Cold heading forming device for motor suspension metal framework

Abstract

The invention discloses a cold heading forming device for a motor suspension metal framework, relates to the technical field of cold heading forming, and aims to solve the technical problems of low forming precision and single function. On the basis of external hydraulic pumping equipment, a planetary driving mechanism is matched, two output ends are arranged, a second-stage control shaft sleeve is pretreated through an annular bolt fastening assembly, so that a swing piston mechanism is subjected to inclination adjustment, and a forming mold A subjected to cold upsetting forming is subjected to annular sequential second-stage pressurization for further forming; according to the motor suspension metal framework high-precision forming method, the forming precision of the motor suspension metal framework is improved, emphasized pressurizing forming is conducted on one or more movable units of the forming die A, most of the cold heading deformation degree in the motor suspension metal framework is further formed in the mode, and high-precision forming treatment of the motor suspension metal framework is achieved in the mode. In this way, the functionality of the cold heading forming device is effectively improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cold upsetting forming, more particularly to a cold upsetting forming device for a motor suspension metal framework. BACKGROUND

[0002] Under the background of rapid development of new energy vehicle industry, the motor suspension metal framework, as a core bearing component connecting the motor and the vehicle body, needs to have high vibration resistance, high fatigue strength and integrated forming characteristics, and the cold upsetting forming process is the key to its processing. The current traditional cold upsetting equipment has many defects and cannot meet the demand of precise forming. The existing cold upsetting device adopts a single die cavity and a fixed driving structure, and can only complete simple upsetting of the framework main body. The side wing reinforcing ribs, connecting ears and other special-shaped parts need to be processed by multiple equipment in steps, and the pressure output cannot be adjusted as needed, resulting in insufficient metal filling of the special-shaped parts and size deviation. Step-by-step processing also easily produces positioning errors, affecting the overall coaxiality of the framework.

[0003] The driving and die linkage is poor, and the function is single. The driving mechanism and die of the traditional equipment lack flexible linkage adjustment structure, and can only realize single cold upsetting mode, which cannot adapt to the two-stage processing demand of "overall rough forming-local precise forming" of the framework, and frequent replacement of the die or driving components greatly reduces the production efficiency, and the die replacement easily introduces positioning deviation.

[0004] The die adjustment flexibility is low, and the adaptability is poor. The existing cold upsetting die is of an integral structure, and cannot be adjusted locally according to the forming demand of different regions of the framework. The replacement of the entire die is required for processing different specifications of the framework, which increases the equipment investment and production preparation time. The connection between the die and the driving mechanism lacks buffering and adaptation, and high-pressure upsetting easily causes die wear and edge collapse, shortening the service life.

[0005] There is a lack of partition pressurization control, and the forming quality is unstable. The cold upsetting pressure demand of different parts of the motor suspension framework is quite different, and the traditional equipment adopts uniform pressure output, which easily causes local excessive upsetting or insufficient filling, resulting in low product qualification rate and difficulty in meeting the high reliability requirement of new energy vehicle parts.

[0006] In view of the above technical defects of the prior art, there is an urgent need for a cold upsetting forming device for a motor suspension metal framework, which has double-mode forming capability, flexible die adjustment and can realize partition pressurization, solves the problems of low forming precision and single function, and improves product quality and production efficiency. Therefore, we propose a cold upsetting forming device for a motor suspension metal framework. SUMMARY

[0007] The purpose of the present application is to provide a cold upsetting forming device for a motor suspension metal framework to solve the technical problems of low forming precision and single function.

[0008] To solve the above technical problems, the application provides the following technical scheme: a cold heading forming device for a motor suspension metal framework, comprising a base; a indexing mechanism is arranged on the base; a plurality of cold heading systems are arranged on the indexing mechanism; a cold heading die is arranged at the forming end of the cold heading system; the internal gap of the cold heading die constitutes a forming cavity; a plurality of the forming cavities are distributed in a stepped gradient; an annular bolt fastening assembly is arranged at the side of the forming cavity; the cold heading system comprises a fixed shaft sleeve fixed to the end of the indexing mechanism; a connecting suction seat is arranged at the top of the fixed shaft sleeve; a control driving motor is arranged inside the connecting suction seat; a planetary drive mechanism is arranged inside the fixed shaft sleeve, and the planetary drive mechanism is connected with the control driving motor; a stepped control mechanism is arranged outside the fixed shaft sleeve and is engaged with the planetary drive mechanism; a secondary control shaft sleeve is rotatably arranged at the bottom of the fixed shaft sleeve; the secondary control shaft sleeve is connected with the planetary drive mechanism; a hydraulic force receiving seat is arranged at the output end of the planetary drive mechanism and is connected by a key; a swing piston mechanism is connected to the hydraulic force receiving seat by a ball joint; a forming die A is arranged at the output end of the swing piston mechanism; a forming die B is arranged at the bottom of the forming die A opposite to the side of the indexing mechanism.

[0009] The application is based on an external hydraulic pump for the device, and has two groups of output ends arranged in cooperation with the planetary drive mechanism, and the swing piston mechanism is inclined and adjusted by pretreating the secondary control shaft sleeve through the annular bolt fastening assembly, the forming die A after cold heading rough forming is further formed by annular sequential two-stage pressurization, the accuracy of forming the motor suspension metal framework is improved, and one or more movable units of the forming die A are highlighted and formed by pressurization, in this way, most of the cold heading deformation degree of the motor suspension metal framework is further formed, high-precision forming processing of the motor suspension metal framework is realized by the above-mentioned way, and the functionality of the cold heading forming device is effectively improved.

[0010] Preferably, at least one pump channel for hydraulic control is arranged at the side of the connecting suction seat.

[0011] Preferably, the planetary drive mechanism comprises a sun driving double-sided gear rotatably arranged in the fixed shaft sleeve; a driving planet carrier is rotatably arranged inside the sun driving double-sided gear; a plurality of planetary gears are arranged in an annular and equidistant manner on the driving planet carrier; a center driving gear is arranged at the middle end of the driving planet carrier; a key shaft is arranged inside the center driving gear and is connected with the control driving motor by a key.

[0012] Preferably, the stepped control mechanism comprises a primary driving motor and a driving control gear arranged at the output end of the primary driving motor and engaged with the sun driving double-sided gear.

[0013] Preferably, the secondary control shaft sleeve is connected with the driving planet carrier through bolt mounting; the secondary control shaft sleeve side is annularly and equidistantly distributed with several adjusting hydraulic cavities; the adjusting hydraulic cavity end is provided with a regulating control bolt relative to the outer surface of the secondary control shaft sleeve; and the adjusting hydraulic cavity end is provided with a regulating shaft wheel relative to the inner wall of the secondary control shaft sleeve.

[0014] Preferably, the regulating shaft wheel is movably inserted into the adjusting hydraulic cavity end; the regulating shaft wheel comprises a force bearing jacking shaft frame; the force bearing jacking shaft frame inner wall is provided with a swing cavity; the swing cavity two sides are expanded; the force bearing jacking shaft frame two sides are provided with stepped arc-shaped guide blocks relative to the swing cavity end; the swing cavity is provided with a swing shaft; the swing shaft end is movably provided with an auxiliary wheel in contact with the arc-shaped guide block; and the swing shaft is provided with two contact rolling wheels.

[0015] Preferably, the swing piston mechanism comprises a rotating ball seat; the rotating ball seat inner wall is annularly and equidistantly provided with several ball head connecting cavities with openings downward; the rotating ball seat shaft center is fixedly provided with a secondary connecting ball head connecting shaft; the secondary connecting ball head connecting shaft inner wall is provided with a primary connecting ball head connecting shaft; the secondary connecting ball head connecting shaft and the primary connecting ball head connecting shaft are connected through a ball cage; the primary connecting ball head connecting shaft and the key shaft are connected through a key; and the ball head connecting cavity is provided with a ball head connecting rod.

[0016] Preferably, the ball head connecting rod end is movably provided with a driving ball head shaft sleeve; the secondary control shaft sleeve inner wall is fixedly provided with a secondary hydraulic retaining wheel shaft relative to the rotating ball seat lower side; the driving ball head shaft sleeve bottom is provided with an extension shaft relative to the secondary hydraulic retaining wheel shaft inner setting; the extension shaft and the opposite face gap of the driving ball head shaft sleeve constitute a hydraulic secondary adjusting cavity; the secondary hydraulic retaining wheel shaft bottom is provided with a forming die A; the forming die A comprises a connecting forming seat; the connecting forming seat inner wall is provided with a limiting groove; the connecting forming seat is internally provided with several force bearing forming cold heading die cores; and the several force bearing forming cold heading die cores have a limiting movable lifting space through the limiting groove and the connecting forming seat.

[0017] Preferably, the upper surfaces of the several force bearing forming cold heading die cores are all provided with arc-shaped communication grooves; the first ends of the several communication grooves are connected to constitute an annular connecting groove; and the annular connecting groove inner wall is provided with an auxiliary limiting block fixedly connected with the extension shaft through limiting hook connection.

[0018] Compared with the prior art, the present application has the following beneficial effects: 1. The present application is based on external hydraulic pump to the device, with two groups of output end setting and through the annular bolt fastening assembly to the two-stage control shaft sleeve pretreatment causes the swing piston mechanism to tilt adjustment, to the cold heading coarse forming after the forming die A annular sequential two-stage supercharging further forming, to the motor suspension metal framework forming to improve accuracy, and one or more active units of the forming die A are highlighted by the way to further form the cold heading deformation of the motor suspension metal framework, through the above-mentioned way to realize the high-precision forming of the motor suspension metal framework, through the way to effectively improve the functionality of the cold heading forming device.

[0019] 2. The present application is based on the regulation and control of the driving motor and the hierarchical control mechanism to work together to form a control swing piston mechanism rotation or control two-stage control shaft sleeve rotation partition rotation structure, through the way to realize the switching of two kinds of operating state.

[0020] 3. The present application can rotate the control bolt by the annular bolt fastening assembly, rotate the different control bolts to different depths by pre-setting, and use the hydraulic liquid in the adjusting hydraulic chamber to push the different progress of the control shaft wheel to tilt the swing piston mechanism and adjust the required angle of inclination.

[0021] 4. The present application is based on the contact between the control shaft wheel and the swing piston mechanism, and is set by the arc-shaped guide block, so that the swing shaft is adapted to the required angle, so that the contact surface between the fitted rolling wheel and the swing piston mechanism is increased, and the tilt lifting or contact bearing effect is improved.

[0022] 5. The present application is based on the tilt adjustment of the rotating ball seat and the reciprocating piston movement of the several ball head connecting rods by the two-stage control shaft sleeve, and the rotation of the first connecting ball head connecting shaft and the second connecting ball head connecting shaft and the rotating ball seat as a whole is driven, so that the ball head connecting rod after rotating to any position is further pushed to realize the precision cold heading process.

[0023] 6. In the present application, the swing piston mechanism is pushed as a whole to cause the forming die A and the forming die B to achieve the basic cold heading die effect, and then the limiting groove provides effective space for the stress forming cold heading die core activity.

[0024] 7. The present application is based on the annular connecting groove setting, which causes the auxiliary limiting block and the extension shaft to form a rotating movable connection, provides the necessary activity space for the annular sequential two-stage supercharging forming, and avoids the motion interference. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 The overall three-dimensional structure of the present application is shown in the figure.

[0026] Figure 2 It is a side view structure schematic diagram of the cold upsetting system of the present application.

[0027] Figure 3 It is a sectional view structure schematic diagram of the cold upsetting system of the present application.

[0028] Figure 4 It is a front view structure schematic diagram of the cold upsetting system of the present application.

[0029] Figure 5 It is a front view structure schematic diagram of the connecting suction seat of the present application.

[0030] Figure 6 It is a front view structure schematic diagram of the cold upsetting system of the present application. Figure 5 It is a local enlarged structure schematic diagram of A in the present application.

[0031] Figure 7 It is a three-dimensional split structure schematic diagram of the planetary drive mechanism of the present application.

[0032] Figure 8 It is a sectional view structure schematic diagram of the regulating shaft wheel of the present application.

[0033] Figure 9 It is a connecting structure schematic diagram of the extension shaft and the communication groove of the present application.

[0034] Figure 10 It is a structure schematic diagram of a use state of the present application.

[0035] Figure 11 It is a structure schematic diagram of another use state of the present application.

[0036] Explanation of figure marks: 1. Base; 2. Indexing mechanism; 3. Cold heading system; 4. Ring bolt fastening assembly; 5. Fixed bushing; 6. Connecting suction seat; 7. Control drive motor; 8. Planetary drive mechanism; 9. Stage control mechanism; 10. Secondary control bushing; 11. Hydraulic force-bearing seat; 12. Swing piston mechanism; 13. Forming mold A; 601. Pump feed channel; 801. Solar drive double-sided gear; 802. Drive planetary carrier; 803. Planetary gear; 804. Center drive gear; 805. Key shaft; 901. Primary drive motor; 1001. Control bolt; 1002. Control wheel; 100 21. Lifting shaft frame; 10022. Swing cavity; 10023. Arc-shaped guide block; 10024. Swing shaft; 10025. Auxiliary wheel; 10026. Adhering rolling wheel; 1201. Rotating ball seat; 1202. Secondary connecting ball head connecting shaft; 1203. Primary connecting ball head connecting shaft; 1204. Ball head connecting rod; 1205. Drive ball head bushing; 1206. Secondary hydraulic retaining wheel shaft; 1207. Extension shaft; 12071. Auxiliary limiting block; 1301. Connecting forming seat; 1302. Limiting groove; 1303. Force-loaded forming cold heading mold core; 1304. Connecting groove. Detailed Implementation

[0037] like Figures 1 to 11 As shown, the present invention relates to a cold heading forming device for a motor suspension metal frame, comprising a base 1; an indexing mechanism 2 is provided on the base 1; a plurality of cold heading systems 3 are provided on the indexing mechanism 2; a cold heading mold is provided at the forming end of the cold heading system 3; the internal gap of the cold heading mold forms a forming cavity; the plurality of forming cavities are distributed in a stepped gradient; annular bolt fastening components 4 are respectively provided on the sides of the forming cavities; the cold heading system 3 includes a fixed bushing 5 fixed to the end of the indexing mechanism 2; a connecting suction seat 6 is provided on the top of the fixed bushing 5; and a control drive motor 7 is provided inside the connecting suction seat 6; the fixed bushing 5 contains... A planetary drive mechanism 8 is provided, and the planetary drive mechanism 8 is connected to a control drive motor 7; a graded control mechanism 9 is provided outside the fixed bushing 5 and meshes with the planetary drive mechanism 8; a secondary control bushing 10 is rotatably provided at the bottom of the fixed bushing 5; the secondary control bushing 10 is connected to the planetary drive mechanism 8; a hydraulic force-bearing seat 11 is keyed to the output end of the planetary drive mechanism 8; a swing piston mechanism 12 is ball-jointed inside the hydraulic force-bearing seat 11; a forming mold A13 is provided at the output end of the swing piston mechanism 12; a forming mold B is provided on the side of the indexing mechanism 2 relative to the bottom of the forming mold A13. This invention is based on an external hydraulic pump supply device, with the planetary drive mechanism 8 having two sets of output ends, and the secondary control bushing 10 is pre-treated by the annular bolt fastening assembly 4 to cause the swing piston mechanism 12 to tilt and adjust. Figure 10 The forming die A13, after cold heading rough forming, undergoes a two-stage, ring-shaped pressure process for further forming to improve the precision of the motor mount metal frame forming.Figure 11 The forming die A13 is used for highlighting pressurizing forming of one or more movable units, further forming of most of the cold upsetting deformation of the metal framework of the motor suspension, high-precision forming of the motor suspension metal framework is realized, and the functionality of the cold upsetting forming device is effectively improved.

[0038] In the embodiment of the present application, at least one pump channel 601 for hydraulic control is arranged on the side of the suction seat 6.

[0039] In the embodiment of the present application, the planetary drive mechanism 8 comprises a sun drive double-sided gear 801 arranged to rotate in the fixed shaft sleeve 5; the sun drive double-sided gear 801 is internally arranged to rotate with a drive planet carrier 802; a plurality of planet gears 803 are arranged in a ring shape at equal intervals on the drive planet carrier 802; a center drive gear 804 is arranged in the middle of the drive planet carrier 802; a key shaft 805 is arranged to be internally keyed connected to the center drive gear 804; and the key shaft 805 is connected with the control drive motor 7. The present application is based on the cooperative work of the control drive motor 7 and the hierarchical control mechanism 9, forming a control swing piston mechanism 12 rotation or control two-stage control shaft sleeve 10 rotation partition rotation structure, and through the above-mentioned way to realize the switching of two kinds of operating states.

[0040] In the embodiment of the present application, the hierarchical control mechanism 9 comprises a first-stage drive motor 901 and a drive control gear arranged at the output end of the first-stage drive motor 901 and meshed connected with the sun drive double-sided gear 801.

[0041] In the embodiment of the present application, the second-stage control shaft sleeve 10 is connected with the drive planet carrier 802 through bolt mounting; a plurality of adjusting hydraulic chambers are arranged in a ring shape at equal intervals on the side of the second-stage control shaft sleeve 10; a control control bolt 1001 is arranged at the end of the adjusting hydraulic chamber relative to the outer surface of the second-stage control shaft sleeve 10; and a control shaft wheel 1002 is arranged at the end of the adjusting hydraulic chamber relative to the inner wall of the second-stage control shaft sleeve 10. The control control bolt 1001 can be rotated and driven by the ring-shaped bolt fastening assembly 4, the control control bolt 1001 is rotated to different depths in advance, and the control shaft wheel 1002 is pushed to different progress by the hydraulic liquid in the adjusting hydraulic chamber to adjust the inclination of the swing piston mechanism 12 and the required adjustment of different inclination angles.

[0042] In the embodiment of the present application, the regulating shaft wheel 1002 is movably inserted into the end of the adjusting hydraulic cavity; the regulating shaft wheel 1002 comprises a force-bearing jacking shaft frame 10021; the inner wall of the force-bearing jacking shaft frame 10021 is provided with a swing cavity 10022; the swing cavity 10022 is expanded on both sides; the force-bearing jacking shaft frame 10021 is provided with stepped arc-shaped guide blocks 10023 on both sides opposite to the end of the swing cavity 10022; the swing cavity 10022 is provided with a swing shaft 10024 inside; the end of the swing shaft 10024 is movably provided with an auxiliary wheel 10025 in contact with the arc-shaped guide blocks 10023; and the swing shaft 10024 is provided with two contact rolling wheels 10026. The regulating shaft wheel 1002 is in contact with the swing piston mechanism 12, and the arc-shaped guide blocks 10023 are arranged, so that the swing shaft 10024 is adapted to the required angle, the contact rolling wheels 10026 increase the contact surface with the swing piston mechanism 12, and the tilting lifting or contact bearing effect is improved.

[0043] In the embodiment of the present application, the swing piston mechanism 12 comprises a rotating ball seat 1201; the inner wall of the rotating ball seat 1201 is annularly and equally spacedly provided with a plurality of ball head connecting cavities with openings facing downward; the rotating ball seat 1201 is fixedly provided with a secondary connecting ball head connecting shaft 1202 at the shaft center; the secondary connecting ball head connecting shaft 1202 is provided with a primary connecting ball head connecting shaft 1203 inside the wall; the secondary connecting ball head connecting shaft 1202 and the primary connecting ball head connecting shaft 1203 are connected by a ball cage; the primary connecting ball head connecting shaft 1203 and the key shaft 805 are connected by a key; and the ball head connecting cavity is provided with a ball head connecting rod 1204. The rotating ball seat 1201 is inclined and adjusted, the secondary control shaft sleeve 10 is rotated as a whole, the ball head connecting rod 1204 is reciprocatingly moved, the primary connecting ball head connecting shaft 1203 drives the secondary connecting ball head connecting shaft 1202 and the rotating ball seat 1201 to rotate as a whole, and the ball head connecting rod 1204 after rotating at any position is further pushed to realize precise cold upsetting treatment.

[0044] In the embodiment of the present application, the end of the ball head connecting rod 1204 is movably provided with a driving ball head sleeve 1205; the inner wall of the secondary control sleeve 10 is movably provided with a secondary hydraulic retaining wheel shaft 1206 below the relative rotating ball seat 1201; the bottom of the driving ball head sleeve 1205 is provided with an extension shaft 1207 relative to the secondary hydraulic retaining wheel shaft 1206; the extension shaft 1207 and the opposite surface of the driving ball head sleeve 1205 form a hydraulic secondary adjusting cavity with a gap; the bottom of the secondary hydraulic retaining wheel shaft 1206 is provided with a shaped die A13; the shaped die A13 comprises a connecting shaped seat 1301; the inner wall of the connecting shaped seat 1301 is provided with a limiting groove 1302; the connecting shaped seat 1301 is provided with a plurality of stress forming cold heading die cores 1303; and the plurality of stress forming cold heading die cores 1303 have a limiting movable lifting space between the limiting groove 1302 and the connecting shaped seat 1301. In the present application, the overall advancing swing piston mechanism 12 causes the shaped die A13 to achieve the basic cold heading die effect with the shaped die B, and then the limiting groove 1302 provides an effective space for the stress forming cold heading die core 1303 to move.

[0045] In the embodiment of the present application, the upper surfaces of the plurality of stress forming cold heading die cores 1303 are each provided with an arc-shaped communication groove 1304; the first ends of the plurality of communication grooves 1304 are connected to form an annular connection groove; and the inner wall of the annular connection groove is provided with an auxiliary limiting block 12071 which is fixedly connected with the extension shaft 1207. The present application provides necessary movement space for annular sequential secondary supercharging forming by setting an annular connection groove, which avoids movement interference.

[0046] Working principle: the present embodiment provides a cold heading forming device for a motor suspension metal framework, and the use steps are as follows: S100: equipment pre-adjustment; The forming die B is fixed on the specified station of the indexing mechanism 2, ensuring that it is aligned with the central axis of the forming die A13; the annular bolt fastening assembly 4 is initially in a relaxed state, not locking the secondary control shaft sleeve 10, leaving a control margin for subsequent adjustment of the control shaft wheel 1002; through the pump channel 601 connected to the suction seat 6, connect the external hydraulic pump supply equipment, set the partition pressure parameters of the overall rough forming stage and the fine forming stage; start the control drive motor 7 and the primary drive motor 901, through the meshing transmission of the sun drive double-sided gear 801 of the planetary drive mechanism 8 and the drive planetary carrier 802, test the rotation accuracy of the key shaft 805, ensure that the error meets the preset standard; rotate the annular bolt fastening assembly 4 to move the force lifting shaft frame 10021 of the control shaft wheel 1002 by the bolt extension, synchronously adjust the control bolt 1001 of the rotating secondary control shaft sleeve 10 to adjust the pressure of the hydraulic chamber, and double adapt the pre-adjusted angle; use the auxiliary wheel 10025 at the end of the swing shaft 10024 to slide along the arc-shaped guide block 10023, drive the rotating ball seat 1201 of the swing piston mechanism 12 to tilt to the rough forming adaptive angle, make the ball head connecting rod 1204 and the force forming cold heading die core 1303 preliminary alignment, and prepare for overall rough forming; after pre-adjustment, moderately tighten the annular bolt fastening assembly 4, temporarily fix the position of the control shaft wheel 1002 and the rotating ball seat 1201; S200: overall rough forming; Place the cold heading steel blank in the center of the forming die B cavity, start the indexing mechanism 2, drive the cold heading system 3 to rotate to the forming station, ensure that the blank is located in the middle of the forming die A13 and the forming die B; input high-pressure hydraulic oil into the hydraulic force seat 11 through the pump channel 601, push the swing piston mechanism 12 to descend as a whole; at this time, the rotating ball seat 1201 of the swing piston mechanism 12 remains in a horizontal state, the ball head connecting rod 1204 synchronously pushes the drive ball head shaft sleeve 1205 and the extension shaft 1207, drives the connecting forming seat 1301 of the forming die A13 to descend, and closes with the forming die B; use the cavity gap between the forming die A13 and the forming die B to apply overall pressure to the blank, so that the blank plastically deforms, and the center sleeve, radial arm and other basic contours of the motor suspension framework are formed; keep the pressure until the metal fills the cavity to avoid void defects; then, through hydraulic oil return, the forming die A13 is raised, completing a rough forming action; S300: annular sequential fine forming; After the overall rough forming is completed, loosen the annular bolt fastening assembly 4, drive the control shaft wheel 1002 to release the limit and be movable; start the first-stage drive motor 901 of the hierarchical control mechanism 9, drive the drive control gear to mesh with the sun drive double-sided gear 801, and at the same time, rotate the annular bolt fastening assembly 4, accurately push the control shaft wheel 1002 to move through the bolt extension, link the inclination angle adjustment of the swing piston mechanism 12 to the precise forming fitting angle, and synchronously fine-tune the control plug 1001 to calibrate the hydraulic cavity pressure; after the adjustment is completed, tighten the annular bolt fastening assembly 4, lock the position of the control shaft wheel 1002 and the rotating ball seat 1201, and avoid the deviation in the annular precise forming process; then the sun drive double-sided gear 801 drives the drive planet carrier 802 to rotate through the planetary gear 803, and further drives the second-stage control shaft sleeve 10 and the swing piston mechanism 12 to rotate synchronously; in the rotation process of the swing piston mechanism 12, the precise forming pressure is input to the hydraulic force receiving seat 11 through the pump feeding channel 601; at this time, the rotating ball seat 1201 maintains the preset inclination angle, and the ball head connecting rod 1204 is sequentially pushed down along the rotation to the corresponding position of the force forming cold upsetting die core 1303, and the side wing reinforcing rib, connecting ear and other special-shaped parts of the framework are sequentially upset; through the contact of the fitting rolling wheel 10026 and the rotating ball seat 1201, it is ensured that the pressure of the force forming cold upsetting die core 1303 is uniformly transmitted to the blank; every rotation of a station maintains the pressure to make the metal flow along the cavity, eliminates the stress concentration generated in the rough forming stage, and improves the fatigue strength of the framework.

[0047] S400: local key precise forming; According to the high stress area of the motor suspension framework, stop the rotation of the second-stage control shaft sleeve 10, loosen the annular bolt fastening assembly 4, and make the control shaft wheel 1002 return to the adjustable state; fine-tune the position of the cold upsetting system 3 through the indexing mechanism 2, at the same time, rotate the annular bolt fastening assembly 4, push the control shaft wheel 1002 to move accurately, adjust the inclination angle of the rotating ball seat 1201 of the swing piston mechanism 12 for the third time, make the corresponding force forming cold upsetting die core 1303 of the forming die A13 accurately align the key area, synchronously fine-tune the control plug 1001 to calibrate the pressure; after the angle is confirmed, tighten the annular bolt fastening assembly 4 again, lock the control shaft wheel 1002 and the rotating ball seat 1201, and guarantee the structural stability during the local high-pressure reinforcement; further increase the pressure of the corresponding adjusting hydraulic cavity through the control plug 1001, increase the inclination angle of the swing piston mechanism 12 pushed by the control shaft wheel 1002, and enhance the downward pressure of the ball head connecting rod 1204 in the area; input local high pressure through the pump feeding channel 601, and perform secondary upsetting on the key area to improve the metal density and strengthen the carrying capacity of the area.

[0048] S500: demolding; hydraulic oil return makes the forming mold A13 go up, and the material ejecting mechanism is started to eject the formed framework from the forming mold B; the framework is transported to the detection station through the indexing mechanism 2, and the dimensional accuracy and surface quality are checked, the qualified products enter the next process, and the unqualified products are re-adjusted for fine forming.

[0049] The embodiments of the present application are disclosed, but not limited to, the ordinary skilled in the art can easily understand the spirit of the present application according to the above embodiments, and make different inferences and changes, as long as they do not deviate from the spirit of the present application, which are within the protection scope of the present application.

Claims

1. A cold heading forming device for a motor suspension metal frame, characterized in that, Includes a base (1); an indexing mechanism (2) is provided on the base (1); a plurality of cold heading systems (3) are provided on the indexing mechanism (2); a cold heading mold is provided at the forming end of the cold heading system (3); the internal gap of the cold heading mold forms a forming cavity; the plurality of forming cavities are distributed in a stepped gradient; and ring bolt fastening components (4) are respectively provided on the sides of the forming cavities. The cold heading system (3) includes a fixed bushing (5) fixed to the end of the indexing mechanism (2); a connecting suction seat (6) is provided on the top of the fixed bushing (5); and a control drive motor (7) is provided inside the connecting suction seat (6). The fixed bushing (5) is provided with a planetary drive mechanism (8), and the planetary drive mechanism (8) is connected to the control drive motor (7); The fixed bushing (5) is provided with a graded control mechanism (9) that meshes with the planetary drive mechanism (8). The bottom of the fixed bushing (5) is rotatably provided with a secondary control bushing (10); the secondary control bushing (10) is connected to the planetary drive mechanism (8); The output end of the planetary drive mechanism (8) is keyed with a hydraulic force-bearing seat (11); the hydraulic force-bearing seat (11) is ball-connected with a swing piston mechanism (12); the output end of the swing piston mechanism (12) is provided with a forming mold A (13). The indexing mechanism (2) has a forming mold B on its side relative to the bottom of the forming mold A (13).

2. The cold heading forming device for a motor suspension metal frame according to claim 1, characterized in that, The connecting suction seat (6) is provided with at least one pump supply channel (601) for hydraulic control on one side.

3. The cold heading forming device for a motor suspension metal frame according to claim 2, characterized in that, The planetary drive mechanism (8) includes a sun-driven double-sided gear (801) rotatably arranged within the fixed bushing (5); a drive planet carrier (802) is rotatably arranged inside the sun-driven double-sided gear (801); a plurality of planetary gears (803) are arranged in a ring at equal intervals on the drive planet carrier (802); a central drive gear (804) is arranged at the middle end of the drive planet carrier (802); a key shaft (805) is keyed inside the central drive gear (804). The key shaft (805) is connected to the control drive motor (7).

4. The cold heading forming device for a motor suspension metal frame according to claim 3, characterized in that, The hierarchical control mechanism (9) includes a primary drive motor (901) and a drive control gear arranged at the output end of the primary drive motor (901) and meshing with the solar drive double-sided gear (801).

5. The cold heading forming device for a motor suspension metal frame according to claim 4, characterized in that, The secondary control bushing (10) is connected to the drive planetary carrier (802) by bolts; the secondary control bushing (10) has a plurality of adjustable hydraulic chambers distributed in an annular pattern on its side; the end of the adjustable hydraulic chamber is provided with an adjustment control bolt (1001) relative to the outer surface of the secondary control bushing (10); the end of the adjustable hydraulic chamber is provided with an adjustment wheel (1002) relative to the inner wall of the secondary control bushing (10).

6. The cold heading forming device for a motor suspension metal frame according to claim 5, characterized in that, The regulating shaft wheel (1002) is movably inserted into the end of the regulating hydraulic chamber; the regulating shaft wheel (1002) includes a force-bearing lifting shaft frame (10021); the inner wall of the force-bearing lifting shaft frame (10021) is provided with a swing cavity (10022); the swing cavity (10022) is expanded on both sides; and, the force-bearing lifting shaft frame (10021) is provided with stepped arc-shaped guide blocks (10023) on both sides opposite the end of the swing cavity (10022); a swing shaft (10024) is provided inside the swing cavity (10022); an auxiliary wheel (10025) is movably provided at the end of the swing shaft (10024) and in contact with the arc-shaped guide block (10023); two contacting rolling wheels (10026) are provided on the swing shaft (10024).

7. The cold heading forming device for a motor suspension metal frame according to claim 6, characterized in that, The swing piston mechanism (12) includes a rotating ball seat (1201); the inner wall of the rotating ball seat (1201) is provided with a plurality of ball head connecting cavities with their openings facing downwards in an annular pattern; a secondary connecting ball head connecting shaft (1202) is fixedly provided at the axis of the rotating ball seat (1201); a primary connecting ball head connecting shaft (1203) is provided on the inner wall of the secondary connecting ball head connecting shaft (1202); the secondary connecting ball head connecting shaft (1202) and the primary connecting ball head connecting shaft (1203) are connected by a ball cage; and the primary connecting ball head connecting shaft (1203) is connected to the key shaft (805) by a key. The ball joint connecting cavity is provided with a ball joint connecting rod (1204).

8. The cold heading forming device for a motor suspension metal frame according to claim 7, characterized in that, A drive ball joint bushing (1205) is movably provided at the end of the ball joint connecting rod (1204); a secondary hydraulic retaining wheel axle (1206) is fixedly provided on the inner wall of the secondary control bushing (10) relative to the lower part of the rotating ball seat (1201); an extension shaft (1207) is provided at the bottom of the drive ball joint bushing (1205) relative to the secondary hydraulic retaining wheel axle (1206). The clearance between the opposing surfaces of the extension shaft (1207) and the drive ball bushing (1205) forms a hydraulic two-stage adjustment chamber; The bottom of the secondary hydraulic retaining wheel shaft (1206) is provided with a forming mold A (13); The forming mold A (13) includes a connecting forming base (1301); the inner wall of the connecting forming base (1301) is provided with a limiting groove (1302); and a plurality of stress-forming cold heading mold cores (1303) are provided inside the connecting forming base (1301).

9. The cold heading forming device for a motor suspension metal frame according to claim 8, characterized in that, Several of the stress-forming cold heading die cores (1303) have a limited movable lifting space between them and the connecting forming seat (1301) through the limiting groove (1302).

10. The cold heading forming device for a motor suspension metal frame according to claim 9, characterized in that, The upper surface of each of the several cold heading die cores (1303) under stress is provided with an arc-shaped connecting groove (1304); the several connecting grooves (1304) are connected end to end to form an annular connecting groove; the inner wall of the annular connecting groove is provided with an auxiliary limiting block (12071) that is fixedly connected to the extension shaft (1207).

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