CN202162596U - Cutter bar special for chamfering and head flatting - Google Patents
Cutter bar special for chamfering and head flatting Download PDFInfo
- Publication number
- CN202162596U CN202162596U CN2011201997067U CN201120199706U CN202162596U CN 202162596 U CN202162596 U CN 202162596U CN 2011201997067 U CN2011201997067 U CN 2011201997067U CN 201120199706 U CN201120199706 U CN 201120199706U CN 202162596 U CN202162596 U CN 202162596U
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- bearing
- positioning sleeve
- chamfering
- cutter bar
- bar body
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Abstract
The utility model relates to a cutter bar special for chamfering and head flatting, which comprises a cutter bar body, and an installing hole for a handle of a receiving cutter is axially arranged at the front end of the cutter bar body; and the cutter bar is characterized in that a support is also arranged at the front end of the cutter bar body in a sleeving manner, a positioning sleeve corresponding to the installing hole is arranged on the support, and a bearing is arranged between the positioning sleeve and the support. In the cutter bar disclosed by the utility model, the support and the positioning sleeve are additionally arranged on the cutter bar body, so that when the chamfering or the head flatting is processed, a corresponding cutter extends outwards or withdraws inwards at a position from the positioning sleeve; when the cutter bar is installed on the main shaft and goes forward in a rotating manner, and when the end surface of the positioning sleeve is in contact with the surface of a tube plate, the corresponding cutter cannot cut in the tube plate or a heat exchange tube so as to ensure the chamfering depth of a tube hole of the tube plate or the extension length of the tube, and the chamfering depth of the tube hole of the whole tube plate and the extension length of the tube are consistent; meanwhile, the cutter bar has the advantages that the structure is flexible to adjust, the generality is good, the cost is low, the structure is simple, the operation is convenient and the like.
Description
Technical field
The utility model relates to a kind of knife bar, specifically refers to a kind of special holder that is used for tube sheet chamfering, pipe tack.
Background technology
All have the Welding Structure of tube-to-tube sheet connection in the equipment such as existing tubular sheet heat exchanger, condenser, before pipe (being heat exchanger tube) passes the pore of tube sheet, need carry out chamfering the pore on the tube sheet; More commonly through fluted drill, the direct chamfering of slotting cutter end grinding-shaping; Though this processing mode efficient is higher, owing to be to lean on operating personnel's range estimation to control processing capacity, therefore; The chamfering degree of depth of each pore is inconsistent, directly has influence on follow-up welding quality.Advanced processing mode is also arranged, and promptly through numerical control drilling machine processing, the chamfering degree of depth can be controlled through the control system of lathe, thereby can overcome above-mentioned defective preferably, makes the chamfering degree of depth of each pore be consistent.But in process, centering is difficulty relatively, causes the drawback that the centering time is long, processing cost is high.
After pipe passed the pore on the tube sheet, can there be uneven in length phenomenon in each pipe end face, and need carry out tack processing this moment to the pipe end face.More traditional way is that operating personnel are with the direct tack of fluted drill end grinding-shaping; Perhaps use boring cutter boring end face tack, though the former efficient is higher, owing to be the range estimation control processing capacity that depends on operating personnel, therefore, the length that heat exchanger tube stretches out behind the tube sheet still can't be consistent, and still can have influence on follow-up welding quality.Though after latter's moulding, end finish is better, operating efficiency is low, and exists the range estimation control heat exchanger tube that processing capacity brought because of operating personnel to stretch out the inconsistent defective of tubesheet strength equally.For this reason; People design special equipment; As Chinese patent Granted publication number for CN2649239Y " fluid pressure type tack band saw " and Chinese patent Granted publication number for CN201613397U " a kind of portable pipe end drag scraper is the device so all having disclosed; But these complicated integral structure only are used for the tack of pipe processing, can't carry out chamfering to the pore of tube sheet.
Number be to disclose the flat head chamfering device of steel pipe in the patent documentation of CN201669453U also, do not guarantee that the chamfering degree of depth and pipe expose the conforming technical scheme of tube sheet height but disclose just like the Chinese patent Granted publication.
The utility model content
The utility model technical problem to be solved is the defective to prior art; A kind of special holder that is used for chamfering, tack is provided; After installing process tools such as fluted drill or milling cutter on this knife bar; Can reach the consistent purpose of the chamfering degree of depth after the identical or chamfering of pipe extension elongation after the processing, and simple in structure, easy to operate.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: this special holder that is used for chamfering, tack comprises the knife bar body; Front end at this knife bar body axially has the installing hole of admitting the cutter handle of a knife; It is characterized in that: on the front end of this knife bar body, also be set with bearing; On this bearing, be equipped with and the corresponding positioning sleeve of described installing hole, and between this positioning sleeve and bearing, be provided with bearing.
Further improvement as the utility model; Can have window on the front end side wall of described positioning sleeve, utilize this window, not only help the smooth discharge of iron filings; Avoid because of the stuck cutter head of iron filings; And can be used as operator's form, be convenient to drill bit or milling cutter and aim at working position, to increase work efficiency.
In above-mentioned scenarios; Be preferably between described bearing and the said knife bar body and be threaded; Through spinning movement; Can regulate the relative position between bearing and the knife bar as required, and then can adjust the distance between the cutter head of positioning sleeve front end and cutter, so that this knife bar can satisfy the requirement of processing different product.
In order to improve degree of regulation, can axially have a plurality of locating slots on the described knife bar body, radially have the screw relative on the described bearing with said locating slot, dog screw is threaded in this screw and can extend in the described locating slot.Spacing in locating slot through the head of dog screw, bearing is positioned on the knife bar body as required, guarantee the distance between positioning sleeve front end and the cutter head.
In above-mentioned preferred version, described bearing is preferably elected the combining structure of ball bearing and plane bearing as.Make the utility model can guarantee the flexibility of knife bar action, can bear bigger axial force again.
The location and installation mode of bearing can have various ways; Preferably; The rear end of described positioning sleeve has a shoulder, and described plane bearing is resisted against this shoulder place, and on the positioning sleeve of the rear side of plane bearing, the back-up ring of pad, described ball bearing and spacing usefulness is installed successively.
Compared with prior art, because the knife bar body of the utility model has added bearing and positioning sleeve, therefore when chamfering or tack; Make corresponding cutters overhanging or be recessed in the distance that positioning sleeve one is set, begin rotation on the main shaft and advance in the process when knife bar is installed in, when the positioning sleeve end face is run into the tube sheet surface; Corresponding cutters promptly can not be cut tube sheet or heat exchanger tube again, thereby has guaranteed the pore chamfering degree of depth or the pipe extension elongation of tube sheet, and the extension elongation of the pore chamfering degree of depth of monoblock tube sheet and heat exchanger tube all will be consistent; Such structure also has change flexibly simultaneously, and versatility is good, and is simple in structure; Advantages such as cost is low, and is easy to operate.
Description of drawings
Fig. 1 is the broken section structural representation of the utility model embodiment;
Fig. 2 is the structural representation of positioning sleeve;
View when Fig. 3 carries out chamfering for the utility model embodiment installs behind the milling cutter;
View when Fig. 4 carries out heat exchanger tube tack for the utility model embodiment installs behind the fluted drill.
The specific embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
Shown in Fig. 1 to 2, this knife bar comprises knife bar body 1, and the tail end of this knife bar body is designed with the installing handle of Morse's taper; Be used for being installed to apace on the main shaft of lathe, the front end of this knife bar body axially has the installing hole 11 of admitting the cutter handle of a knife, and the handle of a knife of this installing hole and cutter all is designed to the taper hole and the taper shank of coupling each other; On the front end of this knife bar body, also be set with bearing 2; In the present embodiment, this bearing 2 is designed to movable, promptly between bearing 2 and the knife bar body 1 for being threaded; Rotary support 2 just can make the relative position between bearing 2 and the knife bar body 1 change.
On above-mentioned bearing 2, positioning sleeve 3 is installed, is provided with bearing between this positioning sleeve 3 and the bearing 2, here; The rear end of this positioning sleeve 3 has a shoulder 31, has four windows 32 on the front end side wall of this positioning sleeve successively, and each window design becomes the square hole form; Can certainly be the hole of other shape, utilize this window 32, the iron filings that both helped in the process are discharged; Can become operator's observation window again,, increase work efficiency so that drill bit or milling cutter are aimed at working position.Because heat exchanger tube has different specifications; In order to improve the utilization rate of knife bar main body (knife bar behind the removal positioning sleeve); The rear end size of positioning sleeve can be designed to identical, and corresponding adjustment can be done according to the specification of heat exchanger tube in the inside and outside footpath of front end, sees also the positioning sleeve structure among Fig. 1 and Fig. 2.
Above-mentioned bearing adopts ball bearing 4 and plane bearing 5, and plane bearing 5 is resisted against shoulder 31 places of positioning sleeve, and on the positioning sleeve of the rear side of plane bearing 5, the back-up ring 7 of pad 6, ball bearing 4 and spacing usefulness is installed successively.After the rear end of positioning sleeve installs above-mentioned bearing, compress with end cap 8 again, here; End cap 8 is threaded in the front end oral area of bearing 2; The axis of the axis of positioning sleeve 3 and installing hole 11 is consistent at this moment, makes the through hole of positioning sleeve corresponding with installing hole, and by means of plane bearing 5 and ball bearing 4; Make the utility model can guarantee the flexibility of knife bar action, can bear bigger axial force again.
In order to satisfy process requirements, axially have a plurality of locating slots 12 on the knife bar body, radially have the screw relative on the bearing 2 with this locating slot; Dog screw 9 is threaded in this screw and can extend in the locating slot 12, and it is fixed that the quantity of locating slot can be come by the required minimum adjustment amount of positioning sleeve, in present embodiment; Adopting pitch between bearing and the knife bar body is that the fine thread of 1mm is connected; Bearing whenever revolves and turns around, and positioning sleeve moves 1mm, after offering 4 locating slots on the knife bar body; Make the minimum adjustment amount of positioning sleeve shorten to 0.25mm; If in the actual process, required precision is higher, can reduce the minimum adjustment amount of positioning sleeve through the quantity that increases locating slot.
Before pore 101 chamferings on the processing tube sheet 10, in installing hole, insert the taper shank of milling cutter a in advance, as shown in Figure 3; Rotating stand 2; Relative position according to tube sheet drawing requirement adjustment milling cutter and positioning sleeve makes the cutter head of milling cutter stretch in locating bush opening portion one length L outward, after adjusting to the right place; The screwed in place screw is with hold-down support.During chamfering, the tail end of above-mentioned knife bar body is linked to each other with drill press spindle, main shaft rotate and the axial advancement process in; Bearing, positioning sleeve and knife bar body rotate and axial advancement thereupon; When the end face of positioning sleeve was run into tube sheet surperficial, the cutter head of milling cutter can not be cut tube sheet again, thereby has guaranteed the pore chamfering degree of depth of tube sheet; And adopting such knife bar, the chamfering degree of depth of all pores on the tube sheet that processes is consistent.And when the end face of positioning sleeve is run into tube sheet surperficial, because the design of bearing, knife bar is rotated neatly and can bear bigger axial force.
In like manner, before exchange heat pipe 20 tack, in installing hole, insert the taper shank of fluted drill b in advance; As shown in Figure 4, rotating stand is according to the relative position of tube sheet drawing requirement adjustment fluted drill and positioning sleeve; Make the drill bit of fluted drill be recessed in positioning sleeve oral area one length d; After adjusting to the right place, the screwed in place screw is with hold-down support.During tack, the tail end of above-mentioned knife bar body is linked to each other with drill press spindle, main shaft rotate and the axial advancement process in; Bearing, positioning sleeve and knife bar body rotate and axial advancement thereupon; When the end face of positioning sleeve was run into the tube sheet surface, the drill bit of fluted drill promptly can not be cut heat exchanger tube again, thereby has guaranteed that pipe is exposed to the length of tube sheet; And adopt such knife bar, all heat exchanger tubes on the tube sheet that processes to be exposed to the length unanimity of pore.Same when the end face of positioning sleeve is run into the tube sheet surface, owing to the design of bearing, knife bar is rotated neatly and can bear bigger axial force.
Claims (6)
1. special holder that is used for chamfering, tack; Comprise knife bar body (1); Front end at this knife bar body axially has the installing hole (11) of admitting the cutter handle of a knife; It is characterized in that: on the front end of this knife bar body, also be set with bearing (2), on this bearing, be equipped with and the corresponding positioning sleeve of described installing hole (3), and between this positioning sleeve (3) and bearing (2), be provided with bearing.
2. the special holder that is used for chamfering, tack according to claim 1 is characterized in that: have window (32) on the front end side wall of described positioning sleeve (3).
3. the special holder that is used for chamfering, tack according to claim 1 and 2 is characterized in that: between described bearing (2) and the said knife bar body (1) for being threaded.
4. the special holder that is used for chamfering, tack according to claim 3; It is characterized in that: axially have a plurality of locating slots (12) on the described knife bar body (1); Radially have the screw relative with said locating slot on the described bearing, dog screw (9) is threaded in this screw and can extend in the described locating slot (12).
5. the special holder that is used for chamfering, tack according to claim 4 is characterized in that: described bearing is ball bearing (4) and plane bearing (5).
6. the special holder that is used for chamfering, tack according to claim 5; It is characterized in that: the rear end of described positioning sleeve has a shoulder (31); Described plane bearing (5) is resisted against this shoulder (31) and locates, and on the positioning sleeve of the rear side of said plane bearing (5), the back-up ring (7) of pad (6), described ball bearing (4) and spacing usefulness is installed successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201997067U CN202162596U (en) | 2011-06-13 | 2011-06-13 | Cutter bar special for chamfering and head flatting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201997067U CN202162596U (en) | 2011-06-13 | 2011-06-13 | Cutter bar special for chamfering and head flatting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202162596U true CN202162596U (en) | 2012-03-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201997067U Expired - Lifetime CN202162596U (en) | 2011-06-13 | 2011-06-13 | Cutter bar special for chamfering and head flatting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202162596U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102764918A (en) * | 2012-07-25 | 2012-11-07 | 东阳市双燕设备有限公司 | Inner corner chamfering tool with electric hand drill and inner corner chamfering method |
| CN103143787A (en) * | 2013-03-22 | 2013-06-12 | 宁波明欣化工机械有限责任公司 | Large-sized pipe plate head flattening device |
| CN104493657A (en) * | 2014-12-09 | 2015-04-08 | 重庆迪科汽车研究有限公司 | Inner round hole chamfering device for shaft sleeve |
| CN105414620A (en) * | 2016-01-04 | 2016-03-23 | 兰州兰石重型装备股份有限公司 | Method for chamfering pipe plate |
| CN107812987A (en) * | 2016-09-14 | 2018-03-20 | 中国石油天然气股份有限公司 | Machining device for tube plates and baffle plates with different chamfer sizes |
| CN108915597A (en) * | 2018-06-30 | 2018-11-30 | 苏家乐 | It is a kind of be easily installed expanding use drill bit |
-
2011
- 2011-06-13 CN CN2011201997067U patent/CN202162596U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102764918A (en) * | 2012-07-25 | 2012-11-07 | 东阳市双燕设备有限公司 | Inner corner chamfering tool with electric hand drill and inner corner chamfering method |
| CN102764918B (en) * | 2012-07-25 | 2014-07-02 | 东阳市双燕设备有限公司 | Inner corner chamfering tool with electric hand drill and inner corner chamfering method |
| CN103143787A (en) * | 2013-03-22 | 2013-06-12 | 宁波明欣化工机械有限责任公司 | Large-sized pipe plate head flattening device |
| CN103143787B (en) * | 2013-03-22 | 2016-03-02 | 宁波明欣化工机械有限责任公司 | Large-scale tube sheet tack device |
| CN104493657A (en) * | 2014-12-09 | 2015-04-08 | 重庆迪科汽车研究有限公司 | Inner round hole chamfering device for shaft sleeve |
| CN105414620A (en) * | 2016-01-04 | 2016-03-23 | 兰州兰石重型装备股份有限公司 | Method for chamfering pipe plate |
| CN107812987A (en) * | 2016-09-14 | 2018-03-20 | 中国石油天然气股份有限公司 | Machining device for tube plates and baffle plates with different chamfer sizes |
| CN108915597A (en) * | 2018-06-30 | 2018-11-30 | 苏家乐 | It is a kind of be easily installed expanding use drill bit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120314 |
|
| CX01 | Expiry of patent term |