Copper bush mounting device for shaft parts

Abstract

The utility model discloses a copper bush mounting device for shaft parts, which comprises a base, and a hydraulic oil cylinder, two V-shaped components and a rear center seat are sequentially mounted on the base from the front end to the rear end. A piston rod of the hydraulic oil cylinder is coaxially provided with a press-fit mandrel with the diameter of the front section being large and the diameter of the rear end being small, a to-be-installed copper sleeve can be installed on the small-diameter section of the press-fit mandrel, a shaft part is arranged on a height-adjustable V-shaped assembly, the rear end of the shaft part is limited through a center on a rear center seat, and the piston rod is controlled to stretch out through the hydraulic oil cylinder. The to-be-mounted copper bush can be mounted in an inner hole of a shaft part. The height of the two V-shaped assemblies in the device is adjusted, so that the shaft part is concentric with the hydraulic oil cylinder and the rear center. A piston rod of the hydraulic oil cylinder is connected with a press-fit mandrel used for supporting the copper bush, the piston rod is controlled to stretch out through the hydraulic oil cylinder, and the copper bush to be installed can be installed in an inner hole of a shaft part. The device is compact in design, simple in structure, convenient to operate and high in automation degree.

Description

Technical Field

[0001] The utility model relates to the field of mechanical manufacturing and assembly, in particular to a copper sleeve installation device for shaft parts. Background Art

[0002] In the field of mechanical manufacturing and assembly, hollow transmission shaft parts are widely used, with many types and large quantities. They are widely used in transmission parts of various types of tractors and other agricultural machinery and equipment. Hollow long shaft parts can pass through the transmission noodle shaft in the middle. In order to prevent the noodle shaft from vibrating and bending in the hole, there needs to be a support part between the shaft hole. Generally, a clearance fit is adopted, and the torque is transmitted between the two parts by relative rotation. In order to ensure smooth, reliable transmission and long service life, a copper sleeve needs to be pressed into the contact part between the inner hole of the shaft part and the noodle shaft to improve wear resistance. The copper sleeve and the shaft hole have an interference fit, and a certain amount of pressure is required during assembly. Two methods are used on site:

[0003] Method 1: Design and manufacture a special matching step mandrel, put the copper sleeve on the mandrel, align it with the part hole, hit the step mandrel with a hammer, hammer the mandrel with the copper sleeve, and then remove the mandrel. This method can easily cause the edge of the copper sleeve to be damaged, the part is unqualified, and the labor intensity is high and the efficiency is low;

[0004] Method 2: On a conventional lathe, the chuck fixes one end of the part, the center frame holds the part to press one end of the copper sleeve, the copper sleeve is aligned with the hole of the part, and the tailstock of the hand-cranked lathe presses the copper sleeve in. This method is also labor-intensive, inefficient, and occupies machine equipment and technical operators. Utility Model Content

[0005] In order to solve the deficiencies in the prior art, the utility model provides a copper sleeve installation device for shaft parts. By adjusting the height of the two V-shaped components in the device, the shaft parts are made concentric with the hydraulic cylinder and the rear center. The piston rod of the hydraulic cylinder is connected to a press-fit mandrel for supporting the copper sleeve. By controlling the piston rod to extend through the hydraulic cylinder, the copper sleeve to be installed can be installed in the inner hole of the shaft part. The device has a compact design, a simple structure, is easy to operate, and has a high degree of automation.

[0006] In order to achieve the above purpose, the specific scheme adopted by the utility model is:

[0007] A copper sleeve installation device for shaft parts comprises a base, on which a hydraulic cylinder, two V-shaped assemblies and a rear center seat are installed in sequence from the front end to the rear end; a press-fit mandrel with a large diameter at the front section and a small diameter at the rear end is coaxially provided on the piston rod of the hydraulic cylinder, and the copper sleeve to be installed can be installed on the small diameter section of the press-fit mandrel, the shaft part is placed on the height-adjustable V-shaped assembly and its rear end is limited by the rear center on the rear center seat, and the piston rod is controlled to extend by the hydraulic cylinder, so that the copper sleeve to be installed can be installed in the inner hole of the shaft part.

[0008] Furthermore, the hydraulic cylinder, the V-shaped assembly and the rear center seat are all slidably connected to the base.

[0009] Furthermore, a T-shaped through slot extending along its axial direction is provided in the middle of the base, and a base plate is provided on the hydraulic cylinder, the V-shaped assembly and the rear center seat, and a U-shaped slot is provided at the front and rear ends of the base plate, and the base plates of the hydraulic cylinder, the V-shaped assembly and the rear center seat can be connected to the base by fasteners; the fasteners include T-shaped screws and fastening nuts, and the T-shaped screws are slidably connected to the T-shaped through slots, and extend through the U-shaped slots to the top of the base plate and cooperate with the fastening nuts located above the U-shaped slots.

[0010] Further, the V-shaped assembly includes, in addition to the bottom plate, a support block and a V-shaped block;

[0011] There are two support blocks, both of which are vertically arranged on the bottom plate, the two support blocks are arranged opposite to each other, and the middle parts of the two support blocks are provided with a slide groove;

[0012] A V-shaped groove for placing shaft parts is provided in the middle of the V-block, and sliding columns passing through the sliding groove are provided at both ends of the V-block. One end of the sliding column extending out of the sliding groove is threadedly connected to a limiting nut, and the V-block can be moved to a target height through the cooperation of the limiting nut and the sliding column.

[0013] Furthermore, at least one side of the V-shaped block is provided with an L-shaped plate, the vertical section of the L-shaped plate is connected to the V-shaped block, and a limit rod is threadedly connected to the horizontal section, and the limit rod is vertically fixed to the bottom plate.

[0014] Furthermore, vertically extending grooves are provided on the opposite end surfaces of the two support blocks, bosses matching the V-shaped blocks are provided at both ends, and the sliding column is provided on the bosses.

[0015] Furthermore, the copper sleeve installation device also includes a reversing valve installed on the base, the reversing valve is connected to the hydraulic station and the hydraulic cylinder through a pipeline, and a handle for controlling the tightening or loosening of the hydraulic cylinder is installed on the reversing valve.

[0016] Furthermore, a baffle is installed on the base at the front end of the hydraulic cylinder.

[0017] Furthermore, two pairs of hanging rings are provided on the base.

[0018] Beneficial effects:

[0019] 1) The copper sleeve installation device in the utility model includes a base, a hydraulic cylinder installed on the base, two V-shaped components and a rear center seat. The height of the two V-shaped components can be adjusted according to the structure of the shaft parts, so that the shaft parts are concentric with the hydraulic cylinder and the rear center. The piston rod of the hydraulic cylinder is connected to a press-fit mandrel for supporting the copper sleeve. The piston rod is extended by the hydraulic cylinder to control the copper sleeve to be installed in the inner hole of the shaft part. The device has a compact design, a simple structure, is easy to operate, and has a high degree of automation.

[0020] 2) In the utility model, the hydraulic cylinder, the V-shaped assembly and the rear center seat are all slidably connected to the base, so that the above-mentioned components can be adjusted to a suitable position according to the structure of the shaft parts, and the overall adjustment is convenient.

[0021] 3) The device also includes a reversing valve installed on the base. The device is placed on a workbench and connected to a hydraulic station. After simple positioning adjustments for each different type of shaft parts, the device can be used to press-fit the copper sleeve. The assembly is efficient, the operation is convenient, and the quality is stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is the front view of the copper sleeve installation device in the utility model;

[0023] Figure 2 A top view of the device of the present invention;

[0024] Figure 3 It is a left side view of the device of the present invention.

[0025] Figure 4 It is a schematic diagram of the structure of the V-type component.

[0026] Figure numerals: 1. baffle, 2. pipeline, 3. hydraulic cylinder, 4. reversing valve, 5. press-fit core shaft, 6. copper sleeve, 7. V-shaped assembly, 701. support block, 702. V-shaped block, 703. limit nut, 704. base plate, 7041. U-shaped groove, 705. limit rod, 706. L-shaped plate, 8. shaft parts, 9. rear center, 10. rear center seat, 11. base, 1101. T-slot, 12. handle, 13. lifting ring. DETAILED DESCRIPTION

[0027] The technical solution of the utility model will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of the utility model.

[0028] In the description of the present invention, it is necessary to understand that the terms "upper" and "lower" etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, 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 limiting the scope of protection of this invention.

[0029] The utility model discloses a copper sleeve installation device for shaft parts, please refer to Figures 1 to 3 The copper sleeve installation device includes a base 11, which is fixed to the workbench by bolts. A hydraulic cylinder 3, two V-shaped assemblies 7 and a rear center seat 10 are installed on the base 11 from the front to the back. The height of the V-shaped assembly 7 is adjustable, and the height of the V-shaped assembly 7 can be adjusted according to the structure of the shaft parts, so that the workpiece is concentric with the hydraulic cylinder 3 and the rear center seat 10. A press-fit mandrel 5 with a large front diameter and a small rear diameter is coaxially provided on the piston rod of the hydraulic cylinder 3. The copper sleeve 6 to be installed can be installed on the small diameter section of the press-fit mandrel 5. The shaft parts are placed on the V-shaped assembly 7 and the rear end is limited by the rear center seat 9. A reversing valve 4 is installed on the base 11. The reversing valve 4 is connected to the hydraulic station and the hydraulic cylinder 3 through a pipeline 2. A handle 12 for controlling the tightening or loosening of the hydraulic cylinder 3 is installed on the reversing valve 4. The hydraulic station is connected to the reversing valve 4 through pipelines A1 and A2, and the corresponding pipelines B1 and B2 are connected to the hydraulic cylinder 3. Before operation, the handle 12 is in a state of being away from the workpiece. The two V-shaped components 7 are adjusted into position according to the structure of the workpiece, and the matching press-fit mandrel 5 is replaced. After adjustment into position, the copper sleeve 6 is placed on the press-fit mandrel 5, and the handle 12 is rotated upwards. The piston rod is controlled to extend through the hydraulic cylinder 3 to make the press-fit mandrel 5 close to the workpiece and press it tightly, and the copper sleeve 6 is pressed into the workpiece. Then the handle 12 is rotated downwards to make the press-fit mandrel 5 leave the workpiece, and the workpiece is taken out, and the press-fitting is completed.

[0030] Preferably, the hydraulic cylinder 3, the V-shaped assembly 7 and the rear center seat 10 are all slidably connected to the base 11. The positions of the above components can be reasonably adjusted according to the length of the shaft parts, and the overall adjustment is convenient.

[0031] Specifically, a T-shaped through slot 1101 extending along the axial direction is provided in the middle of the base 11. The hydraulic cylinder 3, the V-shaped assembly 7 and the rear top seat 10 are all provided with a bottom plate. Taking the V-shaped assembly 7 as an example, the V-shaped assembly 7 has a bottom plate 704, and a U-shaped slot 7041 is provided at both the front and rear ends. The bottom plate 704 of the V-shaped assembly 7 can be connected to the base 11 by a fastener (not shown in the figure); the fastener includes a T-shaped screw and a fastening nut. The T-shaped screw is slidably connected with the T-shaped through slot 1101, and extends through the U-shaped slot 7041 to the top of the bottom plate 704 and cooperates with the fastening nut located above the U-shaped slot 7041. The assembly method of the hydraulic cylinder 3 and the rear top seat 10 is consistent with the assembly method of the V-shaped assembly 7. T-shaped screws are used to fix each component firmly and not easily loosened. The installation accuracy of each component is sufficient to ensure that the workpiece can be installed correctly and concentric with the press-fit mandrel.

[0032] The specific structure of the V-type component 7 is described in detail below. Figure 4 The V-shaped assembly 7 includes a bottom plate 704, a support block 701 and a V-shaped block 702; wherein, there are two support blocks 701, both of which are vertically arranged on the bottom plate 704, and the two support blocks 701 are arranged opposite to each other, and the middle of the two support blocks 701 is provided with a slide groove. The middle of the V-shaped block 702 is provided with a V-shaped groove for placing shaft parts, and both ends of the V-shaped block 702 are provided with a slide column penetrating the slide groove, and one end of the slide column extending out of the slide groove is threadedly connected to a limit nut 703, and the V-shaped block 702 can be moved to a target height by the cooperation of the limit nut 703 and the slide column.

[0033] Preferably, at least one side of the V-block 702 is provided with an L-shaped plate 706, the vertical section of the L-shaped plate 706 is connected to the V-block 702, and the horizontal section is threadedly connected with a limit rod 705, and the limit rod 705 is vertically fixed on the bottom plate 704. By providing the L-shaped plate 706 and the limit rod 705, the height of the V-block 702 can be finely adjusted by rotating the limit rod 705 to ensure that it is consistent with the height of the part.

[0034] Specifically, vertically extending grooves are provided on opposite end surfaces of the two support blocks 701, bosses matching with the V-shaped block 702 are provided at both ends, and the sliding column is provided on the bosses.

[0035] Preferably, a baffle 1 is installed on the base 11 at the front end of the hydraulic cylinder 3 to prevent the hydraulic cylinder 3 from shifting during operation. The base 11 is provided with a plurality of threaded holes, and the baffle 1 can be adjusted to a suitable position according to the position of the hydraulic cylinder 3, or baffles 1 of different specifications can be replaced.

[0036] Specifically, the copper sleeve 6 to be installed is clearance-matched with the small diameter section of the press-fit core shaft 5, and the clearance is 0.1-0.15 mm.

[0037] Preferably, the base 11 is further provided with two pairs of lifting rings 13, which are threadedly connected to the base 11 for use in lifting the device.

[0038] The device in the utility model can be installed on a workbench, is easy to disassemble, and is equipped with a lifting ring for easy transportation. Before batch processing, the distance between the V-shaped component 7 and the hydraulic cylinder 3 and the rear center 9 is adjusted, and the press-fit mandrel 6 matching the copper sleeve 5 is replaced. After the first piece is debugged and qualified, it can be batch processed according to repeated actions.

[0039] The device in the utility model is ingenious in conception, compact in design and simple in structure. After using the device, the degree of automation is high, the operation method is simple and convenient, and the operator's skill level is not required to be high. Compared with the previous method of press-fitting copper sleeves on shaft parts, the efficiency is increased by about 3 times, and the product qualification rate is 100%.

[0040] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Any equivalent changes or modifications made according to the essence of the utility model should be included in the protection scope of the utility model.

Claims

1. A copper sleeve installation device for shaft parts, characterized in that: It comprises a base, on which a hydraulic cylinder, two V-shaped assemblies and a rear center seat are installed in sequence from the front end to the rear; a press-fit mandrel with a large diameter at the front section and a small diameter at the rear end is coaxially arranged on the piston rod of the hydraulic cylinder, and the copper sleeve to be installed can be installed on the small diameter section of the press-fit mandrel, and the shaft parts are placed on the height-adjustable V-shaped assembly and the rear end thereof is limited by the rear center on the rear center seat. The piston rod is controlled to extend by the hydraulic cylinder, so that the copper sleeve to be installed can be installed in the inner hole of the shaft parts.

2. A copper sleeve installation device for shaft parts according to claim 1, characterized in that: The hydraulic cylinder, the V-shaped assembly and the rear center seat are all slidably connected to the base.

3. A copper sleeve installation device for shaft parts according to claim 2, characterized in that: A T-shaped through slot extending along its axial direction is provided in the middle of the base. A bottom plate is provided on the hydraulic cylinder, V-shaped assembly and rear center seat. U-shaped slots are provided at both front and rear ends of the bottom plate. The bottom plates of the hydraulic cylinder, V-shaped assembly and rear center seat can be connected to the base by fasteners; the fasteners include T-shaped screws and fastening nuts. The T-shaped screws are slidably connected to the T-shaped through slots, extend through the U-shaped slots to the top of the bottom plate and cooperate with the fastening nuts located above the U-shaped slots.

4. A copper sleeve installation device for shaft parts according to claim 1, characterized in that: The V-shaped assembly includes, in addition to the base plate, a support block and a V-shaped block; There are two support blocks, both of which are vertically arranged on the bottom plate, the two support blocks are arranged opposite to each other, and the middle parts of the two support blocks are provided with a slide groove; A V-shaped groove for placing shaft parts is provided in the middle of the V-block, and sliding columns passing through the sliding groove are provided at both ends of the V-block. One end of the sliding column extending out of the sliding groove is threadedly connected to a limiting nut, and the V-block can be moved to a target height through the cooperation of the limiting nut and the sliding column.

5. A copper sleeve installation device for shaft parts according to claim 4, characterized in that: An L-shaped plate is disposed on at least one side of the V-shaped block, the vertical section of the L-shaped plate is connected to the V-shaped block, and a limit rod is threadedly connected to the horizontal section, and the limit rod is vertically fixed to the bottom plate.

6. A copper sleeve installation device for shaft parts according to claim 4, characterized in that: Vertically extending grooves are arranged on opposite end surfaces of the two support blocks, bosses matching the V-shaped blocks are arranged at both ends, and the slide column is arranged on the bosses.

7. A copper sleeve installation device for shaft parts according to claim 1, characterized in that: The copper sleeve installation device also includes a reversing valve installed on the base, the reversing valve is connected to the hydraulic station and the hydraulic cylinder through a pipeline, and a handle for controlling the tightening or loosening of the hydraulic cylinder is installed on the reversing valve.

8. A copper sleeve installation device for shaft parts according to claim 1, characterized in that: A baffle is installed on the base at the front end of the hydraulic cylinder.

9. A copper sleeve installation device for shaft parts according to claim 1, characterized in that: Two pairs of hanging rings are arranged on the base.

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