CN218329839U

CN218329839U - Crankshaft main journal detection device that beats

Info

Publication number: CN218329839U
Application number: CN202222587819.5U
Authority: CN
Inventors: 赵德军; 张晓宇
Original assignee: Liaoning 518 Internal Combustion Engine Fittings Co ltd
Current assignee: Liaoning 518 Internal Combustion Engine Fittings Co ltd
Priority date: 2022-09-29
Filing date: 2022-09-29
Publication date: 2023-01-17
Anticipated expiration: 2032-09-29

Abstract

The utility model discloses a crankshaft main journal runout detection device, set up the flat detection base of a rectangle, set up linear guide on the detection base, the slider with linear guide sliding fit installs together, the base of slider top with the slider is fixed together, the base upper end sets up the connecting plate, the connecting plate is fixedly connected with the pneumatic cylinder, the piston rod of pneumatic cylinder and one end fixed connection of push rod are in the same place, the other end of push rod and one end coupling of support, the support other end and the tip coupling of base; the upper end of support is the plane, and the support rolls a seat fixed connection and is in the upper end plane department of support, the support rolls the seat and sets up first breach, the second breach of two high differences, the utility model has the advantages that: centering precision is high, efficient, has realized that the quick detection bent axle main journal is beated on the lathe to more accurate understanding lathe grinding bent axle runout volume is showing to solving bent axle main journal and shake line effect.

Description

Crankshaft main journal runout detection device

Technical Field

The utility model relates to the field of machine manufacturing, a measuring device in the abrasive machining process is carried out to bent axle main journal specifically says so.

Background

The utility model discloses the crankshaft main journal in the preceding crankshaft main journal abrasive machining in-process beats and can't detect, can only detect the crankshaft main journal through beating on the outer testing platform of lathe, then goes up the lathe and processes again, and this kind of mode can process, but detection time is long, and the precision is poor.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model discloses a crankshaft main journal detection device that beats.

The specific technical scheme is as follows:

a crankshaft main journal runout detection device is provided with a rectangular flat-plate-shaped detection base, a linear guide rail is arranged on the detection base, a sliding block and the linear guide rail are installed together in a sliding mode, the base above the sliding block is fixed with the sliding block, a connecting plate is arranged at the upper end of the base and fixedly connected with a hydraulic cylinder, a piston rod of the hydraulic cylinder is fixedly connected with one end of a push rod, the other end of the push rod is connected with one end of a support in a shaft mode, and the other end of the support is connected with the end portion of the base in a shaft mode; the upper end part of the support is a plane, the roller bearing is fixedly connected to the plane of the upper end part of the support, the roller bearing is provided with a first notch and a second notch which are different in height, a bolt is arranged in the first notch in a penetrating mode and abutted to the outer wall of the first notch, a bearing is arranged in the inner wall of the first notch, the inner ring of the bearing is sleeved on the bolt, the outer ring of the bearing is abutted to the outer circle of a main journal to be tested, and a nut is screwed on the bolt and abutted to the outer wall of the first notch; the structural relationship between the second notch and the bolt, the nut and the bearing is consistent with the structural relationship between the first notch and the bolt, the nut and the bearing.

The base is provided with an arc notch.

The utility model has the advantages that: centering precision is high, efficient, has realized that the quick detection bent axle main shaft journal is beated on the lathe to more accurate understanding machine tool grinding bent axle runout volume is showing to solving bent axle main shaft journal and shake line effect comparison.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a partial cross-sectional view taken at K-K of FIG. 1;

FIG. 3 is a partial cross-sectional view taken at P-P of FIG. 1;

fig. 4 is a left side view of fig. 1.

Detailed Description

The present invention is described in detail with reference to the accompanying drawings, as shown in fig. 1 and fig. 2, a crankshaft main journal run-out detection device is provided with a rectangular flat detection base 22, a linear guide rail 1 is arranged on the detection base, a slider 2 is slidably mounted with the linear guide rail 1, a base 3 above the slider 2 is fixed with the slider 2, a connecting plate 4 is arranged at the upper end of the base, the connecting plate 4 is fixedly connected with a hydraulic cylinder 5, a piston rod 21 of the hydraulic cylinder 5 is fixedly connected with one end of a push rod 11, the other end of the push rod 11 is coupled with one end of a bracket 6, and the other end of the bracket 6 is coupled with the end of the base 3; the upper end part 29 of the support 6 is a plane, the roller bearing 7 is fixedly connected to the plane of the upper end part 29 of the support, the roller bearing 7 is provided with a first notch 34 and a second notch 36 which are different in height, the bolt 13 penetrates through the first notch 34 and abuts against the outer wall of the first notch 34, the bearing 14 is arranged in the inner wall of the first notch 34, the inner ring of the bearing 14 is sleeved on the bolt 13, the outer ring of the bearing 14 abuts against the outer circle 29 of the main journal to be tested, and the nut 16 is screwed on the bolt and abuts against the outer wall of the first notch 34; the structural relationship between the second notch 36 and the bolt 13, the nut 16 and the bearing 14 is the same as the structural relationship between the first notch 34 and the bolt 13, the nut 16 and the bearing 14.

The base is provided with an arc notch 30; the arc notch can reduce the weight of the structure on one hand, and the position of the shaft connection between the push rod 11 and the bracket 6 can be observed on the other hand, so that the observation and the maintenance are convenient;

the utility model discloses a theory of operation is: firstly, wiping a journal of a crankshaft to be processed, and placing the crankshaft on a machine tool to be positioned and clamped by using tops at two sides; then the piston rod 21 is driven to extend through the hydraulic cylinder 5, the piston rod 21 is connected with the push rod 11, in the moving process of the push rod 11, the end part of the push rod 11 is in shaft connection with the support 6, meanwhile, the support 6 is in shaft connection with the base 3, therefore, the support 6 can rotate around a shaft through the shaft connection part of the support and the base, as the support 6 is fixedly connected with the roller support 7, the support 6 and the roller support 7 are driven to move together, the bearings 14 in the first notch 34 and the second notch 36 move together to support a main journal of a crankshaft, the left-right direction movement (namely the left-right direction in the figure 1) of the device is fixed together with the slide block 2 through the base 3, the free movement of the slide block 2 on the linear guide rail 1 realizes that the bearings 14 at the upper end of the device automatically contact with two sides of the main journal of the crankshaft, the accurate and rapid detection of the main journal of the crankshaft, so as to more accurately guide the grinding of the crankshaft of a machine tool to jump, in addition, the extending and retracting mode of a hydraulic structure is adopted, the outer circle displacement of the roller support can be effectively limited, after the bearings are abutted against the main journal, the piston rod 21 is fixed and can prevent the support 6 from shaking.

Claims

1. The utility model provides a bent axle main journal detection device that beats which characterized in that: the detection device is characterized in that a rectangular flat plate-shaped detection base is arranged, a linear guide rail is arranged on the detection base, a sliding block and the linear guide rail are installed together in a sliding mode, the base above the sliding block is fixed with the sliding block, a connecting plate is arranged at the upper end of the base and fixedly connected with a hydraulic cylinder, a piston rod of the hydraulic cylinder is fixedly connected with one end of a push rod, the other end of the push rod is connected with one end of a support in a shaft mode, and the other end of the support is connected with the end portion of the base in a shaft mode; the upper end part of the support is a plane, the roller bearing is fixedly connected to the plane of the upper end part of the support, the roller bearing is provided with a first notch and a second notch which are different in height, a bolt is arranged in the first notch in a penetrating mode and abutted to the outer wall of the first notch, a bearing is arranged in the inner wall of the first notch, the inner ring of the bearing is sleeved on the bolt, the outer ring of the bearing is abutted to the outer circle of a main journal to be tested, and a nut is screwed on the bolt and abutted to the outer wall of the first notch; the structural relationship between the second notch and the bolt, the nut and the bearing is consistent with the structural relationship between the first notch and the bolt, the nut and the bearing.

2. The crankshaft main journal runout detecting device according to claim 1, characterized in that: the base is provided with an arc notch.