Flexible positioning clamp for automobile steering column

Abstract

The utility model discloses a flexible positioning clamp for an automobile steering column, and relates to the technical field of steering column machining clamps. The clamp comprises a supporting seat, and a left check block and a right check block are arranged on the left side and the right side of the supporting seat respectively and used for pre-positioning the automobile steering column. A front end clamping jaw and a rear end clamping jaw are arranged at the front end and the rear end of the supporting seat correspondingly and used for pressing a tubular column on the supporting seat. A plurality of positioning pins are arranged on the supporting seat and arranged in the positioning pin holes, limiting columns are arranged at the tail ends of the positioning pins, spring stop blocks are arranged on the limiting columns, and the springs are supported on the spring stop blocks. The positioning pin can descend along the hole to deform the spring, flexible clamping is achieved, meanwhile, the limiting column can prevent the positioning pin from completely descending into the hole, and it is guaranteed that the head end of the positioning pin protrudes out of the surface of the supporting base all the time. By means of the structure, whether the tubular column is installed in an offset mode or not and whether the positioning pin is accurately positioned or not can be effectively recognized, clamping deviation caused by positioning failure is avoided, and machining precision is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to steering column processing fixture technical field, concretely relates to a flexible positioning fixture of automobile steering column. BACKGROUND

[0002] The automobile steering column is a steering mechanism for connecting the steering wheel and the steering gear, and is an important component on the automobile. After the automobile steering column is cast into shape, the end faces are relatively rough, and the end faces of the automobile steering column need to be finished. Therefore, a positioning fixture is needed to position and clamp the automobile steering column.

[0003] The existing positioning fixture usually sets a positioning pin on the product support surface, and a spring is arranged at the bottom of the positioning pin. The positioning pin descends together with the automobile steering column to achieve flexible positioning of the automobile steering column. Then, air detection is used to identify whether the automobile steering column accurately contacts the support surface. Although this method can identify whether the automobile steering column contacts the support surface, it cannot identify whether the automobile steering column is misassembled, and it also cannot identify whether the positioning pin is effectively positioned in the positioning hole of the automobile steering column. When the positioning pin completely descends into the positioning hole, the automobile steering column can contact the support surface, but the positioning pin cannot achieve the purpose of positioning the automobile steering column. Therefore, the automobile steering column may be misassembled. SUMMARY

[0004] The utility model aims at a flexible positioning fixture of automobile steering column. The fixture can not only achieve flexible clamping of the automobile steering column, but also ensure effective positioning of the automobile steering column to avoid misassembly of the automobile steering column.

[0005] To achieve the above technical purposes, the technical scheme of the utility model is as follows:

[0006] The flexible positioning fixture of the automobile steering column comprises a support seat, a left side stopper is arranged on the left side of the support seat, a right side stopper is arranged on the right side of the support seat, the automobile steering column is located on the support seat between the left side stopper and the right side stopper, the left side stopper prepositions the left side of the automobile steering column, and the right side stopper prepositions the right side of the automobile steering column. A front end clamp jaw is arranged at the front end of the support seat, and the front end clamp jaw is used to press the front end of the automobile steering column on the support seat. A rear end clamp jaw is arranged at the rear end of the support seat, and the rear end clamp jaw is used to press the rear end of the automobile steering column on the support seat. A plurality of positioning pins are arranged on the support seat, the positioning pins are arranged in positioning pin holes, a positioning pin limiting column is arranged at the tail end of the positioning pin, a spring stopper is arranged on the positioning pin limiting column, the spring is located in the positioning pin hole and supported on the spring stopper, the positioning pin descends along the positioning pin hole, the spring deforms, the positioning pin limiting column is used to limit the descending depth of the positioning pin to avoid the positioning pin from completely descending into the positioning pin hole.

[0007] The spring is mounted on the locating pin limit post.

[0008] The support base is mounted on the side plate. The positioning pin hole includes a pin hole and a positioning rod hole. The pin hole is located on the support base, and the positioning rod hole is located on the side plate. The spring stop block can abut against the pin hole to prevent the positioning pin from disengaging from the positioning pin hole.

[0009] Both the front and rear grippers include a pressure rod. The pressure rod is equipped with a pressure rod pivot. On one side of the pressure rod, a pressure block is provided at the head of the pressure rod, and a hydraulic cylinder is provided at the tail of the pressure rod. The hydraulic cylinder drives the pressure rod to rotate around the pressure rod pivot. The pressure rod drives the pressure block, and the pressure block presses the car steering column onto the support seat.

[0010] As the locating pin descends along the locating pin hole, the spring supports it on the spring stop, providing flexible cushioning for clamping the steering column and preventing hard contact between the steering column and the support seat. The locating pin limiting post restricts the descent depth of the locating pin, ensuring that the head of the locating pin always protrudes from the surface of the support seat. If the head of the locating pin is not accurately positioned within the locating hole of the steering column, the steering column cannot contact the support seat and will fail the air test. This facilitates identification of whether the steering column is accurately positioned and clamped, ensuring effective positioning of the steering column and preventing misalignment during installation. Attached Figure Description

[0011] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0012] Fig. 1 This is a schematic diagram of the positioning fixture structure.

[0013] Fig. 2 This is a schematic diagram of the cross-sectional structure of the positioning fixture.

[0014] Fig. 3 This is a schematic diagram of the positioning fixture in its clamping state. Detailed Implementation

[0015] like Figs. 1-3 As shown, the flexible positioning fixture for the automotive steering column includes a side mounting plate 1, a support base 2 on the side mounting plate 1, a left stop block 3 on the left side of the support base 2, and a right stop block 4 on the right side of the support base 2. The automotive steering column 9 is located on the support base 2 between the left stop block 3 and the right stop block 4. The left stop block 3 pre-positions the left side of the automotive steering column 9, and the right stop block 4 pre-positions the right side of the automotive steering column 9.

[0016] The front end of the support base 2 is provided with a front end clamping jaw 5 for pressing the front end of the automobile steering column 9 on the support base 2, and the rear end of the support base 2 is provided with a rear end clamping jaw 6 for pressing the rear end of the automobile steering column 9 on the support base 2; the front end clamping jaw 5 and the rear end clamping jaw 6 are oppositely arranged in the same structure, and the front end clamping jaw 5 is taken as an example, the clamping jaw comprises a pressing rod 51, a pressing rod rotating shaft 52 is arranged in the middle of the pressing rod 51, the pressing rod rotating shaft 52 is arranged on the side hanging plate 1, a pressing block 53 is arranged at the head of the pressing rod 51 on one side of the pressing rod 51 (located on one side of the automobile steering column 9), and an oil cylinder 54 is arranged at the tail of the pressing rod 51, the oil cylinder 54 is arranged on the side hanging plate 1, the oil cylinder 54 drives the pressing rod 51 to rotate around the pressing rod rotating shaft 52, the pressing rod 51 drives the pressing block 53, and the pressing block 53 presses the automobile steering column 9 on the support base 2.

[0017] A plurality of positioning pins 7 are arranged on the support base 2 and arranged in positioning pin holes, the positioning pin holes comprise a pin rod hole 74 and a positioning rod hole 75, the diameter of the pin rod hole 74 is smaller than the diameter of the positioning rod hole 75, the pin rod hole 74 is arranged on the support base 2 and penetrates through the support base 2, the positioning rod hole 75 is arranged on the side hanging plate 1, the positioning pin 7 is arranged in the rod hole 74, a spring stop block 72 is arranged at the tail end of the positioning pin 7, a positioning pin limiting column 73 is arranged at the tail end of the spring stop block 72, a spring is sleeved on the positioning pin limiting column 73, the spring, the spring stop block 72 and the positioning pin limiting column 73 are arranged in the positioning rod hole 75, the spring is supported on the spring stop block 72, and the spring stop block 72 is arranged at the end of the pin rod hole 74. The positioning pin descends along the positioning pin hole, the spring is deformed, and the positioning pin limiting column is used for limiting the descending depth of the positioning pin, so that the positioning pin is prevented from descending completely into the positioning pin hole.

[0018] When the positioning pin of the embodiment descends along the positioning pin hole, the spring is supported on the spring stop block, flexible buffering is provided for clamping of the automobile steering column, and hard contact of the automobile steering column and the support base is avoided. The positioning pin limiting column of the embodiment limits the descending depth of the positioning pin, so that the head end of the positioning pin always protrudes from the surface of the support base. When the head end of the positioning pin is not accurately positioned in the positioning hole of the automobile steering column, the automobile steering column cannot be contacted on the support base, so that the automobile steering column cannot be checked by air, and whether the automobile steering column is accurately positioned and clamped can be easily identified, the effective positioning of the automobile steering column is ensured, and the situation that the automobile steering column is misassembled is avoided.

[0019] The above embodiment does not limit the utility model in any way, and any technical solution obtained by equivalent replacement or equivalent transformation falls within the protection scope of the utility model.

Claims

1. A flexible positioning fixture for a steering column of a vehicle, characterized in that: The support seat is provided with a left block on the left side and a right block on the right side, and the automobile steering column is located on the support seat between the left block and the right block, the left block prepositions the left side of the automobile steering column, and the right block prepositions the right side of the automobile steering column; the front end of the support seat is provided with a front end clamp jaw for pressing the front end of the automobile steering column on the support seat, and the rear end of the support seat is provided with a rear end clamp jaw for pressing the rear end of the automobile steering column on the support seat; a plurality of positioning pins are arranged on the support seat, the positioning pins are arranged in positioning pin holes, the tail ends of the positioning pins are provided with positioning pin limiting columns, spring blocks are arranged on the positioning pin limiting columns, springs are arranged in the positioning pin holes and supported on the spring blocks, the positioning pins are lowered along the positioning pin holes, the springs are deformed, the positioning pin limiting columns are used for limiting the lowering depth of the positioning pins, and the positioning pins are prevented from being completely lowered into the positioning pin holes.

2. The flexible positioning clamp for a steering column of an automobile according to claim 1, characterized by: The spring is sleeved on the positioning pin limiting column.

3. The flexible positioning fixture for a steering column of an automobile according to claim 1, characterized by: The support seat is arranged on the side hanging plate, the positioning pin hole comprises a pin rod hole and a positioning rod hole, the pin rod hole is located on the support seat, the positioning rod hole is located on the side hanging plate, and the spring block can resist the pin rod hole.

4. The flexible positioning fixture for a steering column of an automobile according to claim 1, characterized by: The front end clamp jaw and the rear end clamp jaw each comprise a pressing rod, the pressing rod is provided with a pressing rod rotating shaft, a pressing block is arranged on the head of the pressing rod on one side of the pressing rod, and an oil cylinder is arranged on the tail of the pressing rod; the oil cylinder drives the pressing rod to rotate around the pressing rod rotating shaft, the pressing rod drives the pressing block, and the pressing block presses the automobile steering column on the support seat.

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