Die for punching working cylinder from inside to outside

Abstract

The utility model discloses a die for punching a working cylinder from inside to outside, and belongs to the technical field of automobile part machining. Comprising a bottom plate, a fixing block is installed on one side of the top of the bottom plate, a rod core is installed on the side face of the fixing block, a punch is installed on the outer side of the rod core, the diameter of the rod core is smaller than the inner diameter of a working cylinder, the rod core is sleeved with the working cylinder, and a limiting block is installed on the top face of the bottom plate and limits the position of the working cylinder; a groove is formed in the bottom surface of the top plate, an arched block is mounted in the groove, a through hole is formed in the bottom surface of the arched block, the through hole is located right above the punch, and the arched block extrudes the working cylinder; according to the inside-to-outside punching die applied to the working cylinder, punching is conducted from the inside of the working cylinder to the outside, burrs generated during punching can be left on the outer surface of the working cylinder, and therefore the influence of the burrs on the inner diameter of the working cylinder and the smoothness of the inner surface of the working cylinder is eliminated.

Description

TECHNICAL FIELD

[0001] The application relates to the field of automobile part processing, and in particular to a work cylinder from inside to outside punching die. BACKGROUND

[0002] With the continuous development and progress of society, people have put forward more stringent requirements for the safety and comfort of automobiles in the process of automobile consumption. As a key component for ensuring the safety of automobile driving and the comfort of riding, the performance of the automobile shock absorber directly affects the overall quality of the automobile. Among many types of automobile shock absorbers, the CDC shock absorber is highly concerned due to its excellent performance, and the working cylinder as the core part of the CDC shock absorber, the processing quality of the working cylinder plays a decisive role in the performance of the shock absorber.

[0003] The inner diameter of the working cylinder has strict requirements, and the standards for roughness and cleanliness are high. The traditional ordinary from outside to inside punching process has obvious defects in actual application. When the punching process is used, burrs generated by punching are left on the inner surface of the part. These burrs not only affect the size accuracy of the inner diameter of the working cylinder, leading to unqualified size, but also may damage the smoothness of the inner surface of the working cylinder, reducing the overall quality of the working cylinder. Once the quality of the working cylinder is a problem, it will have a negative impact on the normal operation of the CDC shock absorber, and then affect the damping effect of the automobile, and cannot meet the growing demand of people for the safety and comfort of the automobile. CONTENT OF THE INVENTION

[0004] In view of the above problems, the application provides a working cylinder from inside to outside punching die, which can make the burrs generated by punching remain on the outer surface of the working cylinder, thereby eliminating the influence of the burrs on the inner diameter of the working cylinder and the smoothness of the inner surface of the working cylinder.

[0005] In order to achieve the purpose of the application, the application provides the following technical solutions:

[0006] The application provides a punch die from inside to outside of a working cylinder, which comprises a bottom plate, a fixed block is arranged on one side of the top of the bottom plate, a rod core is arranged on the side of the fixed block, a punch is arranged on the outer side of the rod core, the diameter of the rod core is smaller than the inner diameter of the working cylinder, the outer side of the rod core is sleeved with the working cylinder, a limiting block is arranged on the top surface of the bottom plate, the position of the working cylinder is limited by the limiting block, a top plate is arranged on the top surface of the bottom plate, a groove is arranged on the bottom surface of the top plate, an arc-shaped block is arranged in the groove, a through hole is arranged on the bottom surface of the arc-shaped block and is located directly above the punch, the arc-shaped block extrudes the working cylinder, the working cylinder is sleeved on the outer side of the rod core from one end of the rod core, and the working cylinder is moved to the position after abutting against one end of the rod core; when the output end of the punch pushes the top plate, the arc-shaped block pushes the working cylinder, the working cylinder moves downward and abuts against the punch, the punch punches the working cylinder from inside to outside along with the continuous downward movement of the working cylinder, and the waste produced by the punching is arranged in the through hole.

[0007] In a possible implementation, the limiting block comprises a connecting seat arranged on the top surface of the bottom plate, the top surface of the connecting seat is provided with an installation cavity, a supporting block is arranged in the installation cavity, a pair of openings are arranged on the bottom surface of the supporting block, a spring is arranged in the openings, the spring is connected with the installation cavity, an arc-shaped groove is arranged on the top surface of the supporting block, and a positioning rod is slidably arranged on the side surface of the supporting block; when the punching is completed and the arc-shaped block no longer applies pressure to the working cylinder, the spring is reset, the supporting block is lifted, the working cylinder is lifted and separated from the punch.

[0008] In a possible implementation, a pair of first limiting rods are arranged in the installation cavity, a pair of first limiting holes are arranged on the bottom surface of the installation cavity, a pair of second limiting rods are arranged on the bottom surface of the supporting block, and a pair of second limiting holes are arranged on the bottom surface of the supporting block; the first limiting rods slide in the second limiting holes, and the second limiting rods slide in the first limiting holes; the above-mentioned limiting mode is used to make the supporting block move vertically stably.

[0009] In a possible implementation, a pair of guide holes are arranged on the bottom surface of the top plate, a pair of guide columns are arranged on the top surface of the connecting seat, and the guide columns slide in the guide holes; the guide columns and the guide holes are used to make the top plate move vertically stably.

[0010] In a possible implementation, a connecting head is arranged on the top surface of the top plate, the connecting head is provided with a sliding groove in the inside, the sliding groove is communicated with the through hole, and a push rod slides in the sliding groove; when the waste is arranged in the through hole, the push rod is pushed to move upward, at this time, the waste can be taken out by pushing the push rod downward, and the connecting head and the output end of the punch are connected by bolts or clamps.

[0011] In a possible implementation, the top end of the push rod is provided with a limiting head, and the diameter of the limiting head is greater than the diameter of the sliding groove, so that the push rod is prevented from falling into the sliding groove.

[0012] In a possible implementation, the outer side of the rod core is provided with a mounting groove, and the punch is mounted in the mounting groove through bolts, so that the punch is convenient to replace for the user.

[0013] The working cylinder from inside to outside punching die provided in the application adopts the inside-to-outside punching mode, so that burrs generated in punching are left on the outer surface of the working cylinder, and the adverse effects of the burrs on the inner diameter size precision and the inner surface finish of the working cylinder are avoided. This ensures high-quality processing of the working cylinder and meets the high-precision requirement of the working cylinder for automobile shock absorbers, plays a key role in improving the performance of CDC shock absorbers and further ensuring the driving safety and riding comfort of automobiles. BRIEF DESCRIPTION OF DRAWINGS

[0014] The accompanying drawings are included to provide a further understanding of the application, and constitute a part of the specification, illustrate the application together with the embodiments thereof, and explain the application without limiting the application;

[0015] Figure 1 A perspective structural schematic view of the working cylinder from inside to outside punching die is disclosed for the embodiments of the application;

[0016] Figure 2 A first exploded structural schematic view of the working cylinder from inside to outside punching die is disclosed for the embodiments of the application;

[0017] Figure 3 A second exploded structural schematic view of the working cylinder from inside to outside punching die is disclosed for the embodiments of the application;

[0018] Figure 4 A Figure 3 A structural enlarged schematic view of the middle A structure;

[0019] Figure 5 A bottom view of the second exploded structure of the working cylinder from inside to outside punching die is disclosed for the embodiments of the application;

[0020] Figure 6 A Figure 5 A structural enlarged schematic view of the middle B structure.

[0021] In the drawings: 1, bottom plate; 2, fixed block; 3, rod core; 4, working cylinder; 5, connecting seat; 6, top plate; 7, connecting head; 8, push rod; 9, guide column; 10, supporting block; 11, guide hole; 12, mounting cavity; 13, positioning rod; 14, arc-shaped groove; 15, punch; 16, spring; 17, arched block; 18, through hole. DETAILED DESCRIPTION

[0022] In order to make the purposes, technical solutions and advantages of the present application clearer, the technical solutions in the present application will be described clearly and completely below in conjunction with the accompanying drawings in the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort belong to the scope of protection of the present application.

[0023] The terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features; in the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0024] Embodiment 1

[0025] Figures 1-6 A working cylinder from inside to outside piercing die provided by the embodiment of the present application comprises: a bottom plate 1, a fixed block 2 is installed on one side of the top of the bottom plate 1, a rod core 3 is installed on the side surface of the fixed block 2, a punch 15 is installed on the outer side of the rod core 3, the diameter of the rod core 3 is smaller than the inner diameter of a working cylinder 4, the working cylinder 4 is sleeved on the outer side of the rod core 3, a limiting block is installed on the top surface of the bottom plate 1, the limiting block limits the position of the working cylinder 4, a top plate 6 is arranged on the top surface of the bottom plate 1, the bottom surface of the top plate 6 has a groove, an arcuate block 17 is installed in the groove, a through hole 18 is arranged on the bottom surface of the arcuate block 17, the through hole 18 is located directly above the punch 15, the arcuate block 17 extrudes the working cylinder 4, the working cylinder 4 is sleeved on the outer side of the rod core 3 from one end of the rod core 3, and when the working cylinder 4 abuts against one end of the rod core 3, the working cylinder 4 is moved to the position, when the output end of the punch pushes the top plate 6, the arcuate block 17 pushes the working cylinder 4, so that the working cylinder 4 moves downward and abuts against the punch 15, with the continuous downward movement of the working cylinder 4, the punch 15 pierces the working cylinder 4 from inside to outside, and the waste produced by the piercing is arranged in the through hole 18.

[0026] In a possible implementation, the limiting block comprises a connecting seat 5 installed on the top surface of the bottom plate 1, the top surface of the connecting seat 5 is provided with an installation cavity 12, a supporting block 10 is arranged in the installation cavity 12, a pair of openings are arranged on the bottom surface of the supporting block 10, a spring 16 is installed in the openings, the spring 16 is connected with the installation cavity 12, an arc-shaped groove 14 is arranged on the top surface of the supporting block 10, and a positioning rod 13 is slidably arranged on the side surface of the supporting block 10, when the piercing is completed and the arcuate block 17 no longer applies pressure to the working cylinder 4, the spring 16 which is compressed resets, so that the supporting block 10 rises, thereby jacking up the working cylinder 4 and separating the working cylinder 4 from the punch 15.

[0027] In a possible implementation, a pair of first limiting rods are installed inside the mounting cavity 12, a pair of first limiting holes are formed on the bottom surface of the mounting cavity 12, a pair of second limiting rods are installed on the bottom surface of the supporting block 10, a pair of second limiting holes are formed on the bottom surface of the supporting block 10, the first limiting rods slide in the second limiting holes, and the second limiting rods slide in the first limiting holes, so that the supporting block 10 moves vertically stably.

[0028] In a possible implementation, a pair of guide holes 11 are formed on the bottom surface of the top plate 6, a pair of guide columns 9 are installed on the top surface of the connecting seat 5, the guide columns 9 slide in the guide holes 11, so that the top plate 6 moves vertically stably.

[0029] In a possible implementation, a connecting head 7 is installed on the top surface of the top plate 6, the connecting head 7 has a sliding groove inside, the sliding groove is communicated with the through hole 18, a push rod 8 slides in the sliding groove, when the waste enters the through hole 18, the push rod 8 is pushed to move upward, at this time, the push rod 8 is pushed downward, so that the waste is taken out, the connecting head 7 and the output end of the punch are connected through bolts or clamps.

[0030] In a possible implementation, a limiting head is installed on the top end of the push rod 8, and the diameter of the limiting head is greater than the diameter of the sliding groove, so as to prevent the push rod 8 from falling into the sliding groove.

[0031] In a possible implementation, a mounting groove is formed on the outer side of the rod core 3, and the punch 15 is installed in the mounting groove through bolts, so as to facilitate the user to replace the punch 15.

[0032] It should be noted that the standard parts used in the present application can be purchased from the market, and can be customized according to the description and drawings. The specific connection mode of each part adopts the conventional means such as bolts, rivets and welding in the prior art. The mechanical parts and equipment adopt the conventional types in the prior art. The control mode is automatically controlled through the control cabinet. The connection mode of the mold and the punch and the working mode of the punch can be realized by simple connection and programming of the person skilled in the art. It belongs to the common knowledge in the art. The present application mainly protects the mechanical device, so the control mode and the circuit connection will not be explained in detail.

[0033] The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them. The present application is not limited to the exact structure described above and shown in the drawings. The specific implementation of the present application cannot be limited to the above description. Various changes and modifications made by those skilled in the art without departing from the concept of the present application should be considered within the scope of protection of the present application.

Claims

1. An inside-out punch die for a working cylinder, characterized by, Include: The bottom plate (1), the top side of the bottom plate (1) is provided with a fixed block (2), the side of the fixed block (2) is provided with a rod core (3), the outer side of the rod core (3) is provided with a punch (15), the diameter of the rod core (3) is less than the inner diameter of the working cylinder (4), the outer side of the rod core (3) is provided with a working cylinder (4), the top surface of the bottom plate (1) is provided with a limiting block, the limiting block limits the position of the working cylinder (4), the top surface of the bottom plate (1) is provided with a top plate (6), the bottom surface of the top plate (6) has a groove, the groove is provided with an arc block (17), the bottom surface of the arc block (17) is provided with a through hole (18), the through hole (18) is located directly above the punch (15), and the arc block (17) extrudes the working cylinder (4).

2. A die for internally piercing a cylinder, as set forth in claim 1, wherein, The limiting block includes a connecting seat (5) mounted on the top surface of the bottom plate (1), the top surface of the connecting seat (5) is provided with an installation cavity (12), the installation cavity (12) is provided with a supporting block (10), the bottom surface of the supporting block (10) is provided with a pair of openings, the openings are provided with springs (16), and the springs (16) are connected with the installation cavity (12), the top surface of the supporting block (10) is provided with an arc-shaped groove (14), and the side surface of the supporting block (10) is slidably provided with a positioning rod (13).

3. An inside-out ram cylinder piercing die according to claim 2, wherein, A pair of first limiting rods are installed in the installation cavity (12), a pair of first limiting holes are formed in the bottom surface of the installation cavity (12), a pair of second limiting rods are installed on the bottom surface of the supporting block (10), a pair of second limiting holes are formed in the bottom surface of the supporting block (10), the first limiting rods slide in the second limiting holes, and the second limiting rods slide in the first limiting holes.

4. A swage for punching a hole in a cylinder from the inside out as claimed in claim 2, wherein, A pair of guide holes (11) are formed in the bottom surface of the top plate (6), and a pair of guide columns (9) are installed on the top surface of the connecting seat (5) and slide in the guide holes (11).

5. A hole flaring die for a working cylinder according to claim 1, wherein A connecting head (7) is installed on the top surface of the top plate (6), the connecting head (7) has a sliding groove in the inside, the sliding groove is communicated with the through hole (18), and a push rod (8) slides in the sliding groove.

6. A hole flaring die for a working cylinder according to claim 5, wherein The top end of the push rod (8) is provided with a limiting head, and the diameter of the limiting head is greater than the diameter of the sliding groove.

7. An inside-out cylinder piercing die according to claim 1 wherein, An installation groove is formed in the outer side of the rod core (3), and the punch (15) is installed in the installation groove through bolts.

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