Axle part telescopic side positioning mechanism

Abstract

The utility model relates to a kind of vehicle axle parts telescopic side positioning mechanism, and the utility model discloses a kind of vehicle axle parts telescopic side positioning mechanism, which is designed for the existing vehicle axle adopts half-round buckle locking type locking structure, the opening of the differential position of vehicle axle is difficult to adjust in subsequent processing process, and the utility model discloses a kind of vehicle axle parts telescopic side positioning mechanism, by side telescopic knot to the upper clamping operation of vehicle axle, including: jig sub edition, positioning module and pre-positioning module are set on jig sub edition, a pair of slide rails are set on jig sub edition;Pre-positioning module includes: long-stroke telescopic oil cylinder, the telescopic end of long-stroke telescopic oil cylinder is fixed with positioning module;Pre-positioning support, pre-positioning support is set on long-stroke telescopic oil cylinder upper by support adjusting block;Positioning module includes: oil cylinder vertical seat, set on slide rail, bottom and pre-positioning module cooperate, top set oil cylinder;The telescopic end of oil cylinder is coaxially sleeved with positioning expansion sleeve, the fixed part of positioning expansion sleeve is fixed with the cylinder body of oil cylinder, and the telescopic end of oil cylinder points to pre-positioning module.

Description

Technical Field

[0001] This utility model relates to a clamping tool for machining axles, specifically a telescopic side positioning mechanism for axle parts. Background Technology

[0002] The axle connects to the chassis and mounts the wheels via the suspension, primarily responsible for load transfer and maintaining driving function. Structurally, it can be divided into two types: integral axle used in conjunction with non-independent suspension, and disconnect axle used in conjunction with independent suspension. The steering drive axle uses a hollow axle housing design, with an internal differential dividing the drive shaft into two half-shafts with universal joints, achieving both steering and driving functions. When machining the hollow axle housing, it needs to be fixed from both ends. Traditionally, this is done using two semi-circular locking components. However, this method has a drawback: machining the hollow axle housing requires determining the horizontal plane of its central opening. While the fixture using this locking method is simple and practical, it makes determining the center plane difficult, time-consuming, and labor-intensive. Even a single error in the center plane can cause machining problems in the differential chamber, resulting in defective products. Summary of the Invention

[0003] This invention addresses the problem of existing axle locking structures using a semi-circular latch, which makes it difficult to adjust the opening at the axle differential position during subsequent processing. A telescopic side positioning mechanism for axle parts is designed, using a side telescopic joint to clamp the axle, and an expansion structure to fix the axle. The contraction of the expansion structure provides adjustable allowance for the axle during clamping. Combined with the automatic leveling mechanism of a CNC lathe and the expansion structure, the opening of the axle's center differential chamber is leveled, thereby improving the finished product's yield.

[0004] The axle component telescopic side positioning mechanism includes: The fixture sub-plate is equipped with a positioning module and a pre-positioning module, and a pair of slide rails. Pre-positioning module, including: The long-stroke telescopic hydraulic cylinder has its telescopic end fixed to the positioning module, and the positioning module slides along the slide rail on the fixture subplate. The pre-positioning support is set above the long-stroke telescopic cylinder via a support adjustment block; The top of the support adjusting block is provided with a pair of T-slots, and the pre-positioned support is engaged with the T-slots by bolts; The positioning module includes: The hydraulic cylinder support is mounted on the slide rail, with its bottom engaging with the pre-positioning module and its top housing the hydraulic cylinder. A positioning expansion sleeve is coaxially sleeved on the telescopic end of the hydraulic cylinder. The fixed part of the positioning expansion sleeve is fixed to the cylinder body of the hydraulic cylinder, and the telescopic end of the hydraulic cylinder points to the pre-positioning module.

[0005] When using the telescopic positioning mechanism for axle parts of this invention, the mechanism is used in pairs, with the telescopic positioning mechanism for axle parts of this invention used at both ends of the axle being clamped. The clamping process is the same at both ends, therefore, only one end will be described.

[0006] The axle is placed on the pre-positioned support, and then the long-stroke telescopic cylinder retracts to insert the positioning expansion sleeve of the positioning module into the inner ring of the axle end. The positioning expansion sleeves on both sides are coaxial. When the positioning expansion sleeve begins to expand, the axle is positioned.

[0007] In conjunction with the automatic calibration mechanism inside the CNC machine tool, if a leveling problem is detected in the differential chamber opening of the axle, the positioning expansion sleeve will partially retract to release the complete lock. The leveling mechanism inside the CNC machine tool will maintain the leveling, and the positioning expansion sleeve will expand and contract again to complete the positioning.

[0008] Preferably, the top of the pre-positioning support is provided with an inverted trapezoidal groove, which is an isosceles trapezoid, and the perpendicular bisector of the long side of the trapezoid intersects with the extension and retraction line of the hydraulic cylinder of the positioning module.

[0009] As a preferred option, a secondary adjustable mechanism is also provided under the fixture sub-plate.

[0010] Secondary adjustable agencies include: A slider mounting slot is provided under the fixture sub-plate; The fixture base plate is equipped with a pair of linear guide rails, and the sliders of the linear guide rails are set in the slider mounting slots. A rack is installed on the base plate of the fixture; An adjusting handwheel is provided on the side of the fixture subplate. A gear is provided on the shaft of the adjusting handwheel, and the gear meshes with a rack. The adjusting handwheel is hinged to the fixture subplate. The side of the fixture plate is equipped with a lateral locking mechanism, which works in conjunction with the rack.

[0011] The secondary adjustable mechanism is mainly used to adapt to axles of different lengths.

[0012] Preferably, the lateral locking mechanism includes a dovetail groove with a downward opening parallel to the tooth groove direction of the rack, a locking slider is provided in the dovetail groove, a locking rack is provided at the bottom of the locking slider, and the locking rack cooperates with the rack on the fixture base plate. The tooth groove ends of the locking rack are chamfered.

[0013] Preferably, the linear guide rail uses a roller slider. Roller sliders offer the advantage of high precision, which is beneficial for determining the actual position of the fixture sub-plate.

[0014] The beneficial effects of this utility model are: it can be adapted to the processing of axles of different lengths and is compatible with the automatic leveling function of automatic lathes, thereby reducing the need for manual leveling when clamping axles. Attached Figure Description

[0015] Figure 1 Overall perspective view of this utility model; Figure 2 A perspective view of the pre-positioning module and the positioning module of this utility model; Figure 3 This utility model Figure 2 Vertical cross-sectional view; Figure 4 This utility model Figure 1 Side view; In the diagram: 1. Fixture plate, 2. Long-stroke telescopic cylinder, 3. Support adjusting block, 4. Pre-positioning support, 5. Cylinder stand, 6. Cylinder, 7. Positioning expansion sleeve, 8. Slide rail, 9. Linear slide rail, 10. Fixture base plate, 11. Rack, 12. Adjusting handwheel, 13. Lateral locking mechanism. Detailed Implementation

[0016] The technical solution of this utility model will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings. Example 1

[0017] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the axle component telescopic side positioning mechanism includes: Fixture sub-plate 1, the fixture sub-plate is equipped with a positioning module and a pre-positioning module, and the fixture sub-plate is equipped with a pair of slide rails; Pre-positioning module, including: Long-stroke telescopic cylinder 2, the telescopic end of the long-stroke telescopic cylinder is fixed to the positioning module, and the positioning module slides along the slide rail 8 on the fixture subplate; The pre-positioning support 4 is set above the long-stroke telescopic cylinder via the support adjustment block 3; The top of the support adjusting block 3 is provided with a pair of T-slots, and the pre-positioned support is engaged with the T-slots by bolts; The positioning module includes: The cylinder support 5 is made of carbon steel and is set on the slide rail. Its bottom is matched with the pre-positioning module and the cylinder 6 is set on the top. A positioning expansion sleeve 7 is coaxially sleeved on the telescopic end of the hydraulic cylinder 6. The fixed part of the positioning expansion sleeve is fixed to the cylinder body of the hydraulic cylinder, and the telescopic end of the hydraulic cylinder points to the pre-positioning module.

[0018] When using the telescopic positioning mechanism for axle parts of this invention, the mechanism is used in pairs, with the telescopic positioning mechanism for axle parts of this invention used at both ends of the axle being clamped. The clamping process is the same at both ends, therefore, only one end will be described.

[0019] The axle is placed on the pre-positioned support, and then the long-stroke telescopic cylinder retracts to insert the positioning expansion sleeve of the positioning module into the inner ring of the axle end. The positioning expansion sleeves on both sides are coaxial. When the positioning expansion sleeve begins to expand, the axle is positioned.

[0020] In conjunction with the automatic calibration mechanism inside the CNC machine tool, if a leveling problem is detected in the differential chamber opening of the axle, the positioning expansion sleeve will partially retract to release the complete lock. The leveling mechanism inside the CNC machine tool will maintain the leveling, and the positioning expansion sleeve will expand and contract again to complete the positioning.

[0021] The top of the pre-positioning support 4 is provided with an inverted trapezoidal groove, which is an isosceles trapezoid, and the perpendicular bisector of the long side of the trapezoid intersects with the extension and retraction line of the hydraulic cylinder of the positioning module.

[0022] A secondary adjustable mechanism is also provided under the fixture sub-plate.

[0023] Secondary adjustable agencies include: A slider mounting slot is provided under the fixture sub-plate; The fixture base plate 10 is provided with a pair of linear slide rails 9, and the sliders of the linear slide rails 9 are arranged in the slider mounting grooves. A rack 11 is provided on the base plate of the fixture; An adjusting handwheel 12 is provided on the side of the fixture subplate. A gear is provided on the rotating shaft of the adjusting handwheel, and the gear meshes with a rack. The adjusting handwheel is hinged to the fixture subplate. The side of the fixture plate is provided with a lateral locking mechanism, which cooperates with the rack.

[0024] The secondary adjustable mechanism is mainly used to adapt to axles of different lengths.

[0025] The lateral locking mechanism includes a dovetail groove with a downward opening parallel to the tooth groove direction of the rack. A locking slider is provided in the dovetail groove, and a locking rack is provided at the bottom of the locking slider. The locking rack cooperates with the rack on the fixture base plate. The tooth groove ends of the locking rack are chamfered.

[0026] The linear guide rail uses a roller slider. Roller sliders offer the advantage of high precision, which is beneficial for determining the actual position of the fixture sub-plate.

[0027] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A telescopic side positioning mechanism for axle components, characterized in that, include: The fixture sub-plate is equipped with a positioning module and a pre-positioning module, and a pair of slide rails are provided on the fixture sub-plate. Pre-positioning module, including: The long-stroke telescopic hydraulic cylinder has its telescopic end fixed to the positioning module, and the positioning module slides along the slide rail on the fixture subplate. The pre-positioning support is set above the long-stroke telescopic cylinder via a support adjustment block; The top of the support adjusting block is provided with a pair of T-slots, and the pre-positioned support is engaged with the T-slots by bolts; The positioning module includes: The hydraulic cylinder support is mounted on the slide rail, with its bottom engaging with the pre-positioning module and its top housing the hydraulic cylinder. A positioning expansion sleeve is coaxially sleeved on the telescopic end of the hydraulic cylinder. The fixed part of the positioning expansion sleeve is fixed to the cylinder body of the hydraulic cylinder, and the telescopic end of the hydraulic cylinder points to the pre-positioning module.

2. The axle component telescopic side positioning mechanism according to claim 1, characterized in that, The top of the pre-positioning support is provided with an inverted trapezoidal groove, which is an isosceles trapezoid, and the perpendicular bisector of the long side of the trapezoid intersects the extension and retraction line of the hydraulic cylinder of the positioning module.

3. The axle component telescopic side positioning mechanism according to claim 1 or 2, characterized in that, A secondary adjustable mechanism is also provided under the fixture sub-plate; Secondary adjustable agencies include: A slider mounting slot is provided under the fixture sub-plate; The fixture base plate is equipped with a pair of linear guide rails, and the sliders of the linear guide rails are set in the slider mounting slots. A rack is installed on the base plate of the fixture; An adjusting handwheel is provided on the side of the fixture subplate. A gear is provided on the shaft of the adjusting handwheel, and the gear meshes with a rack. The adjusting handwheel is hinged to the fixture subplate. The side of the fixture plate is equipped with a lateral locking mechanism, which works in conjunction with the rack.

4. The axle component telescopic side positioning mechanism according to claim 3, characterized in that, The lateral locking mechanism includes a dovetail groove with a downward opening parallel to the tooth groove direction of the rack. A locking slider is provided in the dovetail groove, and a locking rack is provided at the bottom of the locking slider. The locking rack cooperates with the rack on the fixture base plate. The tooth groove ends of the locking rack are chamfered.

5. The axle component telescopic side positioning mechanism according to claim 3, characterized in that, The slider of the linear guide rail uses a roller slider.

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