Bearing riveting device and riveting equipment

Abstract

The utility model discloses a bearing riveting device and riveting equipment. The bearing riveting device comprises a riveting arm, a center push rod, an elastic piece and a riveting tool bit. When a bearing and a workpiece need to be riveted together, the riveting arm moves downwards, the pushing face of the center push rod makes contact with the bearing, along with continuous downward movement of the riveting arm, the elastic piece is pressed, the bearing is pressed through the pushing face, and in the downward movement process of the riveting arm, a riveting cutter on the riveting cutter bit cuts out a riveting point on the workpiece downwards. The bearing and the workpiece are riveted together through the riveting point, after the riveting point is riveted, the riveting arm is reset upwards, the bearing and the workpiece are pressed downwards through the elastic force of the elastic piece, and the riveting cutter is reset upwards along with the riveting arm till the riveting cutter is disengaged from the workpiece, so that the situation that the workpiece and the bearing are lifted upwards together by the riveting cutter can be avoided, the production line abnormity is reduced, and the production efficiency is improved. The riveting equipment comprises a servo press and a bearing riveting device, wherein the servo press is used for driving the bearing riveting device to move in the height direction.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of motor production equipment, and particularly relates to a bearing riveting device and a riveting equipment. BACKGROUND

[0002] The intelligent integrated brake system (IPB) is one of the main directions of the development of modern automobile brake control, and the brake-by-wire motor is one of the main equipment of the intelligent integrated brake system. In the production process of the brake-by-wire motor, the bearing needs to be riveted to the end cover of the motor. The existing technology has the problem that the riveting equipment cannot be quickly separated from the product after riveting is completed, which will cause the riveting equipment to lift the product when it is reset upward. CONTENT OF THE UTILITY MODEL

[0003] The bearing riveting device and the riveting equipment provided by the present application can avoid lifting the workpiece and the bearing upward together after riveting is completed.

[0004] In a first aspect, the present application provides a bearing riveting device, which comprises a riveting arm, a center push rod, an elastic member and a riveting tool bit. The middle part of the riveting arm is provided with a shaft hole in the axial direction. At least part of the center push rod is slidably arranged in the shaft hole in the axial direction of the riveting arm. The elastic member is arranged between the center push rod and the riveting arm, and the center push rod is provided with a pushing surface capable of contacting the bearing. The riveting tool bit comprises a mounting sleeve and a riveting tool. The mounting sleeve is arranged on the riveting arm, and the riveting tool is arranged on the lower surface of the mounting sleeve. The riveting tool is used to rivet the bearing and the workpiece together.

[0005] In a second aspect, the present application further provides a riveting equipment, which comprises a servo press and a bearing riveting device. The riveting arm of the bearing riveting device is connected with the output end of the servo press.

[0006] The bearing riveting device and the riveting equipment provided by the present application have at least the following beneficial effects:

[0007] The bearing riveting device provided by the present application comprises a riveting arm, a center push rod, an elastic member and a riveting tool bit. When it is needed to rivet the bearing and the workpiece (the motor end cover) together, the riveting arm moves downward, the pushing surface of the center push rod contacts the bearing, the elastic member is compressed and presses the bearing tightly through the pushing surface as the riveting arm continues to move downward. During the downward movement of the riveting arm, the riveting tool on the riveting tool bit cuts a rivet point downward on the workpiece. The rivet point rivets the bearing and the workpiece together. After the rivet point is riveted, the riveting arm resets upward, the elastic force of the elastic member presses the bearing and the workpiece downward, and the riveting tool resets upward along with the riveting arm until the riveting tool is separated from the contact with the workpiece. This can avoid lifting the workpiece and the bearing upward together by the riveting tool, reduce the abnormality of the production line and improve the production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0008] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments with reference made to the accompanying drawings. The drawings are for purposes of illustration only and are not intended to be limiting in any respect. Furthermore, where used in the drawings, like reference numerals have been used to indicate like or similar portions for the preferred embodiments. In the drawings:

[0009] Figure 1 is a first sectional view of the bearing riveting device of the present application;

[0010] Figure 2 is a bottom view of the bearing riveting device of the present application;

[0011] Figure 3 is a second sectional view of the bearing riveting device of the present application;

[0012] Figure 4 is a schematic view of the bearing riveting device, bearing and motor end cover of the present application;

[0013] Figure 5 is a schematic view of the structure of the bearing and motor end cover after riveting;

[0014] Figure 6 is a schematic view of the structure of the riveting device of the present application;

[0015] The explanation of the reference numerals is as follows:

[0016] 10, riveting arm; 10a, shaft hole; 10b, movable hole;

[0017] 20, center push rod; 21, pushing surface; 22, positioning protrusion; 20a, avoiding groove;

[0018] 30, elastic member;

[0019] 40, riveting bit; 41, mounting sleeve; 42, riveting knife;

[0020] 50, positioning sleeve; 51, upper surface of the positioning sleeve; 52, lower surface of the positioning sleeve;

[0021] 60, connecting pin;

[0022] 70, threaded member;

[0023] 80, bearing;

[0024] 90, motor end cover; 91, riveting point;

[0025] 100, riveting device; 110, bearing riveting device; 120, servo press; 130, wire body. DETAILED DESCRIPTION

[0026] The features and exemplary embodiments of the various aspects of the present application will be described in detail below with reference to the drawings. The following detailed description is merely intended to explain the present application, and is not intended to limit the present application. The present application can be implemented without some of the specific details, which are well known to those skilled in the art. The following description of the embodiments is merely provided to give a better understanding of the present application by showing examples of the present application.

[0027] It should be noted that the relational terms herein, such as first and second, and the like, are used solely to distinguish one from another entity or action, without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element preceded by "comprises... a" does not, without more constraints, foreclose the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0028] The embodiment discloses a bearing riveting device and a riveting equipment, the bearing riveting device is used for riveting a bearing 80 and a motor end cover 90 together, wherein the bearing 80 to be riveted is assembled in the end cover hole of the motor end cover 90 when incoming, the bearing 80 and the motor end cover 90 are riveted together through the riveting device, so that the bearing 80 and the motor end cover 90 are kept in stable connection.

[0029] As shown in Figure 1 The bearing riveting device comprises a riveting arm 10, a center push rod 20, an elastic member 30, a riveting cutter head 40 and a positioning sleeve 50, and specifically as follows:

[0030] The lower surface of the riveting arm 10 is upwardly provided with a shaft hole 10a (the depth direction of the shaft hole 10a is consistent with the axial direction of the riveting arm 10), at least part of the center push rod 20 is inserted into the shaft hole 10a from bottom to top, the center push rod 20 is coaxially arranged with the riveting arm 10, and the center push rod 20 and the riveting arm 10 can move relative to each other in the axial direction of the riveting arm 10. The riveting arm 10 is provided with a movable hole 10b which penetrates the riveting arm 10 in the radial direction of the riveting arm 10 and is in communication with the shaft hole 10a. The connecting pin 60 is radially arranged in the movable hole 10b and can move up and down in the movable hole 10b, that is, the connecting pin 60 can move in the axial direction of the riveting arm 10 in the movable hole 10b. The upper end of the center push rod 20 is connected with the connecting pin 60. In this embodiment, the sliding stroke of the center push rod 20 can be limited by designing the movable hole 10b and the connecting pin 60.

[0031] As shown in Figure 1 , the elastic member 30 is arranged in the shaft hole 10a, the two ends of the elastic member 30 are respectively abutted with the center push rod 20 and the inner wall of the shaft hole 10a, and the expansion direction of the elastic member 30 is consistent with the axial direction of the riveting arm 10. In this embodiment, the elastic member 30 is preferably a spring, and the spring is coaxially arranged on the outer periphery of the center push rod 20.

[0032] As shown in Figure 2 , the lower surface of the center push rod 20 is configured as a pushing surface 21 which can abut against the upper end surface of the bearing 80 and give the bearing 80 an elastic pushing force downward after riveting is completed, so as to separate the riveting device from the motor end cover 90 which has been riveted.

[0033] As shown in Figure 2 , in some preferred embodiments, the lower surface of the center push rod 20 is provided with a positioning protruding column 22 which extends downward, the positioning protruding column 22 is coaxial with the center push rod 20, and the positioning protruding column 22 can be inserted into the inner ring of the bearing 80 downward so as to realize positioning between the riveting device and the bearing 80 to be riveted.

[0034] As shown in Figure 2 and Figure 3 , the riveting tool bit 40 includes a mounting sleeve 41 and a riveting tool 42. The mounting sleeve 41 is arranged on the riveting arm 10, and specifically at least part of the mounting sleeve 41 is coaxially arranged on the lower end of the riveting arm 10. The mounting sleeve 41 is detachably connected with the riveting arm 10 through the threaded member 70 (such as a connecting bolt), so that different specifications of the mounting sleeve 41 can be conveniently replaced. The center push rod 20 is coaxially arranged downward through the mounting sleeve 41 and extends below the mounting sleeve 41.

[0035] As shown in Figure 2As shown, the riveting knives 42 are arranged on the lower surface of the mounting sleeve 41, and are used to rivet the bearing 80 and the workpiece together. The pushing surface 21 of the center pushing rod 20 protrudes downward to the lower surface of the riveting knives 42, i.e., the pushing surface 21 is lower than the lower surface of the riveting knives 42. The riveting knives 42 and the mounting sleeve 41 can be welded or integrally formed. In this embodiment, multiple riveting knives 42 are arranged at equal intervals along the circumference of the mounting sleeve 41. The riveting knives 42 and the workpiece (motor end cover 90) at least partially overlap in the axial projection, so that each riveting knife 42 can rivet a rivet point 91 on the motor end cover 90 (as shown in FIG. 8). Figure 5 As shown, multiple riveting knives 42 can rivet multiple rivet points 91, thereby ensuring the stability between the motor end cover 90 and the bearing 80.

[0036] As shown in FIG. 7, Figure 2 In this embodiment, the lower end of the center pushing rod 20 is provided with multiple avoiding grooves 20a, which penetrate the center pushing rod 20 downward. The multiple avoiding grooves 20a are arranged at equal intervals along the circumference of the center pushing rod 20. The multiple avoiding grooves 20a and the multiple riveting knives 42 are arranged in one-to-one correspondence in the axial direction, and the avoiding grooves 20a are used to avoid the riveting knives 42 when moving downward.

[0037] As shown in FIG. 7, Figure 3 The positioning sleeve 50 is coaxially arranged on the outer periphery of the mounting sleeve 41. The upper surface 51 of the positioning sleeve abuts against the stepped surface on the outer periphery of the mounting sleeve 41 (abuts in the axial direction of the riveting arm 10). The positioning sleeve 50 and the mounting sleeve 41 can be detachably connected, such as bolt connection, magnetic connection, etc. When the riveting device is riveted downward, the lower surface 52 of the positioning sleeve can abut against the inner upper surface of the motor end cover 90, which can limit the downward stroke of the riveting device and can also feedback whether the riveting is in place.

[0038] As shown in FIG. 7, Figure 3 In this embodiment, the riveting knives 42 protrude downward from the lower surface 52 of the positioning sleeve, i.e., the lower surface of the riveting knives 42 is lower than the lower surface 52 of the positioning sleeve. In the axial direction of the riveting arm 10, the lower surface of the riveting knives 42 and the lower surface 52 of the positioning sleeve have a predetermined distance difference H, which is the riveting depth. In this embodiment, the positioning sleeve 50 with different axial lengths can be replaced according to actual needs to achieve different depths of riveting.

[0039] The working principle of the bearing riveting device of this embodiment is as follows, as shown in FIG. 7, Figure 4 As shown in FIG. 7, Figure 4 The rivet point is shown in FIG. 8.

[0040] The motor end cover 90 with the bearing 80 assembled is conveyed to the position right below the riveting arm 10, and an external actuator (such as a servo press) drives the riveting arm 10 to move downward;

[0041] The positioning protrusion 22 at the lower end of the center push rod 20 is coaxially inserted into the inner ring of the bearing 80 to be riveted, and as the riveting arm 10 continues to move downward, the pushing surface 21 of the center push rod 20 is in contact with the upper end surface of the bearing 80, and as the riveting arm 10 moves downward, the elastic member 30 is gradually compressed, and the pushing surface 21 can elastically compress the bearing 80 in the end cover hole of the motor end cover 90 at this time, so as to ensure the smooth progress of the riveting work.

[0042] As the riveting arm 10 continues to move downward, the riveting arm 10 and the center push rod 20 move axially relative to each other, the riveting knife 42 at the lower end of the riveting arm 10 passes through the avoiding slot 20a of the center push rod 20 downward, the riveting knife 42 rivets a rivet point 91 at the hole opening position of the end cover hole downward, the rivet point 91 is in contact with the bearing 80 in the end cover hole, and then the bearing 80 is limited in the end cover hole of the motor end cover 90 through the rivet point 91, as shown in Figure 5 .

[0043] At the same time that the rivet point 91 is in contact with the bearing 80, the lower surface 52 of the positioning sleeve is in contact with the upper surface of the hole opening of the end cover hole, so as to limit the continuous downward movement of the riveting knife 42, at this time it indicates that the riveting is in place, and the external actuator drives the riveting arm 10 to move upward.

[0044] As the riveting arm 10 moves upward, the restoring force of the elastic member 30 makes the pushing surface 21 of the center push rod 20 have a downward movement tendency, thereby driving the already assembled bearing 80 and the motor end cover 90 to move away from the riveting knife 42 in the opposite direction, that is, the riveting knife 42 moves upward under the drive of the riveting arm 10, while the bearing 80 and the motor end cover 90 are pushed downward by the pushing surface 21 of the center push rod 20, thereby solving the problem that the riveting knife 42 lifts the bearing 80 and the motor end cover 90 upward after the riveting is completed.

[0045] As shown in Figure 6 , the embodiment also discloses a riveting device, the riveting device 100 comprises a servo press 120 and a bearing riveting device 110, the servo press 120 is arranged on one side of a line body 130 (the line body is used for conveying motor end covers and bearings to be assembled) through a rack, the output end of the servo press 120 is connected with the riveting arm 10 of the bearing riveting device, and the servo press 120 drives the riveting arm 10 to move upward and downward.

[0046] The above merely describes a specific implementation of the present application. Those skilled in the art can clearly understand the specific working processes of the system, modules and units described above for the convenience and brevity of description, and can refer to the corresponding processes in the foregoing method embodiments, which will not be described herein again. It should be understood that the protection scope of the present application is not limited to this, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical range disclosed by the present application, and these modifications or replacements should be covered within the protection scope of the present application.

Claims

1. A bearing riveting device, characterized in that, It includes a riveting arm (10), a central push rod (20), an elastic element (30), and a riveting cutter head (40); The riveting arm (10) has a shaft hole (10a) in the middle along its axial direction; at least part of the central push rod (20) is slidably disposed in the shaft hole (10a) along the axial direction of the riveting arm (10); the elastic element (30) is disposed between the central push rod (20) and the riveting arm (10), and the central push rod (20) is provided with a pushing surface (21) that can contact the bearing (80). The riveting head (40) includes a mounting sleeve (41) and a riveting knife (42). The mounting sleeve (41) is disposed on the riveting arm (10), and the riveting knife (42) is disposed on the lower surface of the mounting sleeve (41). The riveting knife (42) is used to rivet the bearing (80) and the workpiece together.

2. The bearing riveting device according to claim 1, characterized in that, The central push rod (20) has a positioning protrusion (22) extending downward from its pushing surface (21).

3. The bearing riveting device according to claim 2, characterized in that, The central push rod (20) is provided with a relief groove (20a) that corresponds one-to-one with the riveting knife (42).

4. The bearing riveting device according to claim 1, characterized in that, It also includes a connecting pin (60); the riveting arm (10) is provided with a movable hole (10b), the connecting pin (60) passes through the movable hole (10b), and the connecting pin (60) can move in the movable hole (10b) along the axial direction of the riveting arm (10); one end of the central push rod (20) is connected to the connecting pin (60).

5. The bearing riveting device according to claim 1, characterized in that, The lower surface of the mounting sleeve (41) is provided with a plurality of rivet knives (42) spaced apart along its circumference.

6. The bearing riveting device according to claim 5, characterized in that, The mounting sleeve (41) is connected to the riveting arm (10) by a threaded part (70).

7. The bearing riveting device according to claim 1, characterized in that, It also includes a positioning sleeve (50) fitted on the outer periphery of the mounting sleeve (41), a riveting knife (42) protruding downward from the lower surface (51) of the positioning sleeve, and a predetermined distance difference between the lower surface of the riveting knife (42) and the lower surface (51) of the positioning sleeve.

8. The bearing riveting device according to claim 7, characterized in that, The mounting sleeve (41) has a stepped surface on its outer periphery, and the upper surface (52) of the positioning sleeve abuts against the stepped surface in the axial direction of the riveting arm (10).

9. The bearing riveting device according to claim 7 or 8, characterized in that, The positioning sleeve (50) and the mounting sleeve (41) are detachably connected.

10. A riveting device, characterized in that, It includes a servo press (120) and a bearing riveting device (110) as described in any one of claims 1 to 9, wherein the riveting arm (10) of the bearing riveting device is connected to the output end of the servo press (120).

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