CN2721290Y - Forming disk hobbing by round grinding method for high-durability screw pump - Google Patents
Forming disk hobbing by round grinding method for high-durability screw pump Download PDFInfo
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- CN2721290Y CN2721290Y CN 200420016743 CN200420016743U CN2721290Y CN 2721290 Y CN2721290 Y CN 2721290Y CN 200420016743 CN200420016743 CN 200420016743 CN 200420016743 U CN200420016743 U CN 200420016743U CN 2721290 Y CN2721290 Y CN 2721290Y
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- blade
- milling cutter
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- tooth
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Abstract
The utility model relates to a forming disk hobbing by round grinding method for high-durability screw pump, which adopts a blade assembly type structure. The hobbing body is fastened with a plurality of blades through wedge plates. The improved point is that the forming lines of the blade tooth back of each blade are fixed as the circular arc, and the radius of the circle of the tooth back of the blade is larger than the radius of the cutter of the disk hobbing. The utility model is easy to manufacture without the expensive supporting facilities. Compared with a relief grinding milling cutter and a profiling grinding milling cutter, the cost of the disk hobbing is reduced, and the manufacturing cycle is shortened largely. The utility model is applied to the screw rod mechanism, such as the processing and the manufacture of a three screw rod pump, a screw rod compressor, etc.
Description
Technical field
The utility model relates to a kind of disc milling cutter, specifically a kind of high durability screw pump circle mill method shaping dish milling cutter that is used for the processing of screw spiral face.
Background technology
Screw rod is the heart of screw rod mechanism, and the required precision of its helicoid profile is very tight, must process with high accuracy shaping dish milling cutter.Because the structure and the shape of the shaping dish cutting plate for milling cutters back of tooth are all more special, thereby have retrained its manufacturing process and equipment, have also just determined the processing cost and the production cycle of screw rod.
At present, the disc milling cutter that is used for processing the screw rod of screw pump and helical-lobe compressor has two kinds of structures: a kind of is overall structure; Another kind is the blade modular construction, promptly is fastened with some blades by key on cutter hub.The latter is owing to make relatively easily, and cost decreases and widely uses.The blade of assembly type disc milling cutter, a kind of is to adopt the relief grinding method to be processed into, and is called for short by " relief grinding milling cutter "; Another kind is to adopt the profiling mill to be processed into, and is called for short by " profiling milling cutter ".
It is involute or spiral of Archimedes etc. that the cutter tooth antiform of relief grinding milling cutter becomes line, thereby must use relieving lathe processing, and needs auxiliary equipment such as profile grinder.The relief grinding milling cutter is with the front of wanting reconditioning sword tooth after blunt, and this diminishes with regard to the tool diameter that causes disc milling cutter, but the cutting a shape and can not change of its original tool face.As everyone knows, during the processing helicoid, section shape of the desired original tool face of cutter of different-diameter is also different.The relief grinding cutter since behind the sharpening diameter reduce and the face of original cutter to cut shape constant, as long as thereby the amount of refacing is seldom arranged, will exceed the margin of tolerance that desired original tool face is cut shape under this diameter, thus service life low be the fatal shortcoming of relief grinding milling cutter.
The cutter tooth back of the body of profiling milling cutter is a very little land shape, must use special contour grinder, relies on the model copying.Used model error requirements is less than half of milling cutter error, and profiling milling cutter is with still need reface the cutter tooth back after blunt under special equipment.Thereby the cost of use height of profiling milling cutter, inconvenience is as the commodity cutter.
The shape and structure of above-mentioned two kinds of cutter back of tooth all needs the auxiliary ligand complete equipment of a series of costlinesses adding man-hour, thereby the processing cost height, and the production cycle is long.
The utility model content
The purpose of this utility model just provides a kind of high durability screw pump circle mill method shaping dish milling cutter, to reduce the processing and manufacturing cost of disc milling cutter, improves service life.
The utility model is achieved in that shaping dish milling cutter adopts the blade modular construction, promptly on cutter hub, be fastened with some blades by key, institute's improvements are that the cutter tooth antiform with each blade becomes line to be set at circular arc line, and the back of tooth radius of circle of blade is greater than the tool radius of dish milling cutter.
Change the cutter tooth antiform shape of blade in the dish milling cutter into circular arc, then its cutter tooth back of the body is processed with regard to available cylindrical grinder, becomes round mill method shaping dish milling cutter, so just makes the easy to manufacture of disc milling cutter, and need not expensive auxiliary ligand complete equipment.Blade utilizes the technology anchor clamps after having ground profile on the cylindrical grinder, is installed and can uses on cutter hub.Because the structure of common round knife milling tool back of tooth circle is that radius of circle equates with tool radius, when diameter reduced behind its sharpening, the face of original cutter cut shape and also remains unchanged, thereby had the defective same with the relief grinding milling cutter.Therefore, the back of tooth of blade circle structure is chosen to be the tool radius of back of tooth radius of circle greater than the dish milling cutter in the utility model.Like this, the original tool face of made blade is cut the form height degree and just is and clocklike reduces trend, and the rule that reduces that desired original tool face is cut the form height degree when diminishing with the milling cutter diameter of processing helicoid is a basically identical.When this just makes this circle mill method shaping dish milling cutter diameter diminishes behind sharpening, desired original tool face was cut the shape basically identical when its original tool face was cut shape and milling cutter diameter and diminished, thereby can be not overproof when the amount of refacing of blade is very big yet, improved the durability of shaping dish milling cutter thus, made it that very long bulk life time be arranged when the processing helicoid.
The utility model is easy to manufacture, need not expensive auxiliary facility, and cost all reduces much than relief grinding milling cutter and profiling milling cutter, and the manufacturing cycle shortens greatly.The utility model is applicable to screw rod mechanism, as the processing and the manufacturing of products such as three screw pump, helical-lobe compressor.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is A profile figure outside cutter tooth of blade among Fig. 1.
Fig. 3 is the structural representation that blade circle mill method of the present utility model is processed used technology anchor clamps.
Fig. 4 is that the utility model blade back of tooth structure forms schematic diagram.
The specific embodiment
As shown in Figure 1, this circle mill method shaping dish milling cutter adopts the blade modular construction, and eight blades 1 are fastened on the cutter hub 3 by key 2 respectively.The cutter tooth of blade 1 cuts shape as shown in Figure 2, and it is circular arc line that the cutter tooth antiform of each blade 1 becomes line, and the back of tooth radius of circle of blade generally is chosen to be the 5-25% of the back of tooth radius of circle of blade 1 greater than tool radius greater than the tool radius of dish milling cutter.Select this folder footpath value, can make original tool face after the blade reconditioning cut shape and cut in the tolerance range scope of shape in the desired original tool face of same diameter.If less than 5%, then the original tool face of blade is cut the decrease deficiency of form height degree, and original tool face is cut shape will cut shape greater than desired original tool face under this diameter; If greater than 25%, then the result is opposite.In a word, surpass this span, circle mill method shaping dish milling cutter does not all reach the effect of high durability.With three screw pump mobile jib milling cutter is example, and when back of tooth radius of circle during greater than tool radius 11%, the life-span of the utility model milling cutter is four times of conventional milling cutter.
The assembling of blade 1 usefulness assembly tool, each locating surface has guaranteed its form and position tolerance on cutter hub.The shaping dish milling cutter of modular construction can be saved a large amount of precious materials, and cutter hub can be reused, but blade base centralized production, thereby its comprehensive benefit improves a lot.
In technology anchor clamps shown in Figure 3, cutter blank 4 is fastened on the clamp body 6 by taper pin 5, relies on mandrel to drive, and goes up processing blade back of tooth profile at grinder (or the numerically controlled lathe of profile grinder, band bistrique etc.).Can process 18 simultaneously at every turn.
Form among the figure in blade back of tooth structure shown in Figure 4, the anterior angle of this circle mill method shaping dish milling cutter is γ, and tool radius is Rd.Place the technology anchor clamps to justify mill by shown position on blade.Behind the circle mill, the back of tooth of blade is a circular arc line.The radius of technology anchor clamps is Rj, just coils the blade back of tooth radius of a circle of milling cutter.Require: back of tooth radius of circle Rj＞tool radius Rd.
Claims (2)
1, a kind of high durability screw pump circle mill method shaping dish milling cutter, upward be fastened with some blades (1) at cutter hub (3) by key (2), it is circular arc line that the cutter tooth antiform that it is characterized in that each blade (1) becomes line, and this back of tooth radius of a circle is greater than the tool radius of dish milling cutter.
2, high durability screw pump circle mill method shaping dish milling cutter according to claim 1, the back of tooth radius of circle that it is characterized in that blade (1) is greater than tool radius 5-25%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420016743 CN2721290Y (en) | 2004-09-07 | 2004-09-07 | Forming disk hobbing by round grinding method for high-durability screw pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420016743 CN2721290Y (en) | 2004-09-07 | 2004-09-07 | Forming disk hobbing by round grinding method for high-durability screw pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2721290Y true CN2721290Y (en) | 2005-08-31 |
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ID=35011667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420016743 Expired - Fee Related CN2721290Y (en) | 2004-09-07 | 2004-09-07 | Forming disk hobbing by round grinding method for high-durability screw pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2721290Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104475838A (en) * | 2014-12-11 | 2015-04-01 | 无锡大龙马数控机床制造有限责任公司 | Circular shaft end surface boring and milling device |
-
2004
- 2004-09-07 CN CN 200420016743 patent/CN2721290Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104475838A (en) * | 2014-12-11 | 2015-04-01 | 无锡大龙马数控机床制造有限责任公司 | Circular shaft end surface boring and milling device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |