恒力制动器成功自创ATC机械臂主轴
发布时间： 2015-10-26 作者：闻 倩 来源： 《靖江企业家》2015第10期
摘要： 恒力制动器成功自创ATC机械臂主轴。
日前，江苏恒立制动器公司加工中心换刀机构（ATC机械臂）主轴断裂。当时国内没有现货，如需购置，要经第三方中介机构向台湾厂家订购。如此一来，维修的周期延长，修理成本增加，耽误车间生产时间，公司十分急迫。无奈之下他们决定自己试制该型号零部件。由于整个团队集思广益，通力协作，最终成功试制出了该型号零部件。经检测，精度达到了进口零部件的精度标准。部件的试制成功，整个ATC系统得到了及时、完整的修复，不仅为车间生产节省了大量的时间，而且还节约了费用，其费用不及整个采购费用的十分之一，为今后同类故障开创了一次大胆的尝试。
Tags：
get(tagStr) failed on instance of com.yeesoft.b2b.entity.News
The problematic instruction:
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==> if-else [on line 49, column 7 in news/show.html]
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Java backtrace for programmers:
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freemarker.template.TemplateModelException: get(tagStr) failed on instance of com.yeesoft.b2b.entity.News
at freemarker.ext.beans.BeanModel.get(BeanModel.java:223)
at freemarker.core.Dot._getAsTemplateModel(Dot.java:76)
at freemarker.core.Expression.getAsTemplateModel(Expression.java:89)
at freemarker.core.BuiltIn$has_contentBI._getAsTemplateModel(BuiltIn.java:666)
at freemarker.core.BuiltIn$has_contentBI.isTrue(BuiltIn.java:678)
at freemarker.core.IfBlock.accept(IfBlock.java:80)
at freemarker.core.Environment.visit(Environment.java:209)
at freemarker.core.MixedContent.accept(MixedContent.java:92)
at freemarker.core.Environment.visit(Environment.java:209)
at freemarker.core.Environment.process(Environment.java:189)
at freemarker.template.Template.process(Template.java:237)
at org.springframework.web.servlet.view.freemarker.FreeMarkerView.processTemplate(FreeMarkerView.java:366)
at org.springframework.web.servlet.view.freemarker.FreeMarkerView.doRender(FreeMarkerView.java:283)
at org.springframework.web.servlet.view.freemarker.FreeMarkerView.renderMergedTemplateModel(FreeMarkerView.java:233)
at org.springframework.web.servlet.view.AbstractTemplateView.renderMergedOutputModel(AbstractTemplateView.java:167)
at org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:262)
at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1180)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:950)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:852)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882)
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:778)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:620)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:198)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1041)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:607)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:313)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.GeneratedMethodAccessor600.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at freemarker.ext.beans.BeansWrapper.invokeMethod(BeansWrapper.java:840)
at freemarker.ext.beans.BeanModel.invokeThroughDescriptor(BeanModel.java:276)
at freemarker.ext.beans.BeanModel.get(BeanModel.java:183)
... 46 more
Caused by: java.lang.NullPointerException
