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CN-121973022-A - Machine tool correction device and correction method for machining diesel engine rack guide plate

CN121973022ACN 121973022 ACN121973022 ACN 121973022ACN-121973022-A

Abstract

The invention belongs to the technical field of marine diesel engine manufacturing, and discloses a machine tool correction device and a machine tool correction method for machining a diesel engine rack guide plate. The machine tool correction device for machining the diesel engine rack guide plate comprises a modular assembly structure, is convenient and fast to assemble and compact in matching, an adjustable design of a power accessory provides an adjusting basis for deformation compensation of a large suspension depth of the machine tool accessory, and matching of a measuring assembly and a reference tool setting block provides data support for accurate correction. The machine tool correction method for machining the diesel engine frame guide plate realizes closed-loop control of measurement, adjustment and verification, the design of allowance trial cutting effectively reduces the rejection rate of finish machining, the reliability of guide plate machining precision is ensured by a circulating detection correction mode, the operation flow is clear, the operation is easy to grasp, and the machining correction efficiency is greatly improved.

Inventors

  • DENG JIMING
  • GUO QI
  • ZHONG JIAJIA
  • WU GUANGYU

Assignees

  • 上海中船三井造船柴油机有限公司

Dates

Publication Date
20260505
Application Date
20260325

Claims (10)

  1. 1. The utility model provides a diesel engine frame lathe correcting unit for baffle processing which characterized in that includes: The power accessory (1) is provided with a correction and adjustment position in the middle of the power accessory (1), and the position of the part of the power accessory (1) below the correction and adjustment position is adjustable along the horizontal direction and the vertical direction; -an adjustment assembly (2), the adjustment assembly (2) being arranged in a correct adjustment position of the power accessory (1), the adjustment assembly (2) being configured to adjust the position of a portion of the power accessory (1) below the correct adjustment position; A measurement assembly (3), the measurement assembly (3) comprising a magnet holder, a universal bar and a dial indicator, the measurement assembly (3) being configured to level a machining tool and to measure a diesel engine frame guide machining accuracy; and the reference tool setting block (4) is arranged on the table top of the machine tool in a matching way.
  2. 2. The machine tool correction device for machining the diesel engine rack guide plate according to claim 1, wherein the adjusting assembly (2) comprises a fastening bolt (21) and copper plugs, the fastening bolt (21) is arranged at four corners of the part of the power accessory (1) below the correction adjustment position, the part of the power accessory (1) below the correction adjustment position is connected with the part of the power accessory (1) above the correction adjustment position through the fastening bolt (21), the fastening bolt (21) is loosened, and the part of the power accessory (1) below the correction adjustment position can be loosened up and down, and forms a gap matched with the copper plugs.
  3. 3. The machine tool correction device for machining a diesel engine frame guide plate according to claim 2, characterized in that the adjustment assembly (2) further comprises a pressing plate (22) and an adjustment bolt (23), the pressing plate (22) is connected to one side of the power attachment (1) in the horizontal direction through the adjustment bolt (23), and the pressing plate (22) and the adjustment bolt (23) are used for adjusting the position of the power attachment (1) in the horizontal direction at a portion below the adjustment position.
  4. 4. A machine tool correction device for machining a diesel engine frame guide plate according to claim 3, wherein the magnetic base can be selectively adsorbed on the surface of the reference tool setting block (4) or the surface of the power accessory (1), and the universal rod can adjust the measuring position of the dial indicator in a multi-directional manner.
  5. 5. The machine tool correction device for machining the diesel engine rack guide plate according to claim 4, wherein the power accessory (1) is adaptively installed on a spindle of a Long Xi machine tool, a spindle position of the power accessory is used for assembling a machining tool, the reference tool setting block (4) is adaptively fixed on a table top of a milling machine tool, and an installation plane of the reference tool setting block (4) is parallel to a machining reference plane of the machine tool.
  6. 6. A method for correcting a machine tool for machining a diesel engine frame guide, characterized in that a machining tool is corrected by using the machine tool correction device for machining a diesel engine frame guide according to claim 5, the machine tool correction method for machining a diesel engine frame guide comprising the steps of: s1, fixedly arranging the reference tool setting block (4) on a machine tool table surface, and mounting and adsorbing the measuring assembly (3) above the reference tool setting block (4); s2, installing the blades of the machining tool on a mandrel of the power accessory (1) after primary leveling, and retesting the tool tips of the blades of the machining tool through the measuring assembly (3) and leveling again; S3, finishing leveling operation of the front end face of the machining tool; s4, performing allowance trial cutting on the machining surface of the frame guide plate; s5, the measuring assembly (3) is taken down from the reference tool setting block (4) and is adsorbed on the power accessory (1), and the pull gauge measures the up-down, front-back, left-right position accuracy data of the machining surface of the frame guide plate; S6, correcting the power accessory (1) in the horizontal direction and the vertical direction according to the measurement data in the step S5; and S7, after correction is completed, performing trial cutting on the machining surface of the frame guide plate again, judging whether the drawing marking precision requirement is met according to trial cutting results, if so, completing the machining, and if not, repeating the steps S5 to S7.
  7. 7. The method for correcting the machine tool for machining the diesel engine rack guide plate according to claim 6, wherein the specific operation of retesting and leveling the tool tips of the blades of the machining tool in the step S2 comprises the steps of setting zero at the point A of the cutter head of the machining tool, moving the dial indicator to the point C for detection after rotating the cutter head by 180 degrees, setting zero at the point B of the machining tool, moving the dial indicator to the point D for detection after rotating the machining tool by 180 degrees, and adjusting the power accessory (1) according to detection data of A, C, B, D four points.
  8. 8. The correction method for the machine tool for machining the diesel engine rack guide plate according to claim 6, wherein the specific operation of leveling the front end face of the machining tool in the step S3 is characterized in that the measuring assembly (3) is kept to be adsorbed above the reference tool setting block (4), the universal rod is adjusted to enable the dial indicator measuring head to be vertically attached to an effective detection area of the front end face of the machining tool and prepressed, a machine tool spindle is started to drive the cutter head to idle at a low speed, the runout of the front end face of the machining tool is detected and recorded through the dial indicator, if the runout exceeds the drawing precision requirement, spindle rotation is stopped, the power accessory (1) is adjusted according to the deviation direction, the cutter head is rotated at a low speed again, the runout is measured through the dial indicator again, and the runout is measured until the runout of the front end face of the machining tool meets the drawing precision requirement.
  9. 9. The method for correcting the machine tool for machining the diesel engine rack guide plate according to claim 6, wherein the adjustment and correction mode of the power accessory (1) in the step S6 comprises the steps of loosening the fastening bolts (21) at four corners of the power accessory (1), selecting copper plugs with corresponding thickness according to measurement data to plug into gaps formed by the parts of the power accessory (1) located below and the parts of the power accessory (1) located above the adjustment positions, and correcting the power accessory (1) along the vertical direction, and adjusting the adjusting bolts (23) and the pressing plate (22) to correct the power accessory (1) along the horizontal direction.
  10. 10. The method according to claim 6, wherein in step S7, if the defect that the upper and lower sides of the guide plates are not parallel is detected after trial cutting, the YZ linkage compensation parameter is added to the machine tool processing program in combination with the measured precision data, and the trial cutting is performed again.

Description

Machine tool correction device and correction method for machining diesel engine rack guide plate Technical Field The invention relates to the technical field of marine diesel engine manufacturing, in particular to a machine tool correction device and a machine tool correction method for machining a diesel engine rack guide plate. Background The diesel engine frame guide plate is a key fixed part of the marine low-speed diesel engine, and mainly aims to provide guidance for the crosshead slide block, bear the side thrust of the piston, ensure that the piston moves linearly in the cylinder, and the guide plate is arranged on the diesel engine frame and forms a kinematic pair with the crosshead slide block. The requirements on machining quality of the guide plate surface of the diesel engine frame are higher, when the guide plate is machined, the machine tool accessory is required to enter the inner cavity of the frame in a large suspension depth mode, rigid deformation can be generated in the cutting process due to the fact that the machine tool accessory is longer in suspension depth, and a cutter-back phenomenon exists, so that the dimensional tolerance, straightness and flatness of the guide plate surface are difficult to control, the precision requirements of drawing marking cannot be met, meanwhile, the traditional machining correction mode is complex in operation and low in measurement precision, and the machining quality and production efficiency of products are seriously affected. Therefore, it is needed to provide a machine tool correction device and a correction method for machining a diesel engine frame guide plate, so as to solve the problems. Disclosure of Invention The invention aims to provide a machine tool correction device and a machine tool correction method for machining a diesel engine frame guide plate, which are used for solving the technical problem that the precision requirement of drawing marking cannot be met when the traditional machine tool is used for machining the diesel engine frame guide plate. To achieve the purpose, the invention adopts the following technical scheme: in a first aspect, the present invention provides a machine tool correction device for machining a diesel engine frame guide plate, comprising: The power accessory is provided with a correction and adjustment position in the middle, and the position of the part of the power accessory below the correction and adjustment position is adjustable along the horizontal direction and the vertical direction; An adjustment assembly disposed at a corrective adjustment location of the power accessory, the adjustment assembly configured to adjust a position of a portion of the power accessory below the corrective adjustment location; A measurement assembly including a magnetic mount, a universal bar, and a dial indicator, the measurement assembly configured to level a machining tool and measure a diesel engine frame guide machining accuracy; and the reference tool setting block is arranged on the table top of the machine tool in an adapting way. Optionally, the adjustment subassembly includes fastening bolt and copper stopper piece, the power annex is located the part four corners department of correction adjustment position below is provided with fastening bolt, the power annex is located the part of correction adjustment position below is passed through fastening bolt with the power annex is located the part connection of correction adjustment position top loosens fastening bolt, the power annex is located the part of correction adjustment position below can be become flexible from top to bottom, it with the power annex is located the part of correction adjustment position top forms the adaptation copper stopper piece is plugged into the gap. Optionally, the adjusting assembly further comprises a pressing plate and an adjusting bolt, wherein the pressing plate is connected to one side of the power accessory in the horizontal direction through the adjusting bolt, and the pressing plate and the adjusting bolt are used for adjusting the position of the power accessory in the horizontal direction, which is located below the correcting and adjusting position. Optionally, the magnetic base can be selectively adsorbed on the surface of the reference tool setting block or the surface of the power accessory, and the universal rod can adjust the measuring position of the dial indicator in a multi-way mode. Optionally, the power accessory is adaptively installed on a spindle of the Long Xi machine tool, the spindle position of the power accessory is used for assembling a machining tool, the reference tool setting block is adaptively fixed on a table top of the milling machine tool, and the installation plane of the reference tool setting block is parallel to the machining reference plane of the machine tool. In a second aspect, the present invention provides a method for correcting a machine tool for machining a diesel engine frame