CN106017276A - Crankshaft center distance detecting tool - Google Patents

Abstract

The invention relates to a crankshaft center distance detection tool, which includes a linear guide rail, a slider, a cross beam, a V-shaped block of a main shaft, a V-shaped block of a connecting rod, a connecting plate, and a dial indicator. The two V-shaped blocks of the main shaft are fixed on the On the beam, the center of the beam is fixed on the lower end of the linear guide rail; the V-shaped block of the connecting rod is installed on the linear guide rail; the connecting plate is installed on the upper end of the linear guide rail, and the dial indicator is fixed on the connecting plate. The main arm of the rod V-shaped block is in contact, and the distance between the centerline of the main journal and the centerline of the connecting rod journal can be measured through the reading of the dial indicator. The invention has reasonable structure and simple operation, can directly clamp the V-shaped block of the main shaft and the V-shaped block of the connecting rod on the main journal and the connecting rod journal of the crankshaft, and can directly measure the center distance of the crankshaft through the reading of the dial indicator. Fast and accurate, suitable for measuring the center distance of crankshafts under different conditions.

Description

A crankshaft center distance detection tool

technical field

The invention relates to an auxiliary inspection tool for crankshaft processing, in particular to a detection tool for the center distance of a crankshaft.

Background technique

The crankshaft is the core component of the engine, and its size requirements are very strict. During the crankshaft production process, it is necessary to detect the distance L (generally called the center distance) between the centerline of the crankshaft main journal and the centerline of the connecting rod journal. In the past, general measuring tools were used to detect the center distance, but the detection efficiency was low, time-consuming and labor-intensive. With the gradual expansion of crankshaft production scale, the general measuring tool detection method can no longer meet the needs of crankshaft production increase.

Contents of the invention

The technical problem to be solved by the present invention is to overcome the deficiencies of the above-mentioned prior art and provide a crankshaft center distance detection tool with reasonable structure, simple operation, accurate measurement and high working efficiency.

The technical solution adopted by the present invention to solve the above technical problems is: a crankshaft center distance detection tool, characterized in that it includes a linear guide rail, a slider, a beam, a V-shaped block of a main shaft, a V-shaped block of a connecting rod, a connecting plate, and a dial indicator , the two V-shaped blocks of the main shaft are fixed on the beam by fastening screws, and the center of the beam is fixed on the lower end of the linear guide rail; the V-shaped block of the connecting rod is fixed on the slider, which is installed on the linear guide rail, and can be The guide rail slides freely up and down; the connecting plate is installed on the upper end of the linear guide rail, the dial indicator is fixed on the connecting plate, the telescopic probe of the dial indicator is in contact with the main arm of the V-shaped block of the connecting rod, and the spindle is realized through the reading of the dial indicator. The measurement of the distance between the centerline of the neck and the centerline of the connecting rod journal.

When the present invention is used, at first calibrate the position of the V-shaped block of the connecting rod with the standard size block, and determine the position of the V-shaped block of the connecting rod and the zero point of the dial indicator. When measuring, the two V-shaped blocks of the main shaft straddle the two adjacent main journals, adjust the slider, and drive the V-shaped block of the connecting rod to slide up and down through the slider, so that the V-shaped grooves of the V-shaped block of the connecting rod are stuck in the two On the connecting rod neck in the middle of the main journal, the main arm touched by the V-shaped block of the connecting rod touches the contact of the dial indicator, and the dial indicator produces a reading. The center distance to be measured can be obtained by adding the size of the standard size block and the reading of the dial indicator. Compared with the prior art, the present invention has a reasonable structure, can directly clamp the V-shaped block of the main shaft and the V-shaped block of the connecting rod on the main journal and the connecting rod journal of the crankshaft, and can directly measure the center distance of the crankshaft through the reading of the dial indicator , fast and accurate measurement, high work efficiency, suitable for the measurement of crankshaft center distance L under different conditions.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings.

Fig. 1 is a schematic diagram of the composition and structure of the present invention.

Fig. 2 is a schematic diagram of the detection assembly state of the present invention.

1. Main shaft V-shaped block, 2. Crossbeam, 3. Linear guide rail, 4. Slide block, 5. Connecting rod V-shaped block, 6. Connecting plate, 7. Dial indicator.

detailed description

As shown in Figure 1 and Figure 2, a crankshaft center distance detection tool includes linear guide rail 3, slider 4, spindle V-shaped block 1, connecting rod V-shaped block 5, beam 2, connecting plate 6, dial indicator 7 Wait. The linear guide rail, spindle V-shaped block, connecting rod V-shaped block, beam, slider and connecting plate are made of 42CrMo material after quenching and tempering treatment, and the surface is quenched after processing to ensure sufficient hardness and wear resistance.

The characteristics of the present invention are: the two spindle V-shaped blocks 1 are fixed on the beam 2 by fastening screws, and the center of the beam 2 is fixed on the lower end of the linear guide rail 3; the connecting rod V-shaped block 5 is fixed on the slider 4 On, the slide block 4 is installed with the linear guide rail 3, and can freely slide up and down along the linear guide rail 3; The telescopic probe is in contact with the main arm of the V-shaped block 5 of the connecting rod, and the measurement of the distance between the centerline of the main journal and the centerline of the connecting rod journal is realized through the reading of the dial indicator 7 .

When the present invention uses, at first with measured crankshaft center distance theoretical dimension L1 identical standard size block calibration connecting rod V-shaped block position, determine the zero point of the position of connecting rod V-shaped block and dial gauge. When measuring, the two V-shaped blocks of the main shaft straddle the two adjacent main journals, adjust the slider, and drive the V-shaped block of the connecting rod to slide up and down through the slider, so that the V-shaped grooves of the V-shaped block of the connecting rod are stuck in the two On the connecting rod neck in the middle of the main journal, the main arm touched by the V-shaped block of the connecting rod touches the contact of the dial indicator, and the dial indicator produces a reading. At this time, the reading of the dial gauge is L2. Then the sum of L1 and L2 is the center distance of the crankshaft.

The invention has a reasonable structure, can directly clamp the V-shaped block of the main shaft and the V-shaped block of the connecting rod on the main journal and the connecting rod journal of the crankshaft, and can directly measure the center distance of the crankshaft through the reading of the dial indicator, and the measurement is fast and accurate. It is suitable for the measurement of crankshaft center distance under different conditions.

Claims (1)

1. a crankshaft center is away from detection instrument, it is characterized in that: include line slideway, slide block, crossbeam, main shaft vee-block, connecting rod vee-block, connecting plate, dial gauge, two main shaft vee-blocks are fixed on crossbeam by trip bolt, and the center of crossbeam is fixed on the lower end of line slideway；Described connecting rod vee-block is fixed on slide block, and slide block is installed on line slideway, and can linearly freely up and down slide by guide rail；Described connecting plate is arranged on the upper end of line slideway, and dial gauge is fixed on connecting plate, and the flexible probe of dial gauge contacts with the principal arm of connecting rod vee-block, is realized the measurement of trunnion centrage and the spacing of rod journal centrage by the reading of dial gauge.