Positioning device of rear axle rear cover assembly

Abstract

The utility model belongs to the technical field of rear axle rear cover machining, and particularly relates to a rear axle rear cover assembly positioning device which comprises a positioning assembly base, a positioning seat is fixedly connected to the outer side of the positioning assembly base, a positioning cavity used for positioning a workpiece is formed in the positioning seat, an air channel assembly is arranged on the outer side of the positioning seat, and the air channel assembly is fixedly connected with the positioning assembly base. The air channel assembly comprises an annular air channel pipe, a main circulation pipe and a plurality of flow dividing and area aligning pipes. The positioning base is provided with a plurality of area ventilation pressure cavities corresponding to the flow dividing and area aligning pipes. A rear cover assembly is located at the positioning position in a positioning cavity, the end face of a workpiece is attached to a positioning assembly base under the combined action of a pressing disc, then a plurality of flow dividing and area aligning pipes are started to enable gas to be introduced into an area ventilation pressure cavity, and the area ventilation pressure cavity is aligned to the position, making contact with the positioning assembly base, of the workpiece. Therefore, multiple areas of the side edge position of the rear cover can be detected at the same time, the rear cover with a certain circumferential length can be rapidly detected, and the detection effect is ensured through position positioning.

Description

Technical Field

[0001] The utility model belongs to the technical field of rear axle rear cover processing, and in particular relates to a positioning device for a rear axle rear cover assembly. Background Art

[0002] The rear axle cover assembly usually refers to a part of the rear axle components of a car. The rear axle of a car usually includes components such as differentials, drive shafts, wheels, and brake systems, while the rear axle cover assembly refers to an assembly component including the rear axle housing, rear bearings, seals, etc. The rear axle cover assembly is fastened to the rear axle housing by bolts or other fixing methods to ensure the sealing and protection of the internal components and lubricants of the rear axle. Therefore, the sealing after use is particularly important, so the rear cover assembly product needs to be tested for air tightness.

[0003] When conducting an airtightness test, gas is filled into the interior of the back cover, and then the airtightness of the product is judged based on the air pressure. It is also necessary to judge the sealing effect of the side of the back cover. The end face of the back cover has a certain circumferential length. Not only does it take a certain amount of time to wait for the gas to be filled, but it is also prone to missed detection. Utility Model Content

[0004] The utility model provides a positioning device for a rear axle rear cover assembly, which has the characteristics of detecting multiple areas on the side of the rear cover, facilitating rapid detection of a rear cover with a certain circumferential length, and ensuring the detection effect through positioning.

[0005] The utility model provides the following technical solutions: a positioning device for a rear axle rear cover assembly, comprising a positioning assembly base, a positioning seat fixedly connected to the outer side of the positioning assembly base, a positioning cavity for positioning a workpiece in the positioning seat, an airway component is arranged on the outer side of the positioning seat, the airway component comprises an annular airway tube, a main flow tube and a plurality of branch zone tubes, the positioning seat is provided with a plurality of regional air-permeable pressure chambers corresponding to the branch zone tubes, a positioning and stabilizing component is arranged on the outer side of the positioning assembly base, the positioning and stabilizing component comprises an external push rod and a pressing plate, the pressing plate is opposite to the outer end face of the workpiece, and the external push rod is L-shaped and distributed on the outer side of the positioning assembly base.

[0006] Among them, a plurality of the branch zone tubes are sealed and connected to the annular airway tube, and the outer side of the annular airway tube is sealed and connected to a main flow tube for connecting to an air source.

[0007] Wherein, the positioning seat is provided with a gas permeability detection hole, and the gas permeability detection hole is connected with the regional gas permeability pressure chamber.

[0008] The number of the regional air-permeable pressure chambers is consistent with the number of the branch pair zone tubes, and a sensor for detecting air pressure is provided in the regional air-permeable pressure chamber.

[0009] Wherein, a top screw is rotatably connected to the pressing plate, the top screw is threadedly connected to the external push rod, and a compression pad is fixedly connected to one side of the pressing plate.

[0010] Among them, one end of the external mandrel is fixedly connected with a rotating disk, a fixing seat is provided on the outer side of the external mandrel, the fixing seat is fixedly connected with the positioning assembly base, and the rotating disk is rotatably connected with the fixing seat.

[0011] The beneficial effects of the utility model are:

[0012] The airway components provided include an annular airway tube, a main flow tube and a plurality of branch zone tubes; the positioning seat is provided with a plurality of regional air-permeable pressure chambers corresponding to the branch zone tubes; the rear cover assembly is positioned in the positioning chamber, and the end face of the workpiece is attached to the positioning assembly base under the joint action of the pressing plate; then the plurality of branch zone tubes are started to allow the gas to pass into the regional air-permeable pressure chamber and be discharged from the air-permeable detection holes toward the contact portion between the workpiece and the positioning assembly base, thereby simultaneously detecting multiple areas on the side of the rear cover, which is beneficial to quickly detecting the rear cover with a certain circumferential length; and the detection effect is ensured by positioning the position.

[0013] The parts not involved in the device are the same as those in the prior art or can be implemented by using the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 It is the front view of the utility model;

[0016] Figure 3 It is a cross-sectional view of the utility model;

[0017] Figure 4 It is a structural schematic diagram of the positioning and stabilizing component in the utility model;

[0018] In the figure: 1. Positioning assembly base; 11. Positioning seat; 111. Regional air permeability pressure chamber; 112. Air permeability detection hole; 113. Positioning chamber; 2. Airway component; 21. Annular airway tube; 22. Branch zone tube; 23. Main flow tube; 3. Positioning and stabilizing component; 31. External ejector rod; 32. Fixed seat; 33. Rotating disk; 34. Pressing disk; 341. Extrusion pad; 35. Ejection screw. DETAILED DESCRIPTION

[0019] See also Figure 1-Figure 4 The utility model provides the following technical solutions: including a positioning assembly base 1, a positioning seat 11 is fixedly connected to the outside of the positioning assembly base 1, a positioning cavity 113 for positioning a workpiece is provided in the positioning seat 11, an airway component 2 is provided on the outside of the positioning seat 11, the airway component 2 includes an annular airway tube 21, a main flow tube 23 and a plurality of branch zone tubes 22, the positioning seat 11 is provided with a plurality of regional air-permeable pressure chambers 111 corresponding to the branch zone tubes 22, a positioning and stabilizing component 3 is provided on the outside of the positioning assembly base 1, the positioning and stabilizing component 3 includes an external push rod 31 and a pressing plate 34, the pressing plate 34 is opposite to the outer end surface of the workpiece, and the external push rod 31 is L-shaped and distributed on the outside of the positioning assembly base 1.

[0020] In this embodiment: a positioning seat 11 is fixedly connected to the outer side of the positioning assembly base 1, and a positioning cavity 113 for positioning the workpiece is provided in the positioning seat 11, and the rear cover workpiece can be positioned in the positioning cavity 113 so that the end face of the workpiece can contact the positioning assembly base 1. At this time, the position where the end face of the workpiece is attached to the positioning assembly base 1 is opposite to the positioning seat 11. The airway component 2 includes an annular airway tube 21, a main flow tube 23 and a plurality of branch zone tubes 22. The positioning seat 11 is provided with a plurality of regional air-permeable pressure chambers 111 corresponding to the branch zone tubes 22. The rear cover assembly is positioned in the positioning cavity 113, and the end face of the workpiece is attached to the positioning assembly base 1 under the joint action of the pressing plate 34. The external push rod 31 is distributed in an L shape on the outer side of the positioning assembly base 1. By using the pressing plate 34, the external push rod 31 can be rotated under the action of the rotating plate 33, so that the pressing plate 34 is opposite to the workpiece, and the pressing plate 34 can be operated on the top screw 35 to apply pressure to the workpiece position, thereby stabilizing the position. When the pressing plate 34 is not used, the external push rod 31 can be rotated to the outside of the positioning seat 11, and the main flow pipe 23 is connected to the air source. The air source can be an air pump, which is passed into the annular airway pipe 21, and then multiple branch zone pipes 22 are started to allow the gas to pass into the regional air permeability pressure chamber 111, and discharged from the air permeability detection hole 112, facing the contact part between the workpiece and the positioning assembly base 1, so as to detect multiple areas of the side position of the rear cover at the same time, which is conducive to the rapid detection of the rear cover with a certain circumferential length, and the positioning of the position ensures the detection effect.

[0021] A plurality of branch zone tubes 22 are sealed and connected to the annular airway tube 21, and a main flow tube 23 for connecting to an air source is sealed and connected to the outer side of the annular airway tube 21; the main flow tube 23 is connected to the air source, which may be an air pump, and is passed into the annular airway tube 21, and then a plurality of branch zone tubes 22 are started to allow the gas to pass into the regional breathable pressure chamber 111.

[0022] The positioning seat 11 is provided with a gas permeability detection hole 112, which is connected to the regional gas permeability pressure chamber 111; a plurality of branch zone pipes 22 are started to allow gas to pass into the regional gas permeability pressure chamber 111, and be discharged from the gas permeability detection hole 112, facing the contact part between the workpiece and the positioning assembly base 1, so as to detect multiple areas on the side of the rear cover at the same time.

[0023] The number of regional breathable pressure chambers 111 is consistent with the number of branch zone tubes 22, and the regional breathable pressure chamber 111 is provided with a sensor for detecting air pressure; when the gas is located in the regional breathable pressure chamber 111, if the air pressure is small, it is judged that there may be a problem at the position of the regional workpiece for analysis, and the regional position can be processed.

[0024] A positioning screw 35 is rotatably connected to the pressing plate 34, and the positioning screw 35 is threadedly connected to the external pushing rod 31. A pressing pad 341 is fixedly connected to one side of the pressing plate 34. By operating on the positioning screw 35, the pressing plate 34 can apply pressure to the workpiece position. The pressing pad 341 is made of rubber material, which can protect the outer surface of the workpiece, so that the pressing plate 34 can firmly position the workpiece.

[0025] One end of the external push rod 31 is fixedly connected to a rotating disk 33, and a fixed seat 32 is provided on the outside of the external push rod 31. The fixed seat 32 is fixedly connected to the positioning assembly base 1, and the rotating disk 33 is rotatably connected to the fixed seat 32; when the pressing plate 34 is not in use, the external push rod 31 can be rotated to the outside of the positioning seat 11 without affecting the removal and positioning of the workpiece.

[0026] The working principle and use process of the utility model are as follows: the rear cover workpiece is positioned in the positioning cavity 113 so that the end face of the workpiece can contact the positioning assembly base 1. At this time, the position where the end face of the workpiece is attached to the positioning assembly base 1 is opposite to the positioning seat 11. The airway component 2 includes an annular airway tube 21, a main flow tube 23 and a plurality of branch zone tubes 22. The positioning seat 11 is provided with a plurality of regional air-permeable pressure cavities 111 corresponding to the branch zone tubes 22. The rear cover assembly is positioned in the positioning cavity 113, and the end face of the workpiece is attached to the positioning assembly base 1 under the joint action of the pressing plate 34. The external push rod 31 is distributed in an L shape on the outside of the positioning assembly base 1. The pressing plate 34 is used to rotate the rotating plate 33. By rotating the external push rod 31 downward, the pressing plate 34 is made to face the workpiece, and operating on the push screw 35, the pressing plate 34 can be pressed to locate the workpiece, thereby stabilizing the position. When the pressing plate 34 is not in use, the external push rod 31 can be rotated to the outside of the positioning seat 11, and the main flow pipe 23 is connected to the air source. The air source can be an air pump, which is passed into the annular airway pipe 21, and then multiple branch zone pipes 22 are started to allow the gas to pass into the regional air permeability pressure chamber 111, and discharged from the air permeability detection hole 112, facing the contact part between the workpiece and the positioning assembly base 1, so as to detect multiple areas on the side of the rear cover at the same time, which is conducive to the rapid detection of the rear cover with a certain circumferential length, and the positioning of the position ensures the detection effect.

Claims

1. A positioning device for a rear axle rear cover assembly, comprising a positioning assembly base (1), wherein a positioning seat (11) is fixedly connected to the outer side of the positioning assembly base (1), and characterized in that: The positioning seat (11) has a positioning cavity (113) for positioning the workpiece. An airway component (2) is arranged outside the positioning seat (11). The airway component (2) includes an annular airway tube (21), a main flow tube (23) and a plurality of branch zone tubes (22). The positioning seat (11) is provided with a plurality of regional air-permeable pressure chambers (111) corresponding to the branch zone tubes (22). A positioning and stabilizing component (3) is arranged outside the positioning assembly base (1). The positioning and stabilizing component (3) includes an external push rod (31) and a pressing plate (34). The pressing plate (34) is opposite to the outer end surface of the workpiece. The external push rod (31) is distributed in an L shape outside the positioning assembly base (1).

2. The positioning device for a rear axle rear cover assembly according to claim 1, characterized in that: A plurality of the branching zone tubes (22) are sealedly connected to the annular airway tube (21), and the outer side of the annular airway tube (21) is sealedly connected to a main flow tube (23) for connecting to an air source.

3. The positioning device for a rear axle rear cover assembly according to claim 1, characterized in that: The positioning seat (11) is provided with a gas permeability detection hole (112), and the gas permeability detection hole (112) is connected to the regional gas permeability pressure chamber (111).

4. The positioning device for a rear axle rear cover assembly according to claim 1, characterized in that: The number of the regional air permeable pressure chambers (111) is consistent with the number of the branching zone tubes (22), and a sensor for detecting air pressure is provided in the regional air permeable pressure chamber (111).

5. The positioning device for a rear axle rear cover assembly according to claim 1, characterized in that: A top screw (35) is rotatably connected to the pressing plate (34), and the top screw (35) is threadedly connected to the external top rod (31). A pressing pad (341) is fixedly connected to one side of the pressing plate (34).

6. The positioning device for a rear axle rear cover assembly according to claim 1, characterized in that: One end of the external push rod (31) is fixedly connected to a rotating disk (33), a fixed seat (32) is provided on the outside of the external push rod (31), the fixed seat (32) is fixedly connected to the positioning assembly base (1), and the rotating disk (33) is rotatably connected to the fixed seat (32).

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