Method and mechanism for forming a snap spring groove of a toothed hub

Abstract

The present application provides a tooth hub snap spring groove forming mechanism, comprising a fixed base, the rear end upper portion of the fixed base is welded with a rear support plate, the front end upper portion of the rear support plate is bolted with a forming hydraulic cylinder on the left and right sides respectively, characterized in that the upper portion of the fixed base is bolted with a limiting lifting column at the four corner positions respectively, the upper center position of the fixed base is bolted with a bottom forming template, and the upper portion of the bottom forming template is provided with a separation groove; the inner side of the limiting lifting column is respectively provided with a through forming die disc assembly and a top snap groove forming die disc. The present application has the beneficial effects that the setting of the lifting outer frame, tooth hub forming hole, limiting sliding groove, spring storage groove and compression spring is beneficial to the up-and-down through setting of the tooth hub forming hole and facilitates the quick demolding of the formed tooth hub.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of tooth hub snap spring groove forming, and particularly relates to a tooth hub snap spring groove forming mechanism. BACKGROUND

[0002] At present, the automobile industry is developing, and the demand for gearboxes is increasing day by day. The automobile gearbox is internally provided with a tooth hub, and the end face of the tooth hub is provided with a snap spring groove. Most of the tooth hub snap spring grooves are processed by extrusion forming. The extrusion formed tooth hub is relatively troublesome to demold and separate, and a large amount of time is occupied. SUMMARY

[0003] In view of the above technical problems, the present application provides a tooth hub snap spring groove forming mechanism. The mold is provided in three sections, and the middle section shell is through from top to bottom, which facilitates rapid demolding.

[0004] The technical scheme is as follows: the tooth hub snap spring groove forming mechanism comprises a fixed base, a rear support plate is welded to the upper part of the rear end of the fixed base, and a forming hydraulic cylinder is bolted to the upper part of the front end of the rear support plate on the left and right sides, respectively. Its characterized in that the upper part of the fixed base is bolted to the four corner positions of the limiting lifting column, the bottom forming template is bolted to the center position of the upper part of the fixed base, and the separating groove is formed in the upper part of the bottom forming template; the inner side of the limiting lifting column is respectively provided with a through forming mold disc assembly and a top clamping groove forming mold disc.

[0005] Preferably, the through forming mold disc assembly comprises a lifting outer frame, a tooth hub forming hole is formed in the inner side center position of the lifting outer frame, limiting sliding grooves are respectively formed in the inner side four corner positions of the lifting outer frame, spring receiving grooves are respectively formed in the upper and lower parts of the lifting outer frame, and compression springs are placed in the inner side of the spring receiving grooves.

[0006] Preferably, the top clamping groove forming mold disc comprises a top pressing plate, a positioning protrusion and an inner groove forming protrusion are integrally arranged on the lower part of the top pressing plate, respectively, and a snap spring groove separating block is integrally arranged on the lower part of the inner groove forming protrusion.

[0007] Preferably, the rear end lower part of the rear support plate is bolted to a moving air cylinder, and the front end lower part of the rear support plate is provided with an ejection push plate, and the rear end of the ejection push plate is bolted to the output rod of the moving air cylinder.

[0008] Preferably, the spring receiving grooves are respectively located in the upper and lower parts of the limiting sliding grooves, and the compression springs are sleeved on the outer side of the limiting lifting column.

[0009] Preferably, the limiting lifting column penetrates the inner side of the limiting sliding groove, and the lifting outer frame is located on the upper part of the bottom forming template.

[0010] The clamping spring groove forming method of the tooth hub specifically comprises the following steps:

[0011] Step one: mold installation: first, install the cleaned mold on the stamping equipment, and ensure that the molds are normally closed;

[0012] Step two: plate blanking, specifically comprising the following operation steps:

[0013] First step: size determination: measure the width of the plate material through the size of the mold, and reserve four to five centimeters of margin on both sides;

[0014] Second step: plate cutting: cut the plate material using a cutting machine, and put the end of the plate material into the automatic feeding machine;

[0015] Third step: plate feeding: move the plate material to the upper part of the lifting outer frame through the automatic feeding machine, and the plate material is located between the lifting outer frame and the inner groove forming protrusion;

[0016] Step three: extrusion forming, specifically comprising the following operation steps:

[0017] First step: hydraulic cylinder down: the external controller controls the output rod of the forming hydraulic cylinder to move downward, and the forming hydraulic cylinder pushes the top pressing plate to move downward;

[0018] Second step: plate separation: during the downward pressing of the top pressing plate, the positioning protrusion and the tooth hub forming hole on the inner side of the lifting outer frame cooperate with each other to cut the forming material from the plate material;

[0019] Third step: extrusion forming: as the output rod of the forming hydraulic cylinder continues to move downward, until the top pressing plate is tightly attached to the upper part of the lifting outer frame, the bottom forming template is inserted into the inner side of the tooth hub forming hole, and the clamping spring groove separation block and the separation groove cooperate with each other to extrude the clamping spring groove on the end face of the tooth hub;

[0020] Step four: tooth hub demolding: after extrusion forming, the output rod of the forming hydraulic cylinder is reset upward, and the compression spring pushes the lifting outer frame and the top pressing plate upward through its own elastic force, and the vibration occurring during the movement process can make the formed tooth hub automatically slide downward;

[0021] Step five: separation and discharging: the formed tooth hub is located on the upper part of the bottom forming template, and then the cylinder at the rear end of the rear support plate pushes the discharging push plate at the front end of the rear support plate to move, so that the formed tooth hub is pushed to the collection box placed in front of the fixed base.

[0022] Compared with the prior art, the beneficial effects of the present application are:

[0023] 1. The lifting outer frame, tooth hub forming hole, limiting sliding groove, spring receiving groove and compression spring are arranged, which is beneficial to the tooth hub forming hole arranged through up and down, and facilitates the quick demolding of the formed tooth hub.

[0024] 2. The top pressing plate, positioning protrusion, inner groove forming protrusion and snap spring groove separation block are arranged, which is beneficial to the quick forming of the snap spring groove in cooperation with the separation groove. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a structural schematic diagram of the present application.

[0026] Figure 2 is a structural schematic diagram of the through forming mold disc assembly of the present application.

[0027] Figure 3 is a structural schematic diagram of the top snap groove forming mold disc of the present application.

[0028] Figure 4 is a snap spring groove forming method of the tooth hub.

[0029] Figure 5 is a plate blanking flowchart.

[0030] Figure 6 is an extrusion forming flowchart.

[0031] In the drawings:

[0032] 1, fixed base; 2, rear support plate; 3, forming hydraulic cylinder; 4, limiting lifting column; 5, bottom forming mold plate; 6, separation groove; 7, through forming mold disc assembly; 71, lifting outer frame; 72, tooth hub forming hole; 73, limiting sliding groove; 74, spring receiving groove; 75, compression spring; 8, top snap groove forming mold disc; 81, top pressing plate; 82, positioning protrusion; 83, inner groove forming protrusion; 84, snap spring groove separation block. DETAILED DESCRIPTION

[0033] The present application is further described below in conjunction with the drawings:

[0034] Embodiment:

[0035] As shown in the drawings Figure 1As shown, the snap spring groove forming mechanism of the gear hub comprises a fixed base 1, a rear support plate 2 welded on the upper part of the rear end of the fixed base 1, and a forming hydraulic cylinder 3 bolted on the upper part of the left and right sides of the front end of the rear support plate 2, characterized in that a limiting lifting column 4 is bolted on the upper part of the four corners of the fixed base 1, a bottom forming template 5 is bolted on the central position of the upper part of the fixed base 1, and a separation groove 6 is formed on the upper part of the bottom forming template 5; the inner side of the limiting lifting column 4 is respectively provided with a through forming die disc assembly 7 and a top snap groove forming die disc 8; the through forming die disc assembly 7 comprises a lifting outer frame 71, a gear hub forming hole 72 is formed on the inner side of the central position of the lifting outer frame 71, limiting sliding grooves 73 are respectively formed on the inner side of the four corners of the lifting outer frame 71, spring receiving grooves 74 are respectively formed on the upper and lower parts of the lifting outer frame 71, and compression springs 75 are placed on the inner side of the spring receiving grooves 74.

[0036] As shown in the accompanying drawings, Figure 3 In the above embodiment, specifically, the top snap groove forming die disc 8 comprises a top pressing plate 81, a positioning protrusion 82 and an inner groove forming protrusion 83 are integrally arranged on the lower part of the top pressing plate 81, and a snap spring groove separation block 84 is integrally arranged on the lower part of the inner groove forming protrusion 83.

[0037] In the above embodiment, specifically, a moving air cylinder is bolted on the lower part of the rear end of the rear support plate 2, and a discharging push plate is arranged on the lower part of the front end of the rear support plate 2, and the rear end of the discharging push plate is bolted with the output rod of the moving air cylinder.

[0038] In the above embodiment, specifically, the spring receiving grooves 74 are respectively located on the upper and lower parts of the limiting sliding grooves 73, and the compression springs 75 are sleeved on the outer side of the limiting lifting column 4.

[0039] In the above embodiment, specifically, the limiting lifting column 4 penetrates the inner side of the limiting sliding grooves 73, and the lifting outer frame 71 is located on the upper part of the bottom forming template 5.

[0040] In the above embodiment, specifically, the upper part of the limiting lifting column 4 penetrates the inner side of the four corners of the top pressing plate 81, and the upper part of the top pressing plate 81 is bolted with the lower part of the output rod of the forming hydraulic cylinder 3.

[0041] The gear hub snap spring groove forming method specifically comprises the following steps:

[0042] S101: mold installation: first, clean the mold and install it on the stamping equipment, and ensure that the molds are normally closed;

[0043] S102: plate blanking, specifically including the following operation steps:

[0044] S201: Size determination: measure the width of the plate through the size of the die, and leave four to five centimeters of margin on both sides;

[0045] S202: Plate cutting: cut the plate with a cutting machine, and put the end of the plate into the automatic feeding machine;

[0046] S203: Plate feeding: move the plate to the upper part of the lifting outer frame 71 through the automatic feeding machine, and the plate is located between the lifting outer frame 71 and the inner groove forming protrusion 83;

[0047] S103: extrusion forming, specifically including the following operation steps:

[0048] S301: Hydraulic cylinder down: the output rod of the forming hydraulic cylinder 3 is controlled to move downward by the external controller, and the forming hydraulic cylinder 3 pushes the top pressing plate 81 to move downward;

[0049] S302: Plate separation: during the downward movement of the top pressing plate 81, the positioning protrusion 82 and the tooth hub forming hole 72 on the inner side of the lifting outer frame 71 cooperate with each other to cut the forming material from the plate;

[0050] S303: Extrusion forming: as the output rod of the forming hydraulic cylinder 3 continues to move downward, until the top pressing plate 81 is tightly attached to the upper part of the lifting outer frame 71, the bottom forming template 5 is inserted into the inner side of the tooth hub forming hole 72, and the snap spring groove separation block 84 and the separation groove 6 cooperate with each other to extrude the snap spring groove on the end face of the tooth hub;

[0051] S104: Tooth hub demolding: after extrusion forming, the output rod of the forming hydraulic cylinder 3 is reset upward, and the compression spring 75 pushes the lifting outer frame 71 and the top pressing plate 81 upward by its own elastic force. The vibration that occurs during the movement process can make the formed tooth hub automatically slide downward;

[0052] S105: Separate out the material: the formed tooth hub is located on the upper part of the bottom forming template 5, and then the cylinder at the rear end of the rear support plate 2 pushes the outfeed push plate at the front end of the rear support plate 2 to move, which pushes the formed tooth hub to the collection box placed in front of the fixed base 1.

[0053] Working principle

[0054] The working principle of the present application is as follows: the plate material is moved to the upper part of the lifting outer frame 71, and the plate material is located between the lifting outer frame 71 and the inner groove forming protrusion 83; the external controller controls the output rod of the forming hydraulic cylinder 3 to move downward; the forming hydraulic cylinder 3 pushes the top pressing plate 81 to move downward; the positioning protrusion 82 and the toothed hub forming hole 72 on the inner side of the lifting outer frame 71 are matched with each other to cut the forming material from the plate material until the top pressing plate 81 is tightly attached to the upper part of the lifting outer frame 71; the bottom forming template 5 is inserted into the inner side of the lower part of the toothed hub forming hole 72; at the same time, the snap spring groove separation block 84 and the separation groove 6 are matched with each other to extrude the snap spring groove at the end face of the toothed hub; the output rod of the forming hydraulic cylinder 3 is reset upward; the compression spring 75 pushes the lifting outer frame 71 and the top pressing plate 81 to move upward by the elastic force of itself; the vibration occurring in the moving process can make the formed toothed hub automatically slide downward.

[0055] The technical solutions of the present application or the technical solutions inspired by the present application can be used to design similar technical solutions to achieve the above technical effects, which are within the protection scope of the present application.

Claims

1. A cotter slot forming mechanism for a gear hub, characterized by, The snap spring groove forming mechanism of the gear hub comprises a fixed base (1), a rear support plate (2) is welded on the upper part of the rear end of the fixed base (1), forming hydraulic cylinders (3) are respectively bolted on the upper part of the front end of the rear support plate (2), characterized in that limit lifting columns (4) are respectively bolted on the upper part of the four corners of the fixed base (1), a bottom forming template (5) is bolted on the central position of the upper part of the fixed base (1), and a separation groove (6) is formed on the upper part of the bottom forming template (5); the inner sides of the limit lifting columns (4) are respectively provided with through forming die disc assemblies (7) and top snap groove forming die discs (8); the through forming die disc assembly (7) comprises a lifting outer frame (71), a gear hub forming hole (72) is formed on the inner side of the central position of the lifting outer frame (71), limit sliding grooves (73) are respectively formed on the inner sides of the four corners of the lifting outer frame (71), spring receiving grooves (74) are respectively formed on the upper and lower parts of the lifting outer frame (71), and compressed springs (75) are placed in the inner sides of the spring receiving grooves (74); the top snap groove forming die disc (8) comprises a top pressing plate (81), a positioning protrusion (82) and an inner groove forming protrusion (83) are respectively integrally arranged on the lower part of the top pressing plate (81), and a snap spring groove separation block (84) is integrally arranged on the lower part of the inner groove forming protrusion (83).

2. The cotter pin slot forming mechanism of claim 1 wherein, The rear end of the lower part of the rear support plate (2) is bolted with a moving air cylinder, and the front end of the lower part of the rear support plate (2) is provided with an ejection push plate, and the rear end of the ejection push plate is bolted with the output rod of the moving air cylinder.

3. The pinion hub clasp groove forming mechanism of claim 2 wherein, The spring receiving grooves (74) are respectively located on the upper and lower parts of the limit sliding grooves (73), and the compressed springs (75) are sleeved on the outer sides of the limit lifting columns (4).

4. The pinion hub clasp groove forming mechanism of claim 3 wherein, The limit lifting columns (4) penetrate the inner sides of the limit sliding grooves (73), and the lifting outer frame (71) is located on the upper part of the bottom forming template (5).

5. The method of forming a clip spring slot of a pinion hub according to claim 4, wherein, Specifically comprising the following steps: Step one: mold installation: first, install the cleaned mold on the stamping equipment, and ensure that the molds are normally closed; Step two: plate blanking; Step three: extrusion forming; Step four: gear hub demolding: after extrusion forming, the output rod of the forming hydraulic cylinder resets upward, the compressed spring pushes the lifting outer frame and the top pressing plate upward by its own elastic force, and the vibration occurring during the moving process can make the formed gear hub automatically slide downward; Step five: separation ejection: the formed gear hub is located on the upper part of the bottom forming template, then the cylinder at the rear end of the rear support plate pushes the ejection push plate at the front end of the rear support plate to move, and the formed gear hub is pushed into the collection box placed in front of the fixed base in advance.

6. The method of claim 5, wherein the step of forming the spring slot comprises: In step two, the plate blanking specifically comprises the following operation steps: First step: size determination: measure the width of the plate by the size of the mold, and leave four to five centimeters of margin on both sides; Second step: plate cutting: cut the plate with a cutting machine, and put the end of the plate into the automatic feeding machine; Third step: plate feeding: through the automatic feeding machine, the plate is moved to the upper part of the lifting outer frame, and the plate is located between the lifting outer frame and the inner groove forming protrusion.

7. The method of claim 5, wherein the step of forming the spring slot comprises the step of: In step two, the extrusion forming specifically includes the following operation steps: First step: hydraulic cylinder down: the external controller controls the output rod of the forming hydraulic cylinder to move downward, and the forming hydraulic cylinder pushes the top pressing plate to move downward; Second step: plate separation: during the downward movement of the top pressing plate, the positioning protrusion and the tooth hub forming hole on the inner side of the lifting outer frame cooperate with each other to cut the forming material from the plate; Third step: extrusion forming: as the output rod of the forming hydraulic cylinder continues to move downward, until the top pressing plate is tightly attached to the upper part of the lifting outer frame, the bottom forming template is inserted into the inner side of the tooth hub forming hole, and at the same time, the snap spring groove separation block and the separation groove cooperate with each other to extrude the snap spring groove on the end face of the tooth hub.

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