Large engine camshaft hole boring method and boring auxiliary device
A camshaft hole and engine technology, applied in positioning devices, boring/drilling, drilling/drilling equipment, etc., can solve problems such as decreased precision and large deflection of boring bar
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Embodiment 1
[0068] Example 1: See Figure 1-8 ;
[0069] The present invention provides the following technical proposal, a method for boring a camshaft hole of a large engine, which is used for processing the two ends of the engine body and the adjacent camshaft holes;
[0070] The first step is to prepare for the alignment of the main shaft; specifically:
[0071] S0: Pre-processing the first-gear camshaft hole of the engine body, using the CNC machining center to bore the first-gear camshaft holes at both ends of the engine body respectively, so that the accuracy of the inner wall hole of the first-gear camshaft is relatively improved, thereby improving the The spindle alignment accuracy.
[0072] The effect is that the first gear camshaft hole, which is the basis of alignment, is worthy of fine machining to improve accuracy; at the same time, the first gear camshaft hole is at the end of the body, which can be directly processed by a CNC machining center without installing a guide d...
Embodiment 2
[0101] Example 2: See Figure 9-10 ;
[0102] A camshaft hole boring method for a large engine, which is used for machining the camshaft hole in the middle of the engine body;
[0103] The first step to the sixth step are identical with embodiment 1;
[0104] The seventh step is to install an extension bar. When the length of the boring tool bar assembly is not enough for processing, extend the tool bar, specifically:
[0105] S7: extend the tool bar, insert the boring bar assembly on the first extension bar, so that the boring bar assembly is extended;
[0106] S8: add a second extension rod; the second extension rod is the same as the first extension rod, and is inserted in the tail of the first extension rod, so that the boring bar assembly is further extended;
[0107] S9: Step 8 is repeated until the total length of the boring bar assembly and the extension bar of the plug-in can bore the camshaft hole to be processed;
[0108] S10: Install the boring tool bar assembl...
Embodiment 3
[0117] Example 3: See figure 2 ;
[0118] A large engine camshaft hole boring method, the difference from Embodiment 1 is that the water chamber hole 42 was originally designed as a through hole on the engine body 4 for circulating cooling water; the original process route is casting The blank is then drilled into a through hole; by transforming the blank, it is transformed into a threaded fixing hole for fixing the guide device 2, after the camshaft hole is processed, the thread is cut off, and then processed to the originally designed through hole; that is By adjusting the process steps in the manufacturing process, using the water chamber hole 42, the specific method includes the following steps:
[0119] Positioning hole processing, a positioning hole with a smaller diameter is preliminarily drilled at the position of the original design water chamber hole of the blank;
[0120] Reaming and tapping, according to the above-mentioned positioning hole reaming and tapping, ...
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Abstract
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