Gear copper bush press fitting tool

Abstract

The utility model belongs to the technical field of gear machining, and particularly relates to a gear copper bush press fitting tool which comprises a supporting component and a pressing component matched with the supporting component. The supporting component comprises a press-fitting base, a positioning mandrel used for clamping the copper bush is arranged in the press-fitting base in a sliding mode, a gear clamping groove matched with a gear is formed in the outer side wall of the top end of the press-fitting base, a flange is arranged at the bottom end of the press-fitting base, a first compression spring is arranged between the positioning mandrel and the flange, and an installation clamping table used for supporting the copper bush is arranged on the side wall of the top of the positioning mandrel. The downward pressing component comprises an upper connector, a connecting groove is formed in the top end of the upper connector, and an upper pressing head is arranged at the bottom end. The press-fitting base is installed on a working table top of the press-fitting machine, the upper connector is installed on a downward pressing power mechanism of the press-fitting machine, the copper sleeve is clamped on the positioning mandrel, a gear to be machined is clamped on the press-fitting machine, the positioning mandrel is pressed into the press-fitting base through the upper pressing head, meanwhile, the copper sleeve is pressed into an inner hole of the gear, and the copper sleeve is prevented from being extruded and deformed through the positioning mandrel. The integrity of the copper sleeve is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gear processing, in particular to a gear copper sleeve press-fitting tool. Background Art

[0002] Copper sleeves installed inside gears can reduce friction, absorb shock, and protect shafts from corrosion and wear.

[0003] A lubricating film is formed between the copper sleeve and the shaft, which reduces the direct contact between the shaft and the hole, thereby reducing friction loss. This lubricating film can effectively reduce the friction resistance during gear operation and improve mechanical efficiency.

[0004] Copper sleeves can absorb the impact of the shaft, reduce vibration and noise, and improve the stability and smooth operation of mechanical equipment. This is very effective in reducing noise and vibration during mechanical operation and helps to increase the service life of the machinery.

[0005] The copper sleeve can protect the shaft from corrosion and wear and extend the service life of the shaft. The copper sleeve has good corrosion resistance and can maintain good corrosion resistance in some chemical elements to protect the shaft from damage.

[0006] Installing copper sleeves inside gears can not only improve the operating efficiency and stability of the machinery, but also extend the service life of the machinery, while simplifying the maintenance process and reducing maintenance costs.

[0007] At present, the copper sleeve is basically installed inside the gear by press fitting, and is positioned through the outer ring of the gear. After carburizing, the deformation tolerance of the outer ring of the gear is 0.15~0.25mm. During press fitting, the copper sleeve and the inner hole of the gear are not coaxial. When subjected to force, the position between the gear and the copper sleeve is offset. During the press fitting process, the copper sleeve often bulges inward or outward, cracks appear at the entry end of the copper sleeve, and the copper sleeve end that contacts the press head cannot be pressed down and is uneven.

[0008] In response to the above problems, this utility model document proposes a gear copper sleeve press-fitting tool. Utility Model Content

[0009] The utility model provides a gear copper sleeve press-fitting tool, which enables the copper sleeve to smoothly enter the inner hole of the gear, thereby improving the stability of the copper sleeve press-fitting and the integrity of the copper sleeve.

[0010] The utility model provides the following technical solutions:

[0011] A gear copper sleeve press-fitting tool comprises a supporting component and a pressing component matched therewith;

[0012] The support member includes a press-fit base, a positioning core shaft for clamping the copper sleeve is slidably arranged in the press-fit base, and a gear groove matching the gear is provided on the outer wall of the top end of the press-fit base, and a flange is provided at the bottom end. A first compression spring is provided between the positioning core shaft and the flange, and a mounting clamping platform for supporting the copper sleeve is provided on the top side wall of the positioning core shaft;

[0013] The pressing member comprises an upper joint, a top end of the upper joint is provided with a connecting groove, and a bottom end of the upper joint is provided with an upper pressing head.

[0014] Furthermore, the positioning core shaft includes a coaxially arranged guide shaft, a support shaft and an installation shaft, one end of the guide shaft is connected to the first compression spring, and the other end is connected to one end of the support shaft, and the other end of the support shaft is connected to one end of the installation shaft. The diameter of the support shaft is 5 to 5.5 mm larger than the diameter of the installation shaft, the top edge of the support shaft is guided at a right angle, and the diameter of the guide shaft is the same as the diameter of the inner hole of the gear to be processed.

[0015] Furthermore, a positioning mechanism is provided in the lower pressure member, a first sliding groove is provided at the bottom end of the upper joint, a top is slidably provided in the first sliding groove, a second compression spring is provided between the top and the bottom surface of the first sliding groove, and the top end face of the positioning core shaft is provided with a positioning groove matching the top.

[0016] Furthermore, a first slot is provided on the bottom surface of the first sliding slot, a second slot is provided on the adjacent surface of the top end and the first slot, one end of the second compression spring is clamped in the first slot, and the other end is clamped in the second slot.

[0017] Furthermore, the bottom end surface of the upper joint is also connected to a connecting plate, and a through hole is opened on the connecting plate at the position corresponding to the first sliding groove. The inner side wall of the through hole is provided with a limiting ridge, and the top passes through the through hole, and the side wall of the end of the top adjacent to the bottom surface of the first sliding groove is provided with a limiting plate that cooperates with the limiting ridge.

[0018] Furthermore, a second sliding groove is formed on the bottom end surface of the press-fit base, a guide hole is formed on the bottom surface of the second sliding groove, the top end of the positioning core shaft passes through the guide hole, and a limit block is formed on the side wall of the bottom end.

[0019] Furthermore, the bottom surface of the press-fit base is connected to a mounting flange, the bottom end surface of the positioning core shaft is provided with a third slot, and a positioning boss is provided at the corresponding position of the mounting flange, one end of the second compression spring is clamped in the third slot, and the other end is sleeved on the positioning boss.

[0020] Furthermore, a downward pressing boss having the same diameter as the inner diameter of the gear is provided on the lower surface of the upper pressing head, and the height of the downward pressing boss is 0.46 to 0.48 mm.

[0021] Furthermore, the connecting plate is connected to the upper joint through a countersunk bolt, the upper pressure head is connected to the connecting plate through a countersunk bolt, a connecting plate is fixedly provided on the bottom outer wall of the press-fit base, and the press-fit base is connected to the mounting flange through the connecting plate and matching bolts.

[0022] In the utility model, the press-fitting base is installed on the working table of the press-fitting machine, the upper joint is installed on the downward pressing power mechanism of the press-fitting machine, the copper sleeve is clamped on the positioning core shaft, the gear to be processed is clamped on the press-fitting production, the positioning core shaft is pressed into the press-fitting base by the upper pressure head, and the copper sleeve is pressed into the inner hole of the gear at the same time. The positioning core shaft prevents the copper sleeve from being squeezed and deformed, thereby improving the integrity of the copper sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic cross-sectional view of a gear copper sleeve press-fitting tool in a working state provided by an embodiment of the present utility model;

[0024] Figure 2 A schematic cross-sectional view of another working state of a gear copper sleeve press-fitting tool provided by an embodiment of the present utility model;

[0025] Figure 3 A schematic cross-sectional view of a press-fitting base in a gear copper sleeve press-fitting tool provided by an embodiment of the present invention;

[0026] Figure 4 A schematic cross-sectional view of a positioning mandrel in a gear copper sleeve press-fitting tool provided by an embodiment of the present invention;

[0027] Figure 5 A schematic cross-sectional view of an upper joint in a gear copper sleeve press-fitting tool provided by an embodiment of the present invention;

[0028] Figure 6 A schematic top view of the structure of a connecting plate in a gear copper sleeve press-fitting tool provided by an embodiment of the present utility model;

[0029] Figure 7 A schematic cross-sectional view of a mounting flange in a gear copper sleeve press-fitting tool provided by an embodiment of the present invention;

[0030] Figure 8 A schematic cross-sectional view of the top of a gear copper sleeve press-fitting tool provided by an embodiment of the present invention;

[0031] Figure 9 The present invention is a schematic cross-sectional structural diagram of an upper pressing head in a gear copper sleeve press-fitting tool provided by an embodiment of the present invention.

[0032] Reference numerals:

[0033] 1. Press-fit base; 101. Second sliding groove; 102. Gear slot; 103. Guide hole; 2. Positioning core shaft; 201. Guide shaft; 202. Support shaft; 203. Mounting shaft; 204. Limit block; 205. Third slot; 3. Upper joint; 301. Connecting groove; 302. First sliding groove; 303. First slot; 4. Upper pressure head; 401. Lower pressure boss; 5. Connecting disk; 501. Through hole; 502. Limiting ridge; 6. Mounting flange; 601. Positioning boss; 7. Top; 701. Limiting plate; 702. Second slot; 8. Second compression spring; 9. First compression spring. DETAILED DESCRIPTION

[0034] The embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0035] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms, "connection", and "installation" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. In addition, "communication" can be a direct connection or an indirect connection through an intermediate medium. Here, "fixed" means that the two are connected to each other and the relative position relationship after connection remains unchanged. The directional terms mentioned in the embodiments of the present invention, such as "inside", "outside", "top", "bottom", etc., are only reference to the directions of the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0036] In the embodiments of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include one or more of the features.

[0037] In the embodiments of the present invention, "and / or" is simply a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0038] References to "one embodiment" or "some embodiments" in this specification mean that a particular feature, structure, or characteristic described in conjunction with that embodiment is included in one or more embodiments of the present invention. Thus, phrases such as "in one embodiment," "in some embodiments," "in other embodiments," and "in yet other embodiments" appearing in various places in this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "including," "comprising," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0039] Example:

[0040] Reference Figures 1-9 As shown, a gear copper sleeve press-fitting tool comprises a supporting member and a pressing member matched therewith;

[0041] The supporting member includes a press-fitting base 1, in which a positioning core shaft 2 for clamping a copper sleeve is slidably provided. A gear clamping groove 102 matching the gear is provided on the outer wall of the top of the press-fitting base 1, and a flange is provided at the bottom end. A first compression spring 9 is provided between the positioning core shaft 2 and the flange. The top side wall of the positioning core shaft 2 is provided with a mounting clamp for supporting the copper sleeve.

[0042] The pressing member includes an upper joint 3 , a connection groove 301 is formed at the top end of the upper joint 3 , and an upper pressing head 4 is provided at the bottom end.

[0043] The press-fitting base 1 is installed on the working table of the press-fitting machine, and the upper joint 3 is installed on the downward pressing power mechanism of the press-fitting machine through the connecting groove 301. The copper sleeve is clamped on the positioning core shaft 2, and the gear to be processed is clamped through the gear clamping groove 102 to locate the top of the press-fitting base 1. The upper pressure head 4 is driven downward by the downward pressing power mechanism of the press-fitting machine, and then the positioning core shaft 2 is pressed into the press-fitting base 1, and the copper sleeve mounted on the positioning core shaft 2 enters the inner hole of the gear. The positioning core shaft 2 is used to ensure that the copper sleeve and the gear will not be deflected during the press-fitting process, thereby ensuring the coaxiality of the copper sleeve and the gear; the positioning core shaft 2 is pressed into the press-fitting base 1. After the press-fitting is completed, the first compression spring 9 is used to facilitate the resetting of the positioning core shaft 2, so as to facilitate continuous press-fitting operations.

[0044] The positioning core shaft 2 includes a coaxially arranged guide shaft 201, a support shaft 202 and an installation shaft 203. One end of the guide shaft 201 is connected to the first compression spring 9, and the other end is connected to one end of the support shaft 202. The other end of the support shaft 202 is connected to one end of the installation shaft 203. The diameter of the support shaft 202 is 5 to 5.5 mm larger than the diameter of the installation shaft 203. The top edge of the support shaft 202 is at a right angle. The diameter of the guide shaft 201 is the same as the diameter of the inner hole of the gear to be processed.

[0045] The guide shaft 201 slides on the press-fitting base 1, while ensuring the stability of the moving direction of the positioning core shaft 2, and the copper sleeve is arranged on the installation shaft 203, and the copper sleeve rests on the top of the support shaft 202. Since the edge of the top of the support shaft 202 is guided at a right angle, and the inner and outer edges of the end of the copper sleeve are guided at a right angle during processing, the copper sleeve rests on the edge of the support shaft 202, and the diameter of the support shaft 202 is 5 to 5.5 mm larger than the diameter of the installation shaft 203, so that when the copper sleeve is sleeved on the installation shaft 203, there is a gap between the inner side wall of the copper sleeve and the installation shaft 203, so that the copper sleeve will shrink inward during the pressing process, while ensuring that the copper sleeve will not bend inward, thereby ensuring the integrity of the copper sleeve.

[0046] A positioning mechanism is also provided in the lower pressing component. A first sliding groove 302 is provided at the bottom end of the upper joint 3. A top 7 is slidably provided in the first sliding groove 302. A second compression spring 8 is provided between the top 7 and the bottom surface of the first sliding groove 302. The top end face of the positioning core shaft 2 is provided with a positioning groove that matches the top 7.

[0047] The top 7 cooperates with the positioning groove to ensure that the position of the positioning core shaft 2 will not change during the pressing process, thereby ensuring that the position of the copper sleeve will not change and ensuring that the copper sleeve can smoothly enter the inner hole of the gear.

[0048] A first card slot 303 is provided on the bottom surface of the first sliding slot 302 , and a second card slot 702 is provided on the adjacent surface of the top 7 and the first card slot 303 . One end of the second compression spring 8 is clamped in the first card slot 303 , and the other end is clamped in the second card slot 702 .

[0049] This allows the top tip 7 to shrink into the first sliding groove 302 during the pressing process, thereby ensuring that the top tip 7 will not squeeze the positioning core shaft 2 during the pressing process, affecting the stability of the position of the positioning core shaft 2, and then affecting the position of the copper sleeve. At the same time, by setting the second compression spring 8, the top tip 7 can be restored to its initial position under the action of the elastic force of the second compression spring 8 after the pressing is completed, which is convenient for continuous pressing operations.

[0050] The bottom end surface of the upper joint 3 is also connected to a connecting plate 5, and a through hole 501 is opened on the connecting plate 5 at the position corresponding to the first sliding groove 302. The inner wall of the through hole 501 is provided with a limiting ridge 502, and the top 7 passes through the through hole 501, and the side wall of the end of the top 7 adjacent to the bottom surface of the first sliding groove 302 is provided with a limiting plate 701 that cooperates with the limiting ridge 502.

[0051] The connecting plate 5 facilitates the assembly of the pressing component. The limiting ridge 502 on the inner wall of the through hole 501 on the connecting plate 5 cooperates with the limiting plate 701 on the top of the top 7 to prevent the top 7 from falling off from the first sliding groove. At the same time, the stability of the moving direction of the top 7 in the first sliding groove 302 is ensured, thereby ensuring the tightness of the top 7 and the positioning groove at the top of the positioning core shaft 2.

[0052] The bottom end surface of the press-fit base 1 is provided with a second sliding groove 101 , the bottom surface of the second sliding groove 101 is provided with a guide hole 103 , the top end of the positioning core shaft 2 passes through the guide hole 103 , and a limit block 204 is provided on the bottom side wall.

[0053] The positioning core shaft 2 passes through the guide hole 103 and slides in the guide hole 103 to ensure the stability of the movement of the positioning core shaft 2. At the same time, the positioning core shaft 2 is prevented from falling off from the guide hole 103 by the limit block 204.

[0054] The bottom surface of the press-fit base 1 is connected to a mounting flange 6, and a third slot 205 is opened on the bottom end surface of the positioning core shaft 2. A positioning boss 601 is provided at the corresponding position of the mounting flange 6. One end of the second compression spring 8 is clamped in the third slot 205, and the other end is sleeved on the positioning boss 601.

[0055] On the one hand, the installation flange 6 makes it convenient to install the press base 1 on the work surface of the press machine, and on the other hand, it is also convenient to position the second compression spring 8. The positioning boss 601 prevents the third compression spring from being squeezed and changing its position, thereby affecting the support effect on the positioning core shaft 2, causing the positioning core shaft 2 to fall, and thus affecting the positioning effect of the copper sleeve.

[0056] The lower surface of the upper pressing head 4 is provided with a pressing boss 401 having the same inner diameter as the gear, and the height of the pressing boss 401 is 0.46-0.48 mm.

[0057] By pressing down the boss 401, the depth of the copper sleeve entering the inner hole of the gear is controlled to be 0.46-0.48 mm.

[0058] The connecting plate 5 is connected to the upper joint 3 through countersunk bolts, the upper pressure head is connected to the connecting plate 5 through countersunk bolts, a connecting plate is fixedly provided on the bottom outer wall of the press-fit base 1, and the press-fit base 1 is connected to the mounting flange 6 through the connecting plate with matching bolts.

[0059] Connect with countersunk bolts to avoid interference with press fitting.

[0060] When in use, the processed gear is clamped on the bottom of the press-fit base 1 through the gear clamping groove 102, and the copper sleeve is clamped on the installation shaft 203. The inner edge of the bottom of the copper sleeve cooperates with the outer edge of the top of the support shaft 202 to position the copper sleeve, and a gap is left between the inner wall of the copper sleeve and the installation shaft 203. By pressing the upper pressing head 4, the top 7 cooperates with the positioning groove on the top of the positioning core shaft 2, and the upper pressing head 4 is continued to be pressed downward so that the lower pressing boss 401 of the upper pressing head 4 contacts with the copper sleeve and the positioning core shaft 2, and the copper sleeve and the positioning core shaft 2 are pressed downward. During the pressing process, the top 7 shrinks into the first sliding groove 302, and the positioning core shaft 2 shrinks into the second sliding groove 101, and at the same time, the copper sleeve enters the inner hole of the gear. When the copper sleeve is under pressure and enters the inner hole of the gear, it will shrink inward. The gap reserved between the inner wall of the copper sleeve and the installation shaft 203 facilitates the contraction of the copper sleeve, and the installation shaft 203 prevents the copper sleeve from shrinking excessively and deforming, thereby ensuring the integrity of the copper sleeve entering the inner hole of the gear. When the upper pressure head 4 contacts the gear through the pressing boss 401, the copper sleeve can penetrate into the inner hole of the gear.

[0061] In actual use, the guide shaft 201 , the support shaft 202 and the installation shaft 203 are integrally formed to ensure the overall strength of the positioning core shaft 2 .

[0062] The above are only specific embodiments of the present invention, but the scope of protection of the present invention is not limited to them. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this utility model should be included in the scope of protection of the present utility model. The embodiments of the present utility model and the features of the embodiments can be combined with each other unless there is a conflict. Therefore, the scope of protection of the present utility model shall be based on the scope of protection of the claims.

Claims

1. A gear copper sleeve press fitting, characterized in that: It includes a supporting member and a pressing member matched therewith; The support member includes a press-fit base, a positioning core shaft for clamping the copper sleeve is slidably arranged in the press-fit base, and a gear groove matching the gear is provided on the outer wall of the top end of the press-fit base, and a flange is provided at the bottom end. A first compression spring is provided between the positioning core shaft and the flange, and a mounting clamping platform for supporting the copper sleeve is provided on the top side wall of the positioning core shaft; The pressing member comprises an upper joint, a top end of the upper joint is provided with a connecting groove, and a bottom end of the upper joint is provided with an upper pressing head.

2. A gear copper sleeve press-fitting tool according to claim 1, characterized in that: The positioning core shaft includes a coaxially arranged guide shaft, a support shaft and an installation shaft, one end of the guide shaft is connected to the first compression spring, and the other end is connected to one end of the support shaft, and the other end of the support shaft is connected to one end of the installation shaft. The diameter of the support shaft is 5 to 5.5 mm larger than the diameter of the installation shaft, and the top edge of the support shaft is guided at a right angle. The diameter of the guide shaft is the same as the diameter of the inner hole of the gear to be processed.

3. The gear copper sleeve press-fitting tool according to claim 1, characterized in that: A positioning mechanism is also provided in the pressing member, and a first sliding groove is provided at the bottom end of the upper joint. A top is slidably provided in the first sliding groove, and a second compression spring is provided between the top and the bottom surface of the first sliding groove. The top end face of the positioning core shaft is provided with a positioning groove that matches the top.

4. A gear copper sleeve press-fitting tool according to claim 3, characterized in that: A first slot is provided on the bottom surface of the first sliding slot, a second slot is provided on the adjacent surface of the top and the first slot, one end of the second compression spring is clamped in the first slot, and the other end is clamped in the second slot.

5. A gear copper sleeve press-fitting tool according to claim 4, characterized in that: The bottom end surface of the upper joint is also connected to a connecting plate, and a through hole is opened on the connecting plate at the position corresponding to the first sliding groove. The inner side wall of the through hole is provided with a limiting ridge, and the top passes through the through hole, and the side wall of the end of the top adjacent to the bottom surface of the first sliding groove is provided with a limiting plate that cooperates with the limiting ridge.

6. The gear copper sleeve press-fitting tool according to claim 1, characterized in that: A second sliding groove is formed on the bottom end surface of the press-fit base, a guide hole is formed on the bottom surface of the second sliding groove, the top end of the positioning core shaft passes through the guide hole, and a limit block is formed on the side wall of the bottom end.

7. The gear copper sleeve press-fitting tool according to claim 5, characterized in that: The bottom surface of the press-fit base is connected to a mounting flange, the bottom end surface of the positioning core shaft is provided with a third slot, and a positioning boss is provided at the corresponding position of the mounting flange, one end of the second compression spring is clamped in the third slot, and the other end is sleeved on the positioning boss.

8. The gear copper sleeve press-fitting tool according to claim 1, characterized in that: The lower surface of the upper pressing head is provided with a pressing boss having the same diameter as the inner diameter of the gear, and the height of the pressing boss is 0.46-0.48 mm.

9. The gear copper sleeve press-fitting tool according to claim 7, characterized in that: The connecting plate is connected to the upper joint by countersunk bolts, the upper pressure head is connected to the connecting plate by countersunk bolts, a connecting plate is fixedly provided on the outer side wall of the bottom of the press-fit base, and the press-fit base is connected to the mounting flange with matching bolts through the connecting plate.

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