TWI666395B - Double-row hobbing cam transmission structure - Google Patents

Abstract

The invention provides a double-row hobbing cam transmission structure with higher rigidity and precision. The dual-row hobbing cam transmission structure includes a camshaft and a turret on one side in contact with the camshaft in a rolling manner, and is characterized in that the turret includes a first turntable and a correspondingly arranged on the turret. A second turntable on the side of the first turntable; the outer peripheral wall of the first turntable is provided with a first inclined surface, and the first inclined surface is arranged with a plurality of first rollers rotatably engaged with the camshaft and arranged in an annular interval. A second inclined surface is also provided on the outer peripheral wall of the second turntable, and the second inclined surface is also provided with a plurality of second rollers rotatably capable of meshing with the cam shaft; The first and second slopes are arranged in a V-shape correspondingly.

Description

Double-row hobbing cam transmission structure

The invention relates to the field of transmission mechanisms, in particular to a backlash-free hobbing cam transmission structure.

The cam mechanism has the advantages of easy design, easy to obtain dynamic balance, and high-speed transmission, so it is widely used in industry. Among them, Roller-gear cam mechanisms (RGCMs) are easy to produce and have Dwell and index movements are widely used in various automation application cases.

The hobbing cam mechanism mainly transfers motion and power to the turret by pushing the conjugate contact between the rib and the roller. In order to obtain good characteristics, great attention must be paid to the design and assembly to avoid the rib surface. Intersections and surface overcuts.

However, in actual manufacturing and assembly, the occurrence of various errors is unavoidable, so that the ideal line contact conditions no longer exist, so that the contact conditions between the push rib and the roller are easily transformed into point contact. It affects its motion and dynamic characteristics. On the other hand, the life cycle of the cam mechanism is determined by the actual contact stress.

Based on this, it is necessary to provide a double-row hobbed cam transmission structure in response to the existing technical problems.

In order to solve the existing technical problems, the present invention discloses a double-row hobbing cam transmission. The moving gear transmission structure (100) includes a camshaft (10) and a turret (20) on one side in contact with the camshaft (10) in a rolling manner. The turret (20) includes a first turntable (1) and a second turntable (2) corresponding to one side of the first turntable (1); an outer peripheral wall of the first turntable (1) A first inclined surface (11) is provided, and the first inclined surface (11) is provided with a plurality of first rollers (12) rotatably capable of engaging with the camshaft (10) at an annular interval. The outer peripheral wall of the second turntable (2) is also provided with a second inclined surface (21), and the second inclined surface (21) is also arranged in an annular interval and is fixed with a plurality of rotatably connected with the camshaft ( 10) A second roller (22) that meshes with each other; in addition, the first inclined surface (11) and the second inclined surface (21) are correspondingly arranged in a V shape.

Further, the turret (20) further includes at least two adjustment mechanisms (3) provided in the second turntable (2), and the adjustment mechanism (3) includes a second turntable ( 2) an internal sliding adjustment block (31), a first bolt (32) connected to the first turntable (1) after passing through one side of the adjustment block (31), and one through the adjustment block (31 ) The second bolt (33) connected to the first turntable (1) on the other side, and an adjustment stud set in the center of the adjustment block (31) and one end can abut the first turntable (1). (34) One side of the adjusting block (31) is provided with an inclined surface (311) that allows the adjusting block (31) to widen and narrow from top to bottom; the second turntable (2), which corresponds to An inner inclined groove (23) is respectively provided at the adjusting mechanism (3), and the inner inclined groove (23) corresponds to one side of the inclined surface (311), and a groove inclined surface (231) is matchedly provided.

Further, the turret (20) further includes at least three positioning bolts (4), and the positioning bolts (4) pass through the first turntable (1) and are connected to the second turntable (2) .

Further, the adjusting block (31) further comprises a vertical section (312) through which the first bolt (32) can pass; and an end with which the second bolt (33) can pass, and The horizontal section (313) connected to the top of the vertical section (311), and the connection between the vertical section (312) and the horizontal section (313) can provide The adjustment stud (34) is screwed.

Further, each of the second turntables (2) corresponding to the positioning bolt (4) is provided with a perforation (24) having a larger diameter than the diameter of the positioning bolt (4); the first turntable (1) ), Corresponding to the vertical section (312) of the adjusting block (31), each has a recessed portion (13) for receiving a corresponding end of the vertical section (312).

Further, the first inclined surface (11) corresponding to each of the first rollers (12) is respectively provided with a first connecting seat (111); and the second inclined surface (21) corresponds to Each of the second rollers (22) is respectively provided with a second connecting seat (211).

Further, a stepped column (14) is provided on the center of the first turntable (1) and can be used for corresponding connection and positioning with the second turntable (2).

The beneficial effects of the present invention are:

1. Through the cooperation of the first turntable (1) and the second turntable (2), a turret (20) is formed to cooperate with the camshaft (10), so that the hobbed cam transmission structure (100) of the present invention is different from the traditional rolling Toothed cams ensure that no backlash is generated during transmission, and the equipment can be more accurate and minimize the impact of backlash.

2. Through the cooperation of the adjustment mechanism (3), installation and adjustment can also be facilitated, which is very convenient in production and subsequent maintenance, and the service life of the hobbed cam transmission structure (100) of the present invention is extended.

1‧‧‧ the first turntable

11‧‧‧First slope

111‧‧‧First connector

12‧‧‧ the first roller

13‧‧‧ Depression

14‧‧‧ stepped column

2‧‧‧Second Turntable

21‧‧‧Second bevel

211‧‧‧Second connection seat

22‧‧‧Second Roller

23‧‧‧Slotted inside

231‧‧‧Slot bevel

24‧‧‧ perforation

3‧‧‧ adjustment agency

31‧‧‧Adjustment block

311‧‧‧ bevel

312‧‧‧Vertical Section

313‧‧‧Horizontal Section

32‧‧‧first bolt

33‧‧‧Second Bolt

34‧‧‧ adjusting stud

4‧‧‧ Locating bolt

10‧‧‧ camshaft

101‧‧‧ Pushing ribs

20‧‧‧Turret

100‧‧‧ hobbing cam transmission structure

Figure 1: A schematic perspective view of the present invention.

Fig. 2: A three-dimensional exploded view of the present invention.

Fig. 3: A schematic sectional side view of the present invention.

Figure 4: A three-dimensional implementation of the present invention.

FIG. 5 is a schematic plan sectional view of FIG. 4.

FIG. 6 is a schematic bottom sectional view of FIG. 4.

Fig. 7 is a schematic sectional view taken along the line X-X in Fig. 1.

FIG. 8 is a partial cross-sectional implementation schematic diagram when an adjustment mechanism is applied in the present invention.

FIG. 9 is a schematic cross-sectional implementation diagram of the adjusting mechanism before the application of the present invention.

FIG. 10 is a schematic cross-sectional view of the application of the adjusting mechanism in the present invention.

In order to further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

As shown in FIG. 1 to FIG. 6, the figure discloses a double-row hobbed cam transmission structure. The hobbed cam transmission structure (100) includes a camshaft (10), and a side and A turret (20) that the camshaft (10) contacts in a rolling manner is characterized in that the turret (20) includes a first turntable (1), and a correspondingly disposed on the first turntable ( 1) a second turntable (2) on one side; a peripheral surface of the first turntable (1) is provided with a first inclined surface (11), and the first inclined surface (11) is fixedly arranged at an annular interval A first roller (12) rotatably meshing with the camshaft (10); an outer peripheral wall of the second turntable (2) is also provided with a second inclined surface (21), and the second inclined surface (21) A plurality of second rollers (22) rotatably meshing with the camshaft (10) are fixedly arranged on the upper ring at equal intervals; in addition, the first inclined surface (11) and the second inclined surface (21), the two of them are arranged in a V shape correspondingly.

Among them, the double-row hobbed cam transmission structure (100) of the present invention is different from the traditional hobbed cam, and uses the turret (20) and the cooperation of the first turntable (1) and the second turntable (2) to make the first inclined surface The first roller (12) on (11) and the second roller (22) on the second inclined surface (21) are arranged in a double row. It is in contact with the pushing rib (101) of the camshaft (10) and can be adjusted to cooperate with each other to avoid the influence of various errors during actual manufacturing and assembly, to achieve closer line contact to the ideal situation, and to ensure that there is no backlash during the transmission The effect of backlash on transmission precision is minimized.

Secondly, the first roller (12) and the second roller (22) can rotatably engage with the camshaft (10), that is, make linear contact with the corresponding pushing rib (101) at the same time, as in the fourth As shown in Figure 5 and Figure 5, the camshaft (10) can smoothly and surely transfer motion and power to the turret (20), and stable power transmission extends the overall service life.

Referring to FIG. 7 to FIG. 10, the turret (20) further includes at least two adjustment mechanisms (3) provided in the second turntable (2). The adjustment mechanism (3) includes a A sliding adjustment block (31) provided in the second turntable (2), a first bolt (32) connected to the first turntable (1) after passing through one side of the adjustment block (31), a A second bolt (33) connected to the first turntable (1) after passing through the other side of the adjustment block (31), and a screw is provided in the center of the adjustment block (31) and one end can abut the first turntable (1) an adjusting stud (34), and one side of the adjusting block (31) is provided with an inclined surface (311) that allows the adjusting block (31) to widen and narrow from top to bottom; the second The turntable (2), corresponding to the adjusting mechanism (3), is respectively provided with an inner inclined slot (23), the inner inclined slot (23) corresponds to one side of the inclined surface (311), and a slot is cooperated with the slot Bevel (231).

Among them, through the cooperation of the adjusting block (31), the first bolt (32) and the second bolt (33), as shown in FIG. 8 and FIG. 9, the positioning bolt (4) is loosened before the first bolt ( 32) and the second bolt (33) go down, you can drive the adjustment block (31) down, use the inclined surface (311) to push the second turntable (2), drive the second roller (22), and when the second roller (22) After making linear contact with the pushing rib (101) of the camshaft (10), tighten the positioning bolt (4) to complete the adjustment, and the overall use is simple and convenient.

Secondly, when the adjustment block (31) is to be moved upward, as shown in Fig. 8 and Fig. 10 Display, loosen the positioning bolt (4), then turn the first bolt (32) and the second bolt (33) up, then turn the adjustment stud (34), so that the adjustment stud (34) abuts the second turntable (2), then lift up the adjustment block (31) and move it upwards so that the second turntable (2) can be adjusted again. After the adjustment is completed, it is very convenient to tighten the positioning bolt (4).

Referring to FIG. 2, the turret (20) further includes at least three positioning bolts (4). After the positioning bolts (4) pass through the first turntable (1), they communicate with the second turntable ( 2) Connect.

Among them, through the application of the positioning bolt (4), the action of relaxing and tightening the positioning bolt (4) can be used to achieve the effect of cooperating with the adjustment mechanism (3), allowing the user to easily adjust the first turntable (1) and the second turntable (2).

Please refer to FIG. 2 and FIG. 7. The adjusting block (31) further includes a vertical section (312) through which the first bolt (32) can pass; and a second bolt (33) ) And a horizontal section (313) that is connected at one end to the top of the vertical section (311), and where the vertical section (312) and the horizontal section (313) are connected, the adjusting stud (34) can be screwed.

Among them, the adjustment block (31) composed of the vertical section (312) and the horizontal section (313) allows the adjustment block (31) to move up and down smoothly, and can also smoothly push the second turntable (2).

Please refer to FIG. 2 and FIG. 7. The second turntable (2) corresponding to the positioning bolt (4) is also provided with a perforation (24) having a larger diameter than the diameter of the positioning bolt (4); Each of the first turntables (1) corresponding to the vertical section (312) of the adjusting block (31) is respectively recessed with a recess (for receiving one end of the corresponding vertical section (312)) 13).

Among them, the application of the perforation (24) allows the positioning bolt (4) to have a certain displacement space without affecting the positioning to effectively cooperate with the adjustment of the adjustment mechanism (3).

Secondly, through the application of the depression (13), the vertical section (312) can go down smoothly. There is a certain displacement space for movement, so that the adjustment mechanism (3) can be smoothly adjusted.

Please refer to FIG. 1 and FIG. 2. The first inclined surface (11) corresponds to each of the first rollers (12), and a first connecting seat (111) is respectively convex; the second inclined surface (21), corresponding to each of the second rollers (22), a second connecting seat (211) is respectively convexly provided.

Among them, through the application of the setting of the first connecting base (111) and the second connecting base (211), the first roller (12) and the second roller (22) can be easily installed and positioned, and at the same time, there can be better Shaft support reduces the chance of incorrect operation.

Referring to FIG. 2, a center of the first turntable (1) is also provided with a stepped column (14) for corresponding connection and positioning with the second turntable (2).

Among them, the application of the stepped column (14) allows the first turntable (1) to properly fit the second turntable (2), without worrying that the two cannot effectively cooperate, and can stably rotate together.

The structure, features, and effects of the present invention have been described in detail based on the embodiments shown in the drawings. However, the above are only preferred embodiments of the present invention, but the present invention does not limit the scope of implementation as shown in the drawings. Modifications consistent with the purpose of the present invention should fall within the scope of the patent of the present invention as long as they are within the scope of equal effects.

Claims (7)

A double-row hobbed cam transmission structure. The hobbed cam transmission structure (100) includes a camshaft (10) and a turret (20) that is in rolling contact with the camshaft (10) on one side. ), Characterized in that the turret (20) includes a first turntable (1) and a second turntable (2) corresponding to one side of the first turntable (1); the first The outer peripheral wall of the turntable (1) is provided with a first inclined surface (11), and the first inclined surface (11) is provided with a plurality of first rotating surfaces which are rotatably engaged with the cam shaft (10). A roller (12); the outer peripheral wall of the second turntable (2) is also provided with a second inclined surface (21), and the second inclined surface (21) is also provided with a plurality of rotatable and fixedly arranged at an annular interval. A second roller (22) that can be ground-engaged with the camshaft (10); the first inclined surface (11) and the second inclined surface (21) are arranged in a V-shape correspondingly. The double-row hobbed cam transmission structure according to claim 1, wherein the turret (20) further includes at least two adjustment mechanisms (3) provided in the second turntable (2), The adjusting mechanism (3) includes a slideable adjustment block (31) provided in the second turntable (2), and a connection with the first turntable (1) after passing through one side of the adjustment block (31). A first bolt (32), a second bolt (33) connected to the first turntable (1) after passing through the other side of the adjustment block (31), and a screw provided in the center of the adjustment block (31) and One end can abut the adjustment stud (34) of the first turntable (1), and one side of the adjustment block (31) is provided with an inclined surface that allows the adjustment block (31) to move from top to bottom. (311); the second turntable (2), which corresponds to the adjusting mechanism (3), is provided with an inner inclined slot (23), and the inner inclined slot (23) corresponds to the inclined surface (311) A grooved inclined surface (231) is matched with one side of. The dual-row hobbed cam transmission structure according to claim 2, wherein the turret (20) further includes at least three positioning bolts (4), and the positioning bolts (4) pass through the first After the turntable (1), it is connected to the second turntable (2). The double-row hobbed cam transmission structure according to claim 3, wherein the adjusting block (31) further includes a vertical section (312) through which the first bolt (32) can pass; and A horizontal section (313) through which the second bolt (33) can pass and one end of which is connected to the top of the vertical section (311), and where the vertical section (312) and the horizontal section (313) are connected, can be used for the adjustment The stud (34) is screwed. The double-row hobbed cam transmission structure according to claim 4, wherein the second turntable (2) corresponding to the positioning bolt (4) is further provided with a hole having a larger diameter than the positioning bolt (4). ) Diameter perforations (24); the first turntable (1) corresponding to the vertical section (312) of the adjustment block (31), respectively, each recess is provided with a recess for receiving the corresponding vertical section ( 312) A recess (13) for one end. The double-row hobbed cam transmission structure according to claim 5, wherein the first inclined surface (11) corresponding to each of the first rollers (12) is respectively provided with a first connecting seat ( 111); the second inclined surface (21), which corresponds to each of the second rollers (22), is respectively provided with a second connecting seat (211). The double-row hobbed cam transmission structure according to claim 6, wherein a center of the first turntable (1) is also provided with a step for positioning correspondingly to the second turntable (2). Column (14).