JPS63150153A - Bore machining monitor for cylinder block - Google Patents

Abstract

PURPOSE:To facilitate confirmation of correcting state during machining and quality data after the end of machining by finding out a bore contiguration and quality data by means of a data processing calculator on the basis of detected bore diameter and/or stroke value and displaying those data as picture images. CONSTITUTION:An interface 16 receives the rotational direction phase, belonging to a motor 22 which rotates the spindle of a hone head, and detected by a phase detector 24 in response to scan time coming from the sequencer 26 of a phase detector 10 and also receives a stroke position detected, by a position detector 12 having a microcomputer 28 for controlling honing machining, from a pulse signal of an encoder 30 directly connected to a motor 32 for making reciprocation control. In addition, a bore diameter signal detected by a bore diameter sensor 34 of an air type or laser type is simultaneously amplified by means of the constant sizing device 36 of a bore diameter measuring instrument 4 and sent to the interface 6 as well as displayed, and further a bore contiguration and quality data are sought by data processing calculator 18 together with abovementioned signal and shown on an image display 20. Quick quality control is made avaible in this way.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a cylinder block bore machining monitoring device for grasping the machining status and quality control of a cylinder block that has been bored by a honing machine.

[Prior Art] There is a well-known honing machine that forms a bore by pressing a rod-shaped grinding stone (hereinafter referred to as a horn head) that is attached to a tool body against a processing part of a cylinder block and giving it rotation and reciprocating motion. This honing machine ensures good quality of the bore by repeatedly machining the bore while correcting errors in roundness, cylindricity, and straightness of the bore.

In such bore machining, it is essential to measure the bore formation state, and this measurement is carried out using a measuring instrument such as an air gauge during the honing process or upon completion of the honing process.

``Problems to be solved by the invention'' However, conventional measurements using measuring instruments are complicated, and there is a problem in that it is impossible to quickly control the machining status during bore machining and the quality after machining is completed. Ta.

In other words, although it is possible to determine the diameter of the bore formed with a measuring instrument, it is difficult to confirm the overall shape of the bore, and after the completion of machining, it is difficult to determine the roundness of the bore after determining the bore diameter at that time. There is a problem in that an operator must calculate quality data such as cylindricity, straightness, etc., and it takes time to calculate this data and examine bore quality based on the data.

As a conventional technique to solve such problems,
There is a honing machine shown in No. 56378, according to which it is possible to combine the honing machine and a workpiece measuring device to obtain the necessary data for bore management, and even with this, the machining condition of the bore still remains. and bore quality control cannot be easily and quickly performed. In addition, as other conventional techniques, JP-A No. 57-96765 and JP-A No. 59-81
There are issues such as No. 055.

Purpose of the Invention The present invention +, 1 has been made in view of the above-mentioned conventional problems, and its purpose is to easily calculate bore shape and quality data regarding the bore, and to quickly perform quality control based on this quality data. It is an object of the present invention to provide a cylinder block bore machining monitoring device that can perform boring machining.

[Means for Solving the Problems] In order to achieve the above-mentioned objective 1, the present invention first provides a controller, a position detector, and an all bore diameter regulator, and the controller is installed in a honing machine. Jllll control is performed to bore the cylinder block, and controls the start and end of honing, data input/output timing, etc., and the position detector detects the -1-downward stroke position of the horn head during machining. The bore diameter measuring device measures the bore diameter during processing.

Further, an interface with a data processing computing unit is provided, and the data processing computing unit is connected to the controller during processing.

The bore shape, that is, the bore cross-sectional shape, is calculated from data signals output from the position detector and the bore diameter measuring device, and after machining is completed, quality data for controlling the quality of the bore is calculated, and the interface uses the data. Converts a signal into a signal that can be calculated by a data processing calculator.

Furthermore, the present invention provides an output from the data processing arithmetic unit.

A display device is provided to display the quality data as an image, which makes it possible to check the bore cross-sectional shape and quality data at a glance.

[Operation] According to the second configuration, when the bore of the cylinder block is honed, the stroke position of the horn head and the bore diameter at that position are first measured. These data signals are converted by a data processing calculator into quality data for managing the bore cross-sectional shape and bore quality, and this quality data is supplied to a display device.

Therefore, the bore cross-sectional shape and calculated quality data, such as roundness, cylindricity, and straightness, are displayed as images on the display device, making it possible to quickly evaluate the machining status and quality data of the workpiece. It becomes possible.

[Embodiments] Hereinafter, preferred embodiments of the present invention will be described based on the drawings.

FIG. 1 shows the main components of the bore machining monitor device, in which 10 is a controller that controls bore machining, 12 is a position detector that detects a reciprocating stroke, and 14 is a bore diameter measuring device. is connected to a data processing calculator 18 via an interface 16. This interface 16 performs data conversion processing between the device and the data processing calculator 18.
calculates quality data for quality control.

A display device 20 made of a CRT is connected to the data processing arithmetic unit 18.

FIG. 2 shows the actual hardware in the configuration of FIG. 1, and each configuration will be explained in detail. The control device 10 includes a phase detector 24 for obtaining the rotational phase from a main shaft rotation motor 22 that rotates the main shaft of the horn head, and a sequencer 2 for executing a machining cycle.
Consists of 6.

The phase detector 24 determines the position on the bore circumference, for example, by
The coordinate is replaced with "2", and a phase signal corresponding to the phase of this XY coordinate "-" is output. Here, the reason why the phase signal from the phase detector 24 is not passed through the sequencer 26 is to prevent the phase signal from the sequencer 26 from being overlooked, that is, from being overlooked due to the scan time of the sequencer 26.

In addition, the position detector 12 includes a honing control microcomputer 28 that controls the movement of the pawn cycle in the reciprocating direction, and an encoder 30, and the stroke value of the horn head is used for simple control to drive the main shaft in the reciprocating direction. By converting the phase pulse from the encoder 30 directly connected to the motor 32, the stroke position of the horn head can be detected.

Further, the bore diameter measuring device 14 includes a bore diameter sensor 34 of an air type or a laser type, and a sizing device (amplifier) 36 that amplifies the output of the bore diameter sensor 34. In this case, the bore diameter is determined from the pressure of the air sent to the bore wall, and in the case of a laser method, the bore diameter is determined from the reflected light of the laser beam irradiated onto the bore wall. The output of the bore diameter sensor 34 is supplied to a sizing device 36, and the sizing device 36 outputs an analog voltage value proportional to the remaining machining allowance until the set bore diameter is reached.

The interface 16 also includes an I10 module 38 that converts control signals, stroke signals, and bore diameter signals into computable signals, and an A/D conversion module 40 that converts analog signals from the sizing device 36 into digital signals. Consisting of

The data processing calculator 18 is an I10 module 38.
A microcomputer can be used by inputting digital signals output from the A/D conversion module 40 and calculating quality data.

That is, the stroke value indicating the current position of the horn head and the bore diameter are input to the data processing calculator 18, or the stroke value is first read and then the bore diameter is read after processing. The diameter of the bore in the reciprocating direction can be determined.

This embodiment has the following configuration, and its operation will be explained below.

When the horn head starts reciprocating motion for grinding, its trajectory on the time axis will draw the waveform shown in FIG. 3.

Therefore, one cycle of the reciprocating motion of the horn head 42 shown in the figure starting from the upper or lower end is divided into two as shown in the figure, and in this divided area, various data are input from the lower end of the cycle to the first end. From the first end to the bottom end, the calculation results are displayed on the display. Note that this processing cycle is repeated until processing is completed.

Then, as described above, between the lower end and the upper end of the cycle, the data processing calculator 18 sequentially reads the bore diameter corresponding to the stroke position of the horn head, so that the bore diameter at each position in the reciprocating direction is calculated. The bore diameter is determined, and the cross-sectional shape of the bore being machined is determined based on this bore diameter. In this case, since the bore cross-sectional shape is determined for each point on the bore circumference -L, it is necessary to match the rotational phase of the main shaft with the set position of the bore circumference -1 for which the bore diameter is to be determined. , the phase signal from the phase detector 24 is constantly monitored.

Then, as shown in FIG. 4, this cross-sectional shape is displayed on the screen of the display device 20 as a bore cross-sectional shape line 200 with respect to the bore center line 100, and this shows the bore diameter and bore diameter at the stroke position of the horn head 42. The overall cross-sectional shape can be seen at a glance.

Also, after the pressurization is completed (or is the quality data for J-bore quality control calculated? In this case, the calculation is the latest data of stroke value and bore diameter before machining is completed (the number of data is arbitrary) Using this data, the roundness,
Cylindricity, straightness, etc. are determined, and this quality data is displayed as a numerical value on a display device 20'2.

Therefore, it is possible to quickly confirm and evaluate the machining state of the bore based on the cross-sectional shape, and the quality of the machined bore based on the quality data displayed as an image.

As explained in ``Effects of the Invention'' 2, according to the present invention, the bore shape and quality data are obtained by a data processing calculator using the bore diameter and stroke value, and this is displayed as an image. During machining, the bore shape and its modification status can be easily checked, and after machining is completed, quality data such as the roundness of the bore can be easily checked, allowing prompt quality control.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing a preferred embodiment of a cylinder block bore machining monitor device according to the present invention, FIG. 2 is an explanatory diagram showing specific hardware of the embodiment of FIG. 1, and FIG. Data calculation processing in machining cycle = 11
FIG. 4 is an explanatory diagram showing the display state of the display device. 10...Controller 12...Position detector 14...Bore diameter measuring device 16...Interface 18...Data processing calculator 20...Display device

Claims (1)

[Claims] (1) A controller for boring a cylinder block with a honing machine, a position detector for detecting the vertical stroke position of the horn head during processing, and a bore for measuring the bore diameter during processing. A diameter measuring device, a data processing calculator that calculates the bore shape from various data signals during machining, and calculates quality data for controlling the quality of the bore after machining is completed, the controller, and a position detector. and a display device that displays an image of the quality data output from the data processing calculator. Cylinder block bore machining monitor device.