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CN-122007989-A - Contour polishing process suitable for slender tube

CN122007989ACN 122007989 ACN122007989 ACN 122007989ACN-122007989-A

Abstract

The invention discloses a contour polishing process suitable for an elongated tube, which comprises the steps of firstly, erecting the elongated tube in a free rolling way on a rolling support area formed by a plurality of rolling support wheel sets; and secondly, the left and right polishing strokes extending from the end part to the middle part are respectively formed based on the switching cooperation of the polishing heads at the left and right ends of the slender tube and the pressing point positions formed by the pressing wheel groups. The invention forms the grinding stroke covering the whole slender tube based on the position switching of the pressing wheel, keeps the slender tube in an axial dynamic balance mode under the one-time rotation positioning of the slender tube, realizes the step-by-step grinding of the profile surface firstly left and right and then synchronously grinding, not only realizes dead angle-free grinding of the profile surface of the slender tube, but also keeps the axis reference consistent to implement high-quality grinding without axial movement and radial runout, and on the other hand, not only forms the axial dynamic balance assistance based on the transverse moving speed difference of the left grinding head and the right grinding head, but also keeps the left grinding head and the right grinding head synchronously separated from the slender tube.

Inventors

  • ZHU YONGMING
  • FU YU

Assignees

  • 适新科技（苏州）有限公司

Dates

Publication Date
20260512
Application Date
20251124

Claims (10)

  1. 1. The contour polishing process suitable for the slender tube is characterized by comprising the following steps of: Firstly, erecting an elongated tube in a free rolling manner on a rolling supporting area formed by a plurality of rolling supporting wheel sets, aligning the rolling supporting areas to form a bearing area, aligning the center of the bearing area with the center of the elongated tube, and forming a pressing wheel set capable of being switched relatively on two opposite sides of the reference by taking the center of the bearing area as the reference, wherein the pressing wheel set can roll and press the elongated tube; And secondly, switching cooperation of pressing points formed by a grinding head and a pressing wheel group at the left end and the right end of the slender tube respectively forms left and right grinding strokes extending from the end part to the middle part, the left and right grinding strokes are overlapped or aligned and jointed at the middle part of the slender tube, meanwhile, the rotating direction of the grinding head is opposite to that of the slender tube, when the left grinding stroke is used for grinding, the left grinding head moves to the middle part of the slender tube, the right grinding head contacts with the right end of the slender tube to form axial dynamic balance auxiliary force with opposite directions, so that the slender tube is axially non-shifted, then the left grinding head moves leftwards to the left end of the slender tube and the rest end pauses the grinding, meanwhile, the pressing point of the pressing wheel group is switched to implement right grinding stroke, the right grinding head moves to the middle part of the slender tube and moves rightwards for grinding, at the moment, the left grinding head forms balance force with opposite directions is formed by the opposite directions, so that the axial non-shifting structure of the slender tube is axially dynamic balance auxiliary, the transverse moving speed of the left grinding head is smaller than that the right grinding head is transversely moved, and the left grinding head and right grinding head synchronously breaks away from the slender tube after the left grinding is synchronously completed in opposite directions.
  2. 2. The profile grinding process for elongated tubes of claim 1, wherein the axial dynamic balance assist creates counter-directed balance forces based on grinding contact or counter-movement.
  3. 3. The profile grinding process for elongated tubes of claim 1, wherein the two grinding heads rotate at equal rotational speeds and in the same direction.
  4. 4. A profile grinding process for elongate tubes as claimed in claim 1, wherein each rolling support wheel set employed comprises two support wheels having parallel axes and being relatively spaced apart.
  5. 5. The profile grinding process for elongated tubes as set forth in claim 4, wherein one of the two support wheels is a driving wheel and the other support wheel and the lower pinch wheel of the lower pinch wheel set are driven wheels.
  6. 6. The profile grinding process for elongated tubes of claim 5, wherein the plurality of drive wheels are coaxial.
  7. 7. The profile grinding process for an elongated tube according to claim 4, 5 or 6, wherein there are two rolling support wheel sets, wherein the distance between the two rolling support wheel sets is 1/3-1/2 of the length of the elongated tube.
  8. 8. The profile grinding process for an elongated tube according to claim 7, wherein the lower press wheel set comprises a frame base, a left wheel base and a right wheel base respectively mounted on the frame base in an up-down motion, and a left lower press wheel and a right lower press wheel correspondingly mounted on the left wheel base and the right wheel base, wherein the motion based on the left wheel base and the right wheel base is switched such that one of the left lower press wheel and the right lower press wheel is pressed down on the elongated tube.
  9. 9. The profile grinding process for elongated tubes of claim 8, wherein the lower left pinch roller and the lower right pinch roller are positioned between the two rolling support wheel sets in an offset manner, and wherein in an axial projection of the elongated tube, both support wheels of one of the lower left pinch roller and the lower right pinch roller and the rolling support wheel sets are tangential to the elongated tube, and wherein the centers of the pinch rollers and the support wheels are in an equilateral triangle configuration, wherein the centers of the equilateral triangles coincide with the center of the elongated tube.
  10. 10. The profile grinding process for elongated tubes as recited in claim 9, wherein the frame base comprises a bottom frame, a displacement frame, wherein the displacement frame is mounted on the bottom frame in a manner that the displacement frame is laterally movable along a direction parallel to the axis of the pinch roller, and the left wheel base and the right wheel base are mounted on the displacement frame in a manner that the left wheel base and the right wheel base are slidably movable along the vertical direction, respectively.

Description

Contour polishing process suitable for slender tube The application relates to a divisional application with the application date of 2025, 11, 24, the application number of 2025117276835 and the name of omnibearing polishing technology for the contour, the end face and the inner hole of an elongated tube. Technical Field The invention belongs to the field of polishing, and particularly relates to a contour polishing process suitable for an elongated tube. Background At present, if the conventional slender tube polishing needs to be subjected to omnibearing polishing, for example, contour surface polishing, end surface polishing and inner hole polishing, wherein the contour surface polishing cannot be positioned from two ends due to the characteristics of a field tube, a support is integrally positioned, a positioning part can form a limit, then the contour surface polishing is divided into two steps, the first step is to close one end to a positioning point to finish half polishing, the second step is to change the slender tube, and the positioning position acts on a polished tube wall, and then the other end is to close the positioning point to polish the other half, so that the following technical defects exist: 1) In the profile surface polishing process, not only is two positioning needed, but also the points of the two positioning cannot be the same, namely, the references formed by the two steps of polishing cannot be consistent, so that the polishing precision cannot meet the requirement, the rejection rate is extremely high, the whole operation process is very complicated, and the profile surface polishing efficiency is extremely low; 2) The polishing head and the central line of the slender pipe are not coincident at this moment, so that the comprehensive polishing of the inner surface cannot be realized, and the probability of local transitional grinding is high, so that the final grinding quality is directly influenced. Disclosure of Invention The invention aims to overcome the defects in the prior art and provides an improved profile polishing process suitable for an elongated tube. In order to achieve the above purpose, the invention adopts the following technical scheme: A profile grinding process for an elongated tube comprising the steps of: Firstly, erecting an elongated tube in a free rolling manner on a rolling supporting area formed by a plurality of rolling supporting wheel sets, aligning the rolling supporting areas to form a bearing area, aligning the center of the bearing area with the center of the elongated tube, and forming a pressing wheel set capable of being switched relatively on two opposite sides of the reference by taking the center of the bearing area as the reference, wherein the pressing wheel set can roll and press the elongated tube; And secondly, switching cooperation of pressing points formed by a grinding head and a pressing wheel group at the left end and the right end of the slender tube respectively forms left and right grinding strokes extending from the end part to the middle part, the left and right grinding strokes are overlapped or aligned and jointed at the middle part of the slender tube, meanwhile, the rotating direction of the grinding head is opposite to that of the slender tube, when the left grinding stroke is used for grinding, the left grinding head moves to the middle part of the slender tube, the right grinding head contacts with the right end of the slender tube to form axial dynamic balance auxiliary force with opposite directions, so that the slender tube is axially non-shifted, then the left grinding head moves leftwards to the left end of the slender tube and the rest end pauses the grinding, meanwhile, the pressing point of the pressing wheel group is switched to implement right grinding stroke, the right grinding head moves to the middle part of the slender tube and moves rightwards for grinding, at the moment, the left grinding head forms balance force with opposite directions is formed by the opposite directions, so that the axial non-shifting structure of the slender tube is axially dynamic balance auxiliary, the transverse moving speed of the left grinding head is smaller than that the right grinding head is transversely moved, and the left grinding head and right grinding head synchronously breaks away from the slender tube after the left grinding is synchronously completed in opposite directions. Preferably, the axial dynamic balance assist creates counter-directed balance forces based on grinding contact or counter-movement. According to a specific and preferred aspect of the invention, the two sanding heads are rotated at equal rotational speeds and in the same direction. According to a further specific and preferred aspect of the invention, each rolling support wheel set used comprises two support wheels with parallel axes and relatively spaced apart. Based on the rolling support formed by the double supporting wheels, the rotation