CN212552090U - Boiler header large-pipe-diameter hole machining forming positioning device - Google Patents

Boiler header large-pipe-diameter hole machining forming positioning device Download PDF

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Publication number
CN212552090U
CN212552090U CN202021205439.5U CN202021205439U CN212552090U CN 212552090 U CN212552090 U CN 212552090U CN 202021205439 U CN202021205439 U CN 202021205439U CN 212552090 U CN212552090 U CN 212552090U
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China
Prior art keywords
cutter
cutter bar
diameter hole
positioning
hole
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Active
Application number
CN202021205439.5U
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Chinese (zh)
Inventor
张美飞
朱全元
顾峰刚
张佳
陈�全
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Nantong Wanda Boiler Co Ltd
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Nantong Wanda Boiler Co Ltd
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Priority to CN202021205439.5U priority Critical patent/CN212552090U/en
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Publication of CN212552090U publication Critical patent/CN212552090U/en
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Abstract

The utility model discloses a big pipe diameter hole machine-shaping positioner of boiler collection case, including the cutter arbor body, the one end of the cutter arbor body is the taper shank, the other end of the cutter arbor body is fixed with the cutter arbor head, be provided with the bearing in the cutter arbor head, the hole of bearing is provided with the location dabber, the location dabber with the coaxial setting of cutter arbor body, the overhead sword strip that is provided with of cutter arbor. The device can realize the one-time processing and forming of the large-diameter hole of the boiler header.

Description

Boiler header large-pipe-diameter hole machining forming positioning device
Technical Field
The utility model relates to a boiler pipe processingequipment especially relates to a big pipe diameter hole processingequipment of boiler collection case.
Background
The existing processing technology for the large-diameter hole of the boiler header comprises the following steps: two cutter bars are arranged on two sides of a cutter bar, one end of the cutter bar is connected with a radial drill drilling machine with Morse 5 taper, a cutter bar hole is formed in the cutter bar head at the other end of the cutter bar, and a high-speed steel cutter bar is arranged in the cutter bar hole. In the scraping process, two cutters work simultaneously, after the highest point of the large aperture (saddle opening) connected with the header is scraped through, the cutter edge is easily broken by large impact, in order to avoid the cutter breaking, flame is adopted to cut off the central plate, the large aperture hole wall is manually polished, and the scraping processing process of the large aperture hole of the header is completed.
This method of processing has the following disadvantages:
1. in the drilling process, the two cutter heads do rotary cutting movement, the central plate is unevenly cut, partial materials are connected with the header, and the machining efficiency is influenced by intermittent cutting.
2. The impact force of the cutting edge is large, the cutting has vibration and instability, the cutter head is easy to break, and the processing cost is increased.
3. In the later stage, in order to avoid the cutter breakage, the central plate is usually subjected to gas cutting, the cutting edge is rough and uneven, the processing quality is influenced, and manual polishing is needed.
4. The method has the advantages of multiple process procedures, three procedures of scraping, gas cutting and polishing, multiple processing procedures and low production efficiency.
5. The large-diameter hole wall has low processing precision, brings hidden danger to product processing, and can not meet the product requirements.
6. The slag cutting and the central plate fall into the collecting box, which brings trouble to the cleaning.
Disclosure of Invention
The utility model aims to solve the technical problem that overcome the big pipe diameter hole course of working of smear metal uneven in the current boiler collection case, easily break the tool bit, cut edge defects such as coarse, inefficiency, precision hang down, provide a new big pipe diameter hole processingequipment of boiler collection case.
In order to solve the technical problem, the utility model discloses a big pipe diameter hole machine-shaping positioner of boiler collection case, including the cutter arbor body, the one end of the cutter arbor body is the taper shank, the other end of the cutter arbor body is fixed with the cutter arbor head, be provided with the bearing in the cutter arbor head, the hole of bearing is provided with the location dabber, the location dabber with the coaxial setting of the cutter arbor body, be provided with the sword strip on the cutter arbor head.
According to the further optimization of the technical scheme, the cutter bar head is provided with the cutter bar hole, the cutter bar is arranged in the cutter bar hole, and the cutter bar is pressed and positioned through the bolt.
According to the further optimization of the technical scheme, the knife strip and the center of the positioning mandrel form an acute angle.
According to the further optimization of the technical scheme, the chip containing cavity is arranged on the other side of the cutter bar head.
According to the further optimization of the technical scheme, the cutter bars are provided with six cutter bars which are uniformly distributed on the end face of the outer side of the cutter bar head.
According to the further optimization of the technical scheme, the taper shank is Morse No. 5.
The utility model discloses a big pipe diameter hole machine-shaping positioner of boiler collection case has following advantage for current double knives scraping positioner: (1) the step-by-step machining procedure of the prior header large-pipe-diameter hole is improved into a one-step machining forming process, so that the drilling machining efficiency and the stability of the machining quality are greatly improved, and the cost reduction and the efficiency improvement are obvious. (2) The cutter head is provided with a cutter hole installation position, a certain deflection angle is formed between the cutter head and the central line, the tangent line of the cutter operation is consistent with the outer diameter of the installation hole, and the cutter sharpening of the cutting angle of the cutter strip is effectively reduced. (3) The scraping processing stability is improved. The inner wall of the open hole is smooth, and the appearance quality problem caused by gas cutting is avoided. (4) And the hole is drilled to the end without secondary reprocessing, so that the processing time is shortened, and the working efficiency is improved. (5) The integral rigidity of the cutter body is increased, and the cutter is not easy to break. (6) The variety is many, and specific devices are implemented, and nearly more than ten varieties such as phi 107, phi 109, phi 113, phi 117, phi 122.3, phi 135, phi 146.3 and the like are related at present. (7) Can be according to collection case large aperture specification, supporting corresponding tool bar head, location dabber, the commonality is strong, satisfies many specifications collection case large aperture drilling requirement, is applicable to all kinds of collection case large aperture scrapes in the boiler. (8) The selected end is contacted with the blank with large aperture, so that the positioning is accurate, the abrasion is small, the gradual positioning in the drilling process can be realized, and the production efficiency is high. (9) The cutter has high repeated utilization rate, can be repeatedly polished for many times under the condition of meeting the clamping condition, and has strong universality.
Drawings
Fig. 1 is the utility model discloses boiler header big pipe diameter hole machine-shaping positioner look at the schematic diagram.
Fig. 2 is the utility model discloses boiler header big pipe diameter hole machine-shaping positioner looks sideways at the schematic structure.
Detailed Description
As shown in figure 1, the large-diameter hole machining, forming and positioning device for the boiler header comprises a cutter bar body 1, wherein one end of the cutter bar body is a taper shank 11, and the taper shank 11 adopts Morse No. 5. The cutter arbor body 1 and the drilling taper sleeve with corresponding taper are matched and clamped on a common radial drilling machine for use.
The other end welding of cutter arbor body has cutter arbor head 2, and cutter arbor head 2 adopts cylindrical structure or multiaspect column structure. According to the specification of the large-diameter hole of the header, cutter head heads (2) with different specifications are designed to meet the processing requirements.
The inside bearing 3 that is provided with of cutter arbor head 2, the hole of bearing is provided with positioning core axle 4, the axiality is ensured to positioning core axle 4 and cutter arbor body 1. The positioning mandrel 4 and the large-aperture drilling bottom hole of the header have no relative movement, and play a positioning role.
The outer side of the bearing 3, namely the processing side of the pipe body, is provided with a chip containing cavity 21. The chip containing cavity 21 can contain not only the central plate material which is not cut off, but also partial cut chip materials.
Six tool bar holes are uniformly formed in the end face of the outer side of the tool bar head 2, namely the machining side of the pipe body, tool bars 5 are arranged in the tool bar holes, and the tool bars 5 are pressed and positioned through bolts 6. The bolt 6 is arranged perpendicular to the blade bar. The blade 5 forms an angle α with the center of the positioning mandrel, see fig. 2, preferably an angle α of 5 to 10 degrees. The specification and the size of the chip containing cavity are set according to the specification of the large-diameter hole of the header, and the position setting of the knife strip (5) can be ensured to be matched with the specification of the large-diameter hole of the header.
The utility model discloses big pipe diameter hole machine-shaping positioner of boiler header and make the shaping technology thereof, its preparation processing step is:
a. grinding of a taper shank at one end in the cutter arbor body 1 and processing of the positioning mandrel 4: after the bar material of the selected material is subjected to coarse grinding, semi-fine grinding and fine grinding, the surface of the cutter bar body 1 with the taper shank 11 matched with the taper sleeve is processed to the Morse 5 taper requirement, and the surface is polished smoothly. The bar material of the selected material is processed into the positioning mandrel 4 after coarse grinding, semi-fine grinding and fine grinding.
b. Finish machining of the inner hole and the cutter bar hole of the cutter bar head 2: after the bar material of the selected material is subjected to rough machining, semi-finish machining and finish machining, a central hole, a bearing mounting hole, a chip containing cavity 21 and the like are machined in the cutter bar head 2; a cutter bar mounting hole is processed on the end surface of the cutter bar head 2, when the cutter bar hole is processed, a certain deflection angle alpha is formed between the cutter bar mounting hole and a central line, the tangent line of the cutter operation is consistent with the outer diameter of the mounting hole, and the cutter sharpening of the cutting angle of the cutter bar 5 is effectively reduced; a screw hole for installing a cutter bar 5 is processed along the circumferential surface of the cutter bar head 2; wherein the cutter head 2 is welded with the cutter body 1 after being assembled.
c. Grinding and cutting the cutter bar 5: after the high-speed steel cutter bar 5 is ground to a specified size, a reasonable angle and a groove shape are formed on the surface of the high-speed steel cutter bar by linear cutting or polishing, and the position of the cutter bar 5 is fixed by a bolt 6.
d. And installing a positioning device, scraping the large-diameter pipe hole of the header, and processing, forming and inspecting the diameter of the large-diameter pipe hole.

Claims (6)

1. Big pipe diameter hole machine-shaping positioner of boiler collection case, including the cutter arbor body, the one end of cutter arbor body is taper shank, its characterized in that: the cutter bar is characterized in that a cutter bar head is fixed to the other end of the cutter bar body, a bearing is arranged in the cutter bar head, a positioning mandrel is arranged in an inner hole of the bearing, the positioning mandrel and the cutter bar body are coaxially arranged, and a cutter bar is arranged on the cutter bar head.
2. The large-diameter hole forming and positioning device for the boiler header as recited in claim 1, wherein: the cutter bar head is provided with a cutter bar hole, the cutter bar is arranged in the cutter bar hole, and the cutter bar is pressed and positioned through a bolt.
3. The boiler header large-diameter hole machining forming and positioning device as claimed in claim 1 or 2, wherein: the knife strip and the center of the positioning mandrel form an acute angle.
4. The large-diameter hole forming and positioning device for the boiler header as claimed in claim 3, wherein: a scrap containing cavity is arranged on the other side of the cutter bar head.
5. The boiler header large-diameter hole machining forming and positioning device as claimed in claim 4, wherein: the cutter bar is provided with six cutter bars which are uniformly distributed on the end surface of the outer side of the cutter bar head.
6. The boiler header large-diameter hole machining forming and positioning device as claimed in claim 5, wherein: the taper shank is Morse number 5.
CN202021205439.5U 2020-06-26 2020-06-26 Boiler header large-pipe-diameter hole machining forming positioning device Active CN212552090U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202021205439.5U CN212552090U (en) 2020-06-26 2020-06-26 Boiler header large-pipe-diameter hole machining forming positioning device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202021205439.5U CN212552090U (en) 2020-06-26 2020-06-26 Boiler header large-pipe-diameter hole machining forming positioning device

Publications (1)

Publication Number Publication Date
CN212552090U true CN212552090U (en) 2021-02-19

Family

ID=74611926

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202021205439.5U Active CN212552090U (en) 2020-06-26 2020-06-26 Boiler header large-pipe-diameter hole machining forming positioning device

Country Status (1)

Country Link
CN (1) CN212552090U (en)

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