JPH0197563A - Fillet roll device - Google Patents

Abstract

PURPOSE:To enable application of rolling on four kinds of fillet roll machining parts containing a pin part, by providing first and second opening and closing arms, used for two different journal parts, each having fillet parts on both sides, and a third opening and closing arm used for the pin part. CONSTITUTION:On fillet parts C' on both ends of narrow journal parts C1 and C2, fillet parts on both ends of a wide journal part, and fillet parts B' at both ends of a pin part B1 of a crank shaft, rolling is applied by means of a first opening and closing arm 19, a second opening and closing arm 20, and a third opening and closing arm 22, respectively, each provided on both sides with fillet rollers 36, according to the width of each part. Regarding a single-sided fillet journal part having a fillet part only on the one side positioned at the end part of the crank shaft, rolling is applied by using the fillet rollers 36 on the one side of the first and second opening and closing arms 19 and 20.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fillet roll device that rolls fillet portions of journal portions and pin portions of a crankshaft of an engine or the like.

(Prior Art) Generally, in engine crankshafts, rolls are applied to the fillets at both ends of each journal part and pin part for the purpose of improving strength. 1986-195
There is one shown in Publication No. 61. This fillet roll device basically includes a movable base that is movable in the axial direction of the crankshaft, a support member and a swinging arm provided on the movable base, and a pivot arm that is pivoted to the support member so as to be openable and closable. a first opening/closing arm (a pair of plates in the publication) holding a pair of fillet rollers facing the fillet portions at both ends of the journal portion of the crankshaft;
It is comprised of a second opening/closing arm that is pivotally supported by the swing arm so as to be openable and closable, and holds a pair of fillet rollers facing the fillet portions at both ends of the pin portion of the crankshaft, respectively. Then, the crankshaft is rotated around its axis with the first opening/closing arm holding the journal part of the crankshaft and the second opening/closing arm holding the pin part of the crankshaft. A pair of fillet rollers provided on the arm roll the fillet portions at both ends of the journal portion, and a second
The fillet portions at both ends of the pin portion are rolled by a pair of fillet rollers provided on the opening/closing arm. In this case, since the second opening/closing arm is pivotally supported by the swing arm, it follows the eccentric rotation of the pin part, and each pair of fillet rollers in both arms faces both ends of the journal part and the pin part, respectively. The fillets are provided at two locations in the axial direction at intervals corresponding to the widths of the journal portion and the pin portion, so that each fillet portion at both ends of the journal portion and both ends of the pin portion can be rolled at the same time. It has become. When the rolling process for each journal part and pin part is completed, the first.
After opening the second opening/closing arm, these arms are transferred to the next journal section and pin section by the movable table, and in this way, each journal section and each fillet section at both ends of the bottle section are sequentially rolled. It is supposed to be done.

(Problems to be Solved by the Invention) Incidentally, in a crankshaft, there are cases where a shaft portion having a smaller diameter than the journal portion is directly connected to the front end side of the crankshaft of the journal portion located at the end. In this case, the journal portion has a fillet portion only on the opposite end side.

Therefore, as shown in the above publication, for rolling the journal part of this single fillet,
This means that it is necessary to separately provide an opening/closing arm that holds the fillet roll at only one location in the axial direction. Also,
In a crankshaft, it is common for multiple pin parts to have the same width, but for the journal part,
For example, the second case for a four-cylinder engine. The width of the journal portion located at the center of the journal portion between the third cylinders may be made wider than the width of the other journal portions. In that case, it is necessary to provide two types of opening/closing arms with different axial spacing between the fillet rollers for the journal portion having fillet portions on both sides. As a result, for a crankshaft that is provided with a single fillet journal portion as described above at one end and a journal portion that is wider than the other journal portions in the center,
At least four types of opening/closing arms, including one for the pin portion, are required, making the fillet roll device extremely complicated.

Therefore, the present invention provides a fillet roll device for a crankshaft having a single fillet journal portion as described above, and in which other journal portions have different widths. It is an object of the present invention to simplify the structure of this type of fillet roll device by minimizing the number of opening/closing arms for rolling fillet portions.

(Means for Solving the Problems) That is, the fillet roll device according to the present invention has a narrow journal portion having fillet portions on both sides, a wide journal portion having fillet portions on both sides, and a narrow journal portion having fillet portions on both sides. The crankshaft is intended for a crankshaft that is provided with a fillet journal part having only one fillet part and a pin part which is eccentric with respect to these journal parts and has fillet parts on both sides, and which rotates around the axis. A first opening/closing arm having fillet rollers disposed on both sides at intervals corresponding to the narrow journal portions as each pair of opening/closing arms that sandwich the journals and pin portions of the crankshaft via fillet rollers; , a second opening/closing arm having fillet rollers disposed on both sides at intervals corresponding to the width of the wide journal section; and fillet rollers disposed on both sides at intervals corresponding to the width of the bin section; and a third opening/closing arm that can follow eccentric rotation. The fillet portion in the single fillet journal portion is configured to be rolled using a fillet roller on one side of the first opening/closing arm or the second opening/closing arm.

(Function) According to the above configuration, the fillet portions at both ends of the narrow journal portion, the fillet portions at both ends of the wide journal portion, and the fillet portions at both ends of the bottle portion of the crankshaft are The rolling process is performed by the first opening/closing arm, the second opening/closing arm, and the third opening/closing arm each having fillet rollers arranged on both sides corresponding to the width. As for the single fillet journal portion located at the end of the crankshaft and having a fillet portion only on one side, rolling is performed using the fillet roller on one side of the first opening/closing arm or the second rM closing arm. There is no need to provide a dedicated opening/closing arm for the single fillet journal portion. In that case, if the width of this single fillet journal portion is narrower than the narrower journal portion having fillet portions on both sides, either the first opening/closing arm or the second opening/closing arm may be used; When the width of the single fillet journal portion is wider than the narrower one of both fillet journal portions and narrower than the wider one, a second opening/closing arm for this wide journal portion is used. In either case, the fillet roller on the unused side of the opening/closing arm protrudes from the single fillet journal portion toward the end of the crankshaft, and the rolling operation for the fillet portion on one side of the single fillet journal portion is difficult. It never gets in the way.

(Example) Next, examples of the present invention will be described.

First, the configuration of the crankshaft A to which this embodiment is applied will be explained with reference to FIG. B4, both ends and each bottle part B1
-5 journal parts 01 to C5 provided between -84
and has. Each of the bin portions 81 to B4 has the same width LP and fillet portions B' at both ends, respectively.
It has B'. In addition, each of the journal parts C1 to C5 has fillet parts c' and c' on both sides, except for the journal part C2 located at the right end in the drawing, and the journal located at the left end. The portion C, and the second and fourth journal portions C2 and C4 from the left (hereinafter, these journal portions C1+C2 and C4 are referred to as the first journal portion) have the same width Ljl and are located in the center. The journal part Cs (hereinafter referred to as the second journal part) is the first journal part C, C2, C4.
The width Lj2 is wider than the width Ljr of . Furthermore, in the drawing, the journal part C5 located at the right end (hereinafter referred to as the third journal part) has a fillet part C5 only on one side.
', and the width Ljs is the first journal portion c,
, C2, C4 is wider than the width Lj+ of the second journal portion C.
It is narrower than the width Ljz of 3.

Next, the overall structure of the fillet roll device according to this embodiment will be explained with reference to FIG. 2.3. It has a main shaft 3 arranged in the horizontal direction and a tail presser 4 supported by another support 2 facing the main shaft 3, and one end of the crankshaft A is secured by a chuck 5 provided at the tip of the main shaft 3. while holding the motor 6 and supporting the other end with the tail presser 4.
This rotates the crankshaft A together with the main shaft 3. Moreover, a pair of rail stands 7.7 extending in the axial direction of the crankshaft A are installed in parallel on the upper ends of each of the above-mentioned supports 2...2, and a movable stand 8 is provided above the rail stands 7.7. The engaging members 9.9 fixed to the lower surface of the movable base 8 are slidably engaged with the rails 10.10 laid on the upper surface of the rail base 7.7, so that the movable base 8 is movable in the axial direction of the crankshaft A. A ball screw 12 disposed parallel to the rail 10.10 is screwed into a screw member 11 fixed to the lower surface of the movable table 8, and a motor 13 for rotating the ball screw 12 is provided. As a result, the movable base 8 is driven along the rail 10.10 in the axial direction of the crankshaft A by the operation of the motor 13.

Further, a pair of support plates 14 are provided on the lower surface of the movable table 8.
．． 14 is installed vertically, and extends in the axial direction of the crankshaft A between both plates 14. Second support shaft 15.1
6 has been constructed. A first opening/closing arm 19 for the first journal portions C, C2, C4 of the crankshaft A and a first opening/closing arm 19 for the second journal portion C3 are connected to the first support shaft 15 located below via support members 17.18. A second opening/closing arm 20 is supported, and a pin portion 81 of the crankshaft A is supported on the second support shaft 16 located above via a swinging member 21 that is swingably supported on the support shaft 16. A third opening/closing arm 22 for ~B4 is supported. These opening and closing arms 1
9.26.22, 1st. Second opening/closing arm 19.2
0, as shown in FIG. 3 (only the first opening/closing arm 19 is shown), the central portion is pivoted to the lower end of the support member 17 (or 18 in the case of the second opening/closing arm 20), so that it can be opened and closed freely. A pair of upper arms 19a (20a) and lower arms 19
b (20b), and both arms 19a, 1
9b (20a, 20b) has a pair of upper and lower roller units 23 facing each other at the end on the crankshaft A side.
．． 23 (24, 24) is attached to the end portion on the opposite side of the crankshaft A, the roller unit 23.23 (24) is biased in the direction of extension.
A cylinder 25 (26) is connected to the cylinder 25 (26) which urges the end portion to which the cylinder 24) is attached in the closing direction. Also, pin part B
The third opening/closing arm 2'1 for 1 to B has a similar configuration, and includes a pair of upper arm 22a and lower arm 22b whose central part is pivoted to the lower end of the swinging member 21 and can be opened and closed. In addition, a pair of upper and lower roller units 27 and 27 are provided at the ends of the arms 22a and 22b on the crankshaft A side.
(see Fig. 4), and the roller unit 27, 27 is attached to the end on the side opposite to the crankshaft A.
cylinder 28 that urges the end to which is attached in the closing direction
are connected.

Here, as shown in FIG. 2, the second opening/closing arm 20
and a motor 29 that moves the third opening/closing arm 22 in the axial direction of the crankshaft A along the support shafts 15 and 16, respectively.
．． 30, and the distance between these opening/closing arms 20.22 and the first opening/closing arm 19 is adjustable. Further, a pair of opening/closing arm pressers 31 and 31 are provided near the core presser 4 that supports one end of the coolant shaft A. Furthermore, as shown in Fig. 3, the first and second
Upper arms 19a, 20 in opening/closing arms 19.20
The upper arms 19a, 20a when the opening/closing arm 19.20 is open are disposed at the end of the side opposite to the crankshaft A.
Cylinder 32,33 that regulates the position of (see Figure 2)
The third opening/closing arm 22 is moved downward by a cylinder 34 when the opening/closing arm 22 is opened to regulate the position of the upper arm 22a and to move the swinging member 21
A regulating member 35 is provided to prevent the swinging.

On the other hand, each pair of roller units 23.23, 24, 24, 27. As shown in Fig. 4, a pair of fillet rollers 36, 36 are rotatably supported in a V-shape at a predetermined distance in the axial direction with both ends of the journal part or the bin part of the crankshaft A facing, and A back-up roller 39 is rotatably provided at the back via a shaft 37 and a needle bearing 38. Among these roller units, the distance between each pair of fillet rollers 36.36 in the roller unit 23.23 of the first opening/closing arm 19 is equal to the first journal portion CI + c21 in the crankshaft A.
The distance between each pair of fillet rollers 36.36 in the roller unit 24.24 of the second opening/closing arm 20 is the width of the second journal portion Cs of the crankshaft A. The dimension Jlj2 corresponds to the width Ljz, and the distance between each pair of fillet rollers 36 and 36 in the roller unit 27 27 of the third opening/closing arm 22 for the pin part is the same as that of the pin part B in the crankshaft A! ~The dimension ip corresponds to the widths t and p of B4.

Next, the operation of this fillet roll device will be explained.

First, as shown in FIG. 2, one end of the crankshaft A is gripped by the chuck 5 of the main shaft 3, the other end is supported by the tail presser 4, and the motor 13 moves the movable base 8 in the axial direction of the crankshaft A. and move the movable base 8 to
The first opening/closing arm 19 that moves together with the crankshaft A is positioned corresponding to the journal part C1 located on the leftmost side in the drawing, and the third opening/closing arm 22 for the bottle part is moved by the motor 30 to the first opening/closing arm 19. The position is adjusted so that the third opening/closing arm 22 is positioned corresponding to the leftmost pin portion B1 of the crankshaft A. Next, the upper arms 19a, 22a and the lower arm 19b of the 1rM closed arm 19 and the 31jFI closed arm 22
, 22b are respectively closed by cylinders 25 and 28,
As shown in FIG. 4, the journal portion C0 and pin portion B of the crankshaft A are held between a pair of upper and lower roller units 23.23 and 27.27 in both opening and closing arms 19.22, respectively. In this state, the motor 6 rotates the crankshaft A around its axis via the main shaft 3. At this time, the third opening/closing arm 22 moves following the eccentric rotation of the pin portion Bl because the swinging member 21 that pivotally supports it swings around the second support shaft 16. In addition, the width Lj1 of the journal portion C1 and the roller unit 23.2 of the first opening/closing arm 19 that clamps it.
Distance between a pair of fillet rollers 36°36 in 3
Ijt and the width LP of the pin portion B1 correspond to the distance iIp between the pair of fillet rollers 36.36 in the roller unit 27.27 that clamps them, so that the width LP of the journal portion C1 and the pin portion B1 corresponds to each other. The fillet portions C', C' and B', B' at both ends are rolled, respectively, as shown in FIG. In this case,
In the drawing, the width of the second journal part C2 from the left is Lj
1, whereas the distance between the fillet rollers 36.36 in the roller unit 24.24 of the second opening/closing arm 20 corresponding to this is jj2, and these do not correspond. As shown in the figure, the second
The upper and lower arms 20a and 20b of the opening/closing arm 20 are opened and put into a rest state. In this way, as shown in FIG. 1, in the first operation, the crankshaft A is located at the leftmost position in the same way as the journal C1 which is located at the leftmost position in the drawing. The rolling process for the fillet portions c', c' and B', B' on both sides of the pin portion B is completed.

Next, each opening/closing arm 19, 20, 22 is moved together with the movable base 8 in the axial direction of the crankshaft A to perform the second operation on the journal section and the pin section. Each width Lj1. of the second journal part C2 from the left in FIG. 1, the second pin part B2, and the third journal part C3. LP, Lj2 and the distance flj+, jlP, j between each fillet roller 36, 36 in the first opening/closing arm 19, third opening/closing arm 22, and second opening/closing arm 20 located correspondingly thereto, respectively.
ljz correspond to each other. Therefore, using all the opening/closing arms 19, 20, and 22 mentioned above, fillet parts C', C', B', at both ends of the second and third journal parts C2, C, and the second pin part B2, In addition, in the third operation in which the rolling process for B' is performed simultaneously, the fillet parts B' and B at both ends of the third pin part B3 from the left in FIG. '
Roll processing is performed on the material.

Then, during the fourth operation, the widths Lj1.
Fillet roller 36.36 spacing fIj1 at t, p
．． The first opening/closing arm 19 and the third opening/closing arm 22 corresponding to the ip are placed in corresponding positions, and the fillet portions C at both ends of the fourth journal portion C4 and the fourth bottle portion B4 are
', C', B', and B' are rolled. At this time, the second opening/closing arm 20 located corresponding to the fifth single fillet journal part C5 located on the rightmost side in the drawing The fillet portion C' on one side of the journal portion C5 is rolled at the same time. In other words, the width L of the single fillet journal portion C5
Since jjz is narrower than the distance ij2 between the pair of fillet rollers 36 and 36 in the second WJ closing arm 20, as shown in FIG. When the fillet roller 36'' on the opposite side protrudes toward the front end of the crankshaft of the journal portion C5,
This does not interfere with the rolling work on the fillet portion C', and in this way, the second opening/closing arm 20 for the widest center journal portion C3 is used to open the single fillet journal portion C5 at the end of the crankshaft. Rolling processing will be performed. Note that the single fillet journal portion C by this second opening/closing arm 20
When performing the rolling process in step 5, use the opening/closing arm presser 31.
31, the upper and lower arms 20a of the second opening/closing arm 20
, 20b are supported from the shaft end side of the crankshaft A,
The arms 20a, 20b are prevented from escaping laterally.

(Effects of the Invention) As described above, according to the present invention, there are two types of journal parts having fillet parts on both sides and having different widths, a single fillet journal part having fillet parts only on one side, and a fillet part having fillet parts on both sides. In a fillet roll device that performs rolling processing on each of the fillet portions of the crankshaft provided with a bin portion having
, a second opening/closing arm, and a third opening/closing arm used for the bottle part, and the first opening/closing arm described above. Since the configuration is such that one of the second opening/closing arms is used to roll one fillet part of the single fillet journal part, a total of four types of fillet roll parts including the bin part can be processed. Processing is possible with three opening/closing arms. This simplifies the structure of this type of fillet roll device.

[Brief explanation of the drawing]

Fig. 1 is an overall front view of a crankshaft to which an embodiment of the present invention is applied, Fig. 2 is a front view of a fillet roll device according to an embodiment of the present invention, and Fig. 3 is a line shown in Fig. 2. An enlarged cross-sectional view of the same device after cutting. Figure 4 is an enlarged view of the main parts showing the state during the first rolling operation. Figure 5 is an enlarged view of the main parts showing the state during the fourth rolling operation. It is. . 19... First opening/closing arm, 20... Second opening/closing arm, 22... Third opening/closing arm, 36... Fillet roller, A... Crankshaft, B, ~B4... Bin part , c1+ c21 c4...Narrow journal portion, C3...Wide journal portion, C,...Single fillet journal portion.

Claims (1)

[Claims] (1) A narrow journal part with fillets on both sides, a wide journal part with fillets on both sides, and a single fillet journal part with fillets on only one side, and for these journal parts. A fillet roll device for rolling each of the fillet portions of a crankshaft, which includes a pin portion that is eccentric and has fillet portions on both sides, the journal portions and pins of the crankshaft rotating around the axis. The first opening/closing arm has fillet rollers arranged on both sides at intervals corresponding to the narrow journal section, and the first opening/closing arm has fillet rollers arranged on both sides at intervals corresponding to the narrow journal section. a second opening/closing arm having fillet rollers disposed on both sides at intervals corresponding to the width of the pin portion; and a second opening/closing arm having fillet rollers disposed on both sides at intervals corresponding to the width of the pin portion and capable of following the eccentric rotation of the pin portion. 3 opening/closing arm, and is configured to roll the fillet portion in the single fillet journal portion using one fillet roller of the first opening/closing arm or the second opening/closing arm. Characteristic fillet roll device.