CN-122008049-A - Slender tube contour polishing device

Abstract

The invention discloses an elongated tube profile polishing device which comprises a supporting component, a pressing component and a profile polishing head. On the one hand, the invention sequentially polishes the slender tube by the two contour polishing heads based on the position switching of the lower pressing wheel, effectively eliminates the polishing dead angle, ensures that the contour polishing molding can be realized by once clamping of the slender tube, has simple operation and high polishing efficiency, and on the other hand, the invention ensures that the positioning restriction can be synchronously formed on the axial direction of the slender tube during polishing by the upper and lower dislocation layout of the supporting wheels and the lower pressing wheel under the stable rotation of the slender tube, effectively reduces the axial deflection generated by the contour polishing of the slender tube, realizes the full-coverage polishing, ensures the position precision of the slender tube after the contour polishing, and is convenient for the follow-up accurate polishing of the end surface and the inner hole of the slender tube, thereby improving the omnibearing burr removal rate of 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 profile polishing device for the elongated tube is characterized by comprising a supporting component, a pressing component and profile polishing heads, wherein the supporting component comprises a plurality of supporting wheel groups which are distributed at intervals along the length direction of the elongated tube, each supporting wheel group comprises two supporting wheels with the axis parallel to the axis of the elongated tube, the two supporting wheels are arranged side by side and roll to support the elongated tube, the pressing component comprises a plurality of pressing wheels which are in one-to-one correspondence with the supporting wheel groups and can be pressed above the supporting wheel groups in a movable switching mode, the supporting wheels and the pressing wheels are arranged in a staggered mode up and down, the elongated tube is driven to rotate around the center line of the supporting wheels in a rotating mode through the cooperation of the supporting wheels and the pressing wheels, a section to be polished and a positioning section are formed on the elongated tube in a switching mode based on the position of the pressing wheels, the profile polishing heads are two in a rotating mode opposite to the rotating mode, the two profile polishing heads form polishing strokes which extend from two ends of the elongated tube to the middle portion of the elongated tube and coincide with the middle portion of the elongated tube, the two profile polishing heads form polishing strokes which are smaller than the length of the section to be polished, the two profile polishing heads are limited in the end portions, and the other profile polishing heads are sequentially polished along the polishing heads.
2. 2. An elongated tube profile grinding apparatus as claimed in claim 1, wherein when a restriction is made to a locating section end, the corresponding profile grinding head contacts the circumference of the locating section end and creates an axial restriction using friction between the roughened surface and the elongated tube.
3. 3. An elongated tube profile grinding apparatus as claimed in claim 1, wherein upon limiting the end of a locating section, the corresponding profile grinding head contacts the end face of the locating section to form an axial limit.
4. 4. The elongated tube profile grinding apparatus of claim 1, wherein the elongated tube is aligned with a center of the overlapping portion of the segment to be ground, a support center formed by the plurality of support wheel sets, and a center of the elongated tube based on the position of the pinch roller.
5. 5. The elongated tube profile grinding apparatus of claim 1, wherein the elongated tube has a length L and the length of the section to be ground is L1, wherein 0.5 l≤l1≤0.6L.
6. 6. The elongated tube profile grinding apparatus of claim 1, wherein there are two of said support wheel sets and two of said lower pinch rollers, respectively, and wherein in orthographic projection on a horizontal plane, two of said lower pinch rollers are located between two of said support wheel sets.
7. 7. The elongated tube profile grinding apparatus of claim 1 or 6, wherein said pressing down assembly further comprises a plurality of power members in one-to-one correspondence with each of said pressing down wheels, each of said power members comprising a traversing seat that traverses horizontally reciprocally, a lifting seat movably connected up and down to said traversing seat, said pressing down wheels being mounted on corresponding ones of said lifting seats and cooperating to press down or disengage the elongated tube based on horizontal traversing and lifting movements.
8. 8. The elongated tube profile grinding apparatus of claim 7, wherein said traversing seat reciprocates in a traversing motion perpendicular to the length of the elongated tube.
9. 9. An elongated tube profile grinding apparatus as defined in claim 1, wherein any of said support wheel sets further comprises a drive member coupled to a corresponding one of said support wheels, wherein said drive member drives said support wheels in rotation about its own centerline, each support wheel and corresponding lower pinch wheel co-rotating in rotation driving the elongated tube based on the lower pinch wheel depressing the elongated tube.
10. 10. An elongated tube profile grinding apparatus as claimed in claim 9, wherein a synchronizing shaft is employed between adjacent said support wheelsets for synchronizing the drive.

Description

Slender tube contour polishing device The application relates to a divisional application of an omnibearing polisher applicable to an elongated tube, wherein the application date is 2025, 11, 24 and 202511727684X. Technical Field The invention belongs to the field of grinding machines, and particularly relates to a grinding device for an outline of an elongated tube. Background Existing pipeline products, such as oil delivery pipes for conveying lubricating oil to automobile gearboxes, require surface burrs to be cleaned during processing, otherwise, once the burrs enter the gearboxes, the service life and quality of the gearboxes can be seriously affected. At present, conventional pipeline product polishing equipment generally adopts a group of supporting wheels and a group of lower pressing wheels to circumferentially position a pipeline product, then adopts a polishing head, and polishes the contour surface, the end surface or the inner hole of the pipeline product based on the rotation of the polishing head and the axial movement of the polishing head along the pipeline product. However, in the actual process, the prior art has the following drawbacks: 1. When the contour surface of the pipeline product is polished, because the pinch roller is limited to have polishing dead angles, after the part of the contour surface is polished, the pipeline product is required to be taken down and clamped for the second time (the direction of the product is required to be manually adjusted), and the residual contour surface of the pipeline product can be polished, so that the one-time polishing molding cannot be realized, the operation is complex, and the efficiency is low; 2. Along with the axial movement of the polishing head for polishing the contour surface of a product, due to the fact that the axial direction of the product lacks limitation, the product is easy to bear force in the axial direction to generate the same-direction offset, so that polishing references are changed, polishing precision is difficult to meet requirements, the whole contour surface cannot be covered by the polishing stroke formed by the polishing head, the follow-up polishing process is directly affected, and accordingly burrs are difficult to be guaranteed to be removed comprehensively, and the yield of the product is affected. Disclosure of Invention The object of the present invention is to overcome the deficiencies of the prior art and to provide an improved elongated tube profile grinding apparatus. In order to achieve the above purpose, the invention adopts the following technical scheme: The profile polishing device for the elongated tube comprises a supporting component, a pressing component and profile polishing heads, wherein the supporting component comprises a plurality of supporting wheel groups which are distributed at intervals along the length direction of the elongated tube, each supporting wheel group comprises two supporting wheels with the axis parallel to the axis of the elongated tube, the two supporting wheels are arranged side by side and roll to support the elongated tube, the pressing component comprises a plurality of pressing wheels which are in one-to-one correspondence with the supporting wheel groups and can be movably switched to press down above the supporting wheel groups, the supporting wheels and the pressing wheels are arranged in a staggered mode up and down, the elongated tube is driven to rotate around the axis of the supporting wheels in a rotating mode through cooperation of the supporting wheels and the pressing wheels, a section to be polished and a positioning section are formed on the elongated tube through switching of the positions of the supporting wheels and the pressing wheels, the profile polishing heads are two and turn opposite to the turning direction of the elongated tube, the two profile polishing heads form polishing strokes which extend from two ends of the elongated tube to the middle and coincide in the middle of the elongated tube, the two profile polishing heads form a polishing stroke which is smaller than the length of the section to be polished, the two profile polishing heads are limited by the positioning section, and the end of the positioning section to be successively formed by the profile polishing heads, and the other profile polishing head is sequentially polished along the polishing stroke. According to one specific and preferred aspect of the invention, when the end of the positioning segment is constrained, the corresponding profile sanding head contacts the circumference of the end of the positioning segment and creates an axial constraint using friction between the roughened surface and the elongated tube. Therefore, the polishing can be carried out by the other profile polishing head in the forward direction or the reverse direction of the slender pipe axial direction, so that the moving path of the polishing head is simplified, and the efficiency is improv