Step-by-step hot die forging device for driving gear

Abstract

The invention discloses a step-by-step hot die forging device for a driving gear, and relates to the technical field of gear forging. The forging press comprises a forging press body, and a forging and pressing mechanism and a cleaning mechanism are arranged in the forging press body; the forging and pressing mechanism comprises a forging and pressing base arranged on the surface of the forging and pressing machine body, a gear mold is fixedly installed at the top of the forging and pressing base, when the metal blank is forged and pressed through the arranged forging and pressing mechanism, the rebound problem of the forged and pressed metal blank can be detected in real time, and under the condition that no rebound exists, the next-stage forging and pressing is directly carried out or carried out. The forging and pressing efficiency can be effectively improved, meanwhile, certain problems of the metal blank caused by excessive forging and pressing of the metal blank are avoided, meanwhile, if it is detected that the metal blank rebounds, forging and pressing in the step can be conducted again in time, and therefore it is guaranteed that the shape and size of the metal blank at each station are more accurate, and the product quality is improved. And the situation that the shape and the size do not meet the requirements due to overlarge springback is avoided, and the forming precision is improved.

Description

Technical Field

[0001] The invention relates to the technical field of gear forging equipment, and in particular to a step-by-step hot die forging device for a driving gear. Background Art

[0002] Gears are common transmission components used in a wide variety of mechanical equipment. Common gear machining methods include chip cutting and forging. Forging, due to its high efficiency, allows for rapid batch production of gears. Hot die forging is a precision forging method in which a metal blank is heated to a temperature above the material's recrystallization temperature and then formed into the shape and size of the forged part using a die. Hot die forging can produce gear blanks with a high degree of finish from raw material.

[0003] The patent application number is CN202211158027.4, which discloses a multi-station hot die forging press for spiral bevel gears. The press belongs to the technical field of mechanical processing equipment. The multi-station hot die forging press for spiral bevel gears includes a bracket and a forging mechanism, and further includes: a carrier plate with a leak hole; a turntable pivotally connected to the carrier plate, the turntable having a plurality of circumferentially distributed die holes, each of which can be connected to the leak hole; and a collection mechanism including a connecting plate, a screw rod, a slide rail, and a tray. The connecting plate is connected to the bracket, the screw rod and the slide rail are vertically arranged on the connecting plate, the tray has a sliding hole and a threaded hole, the sliding hole is slidably connected to the slide rail, the threaded hole is threadedly connected to the screw rod, the tray is arranged below the leak hole, and the screw rod is connected to a first power device. The multi-station hot die forging press for spiral bevel gears of the present invention can stack the processed and formed gear blanks into stacks, thereby facilitating the transportation of the processed and formed gear blanks and preventing the gear blanks from bumping and deforming, which would affect the accuracy of the gear blanks.

[0004] This patent and the prior art have the following technical problems in actual use: When a multi-station hot die forging press is forging, the metal blank is placed in the die for forging. Due to the material of the metal blank, rebound problems may occur after forging. Most forging presses find it difficult to detect the rebound of the forged gears after each stage of forging is completed, which may cause some gears to be damaged due to rebound problems during the next stage of forging. Summary of the Invention

[0005] The purpose of the present invention is to solve the above problems and provide a step-by-step hot die forging device for a driving gear.

[0006] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions: A step-by-step hot die forging device for a driving gear comprises a forging machine body, wherein a forging mechanism and a cleaning mechanism are arranged inside the forging machine body; The forging mechanism includes a forging seat arranged on the surface of the forging machine body, a gear die is fixedly installed on the top of the forging seat, and at least six groups of gear dies are provided according to the processing progress. A connecting seat is provided above the forging seat, a forging cylinder is provided above the forging seat, and a detection disk is provided below the forging cylinder. A sliding rod is fixedly installed on the top of the detection disk, and the sliding rod passes through and extends to the interior of the forging cylinder. The detection disk is slidably connected to the forging cylinder through the sliding rod. A detection plate is fixedly installed on the top of the sliding rod. A laser rangefinder is fixedly installed on the inner top of the forging cylinder, and the laser rangefinder is located directly above the detection plate. A die base is slidably mounted inside the gear die, the forging seat can rotate in a circular manner on the surface of the forging machine body, and the connecting seat is used for fixed connection with the connecting seat.

[0007] Furthermore, the cleaning mechanism includes a movable groove opened below the gear mold, and a connecting rod is fixedly installed on the bottom of the gear mold. The connecting rod passes through and extends into the interior of the forging seat. The connecting rod is slidingly connected to the forging seat, and a reset spring is provided on the surface of the connecting rod.

[0008] Furthermore, at least four groups of connecting rods are arranged in a ring shape, a transmission pipe is fixedly installed on the bottom of the mold base, the bottom of the transmission pipe is slidably connected to the movable groove, and the mold base is connected to the transmission pipe.

[0009] Furthermore, a mounting cylinder is fixedly installed on the top of the connecting seat, a vertical groove extending to the interior is provided on the surface of the mounting cylinder, and a locking groove is provided on the mounting cylinder at the vertical groove. A locking rod is rotatably installed on the bottom of the forging cylinder, and a locking block is fixedly installed on the bottom of the locking rod, and the locking block is used to cooperate with the vertical groove and the locking groove.

[0010] Furthermore, a driving motor is fixedly installed on the inner bottom of the forging cylinder, and the output end of the driving motor is fixedly connected to one end of a clamping rod, and the length of the clamping rod is the same as the depth of the vertical groove.

[0011] Furthermore, an oblique annular groove is provided on the top of the mold base, and the bottom shape of the connecting seat is the same as the oblique annular groove.

[0012] Furthermore, a cleaning groove is provided between every two groups of the movable grooves, and a groove for the detection disc to fit into is provided at the bottom of the forging cylinder.

[0013] Furthermore, a rotating disk is fixedly installed on the surface of the forging seat, a slider is fixedly installed on the bottom of the rotating disk, and a matching disk is fixedly installed inside the forging machine body and below the forging seat, and the rotating disk is rotatably connected to the matching disk through the slider.

[0014] Furthermore, a rotating motor is fixedly installed on the inner bottom of the forging machine body, and the output end of the rotating motor is fixedly connected to the bottom of the forging seat. A driving cylinder is fixedly installed on the top of the forging machine body, and the output end of the driving cylinder is fixedly connected to the top of the forging cylinder. A control panel is provided on one side of the forging machine body, and the control panel is electrically connected to the laser rangefinder, the driving motor and the rotating motor.

[0015] The beneficial effects of the present invention are as follows: 1. The forging mechanism provided in the present invention can detect the rebound problem of the metal blank after forging in real time when forging the metal blank. If there is no rebound, the next level or the next-lower level forging is directly performed, which can effectively improve the forging efficiency and avoid excessive forging of the metal blank, which may cause certain problems to the metal blank. At the same time, if rebound of the metal blank is detected, the forging of the step can be performed again in time, thereby ensuring that the shape and size of the metal blank at each workstation are more accurate, avoiding excessive rebound causing the shape and size to not meet the requirements, and improving the forming accuracy.

[0016] 2. The cleaning mechanism provided in the present invention can quickly clean up the waste generated after forging and push it out of the gear mold by using the provided mold base after the metal blank is forged, thereby reducing the manual cleaning process. At the same time, the cleaning of metal waste can prevent metal waste from accumulating in the gear mold, reduce the impact on the mold and forming, and improve the forging accuracy.

[0017] 3. The present invention blows out the metal waste on the surface through the oblique ring groove, thereby cleaning the metal waste and preventing the metal waste from accumulating on the surface of the mold base and affecting the forging. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the forging machine body of the present invention; Figure 2 This is a front view of the forging machine body of the present invention; Figure 3 It is a schematic cross-sectional view of the forging seat of the present invention; Figure 4 It is a schematic diagram of the cleaning tank of the present invention; Figure 5 This invention Figure 3 Schematic diagram at point A in the middle; Figure 6 It is a schematic diagram of the forging cylinder of the present invention; Figure 7 This is a schematic diagram of the interior of the forging cylinder of the present invention; Figure 8 It is a schematic diagram of the interior of the installation cylinder of the present invention.

[0019] Figure numerals: 1. Forging machine body; 2. Forging mechanism; 201. Forging seat; 202. Gear mold; 203. Connecting seat; 204. Forging cylinder; 205. Detection disk; 206. Sliding rod; 207. Detection plate; 208. Laser rangefinder; 3. Cleaning mechanism; 31. Moving groove; 32. Connecting rod; 33. Reset spring; 34. Transmission tube; 4. Mold base; 5. Mounting cylinder; 6. Vertical groove; 7. Engaging groove; 8. Engaging rod; 9. Engaging block; 10. Driving motor; 11. Oblique annular groove; 12. Cleaning groove; 13. Rotating disk; 14. Matching disk; 15. Rotating motor; 16. Driving cylinder; 17. Control panel. DETAILED DESCRIPTION

[0020] To make the objectives, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0021] A step-by-step hot die forging device for a driving gear according to a preferred embodiment of the present invention will be described in detail below.

[0022] Example 1, as Figures 1-8 As shown, it includes a forging machine body 1, and a forging mechanism 2 and a cleaning mechanism 3 are arranged inside the forging machine body 1; The forging mechanism 2 includes a forging seat 201 arranged on the surface of the forging machine body 1, a gear die 202 is fixedly installed on the top of the forging seat 201, and at least six groups of gear dies 202 are arranged according to the processing schedule. A connecting seat 203 is provided above the forging seat 201, a forging cylinder 204 is provided above the forging seat 201, and a detection disk 205 is provided below the forging cylinder 204. A sliding rod 206 is fixedly installed on the top of the detection disk 205, and the sliding rod 206 passes through and extends to the interior of the forging cylinder 204. The detection disk 205 is slidably connected to the forging cylinder 204 through the sliding rod 206. A detection plate 207 is fixedly installed on the top of the sliding rod 206. A laser rangefinder 208 is fixedly installed on the inner top of the forging cylinder 204, and the laser rangefinder 208 is located directly above the detection plate 207; A die base 4 is slidably mounted inside the gear die 202 , and the forging seat 201 can rotate in a circular manner on the surface of the forging machine body 1 , and the connecting seat 203 is used to be fixedly connected to the connecting seat 203 ; The staff first places the metal blank to be forged on the top of the connecting seat 203, and then controls the forging cylinder 204 to connect with the connecting seat 203. Then the staff controls the forging cylinder 204 to drive the metal blank through the connecting seat 203 and move it to the inside of the gear mold 202. At this time, the detection disk 205 is in contact with the top of the metal blank. Then the staff controls the forging cylinder 204 to move downward, thereby driving the metal blank to descend to the inside of the gear mold 202, and forging the metal blank through the forging cylinder 204 and the gear mold 202. After the forging cylinder 204 completes the first level of forging, the staff controls the forging cylinder 204 to move upward. Since the detection disk 205 continues to be in contact with the surface of the metal blank, if the metal blank rebounds, the rebounded metal blank will push the detection disk 205 upward due to the rebound, and the detection disk 205 moves vertically below the forging cylinder 204 through the sliding rod 206. 06 drives the detection plate 207 to move upward synchronously. At this time, the laser rangefinder 208 will detect the distance moved by the detection plate 207. When the distance that the detection plate 207 moves upward due to the rebound of the metal billet exceeds the set threshold, the laser rangefinder 208 will control the forging cylinder 204 to move downward again to forge the metal billet until the rebound of the metal billet is lower than the set threshold. At this time, the forging seat 201 will rotate, thereby moving the second-stage gear die 202 to the bottom of the forging cylinder 204 for the next level of forging, and repeating this process until the forging is completed. At the same time, when forging is being performed, the laser rangefinder 208 detects the rebound distance. If the metal billet does not rebound after one forging is completed, the laser rangefinder 208 will judge the number of times the metal billet is forged according to the detected threshold, whether it is step-by-step forging or skip-step forging, thereby avoiding the problem of excessive forging of the metal billet. The forging mechanism 2 is set up to detect the rebound problem of the metal blank after forging in real time when forging the metal blank. If there is no rebound, the next level or the next level of forging is directly performed, which can effectively improve the forging efficiency and avoid excessive forging of the metal blank, which may cause certain problems to the metal blank. At the same time, if it is detected that the metal blank rebounds, the forging step can be performed again in time, thereby ensuring that the shape and size of the metal blank at each workstation are more accurate, avoiding excessive rebound causing the shape and size to not meet the requirements, and improving the forming accuracy.

[0023] Example 2, as Figures 1-8As shown, the cleaning mechanism 3 includes a movable groove 31 opened below the gear mold 202, a connecting rod 32 is fixedly installed at the bottom of the gear mold 202, the connecting rod 32 passes through and extends into the interior of the forging seat 201, the connecting rod 32 is slidably connected to the forging seat 201, and a return spring 33 is sleeved on the surface of the connecting rod 32. There are at least four groups of connecting rods 32 arranged in an annular shape, and a transmission pipe 34 is fixedly installed at the bottom of the mold base 4. The bottom of the transmission pipe 34 is slidably connected to the movable groove 31, and the mold base 4 is connected to the transmission pipe 34; When the metal blank moves into the gear mold 202, the metal blank pushes the mold base 4 to move downward. When the mold base 4 moves, it moves inside the forging seat 201 through the connecting rod 32, and at the same time squeezes the return spring 33, causing the return spring 33 to contract due to elastic potential energy. After completing one forging, the return spring 33 pushes the mold base 4 upward due to elastic potential energy, thereby scraping the metal waste generated by the forging of the metal blank from the gear mold 202, and pushing it out of the gear mold 202, thereby cleaning the inside of the gear mold 202; By setting up the cleaning mechanism 3, after the metal blank is forged, the waste generated after forging can be quickly cleaned and pushed out of the gear mold 202 using the set mold base 4, thereby reducing the manual cleaning process. At the same time, the cleaning of metal waste can prevent metal waste from accumulating in the gear mold 202, reducing the impact on the mold and forming, and improving the forging accuracy.

[0024] Example 3, as Figure 6-Figure 8 As shown, a mounting cylinder 5 is fixedly mounted on the top of the connecting seat 203, a vertical groove 6 extending to the inside is opened on the surface of the mounting cylinder 5, and a snap-fit groove 7 is opened on the mounting cylinder 5 at the vertical groove 6. A snap-fit rod 8 is rotatably mounted on the bottom of the forging cylinder 204, and a snap-fit block 9 is fixedly mounted on the bottom of the snap-fit rod 8. The snap-fit block 9 is used to cooperate with the vertical groove 6 and the snap-fit groove 7. When the forging cylinder 204 moves downward, it will drive the locking rod 8 and the locking block 9 to move downward synchronously. When the locking rod 8 moves downward, the locking block 9 moves to the inside of the installation cylinder 5 through the vertical groove 6. At the same time, the locking rod 8 rotates inside the locking groove 7, which will cause the forging cylinder 204 to engage with the installation cylinder 5 through the locking block 9, thereby completing the installation of the connecting seat 203.

[0025] Example 4, as Figures 1-8 As shown, a driving motor 10 is fixedly mounted on the inner bottom of the forging cylinder 204. The output end of the driving motor 10 is fixedly connected to one end of the engaging rod 8. The length of the engaging rod 8 is the same as the depth of the vertical groove 6. An oblique annular groove 11 is formed on the top of the mold base 4. The bottom shape of the connecting seat 203 is the same as the oblique annular groove 11. A cleaning groove 12 is formed between each two sets of movable grooves 31. When the forging cylinder 204 drives the connecting seat 203 to move above the gear mold 202 and forges the metal blank, the bottom of the connecting seat 203 will fit with the oblique annular groove 11 on the surface of the mold base 4, and when it moves downward, it will drive the mold base 4 to move downward. When the metal blank is forged through the first-stage gear mold 202, the mold base 4 of the gear mold 202 will push out the metal waste inside it. At the same time, when the forging cylinder 204 drives the metal blank to forge the second-stage gear mold 202, the gear mold 202 will press the gas into the transmission pipe 34 below the first-stage gear mold 202 through the transmission pipe 34 and the cleaning groove 12, and then blow out the metal waste on its surface through the oblique annular groove 11, so as to clean the metal waste and prevent the metal waste from accumulating on the surface of the mold base 4 and affecting the forging.

[0026] Example 5, as Figures 1-8 As shown, a rotating disk 13 is fixedly mounted on the surface of a forging seat 201, a slider is fixedly mounted on the bottom of the rotating disk 13, a matching disk 14 is fixedly mounted inside the forging press body 1 and below the forging press seat 201, the rotating disk 13 is rotatably connected to the matching disk 14 via the slider, a rotating motor 15 is fixedly mounted on the inner bottom of the forging press body 1, the output end of the rotating motor 15 is fixedly connected to the bottom of the forging press seat 201, a driving cylinder 16 is fixedly mounted on the top of the forging press body 1, the output end of the driving cylinder 16 is fixedly connected to the top of the forging cylinder 204, a control panel 17 is provided on one side of the forging press body 1, and the control panel 17 is electrically connected to the laser rangefinder 208, the driving motor 10 and the rotating motor 15; The rotating motor 15 can drive the forging seat 201 to rotate on the surface of the forging machine body 1. When the forging seat 201 rotates, the rotating disk 13 and the slider can rotate inside the matching disk 14, thereby improving the stability during rotation.

[0027] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A step-by-step hot die forging device for a driving gear, comprising a forging machine body (1), characterized in that: A forging mechanism (2) and a cleaning mechanism (3) are provided inside the forging machine body (1); The forging mechanism (2) comprises a forging seat (201) arranged on the surface of the forging machine body (1), a gear die (202) is fixedly installed on the top of the forging seat (201), and the gear die (202) is provided in at least six groups according to the processing progress, a connecting seat (203) is provided above the forging seat (201), a forging cylinder (204) is provided above the forging seat (201), and a detection disk (205) is provided below the forging cylinder (204), and the detection disk A sliding rod (206) is fixedly installed on the top of (205), and the sliding rod (206) passes through and extends to the inside of the forging cylinder (204). The detection disk (205) is slidably connected to the forging cylinder (204) through the sliding rod (206). A detection plate (207) is fixedly installed on the top of the sliding rod (206). A laser rangefinder (208) is fixedly installed on the inner top of the forging cylinder (204). The laser rangefinder (208) is located directly above the detection plate (207); A die base (4) is slidably mounted inside the gear die (202), the forging seat (201) is capable of annularly rotating on the surface of the forging machine body (1), and the connecting seat (203) is used for fixed connection with the connecting seat (203).

2. The step-by-step hot die forging device for a driving gear according to claim 1, characterized in that: The cleaning mechanism (3) includes a movable groove (31) provided below the gear mold (202), a connecting rod (32) being fixedly mounted on the bottom of the gear mold (202), the connecting rod (32) passing through and extending into the interior of the forging seat (201), the connecting rod (32) being slidably connected to the forging seat (201), and a return spring (33) being sleeved on the surface of the connecting rod (32).

3. The step-by-step hot die forging device for a driving gear according to claim 2, characterized in that: At least four groups of connecting rods (32) are arranged in an annular shape. A transmission tube (34) is fixedly installed at the bottom of the mold base (4). The bottom of the transmission tube (34) is slidably connected to the movable groove (31). The mold base (4) is connected to the transmission tube (34).

4. The step-by-step hot die forging device for a driving gear according to claim 1, characterized in that: A mounting cylinder (5) is fixedly mounted on the top of the connecting seat (203), a vertical groove (6) extending to the inside is provided on the surface of the mounting cylinder (5), a snap-fit groove (7) is provided on the mounting cylinder (5) at the vertical groove (6), a snap-fit rod (8) is rotatably mounted on the bottom of the forging cylinder (204), a snap-fit block (9) is fixedly mounted on the bottom of the snap-fit rod (8), and the snap-fit block (9) is used to cooperate with the vertical groove (6) and the snap-fit groove (7).

5. The step-by-step hot die forging device for a driving gear according to claim 1, characterized in that: A driving motor (10) is fixedly mounted on the inner bottom of the forging cylinder (204), and an output end of the driving motor (10) is fixedly connected to one end of a locking rod (8), wherein the length of the locking rod (8) is the same as the depth of the vertical slot (6).

6. The step-by-step hot die forging device for a driving gear according to claim 1, characterized in that: An oblique annular groove (11) is provided on the top of the mold base (4), and the bottom shape of the connecting seat (203) is the same as the oblique annular groove (11).

7. The step-by-step hot die forging device for a driving gear according to claim 2, characterized in that: A cleaning groove (12) is provided between each two groups of the movable grooves (31), and a groove for the detection disc (205) to fit into is provided at the bottom of the forging cylinder (204).

8. The step-by-step hot die forging device for a driving gear according to claim 1, characterized in that: A rotating disk (13) is fixedly mounted on the surface of the forging seat (201), a slider is fixedly mounted on the bottom of the rotating disk (13), and a matching disk (14) is fixedly mounted inside the forging machine body (1) and below the forging seat (201), and the rotating disk (13) is rotatably connected to the matching disk (14) via the slider.

9. The step-by-step hot die forging device for a driving gear according to claim 1, characterized in that: A rotating motor (15) is fixedly mounted on the inner bottom of the forging machine body (1), and the output end of the rotating motor (15) is fixedly connected to the bottom of the forging seat (201). A driving cylinder (16) is fixedly mounted on the top of the forging machine body (1), and the output end of the driving cylinder (16) is fixedly connected to the top of the forging cylinder (204). A control panel (17) is provided on one side of the forging machine body (1), and the control panel (17) is electrically connected to the laser rangefinder (208), the driving motor (10) and the rotating motor (15).

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