CN105057346B - Planetary gear train-groove cam type bar end hot-forming mechanism - Google Patents

Abstract

The invention discloses a planetary gear system-groove cam type bar material end thermal forming mechanism, which is characterized in that it includes a material placing platform and a bar clamping device for installing the heated bar material, and the two sides of the material setting platform are The thermoforming device is respectively provided, and the thermoforming device includes a support platform, a motor, a main shaft, a planet carrier body and a sun gear, the motor is fixed on the support platform, the main shaft is coaxially fixedly connected with the drive shaft of the motor, and the planet carrier body is coaxial with the main shaft Fixed connection, the sun gear is located in the planet carrier body and is fixedly connected with the support platform. There are two planetary gears symmetrically arranged along the sun gear in the planet carrier body, and the planet gears are meshed with the sun gear. Each planet wheel is connected to the planet carrier body There are grooved cam mechanisms between them, and each grooved cam mechanism is equipped with a forming tool; the advantage is that the end of the heated bar is extruded and deformed to form a specific shape, which is a cross-wedge rolling without material The head rolling provides high-quality original bar, and has high material utilization rate and high production efficiency, and the structure of the whole mechanism is relatively simple.

Description

A planetary gear system-groove cam type bar end thermoforming mechanism

technical field

The present invention relates to the hot forming mechanism of the end of the bar in the field of plastic forming and mechanical processing, in particular to a planetary gear system-groove cam type bar end thermoforming mechanism for processing the end of the heated bar into a specific shape. forming mechanism.

Background technique

During the cross wedge rolling forming process, the irregular flow of the metal will cause concavities to appear at both ends of the rolled piece when it is finally formed, and the concavities must be cut off as waste heads, which leads to the general yield rate of the cross wedge rolling process. Below 85%. The original billet of the rolled piece is usually a cylindrical rod. Changing the shape of the end of the bar, such as processing the end of the bar into a conical, frustum-shaped, arc-shaped, etc., can greatly improve the utilization rate of the rolled material. It is currently the most effective and most versatile process for realizing headless cross wedge rolling. However, in actual production, the end shape of the bar is generally processed by cutting or forging, and the waste still exists during cutting, and the production efficiency of forging is relatively low, so the current methods cannot meet the production requirements well. And the material waste is bigger.

Contents of the invention

The technical problem to be solved by the present invention is to provide a planetary gear system with high material utilization rate, high production efficiency and relatively simple structure-a grooved cam type bar end thermoforming mechanism.

The technical solution adopted by the present invention to solve the above technical problems is: a planetary gear system-groove cam type bar end thermoforming mechanism, including a material placement platform and a bar clamping device for installing heated bars , the two sides of the material placing platform are respectively provided with thermoforming devices with the same structure for processing the shape of the end of the heated bar, and the thermoforming devices include a support platform, a motor, a main shaft, a planetary carrier body and The sun gear, the motor is fixed on the support platform, the main shaft is coaxially fixedly connected with the drive shaft of the motor, the planet carrier is coaxially fixedly connected with the main shaft, and The sun gear is located in the planetary carrier body and is fixedly connected with the support platform. Two planetary gears arranged symmetrically along the sun gear are pivoted in the planetary carrier body. The planetary gears meshed with the sun gear, a grooved cam mechanism is arranged between each of the planetary gears and the planet carrier body, and two grooved cam mechanisms are arranged symmetrically along the main axis, Each of the grooved cam mechanisms is provided with a forming cutter.

The grooved cam mechanism includes a connecting frame and a grooved cam, and the planetary shaft is coaxially fixed on the planetary wheel, and the planetary shaft is connected to the planetary carrier body and its end protrudes from the The above-mentioned planet carrier body, the grooved cam is located on the outer side of the planet carrier body and is fixedly connected with the planet shaft, and the end surface of the planet carrier body facing the groove cam is fixedly provided with The radially extending slideway, the slider is fixedly arranged on the connecting frame, and the slider is radially slidably matched with the slideway, the roller is connected to the axis of the connecting frame, and the groove A groove is provided on the end surface of the grooved cam towards the connecting frame, the roller is located in the groove and rollingly fits with the groove, and the forming tool is fixedly connected with the connecting frame .

The forming tool is disc-shaped, and the shape of the peripheral surface of the forming tool is the same as the shape to be processed at the end of the bar.

The upper end of the material placement platform is provided with a concave lower V-shaped groove for horizontally placing heated bars, and the bar clamping device includes a pressing plate and a hydraulic cylinder, and the pressing plate is located on the Above the material placement platform, the lower end surface of the pressure plate is provided with a concave upper V-shaped groove corresponding to the lower V-shaped groove, and the hydraulic cylinder is fixed on the material placement platform. Above, the drive shaft of the hydraulic cylinder is fixedly connected with the press plate, and is used to drive the press plate to move up and down.

A pair of feeding guide rails is fixedly arranged between the material placing platform and the ground, and the pair of feeding guide rails is perpendicular to the axial direction of the bar. The pair of feeding guide rails includes a feeding guide rail and a feeding slider. The guide rail is fixed on the ground, and the feeding slider is fixedly connected to the bottom surface of the feeding platform, and the feeding slider is horizontally slidably matched with the feeding guide rail; the feeding platform can be adjusted through the feeding guide rail pair The position on the feeding guide rail realizes the feeding and unloading of the bar. When the axis of the bar coincides with the axis of the main shaft, the pressure plate moves downward to compress the bar under the drive of the hydraulic cylinder. After the processing is completed, the pressure plate Remove the bar to loosen it.

A distance-adjustable guide rail pair is fixedly arranged between one of the support platforms and the ground, and the distance-adjustable guide rail pair is arranged along the axial direction of the bar, and the distance-adjustable guide rail pair includes a distance-adjustable guide rail and a distance-adjustable slider , the distance-adjusting guide rail is fixed on the ground, the distance-adjusting slider is fixedly connected to the bottom surface of the support platform, and the distance-adjusting slider and the distance-adjusting guide rail are horizontally slidably matched, the The above-mentioned distance-adjusting slider slides along the axial direction of the bar; the position of one of the supporting platforms on the distance-adjusting guide rail can be adjusted through the distance-adjusting guide rail pair, so as to realize the processing of bars of different lengths.

The gear ratio between the sun gear and the planet gear is 1:7 or 1:8.

Compared with the prior art, the advantage of the present invention is that the thermoforming device used to process the heated bar end shape in this mechanism adopts the combined transmission of the planetary gear train and the grooved cam mechanism, and the grooved cam is opposite to the planet carrier. When the body rotates, it drives the forming tool to move radially, so that the uniform rotation of the planetary carrier body is transformed into a radial step-by-step feed while the forming tool rotates around the heated bar, so that the end of the heated bar is extruded After deformation, it forms a specific shape, such as conical, truncated cone, arc, etc., to provide high-quality original bar for cross-wedge rolling without head, and has high material utilization rate and high production efficiency. The structure of the whole mechanism is also simpler.

Description of drawings

FIG. 1 is a schematic structural view of Embodiment 1 of the present invention;

Figure 2 is a schematic structural view of the thermoforming device in Embodiment 1 of the present invention;

Fig. 3 is a schematic front view of the grooved cam mechanism in Embodiment 1 of the present invention;

Fig. 4 is a schematic diagram of the cooperation of the material placement platform, the pressing plate and the bar in the first embodiment of the present invention;

FIG. 5 is a schematic structural diagram of Embodiment 2 of the present invention;

FIG. 6 is a schematic structural diagram of Embodiment 3 of the present invention;

Fig. 7 is a schematic structural diagram of a distance-adjustable guide rail pair according to Embodiment 3 of the present invention;

FIG. 8 is a schematic structural diagram of Embodiment 4 of the present invention.

detailed description

The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

Embodiment 1: As shown in the figure, a planetary gear system-groove cam type bar end thermoforming mechanism includes a material placement platform 1 and a bar clamping device for installing a heated bar 100, The material platform 1 is fixed on the ground, and the upper end of the material setting platform 1 is provided with a concave lower V-shaped groove 11 for horizontally placing the heated bar 100. The bar clamping device includes a pressing plate 2 and a hydraulic cylinder 3, and the pressing plate 2. Located above the material placement platform 1, the lower end surface of the pressure plate 2 is provided with an upper V-shaped groove 21 that is concave and corresponding to the lower V-shaped groove 11. The hydraulic cylinder 3 is fixed on the material placement platform 1. The hydraulic cylinder The driving shaft of 3 is fixedly connected with the pressing plate 2, which is used to drive the pressing plate 2 to move up and down. The two sides of the material placing platform 1 are respectively equipped with thermoforming devices with the same structure for processing the shape of the end of the heated bar. Including support platform 4, motor 5, main shaft 6, planet carrier body 7 and sun gear 71, support platform 4 is fixed, motor 5 is fixed on support platform 4, main shaft 6 is coaxial with the drive shaft of motor 5 through a coupling Fixed connection, the planet carrier body 7 is fixedly connected coaxially with the main shaft 6, the sun gear 71 is located in the planet carrier body 7, the sun gear 71 is fixedly connected with the support platform 4, and the planet carrier body 7 is provided with two symmetrically arranged along the sun gear 71 The planetary gear 72, the planetary gear 72 is coaxially fixed with a planetary shaft 73, the planetary shaft 73 is connected in the planetary carrier body 7 and the end extends out of the planetary carrier body 7, the planetary wheel 72 is meshed with the sun gear 71, the sun The gear ratio between the wheel 71 and the planetary gear 72 is 1:7 or 1:8, and a grooved cam mechanism is arranged between each planetary shaft 73 and the planet carrier body 7, and the two grooved cam mechanisms are arranged symmetrically along the main shaft 6, Each groove cam mechanism is provided with a forming cutter 8;

The grooved cam mechanism includes a connecting frame 9 and a grooved cam 91. The grooved cam 91 is located on the outer side of the planetary carrier body 7 and is fixedly connected with the planetary shaft 73. The end surface of the planetary carrier body 7 facing the grooved cam 91 is fixedly provided with The extended slideway 92, the connecting frame 9 is fixedly provided with a slider 93, the sliding block 93 and the slideway 92 radially slide and cooperate, the upper axis of the connecting frame 9 is connected with a roller 94, and the grooved cam 91 faces in the end surface of the connecting frame 9 A groove 95 is provided, and the roller 94 is located in the groove 95 and rolls with the groove 95. The forming tool 8 is fixedly connected with the connecting frame 9. The forming tool 8 is disc-shaped, and the shape of the circumferential surface of the forming tool 8 is consistent with the bar The shapes to be machined at the ends of 100 are the same.

Embodiment 2: As shown in the figure, a planetary gear train-groove cam type bar end thermoforming mechanism includes a material placement platform 1 and a bar clamping device for installing a heated bar 100, and the A pair of feeding guide rails is fixedly arranged between the material platform 1 and the ground. The pair of feeding guide rails is perpendicular to the axial direction of the bar 100. The pair of feeding guide rails includes a feeding guide rail 12 and a feeding slider 13. The feeding guide rail 12 is fixed on the ground. The block 13 is fixedly connected to the bottom surface of the feeding platform 1, and the feeding slider 13 is horizontally slidably matched with the feeding guide rail 12. The upper end of the feeding platform 1 is provided with a concave lower V-shaped for horizontally placing the heated bar 100. Groove 11, the bar clamping device includes a pressure plate 2 and a hydraulic cylinder 3, the pressure plate 2 is located above the material placement platform 1, and the lower end surface of the pressure plate 2 is provided with an upper V that is concave and corresponding to the lower V-shaped groove 11. Groove 21, hydraulic cylinder 3 is fixed on the material placement platform 1, the drive shaft of hydraulic cylinder 3 is fixedly connected with the pressing plate 2, and is used to drive the pressing plate 2 to move up and down. The thermoforming device for processing the shape of the heated bar end. The thermoforming device includes a support platform 4, a motor 5, a spindle 6, a planet carrier body 7 and a sun gear 71. The support platform 4 is fixed, and the motor 5 is fixed on the support platform. 4, the main shaft 6 is coaxially fixedly connected with the drive shaft of the motor 5 through a coupling, the planet carrier body 7 is coaxially fixedly connected with the main shaft 6, the sun gear 71 is located in the planet carrier body 7, and the sun gear 71 is fixed to the support platform 4 connection, the planet carrier body 7 is provided with two planetary gears 72 symmetrically arranged along the sun gear 71, and the planetary shaft 73 is coaxially fixed on the planetary wheel 72, and the planetary shaft 73 is axially connected in the planetary carrier body 7 and the end extends Out of the planetary carrier body 7, the planetary gear 72 is meshed with the sun gear 71, the gear ratio of the sun gear 71 and the planetary wheel 72 is 1:7 or 1:8, and each planetary shaft 73 and the planetary carrier body 7 are provided with Grooved cam mechanism, two grooved cam mechanisms are arranged symmetrically along the main shaft 6, and each grooved cam mechanism is provided with a forming tool 8;

The grooved cam mechanism includes a connecting frame 9 and a grooved cam 91. The grooved cam 91 is located on the outer side of the planetary carrier body 7 and is fixedly connected with the planetary shaft 73. The end surface of the planetary carrier body 7 facing the grooved cam 91 is fixedly provided with The extended slideway 92, the connecting frame 9 is fixedly provided with a slider 93, the sliding block 93 and the slideway 92 radially slide and cooperate, the upper axis of the connecting frame 9 is connected with a roller 94, and the grooved cam 91 faces in the end surface of the connecting frame 9 A groove 95 is provided, and the roller 94 is located in the groove 95 and rolls with the groove 95. The forming tool 8 is fixedly connected with the connecting frame 9. The forming tool 8 is disc-shaped, and the shape of the circumferential surface of the forming tool 8 is consistent with the bar The shapes to be machined at the ends of 100 are the same.

Embodiment 3: As shown in the figure, a planetary gear system-groove cam type bar end thermoforming mechanism includes a material placement platform 1 and a bar clamping device for installing a heated bar 100, and the The material platform 1 is fixed on the ground, and the upper end of the material setting platform 1 is provided with a concave lower V-shaped groove 11 for horizontally placing the heated bar 100. The bar clamping device includes a pressing plate 2 and a hydraulic cylinder 3, and the pressing plate 2. Located above the material placement platform 1, the lower end surface of the pressure plate 2 is provided with an upper V-shaped groove 21 that is concave and corresponding to the lower V-shaped groove 11. The hydraulic cylinder 3 is fixed on the material placement platform 1. The hydraulic cylinder The driving shaft of 3 is fixedly connected with the pressing plate 2, which is used to drive the pressing plate 2 to move up and down. The two sides of the material placing platform 1 are respectively equipped with thermoforming devices with the same structure for processing the shape of the end of the heated bar. Including support platform 4, motor 5, main shaft 6, planet carrier body 7 and sun gear 71, motor 5 is fixed on support platform 4, main shaft 6 is coaxially fixedly connected with the drive shaft of motor 5 through coupling, planet carrier body 7 It is coaxially fixedly connected with the main shaft 6, the sun gear 71 is located in the planet carrier body 7, the sun gear 71 is fixedly connected with the supporting platform 4, and the planet carrier body 7 is provided with two planetary gears 72 arranged symmetrically along the sun gear 71, and the planetary gear 72 is coaxially fixedly provided with a planetary shaft 73, the planetary shaft 73 is pivoted in the planetary carrier body 7 and the end extends out of the planetary carrier body 7, the planetary gear 72 is meshed with the sun gear 71, and the sun gear 71 and the planetary gear 72 The gear ratio is 1:7 or 1:8. A grooved cam mechanism is arranged between each planetary shaft 73 and the planet carrier body 7. Two grooved cam mechanisms are arranged symmetrically along the main shaft 6. Each grooved cam mechanism All are provided with forming cutter 8;

The grooved cam mechanism includes a connecting frame 9 and a grooved cam 91. The grooved cam 91 is located on the outer side of the planetary carrier body 7 and is fixedly connected with the planetary shaft 73. The end surface of the planetary carrier body 7 facing the grooved cam 91 is fixedly provided with The extended slideway 92, the connecting frame 9 is fixedly provided with a slider 93, the sliding block 93 and the slideway 92 radially slide and cooperate, the upper axis of the connecting frame 9 is connected with a roller 94, and the grooved cam 91 faces in the end surface of the connecting frame 9 A groove 95 is provided, and the roller 94 is located in the groove 95 and rolls with the groove 95. The forming tool 8 is fixedly connected with the connecting frame 9. The forming tool 8 is disc-shaped, and the shape of the circumferential surface of the forming tool 8 is consistent with the bar The shape to be processed at the end of 100 is the same; in the two thermoforming devices arranged on both sides of the material placement platform 1, one of the support platforms 4 is fixed, and the other support platform 4 is fixed with a distance-adjustable guide rail between the ground A pair, the distance-adjustable guide rail pair is arranged along the axial direction of the bar 100, the distance-adjustable guide rail pair includes a distance-adjustable guide rail 41 and a distance-adjustable slider 42, the distance-adjustable guide rail 41 is fixed on the ground, and the distance-adjustable slider 42 is fixedly connected to the support platform 4, the distance-adjusting slider 42 is horizontally slidingly matched with the distance-adjusting guide rail 41, and the distance-adjusting slider 42 slides along the axial direction of the bar 100.

Embodiment 4: As shown in the figure, a planetary gear train-groove cam type bar end thermoforming mechanism includes a material placement platform 1 and a bar clamping device for installing a heated bar 100, and the A pair of feeding guide rails is fixedly arranged between the material platform 1 and the ground. The pair of feeding guide rails is perpendicular to the axial direction of the bar 100. The pair of feeding guide rails includes a feeding guide rail 12 and a feeding slider 13. The feeding guide rail 12 is fixed on the ground. The block 13 is fixedly connected to the bottom surface of the feeding platform 1, and the feeding slider 13 is horizontally slidably matched with the feeding guide rail 12. The upper end of the feeding platform 1 is provided with a concave lower V-shaped for horizontally placing the heated bar 100. Groove 11, the bar clamping device includes a pressure plate 2 and a hydraulic cylinder 3, the pressure plate 2 is located above the material placement platform 1, and the lower end surface of the pressure plate 2 is provided with an upper V that is concave and corresponding to the lower V-shaped groove 11. Groove 21, hydraulic cylinder 3 is fixed on the material placement platform 1, the drive shaft of hydraulic cylinder 3 is fixedly connected with the pressing plate 2, and is used to drive the pressing plate 2 to move up and down. A thermoforming device for processing the shape of the heated bar end. The thermoforming device includes a support platform 4, a motor 5, a main shaft 6, a planetary carrier body 7 and a sun gear 71. The motor 5 is fixed on the support platform 4, and the main shaft 6 is connected through a joint. The shaft device is fixedly connected coaxially with the drive shaft of the motor 5, the planet carrier body 7 is fixedly connected coaxially with the main shaft 6, the sun gear 71 is located in the planet carrier body 7, the sun gear 71 is fixedly connected with the support platform 4, and the planet carrier body 7 Two planetary gears 72 arranged symmetrically along the sun gear 71 are provided. The planetary shafts 73 are coaxially fixed on the planetary gears 72. The planetary shafts 73 are pivotally connected to the planetary carrier body 7 and the ends extend out from the planetary carrier body 7. The gear 72 meshes with the sun gear 71, the gear ratio between the sun gear 71 and the planet gear 72 is 1:7 or 1:8, and a grooved cam mechanism is arranged between each planet shaft 73 and the planet carrier body 7, two The grooved cam mechanism is arranged symmetrically along the main shaft 6, and each grooved cam mechanism is provided with a forming tool 8;

The grooved cam mechanism includes a connecting frame 9 and a grooved cam 91. The grooved cam 91 is located on the outer side of the planetary carrier body 7 and is fixedly connected with the planetary shaft 73. The end surface of the planetary carrier body 7 facing the grooved cam 91 is fixedly provided with The extended slideway 92, the connecting frame 9 is fixedly provided with a slider 93, the sliding block 93 and the slideway 92 radially slide and cooperate, the upper axis of the connecting frame 9 is connected with a roller 94, and the grooved cam 91 faces in the end surface of the connecting frame 9 A groove 95 is provided, and the roller 94 is located in the groove 95 and rolls with the groove 95. The forming tool 8 is fixedly connected with the connecting frame 9. The forming tool 8 is disc-shaped, and the shape of the circumferential surface of the forming tool 8 is consistent with the bar The shape to be processed at the end of 100 is the same; in the two thermoforming devices arranged on both sides of the material placement platform 1, one of the support platforms 4 is fixed, and the other support platform 4 is fixed with a distance-adjustable guide rail between the ground A pair, the distance-adjustable guide rail pair is arranged along the axial direction of the bar 100, the distance-adjustable guide rail pair includes a distance-adjustable guide rail 41 and a distance-adjustable slider 42, the distance-adjustable guide rail 41 is fixed on the ground, and the distance-adjustable slider 42 is fixedly connected to the support platform 4, the distance-adjusting slider 42 is horizontally slidingly matched with the distance-adjusting guide rail 41, and the distance-adjusting slider 42 slides along the axial direction of the bar 100.

Claims (7)

1. A planetary gear system-groove cam type bar stock end thermoforming mechanism, characterized in that it includes a stock platform and a bar clamping device for installing heated bars, the stock platform Both sides are respectively equipped with thermoforming devices with the same structure for processing the shape of the heated bar end. On the support platform, the main shaft is coaxially fixedly connected with the drive shaft of the motor, the planet carrier is coaxially fixedly connected with the main shaft, and the sun gear is located on the The planet carrier body is fixedly connected with the support platform, and two planetary gears arranged symmetrically along the sun gear are pivoted in the planet carrier body, and the planet gears are meshed with the sun gear A grooved cam mechanism is arranged between each of the planetary wheels and the planet carrier body, and the two grooved cam mechanisms are arranged symmetrically along the main axis, and each of the grooved cam mechanisms The mechanism is provided with forming cutters. 2. A planetary gear train as claimed in claim 1 - a grooved cam type bar end thermoforming mechanism, characterized in that said grooved cam mechanism includes a connecting frame and a grooved cam, and said planetary gear A planetary shaft is coaxially fixed on the upper side, the planetary shaft is pivotally connected to the planetary carrier body and its end protrudes from the planetary carrier body, and the grooved cam is located on the planetary carrier body The outer side is fixedly connected with the planet shaft, the end surface of the planet carrier body facing the grooved cam is fixedly provided with a slideway extending radially, and the connecting frame is fixedly provided with a slider, so The slider is radially slidably matched with the slideway, the connecting frame is pivotally connected with a roller, and the grooved cam is provided with a groove on the end face of the connecting frame, and the roller Located in the groove and rollingly matched with the groove, the forming tool is fixedly connected with the connecting frame. 3. A planetary gear train-groove cam type bar end thermal forming mechanism as claimed in claim 1, characterized in that the forming tool is disc-shaped, and the shape of the peripheral surface of the forming tool is It is the same shape as the end of the bar to be machined. 4. A planetary gear system-groove cam type bar end thermoforming mechanism as claimed in claim 1, characterized in that the upper end of the material placement platform is provided with a concave for horizontally placed heated The lower V-shaped groove of the bar, the bar clamping device includes a pressure plate and a hydraulic cylinder, the pressure plate is located above the material placement platform, and the lower end surface of the pressure plate is provided with a concave and The upper V-shaped groove corresponding to the lower V-shaped groove, the hydraulic cylinder is fixed on the material placement platform, and the drive shaft of the hydraulic cylinder is fixedly connected with the pressure plate for Drive the pressing plate to move up and down. 5. A planetary gear train-groove cam type bar end thermoforming mechanism as claimed in claim 1, characterized in that a pair of feeding guide rails is fixedly arranged between the said loading platform and the ground, and said The pair of feeding guide rails is perpendicular to the axial direction of the bar, and the pair of feeding guide rails includes a feeding guide rail and a feeding slider. The described feeding guide rail is fixed on the ground, and the described feeding slider is fixedly connected to the On the bottom surface of the platform, the feeding slider is horizontally slidingly matched with the feeding guide rail. 6. A planetary gear train-groove cam type bar end thermoforming mechanism as claimed in claim 1 or 5, characterized in that a distance-adjustable guide rail pair is fixedly arranged between one of the support platforms and the ground , the distance-adjustable guide rail pair is arranged along the axial direction of the bar stock, the described distance-adjustable guide rail pair includes a distance-adjustable guide rail and a distance-adjustable slider, the described distance-adjustable guide rail is fixed on the ground, and the described distance-adjustable slide The block is fixedly connected to the bottom surface of the support platform, and the distance-adjusting slider is horizontally slidably matched with the described distance-adjusting guide rail, and the described distance-adjusting slider slides along the axial direction of the bar. 7. A planetary gear train-grooved cam type bar end thermoforming mechanism according to claim 1, characterized in that the gear ratio of the sun gear to the planet gear is 1:7 or 1 :8.