JP5482675B2 - Caulking processing method and caulking processing apparatus - Google Patents

Description

  The present invention relates to a crimping processing method and a crimping processing apparatus.

  Conventionally, Patent Document 1 describes assembling a friction clutch using caulking. Specifically, after a rotating disk, a friction plate, and a disc spring are stacked inside a bottomed cylindrical plate, a claw portion formed on the plate is bent by a caulking punch to thereby obtain a rotating disc, a friction plate, and a disc spring. Is held inside the plate.

  The disc spring generates a predetermined elasticity by being bent by being pressed by the claw portion. Thereby, the rotating disk is sandwiched between the plate and the friction plate, and can generate a predetermined torque by the frictional force generated between the rotation disc and the friction plate.

  In this prior art, the reaction force is measured with respect to the disc springs in a single state before being stacked inside the plate, and the descent stop position of the caulking punch is determined based on the measured reaction force. According to this, since the descent of the caulking punch is stopped at the position where the reaction force of the disc spring measured in advance is obtained, it is suppressed from being influenced by the spring characteristic variation of the disc spring used, and a stable set torque is obtained. be able to.

Japanese Patent Laid-Open No. 9-242781

  However, in the above prior art, the descent stop position of the caulking punch is changed according to the disc spring (spring member) to be used, so that it is possible to reliably suppress the influence of the spring characteristic variation and to obtain a stable set torque. For example, the drive control of the caulking punch needs to be performed with high accuracy.

  In view of the above points, an object of the present invention is to provide a crimping processing method and a crimping processing apparatus capable of reliably suppressing the influence of variation in spring characteristics of a spring member.

In order to achieve the above object, according to the first aspect of the present invention, the bottomed tubular member (12) is assembled in the bottomed tubular member (12) in a state where the spring member (18) is bent. ) Of the claw part (12c),
A spring characteristic measuring step for measuring the spring characteristic of the spring member (18);
A crimping step of pressing the claw portion (12c) with a punch (24),
In the caulking process, using a regulating means (22, 30, 31) that regulates the amount of bending of the spring member (18) based on the spring characteristics measured in the spring characteristic measuring process,
As the restricting means (22, 30, 31), a means for restricting the bending amount of the spring member (18) against the pressing force of the punch (24) is prepared.

  According to this, since the bending amount of the spring member (18) is regulated using the regulating means (22, 30, 31) separate from the punch (24), the influence of the spring characteristic variation of the spring member is surely suppressed. be able to.

In invention of Claim 2, in the crimping processing method of Claim 1, as a control means (22, 30, 31),
The bottomed cylindrical member (12) is inserted into the bottomed cylindrical member (12) through a notch (12b) formed in the bottom surface portion (12a), and the spring member (18) and the claw portion (12c). A jig (22) abutting against the interposition member (16) interposed between the
A displacement means (31) for displacing the jig (22) such that the distance between the bottom surface portion (12a) and the interposition member (16) changes;
What has a control means (30) which controls a displacement means (31) based on the measurement result in a spring characteristic measurement process is prepared, It is characterized by the above-mentioned.

  According to this, the notch part (12b) of a bottomed cylindrical member (12) can be utilized effectively, and the bending amount of a spring member (18) can be controlled.

According to a third aspect of the present invention, in the caulking processing method according to the first or second aspect, the caulking process includes a temporary caulking process for temporarily caulking the nail part (12c), and a nail part temporarily caulked in the temporary caulking process. And a caulking process for caulking (12c),
In both the temporary caulking process and the main caulking process, the bending amount of the spring member (18) is regulated using the regulating means (22, 30, 31).

  Thereby, the nail | claw part (12c) can be crimped reliably, restrict | limiting the bending amount of a spring member (18).

In invention of Claim 4, in the caulking process method of Claim 3, in a temporary caulking process, a fixed dimension process is performed with respect to a nail | claw part (12c),
In this caulking process, constant pressure processing is performed on the claw portion (12c).

In the invention according to claim 5, in the caulking processing method according to claim 3 or 4, the punch (24) is used as a temporary caulking step surface (24a) used in the temporary caulking step and used in the main caulking step. Prepare one with a crimping surface (24b) for this caulking,
In the temporary crimping process, the claw portion (12c) is pressed in the radial direction of the bottomed cylindrical member (12) with the temporary crimping punch surface (24a),
In this caulking process, the claw portion (12c) is pressed in the axial direction of the bottomed tubular member (12) with the caulking punch surface (24b).

  Thereby, a nail | claw part (12c) can be crimped more reliably.

In the invention according to claim 6, the claw portion (12c) of the bottomed tubular member (12) so that the spring member (18) is assembled inside the bottomed tubular member (12) in a bent state. A caulking device for caulking,
A punch (24) for pressing the claw portion (12c);
Spring characteristic measuring means (40) for measuring the spring characteristic of the spring member (18);
Restriction means (22, 30, 31) for restricting the amount of deflection of the spring member (18) based on the measurement result of the spring characteristic measurement means (40) when the punch (24) presses the claw portion (12c); With
The regulating means (22, 30, 31) is characterized by regulating the amount of bending of the spring member (18) against the pressing force of the punch (24).

  Thereby, the same effect as that of the invention described in claim 1 can be obtained.

In the invention according to claim 7, in the crimping apparatus according to claim 6, the regulating means (22, 30, 31) is:
The bottomed cylindrical member (12) is inserted into the bottomed cylindrical member (12) through a notch (12b) formed in the bottom surface portion (12a), and the spring member (18) and the claw portion (12c). A jig (22) abutting against the interposition member (16) interposed between the
A displacement means (31) for displacing the jig (22) such that the distance between the bottom surface portion (12a) and the interposition member (16) changes,
It has control means (30) which controls displacement means (31) based on a measurement result of spring characteristic measurement means (40), It is characterized by the above-mentioned.

  Thereby, the same effect as that of the invention described in claim 2 can be obtained.

In the invention according to claim 8, in the caulking processing device according to claim 6 or 7, as the punch (24), a temporary caulking punch surface (24a) for temporarily caulking the claw portion (12c), and temporary caulking A punching surface (24b) for crimping the claw part (12c) temporarily crimped on the punching surface (24a),
The restricting means (22, 30, 31) is configured to temporarily crimp the claw portion (12c) when the temporary crimping punch surface (24a) temporarily crimps the claw portion (12c) and the final crimping punch surface (24b). In both cases, the amount of bending of the spring member (18) is regulated.

  Thus, the same effect as that attained by the 3rd aspect described above can be obtained.

In the invention according to claim 9, in the caulking device according to claim 8, the temporary caulking punch surface (24a) performs a sizing process on the claw portion (12c),
This caulking punch surface (24b) performs constant pressure processing on the claw portion (12c).

According to a tenth aspect of the present invention, in the caulking apparatus according to the eighth or ninth aspect, the temporary crimping punch surface (24a) has a claw portion (12c) in a radial direction of the bottomed cylindrical member (12). Is to press,
The caulking punch surface (24b) presses the claw portion (12c) in the axial direction of the bottomed cylindrical member (12).

  Thus, the same effect as that attained by the 5th aspect can be attained.

  In addition, the code | symbol in the bracket | parenthesis of each means described in this column and the claim shows the correspondence with the specific means as described in embodiment mentioned later.

It is the whole shock absorber in a 1st embodiment, and an exploded view. FIG. 2 is a half sectional view of the friction clutch of FIG. 1. 1 is an overall view of a crimping apparatus in a first embodiment. It is a principal part enlarged view of FIG. It is a block diagram which shows the electric control part of the crimping processing apparatus. (A) is a figure explaining the method of measuring the spring characteristic of a disc spring, (b) is a figure explaining how to calculate the spring height corresponding to the target spring load. It is a figure explaining the action | operation of the crimping processing apparatus in a temporary crimping process. It is a figure explaining the action | operation of the crimping processing apparatus in this crimping process. It is a figure explaining the action | operation in a temporary crimping process and this crimping process. It is a figure explaining the action | operation in a temporary crimping process and this crimping process. It is a figure explaining the action | operation in a temporary crimping process and this crimping process.

  Hereinafter, an embodiment will be described. In this embodiment, the caulking method and the caulking device are applied to the assembly of a friction clutch.

  First, the friction clutch will be described. FIG. 1 is an overall view and an exploded view of a shock absorber provided with a friction clutch. The shock absorber is used as a shock absorber of a starter, for example, and includes a friction clutch 1, a drive side shaft 2, a clutch case 3, and the like.

  The friction clutch 1 has internal gears 10 and 11 of a planetary gear mechanism. The planetary gear 4 of the planetary gear mechanism is connected to the drive side shaft 2. The sun gear 5 of the planetary gear mechanism is connected to a driven shaft (not shown). The clutch case 3 covers a connecting portion between the friction clutch 1 and the drive side shaft 2.

  The friction clutch 1 absorbs excessive torque by rotating the internal gears 10 and 11 when excessive torque is applied to the drive side shaft 2.

  FIG. 2 is a half sectional view of the friction clutch 1. The friction clutch 1 has a case 12 (a bottomed cylindrical member) that accommodates two internal gears 10 and 11. The case 12 is formed in a bottomed cylindrical shape. The bottom surface portion 12a of the case 12 is formed in an annular shape. The case 12 is entirely open on the side opposite to the bottom surface portion 12a.

  A plurality of notches 12b extending in the axial direction are formed on the cylindrical surface of the case 12. This notch 12 b is formed so as to bite into the bottom surface portion 12 a of the case 12.

  Inside the case 12, there are two internal gears 10, 11, three clutch plates 13, 14, 15, two washers 16, 17, and one disc spring 18 (spring member). Contained.

  These members 10, 11, 13 to 18 are arranged inside the case 12 from the bottom surface side to the opening side of the case 12, the disc spring 18, the washer 16 (intervening member), the clutch plate 13, the internal gear 10, The clutch plate 14, the internal gear 11, the clutch plate 15, and the washer 17 are laminated in this order.

  A plurality of claw portions 12 c are provided on the peripheral portion on the opening side of the case 12. The plurality of claw portions 12c are bent and held so that each member inside the case 12 is pressed to the bottom surface side. As a result, the disc spring 18 is urged toward the bottom surface of the case 12 with a predetermined elasticity.

  FIG. 3 is an overall view of a crimping apparatus 20 that bends and forms a plurality of claw portions 12c, and FIG. 4 is an enlarged view of a main part of FIG. The up and down arrows in FIGS. 3 and 4 indicate the up and down direction (vertical direction) in the installed state of the crimping apparatus 20.

  The caulking processing apparatus 20 includes a support jig 21, a backup jig 22 (jig), a workpiece side surface restraining jig 23, a punch 24, a temporary caulking punch driving mechanism 25, and the like.

  The support jig 21 supports the workpiece W (the friction clutch 1 before the claw portion 12c is bent) from below. The workpiece W is transported in the horizontal direction by a transport device (not shown) and placed on the support jig 21 with the bottom surface portion 12a of the case 12 facing downward.

  The backup jig 22 is movable in the vertical direction, and supports the washer 16 in the case 12 from below. Specifically, the backup jig 22 is inserted into the case 12 from the lower side of the case 12 through the notch 12 b of the case 12 and comes into contact with the lower surface of the washer 16. When the backup jig 22 is displaced in the vertical direction, the distance between the bottom surface portion 12a of the case 12 and the washer 16 changes.

  The workpiece side surface restraining jig 23 is movable in the horizontal direction, and restrains the cylindrical surface of the case 12 from the horizontal direction side when the claw portion 12c is bent.

  The punch 24 has a temporary caulking punch surface 24a and a main caulking punch surface 24b (see FIG. 9 described later). The temporary crimping punch surface 24a presses the plurality of claws 12c of the case 12 to perform temporary crimping. The main caulking punch surface 24b further presses the plurality of claws 12c temporarily caulked by the temporary caulking punch surface 24a to perform the main caulking.

  In this example, the punch 24 is movable in the horizontal direction, and the plurality of claw portions 12c are pressed in the horizontal direction by the temporary caulking punch surface 24a. The punch 24 is also movable in the vertical direction, and presses the plurality of claw portions 12c downward with the caulking punch surface 24b.

  The temporary caulking punch drive mechanism 25 drives the punch 24 in the horizontal direction. In this example, the temporary caulking punch drive mechanism 25 includes a motor, a cam, and a roller.

  The caulking punch driving mechanism 26 drives the punch 24 in the vertical direction. In this example, the caulking punch driving mechanism 26 has a servo motor.

  FIG. 5 is a block diagram showing an electric control unit of the crimping apparatus 20. The control device 30 (control means) is composed of a microcomputer including a CPU, ROM, RAM, etc. and its peripheral circuits, and performs various calculations and processing based on a control program stored in the ROM, and is connected to the output side. Control the operation of various devices.

  On the output side of the control device 30, a servo motor 31 (displacement means) that drives the backup jig 22, a motor 32 (may be a cylinder) that drives the workpiece side surface restraining jig 23, and a motor for the temporary caulking punch driving mechanism 25. 33, the servo motor 34 of the caulking punch drive mechanism 26, and the like are connected.

  A measurement result from the spring characteristic measuring device 40 (spring characteristic measuring means) is input to the control device 30. The spring characteristic measuring device 40 measures the spring characteristic of the disc spring 18. Specifically, as shown in FIG. 6A, the disc spring 18 is displaced to two kinds of spring heights H1 and H2 (spring deflection amounts), and the loads F1 and F2 at that time are measured. As the spring characteristic measuring device 40, a device having a linear gauge and a load measuring device is suitable.

  The control device 30 calculates a spring height Hf (spring deflection amount) corresponding to the target spring load based on the measurement result of the spring characteristic measurement device 40. FIG. 6B is a diagram illustrating a calculation example of the spring height Hf (spring deflection amount).

  In the example of FIG. 6B, for a disc spring 18 having an initial spring height H0 of 4.5 mm, a load F1 = 3.1 kN when the spring height H1 = 3.4 mm (spring deflection amount = 1.1 mm). Thus, the load F2 when the spring height H2 = 3.1 mm (spring deflection amount = 1.4 mm) was 4.0 kN.

  Since the spring characteristics (spring load-deflection relationship) of the disc spring 18 are known from the measurement results of these two points, the control device 30 determines the spring height Hf (spring deflection amount) corresponding to the target spring load of 3.4 kN. Can be calculated.

  Next, a method for assembling the friction clutch 1 will be described. First, the characteristics of the disc spring 18 are measured by the spring characteristic measuring device 40 (spring characteristic measuring step).

  Next, based on the measurement result in the spring characteristic measurement step, the control device 30 calculates the spring height Hf corresponding to the target spring load (spring deflection amount calculation step).

  Next, the disc spring 18 whose spring characteristics have been measured in the spring characteristic measurement step is placed on the bottom surface portion 12 a of the case 12, and the washer 16, the clutch plate 13, the internal gear 10, and the clutch plate 14 are placed on the disc spring 18. The internal gear 11, the clutch plate 15, and the washer 17 are laminated in this order to obtain a workpiece W (lamination process).

  Next, the work W obtained in the stacking process is transported by a transport device (not shown) and set on the support jig 21 (setting process). In the stacking step, the case 12 may be set on the support jig 21 and the members 10, 11, 13 to 18 may be stacked on the support jig 21.

  Next, as shown in FIG. 7, the backup jig 22 is displaced in the vertical direction by the backup jig servomotor 31 (backup jig displacement step). Specifically, the vertical position of the backup jig 22 is adjusted so that the distance between the bottom surface portion 12a of the case 12 and the washer 16 matches the calculated spring height Hf.

  Next, temporary crimping is performed (temporary crimping process). In this step, as schematically shown in FIG. 7, in the state where the backup jig 22 supports the washer 16 from the lower side, the side face of the case 12 is restrained by the work side face restraining jig 23, and a plurality of punches By advancing each of 24 from the circumferential direction toward the center, the plurality of claw portions 12c of the case 12 are tilted inward by, for example, about 30 °. Details of how to fold the claw portion 12c in the temporary crimping process will be described later.

  At this time, the members 10, 11, 13 to 18 in the case 12 are pressed from above by the work pressing jig 27 schematically shown in FIG. 7. Details of how to hold the members 10, 11, 13 to 18 by the work pressing jig 27 will be described later.

  In the temporary crimping process, the punch 24 is advanced to the forward end, so that the processing of the claw portion 12c is a sizing process. Further, in the temporary crimping process, the side surface of the case 12 is restrained by the workpiece side surface restraining jig 23, so that the punch 24 is prevented from being deformed such that the side surface of the case 12 swells when the plurality of claw portions 12c are tilted inward. Is done.

  Then, this caulking is performed (main caulking process). Specifically, as schematically shown in FIG. 8, in a state where the backup jig 22 supports the washer 16 from below and the work side surface restraining jig 23 restrains the side surface of the case 12, the punch 24. Is lowered to press the plurality of claw portions 12c of the case 12, and the plurality of claw portions 12c are tilted inward to approximately 90 °. The details of how to push down the claw portion 12c in the caulking process will be described later.

  In this caulking process, since processing is performed until the load by the punch 24 becomes a specified load, the processing of the claw portion 12c is constant pressure processing. Further, in this caulking process, the side surface of the case 12 is restrained by the work side restraint jig 23, so that the punch 24 is prevented from being deformed so that the side surface of the case 12 swells when the plurality of claws 12c are tilted inward. Is done.

  As described above, the plurality of claw portions 12 c are bent and molded with the members 10, 11, 13 to 18 housed in the case 12, and the friction clutch 1 is obtained.

  9-11 is a figure explaining the detail of the action | operation in a temporary crimping process and this crimping process.

  First, as shown in FIG. 9A, the punch 24 is lowered to a predetermined position. Next, as shown in FIG. 9B, the punch 24 advances inward in the radial direction of the case 12, and the claw portion 12c is tilted inward by the temporary caulking punch surface 24a (temporary caulking). The punch 24 moves forward until the temporary caulking punch surface 24a gets over the claw portion 12c.

  The figure which looked at the workpiece | work W and the punch 24 at this time from the upper side is shown to Fig.10 (a). The work pressing jig 27 presses the hatched portion from the upper side in FIG. That is, the workpiece holding jig 27 is configured to hold the members 10, 11, 13 to 18 (laminated parts) in the case 12 between the plurality of punches 24 provided corresponding to the plurality of claw portions 12 c. It has a shape that is partially pressed down.

  Specifically, as shown in FIG. 10B, the work pressing jig 27 is formed with a relief shape for avoiding interference with the plurality of punches 24. Then, the work pressing jig 27 presses the in-case laminated components 10, 11, 13 to 18 with a pressing surface 27 a positioned between the plurality of punches 24.

  10A shows a state in which the punch 24 has advanced, and FIG. 10B shows a state in which the punch 24 has been lowered.

  Next, as shown in FIG. 9C, the punch 24 descends and the claw portion 12c is further tilted inward (main crimping). As shown by an arrow C1 in FIG. 11, the position of the backup jig 22 varies vertically depending on the measurement result in the spring characteristic measurement process.

  In this caulking, as shown by the arrow C2 in FIG. Thereby, the distance H1 between the backup jig 22 and the punch 24 is kept constant.

  If the stacking dimension A1 of the parts in the case shown in FIG. 11 is measured in advance and the punch 24 is varied up and down with a variable dimension obtained by adding the difference between the measured value and the reference dimension, a constant crimped state is obtained. It becomes possible to produce. The measurement of the stacking dimension A1 of the parts in the case can be performed in the spring characteristic measurement process.

  Furthermore, if the plate thickness t1 of the case 12 shown in FIG. 11 is measured and the measured value is used to vary the punch 24 up and down, the accuracy of crimping can be further improved.

  According to the present embodiment, the backup jig 22, the control device 30, and the backup jig servomotor 31 regulate the amount of deflection of the disc spring 18 based on the spring characteristic of the disc spring 18 measured by the spring characteristic measurement device 40. It constitutes the regulation means.

  That is, in the caulking process (temporary caulking process and main caulking process), the backup jig 22 supports the washer 16 from below at a position corresponding to the spring characteristic of the disc spring 18. The amount of deflection of the disc spring 18 is regulated.

  In the friction clutch 1 assembled in this way, the internal gears 10 and 11 can be pressed with a target load regardless of the spring characteristic variation of the disc spring 18. For this reason, since the prescribed slip torque can be obtained by suppressing the occurrence of variations in the slipperiness of the internal gears 10 and 11, the quality of the friction clutch 1 can be stabilized.

  In this embodiment, the backup jig 22 supports the washer 16 from below, and restricts the amount of deflection of the disc spring 18 against the pressing force of the punch 24. For this reason, the influence by the spring characteristic variation of the disc spring 18 can be suppressed reliably.

  In the present embodiment, the backup jig 22 is inserted into the case 12 from the notch 12b formed in the bottom surface 12a of the case 12 and is interposed between the disc spring 18 and the claw 12c. 16 abuts. For this reason, the notch part 12b of the case 12 can be used effectively, and the bending of the disc spring 18 can be regulated well.

  In the present embodiment, the claw portion 12c is bent stepwise in these two steps while restricting the amount of deflection of the disc spring 18 using the backup jig 22 in both the temporary crimping step and the main crimping step. For this reason, it is possible to reliably caulk the claw portion 12c while restricting the amount of bending of the disc spring 18.

  In the temporary crimping process, it is desirable to perform a constant sizing process on the claw part 12c, and in the present caulking process, it is desirable to perform a constant pressure process on the claw part 12c.

  In the present embodiment, the claw portion 12c is pressed in the radial direction of the bottomed tubular member 12 by the temporary caulking punch surface 24a of the punch 24 in the temporary caulking process, and in the main caulking process, Since the claw portion 12c is pressed in the axial direction of the bottomed cylindrical member 12, the claw portion 12c can be caulked more reliably.

(Other embodiments)
In the above embodiment, the caulking method and the caulking device of the present invention are applied to the assembly of the friction clutch. However, the present invention is not limited to this, and the bottomed tube is in a state where the spring member is bent. The present invention can be widely applied to a caulking processing method and a caulking processing apparatus in which a claw portion of a bottomed cylindrical member is bent and caulked so as to be assembled inside a cylindrical member.

12 Case (Cylinder with bottom)
12c Claw 18 Belleville spring (spring member)
22 Backup jig (jigs, regulation means)
24 Punches 24a Temporary caulking punch surface 24b Real caulking punch surface 30 Control device (control means, regulating means)
31 Servo motor for backup jig (displacement means, regulation means)
40 Spring characteristic measuring device (spring characteristic measuring means)

Claims (10)

A caulking process method in which the claw portion (12c) of the bottomed tubular member (12) is bent and crimped so that the spring member (18) is assembled in the bottomed tubular member (12) in a bent state. There,
A spring characteristic measuring step for measuring a spring characteristic of the spring member (18);
A caulking step of pressing the claw portion (12c) with a punch (24),
In the caulking process, using restricting means (22, 30, 31) for restricting the amount of deflection of the spring member (18) based on the spring characteristics measured in the spring characteristic measuring process,
A caulking method comprising preparing as the regulating means (22, 30, 31) a material that regulates the amount of bending of the spring member (18) against the pressing force of the punch (24). As the regulating means (22, 30, 31),
The spring member (18) and the claw are inserted into the bottomed tubular member (12) through a notch (12b) formed in the bottom surface portion (12a) of the bottomed tubular member (12). A jig (22) that comes into contact with the interposed member (16) interposed between the portion (12c) and
Displacement means (31) for displacing the jig (22) such that the distance between the bottom surface portion (12a) and the interposition member (16) is changed;
2. The crimping method according to claim 1, further comprising a control means (30) for controlling the displacement means (31) based on a measurement result in the spring characteristic measurement step. The caulking process includes a temporary caulking process for temporarily caulking the claw part (12c), and a main caulking process for caulking the claw part (12c) temporarily caulked in the temporary caulking process,
The amount of bending of the spring member (18) is regulated using the regulating means (22, 30, 31) in both the temporary crimping process and the main crimping process. Caulking method. In the temporary crimping process, a sizing process is performed on the nail part (12c),
The caulking method according to claim 3, wherein in the caulking step, constant pressure processing is performed on the claw portion (12c). As the punch (24), one having a temporary caulking punch surface (24a) used in the temporary caulking step and a main caulking punch surface (24b) used in the main caulking step is prepared,
In the temporary crimping step, the claw portion (12c) is pressed in the radial direction of the bottomed tubular member (12) with the temporary crimping punch surface (24a),
The said crimping process WHEREIN: The said nail | claw part (12c) is pressed to the axial direction of the said bottomed cylindrical member (12) with the said punching surface (24b) for this crimping, The Claim 3 or 4 characterized by the above-mentioned. Caulking method. A caulking processing device that caulks the claw portion (12c) of the bottomed cylindrical member (12) so that the spring member (18) is assembled inside the bottomed cylindrical member (12) in a bent state. And
A punch (24) for pressing the claw portion (12c);
Spring characteristic measuring means (40) for measuring the spring characteristic of the spring member (18);
When the punch (24) presses the claw portion (12c), restricting means (22, 30) for restricting the amount of deflection of the spring member (18) based on the measurement result of the spring characteristic measuring means (40). 31)
The crimping apparatus characterized in that the regulating means (22, 30, 31) regulates the amount of bending of the spring member (18) against the pressing force of the punch (24). The regulating means (22, 30, 31)
The spring member (18) and the claw are inserted into the bottomed tubular member (12) through a notch (12b) formed in the bottom surface portion (12a) of the bottomed tubular member (12). A jig (22) that comes into contact with the interposed member (16) interposed between the portion (12c) and
Displacement means (31) for displacing the jig (22) such that the distance between the bottom surface portion (12a) and the interposition member (16) is changed;
The crimping apparatus according to claim 6, further comprising a control means (30) for controlling the displacement means (31) based on a measurement result of the spring characteristic measurement means (40). The punch (24) includes a temporary caulking punch surface (24a) for temporarily caulking the claw portion (12c) and the claw portion (12c) temporarily caulked by the temporary caulking punch surface (24a). And a crimping surface (24b) for this caulking
The restricting means (22, 30, 31) are arranged such that the temporary crimping punch surface (24a) temporarily crimps the claw portion (12c) and the final crimping punch surface (24b) is the claw portion (12c). The crimping apparatus according to claim 6 or 7, characterized in that the amount of bending of the spring member (18) is regulated both in the case of performing the actual crimping. The temporary caulking punch surface (24a) is for performing a sizing process on the claw portion (12c),
The crimping device according to claim 8, wherein the crimping punch surface (24b) performs constant pressure processing on the claw portion (12c). The temporary caulking punch surface (24a) presses the claw portion (12c) in the radial direction of the bottomed tubular member (12),
The caulking according to claim 8 or 9, wherein the caulking punch surface (24b) presses the claw portion (12c) in the axial direction of the bottomed tubular member (12). Processing equipment.

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