Positioning clamp for shaft sleeve machining

Abstract

The utility model relates to the technical field of shaft sleeve machining, and discloses a positioning clamp for shaft sleeve machining, which comprises a fixing frame, a clamping mechanism is arranged on the front side of the fixing frame and is used for fixing shaft sleeves of different specifications, and a cooling mechanism is arranged on the rear side of the fixing frame and is used for cooling the shaft sleeves of different specifications. A stabilizing mechanism is arranged at the bottom of the outer wall of the fixing frame. The clamping mechanism comprises a fixing plate, the rear side of the fixing plate is fixedly connected to the left end of the front side of the fixing frame, electric push rods are fixedly connected to the upper end and the lower end of the right side of the fixing plate, and displacement plates are fixedly connected to the right ends of the electric push rods. According to the device, preliminary positioning and clamping are conducted through the fixing clamp according to the diameter of the shaft sleeve, then the replacement clamping plate can swing correspondingly, and therefore the replacement clamping plate can be matched with the clamp according to the diameters of shaft sleeves of different specifications, the flexibility of the device is improved, and the adaptation range of the device is widened.

Description

Technical Field

[0001] This utility model relates to the field of bushing processing technology, and in particular to a positioning fixture for bushing processing. Background Technology

[0002] Bushings are common components in mechanical engineering. They are fitted onto shafts or installed in holes to provide support, positioning, friction reduction, or isolation. They are cylindrical parts made of metal, non-metal, or composite materials and are installed between shafts and bearings, shafts and frames, or holes to protect the shaft, reduce friction, bear loads, or isolate vibrations. When machining bushings, positioning fixtures are required.

[0003] Existing positioning fixtures suffer from insufficient positioning accuracy, causing axial or radial offset after bushing installation. This results in uneven clearance and affects the bushing's fixing effect. Current solutions include grinding the fixture's reference surface to improve bushing fixing and designing contoured positioning surfaces for irregularly shaped bushings to achieve surface contact positioning. However, these fixtures still only fit bushings of specific shapes, such as cylindrical bushings, and cannot position irregularly shaped or flanged bushings. This necessitates replacing the bushing positioning fixture, leading to incompatibility with bushings of different specifications. This reduces the fixture's adaptability and affects the fixing effect. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a positioning fixture for bushing processing, which aims to improve the situation in the prior art where it is incompatible with bushings of different specifications, thereby reducing the adaptability range of the fixture and affecting the fixing effect.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a positioning fixture for bushing processing, comprising a fixed frame, a clamping mechanism provided on the front side of the fixed frame for adapting to and fixing bushings of different specifications, a cooling mechanism provided on the rear side of the fixed frame, and a stabilizing mechanism provided on the bottom of the outer wall of the fixed frame; the clamping mechanism includes a fixed plate, the rear side of the fixed plate is fixedly connected to the left front end of the fixed frame, an electric push rod is fixedly connected to the upper and lower right sides of the fixed plate, a displacement plate is fixedly connected to the right end of the electric push rod, a fixing fixture is fixedly connected to the front side of the fixed plate and the displacement plate, a swing cylinder is fixedly connected to the front side of the fixing fixture, a swing plate is fixedly connected to the top end of the swing cylinder, a replacement component is provided on the front side of the swing plate, and a limit component is provided on the right side of the displacement plate.

[0006] As a further description of the above technical solution:

[0007] The cooling mechanism includes a variable frequency fan. The front side of the variable frequency fan is fixedly connected to the middle of the rear side of the fixed frame. An extraction pipe is connected to the top right side of the variable frequency fan. A drying shell is connected to the top of the extraction pipe. Two sponge boards are fixedly installed on the inner wall of the drying shell. A conveying pipe is connected to the bottom right side of the variable frequency fan. A multi-hole nozzle is connected to the upper and lower ends of the front side of the conveying pipe. The rear side of the multi-hole nozzle is fixedly connected to the upper and lower sides of the inner wall of the fixed frame.

[0008] As a further description of the above technical solution:

[0009] The replacement assembly includes two connecting plates, the rear sides of which are respectively fixedly connected to the front sides of the corresponding swing plates. A mounting plate is fixedly connected to one side of each connecting plate. Bolts are threaded to both the front and rear sides of one side of the mounting plate. A replacement clamping plate is threaded to the end of each bolt. A mounting groove is provided on one side of the replacement clamping plate, and one side of the mounting plate engages with the mounting groove.

[0010] As a further description of the above technical solution:

[0011] The limiting component includes a limiting plate, the left side of which is fixedly connected to the right side of the displacement plate. A limiting groove is provided at the front right end of the fixing frame, and the rear side of the limiting plate is slidably connected to the limiting groove.

[0012] As a further description of the above technical solution:

[0013] A control switch is fixedly connected to the right side of the fixed frame. The control switch is electrically connected to the electric push rod, the swing cylinder and the variable frequency fan.

[0014] As a further description of the above technical solution:

[0015] The cooling mechanism also includes a rubber ring, the inner wall of which is fixedly connected to the top of the outer wall of the extraction tube, and the outer wall of which is fixedly connected to the left side of the drying shell.

[0016] As a further description of the above technical solution:

[0017] The clamping mechanism also includes multiple rubber pads, with the opposite sides of the multiple rubber pads respectively fixedly connected to one side of the corresponding fixing clamp and the replacement clamp.

[0018] As a further description of the above technical solution:

[0019] The stabilizing mechanism includes multiple stabilizing seats, with adjacent sides of the multiple stabilizing seats respectively fixedly connected to the left and right sides of the fixed frame, and a support column fixedly connected inside the stabilizing seat.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, the sliding of the displacement plate enables the fixing fixture to perform initial positioning and clamping according to the diameter of the bushing. Then, under the swing of the swing plate, the replacement clamp can swing accordingly, so that the replacement clamp and the fixture can be adapted to the diameter of bushings of different specifications. At the same time, with the cooperation of the replacement component, the device can fix the irregular bushing, thereby improving the flexibility and adaptability of the device and avoiding the situation of incompatibility with bushings of different specifications.

[0022] 2. In this utility model, by starting the variable frequency fan, it draws in the air from the outside through the drying shell. After the air enters the drying shell, it is adsorbed by two sponge plates, thereby reducing the moisture content in the airflow. This avoids the situation where the moisture in the cooling airflow affects the high-temperature bushing. Subsequently, under the output of two multi-hole nozzles, the processed bushing can be dried and cooled, thereby improving the processing efficiency of the bushing. Attached Figure Description

[0023] Figure 1 This is a perspective view of a positioning fixture for machining bushings according to the present invention.

[0024] Figure 2 This is a front view of a positioning fixture for machining bushings according to the present invention.

[0025] Figure 3 This is a top view of a positioning fixture for machining bushings according to the present invention.

[0026] Figure 4 This is an exploded view of the replacement clamping plate of a positioning fixture for bushing machining proposed in this utility model;

[0027] Figure 5 This is a schematic diagram of the cooling mechanism of a positioning fixture for bushing machining proposed in this utility model.

[0028] Legend:

[0029] 1. Fixed frame; 2. Clamping mechanism; 201. Fixed plate; 202. Electric push rod; 203. Displacement plate; 204. Fixed clamp; 205. Swing cylinder; 206. Swing plate; 207. Replacement component; 2071. Connecting plate; 2072. Mounting plate; 2073. Bolt; 2074. Replacement clamping plate; 2075. Mounting groove; 208. Limiting component; 2081. Limiting plate; 2082. Limiting groove; 209. Rubber pad; 3. Cooling mechanism; 301. Variable frequency fan; 302. Extraction pipe; 303. Drying shell; 304. Sponge board; 305. Conveying pipe; 306. Multi-hole nozzle; 307. Rubber ring; 4. Control switch; 5. Stabilizing mechanism; 501. Stabilizing seat; 502. Support column. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0031] Reference Figure 1 , Figure 2 and Figure 4This utility model provides an embodiment of a positioning fixture for machining bushings, including a fixed frame 1. A clamping mechanism 2 is provided on the front side of the fixed frame 1, which is used to adapt to and fix bushings of different specifications. A cooling mechanism 3 is provided on the rear side of the fixed frame 1, which is used to cool the machined bushings, thereby improving machining efficiency. A stabilizing mechanism 5 is provided at the bottom of the outer wall of the fixed frame 1. The clamping mechanism 2 includes a fixed plate 201, the rear side of which is fixedly connected to the left front side of the fixed frame 1. Electric push rods 202 are fixedly connected to the upper and lower right sides of the fixed plate 201. A displacement plate 203 is fixedly connected to the right end of the electric push rod 202, so that under the drive of the electric push rod 202, its right end can drive the displacement plate 203 to move, completing horizontal adjustment. This, in conjunction with multiple fixing fixtures 204, enables initial positioning and clamping. Fixing fixtures 204 are fixedly connected to the front sides of the fixed plate 201 and the displacement plate 203. A swing cylinder 20 is fixedly connected to the front side of the fixing fixture 204. 5. A swing plate 206 is fixedly connected to the top of the swing cylinder 205. When the swing cylinder 205 is activated, it drives the swing plate 206 to swing, thereby causing the replacement component 207 to swing synchronously, achieving the purpose of adjusting the clamping accuracy. The replacement component 207 is provided on the front side of the swing plate 206, and a limit component 208 is provided on the right side of the displacement plate 203. The replacement component 207 includes two connecting plates 2071, and the rear sides of the two connecting plates 2071 are respectively fixedly connected to the corresponding swing plates. On the front side of 206, a mounting plate 2072 is fixedly connected to one side of the connecting plate 2071. By rotating the bolt 2073, the replacement clamp 2074 can be replaced to achieve the purpose of fitting and fixing according to the irregular bushing. The mounting plate 2072 is threaded with bolts 2073 on both the front and rear sides. The end of the bolt 2073 is threaded with the replacement clamp 2074. A mounting groove 2075 is opened on one side of the replacement clamp 2074. One side of the mounting plate 2072 engages with the mounting groove 2075.

[0032] Specifically, the clamping mechanism 2 on the front side of the fixed frame 1 achieves the adaptation and fixing of bushings of different specifications through the coordinated operation of multiple components. The rear side of the fixed plate 201 is fixed to the left front side of the fixed frame 1, serving as the basic support component of the clamping mechanism 2. The electric push rod 202 is fixed at the upper and lower ends of the right side of the fixed plate 201, and its right end is connected to the displacement plate 203. When the electric push rod 202 is started, it drives the displacement plate 203 to move horizontally through its telescopic action, changing the distance between the displacement plate 203 and the fixed plate 201. With the help of the fixing clamp 204, which is fixed to the front of both the fixed plate 201 and the displacement plate 203, the initial positioning and clamping of the bushing is completed. The swing cylinder 205 connected to the front side of the fixing clamp 204 has a swing plate 206 fixed at its top. After the swing cylinder 205 is started, it drives the swing plate 206 to swing, thereby driving the replacement component 207 on the front side of the swing plate 206 to swing synchronously, realizing Fine-tuning of the clamping angle and position improves clamping accuracy. The replacement component 207 consists of two connecting plates 2071, a mounting plate 2072, bolts 2073, and a replacement clamping plate 2074. The two connecting plates 2071 are fixed to the front side of the swing plate 206, providing a connection base for the mounting plate 2072. The bolts 2073, which are threaded on the front and rear sides of one side of the mounting plate 2072, are threaded to the end of the replacement clamping plate 2074. The replacement clamping plate 2074 can be disassembled and installed by rotating the bolts 2073. The mounting groove 2075 on one side of the replacement clamping plate 2074 engages and positions with the mounting plate 2072. The appropriate replacement clamping plate 2074 can be replaced according to the shape of different irregular bushings to achieve the adaptation and fixation of irregular bushings. The limiting component 208 set on the right side of the displacement plate 203 limits the movement range of the displacement plate 203 to ensure the stability and safety of the clamping process.

[0033] Reference Figure 1 , Figure 3 and Figure 5 The cooling mechanism 3 includes a variable frequency fan 301. The front side of the variable frequency fan 301 is fixedly connected to the middle of the rear side of the fixed frame 1. The top right side of the variable frequency fan 301 is connected to an extraction pipe 302, so that when the variable frequency fan 301 is started, it draws air through the drying shell 303. The top end of the extraction pipe 302 is connected to the drying shell 303. Two sponge plates 304 are fixedly installed on the inner wall of the drying shell 303. The drawn airflow then dries the water vapor through the sponge plates 304. The bottom right side of the variable frequency fan 301 is connected to a conveying pipe 305. The upper and lower ends of the front side of the conveying pipe 305 are connected to multi-hole nozzles 306. Then, the airflow is output through the conveying pipe 305 and the multi-hole nozzles 306, which can cool the processed bushing and improve the processing efficiency. The rear side of the multi-hole nozzles 306 is fixedly connected to the upper and lower sides of the inner wall of the fixed frame 1.

[0034] Specifically, the variable frequency fan 301 is fixed to the middle of the rear side of the fixed frame 1. After the variable frequency fan 301 is started, air is drawn from the drying shell 303 through the extraction pipe 302 connected to the top right side. Two sponge plates 304 are fixedly installed on the inner wall of the drying shell 303 connected to the top of the extraction pipe 302. When the extracted airflow passes through the sponge plates 304, the sponge plates 304 use their porous structure to absorb water vapor in the airflow and dry the air. The dried airflow is transmitted through the conveying pipe 305 connected to the bottom right side of the variable frequency fan 301. The multi-hole nozzles 306 connected to the upper and lower ends of the front side of the conveying pipe 305 evenly output the dried airflow. The rear side of the multi-hole nozzles 306 is fixed to the upper and lower sides of the inner wall of the fixed frame 1 to ensure that the airflow can be accurately sprayed onto the processed bushing. The dried airflow takes away the heat from the surface of the bushing, cools the bushing, shortens the bushing cooling time, improves the bushing processing efficiency, and ensures the continuity of the processing flow.

[0035] Reference Figure 1 , Figure 4 and Figure 5 The limiting component 208 includes a limiting plate 2081, the left side of which is fixedly connected to the right side of the displacement plate 203. A limiting groove 2082 is provided at the front right end of the fixing frame 1, and the rear side of the limiting plate 2081 is slidably connected to the limiting groove 2082. A control switch 4 is fixedly connected to the right side of the fixing frame 1. The control switch 4 is electrically connected to the electric push rod 202, the swing cylinder 205, and the variable frequency fan 301 respectively. The cooling mechanism 3 also includes a rubber ring 307, the inner wall of which is fixedly connected to the top of the outer wall of the extraction tube 302, and the outer wall of which is fixedly connected to the left side of the drying shell 303.

[0036] Specifically, the slidable connection between the limiting plate 2081 and the limiting groove 2082 enables the displacement of the displacement plate 203 to be stably limited, reducing swaying. The control switch 4, which is electrically connected to the electric push rod 202, the swing cylinder 205 and the variable frequency fan 301 respectively, enables the control switch 4 to open and close the equipment. The rubber ring 307 protects the top connection of the extraction tube 302.

[0037] Reference Figure 1 , Figure 2 and Figure 3 The clamping mechanism 2 also includes multiple rubber pads 209, with the opposite sides of the multiple rubber pads 209 respectively fixedly connected to one side of the corresponding fixing clamp 204 and the replacement clamp 2074; the stabilizing mechanism 5 includes multiple stabilizing seats 501, with the adjacent sides of the multiple stabilizing seats 501 respectively fixedly connected to the left and right sides of the fixing frame 1, and a support column 502 fixedly connected inside the stabilizing seat 501.

[0038] Specifically, the rubber pad 209 can improve the fixing effect of the clamped bushing, and the stabilizer 501 and the support column 502 can improve the stability of the device during processing.

[0039] Working principle: The electric push rod 202 is activated, causing its right end to drive the displacement plate 203 to move horizontally, changing the distance between the fixed plate 201 and the displacement plate 203. This allows the fixing clamp 204 on the front side of the fixed plate 201 and the displacement plate 203 to perform initial positioning and clamping according to the bushing diameter. After the swing cylinder 205 on the front side of the fixing clamp 204 is activated, it drives the swing plate 206 to swing, causing the replacement component 207 on the front side of the swing plate 206 to move synchronously, achieving fine adjustment of the clamping angle and position, improving clamping accuracy. In the replacement component 207, two connecting plates 2071 are fixed to the front side of the swing plate 206, supporting the mounting plate 207. 2. The bolts 2073 on the front and rear sides of the mounting plate 2072 are threadedly connected to the replacement clamping plate 2074. By rotating the bolts 2073, the replacement clamping plate 2074 can be disassembled and installed. The mounting plate 2072 and the replacement clamping plate 2074 are positioned by engaging with the mounting groove 2075 on the mounting plate 2072 and the replacement clamping plate 2074. The appropriate replacement clamping plate 2074 can be replaced according to the shape of the irregular bushing to fix the irregular bushing. The limiting component 208 on the right side of the displacement plate 203 limits its range of movement to ensure clamping stability. The components cooperate with each other to enable the device to adapt to bushings of different diameters and irregular shapes, improve flexibility and adaptability, and avoid the situation where the bushing cannot be fixed due to differences in bushing specifications.

[0040] Furthermore, the variable frequency fan 301 is started, and outside air is drawn from the drying shell 303 through the extraction pipe 302 connected to the top right side. Two sponge plates 304 are fixed to the inner wall of the drying shell 303, which is connected to the top of the extraction pipe 302. When the air enters the drying shell 303, the sponge plates 304 use their porous structure to absorb water vapor in the airflow, reduce the water content of the airflow, and avoid adverse effects caused by water-containing cooling airflow contacting the high-temperature bushing. The dried air is transmitted through the conveying pipe 305 connected to the bottom right side of the variable frequency fan 301. The multi-hole nozzle 306 connected to the upper and lower ends of the front side of the conveying pipe 305 is fixed to the upper and lower sides of the inner wall of the fixed frame 1. The multi-hole nozzle 306 outputs the dried airflow evenly, which directly acts on the processed bushing, removes the heat from the surface of the bushing, realizes the drying and cooling of the bushing, shortens the bushing cooling time, improves the bushing processing efficiency, and ensures the continuity of the processing flow.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A positioning fixture for machining bushings, comprising a fixing frame (1), characterized in that: A clamping mechanism (2) is provided on the front side of the fixed frame (1). The clamping mechanism (2) is used to adapt to the fixing of bushings of different specifications. A cooling mechanism (3) is provided on the rear side of the fixed frame (1). A stabilizing mechanism (5) is provided on the bottom of the outer wall of the fixed frame (1). The clamping mechanism (2) includes a fixed plate (201). The rear side of the fixed plate (201) is fixedly connected to the front left end of the fixed frame (1). Electric push rods (202) are fixedly connected to the upper and lower ends of the right side of the fixed plate (201). A displacement plate (203) is fixedly connected to the right end of the electric push rod (202). A fixing clamp (204) is fixedly connected to the front side of both the fixed plate (201) and the displacement plate (203). A swing cylinder (205) is fixedly connected to the front side of the fixing clamp (204). A swing plate (206) is fixedly connected to the top end of the swing cylinder (205). A replacement component (207) is provided on the front side of the swing plate (206). A limit component (208) is provided on the right side of the displacement plate (203).

2. The positioning fixture for bushing machining according to claim 1, characterized in that: The cooling mechanism (3) includes a variable frequency fan (301). The front side of the variable frequency fan (301) is fixedly connected to the middle of the rear side of the fixed frame (1). The top right side of the variable frequency fan (301) is connected to an extraction pipe (302). The top end of the extraction pipe (302) is connected to a drying shell (303). Two sponge boards (304) are fixedly installed on the inner wall of the drying shell (303). The bottom right side of the variable frequency fan (301) is connected to a conveying pipe (305). The upper and lower ends of the front side of the conveying pipe (305) are connected to multi-hole nozzles (306). The rear side of the multi-hole nozzles (306) is fixedly connected to the upper and lower sides of the inner wall of the fixed frame (1).

3. A positioning fixture for machining bushings according to claim 1, characterized in that: The replacement assembly (207) includes two connecting plates (2071). The rear sides of the two connecting plates (2071) are respectively fixedly connected to the front side of the corresponding swing plate (206). A mounting plate (2072) is fixedly connected to one side of the connecting plate (2071). Bolts (2073) are threadedly connected to both the front and rear sides of one side of the mounting plate (2072). A replacement clamping plate (2074) is threadedly connected to the end of the bolt (2073). A mounting groove (2075) is provided on one side of the replacement clamping plate (2074). One side of the mounting plate (2072) engages with the mounting groove (2075).

4. A positioning fixture for machining bushings according to claim 1, characterized in that: The limiting component (208) includes a limiting plate (2081), the left side of which is fixedly connected to the right side of the displacement plate (203), and a limiting groove (2082) is provided at the front right end of the fixing frame (1), and the rear side of the limiting plate (2081) is slidably connected to the limiting groove (2082).

5. A positioning fixture for machining bushings according to claim 2, characterized in that: A control switch (4) is fixedly connected to the right side of the fixed frame (1). The control switch (4) is electrically connected to the electric push rod (202), the swing cylinder (205) and the variable frequency fan (301).

6. A positioning fixture for machining bushings according to claim 2, characterized in that: The cooling mechanism (3) also includes a rubber ring (307), the inner wall of which is fixedly connected to the top of the outer wall of the extraction tube (302), and the outer wall of which is fixedly connected to the left side of the drying shell (303).

7. A positioning fixture for machining bushings according to claim 3, characterized in that: The clamping mechanism (2) also includes a plurality of rubber pads (209), with the opposite sides of the plurality of rubber pads (209) respectively fixedly connected to one side of the corresponding fixing clamp (204) and the replacement clamp (2074).

8. A positioning fixture for machining bushings according to claim 1, characterized in that: The stabilizing mechanism (5) includes multiple stabilizing seats (501), with each of the multiple stabilizing seats (501) having an adjacent side fixedly connected to the left and right sides of the fixed frame (1), and a support column (502) fixedly connected inside the stabilizing seat (501).

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