CN86205863U - Grinding unit for concave tooth-profile of cylindrical worm - Google Patents
Grinding unit for concave tooth-profile of cylindrical worm Download PDFInfo
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- CN86205863U CN86205863U CN 86205863 CN86205863U CN86205863U CN 86205863 U CN86205863 U CN 86205863U CN 86205863 CN86205863 CN 86205863 CN 86205863 U CN86205863 U CN 86205863U CN 86205863 U CN86205863 U CN 86205863U
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- balladeur train
- pivoted arm
- diamond pen
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- wheel
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Abstract
The utility model relates to the structural design of a novel technological equipment for grinding concave tooth-profile of a cylindrical worm. The position of a diamond pen which is used for dressing a grinding wheel is adjusted freely in a flat coordinate system, so the grinding wheel which grinds the cylindrical worm is dressed exactly in order to wrap and grind various concave tooth-profiles of cylindrical worms. The utility model has the advantages of peculiar structure, convenient adjustment, high precision and universal usages as the technological equipment can grind various concave tooth-profiles of cylindrical worms.
Description
The utility model is a kind of structural design of technological equipment.It relates to the grinding attachment with anchor ring emery wheel envelope grinding cylindrical worm with concave tooth surface groove face.This grinding attachment, be installed on the horizontal hobbing machine (or relieving lathe, thread chasing machine, worm grinder and other can realize on the lathe of lead of screw motion) according to certain geometrical relationship, just can go out the cylindrical worm with concave tooth surface groove face of various types with the emery wheel envelope by the requirement of worm screw design parameter.
The cylindrical worm with concave tooth surface transmission is compared with common Archimedes's cylindrical worm gearing transmission, has the efficient height, and bearing capacity is big, the long remarkable advantage that waits of life-span.As far back as sixties end, China just begins to make cylindrical worm with concave tooth surface.The axial truncatus of this worm screw was designed to circular arc at that time.According to the envelope method principle, axial truncatus is the worm screw of circular arc, must use axial cross section could to come out by envelope as the emery wheel of non-circular curve.Because the emery wheel of non-circular curve is difficult to finishing, thereby this worm screw groove face just is difficult to process with envelope method.So far, still adopting axial truncatus is the emery wheel of circular arc; According to worm shaft to tooth block, with the worm screw groove face reconditioning processing method of coming out gradually.This method makes profile accuracy and production efficiency all be subjected to certain influence.In recent years, domestic also had on common worm grinder, the model of lathe wheel dresser is done in the arc-shaped, utilize lathe with trimming device emery wheel is accomplished after the circular arc worm screw is carried out the envelope grinding.But this method, model manufacturing and installation accuracy are difficult for guaranteeing; The model that the worm screw of different parameters need make different size increases cost; Owing to can only just can not eliminate the adverse effect of technological factor error according to model shape trimming wheel by the fine setting trimming device to initial contact zone.
The purpose of this utility model is that design a kind ofly can be adjusted the structure of repairing abrasive wheel grinding wheel arc diamond pen centre of gyration position arbitrarily in plane coordinate system.Utilize this structure, just can be according to given cylindrical worm with concave tooth surface pattern and tooth profile parameter (emery wheel work circle pressure angle α
WWith abrasive wheel grinding wheel arc radius ρ
W), in the given scope of technological equipment project organization, emery wheel is met the accurate finishing of worm screw design principle, thus the worm screw that the envelope grinding goes out to meet design requirement.Because diamond pen is repaiied the centre of gyration of abrasive wheel grinding wheel arc, can adjust to any position on demand in plane coordinate system, therefore project organization of the present utility model has characteristic of accurate easy to adjust.It can the grinding various types cylindrical worm with concave tooth surface, so this device has versatility.
In order to illustrate the adjustment calculated examples of project organization of the present utility model and grinding attachment dresser, this explanation provides following accompanying drawing:
Fig. 1 is the schematic diagram of grinding I type cylindrical worm with concave tooth surface.
Fig. 2 is a grinding attachment crushing schematic diagram.
Fig. 3 is a grinding attachment key structure sketch used on the relieving lathe.
Fig. 4 is a used grinding attachment structure example on the horizontal hobbing machine.
By Fig. 1 the Principle of Grinding and Cutting of I type cylindrical worm with concave tooth surface is narrated below.Cylindrical worm with concave tooth surface (1) is to come out with anchor ring emery wheel (2) the envelope grinding of rotation.Add man-hour, the mutual alignment that emery wheel (2) and worm screw (1) are installed, must make worm axis and emery wheel axis is two different surface beelines, and its alternate angle in the space equals the lead angle λ on the pitch circle of worm post, and the shortest distance lines of two axial lines should be on the plane at emery wheel work circle Dw place.Emery wheel is participated in the profile of grinding, is one section radius ρ on its axial cross section
WWith work circle pressure angle α
WKnown circular arc.When revolving wheel is pressed among Fig. 1 the position along the axis direction of rotary worm, when mobile, grinding goes out the groove face of worm screw to the emery wheel surface of revolution with regard to envelope in the helical pitch of helicoid.According to this principle, grind worm screw groove face, except that needs can satisfy the lathe of above-mentioned relative motion, also must exactly emery wheel be pressed given design parameter (emery wheel work circle pressure angle α w emery wheel work circular diameter D
W, abrasive wheel grinding wheel arc radius ρ w, emery wheel tooth head height hf) and accomplish specific shape.After the emery wheel blunt is redressed, must keep the abrasive wheel grinding wheel arc radius, emery wheel work circle pressure angle and emery wheel tooth head height are constant.Project organization of the present utility model can satisfy above-mentioned requirements fully.
Fig. 2 is the crushing schematic diagram.Selected plane coordinate system XoY in Fig. 2, the axis of its medium plain emery wheel (2) is the X coordinate, and emery wheel work circular diameter is the Y coordinate, and the intersection point O of X and Y is the origin of coordinates.In Fig. 2, to repair abrasive wheel grinding wheel arc diamond pen (14) and be fixed on the pivoted arm (11), the centre of gyration of pivoted arm is positioned on the axle (8), and its position in the XOY coordinate system can be by given tooth profile parameter (abrasive wheel grinding wheel arc radius ρ
W, the pressure angle α w on the emery wheel work circle) calculate.
Pivoted arm centre of gyration coordinate
X＝ρw·Cosαw
Y＝Dw／2－ρw·Sinαw
Dw in the formula---emery wheel work circular diameter
According to the coordinate figure that following formula calculates, can correctly adjust the position of repairing the abrasive wheel grinding wheel arc diamond pen centre of gyration (8).Transfer the X coordinate time, turn screw mandrel (4) and drive balladeur train seat (6) and on support body (5), move along X-direction through nut (3).Transfer the Y coordinate time, turn leading screw (10) and drive big balladeur train (7) and move in balladeur train seat (6) upper edge Y direction through nut (9).The finely divided scale reading can be passed through in the position of the centre of gyration in the XOY coordinate system of axle (8).The most advanced and sophisticated distance (being abrasive wheel grinding wheel arc radius ρ w) to the centre of gyration (8) of diamond pen (14) can axially be adjusted along diamond pen.The difference of emery wheel exradius Ru and emery wheel working circle radius Rw, by among Fig. 2 as can be seen, its value must equal the height of teeth root hf of worm screw.Only in this way, participate in the emery wheel working face of grinding, can both come out the whole envelopes of worm screw groove face, can not make again in the emery wheel incision root circle of worm.For this reason, a diamond pen (13) of repairing the emery wheel cylindrical must be arranged also, to guarantee Ru-Rw=hf.The tip of diamond pen (13) and the coordinate difference (ρ wSin α w+hf) of axle (8) centre of gyration on Y-axis can be by little balladeur train (12) moving on big balladeur train (7), and it is constant that it is remained.When emery wheel need be repaired, can be with Fig. 2 axis (8) center along (Y) the mobile Δ value of direction (promptly radially) along emery wheel, use diamond pen (13) and (14) cylindrical and the arc surface of trimming wheel respectively then, emery wheel after finishing, its exradius reduces the Δ value, working circle radius also reduces the Δ value, thereby the also corresponding Δ value that reduces of the distance between emery wheel axis and worm axis.Theory analysis and production practices prove: grinding wheel diameter is limited to be reduced, and is very small to the influence of worm screw profile of tooth.
Fig. 3 is the key structure sketch of grinding attachment on the relieving lathe.(2) are emery wheel among the figure, and (1) is worm screw.Grinding wheel spindle is clamped in the hole of emery wheel seat (15).Emery wheel seat (15) is made of one with support body (5), is fixed on the bearing (17) with hollow bolt (16), and can be around hollow bolt (16) rotation, groove (18) is adjusted and the alternate angle of worm shaft so that press.Bearing (17) is fixed by bolts on the small tool (19), insert chaining pin (20) in the hollow bolt (16), and be benchmark, on demand the axial location of size adjusting grinding wheel spindle with the needle point, make the chaining pin needle point aim at the plane of emery wheel work circle, to shorten the time of trimming wheel as far as possible.The center height of grinding wheel spindle is adjusted with set screw (21).Repair the X coordinate figure of the centre of gyration (8) of abrasive wheel grinding wheel arc diamond pen (14), adjust by means of balladeur train seat (6) the moving on support body (5) that is inclined to certain angle with horizontal plane, and by rule (22) reading.Repair the Y coordinate figure of the centre of gyration (8) of abrasive wheel grinding wheel arc diamond pen (14),, press rule (23) reading by mobile adjustment of big balladeur train (7) on balladeur train seat (6).Repair emery wheel cylindrical diamond pen and be clamped on the revoliving arm (24), the position of diamond pen is adjusted with mobile little balladeur train (12), and presses rule (25) reading.Cavetto arc Buddha's warrior attendant nib is adjusted by mobile roll adjustment chuck (26) to the distance of pivoted arm (11) centre of gyration (8), and by rule (27) reading on it.
Fig. 4 is a grinding attachment used on the horizontal hobbing machine.Here press the device of Fig. 4, crushing when being given in grinding I type cylindrical worm with concave tooth surface and grinding attachment are adjusted calculated examples:
1. worm screw parameter:
1.1 centre-to-centre spacing a=360 1.2 number of threads Z=1
1.3 axial module m
a=14.5 1.4 worm screw height of teeth root hf=17.4
1.5 pitch diameter of worm d
m=127
1.6 pitch cylinder angle of climb λ=6 ° 30 ' 48 "
1.7 hand of spiral dextrorotation 1.8 abrasive wheel grinding wheel arc radius ρ w=80
1.9 w=24 ° of emery wheel work circle pressure angle α
The initial outside diameter Du=350 of 110 emery wheels
2. adjust and calculate:
21 grinding wheel spindles and worm shaft alternate angle (rule w)
W=λ=6 ° 30 ' 48 " (right side)
22 grinding wheel spindles and worm shaft initial center are apart from (rule Au)
Au＝1／2（dm＋Du－2hf）＝221.10mm
The 23 cavetto arc Buddha's warrior attendant nib radius of gyration (rule R)
R＝ρw＝80mm
24 little balladeur train rule V
V＝ρw·Sinaw＋hf＝49.94mm
25 big balladeur train initial values (rule D)
D＝Du／2－V＝125.06mm
26 abrasive wheel grinding wheel arc center of curvature horizontal coordinates (rule A)
A＝ρw·cosαw＝73.08mm
27 repair emery wheel cylindrical diamond pen clamping limb length (rule L)
L＝
＝254.145mm
K-project organization constant (K=236) in the formula
It is foundation that above-mentioned adjustment is calculated with the emery wheel initial diameter, when needing behind the abrasion of grinding wheel to repair when sharp, can reduce the value that big balladeur train reduces rule D gradually, makes the relative emery wheel of diamond pen do feeding.After the big balladeur train decline Δ value, the fixedly geometrical relationship of emery wheel and worm screw during for the assurance grinding worm, centre-to-centre spacing Au also should reduce identical numerical value, and this can be guaranteed from the precise reading of rule.
Claims (5)
1, cylindrical worm with concave tooth surface groove face grinding attachment is made up of bistrique and dresser.Feature of the present utility model is to have a support body [5] it and emery wheel seat [15] to be fixed together on the dresser, a diamond pen device of repairing abrasive wheel grinding wheel arc is arranged on balladeur train seat [6], and it is made up of big balladeur train [7], pivoted arm [11], roll adjustment chuck [26], diamond pen [14].On big balladeur train [7] a diamond pen device of repairing the emery wheel cylindrical is arranged, it is made up of little balladeur train [12], pivoted arm [24] and diamond pen [13].
2, according to the described grinding attachment of claim 1, it is characterized in that balladeur train seat (6) is contained on the guide rail of support body (5), big balladeur train (7) is contained on the guide rail of balladeur train seat (6), little balladeur train (12) is contained on the guide rail of big balladeur train (7), roll adjustment chuck (26) is contained in the chute of pivoted arm (11), the guide pass on the balladeur train seat (6) its vertically with the horizontal plane inclination at an angle.
3, according to the described grinding attachment of claim 1, it is characterized in that fixing an axle in the hole of pivoted arm (11), this axle is contained in the hole of big balladeur train (7), and with nut at axial restraint, fix an axle in the hole of pivoted arm (24), this axle is contained in the hole of little balladeur train (12), and pivoted arm (11) is rotated in the hole of big balladeur train (7), and pivoted arm (24) rotates in the hole of little balladeur train (12).
4, according to claim 1,2 described grinding attachments, it is characterized in that being equipped with on the support body (5) a rhizoid bar, the nut that matches is fixed on the balladeur train seat (6), one rhizoid bar is housed on the balladeur train seat (6), the nut that matches is fixed on the big balladeur train (7), on the big balladeur train (7) a rhizoid bar is housed, the nut that matches is fixed on the little balladeur train (12), rotary screw rod promotes nut and just can make balladeur train seat (6) respectively, big balladeur train (7), little balladeur train (12) moves along guide rail, roll adjustment chuck (26) is screwed in the chute of pivoted arm (11), unclamp screw and can move roll adjustment chuck (26) with hand, above-mentioned moving can make the centre of gyration of cavetto arc diamond pen adjust to any position in plane coordinate system.
5, according to claim 1,2,3 described grinding attachments, it is characterized in that repairing in the open pore that the cylindrical diamond pen is clipped in pivoted arm (24), cavetto arc diamond pen (14) is clipped in the open pore of roll adjustment chuck (26), the distance block location that the extension elongation of diamond pen in open pore made with carbide alloy, rotate pivoted arm (11) and (24) with hand, abrasive wheel grinding wheel arc and cylindrical just obtain finishing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86205863 CN86205863U (en) | 1986-08-16 | 1986-08-16 | Grinding unit for concave tooth-profile of cylindrical worm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86205863 CN86205863U (en) | 1986-08-16 | 1986-08-16 | Grinding unit for concave tooth-profile of cylindrical worm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN86205863U true CN86205863U (en) | 1987-06-03 |
Family
ID=4808623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 86205863 Withdrawn CN86205863U (en) | 1986-08-16 | 1986-08-16 | Grinding unit for concave tooth-profile of cylindrical worm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN86205863U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1133521C (en) * | 1999-07-26 | 2004-01-07 | 重庆大学 | Approximate grinding method for planer enveloping worm |
| CN102485421A (en) * | 2010-12-01 | 2012-06-06 | 大连新氏传动科技有限公司 | Reticulated vertical lathe grinding device |
| CN104128884A (en) * | 2014-07-23 | 2014-11-05 | 江苏大学 | Tooth profile error control method and device for worm grinder |
| CN110919540A (en) * | 2019-12-19 | 2020-03-27 | 蔡晨波 | Grinding wheel mechanism capable of being obliquely adjusted for tool grinding machine |
-
1986
- 1986-08-16 CN CN 86205863 patent/CN86205863U/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1133521C (en) * | 1999-07-26 | 2004-01-07 | 重庆大学 | Approximate grinding method for planer enveloping worm |
| CN102485421A (en) * | 2010-12-01 | 2012-06-06 | 大连新氏传动科技有限公司 | Reticulated vertical lathe grinding device |
| CN104128884A (en) * | 2014-07-23 | 2014-11-05 | 江苏大学 | Tooth profile error control method and device for worm grinder |
| CN110919540A (en) * | 2019-12-19 | 2020-03-27 | 蔡晨波 | Grinding wheel mechanism capable of being obliquely adjusted for tool grinding machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| RN01 | Renewal of patent term | ||
| 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 |