CN202344361U - Machining device for involute cam - Google Patents
Machining device for involute cam Download PDFInfo
- Publication number
- CN202344361U CN202344361U CN2011205178055U CN201120517805U CN202344361U CN 202344361 U CN202344361 U CN 202344361U CN 2011205178055 U CN2011205178055 U CN 2011205178055U CN 201120517805 U CN201120517805 U CN 201120517805U CN 202344361 U CN202344361 U CN 202344361U
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- cam
- shaft part
- base
- basic circle
- involute
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Abstract
The utility model discloses a machining device for an involute cam. The machining device comprises a clamp base installed on a machine tool guide rail and a support body installed on the clamp base, wherein a slide rail is arranged between the clamp base and the support body; the support body is U-shaped; an upper centre and a lower centre are oppositely arranged on the inner walls of the both sides of the support body; a location mandrel is arranged between the upper centre and the lower centre; a base circle plate and a cam base which synchronously rotate with the location mandrel are sleeved on the location mandrel; a master plate matched with the circular peripheral wall of the base circle plate is arranged at one side of the base circle plate; the master plate is fixedly installed on a machine tool body; and a to-be-machined workpiece is installed on the peripheral wall of the cam base. The machining device for an involute cam disclosed by the utility model is simple in structure, does not need to arranged a master mould with an involute curved surface in advance, and is convenient in implementation, and capable of being used in various machine tools.
Description
Technical field
The utility model relates to a kind of cam processing unit (plant), and concrete is a kind of involute cam processing unit (plant).
Background technology
Cam mechanism can be realized complicated requirement, is widely used in the various automated and semi-automatic mechanical devices, is one of lathe important spare part structure.Grind and just include involute cam on the lathe of shaving the pinion cutter profile of tooth, and the quality of involute cam curve shape has determined directly whether the profile of tooth of shaving the pinion cutter product of this machine tooling closes the symbol specification requirement.Yet aborning, latch moves reciprocatingly on the curved surface of involute cam, causes lathe first wife's involute cam curved surface easy abrasion to scratch, and needs the reconditioning curve shape or makes new involute cam again.
The device of existing processing involute cam all adopts and carries out forming movement with standard cams and process; Under the situation that does not in advance have standard involute pattern; Can't process involute cam, and processing involute cam device be isolated plant, complex structure; Investment is big, is not suitable for the needs of small lot batch manufacture.
The patent No. is that the Chinese patent of CN200910148512.1 discloses a kind of involute milling machine of camshaft; This involute milling machine of camshaft contains fuselage, frame, tailstock; Said fuselage two ends are fixed with frame and tailstock respectively, are connected with main shaft in the frame, and said main shaft is connected with power drive mechanism; Dividing spindle also is housed in this frame, and this dividing spindle is connected with main shaft through gear drive; The front end of dividing spindle is connected with pattern; One side of frame is provided with the cutterhead with the pattern interlock.Under the drive of power drive mechanism, camshaft and pattern rotate simultaneously, carry out forming movement with the cutterhead of pattern interlock, move the involute contour of milling camshaft through the profiling of cutterhead.
Though this involute milling machine of camshaft also can process involute cam; But still need adopt a pattern to carry out forming movement with involute surface, and this involute milling machine of camshaft complex structure, investment is big; Versatility is not high, and this device can not use on other machine tools.
Given this; The utility model is intended to explore a kind of processing involute cam processing unit (plant); This processing unit (plant) does not only need to prepare to have the pattern of involute surface in advance, and simple in structure, can on multiple lathe, use; The small lot batch manufacture needs can be satisfied, production in enormous quantities can also be applicable to.
Summary of the invention
The technical problem that the utility model will solve is to propose a kind of involute cam processing unit (plant); The processing unit (plant) of this involute cam is not only simple in structure; And do not need to be provided with in advance pattern with involute surface, it is convenient to implement, and can on multiple lathe, use; The small lot batch manufacture needs can be satisfied, production in enormous quantities can also be applicable to.
Realize above-mentioned technical purpose; The processing unit (plant) of the involute cam of the utility model; Comprise the clamp base that is installed on the machine tool guideway and be installed in the supporter on the said clamp base that be provided with slide rail between said clamp base and the supporter, said supporter is the U type; And relatively be provided with top and following top on the both sides inwall of supporter; Said is provided with apotting spindle between top and top down, is set with all basic circle dish and cam base with the synchronous rotation of this apotting spindle on the said apotting spindle, and a side of said basic circle dish is provided with the master plate that matches with this basic circle Pan Yuanxingwaizhoubi; Said master plate is fixedly mounted on the bed piece, and workpiece to be processed is installed on the periphery wall of said cam base.
Further; Said apotting spindle is provided with taper shaft part I; Said cam base is provided with the conical through-hole that matches with this taper shaft part I; The external diameter of said taper shaft part I successively decreases along the direction that said basic circle dish points to said cam base gradually, and said cam base sheath is contained on the said taper shaft part I, and is pressed abd fixed on this taper shaft part I through the threaded fastener that is arranged on the said apotting spindle;
Further; Said apotting spindle is provided with the taper shaft part II that is used to install said basic circle dish; Said basic circle dish is provided with the conical through-hole that matches with this taper shaft part II; Said taper shaft part II increases progressively along the direction that said basic circle dish points to said cam base gradually, and said basic circle dish is sleeved on the said taper shaft part II, and is pressed abd fixed on this taper shaft part II through the threaded fastener that is arranged on the said apotting spindle;
Further, the periphery wall of said cam base is provided with the cross section and is trapezoidal locating convex block;
Further, be respectively equipped with on the both ends of the surface of said apotting spindle and the said top and following top centre bore that is complementary;
Further, said slide rail is perpendicular to said folder machine tool guideway glide direction, and said clamp base is provided with is used for the location structure that said supporter is located on slide rail;
Further, said location structure comprises the positioning baffle that is fixedly connected with said clamp base, and said positioning baffle is provided with axis dog screw and the adjustment screw parallel with said slide rail direction.
The utlity model has following beneficial effect:
1, apotting spindle, basic circle dish and the cam base of the utility model through synchronous rotation is set; Through adjustable support body and the position of clamp base on machine tool guideway; Make the basic circle dish be pressed on the working face of master plate, the master plate working face is set to parallel with the machine tool guideway traffic direction, after the lathe start; The basic circle dish is made pure rolling on master plate under the frictional force effect, and drive apotting spindle and the rotation of cam base; Contact point between cam workpiece and the emery wheel is arranged on and master plate working face coplane place, has geometrical principle to know, the curved surface that emery wheel grinds on cam workpiece is involute surface; The involute cam processing unit (plant) of the utility model is simple in structure, do not need the pattern with involute surface is set in advance, and flat master plate and columniform basic circle dish all is easy to make; And this processing unit (plant) can be used on the multiple lathe; All can use like broach sharpening machine, milling machine etc., the involute cam processing unit (plant) of the utility model is installed on existing machine tool can be implemented, simple and convenient and expense is low; The small lot batch manufacture needs can be satisfied, production in enormous quantities can also be applicable to;
2, adopt taper shaft part I and taper shaft part II that cam base and basic circle dish are fixed on the apotting spindle, can avoid the rotation error that adopts key to come radial location to cause, make involute curve more accurate;
3, through not only positioning supports body of location structure is set on clamp base, and can the basic circle dish tightly be pressed on the master plate working face, prevent that the basic circle dish from sliding on the master plate working face.
Description of drawings
Fig. 1 is the structural representation of the utility model involute cam processing unit (plant) embodiment;
Fig. 2 is the process principle figure of the involute cam processing unit (plant) of present embodiment.
The specific embodiment
Elaborate below in conjunction with the specific embodiment of accompanying drawing to the utility model.
As shown in Figure 1; Structural representation for the utility model involute cam processing unit (plant) embodiment; The processing unit (plant) of the involute cam of present embodiment; Comprise lathe, be installed in the clamp base 17 on the machine tool guideway 18 and be installed in the supporter 14 on the said clamp base 17 that be provided with slide rail between said clamp base 17 and the supporter 14, said supporter 14 is the U type; And relatively be provided with top 9 and following top 13 on the both sides inwall of supporter 14; Said top 9 be provided with apotting spindle 8 between top 13 down, be set with all basic circle dishes 10 and cam bases 4 with these apotting spindle 8 synchronous rotations on the said apotting spindle 8, a side of said basic circle dish 10 is provided with the master plate 3 that matches with this basic circle dish 10 circular circumference walls; Said master plate 3 is fixedly mounted on the bed piece 1 through pattern frame 4, and cam workpiece 5 to be processed is installed on the periphery wall of said cam base 4.Preferably, the periphery wall of cam base 4 is provided with the cross section and is trapezoidal locating convex block 41, and cam workpiece 5 is provided with the detent 51 that matches with this locating convex block 41, and cam workpiece 5 is fixedly mounted on the cam base 4 through detent 51 and locating convex block 41.
Apotting spindle 8, basic circle dish 10 and the cam base 4 of the involute cam processing unit (plant) of present embodiment through synchronous rotation is set; Through adjustable support body 14 and the position of clamp base 17 on machine tool guideway 18; Make basic circle dish 10 be pressed on the working face of master plate 3, master plate 3 working faces are set to parallel with machine tool guideway 18 traffic directions, after the lathe start; Basic circle dish 10 is being made pure rolling under the frictional force effect on master plate 3, and drives apotting spindle 8 and 4 rotations of cam base; Contact point between cam workpiece 5 and the emery wheel is set to and master plate 3 working face coplanes, has geometrical principle to know, the curved surface that emery wheel grinds on cam workpiece 5 is involute surface.The involute cam processing unit (plant) of present embodiment is simple in structure, do not need the pattern with involute surface is set in advance, and flat master plate 3 all is easy to make with basic circle dish 10; And this processing unit (plant) can be used on the multiple lathe; All can use like broach sharpening machine, milling machine etc., the involute cam processing unit (plant) of present embodiment is installed on existing machine tool can be implemented, simple and convenient and expense is low; The small lot batch manufacture needs can be satisfied, production in enormous quantities can also be applicable to.
As shown in Figure 2, be the process principle figure of the involute cam processing unit (plant) of present embodiment.When basic circle dish 10 rolls, drive cam workpiece 5 and rotate thereupon; When basic circle dish 10 is rolled to the D point with the contact point that leans on lamina membranacea 3 working faces by the C point; Cam workpiece 5 turns to position that dotted line is painted from solid line position thereupon; The contact point that is cam workpiece 5 and emery wheel becomes the B point by the A point; C ＇ and D ＇ represent that basic circle dish 10 is rolled to D point back and C point and the corresponding position of D point by the C point, A ＇ and B ＇ be after cam workpiece 5 rotations with A point and the corresponding position of B pad.Hence one can see that, and the arc length CD on the basic circle dish 10 equals the length of the C D ＇ on the master plate 3; In addition; When cam workpiece 5 is the A point with the emery wheel contact point; The A point is AC to the length of tangent line of basic circle dish 10, and during for B ＇ point, B ＇ is B ＇ D ＇ to the length of tangent line of basic circle dish 10 with the emery wheel contact point for cam workpiece 5; And the difference of B ＇ D ＇ and AC equals C D ＇, and promptly length of tangent line is the arc length CD that B ＇ D ＇ and the difference of length of tangent line AC equal the basic circle dish 10 between the corresponding point of contact.Can inference learn: on cam workpiece 5 curved surfaces any 2 with basic circle dish 10 on length difference between the corresponding point of contact equal the arc length of basic circle dish 10 between two point of contacts.The machined surface of cam workpiece 5 is an involute surface.
Further; Said apotting spindle 8 is provided with taper shaft part I 81; Said cam base 4 is provided with the conical through-hole 42 that matches with this taper shaft part I 81; The external diameter of said taper shaft part I 81 successively decreases along the direction that said basic circle dish 10 points to said cam base 4 gradually, and said cam base 4 is sleeved on the said taper shaft part I 81, and is pressed abd fixed on this taper shaft part I 81 through the threaded fastener that is arranged on the said apotting spindle 8.The apotting spindle 8 of present embodiment is provided with external screw thread with the part that the miner diameter end of taper shaft part I 81 links to each other, and after cam base 4 is sleeved on the taper shaft part I 81, is pressed abd fixed on the taper shaft part I 81 through packing ring 6 and nut 7, rotates synchronously with apotting spindle 8.Adopt taper shaft part I 81 that cam base 4 is fixed on the apotting spindle 8, can avoid the rotation error that adopts key to come radial location to cause, and, make involute curve more accurate easily to the heart.
Further; Said apotting spindle 8 is provided with the taper shaft part II 82 that is used to install said basic circle dish 10; Said basic circle dish 10 is provided with the conical through-hole 11 that matches with this taper shaft part II 82; Said taper shaft part II 82 increases progressively along the direction that said basic circle dish 10 points to said cam base 4 gradually, and said basic circle dish 10 is sleeved on the said taper shaft part II 82, and is pressed abd fixed on this taper shaft part II 82 through the threaded fastener that is arranged on the said apotting spindle 8.The apotting spindle 8 of present embodiment is provided with external screw thread with the part that the miner diameter end of taper shaft part II 82 links to each other; After basic circle dish 10 is sleeved on the taper shaft part II 82; Be pressed abd fixed on the taper shaft part II 82 through packing ring 11 and nut 12, rotate synchronously with apotting spindle 8.Adopt taper shaft part II 82 that basic circle dish 10 is fixed on the apotting spindle 8, can avoid the rotation error that adopts key to come radial location to cause, and, make involute curve more accurate easily to the heart.
Further; Be respectively equipped with the centre bore that is complementary with said top 9 and following top 13 on the both ends of the surface of said apotting spindle 8; The apotting spindle 8 that adopts this structure not only accurately location and installation between last top 9 and down top 13; And the frictional resistance between apotting spindle 8 and last top 9 and down top 13 is littler, makes basic circle dish 10 be difficult for skidding.
Further, said slide rail is perpendicular to said machine tool guideway 18 glide directions, and said clamp base 17 is provided with is used for the location structure that said supporter 14 is located on slide rail.Adopt with machine tool guideway 18 on the vertical slide rail of glide direction, the position of being convenient to adjust basic circle dish 10 is to the working face of master plate 3.Preferably, said location structure comprises the positioning baffle 19 that is fixedly connected with said clamp base 17, and said positioning baffle 19 is provided with axis dog screw parallel with said slide rail direction 15 and adjustment screw 16.Through not only positioning supports body 14 of location structure is set on clamp base 17, and can basic circle dish 10 tightly be pressed on master plate 3 working faces, prevent that basic circle dish 10 from sliding on master plate 3 working faces.
Introduce the method for the involute cam processing unit (plant) processing involute cam that adopts present embodiment below.
A kind of employing is the involute cam processing method of involute cam processing unit (plant) as stated, comprises the steps:
1) aforesaid involute cam processing unit (plant) is installed: said clamp base 17 is installed on the said machine tool guideway 18; Said supporter 14 is installed on the clamp base 17; Said cam base 4 and basic circle dish 10 are sleeved on said apotting spindle 8, and with being fixed with threaded fastener respectively, and said apotting spindle 8 is installed in saidly top 9 and descend between top 13; Said master plate 3 is installed on the bed piece 1 height such as periphery wall height of the face height of master plate 3 and basic circle dish 10 through pattern frame 2; And cam workpiece to be processed 5 is installed on the periphery wall of said cam base 4 through locating convex block 41 and detent 51;
2) proofread and correct master plate 3 positions, make said master plate 3 working faces parallel with the traffic direction of machine tool guideway 18;
3) regulate the position of said supporter 14 on said clamp base 17; The periphery wall of said basic circle dish 10 is abutted against on the working face of said master plate 3; And, guarantee enough contact forces between basic circle dish 10 and the master plate 3 by dog screw 15 and adjustment screw 16 location;
4) regulate the emery wheel position, make the height such as center line of emery wheel axis and said cam workpiece 5, and the working face of the contact point of emery wheel and cam workpiece 5 and master plate 3 at grade;
5) start lathe; Said involute cam processing unit (plant) does reciprocating linear motion under the drive of machine tool guideway 18; Basic circle dish 10 is back and forth rolling on said master plate 3 under the frictional force effect; And drive said apotting spindle 8 and rotate synchronously with cam base 4, can the machined surface of cam workpiece 5 be processed into involute surface.
Further, in the said step 5),, adopt step 6): keep basic circle dish 10 and master plate relative position constant, and rotate the allowance that said cam base 4 increases cam workpiece 5 if the allowance on the cam workpiece 5 is not enough.Keep basic circle dish 10 and master plate relative position constant; Through rotational positioning axle 8 or direct rotating cam base 4 involute curve is moved on cam workpiece 5; Involute surface on the cam workpiece 5 to cam workpiece 5 is inner move certain distances after, can make cam workpiece 5 leave enough allowance.
Further, adopt step 7): repeat above-mentioned steps 5) and step 6), machine until the involute surface of cam workpiece 5.
Explanation is at last; Above embodiment is only unrestricted in order to the technical scheme of explanation the utility model; Although with reference to preferred embodiment the utility model is specified, those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement the technical scheme of the utility model; And not breaking away from the aim and the scope of the utility model technical scheme, it all should be encompassed in the middle of the claim scope of the utility model.
Claims (7)
1. involute cam processing unit (plant); It is characterized in that: comprise the clamp base that is installed on the machine tool guideway and be installed in the supporter on the said clamp base; Be provided with slide rail between said clamp base and the supporter; Said supporter is the U type, and relatively is provided with top and following toply on the both sides inwall of supporter, and said is provided with apotting spindle between top and time top; Be set with all the basic circle dish and the cam base that rotate synchronously with this apotting spindle on the said apotting spindle; One side of said basic circle dish is provided with the master plate that matches with this basic circle Pan Yuanxingwaizhoubi, and said master plate is fixedly mounted on the bed piece, and workpiece to be processed is installed on the periphery wall of said cam base.
2. involute cam processing unit (plant) according to claim 1; It is characterized in that: said apotting spindle is provided with taper shaft part I; Said cam base is provided with the conical through-hole that matches with this taper shaft part I; The external diameter of said taper shaft part I successively decreases along the direction that said basic circle dish points to said cam base gradually, and said cam base sheath is contained on the said taper shaft part I, and is pressed abd fixed on this taper shaft part I through the threaded fastener that is arranged on the said apotting spindle.
3. involute cam processing unit (plant) according to claim 1; It is characterized in that: said apotting spindle is provided with the taper shaft part II that is used to install said basic circle dish; Said basic circle dish is provided with the conical through-hole that matches with this taper shaft part II; Said taper shaft part II increases progressively along the direction that said basic circle dish points to said cam base gradually; Said basic circle dish is sleeved on the said taper shaft part II, and is pressed abd fixed on this taper shaft part II through the threaded fastener that is arranged on the said apotting spindle.
4. according to each described involute cam processing unit (plant) of claim 1-3, it is characterized in that: the periphery wall of said cam base is provided with the cross section and is trapezoidal locating convex block.
5. according to each described involute cam processing unit (plant) of claim 1-3, it is characterized in that: be respectively equipped with on the both ends of the surface of said apotting spindle and the said top and following top centre bore that is complementary.
6. according to each described involute cam processing unit (plant) of claim 1-3, it is characterized in that: said slide rail is perpendicular to the glide direction of said machine tool guideway, and said clamp base is provided with is used for the location structure that said supporter is located on slide rail.
7. involute cam processing unit (plant) according to claim 6; It is characterized in that: said location structure comprises the positioning baffle that is fixedly connected with said clamp base, and said positioning baffle is provided with axis dog screw and the adjustment screw parallel with said slide rail direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205178055U CN202344361U (en) | 2011-12-13 | 2011-12-13 | Machining device for involute cam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205178055U CN202344361U (en) | 2011-12-13 | 2011-12-13 | Machining device for involute cam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202344361U true CN202344361U (en) | 2012-07-25 |
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ID=46533390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205178055U Withdrawn - After Issue CN202344361U (en) | 2011-12-13 | 2011-12-13 | Machining device for involute cam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202344361U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102423868A (en) * | 2011-12-13 | 2012-04-25 | 重庆工具厂有限责任公司 | Involute cam processing device and processing method thereof |
| CN102941519A (en) * | 2012-11-18 | 2013-02-27 | 大连理工大学 | High-precision drum involute cam grinding device |
-
2011
- 2011-12-13 CN CN2011205178055U patent/CN202344361U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102423868A (en) * | 2011-12-13 | 2012-04-25 | 重庆工具厂有限责任公司 | Involute cam processing device and processing method thereof |
| CN102423868B (en) * | 2011-12-13 | 2013-07-10 | 重庆工具厂有限责任公司 | Involute cam processing device and processing method thereof |
| CN102941519A (en) * | 2012-11-18 | 2013-02-27 | 大连理工大学 | High-precision drum involute cam grinding device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120725 Effective date of abandoning: 20130710 |
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| RGAV | Abandon patent right to avoid regrant |