A step shaft housing stamping device and method

Abstract

The present invention relates to the field of stamping technology, and specifically discloses a stepped shaft housing stamping device, wherein a positioning plate is fixedly mounted on the outer peripheral side of the stamping shaft, an inner die sleeve is movably mounted on the outer peripheral side of the stamping shaft, one end of a guide rod is fixedly connected to an inner die sleeve, and the other end movably passes through a positioning plate, when the inner die sleeve approaches the positioning plate, an elastic member is compressed, a baffle is rotatably connected to the stamping shaft, the positioning plate is located between the baffle and the inner die sleeve, and the distance between the baffle and the positioning plate is adjustable, a through hole is provided on the baffle for the guide rod to pass through, an outer die assembly can form a cavity for accommodating a blank, and the cavity is directly opposite to the stamping shaft; the present invention can stamp an inner hole without a step or with a step in the blank through the stamping shaft and the inner die sleeve, and can stamp inner holes of different lengths by adjusting the position of the baffle in the length direction of the stamping shaft.

Description

Technical Field

[0001] The present invention relates to the field of stamping technology, and in particular to a stamping device and method for a stepped shaft housing. Background Art

[0002] Stamping is a forming method that relies on a press and a die to apply external force to plates, strips, tubes and profiles to cause them to undergo plastic deformation or separation, thereby obtaining workpieces of the desired shape and size. The stamping process of a stepped shaft housing usually includes main steps such as pretreatment, heat treatment, stamping, cooling, grinding and painting.

[0003] The patent document with authorization announcement number CN221362260U discloses a combined mold and tooling for forming a hollow stepped shaft blank, including a die for holding metal material and forming the outer wall of the metal material, and a punch for forming the inner wall of the metal material; by matching the inner wall of the upper part of the die with the outer wall of the movable ram, the combined mold has the effect of enabling the movable ram to vertically enter and exit the inner cavity of the die and ensure that the center lines of the two are consistent, and when the movable ram and the punch on the same central axis (center line) are pressed down, the axis of the movable ram is consistent with the central axis of the punch when it descends into the inner cavity of the die, effectively ensuring that the blank is not unstable and does not shift in position in the closed die cavity, avoiding deformation of the blank during hot extrusion, achieving the purpose of improving the quality of the workpiece and improving the yield rate of the workpiece.

[0004] When the blank is punched, the above technical solution can only be used to form a stepped shaft housing inner wall structure due to the fixed punch structure. When the inner wall needs to be punched into other shapes, the inner mold needs to be replaced, which is cumbersome to operate and has poor applicability. Summary of the invention

[0005] The present invention provides a stepped shaft housing stamping device and method, aiming to solve the problem of poor applicability and the need to frequently replace inner molds when stamping stepped shaft housings with different inner wall shapes in the related art.

[0006] A step shaft housing stamping device, comprising a frame, an inner die assembly, an outer die assembly and a driving member, wherein the inner die assembly comprises a stamping shaft, a positioning plate, an inner die sleeve, a guide rod, an elastic member and a baffle, wherein the stamping shaft is arranged on the frame, the positioning plate is fixedly mounted on the outer peripheral side of the stamping shaft, the inner die sleeve is movably sleeved on the outer peripheral side of the stamping shaft, the guide rod is parallel to the inner die sleeve, one end of the guide rod is fixedly connected to the inner die sleeve, and the other end movably passes through the positioning plate, and the elastic member is arranged between the guide rod and the positioning plate When the inner mold sleeve approaches the positioning plate, the elastic member will be compressed, the baffle is rotatably connected to the stamping shaft, the positioning plate is located between the baffle and the inner mold sleeve, and the distance between the baffle and the positioning plate is adjustable, the baffle is provided with a through hole for the guide rod to pass through, the outer mold assembly can form a cavity for accommodating the blank, and the cavity is opposite to the inner mold assembly, and the output end of the driving member is fixedly connected to the stamping shaft and can drive the inner mold assembly to approach or move away from the cavity.

[0007] The beneficial effects of the present invention are as follows: by adjusting the rotation angle of the baffle plate 1, when punching the inner hole of the blank, an inner hole with no step or with one step can be punched in the blank through the punching shaft and the inner mold sleeve 1, and by adjusting the position of the baffle plate 1 in the length direction of the punching shaft, inner holes of different lengths can be punched, and the scope of application is wider.

[0008] Preferably, the inner mold assembly further includes baffle plate 2, wherein baffle plate 2 is rotatably connected to the stamping shaft, baffle plate 1 is located between positioning plate 1 and baffle plate 2, and the distance between baffle plate 2 and positioning plate 1 is adjustable.

[0009] Preferably, the inner mold assembly also includes an inner mold sleeve two, a guide rod two and an elastic member two. The inner mold sleeve two is movably sleeved on the outer peripheral side of the inner mold sleeve one. The guide rod two is parallel to the inner mold sleeve two, one end of which is fixedly connected to the inner mold sleeve two, and the other end movably passes through the positioning plate one. The elastic member two is arranged between the guide rod two and the positioning plate one. When the inner mold sleeve two is close to the positioning plate one, the elastic member two will be compressed.

[0010] Preferably, the baffle plate 1 is provided with a through hole 2 through which the guide rod 2 can pass, and when the guide rod 2 and the through hole 2 are facing each other, the baffle plate 1 can block the guide rod 1.

[0011] Preferably, the baffle plate 1 is provided with a through hole 3 and a through hole 4 through which the guide rod 1 and the guide rod 2 can pass simultaneously, which has the effect of facilitating punching an inner hole without a step in the blank, and according to the different blocking positions of the baffle plate 2 on the guide rod 1 and the guide rod 2, inner holes of various sizes with a step can be formed in the blank.

[0012] Preferably, the baffle plate 2 is provided with a through hole 5 for the guide rod 2 to pass through. When the through hole 5 is directly opposite to the guide rod 2, the baffle plate 2 can stop the guide rod 1. The effect is that by setting the through hole 5 and the different blocking positions of the baffle plate 2 to the guide rod 1, it is convenient to form inner holes of various sizes with a step in the blank.

[0013] Preferably, the baffle plate 2 is provided with through hole 6 and through hole 7 through which the guide rod 1 and the guide rod 2 can pass at the same time, and the effect is that: when stamping the blank, the baffle plate 1 is controlled to rotate so that the guide rod 1 and the guide rod 2 are respectively opposite to the through hole 3 and the through hole 4, and the baffle plate 2 is controlled to rotate so that the guide rod 1 and the guide rod 2 are respectively opposite to the through hole 6 and the through hole 7, so that an inner hole without steps can be punched in the blank.

[0014] Preferably, the inner mold sleeve 2 is provided with an avoidance groove, and the avoidance groove corresponds to the guide rod 1, and its effect is that the avoidance groove can facilitate the relative movement of the inner mold sleeve 1 and the inner mold sleeve 2.

[0015] The step shaft housing stamping method of the present invention is described below.

[0016] A stamping method based on the above-mentioned stepped shaft housing stamping device comprises the following steps:

[0017] placing the blank into the cavity of the outer mold assembly;

[0018] According to the required shape of the inner wall of the stepped shaft housing, adjust the distance between the baffle plate 1 and the positioning plate 1;

[0019] According to the required shape of the inner wall of the stepped shaft housing, the baffle plate 1 is controlled to rotate so that the through hole 1 is directly opposite to the guide rod 1, or the through hole 1 is misaligned with the guide rod 1;

[0020] The control driving member 1 drives the inner mold assembly to move toward the blank and punch the blank.

[0021] The above punching method is used to facilitate punching inner holes of different sizes into the blank.

[0022] By adopting the above technical scheme, the beneficial effects of the present invention are as follows: the present invention adjusts the rotation angle of the baffle plate 1, and when punching the inner hole of the blank, an inner hole with no step or with one step can be punched in the blank through the punching shaft and the inner mold sleeve 1, and inner holes of different lengths can be punched by adjusting the position of the baffle plate 1 in the length direction of the punching shaft, which has a wider range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present invention.

[0024] Figure 2 It is a schematic diagram of the installation structure of the inner mold assembly of the present invention.

[0025] Figure 3 It is a schematic diagram of the installation structure of baffle 1 and baffle 2 of the present invention.

[0026] Figure 4 It is a schematic diagram of the installation structure of the outer mold assembly of the present invention.

[0027] Figure 5 It is a schematic diagram of the installation structure of the outer mold sleeve 1 and the outer mold sleeve 2 of the present invention.

[0028] Reference numerals:

[0029] 1. Frame; 11. Bottom plate 1; 12. Bottom plate 2; 13. Support frame;

[0030] 21. Stamping shaft; 211. Insertion hole; 22. Positioning plate 1; 23. Inner mold sleeve 1; 24. Guide rod 1; 25. Elastic member 1; 26. Baffle 1; 27. Baffle 2; 28. Inner mold sleeve 2; 281. Avoidance groove; 29. ​​Guide rod 2; 30. Elastic member 2; 31. Ring sleeve 1; 32. Shaft sleeve 1; 33. Insert rod 1; 34. Shaft sleeve 2; 35. Insert rod 2; 36. Ring sleeve 2;

[0031] 4. Driving assembly 1; 41. Motor 1; 42. Gear 1; 43. Ring gear 1;

[0032] 5. Driving assembly 2; 51. Motor 2; 52. Gear 2; 53. Ring gear 2;

[0033] 61. Support shaft; 62. Sleeve; 63. Positioning plate 2; 64. Outer mold sleeve 1; 65. Outer mold sleeve 2; 66. Guide rod 3; 67. Guide rod 4; 68. Elastic member 3; 69. Elastic member 4; 70. Baffle 3; 71. Baffle 4; 72. Shaft sleeve 3; 73. Shaft sleeve 4;

[0034] 81. Driving component one; 82. Driving component two; 83. Driving component three; 84. Driving component four. DETAILED DESCRIPTION

[0035] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0036] like Figures 1 to 5 As shown, the step shaft housing stamping device of an embodiment of the present invention includes a frame 1, an inner mold assembly, an outer mold assembly and a driving member 81.

[0037] like Figures 1 to 3 As shown, the inner die assembly includes a stamping shaft 21, a positioning plate 22, an inner die sleeve 23, a guide rod 24, an elastic member 25 and a baffle 26. The stamping shaft 21 is arranged on the frame 1, the positioning plate 22 is fixedly installed on the outer peripheral side of the stamping shaft 21, the inner die sleeve 23 is movably sleeved on the outer peripheral side of the stamping shaft 21, the guide rod 24 is parallel to the inner die sleeve 23, one end of which is fixedly connected to the inner die sleeve 23, and the other end movably passes through the positioning plate 22, the elastic member 25 is arranged between the guide rod 24 and the positioning plate 22, and when the inner die sleeve 23 is close to the positioning plate 22, the elastic member 25 will be compressed.

[0038] Specifically, the length direction of the frame 1 is defined as the left-right direction, the length direction of the stamping shaft 21 is in the same direction as the length direction of the frame 1, and can move in the left-right direction, the inner mold sleeve 23 can move relative to the stamping shaft 21 in the left-right direction, the right end of the guide rod 24 is fixedly connected to the inner mold sleeve 23, and the left end movably passes through the positioning plate 22, the elastic member 25 can be a spring, and is inserted into the outer peripheral side of the guide rod 24, the right end of the elastic member 25 is fixedly connected to the right end of the guide rod 24, and the left end is fixedly connected to a ring sleeve 31, the ring sleeve 31 is movably inserted into the outer peripheral side of the guide rod 24, and the ring sleeve 31 can stop against the right side surface of the positioning plate 22 under the push of the elastic member 25.

[0039] like Figures 1 to 3 As shown, the baffle plate 26 is rotatably connected to the punch shaft 21, the positioning plate 22 is located between the baffle plate 26 and the inner mold sleeve 23, and the distance between the baffle plate 26 and the positioning plate 22 is adjustable. The baffle plate 26 is provided with a through hole 1 for the guide rod 24 to pass through.

[0040] Specifically, a sleeve 32 is sleeved on the stamping shaft 21, and the sleeve 32 is located on the left side of the positioning plate 22 and can move along the length direction of the stamping shaft 21. The baffle 26 is rotatably mounted on the outer peripheral side of the sleeve 32, so that the baffle 26 and the stamping shaft 21 can be rotatably connected. A plurality of sockets 211 are opened on the stamping shaft 21 along its length direction, and a plug rod 33 is movably inserted on the sleeve 32, and the plug rod 33 can be inserted into the socket 211. By adjusting the position of the socket 211 into which the plug rod 33 is inserted, The position of the shaft sleeve 32 can be adjusted, that is, the distance between the baffle plate 26 and the positioning plate 22 can be adjusted. When the baffle plate 26 rotates to the point where the through hole 1 is directly opposite to the guide rod 24, a leftward force is applied to the inner mold sleeve 23, the guide rod 24 passes through the through hole 1, and the inner mold sleeve 23 moves to the left. When the through hole 1 is not directly opposite to the guide rod 24, a leftward force is applied to the inner mold sleeve 23, and when the baffle plate 26 stops the guide rod 24, the inner mold sleeve 23 cannot continue to move to the left.

[0041] In addition, a spring is provided between the insertion rod 33 and the shaft sleeve 32, and the two ends of the spring are fixedly connected to the insertion rod 33 and the shaft sleeve 32 respectively, so that the insertion rod 33 can be stably inserted into the insertion hole 211.

[0042] like Figures 1 to 3 As shown, the frame 1 is also provided with a driving component 4 for driving the baffle 26 to rotate, and the driving component 4 includes a motor 41, a gear 42 and a ring gear 43. The frame 1 is slidably connected with a base plate 11, and the base plate 11 can slide in the left and right directions. The base plate 11 is fixedly connected to the shaft sleeve 32, the motor 41 is fixedly mounted on the base plate 11, the gear 42 is fixedly mounted on the output shaft of the motor 41, and the ring gear 43 is fixedly mounted on the outer peripheral side of the baffle 26 and meshed with the gear 42, so as to control the operation of the motor 41, and the baffle 26 can be driven to rotate through the meshing of the ring gear 43 and the gear 42.

[0043] The outer mold assembly can form a cavity for accommodating the blank, and the cavity is opposite to the inner mold assembly. The outer mold assembly is arranged on the right side of the inner mold assembly. The output end of the driving member 81 is fixedly connected to the stamping shaft 21 and can drive the inner mold assembly to approach or move away from the cavity. Specifically, the driving member 81 can be a hydraulic cylinder, whose cylinder end is fixedly connected to the frame 1, and the output end on the right side is fixedly connected to the left end of the stamping shaft 21. The driving member 81 can be controlled to retract and retract, and can drive the stamping shaft 21 to move left and right.

[0044] When stamping the step shaft, the blank is placed in the cavity of the outer mold assembly. When there is no need to stamp a step inside the blank, the baffle 26 is driven to rotate by controlling the motor 41 so that the baffle 26 rotates until the through hole 1 is opposite to the guide rod 24. At this time, the driving member 81 is controlled to extend and drive the stamping shaft 21 to move right. When the stamping shaft 21 moves to the right, it will drive the sleeve 32, the bottom plate 11 and the motor 41 to move right synchronously. The stamping shaft 21 moving to the right will squeeze the blank and punch an inner hole without a step in the blank. When the stamping shaft 21 moves to the right and stops at the right end of the inner mold sleeve 23 and the blank, as the stamping shaft 21 continues to move to the right, the blank will apply a leftward force to the inner mold sleeve 23, and the inner mold sleeve 23 and the guide rod 24 will move left relative to the stamping shaft 21, the guide rod 24 will pass through the through hole 1, and the elastic member 25 will be compressed.

[0045] When it is necessary to punch an inner hole with a step inside the blank, according to the position of the required step, the insertion rod 33 is inserted into the insertion hole 211 at the appropriate position, and the position of the shaft sleeve 32 is adjusted, so that the distance between the baffle plate 26 and the positioning plate 22 can be adjusted, and the baffle plate 26 is driven to rotate at the same time, so that the through hole 1 is not directly opposite to the guide rod 24. At this time, the driving member 81 is controlled to extend, and the punching shaft 21 is driven to move to the right. The right end of the punching shaft 21 will first contact the blank. The blank is punched, when the punching shaft 21 moves to the right until the right end of the inner die sleeve 23 stops against the blank, as the punching shaft 21 continues to move to the right, the blank will exert a leftward force on the inner die sleeve 23, and the inner die sleeve 23 and the guide rod 24 will move to the left relative to the punching shaft 21. When the guide rod 24 stops against the baffle 26, as the punching shaft 21 continues to move to the right, the inner die sleeve 23 will squeeze the blank and punch, that is, an inner hole with a step can be punched in the blank.

[0046] like Figure 2 and Figure 3 As shown, the inner mold assembly also includes a baffle plate 27, which is rotatably connected to the punching shaft 21, and a baffle plate 26 is located between the positioning plate 1 22 and the baffle plate 27, and the distance between the baffle plate 27 and the positioning plate 1 22 is adjustable.

[0047] Specifically, baffle plate 27 is parallel to baffle plate 1 26 and is arranged on the left side of baffle plate 1 26. A sleeve 24 is sleeved on the stamping shaft 21, and the sleeve 24 can slide in the left and right directions. Baffle plate 27 is rotatably installed on the outer peripheral side of the sleeve 24, so that the rotational connection between baffle plate 27 and the stamping shaft 21 can be realized. A plug rod 24 is movably inserted into the sleeve 24, and the plug rod 24 can be inserted into the socket 211. By adjusting the position of the socket 211 into which the plug rod 24 is inserted, the position of the sleeve 24 can be adjusted, that is, the distance between baffle plate 27 and positioning plate 1 22 can be adjusted. In addition, a spring is provided between the plug rod 24 and the sleeve 24, and the two ends of the spring are fixedly connected to the plug rod 24 and the sleeve 24, respectively, so that the plug rod 24 can be stably inserted into the socket 211.

[0048] like Figure 2 and Figure 3 As shown, the frame 1 is also provided with a driving component 25 for driving the baffle 27 to rotate, and the driving component 25 includes a motor 251, a gear 252 and a ring gear 253. The frame 1 is slidably connected with a base plate 251, and the base plate 251 can slide in the left and right directions. The base plate 251 is fixedly connected to the shaft sleeve 254. The motor 251 is fixedly mounted on the base plate 251, and the gear 252 is fixedly mounted on the output shaft of the motor 251. The ring gear 253 is fixedly mounted on the outer peripheral side of the baffle 252 and meshes with the gear 252. Therefore, the operation of the motor 251 is controlled, and the baffle 252 can be driven to rotate through the meshing of the ring gear 253 and the gear 252.

[0049] like Figure 2 and Figure 3 As shown, the inner mold assembly also includes an inner mold sleeve 28, a guide rod 29 and an elastic member 30. The inner mold sleeve 28 is movably sleeved on the outer peripheral side of the inner mold sleeve 1 23. The guide rod 29 is parallel to the inner mold sleeve 28, one end of which is fixedly connected to the inner mold sleeve 28, and the other end movably passes through the positioning plate 1 22. The elastic member 30 is arranged between the guide rod 29 and the positioning plate 1 22. When the inner mold sleeve 28 is close to the positioning plate 1 22, the elastic member 30 will be compressed.

[0050] Specifically, the right end of the inner mold sleeve 28 is flush with the right end of the inner mold sleeve 1 23, and the inner mold sleeve 28 can move in the left and right directions relative to the inner mold sleeve 1 23. The right end of the guide rod 29 is fixedly connected to the inner mold sleeve 28, and the left end movably passes through the positioning plate 1 22. The elastic member 2 30 can be a spring and is inserted into the outer peripheral side of the guide rod 29. The right end of the elastic member 2 30 is fixedly connected to the guide rod 29, and the left end is fixedly connected to a ring sleeve 26. The ring sleeve 26 is movably inserted into the outer peripheral side of the guide rod 29, and the ring sleeve 26 can stop against the right side surface of the positioning plate 22 under the push of the elastic member 2 30.

[0051] The second inner mold sleeve 28 is provided with an avoidance groove 281 , which corresponds to the first guide rod 24 , so that the second inner mold sleeve 28 can move leftward relative to the first inner mold sleeve 23 .

[0052] like Figure 2 and Figure 3 As shown, the baffle plate 1 26 is provided with a through hole 2 for the guide rod 29 to pass through. When the guide rod 29 and the through hole 2 are facing each other, the baffle plate 1 26 can block the guide rod 1 24 .

[0053] Control baffle plate 1 26 to rotate so that guide rod 29 is opposite to through hole 2, and adjust baffle plate 1 26 and baffle plate 27 to corresponding positions. At this time, when performing step shaft stamping, control the stamping shaft 21 to move right to stamp the blank. During the stamping process, the blank will exert a leftward force on the inner die sleeve 1 23 and the inner die sleeve 28, and the inner die sleeve 1 23 and guide rod 1 24 will move left relative to the stamping shaft 21 until baffle plate 1 26 blocks the guide rod 1 24, and the inner die sleeve 28 and guide rod 29 will also move left relative to the stamping shaft 21, and guide rod 29 will pass through through hole 2 until baffle plate 27 blocks the guide rod 29. As the stamping shaft 21 continues to move right, the inner die sleeve 1 23, the inner die sleeve 28 and the stamping shaft 21 will extrude the blank together, and can stamp an inner hole with two steps in the blank.

[0054] It can be understood that, in the above-mentioned stamping process, the guide rod 29 has not yet contacted the baffle 27 until the stamping is completed, and at this time, an inner hole with a step can be stamped into the blank.

[0055] like Figure 2 and Figure 3 As shown, baffle plate 1 26 is provided with through hole 3 and through hole 4 through which guide rod 1 24 and guide rod 2 29 can pass at the same time. Baffle plate 1 26 is controlled to rotate so that guide rod 1 24 and guide rod 2 29 are respectively opposite to through hole 3 and through hole 4, driving punching shaft 21 to move rightward and extrude and punch the blank. When punching shaft 21 is pressed into the blank for a set distance, the blank will push guide rod 1 24 and guide rod 2 29 to move leftward and pass through through hole 3 and through hole 4 respectively. In this process, if baffle plate 27 does not block guide rod 1 24 and guide rod 2 29, an inner hole without a step can be punched in the blank. If baffle plate 27 blocks guide rod 1 24 and guide rod 2 29 at the set position, as the punching shaft 21 continues to move rightward, an inner hole with a step can be punched in the blank.

[0056] like Figure 2 and Figure 3 As shown, the baffle plate 27 is provided with a through hole 5 through which the guide rod 29 can pass. When the through hole 5 is directly opposite to the guide rod 29, the baffle plate 27 can stop against the guide rod 1 24.

[0057] When stamping the step shaft, first control the baffle 26 to rotate so that the guide rod 1 24 and the guide rod 2 29 are opposite to the through hole 3 and the through hole 4 respectively, then control the baffle 2 27 to rotate so that the through hole 5 is opposite to the guide rod 2 29, and adjust the baffle 1 26 and the baffle 2 27 to the corresponding positions respectively, drive the stamping shaft 21 to move to the right and extrude and punch the blank. During the punching process, the guide rod 1 24 and the guide rod 2 29 will pass through the through hole 3 and the through hole 4 respectively, and the guide rod 2 29 will pass through the through hole 5, and the baffle 2 27 will stop the guide rod 1 24. In this state, an inner hole with a step can be punched in the blank.

[0058] like Figure 2 and Figure 3 As shown, baffle plate 27 is provided with through hole 6 and through hole 7 through which guide rod 1 24 and guide rod 2 29 can pass simultaneously. When stamping the step shaft, baffle plate 1 26 is first controlled to rotate so that guide rod 1 24 and guide rod 2 29 are respectively opposite to through hole 3 and through hole 4, and then baffle plate 2 27 is controlled to rotate so that guide rod 1 24 and guide rod 2 29 are respectively opposite to through hole 6 and through hole 7. When the blank is stamped in this state, an inner hole without a step can be stamped in the blank.

[0059] like Figure 1 , Figure 4 and Figure 5 As shown, the outer mold assembly includes a support shaft 61, a sleeve 62, a positioning plate 2 63, an outer mold sleeve 1 64, an outer mold sleeve 2 65, a guide rod 3 66, a guide rod 4 67, an elastic member 3 68, an elastic member 4 69, a baffle 3 70 and a baffle 4 71.

[0060] The axial direction of the support shaft 61 extends in the left-right direction and is fixedly connected to the frame 1. The sleeve 62 is movably sleeved on the outer peripheral side of the support shaft 61. A driving member 82 for driving the sleeve 62 to move left and right is installed on the frame 1. The driving member 82 can be a hydraulic cylinder, and its cylinder end is fixedly connected to the frame 1, and the output end on the left is fixedly connected to the right end of the sleeve 62. The extension and retraction of the driving member 82 can be controlled to drive the sleeve 62 to move left and right.

[0061] The outer mold sleeve 1 64 is located on the left side of the sleeve 62 and is movably sleeved on the outer peripheral side of the support shaft 61. The outer mold sleeve 2 65 is movably sleeved on the outer peripheral side of the outer mold sleeve 2 65. The left and right ends of the outer mold sleeve 1 64 and the outer mold sleeve 2 65 are arranged flush. The positioning plate 2 63 is located on the right side of the outer mold sleeve 1 64 and is fixedly installed on the outer peripheral side of the support shaft 61. The length directions of the guide rod 3 66 and the guide rod 4 67 are extended in the left and right directions. The left end of the guide rod 3 66 is fixedly connected to the outer mold sleeve 1 64, and the right end movably passes through the positioning plate 2 63. The left end of the guide rod four 67 is fixedly connected to the outer mold sleeve two 65, and the right end is movable through the positioning plate two 63. The right ends of the guide rod three 66 and the guide rod four 67 are arranged flush. The elastic member three 68 can be a spring and is sleeved on the outer peripheral side of the guide rod three 66. The left and right ends of the elastic member three 68 are respectively fixedly connected to the guide rod three 66 and the positioning plate two 63. The elastic member four 69 can be a spring and is sleeved on the outer peripheral side of the guide rod four 67. The left and right ends of the elastic member four 69 are respectively fixedly connected to the guide rod four 67 and the positioning plate two 63.

[0062] The movable sleeve on the outer peripheral side of the sleeve 62 is provided with a sleeve three 72 and a sleeve four 73. The position of the sleeve three 72 in the length direction of the sleeve 62 can be adjusted. The baffle three 70 is rotatably installed on the outer peripheral side of the sleeve three 72. The sleeve four 73 is located on the right side of the sleeve three 72. The position of the sleeve four 73 in the length direction of the sleeve 62 can be adjusted. The baffle four 71 is rotatably installed on the outer peripheral side of the sleeve four 73. Among them, the adjustment method of the position of the sleeve three 72 in the length direction of the sleeve 62 and the adjustment method of the position of the sleeve 62 four in the length direction of the sleeve 62 are the same as the adjustment method of the position of the sleeve one 32 on the stamping shaft 21 in principle, and they are not repeated here. After the sleeve three 72 is fixed to the sleeve 62, the baffle three 70 and the sleeve three 72 can move left and right synchronously with the sleeve 62. After the sleeve four 73 is fixed to the sleeve 62, the baffle four 71 and the sleeve four 73 can move left and right synchronously with the sleeve 62.

[0063] The frame 1 is also provided with a driving component three 83 for driving the baffle three 70 to rotate and a driving component four 84 for driving the baffle four 71 to rotate. The implementation method of the driving component three 83 and the driving component four 84 is the same as the implementation method of the driving component one 4, and will not be repeated here.

[0064] A support frame 13 for placing blanks is installed on the frame 1 between the inner mold assembly and the outer mold assembly. The height of the support frame 13 is adjustable so that the center of the blank placed on the support frame 13 is aligned with the center of the cavity in the outer mold assembly.

[0065] like Figure 1 , Figure 4 and Figure 5 As shown, the baffle plate 3 70 is provided with a through hole 1 for the guide rod 3 66 to pass through, and when the guide rod 3 66 is facing the through hole 1, the baffle plate 3 70 can stop the guide rod 4 67.

[0066] When stamping the stepped shaft, first, the baffle plate 3 70 is controlled to rotate so that the guide rod 3 66 is aligned with the perforation 1, and then the baffle plate 3 70 and the baffle plate 4 71 are adjusted to the corresponding positions. Next, the driving member 2 82 is controlled to extend, and the driving sleeve 62 and the baffle plate 3 70 and the baffle plate 4 71 mounted on the sleeve 62 move to the left. The baffle plate 3 70 will push the guide rod 4 67 and the outer mold sleeve 2 65 connected to the guide rod 4 67 to move to the left, the elastic member 4 69 will be stretched, and the guide rod 3 66 will pass through the perforation 1.

[0067] When the right end of the guide rod 3 66 just stops against the baffle 4 71, the outer mold sleeve 1 64 and the support shaft 61 do not move relative to each other. Under the premise that the left end of the outer mold sleeve 1 64 is flush with the left end of the support shaft 61, the outer mold sleeve 1 64, the outer mold sleeve 2 65 and the support shaft 61 will form a cavity without steps. The blank is placed on the support frame 13, and the inner mold assembly is controlled to move to the right, so that the blank can be pushed into the cavity and stamped. At this time, there is no step on the outer peripheral surface of the stamped finished product.

[0068] When the right end of the guide rod three 66 stops against the baffle four 71, as the baffle four 71 continues to move to the left a set distance, the outer mold sleeve one 64 will move to the left, the elastic member three 68 will be stretched, and the outer mold sleeve one 64, the outer mold sleeve two 65 and the support shaft 61 will form a cavity with a step. At this time, when the blank is stamped by the inner mold assembly and the outer mold assembly, the blank will be deformed in the cavity, and the outer peripheral surface of the final product will have a step.

[0069] like Figure 1 , Figure 4 and Figure 5 As shown, baffle plate three 70 is provided with perforation two and perforation three for guide rod three 66 and guide rod four 67 to pass through at the same time. When stamping the step shaft, baffle plate three 70 is controlled to rotate so that guide rod three 66 is opposite to perforation two, and guide rod four 67 is opposite to perforation three, and then baffle plate four 71 is adjusted to the corresponding position. Next, sleeve 62 and baffle plate three 70 and baffle plate four 71 installed on sleeve 62 are controlled to move left, guide rod three 66 and guide rod four 67 will pass through perforation two and perforation three respectively, baffle plate four 71 will block guide rod three 66 and guide rod four 67, and as baffle plate four 71 continues to move to the left, it will push outer die sleeve one 64 and outer die sleeve two 65 to move left, outer die sleeve one 64, outer die sleeve two 65 and support shaft 61 will form a cavity without steps. At this time, when the blank is stamped by inner die assembly and outer die assembly, there will be no steps on the outer peripheral surface of the stamped finished product.

[0070] It can be understood that, referring to the installation method of outer mold sleeve 1 64 and outer mold sleeve 2 65, outer mold sleeves are continued to be added to the outer peripheral surface of outer mold sleeve 2 65, referring to the installation method of baffle three 70 and baffle four 71, baffles are continued to be added to the sleeve 62, and corresponding perforations are set on baffle four 71 and the newly added baffles, so that the outer mold assembly can form cavities with different numbers of steps, and can form cavities with the same number of steps but different diameters and different lengths.

[0071] The step shaft housing stamping method of the present invention is described below.

[0072] A stamping method based on the above-mentioned stepped shaft housing stamping device comprises the following steps:

[0073] placing the blank into the cavity of the outer mold assembly;

[0074] According to the required shape of the inner wall of the stepped shaft housing, adjust the distance between the baffle plate 26 and the positioning plate 22;

[0075] According to the required shape of the inner wall of the stepped shaft housing, the baffle plate 26 is controlled to rotate so that the through hole 1 is directly opposite to the guide rod 24, or the through hole 1 is misaligned with the guide rod 24;

[0076] The control driving member 81 drives the inner mold assembly to move toward the blank and punch the blank.

[0077] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A stepped shaft housing stamping device, comprising a frame, characterized in that: The invention also includes an inner mold assembly, an outer mold assembly and a driving member. The inner mold assembly includes a stamping shaft, a positioning plate, an inner mold sleeve, a guide rod, an elastic member and a baffle. The stamping shaft is arranged on a frame. The positioning plate is fixedly installed on the outer peripheral side of the stamping shaft. The inner mold sleeve is movably arranged on the outer peripheral side of the stamping shaft. The guide rod is parallel to the inner mold sleeve, one end of which is fixedly connected to the inner mold sleeve, and the other end movably passes through the positioning plate. The elastic member is arranged between the guide rod and the positioning plate. When the inner mold sleeve approaches the positioning plate, the elastic member will be compressed. The baffle is rotatably connected to the stamping shaft. The positioning plate is located between the baffle and the inner mold sleeve, and the distance between the baffle and the positioning plate is adjustable. The baffle is provided with a through hole for the guide rod to pass through. The outer mold assembly can form a cavity for accommodating the blank, and the cavity is directly opposite to the inner mold assembly. The output end of the driving member is fixedly connected to the stamping shaft and can drive the inner mold assembly to approach or move away from the cavity.

2. The stepped shaft housing punching device according to claim 1, characterized in that: The inner mold assembly also includes baffle plate 2, which is rotatably connected to the punching shaft. Baffle plate 1 is located between positioning plate 1 and baffle plate 2, and the distance between baffle plate 2 and positioning plate 1 is adjustable.

3. The stepped shaft housing punching device according to claim 2, characterized in that: The inner mold assembly also includes an inner mold sleeve 2, a guide rod 2 and an elastic member 2. The inner mold sleeve 2 is movably sleeved on the outer peripheral side of the inner mold sleeve 1. The guide rod 2 is parallel to the inner mold sleeve 2, one end of which is fixedly connected to the inner mold sleeve 2, and the other end movably passes through the positioning plate 1. The elastic member 2 is arranged between the guide rod 2 and the positioning plate 1. When the inner mold sleeve 2 is close to the positioning plate 1, the elastic member 2 will be compressed.

4. The stepped shaft housing punching device according to claim 3, characterized in that: The baffle plate 1 is provided with a through hole 2 through which the guide rod 2 can pass. When the guide rod 2 and the through hole 2 are facing each other, the baffle plate 1 can block the guide rod 1.

5. The stepped shaft housing punching device according to claim 3, characterized in that: The baffle plate 1 is provided with a through hole 3 and a through hole 4 through which the guide rod 1 and the guide rod 2 can pass at the same time.

6. The stepped shaft housing punching device according to claim 5, characterized in that: The baffle plate 2 is provided with a through hole 5 through which the guide rod 2 can pass. When the through hole 5 is directly opposite to the guide rod 2, the baffle plate 2 can stop against the guide rod 1.

7. The stepped shaft housing punching device according to claim 5, characterized in that: The baffle plate 2 is provided with a through hole 6 and a through hole 7 through which the guide rod 1 and the guide rod 2 can pass at the same time.

8. The stepped shaft housing punching device according to claim 3, characterized in that: The inner mold sleeve 2 is provided with an avoidance groove, which corresponds to the guide rod 1.

9. A stamping method based on the stamping device for stepped shaft housing according to any one of claims 1 to 8, characterized in that: The following steps are involved: placing the blank into the cavity of the outer mold assembly; According to the required shape of the inner wall of the stepped shaft housing, adjust the distance between the baffle plate 1 and the positioning plate 1; According to the required shape of the inner wall of the stepped shaft housing, the baffle plate 1 is controlled to rotate so that the through hole 1 and the guide rod 1 are directly opposite, or the through hole 1 and the guide rod 1 are misaligned; The control driving member 1 drives the inner mold assembly to move toward the blank and punch the blank.

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