CN201324837Y - Equipment for automatically measuring error and processing fundamental circle of half combined crank shaft main journal - Google Patents
Equipment for automatically measuring error and processing fundamental circle of half combined crank shaft main journal Download PDFInfo
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- CN201324837Y CN201324837Y CNU2008202319420U CN200820231942U CN201324837Y CN 201324837 Y CN201324837 Y CN 201324837Y CN U2008202319420 U CNU2008202319420 U CN U2008202319420U CN 200820231942 U CN200820231942 U CN 200820231942U CN 201324837 Y CN201324837 Y CN 201324837Y
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Abstract
The utility model discloses equipment for automatically measuring error and processing the fundamental circle of a half combined crank shaft main journal. The equipment comprises two pairs of diameter inductive sensors 1, 2 which are connected with a computer through a signal processing circuit A, and an angle coder connected with the computer through a signal processing circuit B, and further comprises a displayer and a keyboard which are connected with the computer. By using the equipment, an operator can make clear the roundness error, the direction of the positioning error and the error values of the to-be-processed main journal according to the overlapping standard fundamental circle curves displayed in the same coordinate system and the profile curves of the front and rear main journals of the to-be-processed main journal; and then the operator is instructed to take relevant measures like modifying the processing technique for effective processing and modification until a qualified fundamental circle is obtained. The equipment is time-saving and labor-saving, improves the processing efficiency, guarantees the working accuracy of each main journal, reduces the rejection rate, and avoids cost increase caused by material waste.
Description
Technical field:
The utility model relates to a kind of machining equipment, especially a kind of equipment that improves the automatically measuring error processing semi-unit-type crank shaft main journal basic regular circle of machining accuracy and efficient, the rate of reducing the number of rejects and seconds.
Background technology:
The fine finishining of crankshaft used for large boat is to adopt to take back the special-purpose bent axle lathe (hereinafter to be referred as crankshaft toothed wheel) that changes centre frame, supporting each grade cylinder trunnion by a plurality of V-arrangement center support framves positions, after fine finishining, except that the size and the roughness of main bearing journal need reach the designing requirement, also will guarantee the straight centering of main bearing journal axis, trunnion cylindrical form and position tolerance reaches designing requirement.But, because bent axle is very long and elbow is many, complex-shaped, poor rigidity, each grade trunnion is cut off by crank throw again, the trunnion of each " independence " under the effect of gravity, revolution centrifugal force and lathe clamping situation, be easy to generate complexity around the song distortion etc., therefore before the fine finishining main bearing journal, at first on the trunnion of " independence " of each grade disconnection, transfer benchmark one base just round in processing one circle main bearing journal school, be about to every cylinder trunnion periphery and be processed as positive circle (deviation from circular from should be enough little), and each trunnion is coaxial and concentric with the lathe axis of rotation.The just round processing of base is the most essential steps of control main bearing journal machining accuracy, only just can carry out next step fine finishining after the just round processing of base is meeting the demands.
At present, the just round concrete processing method of trunnion base is to carry out according to the processing sequence from lathe headstock to the lathe afterbody.When processing the first cylinder trunnion, bed chuck distance is very near because the first cylinder trunnion is disembarked, and locate reliably relatively, and it is very little therefore to add the man-hour position error, and processing only needs assurance to leave suitable allowance to get final product; But when processing the second cylinder trunnion, owing to need breaking away from lathe center support frame fully, processed trunnion lean on the trunnion bracing frame on adjacent both sides to bear, therefore the deviation from circular from of the trunnion (the first, the 3rd cylinder trunnion) on adjacent both sides will be influential to the deviation from circular from of the second cylinder trunnion, even its influence is enough little, but add man-hour still might be because skew takes place and produce new mismachining tolerance (position error) in the relative lathe axis of rotation in the axle center of trunnion.Yet, ending also not preferably method so far and separate various errors, the operator mostly is by virtue of experience and the measurement data for the treatment of the machining spindle neck is judged actual error.Owing to add and need carry out manual measurement repeatedly man-hour, also need to carry out pure manual grinding correction processing in case of necessity, make whole bent axle processing time and effort consuming, greatly influenced working (machining) efficiency; Nonetheless also there is certain human error, often because of judging that inaccurate the mistake will not exist the trunnion of morpheme error to process, the trunnion that has serious morpheme error is not but revised processing, be difficult to guarantee the desirable machining accuracy of processed trunnion; Even also fail to reach the basic round type attitude of drawing requirement because of being worked into dimension limit, and waste product appears thus, and cause wastage of material, production cost to strengthen.
Summary of the invention:
The utility model is at the above-mentioned technical problem of existing in prior technology, and a kind of equipment that improves the automatically measuring error processing semi-unit-type crank shaft main journal basic regular circle of machining accuracy and efficient, the rate of reducing the number of rejects and seconds is provided.
Technical solution of the present utility model is: the just round equipment of a kind of automatically measuring error processing half built-up crank shaft main shaft diameter base, the output that is provided with 1,2, two pairs of diameter inductive pick-ups 1,2 of two pairs of diameter inductive pick-ups is joined by signal processing circuit A and computer; Be provided with angular encoder, angular encoder joins by signal processing circuit B and computer; Also be connected to display and keyboard with computer.
The utility model has realized that multi-faceted error measures automatically, measurement data is accurate, can make the operator according to the shown positive circular curve of standard base overlapped in the same coordinate system, the appearance profile curve of two trunnions before and after the trunnion to be processed, the deviation from circular from of clear and definite trunnion to be processed and the direction of position error and error amount, and then prompting operation person takes to revise corresponding measures such as processing technology and effectively processes correction, it is just round to revise out satisfactory base until processing, both time saving and energy saving, improved working (machining) efficiency, also guaranteed simultaneously the machining accuracy of each trunnion, reduced the incidence of waste product, avoided strengthening the problem of cost because of wastage of material.
Description of drawings:
Fig. 1 is the utility model diameter inductive pick-up scheme of installation.
Fig. 2 is the theory diagram of the utility model equipment.
The specific embodiment:
Below in conjunction with the description of drawings specific embodiment of the present utility model.
At first the same with prior art, to finish rough machined half built-up crank shaft is installed on bent axle finishing machine (as the heavy bent axle whirling of numerical control machining center) and goes up and it is adjusted the location, process the first cylinder trunnion, a chuck distance is very near because the first cylinder trunnion is disembarked, locate reliable relatively, therefore it is very little to add the man-hour position error, and processing only needs to guarantee that leaving suitable allowance gets final product.With prior art different be from processing the second cylinder trunnion, two pairs of diameter inductive pick-ups 1,2 are installed in respectively by the first, the 3rd cylinder trunnion to be measured, angular encoder is installed near the machine chuck.Best installation method is as shown in Figure 1: a diameter inductive pick-up of every centering A is installed on horizontal level, its axis is by the machine tool rotary center, another diameter inductive pick-up B becomes 10 degree angles to install with first diameter inductive pick-up, its axis also by the machine tool rotary center, fixed by the amount instrument anchor clamps that are installed on the center support frame by two diameter inductive pick-ups.The diameter inductive pick-up adopts the high accuracy probe amount instrument (TESA 03560010+03210904) with high-abrasive material gage outfit, can directly measure the vary in diameter of trunnion, and as shown in Figure 2 measured value is imported checkout equipment, the two pairs of diameter inductive pick-ups 1,2 join by signal processing circuit A and computer; Be provided with angular encoder, angular encoder joins by signal processing circuit B and computer; Also be connected to display and keyboard with computer.The two pairs of diameter inductive pick-ups 1,2 and the resulting signal of angular encoder are respectively by signal processing circuit A, B, amplify, arrangement, analog-to-digital conversion etc. are input to computer, computer is according to using deviation from circular from, the position error that two point method deviation from circular from isolation technics can calculate measured trunnion.Usually two point method deviation from circular from isolation technics all is the comprehensive roundness error that is used to calculate axial workpiece, native system then is to utilize this method to calculate the circularity actual error value (deviation from circular from) in any direction of main bearing journal, also measures the side-play amount (position error) at the relative machine tool rotary center, axle center of trunnion in any direction simultaneously.
For avoiding frequent dismounting, the trouble that the diameter inductive pick-up is brought being installed, can be provided with and the corresponding diameter inductive pick-up of institute's machining spindle neck quantity, the output of each diameter inductive pick-up is all joined by signal processing circuit A and computer.
Utilize VC++ establishment mapping program, computer is the origin of coordinates with the machine tool rotary center then, 0 degree phase directional with bent axle is that coordinate 0 degree is set up polar coordinate system, with measured deviation from circular from, position error and corresponding angle value is foundation, set up the Mathematical Modeling of trunnion periphery contour curve, derive the polar coordinates formula of curve, draw out the appearance profile curve of the first, the 3rd cylinder trunnion that is detected; Data processor through computer, the position at the excircle configuration curve of the trunnion of surveying, the positive circular curve of standard base and relative lathe center thereof shows on display intuitively the most at last, promptly in the same coordinate system, appearance profile curves overlapped contrast with the adjacent both sides of the positive circular curve of standard base trunnion with trunnion to be processed, for providing science, the operator processes schematic diagram intuitively, prompting operation person effectively revises processing technology, realizes that treating the machining spindle neck effectively revises processing.
Claims (1)
1. the equipment of an automatically measuring error processing semi-unit-type crank shaft main journal basic regular circle, it is characterized in that: be provided with two pairs of diameter inductive pick-ups (1), (2), two pairs of diameter inductive pick-ups (1), (2) join by signal processing circuit A and computer; Be provided with angular encoder, angular encoder joins by signal processing circuit B and computer; Also be connected to display and keyboard with computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202319420U CN201324837Y (en) | 2008-12-23 | 2008-12-23 | Equipment for automatically measuring error and processing fundamental circle of half combined crank shaft main journal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202319420U CN201324837Y (en) | 2008-12-23 | 2008-12-23 | Equipment for automatically measuring error and processing fundamental circle of half combined crank shaft main journal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201324837Y true CN201324837Y (en) | 2009-10-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202319420U Expired - Fee Related CN201324837Y (en) | 2008-12-23 | 2008-12-23 | Equipment for automatically measuring error and processing fundamental circle of half combined crank shaft main journal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201324837Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949697A (en) * | 2010-09-16 | 2011-01-19 | 安阳鑫盛机床股份有限公司 | High-precision inspection device for large size machine tool spindle |
-
2008
- 2008-12-23 CN CNU2008202319420U patent/CN201324837Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949697A (en) * | 2010-09-16 | 2011-01-19 | 安阳鑫盛机床股份有限公司 | High-precision inspection device for large size machine tool spindle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091014 Termination date: 20121223 |