Oil pump bushing press-fitting device

Abstract

An oil pump bushing press-fitting device comprises a positioning mechanism used for positioning a bushing and a pump body, a supporting mechanism used for supporting the positioning mechanism, a limiting mechanism used for keeping the positioning mechanism stable and a pressing mechanism detachably connected with the positioning mechanism, and the positioning mechanism is connected with the bushing and the pump body and used for machining a shaft hole of the bushing. The supporting mechanism is connected with the limiting mechanism, the pressing mechanism abuts against the lining and is used for pressing the lining into the pump body, the supporting mechanism comprises a supporting barrel with the bottom end closed, a spring with the bottom end connected to the inner bottom of the supporting barrel and a connecting groove formed in the top end of the supporting barrel, the top end of the spring is connected with the positioning mechanism, and the connecting groove is connected with the limiting mechanism. According to the press-fitting device for the bushing of the oil pump, the bushing can be assembled on the oil pump, and a shaft hole of the bushing can be machined through the press-fitting device, so that the multifunctional effect is achieved, the labor cost and the equipment cost are saved, and the machining efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of oil pumps, and in particular relates to a bushing press-fitting device for an oil pump. Background Art

[0002] The function of the oil pump is to increase the oil pressure and force the oil to the friction surface of the moving parts, so that the oil can circulate in the lubrication system to ensure good lubrication of the engine. During the manufacturing process of the oil pump, the bushing needs to be assembled to the fixed part of the oil pump cylinder. In the existing technology, the bushing is assembled to the oil pump, which usually requires a separate set of tooling to be designed. The hydraulic press is used to press the bushing into the pump body. For the product after the bushing is installed, in order to avoid slight deformation of the bushing's axial hole after installation, and to ensure that the bushing's axial hole size after installation meets the requirements of the product drawing, another process needs to be arranged to roll the inner side of the bushing's axial hole on a vertical drilling machine. Therefore, the above-mentioned existing technology needs to arrange two working procedures, one is press-fitting the bushing, and the other is shaft hole processing. During the two working procedures, not only the workpiece turnover is required, but also two operators and two devices are required to complete the operation. This not only wastes time and reduces processing efficiency, but also increases costs. Therefore, a processing method that can complete the above two working procedures through one device is needed. The present utility model solves this technical problem. Utility Model Content

[0003] The utility model provides an oil pump bushing press-fitting device, which can not only assemble the bushing to the oil pump, but also use the device to process the axial hole of the bushing, thereby achieving a multifunctional effect, saving labor costs and equipment costs, and improving processing efficiency.

[0004] A lubricating oil pump bushing pressing device includes a positioning mechanism for positioning the bushing and the pump body, a supporting mechanism for supporting the positioning mechanism, a limiting mechanism for maintaining the stability of the positioning mechanism, and a pressing mechanism detachably connected to the positioning mechanism. The positioning mechanism is connected to the bushing and the pump body and is used to process the axial hole of the bushing. The supporting mechanism is connected to the limiting mechanism. The pressing mechanism rests on the bushing and is used to press the bushing into the pump body.

[0005] Furthermore, the support mechanism includes a support tube with a closed bottom end, a spring whose bottom end is connected to the bottom of the support tube, and a connecting groove opened at the top end of the support tube. The top end of the spring is connected to the positioning mechanism, and the connecting groove is connected to the limiting mechanism.

[0006] Furthermore, the limiting mechanism includes a limiting block connected to the top of the support tube, a through groove opened on the limiting block, and a threaded groove opened on the limiting block. The two ends of the threaded groove are respectively opened at the two ends of the limiting block. The threaded groove is connected to the screw, and the screw passes through the threaded groove and is connected to the connecting groove. The through groove is connected to the positioning mechanism and is connected to the interior of the support tube.

[0007] Furthermore, the positioning mechanism includes a positioning core shaft, a sleeve sleeved on the middle part of the positioning core shaft, and a connecting plate connected to the bottom end of the sleeve. The sleeve is slidably connected in the through groove and passes through the pump body. The top end of the sleeve is used to support the bushing.

[0008] One end of the positioning core shaft is connected to the spring, and the top end is connected to the pressing mechanism. The top end of the spring is connected to the bottom end of the connecting disk, and the top end of the connecting disk is detachably pressed against the bottom of the limiting block.

[0009] Furthermore, the pressing mechanism includes a connecting tube sleeved on the top of the positioning core shaft and a pressing ring connected to the bottom of the connecting tube, the bottom end of the pressing ring rests on the bushing, and the top end of the connecting tube is used for the hydraulic press to press downward.

[0010] Furthermore, the top end of the positioning mandrel is connected to an extrusion tool.

[0011] The technical effects of the utility model are as follows:

[0012] (1) The device positions the bushing and the pump body of the oil pump through a positioning mechanism, supports them through a supporting mechanism, and then maintains the position of the positioning mechanism through a limiting mechanism to prevent it from shaking. Then, the bushing is pressed by a pressing mechanism to press it into the corresponding position of the pump body, thereby completing the assembly. The bushing shaft hole can also be processed through the positioning mechanism. Therefore, the bushing can be installed and the bushing shaft hole can be processed through this device, saving labor costs and equipment procurement costs, and there is no need to rotate the bushing, thereby improving work efficiency.

[0013] (2) In this device, under the action of the hydraulic press, when the pressing ring in the pressing mechanism presses the bushing into the pump body, the connecting tube and the pressing ring can be removed, and then the hydraulic press directly presses the positioning core shaft downward. The extrusion tool at the top of the positioning core shaft will automatically process the shaft hole of the bushing during the downward movement, thereby making the processing of the shaft hole simpler and completing the processing without complicated operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the utility model connected to the pump body.

[0015] Figure 2 It is a schematic diagram of the overall structure of the utility model.

[0016] Figure 3 It is a cross-sectional view of the present invention.

[0017] Among them, the accompanying drawings are as follows: 1. Connecting cylinder; 2. Pump body; 3. Limit block; 4. Support cylinder; 5. Bushing; 6. Sleeve; 7. Screw; 8. Pressing ring; 9. Spring; 10. Connecting disk; 11. Positioning core shaft. DETAILED DESCRIPTION

[0018] The technical solution of the present invention will be clearly and completely described below in conjunction with specific embodiments and drawings.

[0019] See also Figure 1-Figure 3 , a device for pressing an oil pump bushing, including a positioning mechanism for positioning the bushing 5 and the pump body 2, a supporting mechanism for supporting the positioning mechanism, a limiting mechanism for maintaining the stability of the positioning mechanism, and a pressing mechanism detachably connected to the positioning mechanism. The positioning mechanism is connected to the bushing 5 and the pump body 2 and is used to process the axial hole of the bushing 5. The supporting mechanism is connected to the limiting mechanism. The pressing mechanism rests on the bushing 5 and is used to press the bushing 5 into the pump body 2.

[0020] Furthermore, the support mechanism includes a support tube 4 with a closed bottom, a spring 9 whose bottom end is connected to the bottom of the support tube 4, and a connecting groove opened at the top of the support tube 4. The top of the spring 9 is connected to the positioning mechanism, and the connecting groove is connected to the limiting mechanism.

[0021] Furthermore, the limiting mechanism includes a limiting block 3 connected to the top of the support tube 4, a through groove opened on the limiting block 3, and a threaded groove opened on the limiting block 3. The two ends of the threaded groove are respectively opened at the two ends of the limiting block 3. The threaded groove is connected to the screw 7. The screw 7 passes through the threaded groove and is connected to the connecting groove. The through groove is connected to the positioning mechanism and is connected to the interior of the support tube 4.

[0022] Furthermore, the positioning mechanism includes a positioning core shaft 11, a sleeve 6 sleeved on the middle part of the positioning core shaft 11, and a connecting plate 10 connected to the bottom end of the sleeve 6. The sleeve 6 is slidably connected in the through groove and passes through the pump body 2. The top end of the sleeve 6 is used to support the bushing 5.

[0023] One end of the positioning mandrel 11 is connected to the spring 9, and the top end is connected to the pressing mechanism. The top end of the spring 9 is connected to the bottom end of the connecting disk 10, and the top end of the connecting disk 10 is detachably against the bottom of the limit block 3. Optionally, the sleeve 6 can be fixed to the outside of the positioning mandrel 11.

[0024] Furthermore, the pressing mechanism includes a connecting tube 1 sleeved on the top of the positioning core shaft 11 and a pressing ring 8 connected to the bottom of the connecting tube 1. The bottom end of the pressing ring 8 rests on the bushing 5, and the top end of the connecting tube 1 is used for the hydraulic press to press downward.

[0025] Furthermore, an extrusion tool is connected to the top of the positioning mandrel 11. It is not shown in the drawings, and those skilled in the art can install the extrusion tool at a specific position on the positioning mandrel 11 according to actual needs. This is a prior art known to those skilled in the art and will not be described in detail here.

[0026] The working principle of this utility model is as follows:

[0027] First, pass the pump body 2 through the top of the positioning core shaft 11 through the mounting hole on the pump body 2 and place it on the limit block 3. Then pass the bushing 5 through the top of the positioning core shaft 11 so that it falls above the mounting hole of the pump body 2. Then pass the pressing ring 8 and the connecting tube 1 through the positioning core shaft 11 so that the pressing ring 8 falls on the bushing 5. Then, press the top of the connecting tube 1 downward with a hydraulic press. Under the action of pressure, the bushing 5 will be pressed into the mounting hole below by the pressing ring 8, thereby completing the assembly of the bushing 5 and the pump body 2.

[0028] Then take out the connecting tube 1 and the pressing ring 8 from the positioning core shaft 11, and then press the top end of the positioning core shaft 11 directly through the hydraulic press. At this time, the positioning core shaft 11 moves downward, the spring 9 contracts, and the extrusion tool on the positioning core shaft 11 will process the axial hole of the bushing 5 during the downward movement, thereby realizing the processing of the axial hole. After the processing is completed, the hydraulic press is separated from the top end of the positioning core shaft 11, and the spring 9 pushes the connecting disk 10 to reset the positioning core shaft 11, and then the pump body 2 equipped with the bushing 5 is removed from the positioning core shaft 11, thereby completing the entire processing work.

[0029] The above embodiments are only preferred embodiments of the present invention. Those skilled in the art can derive other embodiments from the above embodiments without creative work. Therefore, this application protects not only the above embodiments, but also the scope consistent with the principles and features of this application.

Claims

1. An oil pump bushing press-fitting device, characterized in that: The invention comprises a positioning mechanism for positioning the bushing (5) and the pump body (2), a supporting mechanism for supporting the positioning mechanism, a limiting mechanism for maintaining the stability of the positioning mechanism, and a pressing mechanism detachably connected to the positioning mechanism. The positioning mechanism is connected to the bushing (5) and the pump body (2) and is used to process the axial hole of the bushing (5). The supporting mechanism is connected to the limiting mechanism. The pressing mechanism abuts against the bushing (5) and is used to cooperate with the hydraulic press to press the bushing (5) into the pump body (2).

2. The oil pump bushing press-fitting device according to claim 1, characterized in that: The support mechanism comprises a support tube (4) with a closed bottom end, a spring (9) whose bottom end is connected to the bottom of the support tube (4), and a connecting groove provided at the top end of the support tube (4); the top end of the spring (9) is connected to the positioning mechanism, and the connecting groove is connected to the limiting mechanism.

3. The oil pump bushing press-fitting device according to claim 2, characterized in that: The limiting mechanism comprises a limiting block (3) connected to the top end of the support tube (4), a through groove provided on the limiting block (3), and a thread groove provided on the limiting block (3), the two ends of the thread groove being provided at the two ends of the limiting block (3), the thread groove being connected to a screw (7), the screw (7) passing through the thread groove and being connected to the connecting groove, the through groove being connected to the positioning mechanism and being communicated with the interior of the support tube (4).

4. The oil pump bushing press-fitting device according to claim 3, characterized in that: The positioning mechanism comprises a positioning core shaft (11), a sleeve (6) sleeved on the middle portion of the positioning core shaft (11), and a connecting plate (10) connected to the bottom end of the sleeve (6); the sleeve (6) is slidably connected in the through groove and passes through the pump body (2); the top end of the sleeve (6) is used to support the bushing (5); One end of the positioning core shaft (11) is connected to the spring (9), and the top end is connected to the pressing mechanism. The top end of the spring (9) is connected to the bottom end of the connecting disk (10), and the top end of the connecting disk (10) is detachably pressed against the bottom of the limit block (3).

5. The oil pump bushing press-fitting device according to claim 4, characterized in that: The pressing mechanism comprises a connecting tube (1) sleeved on the top end of the positioning core shaft (11), and a pressing ring (8) connected to the bottom end of the connecting tube (1), the bottom end of the pressing ring (8) rests on the bushing (5), and the top end of the connecting tube (1) is used for pressing downward by a hydraulic press.

6. The oil pump bushing press-fitting device according to claim 4, characterized in that: The top end of the positioning mandrel (11) is connected to an extrusion tool.

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