Pressing device

Abstract

The utility model discloses a press-fit device. The press-fit device comprises a first plate and a second plate, the pressing head part is arranged on the first plate piece and provided with a pressing tool and a guide rod piece, and the pressing tool is arranged around the guide rod piece in the circumferential direction; the second plate is oppositely arranged below the first plate; the base is arranged on the second plate towards the pressure head part and is provided with a groove for placing a first workpiece; and a second workpiece; when the first plate piece is driven to approach the second plate piece, the guide rod piece is in contact with the second workpiece in advance and is used for partially guiding the second workpiece into the first workpiece in advance; and along with continuous underground pressing of the first plate, the pressing tool makes contact with the second workpiece, the second workpiece is completely pressed into the first workpiece, and pressing assembly of the first workpiece and the second workpiece is completed.

Description

Technical Field

[0001] The invention relates to a mechanical processing device, and more particularly to a pressing device. Background Art

[0002] The pressing of workpieces requires the use of tooling. For example, connecting rods and bearings are generally assembled in pairs, that is, the bearings are pressed into the assembly holes of the connecting rods through tooling to form a component. However, when the bearings are pressed into the connecting rods, the existing tooling is not convenient to use, and the bearings are not pre-positioned, resulting in deviations in the pressed position, and thus unqualified products. Utility Model Content

[0003] The present application discloses a pressing device to solve the technical problems mentioned in the above background technology.

[0004] The following technical scheme is adopted: a pressing device comprises: a first plate; a pressing head part, which is arranged on the first plate and is provided with a pressing tool and a guide rod, wherein the pressing tool is arranged circumferentially around the guide rod; a second plate part, which is oppositely arranged below the first plate part; a base, which is arranged on the second plate part facing the pressing head part and is provided with a groove for placing the first workpiece; and a second workpiece; when the first plate part is driven to approach the second plate part, the guide rod part pre-contacts the second workpiece to pre-guide the second workpiece part into the first workpiece; as the first plate part is continuously pressed down, the pressing tool contacts the second workpiece and completely presses the second workpiece into the first workpiece to complete the pressing assembly of the first workpiece and the second workpiece.

[0005] In a possible implementation, the pressing tool is configured to radially press the assembly surfaces of the first workpiece and the second workpiece.

[0006] In a possible embodiment, the pressing tool is provided with a pre-pressing section, a stamping section and an auxiliary section in sequence in the radial direction relative to the guide rod, and the plane formed by the stamping section relative to the axial low point of the guide rod is higher than the planes formed by the pre-pressing section and the auxiliary section relative to the axial low point of the guide rod, the pre-pressing section is used to press the first workpiece into the second workpiece, and the stamping section is used to form radial extrusion on the assembly surfaces of the first workpiece and the second workpiece.

[0007] In a possible implementation manner, the pressing tool is a sheet-like structure and is arranged circumferentially around the guide rod at intervals.

[0008] In a possible implementation manner, the guide rod is telescopically disposed in the pressure head portion.

[0009] In a possible implementation, the support column is configured to hold the second workpiece above an assembly position of the second workpiece and the first workpiece, wherein the support column is telescopically disposed in the base.

[0010] In a possible embodiment, it also includes an intermediate seat, which is fixed to the second plate, and a guide member is provided between the base and the intermediate seat, which guides the base to move toward the intermediate seat when the base is pressed by the pressure head, and provides a restoring force for the base.

[0011] In a possible implementation manner, the guide rod is provided with a hole portion adapted to the outer contour of the support column.

[0012] In a possible implementation, the first plate is guided when moving toward the second plate.

[0013] In a possible implementation manner, the first workpiece includes a connecting rod; and the second workpiece includes a bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings in the specification which constitute a part of the present application are used to provide a further understanding of the present invention. The schematic implementation of the present invention and its description are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0015] Figure 1 It is a structural diagram of the pressing device of an embodiment of the present application.

[0016] Figure 2 yes Figure 1 Figure 4. The press-fit device after placing the connecting rod and bearing.

[0017] Figure 3 yes Figure 2 Top view of the base position after pressing is completed.

[0018] Figure 4 yes Figure 1 AA cross-sectional view.

[0019] Figure 5 yes Figure 4 Enlarged view of the structure at B.

[0020] Figure 6 yes Figure 1 Axial structural diagram of the pressure head.

[0021] In the figure: 10 pressing device, 11 pressing head, 11-1 fixed head, 11-2 pressing tool, 11-3 guide rod, 11-4 hole, 11-2-1 pre-pressing section, 11-2-2 stamping section, 11-2-3 auxiliary section, 13 guide column A, 15 second plate, 16 middle seat, 17 base, 18 spring A, 19 guide column terminal, 20 first plate, 21 locking seat, 22 groove, 23 support column, 24 connecting rod, 25 bearing, 26 assembly surface, 27 indentation groove, 28 spring B, 29 rubber part. Specific embodiments

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In this document, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features.

[0024] Unless the context requires otherwise, throughout the specification and claims, the term "comprise" and its other forms, such as the third person singular form "comprises" and the present participle form "comprising", are to be interpreted as having an open, inclusive meaning, that is, "including, but not limited to".

[0025] See also Figures 1 to 3 , Figure 1 This is a structural diagram of the pressing device of the embodiment of the present application, Figure 2 yes Figure 1 The picture of the press fitting device after placing the connecting rod and bearing, Figure 3 yes Figure 2 Top view of the base position after pressing is completed.

[0026] The embodiment of the present application discloses a pressing device 10, including a first plate 20, a pressing head 11, a second plate 15 and a base 17. The first plate 20 and the second plate 15 are roughly plate-shaped structures and are made of metal materials with a certain strength, such as stainless steel. The second plate 15 is arranged opposite to the first plate 20, and the first plate 20 is guided when moving toward the second plate 15. This is achieved by the cooperation of the guide post A13 and the guide post terminal 19, that is, the guide post terminal 19 is provided on the two sides of the first plate 20, one end of the guide post A13 is slidably matched with the guide post terminal 19, and the other end is fixed to the second plate 15; and the spring A18 sleeved on the guide post A13 keeps the first plate 20 and the second plate 15 in their respective positions and provides a restoring force for the first plate 20.

[0027] The locking seat 21 disposed above the first plate 20 locks the pressing head 11 under the first plate 20 through a fastener, and is provided with a pressing tool 11-2 and a guide rod 11-3, wherein the pressing tool 11-2 is arranged circumferentially around the guide rod 11-3. The base 17 is disposed on the second plate 15 toward the pressing head 11, and is provided with a groove 22 for placing the first workpiece; and a second workpiece. When the first plate 20 is driven to approach the second plate 15, the guide rod 11-3 pre-contacts the second workpiece to pre-guide the second workpiece part into the first workpiece. As the first plate 20 is continuously pressed down, the pressing tool 11-2 contacts the second workpiece and completely presses the second workpiece into the first workpiece, completing the pressing assembly of the first workpiece and the second workpiece.

[0028] See also Figure 2 and Figure 3 , exemplarily, a connecting rod 24 is used as the first workpiece; a bearing 25 is used as the second workpiece, the connecting rod 24 is placed in the groove 22, and the bearing 25 is placed in the assembly hole of the connecting rod (not shown in the figure) and guided into the assembly hole, and the bearing 25 is pressed into the assembly hole by the pressing tool 11-2 to complete the pressing operation.

[0029] In this embodiment, the pressing tool 11-2 is configured to radially press the assembly surfaces 26 of the first workpiece and the second workpiece. Figure 3 The arrow direction schematically shows the direction of the extrusion force. Due to the extrusion force formed on the assembly surface 26, the connecting rod 24 and the bearing 25 are assembled more compactly and are not easy to fall off. In the above scheme, the extrusion force on the assembly surface 26 is formed by the pressing tool while the pressing action is completed, and the action that is completed in two steps in the prior art is completed in one step, saving time and manufacturing costs.

[0030] See also Figure 5 and Figure 6 , Figure 5 yes Figure 4 The enlarged view of the structure at B, Figure 6yes Figure 1 The structural diagram of the pressing head. Furthermore, the pressing tool 11-2 is provided with a pre-pressing section 11-2-1, a stamping section 11-2-2 and an auxiliary section 11-2-3 in sequence relative to the radial direction r of the guide rod 11-3. The plane formed by the low point of the stamping section 11-2-2 relative to the axial direction a of the guide rod 11-3 is higher than the plane formed by the low point of the pre-pressing section 11-2-1 and the auxiliary section 11-2-3 relative to the axial direction a of the guide rod 11-3. The pre-pressing section 11-2-1 is used to press the first workpiece into the second workpiece, and the stamping section 11-2-2 is used to form radial extrusion on the assembly surface 26 of the first workpiece and the second workpiece. Taking the connecting rod 24 and the bearing 25 as an example, when the pressing device 10 is pressing, the pre-pressing section 11-2-1 contacts the bearing 25, and the stamping section 11-2-2 contacts the connecting rod 24. In the process of the pre-pressing section 11-2-1 pressing the bearing 25, the stamping section 11-2-2 forms an indentation groove 27 with a certain depth on the connecting rod 24. Preferably, the indentation groove 27 is formed close to the assembly surface 26 to increase the radial deformation of the inner wall of the assembly hole of the connecting rod, that is, radial extrusion of the assembly surface 26 is formed (such as Figure 3 Arrow direction) force.

[0031] It should be noted that the number, depth and interval of the indentation grooves 27 can be set according to actual design requirements, and are not particularly limited in this embodiment.

[0032] In this embodiment, the pressing tool 11 - 2 is a sheet-like structure, and is arranged circumferentially around the guide rod 11 - 3 at intervals. Specifically, the pressing tool 11 - 2 is fixed in the fixed head 11 - 1 , and the fixed head 11 - 1 is fixed to the first plate 20 by the locking seat 21 .

[0033] In this embodiment, the guide rod 11-3 is telescopically disposed in the pressure head 11. Figure 4 and Figure 5 The guide rod 11-3 is made of rubber material and is made into a cylindrical rod. An annular rubber member 29 is provided in the first plate 20 and is elastic. One end of the guide rod 11-3 rests on the annular rubber member 29. When the guide rod 11-3 is subjected to a reaction force, the annular rubber member 29 contracts. When the reaction force disappears or the elastic force of the rubber member 29 is greater than the reaction force on the guide rod 11-3, the guide rod 11-3 gradually returns to its initial position.

[0034] In this embodiment, a support column 23 is disposed on the base 17, and the support column is configured to hold the second workpiece above the assembly position of the second workpiece and the first workpiece, wherein the support column 23 is retractably disposed in the base 17. Figure 4One end of the support column 23 is passed through the bearing 25, and the other end is against the spring B28, and the spring B28 provides a telescopic effect for the support column 23. That is, the bearing 25 can be positioned in the correct assembly position to a great extent through the support column 23.

[0035] In this embodiment, the middle seat 16 is fixed to the second plate 15 , and a guide member is provided between the base 17 and the middle seat 16 , which guides the base 17 to move toward the middle seat 16 when pressed by the pressure head 11 and provides a restoring force for the base 17 .

[0036] In this embodiment, the guide rod 11 - 3 is provided with a hole portion 11 - 4 adapted to the outer contour of the support column 23 .

[0037] It should be pointed out that the above preferred embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A pressing device, characterized in that: include: a first plate; A pressing head portion, disposed on the first plate, provided with a pressing tool and a guide rod, wherein the pressing tool is arranged circumferentially around the guide rod; A second plate member is disposed opposite to and below the first plate member; A base, disposed on the second plate toward the pressure head, and having a groove for placing the first workpiece; and a second workpiece; When the first plate is driven toward the second plate, the guide rod contacts the second workpiece in advance to pre-guide the second workpiece portion into the first workpiece; as the first plate is continuously pressed down, the pressing tool contacts the second workpiece and presses the second workpiece completely into the first workpiece, completing the pressing assembly of the first workpiece and the second workpiece.

2. The pressing device according to claim 1, characterized in that: The pressing tool is configured to form radial extrusion on the assembly surfaces of the first workpiece and the second workpiece.

3. The pressing device according to claim 2, characterized in that: The pressing tool is provided with a pre-pressing section, a stamping section and an auxiliary section in sequence in the radial direction relative to the guide rod. The plane formed by the stamping section relative to the axial low point of the guide rod is higher than the planes formed by the pre-pressing section and the auxiliary section relative to the axial low point of the guide rod. The pre-pressing section is used to press the first workpiece into the second workpiece, and the stamping section is used to form radial extrusion on the assembly surfaces of the first workpiece and the second workpiece.

4. The pressing device according to any one of claims 1 to 3, characterized in that: The pressing cutters are sheet-like structures and are arranged circumferentially around the guide rod at intervals.

5. The pressing device according to claim 4, characterized in that: The guide rod is telescopically arranged in the pressure head portion.

6. The pressing device according to claim 1, characterized in that: The base is provided with a support column, and the support column is configured to hold the second workpiece above the assembly position of the second workpiece and the first workpiece, wherein the support column is telescopically arranged in the base.

7. The pressing device according to claim 1, characterized in that: It also includes an intermediate seat, which is fixed to the second plate. A guide member is provided between the base and the intermediate seat, which guides the base to move toward the intermediate seat when the base is pressed by the pressure head and provides a restoring force for the base.

8. The pressing device according to claim 6, characterized in that: The guide rod is provided with a hole portion adapted to the outer contour of the support column.

9. The pressing device according to claim 1, characterized in that: The first plate is guided as it moves toward the second plate.

10. The pressing device according to claim 1, characterized in that: The first workpiece includes a connecting rod; the second workpiece includes a bearing.

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