicator, the flatness measuring instrument (8) is slidably connected with a slide rail (14), the slide rail (14) is connected with the base (2), and the slide rail (14) is perpendicular to the linear guide rail (6).