CN101549421A - Processing method of producing rack by thick steel plate - Google Patents
Processing method of producing rack by thick steel plate Download PDFInfo
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- CN101549421A CN101549421A CNA2009100482840A CN200910048284A CN101549421A CN 101549421 A CN101549421 A CN 101549421A CN A2009100482840 A CNA2009100482840 A CN A2009100482840A CN 200910048284 A CN200910048284 A CN 200910048284A CN 101549421 A CN101549421 A CN 101549421A
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Abstract
The invention discloses a processing method of producing rack by thick steel plate; the processing method has the characteristic that all the processing is finished on the special combined drill and mill processing machine and utilizes ring belt saw to process into teeth shape such that the whole teeth processing is cool processing for eliminating the affect of deforming of the racks caused by using teeth shape processed by oxygen cutting heat in the world, so the invention does not only achieves teeth smooth finish and ensures the rack circular pith error and improves the production efficiency. The racks processed by the method can be used for self-elevating offshore drilling platform and other large members.
Description
Technical field
The present invention relates to the tooth bar processing technology that is used to promote, more particularly, relate to a kind of processing method of steel plate being made tooth bar.
Background technology
At present, the tooth bar that is used for the usefulness of large-scale component lifting is a drive disk assembly, all adopt thermal processing method to make, the tooth bar used as marine pile legs of self-elevating drilling platform, see also Fig. 1, shown in Figure 2, after the mode that the processing method of such spud leg tooth bar is the cutting of direct employing flame cuts into tooth bar 11 shapes with steel plate, again with two webs 12 and two semicircle pipe components 13 welding fabrication mutually.Yet, owing to adopted flame directly to cut the both sides profile of tooth of making tooth bar 11, make that whole tooth Profile Machining is hot-working, the flank of tooth of tooth bar, tooth top and tooth root are heated and easily expand, and cause distortion and wayward easily, cause tooth bar circular pitch size instability, easily overproof and scrap, and its flank of tooth, tooth top and tooth root fineness do not reach requirement yet, tooth face hardness Yin Gaore and produce the annealing phenomenon particularly, have a strong impact on the tooth bar quality, greatly reduced product percent of pass.In addition, be imported product because this tooth bar 11 adopts, also there are shortcomings such as price height, delivery date be long.
In sum, the above-mentioned shortcoming of present existing lifting rack ubiquity has seriously restricted the construction of domestic drilling platforms and the process that marine oil and gas is developed.
Summary of the invention
At the above-mentioned shortcoming that exists in the prior art, the purpose of this invention is to provide and a kind of steel plate is made the processing method of tooth bar, this processing method can avoid tooth bar to deform, and improves end product quality.
For achieving the above object, the present invention adopts following technical scheme:
These concrete steps of processing method of steel plate being made tooth bar are as follows:
A. be raw material with thick high strength steel plate, cut and make the strip blank that is used for manufacturing gear strip;
B. the strip blank being positioned at the saw brill mills on the associating machining tool;
C. respectively by saw bore mill on the associating machining tool mill the pin unit head and vertical sawing machine carries out the flank of tooth cold working of profile of tooth to strip blank both sides;
D. the flank of tooth after the processing is carried out the cold working that tooth root mills pin and tooth top chamfering.
In step C, described flank of tooth cold working mode is a ring-type belt sawing processing mode, and concrete steps are as follows:
C1. adopt and mill the pin unit head at strip blank both sides processing tooth root circular hole;
C2. adopt vertical sawing machine to carry out the sawing manufacturing gear strip flank of tooth in strip blank both sides.
In step C2, described vertical sawing machine is 30 ° direction along sawing machine and vertical bar steel and carries out sawing, and is sawn to the tooth root circular hole tangently, forms the flank of tooth of tooth bar.
In steps A, described strip blank can be selected for use a steel plate directly to cut and be made.
In steps A, described strip blank can be selected two blocks of steel plates of well cutting for use, and is welded to each other together by upper and lower two connecting plates and forms.
In step B, described locate mode is specially: the lifting of strip blank is bored to saw mill on the associating machining tool, adopt mechanical profile of tooth to position, and can advance along the line slideway direction by hydraulic oil cylinder driving.
In step C, can bore the both sides Duo Tai mill associating machining tool by saw and mill pin unit head and vertical sawing machine and simultaneously the strip blank is carried out the monolateral or bilateral flank of tooth and process.
In step D, tooth root is milled the cold working of pin and tooth top chamfering, can bore the boring and milling unit head that mills on the associating machining tool by described saw and make up right-angle milling head and carry out as the worker, also can on vertical processing milling machine or numerical control gantry machining center, process.
This processing method also comprises the step that adds weldering semicircle pipe component:
Between described steps A and step B, two halves pipe member is symmetrically welded in the both sides of strip blank;
Or after described step D, with two halves pipe member be symmetrically welded in processing after the tooth bar both sides.
In technique scheme, the strip blank that is used for manufacturing gear strip is cut and made to the processing method of steel plate being made tooth bar of the present invention for being raw material with thick high strength steel plate earlier; Then the strip blank being positioned at the saw brill mills on the associating machining tool; Strip blank both sides are carried out the flank of tooth cold working of profile of tooth by milling pin unit head and vertical sawing machine respectively again; At last the flank of tooth after the processing is carried out the cold working that tooth root mills pin and tooth top chamfering.Because this processing method adopts the mode of ring-type belt sawing to carry out tooth Profile Machining, make that whole tooth Profile Machining is cold working, avoided profile of tooth to be heated and deformed, tooth bar quality and tooth bar circular pitch error have been guaranteed, not only improved the fineness of the flank of tooth, tooth top and tooth root, and improved production efficiency, reduced cost.
Description of drawings
Fig. 1 is the radial cross-section of traditional offshore drilling platform spud leg tooth bar;
Fig. 2 is the vertical view of traditional offshore drilling platform spud leg tooth bar;
Fig. 3 is a flow chart of steel plate being made the processing method of tooth bar of the present invention;
Fig. 4 adopts saw to bore to mill the structure vertical view that the associating machining tool carries out tooth Profile Machining among the present invention;
Fig. 5 is the A portion enlarged drawing among Fig. 4.
Fig. 6 a～Fig. 6 d is the rack structure schematic diagram that adopts each embodiment made of this processing method.
The specific embodiment
Further specify technical scheme of the present invention below in conjunction with drawings and Examples.
See also Fig. 3～shown in Figure 5, of the present invention steel plate is made the processing method of tooth bar, can be used for processing the tooth bar of marine pile legs of self-elevating drilling platform, and the lifting tooth bar of other large-scale component.The concrete steps of this processing method are: the first step is a raw material with thick high strength steel plate, cuts and make the strip blank (seeing 11 of Fig. 4 ') that is used for manufacturing gear strip.Wherein, the cutting mode that adopts can be common sawing machine sawing or flame cutting, and above-mentioned strip blank 11 ' can select for use the direct cutting of a thick high strength steel plate to be made, certainly can also select for use about two thick high strength steel plates of well cutting and be provided with, and weld together by upper and lower two connecting plates 12 and to form, thereby make this strip blank 11 ' reach and make the required width of tooth bar.Please in conjunction with Fig. 3～shown in Figure 5, in second step, strip blank 11 ' be positioned at saw bored mill on the processing platform of associating machining tool 1.In this step, the concrete mode of location is, earlier strip blank 11 ' lifting is bored to saw and mill on the associating machining tool 1, adopt mechanical profile of tooth to position then, and can bore the hydraulic oil cylinder driving mill on the associating machining tool 1 by saw, can make strip blank 11 ' advance along 5 directions of the line slideway on the processing platform.Above-mentioned mechanical profile of tooth locate mode is specially: make a profile of tooth template (totally 7 tooth pitches) on the lower platform of processing platform, (positional cylinder is that double end ejects and upper mounting plate connects feed cylinder (stroke is a tooth pitch) and positional cylinder, come directly towards similar profile of tooth, play the guiding role), when feed cylinder is whenever walked a tooth pitch, positional cylinder just positions once, thereby has guaranteed precision.The 3rd step, respectively by saw bore mill on the associating machining tool 1 mill pin unit head 2 and the flank of tooth cold working of profile of tooth is carried out in 3 pairs of strip blank 11 ' both sides of vertical sawing machine.Ring-type belt sawing mode is adopted in this flank of tooth cold working, concrete steps are: adopt earlier saw to bore to mill on the associating machining tool 1 the pin unit head 2 that mills of both sides to process tooth root circular hole 111 in strip blank 11 ' both sides, the effect of this tooth root circular hole 111 is saw blade 31 withdrawings that help processing after tooth root milling, tooth top chamfering and the sawing; Being located at saw in employing then bores the vertical sawing machine 3 mill associating machining tool 1 both sides and carries out the sawing manufacturing gear strip flank of tooth in strip blank 11 ' both sides.Above-mentioned ring-type belt sawing is the saw blade 31 sawing patterns of this vertical sawing machine 3, can be according to the tooth root circular hole 111 that has bored, and along should be vertical the direction (being dotted arrow direction among Fig. 5) of 30 ° of sawing machine 3 and strip blanks 11 ' be carry out the sawing propelling, up to being sawn to and the tangent back of tooth root circular hole 111 withdrawings, thereby form the tooth bar flank of tooth 112.Certainly, can adopt many above-mentioned pin unit head 2 and the vertical sawing machines 3 of milling to be symmetrically set in saw respectively and to bore the both sides of milling associating machining tool 1, thus can carry out simultaneously strip blank 11 ' monolateral or bilateral flank of tooth processing, with the raising working (machining) efficiency.What this need say be, above-mentioned saw brill mills associating machining tool 1 and mainly comprises the mechanisms such as milling unit head 2, vertical sawing machine 3 and boring pin unit head combination right angle pin head 4 that are used to locate the processing platform of strip blank and are used to process, mill associating machining tool 1 separate case application because this saw bores, its detailed structure and principle do not repeat them here.Adopt this saw to bore the advantage of milling associating machining tool 1 to be, the machining accuracy height, process that the toothed surfaces quality is good, the tooth bar circular pitch error is little, efficient is high.In the 4th step, the flank of tooth after the processing in the step 3 is carried out the cold working that tooth root mills pin and tooth top chamfering.This step can directly be bored to mill on the associating machining tool 1 at saw and be processed by boring pin unit head combination right angle pin head 4, certainly also can select for use process equipments such as vertical processing milling machine or numerical control gantry machining center to carry out, and be preferable, thereby finish the processing of this tooth bar with the former.
If the offshore drilling platform spud leg tooth bar that carries out processing, structure and processing technology according to the spud leg tooth bar, this tooth bar also needs to add weldering semicircle pipe component 13, therefore, in one embodiment of this invention, the step of welding mutually with semicircle pipe component 13 can be in flank of tooth first being processed (promptly between above-mentioned steps one and step 2), also can be after tooth Profile Machining is finished (promptly after step 4).The former is symmetrically welded two halves pipe member 13 in the both sides of cutting and the strip blank 11 ' made, bores to mill and carries out profile of tooth cold working on the associating machining tool 1 thereby be hung at saw with strip blank 11 '; And the latter mills after pin and tooth top chamfering finish at tooth root, two halves pipe member 13 directly is symmetrically welded in the tooth bar both sides get final product.See also shown in Fig. 6 a～Fig. 6 d, Fig. 6 a is depicted as the tooth bar that adopts a steel plate to make, Fig. 6 b is for adopting the tooth bar of two blocks of steel plates by connecting plate phase welding production, Fig. 6 c makes and is welded with the tooth bar of semicircle pipe component for adopting a steel plate, and Fig. 6 d makes and be welded with the tooth bar of semicircle pipe component for adopting two blocks of steel plates.
The processing method of steel plate being made tooth bar of the present invention, owing to adopted to cut earlier and made the strip blank, after carry out the cold working of profile of tooth, avoided profile of tooth to be heated and deformed, guaranteed the tooth bar quality, and the mode by the sawing of ring-type belt is carried out tooth Profile Machining, not only improved the fineness of the flank of tooth, and improved production efficiency, reduced cost, not only can be used for the spud leg tooth bar processing of marine self-elevating drilling platform, the marine drilling platform spud leg adopts helical teeth and also can be used as from now on, the exploration of double helical tooth is for the construction and the technical development of drilling platforms provides advantage.In addition, this processing method equally also is applicable to the processing of the lifting rack of other large-scale component.
Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the present invention, and be not to be used as limitation of the invention, as long as in connotation scope of the present invention, all will drop in claims scope of the present invention variation, the modification of the above embodiment.
Claims (9)
1. one kind steel plate made the processing method of tooth bar, it is characterized in that,
The concrete steps of this processing method are as follows:
A. be raw material with thick high strength steel plate, cut and make the strip blank that is used for manufacturing gear strip;
B. the strip blank being positioned at the saw brill mills on the associating machining tool;
C. respectively by saw bore mill on the associating machining tool mill the pin unit head and vertical sawing machine carries out the flank of tooth cold working of profile of tooth to strip blank both sides;
D. the flank of tooth after the processing is carried out the cold working that tooth root mills pin and tooth top chamfering.
2. as claimed in claim 1 steel plate is made the processing method of tooth bar, it is characterized in that,
In step C, described flank of tooth cold working mode is a ring-type belt sawing processing mode, and concrete steps are as follows:
C1. adopt and mill the pin unit head at strip blank both sides processing tooth root circular hole;
C2. adopt vertical sawing machine to carry out the sawing manufacturing gear strip flank of tooth in strip blank both sides.
3. as claimed in claim 2 steel plate is made the processing method of tooth bar, it is characterized in that:
In step C2, described vertical sawing machine is 30 ° direction along sawing machine and vertical bar steel and carries out sawing, and is sawn to the tooth root circular hole tangently, forms the flank of tooth of tooth bar.
4. as claimed in claim 1 steel plate is made the processing method of tooth bar, it is characterized in that:
In steps A, described strip blank can be selected for use a steel plate directly to cut and be made.
5. as claimed in claim 1 steel plate is made the processing method of tooth bar, it is characterized in that:
In steps A, described strip blank can be selected two blocks of steel plates of well cutting for use, and is welded to each other together by upper and lower two connecting plates and forms.
6. as claimed in claim 1 steel plate is made the processing method of tooth bar, it is characterized in that,
In step B, described locate mode is specially: the lifting of strip blank is bored to saw mill on the associating machining tool, adopt mechanical profile of tooth to position, and can advance along the line slideway direction by hydraulic oil cylinder driving.
7. as claimed in claim 1 steel plate is made the processing method of tooth bar, it is characterized in that:
In step C, can bore the both sides Duo Tai mill associating machining tool by saw and mill pin unit head and vertical sawing machine and simultaneously the strip blank is carried out the monolateral or bilateral flank of tooth and process.
8. as claimed in claim 1 steel plate is made the processing method of tooth bar, it is characterized in that:
In step D, tooth root is milled the cold working of pin and tooth top chamfering, can bore the boring and milling unit head that mills on the associating machining tool by described saw and make up right-angle milling head and process, also can on vertical processing milling machine or numerical control gantry machining center, process.
9. as claimed in claim 1 steel plate is made the processing method of tooth bar, it is characterized in that,
This processing method also comprises the step that adds weldering semicircle pipe component:
Between described steps A and step B, two halves pipe member is symmetrically welded in the both sides of strip blank;
Or after described step D, with two halves pipe member be symmetrically welded in processing after the tooth bar both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100482840A CN101549421A (en) | 2009-03-26 | 2009-03-26 | Processing method of producing rack by thick steel plate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100482840A CN101549421A (en) | 2009-03-26 | 2009-03-26 | Processing method of producing rack by thick steel plate |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101804547A (en) * | 2010-04-15 | 2010-08-18 | 南通振华重型装备制造有限公司 | Machining method of end-ring gear rack |
| CN103008795A (en) * | 2012-12-11 | 2013-04-03 | 浙江晨龙锯床股份有限公司 | Rack sawing, drilling and milling unit |
| CN106064258A (en) * | 2016-07-05 | 2016-11-02 | 武汉船用机械有限责任公司 | A kind of tooth bar cutting method and gear rack elevating device |
| CN106493528A (en) * | 2015-09-06 | 2017-03-15 | 上海裕顺机械厂 | A kind of processing technology of gear |
-
2009
- 2009-03-26 CN CNA2009100482840A patent/CN101549421A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101804547A (en) * | 2010-04-15 | 2010-08-18 | 南通振华重型装备制造有限公司 | Machining method of end-ring gear rack |
| CN103008795A (en) * | 2012-12-11 | 2013-04-03 | 浙江晨龙锯床股份有限公司 | Rack sawing, drilling and milling unit |
| CN106493528A (en) * | 2015-09-06 | 2017-03-15 | 上海裕顺机械厂 | A kind of processing technology of gear |
| CN106064258A (en) * | 2016-07-05 | 2016-11-02 | 武汉船用机械有限责任公司 | A kind of tooth bar cutting method and gear rack elevating device |
| CN106064258B (en) * | 2016-07-05 | 2018-04-17 | 武汉船用机械有限责任公司 | A kind of rack cutting method and gear rack elevating device |
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Open date: 20091007 |