JP2009197897A - Roller gear cam adjusting mechanism and roller gear cam adjusting method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a smaller roller gear cam adjusting mechanism for improving the work efficiency of cam adjusting work, and to provide a roller gear cam adjusting method. <P>SOLUTION: The roller gear cam adjusting mechanism K1 comprises a cam follower 3 provided on the outer periphery of a rotatable turret post 4, a roller gear cam 1 for intermittently feeding the cam follower 3, a camshaft 5 as the shaft of the roller gear cam 1, a pair of bearings 7 for rotatably supporting the camshaft 5, and a body 6 provided with the bearings 7. The roller gear cam adjusting mechanism K1 has a position adjusting member 8 fixed into the body 6 via a screw member while supporting the bearings. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a roller gear cam adjusting mechanism and a roller gear cam adjusting method for adjusting the engagement between a roller gear cam and a cam follower.

  Conventionally, as a machine using a cam mechanism in which a cam follower is engaged with a roller gear cam and a cutting tool or the like is rotated intermittently, for example, an indexing device disclosed in Patent Document 1 or a turret disclosed in Patent Document 2 The head is known. In an apparatus for exchanging a cutting tool or the like using such a cam mechanism, it is necessary to accurately arrange the position of the roller gear cam with respect to the cam follower at a set position in order to finish the product to an accurate dimension. Yes.

5A and 5B are views showing a conventional turret head, in which FIG. 5A is a cross-sectional view of a main part showing an installed state of a camshaft, and FIG. 5B is an enlarged view of a main part showing an engaged state between a roller gear cam and a cam follower. .
As shown in FIGS. 5 (a) and 5 (b), in a conventional machine having a turret head, the cam follower 300 is intermittently operated by rotating a roller gear cam 100 provided on the cam shaft 500 by an electric motor (not shown). The turret post 400 is pivoted by rotating. The roller gear cam 100 is provided on the camshaft 500 so as to be movable in the axial direction, and is fixed by nuts 200, 200 mounted on both sides of the roller gear cam 100, so that movement in the axial direction (arrow A, B direction) is suppressed. ing. The nuts 200 and 200 are rotated by a wrench and loosened after the machine is assembled, and the roller gear cam 100 is moved in the axial direction (in the directions of arrows A and B), whereby the cam groove 100a of the roller gear cam 100 and the cam follower 300 are engaged. It also functions as a roller gear cam adjustment mechanism K100 for adjusting the alignment position to an appropriate state.

One end of the cam shaft 500 is supported by the body 600 via a bearing 700A and a cam shaft flange (retainer) 800, and the other end is supported by the body 600 via a bearing 700B. The bearing 700A on one end side is sandwiched between the end cap 900 and the cam shaft flange 800 by fixing the end cap 900 to the cam shaft flange 800 with the bolt B100. The camshaft flange 800 is fixed to the body 600 by a bolt B200.
JP 2000-117514 A Japanese Patent No. 2984220

  However, in the roller gear cam adjusting mechanism K100 as shown in FIGS. 5A and 5B, the roller gear cam 100 is rotated by a spanner or the like so that the roller gear cam 100 is rotated by the shaft of the cam shaft 500. The cam was adjusted by moving it in the direction. In order to perform this cam adjustment, it is necessary to engage and rotate the nuts 200 and 200 in the body 600, so that a space for rotating the spanner by engaging the nuts 200 and 200 is provided. It is necessary to secure in the body 600 around the roller gear cam 100. As a result, there is a problem that the entire machine becomes large.

In order to reduce the size of the machine having such a roller gear cam adjusting mechanism K100, it is necessary to make the periphery of the roller gear cam 100 as narrow as possible. However, when the periphery of the roller gear cam 100 is narrowed, the positions of the nuts 200 and 200 performed by the spanner There is a problem that adjustment work becomes difficult to perform and workability is deteriorated.
In order to alleviate this problem, a dedicated jig for adjusting the position of the nuts 200 and 200 must be used, which causes a problem that handling of the jig becomes complicated.

Since the roller gear cam adjusting mechanism K100 adjusts the position of the roller gear cam 100 by rotating the nuts 200, 200 provided in the body 600, the operator performs an adjustment operation while visually checking the roller gear cam 100 and the nuts 200, 200. There is a problem that it is difficult and workability is poor.
When the position of the roller gear cam 100 is adjusted using such a roller gear cam adjustment mechanism K100, the adjustment work is often repeated many times until the roller gear cam 100 reaches an appropriate position, and the work efficiency is poor. was there.

  Accordingly, the present invention has been made to solve such problems, and provides a roller gear cam adjustment mechanism and a roller gear cam adjustment method capable of reducing the size and improving the workability of cam adjustment work. Objective.

  In order to solve the above-mentioned problem, the roller gear cam adjusting mechanism according to the first aspect of the present invention includes a cam follower provided on an outer peripheral portion of a rotatable rotating body, a roller gear cam for intermittently feeding the cam follower, and a shaft of the roller gear cam. A roller gear cam adjustment mechanism, comprising: a camshaft comprising: a camshaft; a bearing rotatably supported by the camshaft; and a body provided with the bearing; And a position adjusting member that is provided so as to be movable in the axial direction of the cam shaft and supports the bearing.

According to this configuration, since the body has the position adjusting member that is provided so as to be movable in the axial direction of the cam shaft and supports the bearing, the bearing and cam can be moved by moving the position adjusting member in the axial direction of the cam shaft. The shaft and the roller gear cam can be moved in the axial direction of the cam shaft. For this reason, it is possible to adjust the roller gear cam and the cam follower to a desired position state by moving the position of the position adjusting member.
In this case, for example, if the position adjusting member can be moved in the axial direction of the cam shaft from the outside of the body, the cam adjustment of the roller gear cam engaged with the cam follower can be performed from the outside of the body. In addition, the tool for adjusting the position of the roller gear cam, spanner, etc., which is conventionally used for adjusting the position of the roller gear cam becomes unnecessary, and it is not necessary to insert and rotate these tools in the body. The rotation space is also unnecessary. For this reason, it is possible to reduce the size of the cam mechanism and improve the workability of the cam adjustment work.

  A roller gear cam adjusting mechanism according to a second aspect is the roller gear cam adjusting mechanism according to the first aspect, wherein the position adjusting member is fixed to the body by a screw member.

  According to this configuration, it is possible to move the position adjusting member, the bearing, the cam shaft, and the roller gear cam in the axial direction of the cam shaft by moving the position adjusting member by loosening the screw member. For this reason, if the roller gear cam is positioned at an appropriate position and then the position adjusting member is fixed to the body with a screw member, the roller gear cam and the cam follower can be held in desired positions.

  The roller gear cam adjusting mechanism according to claim 3 is the roller gear cam adjusting mechanism according to claim 2, wherein the position adjusting member has a male screw portion on an outer peripheral portion of the position adjusting member, and the body includes the male screw. It has the internal thread part which a part screws together, It is characterized by the above-mentioned.

  According to such a configuration, since the male screw portion of the outer peripheral portion of the position adjusting member is screwed into the female screw portion of the body, the axial direction of the cam shaft can be achieved by rotating the position adjusting member. Move to. Since the position adjusting member supports the cam shaft of the roller gear cam through a bearing, the roller gear cam moves forward and backward in the axial direction together with the bearing with respect to the body when the position adjusting member is rotated. For this reason, by rotating the position adjusting member, the roller gear cam can be moved in the axial direction to adjust the engagement position and engagement (backlash) between the roller gear cam and the cam follower.

  A roller gear cam adjusting mechanism according to a fourth aspect of the present invention is the roller gear cam adjusting mechanism according to the third aspect, wherein a cap having an engaging portion on an outer surface is provided outside the position adjusting member. And the like are engaged with the engaging portion and the cap is rotated, whereby the position adjusting member is rotated to advance and retract the bearing in the axial direction.

  According to such a configuration, the cap can be rotated in the axial direction by rotating the position adjusting member by rotating the cap with a tool or the like engaged with the engaging portion.

  A roller gear cam adjusting mechanism according to a fourth aspect of the present invention is the roller gear cam adjusting mechanism according to any one of the first to fourth aspects, wherein a screw for suppressing the rotation of the position adjusting member is provided on an outer peripheral portion of the body. A screw hole into which the member is inserted is formed.

  According to such a configuration, since the screw hole for inserting the screw member is formed in the outer peripheral portion of the body, the position adjusting member can be appropriately adjusted by loosening or fixing the screw member. It is possible to adjust the roller gear cam by moving to a proper position, or to fix the roller gear cam at an appropriate position where the roller gear cam and the cam follower are engaged.

  The invention of a roller gear cam adjusting method according to claim 5 is a roller gear cam adjusting method using the roller gear cam adjusting mechanism according to any one of claims 1 to 5, wherein the roller gear cam and the bearing are the cam shaft. The movement of the cam shaft in the axial direction is suppressed by the support means fitted in, and the position adjusting member is suppressed from moving in the axial direction of the cam shaft by being screwed into the body. The roller gear cam is moved in the axial direction of the cam shaft by rotating the position adjusting member, and the position adjusting member is attached to the body by a screw member at an appropriate position where the roller gear cam and the cam follower are engaged with each other. It is fixed.

  According to such a configuration, the roller gear cam, the bearing, and the position adjusting member rotate the position adjusting member to move the roller gear cam in the axial direction of the cam shaft, thereby screwing the position adjusting member that has been adjusted to the appropriate position. The member can be fixed to the body and held in that state.

  According to the roller gear cam adjusting mechanism of the first aspect of the present invention, it is possible to adjust the position of the roller gear cam and the cam follower from the outside of the body, so that the spanner is rotated around the roller gear cam in the conventional body. Resolving space can be eliminated. As a result, it is possible to simplify the position adjustment work of the roller gear cam in the position adjustment work, improve workability, and reduce the size of the entire mechanism.

  According to the roller gear cam adjusting mechanism of the second aspect of the present invention, the position of the roller gear cam can be maintained at an appropriate position with respect to the cam follower by fixing the position adjusting member to the body with the screw member.

  According to the roller gear cam adjusting mechanism of the third aspect of the present invention, the position of the roller gear cam installed on the cam shaft can be adjusted by moving the position adjusting member installed at the end of the cam shaft in the axial direction. For this reason, the position adjustment of the roller gear cam engaged with the cam follower can be performed from the outside of the body. As a result, the cam adjustment work between the roller gear cam and the cam follower is facilitated, and the workability can be improved.

  According to the roller gear cam adjusting mechanism of the fourth aspect of the present invention, the cap rotates the cap by engaging a tool or the like with the engaging portion, whereby the position adjusting member rotates, and the bearing, the cam shaft, The position of the roller gear cam can be adjusted by moving the roller gear cam back and forth in the axial direction. When adjusting the engagement position between the roller gear cam and the cam follower, the cap is disposed outside the mechanism. Therefore, the position adjustment operation is performed while visually confirming the distance the cap moves forward and backward, the engagement site of the tool, etc. This makes it easy to perform cam adjustment work.

  According to the roller gear cam adjusting mechanism of the fifth aspect of the present invention, since the screw hole is formed in the outer peripheral portion of the body, the position of the roller gear cam can be adjusted by rotating the screw member while visually recognizing the screw member. it can. For this reason, it is easy to adjust the engagement position between the roller gear cam and the cam follower, and the workability of the cam adjustment work can be improved.

  According to the roller gear cam adjusting method of the present invention, the position of the roller gear cam engaged with the cam follower can be adjusted from the outside of the body, and the size reduction of the machine and the workability of the position adjusting work can be improved. Can do.

Hereinafter, a roller gear cam adjusting mechanism and a roller gear cam adjusting method according to an embodiment of the present invention will be described with reference to FIGS.
The roller gear cam adjusting mechanism and the roller gear cam adjusting method according to the present invention can be used as long as it is a device that moves the cam shaft provided with the roller gear cam in the axial direction and adjusts the roller gear cam to an appropriate position for engaging the cam follower. There is no particular limitation. Hereinafter, the case where it is used for a turret head will be described as an example.
FIG. 1 is a main part schematic perspective view showing an installed state of a roller gear cam adjusting mechanism according to an embodiment of the present invention. FIG. 2 is a cross-sectional view of the main part showing a cam shaft installation state in the turret head. FIG. 3 is an enlarged view of a main part of FIG. 2 and shows a state where the roller gear cam and the cam follower are engaged.
Before describing the roller gear cam adjusting mechanism K1 of the present invention, first, the automatic machine M in which the roller gear cam adjusting mechanism K1 is used and the turret turning mechanism K2 provided in the automatic machine M will be described.

≪Configuration of automatic machine≫
As shown in FIG. 1, the automatic machine M includes, for example, a turret head unit in which a 4-axis turret head T is attached to a Cell Feeder (registered trademark) F. For example, by rotating the roller gear cam 1 of the cam shaft 5 with the electric motor D and driving the cam mechanism of the roller gear cam 1 and the cam follower 3 (see FIG. 2), the cam follower 3 (see FIG. 2) is rotated intermittently. The spindle S of the turret post 4 is appropriately indexed and replaced with another spindle S to be used for a numerical automatic control machine tool capable of performing various operations. The automatic machine M mainly includes an electric motor D, a roller gear cam adjusting mechanism K1, a turret head T, and a turret turning mechanism K2. This automatic machine M is a machine (unit) equipped with an automatic changer (Automatic Tool Changer) that automatically brings many different types of tools to the working position, and a rotating tool is automatically attached to the spindle according to a program. Yes, it is possible to perform various cutting operations such as coaxial drilling, chamfering, reamer, tapping, etc. without changing the attachment of the workpiece.
The automatic machine M can be used as an automatic tool changer for a machining center by adding movements in the X-axis direction and the Y-axis direction.

≪Turret turning mechanism≫
The turret turning mechanism K2 is a mechanism that causes the roller gear cam 1 provided on the cam shaft 5 to turn the turret post 4 by a predetermined angle through the cam follower 3 by the rotation of the electric motor D. The turret head turning mechanism K2 mainly includes a roller gear cam 1, a cam shaft 5, a cam follower 3, and a roller gear cam adjusting mechanism K1.

<Configuration of roller gear cam>
As shown in FIG. 2, the roller gear cam 1 is a cylindrical cam that is a kind of a three-dimensional cam having a cam groove 1 a on the outer peripheral surface, and performs a feeding operation of intermittently rotating the turret post 4 with a cam follower 3 interposed therebetween. It is a cam for. The roller gear cam 1 is formed in a cylindrical shape along the cam shaft 5 and has a shaft hole (not shown) for inserting the cam shaft 5 and a cam groove 1a with which the cam follower 3 is engaged.
A keyway is formed in the shaft hole of the roller gear cam 1, and the roller gear cam 1 is installed so as to be movable in the axial direction (directions of arrows A and B) with respect to the cam shaft 5. The roller gear cam 1 has nuts 12 and 12 screwed into male screw portions 5a and 5a of the camshaft 5 with collars 11 and 11 and bearings 7 and 7A on both sides, so that the camshaft 5 is axially moved. Movement is suppressed.
The cam groove 1a is composed of a plurality of curved grooves formed on the outer peripheral surface of the roller gear cam 1, and the cam follower 3 is engaged therewith. For example, when the roller gear cam 1 makes one rotation, the cam groove 1a is formed so as to turn the cam follower 3 by 45 degrees, so that another adjacent cam follower 3 is continuously engaged with another cam groove 1a. It has become. Accordingly, when the roller gear cam 1 is rotated twice, the cam follower 3 is rotated 90 degrees so that the turret head T is indexed.

<Composition of cam shaft>
As shown in FIG. 3, the cam shaft 5 is a shaft rod that serves as a rotation shaft of the roller gear cam 1, and is rotatably supported with respect to the body 6 by bearings 7 and 7 </ b> A that are inserted into both ends. The nuts 12 and 12 are screwed onto the camshaft 5 via the collars 11 and 11 and the bearings 7 and 7A, respectively, on both sides of the roller gear cam 1 disposed at the center, so that these members are fitted into the camshaft 5. Has been. The camshaft 5 is provided with a roller gear cam adjusting mechanism K1 that adjusts the position by moving the roller gear cam 1 in the axial direction of the camshaft 5 at one end, and the camshaft 5 is rotated continuously by the electric motor D at the other end. A gear (not shown) for rotation is provided.

<Bearing configuration>
The bearings 7 and 7A are a pair of shaft support members that rotatably support the cam shaft 5 with the roller gear cam 1 interposed therebetween with the collars 11 and 11 interposed therebetween, and include, for example, ball bearings. The bearing 7 on one end side (roller gear cam adjustment mechanism K1 side) has a rotation side (inner ring side) fitted to the cam shaft 5 and held by a collar 11 and a nut 12, and a fixed side (outer ring side) is adjusted in position. It is provided in the small diameter portion 8 c of the member 8 and is sandwiched between the step portion of the small diameter portion 8 c and the cap 9. The bearing 7 on the other end side (the electric motor D side) has a rotating side fitted to the cam shaft 5 and held by a collar 11 and a nut 12, and a fixed side is mounted in the shaft hole 6 c of the body 6.

<Configuration of collar and nut>
The collars 11 and 11 are cylindrical members made of metal, and are interposed between the roller gear cam 1 and the bearings 7 and 7A, and are members for adjusting the position of the roller gear cam 1 in the axial direction.
The nuts 12 and 12 are engaged with the male screw portions 5 a formed at both ends of the cam shaft 5 shown in FIG. 3, so that the bearings 7 and 7 A, the collars 11 and 11, and the roller gear cam 1 fitted into the cam shaft 5 are fitted. It suppresses movement in the axial direction. The nuts 12, 12 fix the cam shaft 5, the bearings 7, 7 A, the collars 11, 11 and the roller gear cam 1 to the outer periphery of the cam shaft 5 so that they move together in the axial direction.
The collars 11 and 11 and the nuts 12 and 12 correspond to a “support member” recited in the claims.

  As shown in FIG. 1, the electric motor D is a power source for turning and feeding the turret turning mechanism K2 such as the camshaft 5 by rotating the camshaft 5 having the roller gear cam 1 through a gear reduction mechanism. . The electric motor D rotates the turret post 4 to which the spindle S is assembled by rotating the roller gear cam 1.

≪Turret head and turret post configuration≫
The turret head T includes a plurality of spindles S to which a tool is attached, a turret post 4 that supports the spindle S, a cam follower 3 (see FIG. 2) for driving the turret post 4 to rotate and index, and the like. ing. The turret head T is provided in a cell feeder (registered trademark) F and is configured to be separable from the main body of the automatic machine M.
A turret post 4 shown in FIG. 1 or the like is a substantially disc-shaped rotary tool turret that forms a turret body to which a tool for rotating and turning a workpiece is mounted. A unit drive shaft (not shown) that outputs a driving force is provided.

<Composition of cam follower>
As shown in FIG. 2, the cam follower 3 is engaged with the cam groove 1a of the roller gear cam 1 to engage the turret post 4 intermittently to index the spindle S (see FIG. 1). For example, it is formed in a roller shape. A plurality of cam followers 3 (e.g., eight) are provided radially at equal intervals on the outer periphery of the turret post 4 so as to match the number of spindles S and the installation position, and are formed as protrusions that engage with the cam grooves 1a. .

<Configuration of spindle and cell feeder (registered trademark)>
The spindle S shown in FIG. 1 is a main shaft for attaching and rotating a tool (not shown) for cutting a workpiece. For example, four spindles S are provided radially on the turret post 4 at equal intervals.
The Cell Feeder (registered trademark) F is a device for feeding the turret head T when machining a workpiece, and the feed speed and the like can be arbitrarily adjusted. This Cell Feeder (registered trademark) F is provided by integrating a turret head T so as to be movable along a slide table (not shown).

≪Configuration of roller gear cam adjustment mechanism≫
As shown in FIG. 2, the roller gear cam adjusting mechanism K1 moves the cam shaft 5 in the axial direction (arrows A and B directions), thereby moving the roller gear cam 1 provided on the cam shaft 5 in the axial direction. The cam is adjusted so that the engagement position between the groove 1a and the cam follower 3 is an appropriate position. The roller gear cam adjusting mechanism K1 is attached to the cam follower 3, the roller gear cam 1, the cam shaft 5, the bearings 7 and 7A, the body 6 on which those members are provided, and the female screw portion 5a of the cam shaft 5. The adjusting member 8 includes a cap 9 that holds the bearing 7 between the position adjusting member 8 and a screw member 10 for fixing the position adjusting member 8 to the body 6.
In the roller gear cam adjusting mechanism K1, relative movement of the roller gear cam 1, the bearing 7, and the position adjusting member 8 with respect to the axial direction of the cam shaft 5 is suppressed by the collars 11, 11 and the nuts 12, 12. After assembling the machine, the roller gear cam adjusting mechanism K1 rotates the position adjusting member 8 in the body 6 to move the roller gear cam 1 in the axial direction of the cam shaft 5, and the cam groove 1a of the roller gear cam 1 and the cam follower 3 are engaged. The position adjusting member 8 can be fixed to the body 6 with the screw member 10 at an appropriate position.

<Body structure>
The body 6 is a housing of the automatic machine M to which the bearings 7 and 7A are attached, and has a female screw portion 6a into which the male screw portion 8a is screwed. A screw hole 6 b into which the screw member 10 that suppresses the rotation of the position adjusting member 8 (loosening of the screw portion) is inserted is formed in the outer peripheral portion of the body 6.

<Configuration of position adjusting member>
As shown in FIG. 3, the position adjusting member 8 moves one bearing 7 provided in the position adjusting member 8 in the axial direction of the cam shaft 5 with respect to the body 6 together with the cam shaft 5, the roller gear cam 1 and the like. A member for adjusting the position of the roller gear cam 1. The position adjusting member 8 is formed with a male screw portion 8a, a large diameter portion 8b, a small diameter portion 8c, and a screw hole 8d. The position adjusting member 8 is a cylindrical screw member having a male screw portion 8a on the outer peripheral portion and a large diameter portion 8b and a small diameter portion 8c on the inner side. By rotating the position adjusting member 8, the bearing 7, the nut 12, the collar 11, the cam shaft 5 and the roller gear cam 1 are all provided so as to move in the axial direction of the cam shaft 5.

The male screw portion 8 a is a portion that is screwed into the female screw portion 6 a of the body 6, and is formed at an outer end portion of the outer peripheral portion of the position adjusting member 8. The male threaded portion 8a is fixed to the position adjusting member 8 in the body 6 and is moved in the axial direction by pressing the tip of a set screw (screw member) 10 screwed into the threaded hole 6b of the body 6. It is supposed to be suppressed.
The large diameter portion 8 b is a portion into which the bearing 7 and the cylindrical portion 9 b of the cap 9 are inserted, and is formed on the outer inner peripheral portion of the position adjusting member 8.
The small diameter portion 8c is a portion where the end surface of the outer ring of the bearing 7 on the roller gear cam 1 side abuts and the bearing 7 is sandwiched between the end surface of the cylindrical portion 9b of the cap 9 and the inner end of the position adjusting member 8 on the roller gear cam 1 side. The step is formed in a step shape. The small diameter portion 8 c is closed by the cap 9. The small diameter portion 8 c serves to position the bearing 7.
The screw holes 8 d are female screw portions into which fastening members (for example, bolts with holes) 13 for fixing the cap 9 to the position adjusting member 8 are screwed, and a plurality of screw holes 8 d are formed on the outer end surface of the position adjusting member 8. .

<Cap configuration>
As shown in FIG. 3, the cap 9 inserts the cylindrical portion 9b into the large-diameter portion 8b of the position adjusting member 8, holds the outer ring of the bearing 7 in the position adjusting member 8 with the small-diameter portion 8c, and adjusts the position. The retainer is fixed to the outside of the member 8 so as to cover the large-diameter portion 8 b and is provided so as to rotate together with the position adjustment member 8. The cap 9 is formed with a lid portion 9c, a cylindrical portion 9b, an engaging portion 9a, a through hole 9d, and a cylindrical portion 9b. The cap 9 has a function of adjusting the cam by advancing and retracting the bearing 7 in the axial direction by engaging a tool or the like with the engaging portion 9 a and rotating the position adjusting member 8 together with the cap 9.

The lid portion 9c has an outer diameter larger than that of the large-diameter portion 8b, is thick, is formed in a disk shape, and has a flange portion on the outer peripheral portion.
The cylindrical portion 9b is a cylindrical portion integrally formed on the bearing 7 side of the lid portion 9c, and is arranged so that the bearing 7 can be pressed against the side wall of the small-diameter portion 8c by the tip end face.
The engaging portion 9a is, for example, a hexagonal hole to which a tip portion of a tool such as a hexagon wrench is engaged, and is formed in the center portion of the lid portion 9c. By engaging the tool with the engaging portion 9a and rotating the position adjusting member 8 together with the cap 9, the camshaft 5 can be moved forward and backward in the axial direction to adjust the position of the roller gear cam 1. .
The through holes 9d are holes through which the fastening members 13 for fixing the cap 9 to the position adjusting member 8 are inserted, and a plurality of through holes 9d are formed in the vicinity of the outer peripheral portion of the lid portion 9c.

≪Configuration of set screw≫
The set screw (screw member) 10 is screwed into a screw hole 6b formed in the body 6 so that the male screw portion 8a formed on the outer peripheral surface of the position adjusting member 8 is pressed against the male screw portion 8a. Thus, the male screw portion 8a screwed into the female screw portion 6a is prevented from being loosened, and the rotation of the position adjusting member 8 is suppressed. The set screw 10 is formed of a so-called potato screw (screw) or the like, and a groove is formed on the head to engage the tip with a tool such as a flat-blade screwdriver.

≪Action≫
Next, the operation of the roller gear cam adjusting mechanism K1 and the roller gear cam adjusting method according to the embodiment of the present invention will be described with reference to FIGS.
The roller gear cam adjusting mechanism K1 assembled as shown in FIG. 2 and FIG. 3 is usually provided with a set screw 10 screwed into the screw hole 6b in the male screw portion 8a of the position adjusting member 8 screwed into the female screw portion 6a of the body 6. Since the front end of each is in pressure contact, the position adjusting member 8 is fixed to the body 6. For this reason, the cap 9, the bearing 7, the nuts 12 and 12, the collars 11 and 11, the roller gear cam 1, and the cam shaft 5 are restrained from moving in the axial direction of the cam shaft 5 with respect to the body 6. The roller gear cam 1 is a cam having an appropriate length in the axial direction of the collars 11 and 11 so that the cam groove 1a is engaged with the cam fore 3 at a predetermined position when the roller gear cam adjusting mechanism K1 is assembled. By mounting on the shaft 5, the roller gear cam 1 is positioned (first stage adjustment).

  Further, when the roller gear cam 1 shown in FIG. 3 is moved in the direction of arrow A (direction adjustment member 8 side) to adjust the cam (second stage adjustment), the set screw 10 is first rotated and loosened. Then, the tip of the set screw 10 is separated from the male screw portion 8a of the position adjusting member 8 so that the position adjusting member 8 can be rotated. Next, a tool is inserted into the engaging portion 9a of the cap 9 outside the body 6 and rotated leftward. If it does so, the outer ring | wheel of the position adjustment member 8 and the bearing 7 will move to the arrow A direction, rotating by being guided by the external thread part 8a and the set screw 10. FIG. As the outer ring of the bearing 7 moves in the direction of arrow A, the inner ring of the bearing 7, nuts 12 and 12, collars 11 and 11, roller gear cam 1 and cam shaft 5 also move in the direction of arrow A. By moving the roller gear cam 1 in this way, the engagement position between the roller gear cam 1 and the cam follower 3 can be finely adjusted to an appropriate position, and the backlash can also be finely adjusted. And the state adjusted to the appropriate position can be hold | maintained by fastening the set screw 10 and fixing the position adjustment member 8. FIG.

  If the cap 9 is rotated in the opposite right direction, the position adjusting member 8 and the outer ring of the bearing 7 rotate to the right, and the inner ring of the bearing 7, the nuts 12 and 12, the collars 11 and 11, the roller gear cam 1 and the cam shaft. 5 can also be moved in the direction of arrow B to adjust the position in the opposite direction.

As described above, in the cam adjustment, when the tool is engaged with the engaging portion 9a exposed to the outside of the body 6 and the cap 9 is rotated, there is no member that obstructs the operation. 1 and the camshaft 5 can be moved back and forth in the axial direction of the camshaft 5, so that the cam adjustment work can be easily performed, and the workability of the cam adjustment work can be improved.
Since the cam adjustment work can be performed outside the body 6, the position of the cam can be adjusted while visually checking the screwing length and the screwing length by screwing. There is no need to align the position repeatedly. For this reason, the time required for the cam adjustment work can be greatly reduced.

  After positioning the roller gear cam 1 by screwing the position adjusting member 8 into the body 6, the roller gear cam 1 is held at the position adjusted position by being fixed to the position adjusting member 8 with a set screw 10 from the outside of the body 6. As described above, in the present invention, the position adjustment operation of the roller gear cam 1 and the position fixing operation of the roller gear cam 1 are performed outside the body 6, so that the workability is good and dedicated for working in the conventional body 6. A tool is not necessary and a general tool can be used, which is convenient. And since the necessity to ensure the space which puts the conventional exclusive tool in the body 6 was eliminated, the body 6 can be reduced in size and weight.

[Modification]
The present invention is not limited to the above-described embodiment, and various modifications and changes can be made within the scope of the technical idea. The present invention extends to these modifications and changes. Of course.

FIG. 4 is a view showing a modified example of the roller gear cam adjusting mechanism according to the embodiment of the present invention, and is a side view of a main part showing a case where the cam core is adjusted with a set screw.
As shown in FIG. 4, the set screws 10 are arranged radially at three or more locations on the outer peripheral portion of the position adjusting member 8, and the shaft core (not shown) of the bearing 7, the cam shaft 5 and the roller gear cam 1 (not shown). The position of the cam core may be adjustable. In this case, for example, by making screw holes 6b at three locations on the outer peripheral body 6 of the position adjusting member 8 and adjusting the screwing amounts of the three set screws 10, the position of the shaft core and backlash can be reduced. Fine adjustments can be made.

In the above embodiment, the rotation of the position adjusting member 8 shown in FIG. 3 is described by engaging the tool with the engaging portion 9a of the cap 9 fixed to the position adjusting member 8 and rotating the tool. The method of rotating the position adjusting member 8 is not limited to this. That is, the position adjusting member 8 may be any member that can be rotated by a tool or the like from the outside of the body 6, and the position adjusting member 8 may be rotated by other methods.
For example, the cap 9 may be formed by forming the outer peripheral portion of the lid portion 9c into a nut shape and rotating with a tool such as a spanner.

  The roller gear cam 1 and the cam shaft 5 may be integrated. The cam groove 1a and the cam follower 3 may be in a relationship of engaging with each other. The cam groove 1a and the cam follower 3 may be formed in a groove shape or a protrusion shape.

It is a principal part schematic perspective view which shows the installation state of the roller gear cam adjustment mechanism which concerns on embodiment of this invention. It is principal part sectional drawing which shows the installation state of the cam shaft in a turret head. FIG. 3 is an enlarged view of a main part of FIG. 2, showing an engaged state between a roller gear cam and a cam follower. It is a figure which shows the modification of the roller gear cam adjustment mechanism which concerns on embodiment of this invention, and is a principal part side view which shows the case where a cam core is adjusted with a set screw. It is a figure which shows the conventional turret head, (a) is principal part sectional drawing which shows the installation state of a cam shaft, (b) is a principal part enlarged view which shows the engagement state of a roller gear cam and a cam follower.

Explanation of symbols

1 Roller gear cam 2 Nut 3 Cam follower 4 Turret post (rotating body)
5 Camshaft 6 Body 6a Female Thread Part 6b Screw Hole 7, 7A Bearing 8 Position Adjustment Member 8a Male Thread Part 9 Cap 9a Engagement Part 10 Screw Member 11 Collar (Supporting Means)
12 Nut (support means)
K1 Roller gear cam adjustment mechanism K2 Turret turning mechanism M Automatic machine T Turret head

Claims (6)

A cam follower provided on the outer peripheral portion of a rotatable rotating body, a roller gear cam for intermittently feeding the cam follower, a cam shaft serving as the shaft of the roller gear cam, and the cam shaft rotatably supporting and integral with the axial direction A roller gear cam adjusting mechanism comprising a bearing provided to move to a body, and a body provided with the bearing,
A roller gear cam adjusting mechanism, wherein the roller gear cam adjusting mechanism is provided on the body so as to be movable in the axial direction of the cam shaft and supports the bearing.   The roller gear cam adjusting mechanism according to claim 1, wherein the position adjusting member is fixed to the body by a screw member. The position adjustment member has a male screw portion on the outer periphery of the position adjustment member,
The roller gear cam adjusting mechanism according to claim 2, wherein the body has a female screw portion into which the male screw portion is screwed. On the outside of the position adjustment member, a cap having an engaging portion on the outer surface is provided,
4. The cap is configured such that a tool or the like is engaged with the engaging portion and the cap is rotated, whereby the position adjusting member is rotated to advance and retract the bearing in the axial direction. The roller gear cam adjustment mechanism described in 1.   5. The screw hole into which a screw member that suppresses rotation of the position adjusting member is inserted is formed in the outer peripheral portion of the body. Roller gear cam adjustment mechanism. A roller gear cam adjusting method using the roller gear cam adjusting mechanism according to any one of claims 1 to 5,
The roller gear cam and the bearing are restrained from moving in the axial direction of the cam shaft by support means fitted to the cam shaft,
The position adjusting member is restrained from moving in the axial direction of the camshaft by being screwed into the body,
The position adjusting member rotates the position adjusting member to move the roller gear cam in the axial direction of the cam shaft, and the position adjusting member is screwed at a proper position where the roller gear cam and the cam follower are engaged. A roller gear cam adjusting method, wherein the roller gear cam is fixed to the body.

Images