datalist:10数据库“tempdb”的事务日志已满，原因为“ACTIVE_TRANSACTION”。   在 System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction)
   在 System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose)
   在 System.Data.SqlClient.TdsParser.TryRun(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj, Boolean& dataReady)
   在 System.Data.SqlClient.SqlDataReader.TryConsumeMetaData()
   在 System.Data.SqlClient.SqlDataReader.get_MetaData()
   在 System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString, Boolean isInternal, Boolean forDescribeParameterEncryption, Boolean shouldCacheForAlwaysEncrypted)
   在 System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async, Int32 timeout, Task& task, Boolean asyncWrite, Boolean inRetry, SqlDataReader ds, Boolean describeParameterEncryptionRequest)
   在 System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, TaskCompletionSource`1 completion, Int32 timeout, Task& task, Boolean& usedCache, Boolean asyncWrite, Boolean inRetry)
   在 System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method)
   在 System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior, String method)
   在 System.Data.SqlClient.SqlCommand.ExecuteReader()
   在 B2b.Shop.ShopBase.GetDataList(Int32 iValue, Int32 iSize, List`1& loValues) 位置 f:\mywork\b2b168\b2bweb\B2bBase\ShopBase.cs:行号 4543datalist:8数据库“tempdb”的事务日志已满，原因为“ACTIVE_TRANSACTION”。   在 System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction)
   在 System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose)
   在 System.Data.SqlClient.TdsParser.TryRun(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj, Boolean& dataReady)
   在 System.Data.SqlClient.SqlDataReader.TryConsumeMetaData()
   在 System.Data.SqlClient.SqlDataReader.get_MetaData()
   在 System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString, Boolean isInternal, Boolean forDescribeParameterEncryption, Boolean shouldCacheForAlwaysEncrypted)
   在 System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async, Int32 timeout, Task& task, Boolean asyncWrite, Boolean inRetry, SqlDataReader ds, Boolean describeParameterEncryptionRequest)
   在 System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, TaskCompletionSource`1 completion, Int32 timeout, Task& task, Boolean& usedCache, Boolean asyncWrite, Boolean inRetry)
   在 System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method)
   在 System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior, String method)
   在 System.Data.SqlClient.SqlCommand.ExecuteReader()
   在 B2b.Shop.ShopBase.GetDataList(Int32 iValue, Int32 iSize, List`1& loValues) 位置 f:\mywork\b2b168\b2bweb\B2bBase\ShopBase.cs:行号 4543datalist:2数据库“tempdb”的事务日志已满，原因为“ACTIVE_TRANSACTION”。   在 System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction)
   在 System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose)
   在 System.Data.SqlClient.TdsParser.TryRun(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj, Boolean& dataReady)
   在 System.Data.SqlClient.SqlDataReader.TryConsumeMetaData()
   在 System.Data.SqlClient.SqlDataReader.get_MetaData()
   在 System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString, Boolean isInternal, Boolean forDescribeParameterEncryption, Boolean shouldCacheForAlwaysEncrypted)
   在 System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async, Int32 timeout, Task& task, Boolean asyncWrite, Boolean inRetry, SqlDataReader ds, Boolean describeParameterEncryptionRequest)
   在 System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, TaskCompletionSource`1 completion, Int32 timeout, Task& task, Boolean& usedCache, Boolean asyncWrite, Boolean inRetry)
   在 System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method)
   在 System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior, String method)
   在 System.Data.SqlClient.SqlCommand.ExecuteReader()
   在 B2b.Shop.ShopBase.GetDataList(Int32 iValue, Int32 iSize, List`1& loValues) 位置 f:\mywork\b2b168\b2bweb\B2bBase\ShopBase.cs:行号 4543datalist:2数据库“tempdb”的事务日志已满，原因为“ACTIVE_TRANSACTION”。   在 System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction)
   在 System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose)
   在 System.Data.SqlClient.TdsParser.TryRun(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj, Boolean& dataReady)
   在 System.Data.SqlClient.SqlDataReader.TryConsumeMetaData()
   在 System.Data.SqlClient.SqlDataReader.get_MetaData()
   在 System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString, Boolean isInternal, Boolean forDescribeParameterEncryption, Boolean shouldCacheForAlwaysEncrypted)
   在 System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async, Int32 timeout, Task& task, Boolean asyncWrite, Boolean inRetry, SqlDataReader ds, Boolean describeParameterEncryptionRequest)
   在 System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, TaskCompletionSource`1 completion, Int32 timeout, Task& task, Boolean& usedCache, Boolean asyncWrite, Boolean inRetry)
   在 System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method)
   在 System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior, String method)
   在 System.Data.SqlClient.SqlCommand.ExecuteReader()
   在 B2b.Shop.ShopBase.GetDataList(Int32 iValue, Int32 iSize, List`1& loValues) 位置 f:\mywork\b2b168\b2bweb\B2bBase\ShopBase.cs:行号 4543<!DOCTYPE html>
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<p><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">螺纹车削装刀对刀中存在的问题</span></span></p><p><span style=";font-family:宋体;font-size:14px"><span style="font-family:Calibri">1)</span><span style="font-family:宋体">**次车削夹刀具</span></span></p><p><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">**次夹紧螺纹刀时，螺纹刀尖与工件旋转中心不同，焊接刀一般较为常见。由于制造粗糙，刀杆尺寸不准确，中心高度需要调整垫片，中心高度影响刀具切割后的实际几何角度。安装刀具时，刀尖角偏差，容易产生螺纹齿角误差和齿形倾斜。如果螺纹刀伸出时间过长，会产生振动刀，影响螺纹表面的粗糙度。</span></span></p><p><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">二、粗精车刀对刀</span></span></p><p><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">在加工高精度螺纹和梯形螺纹的过程中，需要两把螺纹刀粗精车分开，两把刀偏移大</span><span style="font-family:Calibri">(</span><span style="font-family:宋体">尤其是</span><span style="font-family:Calibri">Z</span><span style="font-family:宋体">向</span><span style="font-family:Calibri">)</span><span style="font-family:宋体">会使螺纹中径变大报废。</span></span></p><p><span style=";font-family:宋体;font-size:14px"><span style="font-family:Calibri">3)</span><span style="font-family:宋体">修理工件对刀</span></span></p><p><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">由于工件的二次夹紧，修复后的螺旋线和编码器的转动信号发生了变化，再次修复加工时会产生随机扣。</span></span></p><p><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">解决问题的方法</span></span></p><p><span style=";font-family:宋体;font-size:14px"><span style="font-family:Calibri">1</span><span style="font-family:宋体">）螺纹刀的刀尖必须与工件旋转中心保持相同的高度。磨刀后，用刀样板靠在工件轴上，保持刀尖角安装正确。如果使用数控机夹刀具，由于刀杆制造精度高，一般只需将刀杆靠近刀架侧面即可。</span></span></p><p><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体"><img src="//l.b2b168.com/2022/07/19/09/202207190902566129844.jpg"/></span></span></p><p><span style=";font-family:宋体;font-size:14px"><span style="font-family:Calibri">2)</span><span style="font-family:宋体">粗精加工螺纹刀对刀采用设定某一点作为基准点，可采用普通方法对刀，在实际对刀过程中只需稍加调整刀补即可。</span></span></p><p><span style=";font-family:宋体;font-size:14px"><span style="font-family:Calibri">3)</span><span style="font-family:宋体">在螺纹加工过程中，如果刀具磨损或坍塌，刀具需要重新磨削，工件没有拆卸和修复，只需将螺纹刀的安装位置与拆卸前的位置重叠，相当于同一刀具加工。</span></span></p><p><span style=";font-family:宋体;font-size:14px"><span style="font-family:Calibri">4)</span><span style="font-family:宋体">如果已拆卸的工件已修复，则只有在确定加工起点位置后才能进行修复加工。如何确定加工起点和一转信号位置，表面深度可用试验棒为</span><span style="font-family:Calibri">0.05</span><span style="font-family:宋体">～</span><span style="font-family:Calibri">0.1mm</span><span style="font-family:宋体">螺纹切割</span><span style="font-family:Calibri">(</span><span style="font-family:宋体">所有参数与加工螺纹参数相同</span><span style="font-family:Calibri">)</span><span style="font-family:宋体">，</span><span style="font-family:Calibri">Z</span><span style="font-family:宋体">值为从螺纹起点右端表面整数螺纹导程的距离值，表面刻有螺旋线，确定螺纹切割起点，并在卡盘圆表面的相应位置标记（即使在螺旋起点和试验棒上的同一轴向剖面内）。</span></span></p><p><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">目的是记录信号位置，卸下试验棒，夹紧要切割或修复的螺纹工件，将刀转移到加工位置，然后将刀转移到卡盘切割部分，转动卡盘，使切割线对准刀主切割刀，然后主轴不转动，将刀尖移动到任何完整的螺纹槽，记录相应的</span><span style="font-family:Calibri">Z</span><span style="font-family:宋体">方向**坐标，最后计算</span><span style="font-family:Calibri">Z</span><span style="font-family:宋体">方向定位起点坐标，根据计算结果修改程序中的起点</span><span style="font-family:Calibri">Z</span><span style="font-family:宋体">方向坐标。该公式是</span><span style="font-family:Calibri">z</span><span style="font-family:宋体">′</span><span style="font-family:Calibri">=z+</span><span style="font-family:宋体">（</span><span style="font-family:Calibri">n+2</span><span style="font-family:宋体">）</span><span style="font-family:Calibri">t</span><span style="font-family:宋体">，</span><span style="font-family:Calibri">n</span><span style="font-family:宋体">从当前刀具所在的螺纹槽到螺纹起点的螺纹槽数量，</span><span style="font-family:Calibri">t</span><span style="font-family:宋体">为螺距。</span></span></p><p><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">例</span><span style="font-family:Calibri">:</span><span style="font-family:宋体">当前</span><span style="font-family:Calibri">z</span><span style="font-family:宋体">值为</span><span style="font-family:Calibri">-10</span><span style="font-family:宋体">，</span><span style="font-family:Calibri">n</span><span style="font-family:宋体">为</span><span style="font-family:Calibri">2</span><span style="font-family:宋体">，</span><span style="font-family:Calibri">t</span><span style="font-family:宋体">为</span><span style="font-family:Calibri">3</span><span style="font-family:宋体">，则</span></span></p><p><span style=";font-family:宋体;font-size:14px"><span style="font-family:Calibri">z</span><span style="font-family:宋体">′</span><span style="font-family:Calibri">=z+</span><span style="font-family:宋体">（</span><span style="font-family:Calibri">n+2</span><span style="font-family:宋体">）</span><span style="font-family:Calibri">t=2</span></span></p><p><span style=";font-family:宋体;font-size:14px"><span style="font-family:Calibri">Z</span><span style="font-family:宋体">向</span><span style="font-family:Calibri">2</span><span style="font-family:宋体">的新加工起点。</span></span></p><p><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">在切割螺纹的过程中，安装刀具和刀具非常重要，特别是二次切割（修复）螺纹，在现有螺纹槽的基础上，关键是确保主轴零信号位置与工件上现有螺纹螺旋线的起点一致。</span></span></p><p><br/></p><br /><a href="http://szzctsb.b2b168.com/">http://szzctsb.b2b168.com</a>

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