Double-station pressing machine used for intermediate shaft and capable of rapidly calibrating coaxiality

Abstract

The utility model relates to the technical field of steering systems, in particular to a double-station pressing machine used for an intermediate shaft and capable of rapidly calibrating the coaxiality. A double-station pressing machine used for an intermediate shaft and capable of rapidly calibrating the coaxiality comprises a rack, a pressing servo motor and a pressing machine platform and is characterized in that the lower portion of the rack is connected with the pressing machine platform, the pressing servo motor is arranged at the top of the rack, and a driving shaft of the pressing servo motor penetrates through the top of the rack to be connected with an upper calibration device; and a coaxiality calibration device is arranged on the press platform. Compared with the prior art, the double-station pressing machine used for the intermediate shaft and capable of rapidly calibrating the coaxiality is matched with a simple calibration tool, rapid identification and calibration of the coaxiality deviation of equipment are achieved, and operation is easy and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of steering systems, in particular to a double-station press for quickly calibrating the coaxiality of an intermediate shaft. Background Art

[0002] The steering intermediate shaft is used to connect the steering column and the steering gear in the automobile steering system, and bears the transmission torque inside the steering system. The intermediate shaft produced by our company adopts the spline interference assembly method to ensure the axial breakout force and breaking torque of the shaft / tube and the fixed yoke. If the coaxiality of the equipment deviates during the shaft / tube spline pulling process or assembly process, it will cause the shaft / tube to collide with the spline forming tool, or the shaft / tube to collide with the fixed yoke assembly, causing the equipment to stop, with serious consequences. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, the utility model provides a double-station press for quickly calibrating the coaxiality of an intermediate shaft, which, in combination with a simple calibration tool, can realize rapid identification and calibration of the coaxiality deviation of the equipment, and is simple and convenient to operate.

[0004] In order to achieve the above purpose, a double-station press for quickly calibrating the coaxiality of the intermediate shaft is designed, which includes a frame, a downward pressing servo motor, and a press platform. The characteristics are: the lower part of the frame is connected to the press platform, the top of the frame is provided with a downward pressing servo motor, and the driving shaft of the downward pressing servo motor passes through the top of the frame and is connected with the upper calibration device; a coaxiality calibration device is provided on the press platform;

[0005] The coaxiality calibration device includes a calibration platform, a slide rail, a slide table, a spline position tooling, an assembly position tooling, a translation servo motor, a screw rod and a nut. The calibration platform is provided with a slide rail connected to the bottom of the slider, the top of the slider is connected to the slide table, the slide table is respectively provided with a spline position tooling and an assembly position tooling, the slide table located between the spline position tooling and the assembly position tooling is connected to one end of the nut, the other end of the nut is sleeved on the screw rod, one end of the screw rod is connected to the driving shaft of the translation servo motor through a coupling, and the other end of the screw rod is fixedly connected to the calibration platform through a screw rod fixed fork bracket.

[0006] The bottom of the spline position tooling is fixedly connected to the slide table through the spline position tooling flange, and a pressure sensor 1 is connected to the bottom of the spline position tooling.

[0007] The bottom of the assembly position tooling is fixedly connected to the slide table through the assembly position tooling flange, and the bottom of the assembly position tooling is connected to the second pressure sensor.

[0008] The structure of the spline position tooling is consistent with that of the assembly position tooling. The spline position tooling includes a lower marking rod, a combined tooling component, an assembly station base, and a locking tooling. The bottom of the assembly station base is connected to the spline position tooling flange, and the top of the assembly station base is embedded with a combined tooling component. The combined tooling component is connected to the lower marking rod by bolts, and the combined tooling component is locked to the assembly station base by the locking tooling.

[0009] The lower calibration rod is composed of a disc-shaped middle part connected to a cylindrical rod.

[0010] The translation servo motor is fixedly connected to the calibration platform via a motor connector.

[0011] A starting point limit block and an end point limit block are respectively arranged at both ends of the slide rail, and the starting point limit block and the end point limit block are fixedly connected to the calibration platform.

[0012] The nut is located at the rear side between the spline position tooling and the assembly position tooling.

[0013] The upper calibration device includes an upper calibration rod and a calibration rod mounting base. The driving shaft of the downward pressure servo motor passes through the top of the frame and is connected to one end of the calibration rod mounting base. The other end of the calibration rod mounting base is connected to the upper calibration rod.

[0014] The upper marking rod is composed of a cylindrical rod connected to the middle part of a rectangular panel.

[0015] Compared with the prior art, the utility model provides a double-station press for quickly calibrating the coaxiality of an intermediate shaft, and cooperates with a simple calibration tool to realize rapid identification and calibration of the coaxiality deviation of the equipment, which is simple and convenient to operate.

[0016] The utility model detects the coaxiality deviation of the spline position and the assembly position respectively through the upper and lower calibration rods. At the same time, the servo position of the spline position is taken as the 0 point position and the servo position of the assembly position is taken as the X point position. According to the measured deviation, the 0 point position is calibrated and the parameters of the X point position are adjusted to complete the rapid coaxiality calibration of the two workstations. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model.

[0018] Figure 2 It is a schematic diagram of the structure of the coaxiality calibration device in the utility model.

[0019] Figure 3 It is an exploded view of the spline position tooling and assembly position tooling structure.

[0020] Figure 4 Schematic diagram of the structure of the upper calibration rod.

[0021] Figure 5Schematic diagram of the structure of the lower calibration rod.

[0022] Figure 6 This is a schematic diagram of the spline position tooling calibration status. DETAILED DESCRIPTION

[0023] The utility model is further described below with reference to the accompanying drawings.

[0024] like Figures 1 to 5 As shown, the lower part of the frame 5 is connected to the press platform 1, and the top of the frame 5 is provided with a downward pressing servo motor 6, and the driving shaft of the downward pressing servo motor 6 passes through the top of the frame 5 and is connected to the upper calibration device 4; a coaxiality calibration device is provided on the press platform 1;

[0025] The coaxiality calibration device includes a calibration platform, a slide rail, a slide table, a spline position tooling, an assembly position tooling, a translation servo motor, a screw rod, and a nut. The calibration platform 3 is provided with a slide rail 7 connected to the bottom of the slider 15, and the top of the slider 15 is connected to the slide table 2. The slide table 2 is respectively provided with a spline position tooling 11 and an assembly position tooling 13. The slide table 2 located between the spline position tooling 11 and the assembly position tooling 13 is connected to one end of the nut 12, and the other end of the nut 12 is sleeved on the screw rod 21. One end of the screw rod 21 is connected to the driving shaft of the translation servo motor 8 through a coupling 9, and the other end of the screw rod 21 is fixedly connected to the calibration platform 3 through a screw rod fixed fork bracket 10.

[0026] The bottom of the spline position tooling 11 is fixedly connected to the slide 2 through the spline position tooling flange 18, and the pressure sensor 17 is connected to the bottom of the spline position tooling 11.

[0027] The bottom of the assembly position tooling 13 is fixedly connected to the slide 2 via the assembly position tooling flange 19 , and a pressure sensor 2 20 is connected to the bottom of the assembly position tooling 13 .

[0028] The spline position tooling 11 has the same structure as the assembly position tooling 13. The spline position tooling 11 includes a lower marking rod, a combined tooling component, an assembly station base, and a locking tooling. The bottom of the assembly station base 11-1 is connected to the spline position tooling flange 18, and the top of the assembly station base 11-1 is embedded with a combined tooling component 11-2. The combined tooling component 11-2 is connected to the lower marking rod 11-3 by bolts, and the combined tooling component 11-2 is locked to the assembly station base 11-1 by the locking tool 11-4.

[0029] The lower calibration rod 11-3 is composed of a disc-shaped middle part connected to a cylindrical rod.

[0030] The translation servo motor 8 is fixedly connected to the calibration platform 3 via a motor connector.

[0031] A starting point limit block 14 and an end point limit block 16 are respectively provided at both ends of the slide rail 7 , and the starting point limit block 14 and the end point limit block 16 are fixedly connected to the calibration platform 3 .

[0032] The nut 12 is located at the rear side between the spline position tooling 11 and the assembly position tooling 13 .

[0033] The upper calibration device 4 includes an upper calibration rod and a calibration rod mounting base. The driving shaft of the downward pressure servo motor 6 passes through the top of the frame 5 and is connected to one end of the calibration rod mounting base 4-1. The other end of the calibration rod mounting base 4-1 is connected to the upper calibration rod 4-2.

[0034] The upper calibration rod 4-2 is composed of a cylindrical rod connected to the middle part of a rectangular panel.

[0035] The lower calibration rod 11-3 is connected to the combined tooling component 11-2 by bolts. The combined tooling component 11-2 is a common component of the spline position tooling 11 and the assembly position tooling 13. The combined tooling component 11-2 is locked on the assembly station base 11-1 of the spline position tooling 11 and the assembly station base of the assembly position tooling 13 at different calibration positions by the locking tool 11-4.

[0036] The coaxiality deviation of the spline position tooling 11 and the assembly position tooling 13 is detected by the upper and lower calibration rods respectively. At the same time, the servo position of the spline position tooling 11 is taken as the 0 point, and the servo position of the assembly position tooling 13 is taken as the X point (the specific value is set according to the equipment requirements). According to the measurement deviation, the 0 point is calibrated, and the parameters of the X point are adjusted to complete the rapid calibration of the coaxiality of the two positions.

[0037] Specific implementation methods

[0038] The equipment automatically runs to the spline position tooling 11, and the upper calibration rod 4-2 is installed to the tooling installation position of the downward pressure servo motor 6 through the calibration rod installation base 4-1, and the lower calibration rod 11-3 is installed on the combined tooling component 11-2 of the spline position tooling 11;

[0039] The downward pressure servo motor 6 automatically descends to the standard position (such as Figure 6 As shown), to prevent collision, the gap between the upper and lower calibration rods is 5mm, and the left and right deviations of the two calibration rods are measured;

[0040] The equipment enters the HOME calibration interface and calibrates the 0 point according to the measured deviation, that is, the coaxiality calibration of the spline position tooling 11 is completed;

[0041] Return the translation servo motor 8 to its original position, install the lower calibration rod 11-3 on the assembly position tooling 13, and move the slide 2 to the assembly position under the control of the translation servo motor 8;

[0042] The downward pressure servo motor 6 automatically descends to the standard position. To prevent collision, the gap between the upper and lower standard rods is 5mm. The left and right deviations of the two standard rods are measured.

[0043] The device enters the parameter setting interface and adjusts the X point position according to the measured deviation, that is, the coaxiality calibration of the assembly position is completed.

[0044] The utility model can quickly identify the coaxiality deviation and calibration of equipment, the method is simple and easy to operate, and can be extended to the same type of equipment or provide reference.

Claims

1. A double-station press for quickly calibrating the coaxiality of an intermediate shaft, comprising a frame, a downward pressing servo motor, and a press platform, characterized in that: The lower part of the frame (5) is connected to the press platform (1), and a downward pressing servo motor (6) is provided on the top of the frame (5). The driving shaft of the downward pressing servo motor (6) passes through the top of the frame (5) and is connected to the upper calibration device (4); a coaxiality calibration device is provided on the press platform (1); The coaxiality calibration device comprises a calibration platform, a slide rail, a slide table, a spline position tooling, an assembly position tooling, a translation servo motor, a screw rod and a nut. The calibration platform (3) is provided with a slide rail (7) connected to the bottom of a slider (15), the top of the slider (15) is connected to the slide table (2), the slide table (2) is respectively provided with a spline position tooling (11) and an assembly position tooling (13), one end of the nut (12) is connected to the slide table (2) between the spline position tooling (11) and the assembly position tooling (13), the other end of the nut (12) is sleeved on the screw rod (21), one end of the screw rod (21) is connected to the driving shaft of the translation servo motor (8) through a coupling (9), and the other end of the screw rod (21) is fixedly connected to the calibration platform (3) through a screw rod fixing fork bracket (10).

2. A double-station press for quickly calibrating the coaxiality of an intermediate shaft according to claim 1, characterized in that: The bottom of the spline position tooling (11) is fixedly connected to the slide table (2) via a spline position tooling flange (18), and a pressure sensor 1 (17) is connected to the bottom of the spline position tooling (11).

3. A double-station press for quickly calibrating the coaxiality of an intermediate shaft according to claim 1, characterized in that: The bottom of the assembly position tooling (13) is fixedly connected to the slide (2) via an assembly position tooling flange (19), and a second pressure sensor (20) is connected to the bottom of the assembly position tooling (13).

4. A double-station press for quickly calibrating the coaxiality of an intermediate shaft according to claim 1, characterized in that: The spline position tooling (11) and the assembly position tooling (13) have the same structure. The spline position tooling (11) comprises a lower marking rod, a combined tooling component, an assembly station base, and a locking tooling. The bottom of the assembly station base (11-1) is connected to the spline position tooling flange (18). The top of the assembly station base (11-1) is embedded with a combined tooling component (11-2). The combined tooling component (11-2) is connected to the lower marking rod (11-3) by bolts. The combined tooling component (11-2) is locked to the assembly station base (11-1) by a locking tooling (11-4).

5. A double-station press for quickly calibrating the coaxiality of an intermediate shaft according to claim 4, characterized in that: The lower calibration rod (11-3) is composed of a disc-shaped middle part connected to a cylindrical rod.

6. A double-station press for quickly calibrating the coaxiality of an intermediate shaft according to claim 1, characterized in that: The translation servo motor (8) is fixedly connected to the calibration platform (3) via a motor connector.

7. A double-station press for quickly calibrating the coaxiality of an intermediate shaft according to claim 1, characterized in that: A starting point limit block (14) and an end point limit block (16) are respectively provided at both ends of the slide rail (7), and the starting point limit block (14) and the end point limit block (16) are fixedly connected to the calibration platform (3).

8. A double-station press for quickly calibrating the coaxiality of an intermediate shaft according to claim 1, characterized in that: The nut (12) is located at the rear side between the spline position tooling (11) and the assembly position tooling (13).

9. A double-station press for quickly calibrating the coaxiality of an intermediate shaft according to claim 1, characterized in that: The upper calibration device (4) comprises an upper calibration rod and a calibration rod mounting base. The drive shaft of the downward pressure servo motor (6) passes through the top of the frame (5) and is connected to one end of the calibration rod mounting base (4-1). The other end of the calibration rod mounting base (4-1) is connected to the upper calibration rod (4-2).

10. A double-station press for quickly calibrating the coaxiality of an intermediate shaft according to claim 9, characterized in that: The upper marking rod (4-2) is composed of a cylindrical rod connected to the middle part of a rectangular panel.

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