A front subframe straightening detection tool for an automobile
By designing a calibration and inspection fixture for the front subframe of an automobile, and using multi-directional correction components to position and correct the Al-Si alloy subframe, the problem of deformation during the casting process was solved, the product qualification rate and processing efficiency were improved, and the cost was reduced.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JINGMEN HANGTE NON-FERROUS METAL CASTING CO LTD
- Filing Date
- 2025-06-09
- Publication Date
- 2026-06-02
AI Technical Summary
Al-Si alloy subframes are prone to deformation during casting, placement, and subsequent heat treatment, leading to problems such as thin walls, misaligned holes, and lack of light penetration during machining, which affects machining efficiency and cost.
A tooling for calibrating and inspecting a front subframe of an automobile was designed. The tooling uses a combination of pneumatic and hydraulic cylinders to calibrate the subframe in the X, Y, and Z directions. The tooling utilizes components such as a front stop positioning and clamping assembly, a rear positioning and clamping assembly, a suspension clamping cylinder, a crossbeam clamping cylinder, and a yoke clamping cylinder to position and correct the subframe.
This improved the overall product qualification rate and machining efficiency, ensured the quality of castings, and reduced processing costs.
Smart Images
Figure CN224309343U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of casting straightening technology, specifically to a tooling for testing and straightening of a front subframe of an automobile. Background Technology
[0002] Lightweight chassis design is an inevitable choice for the country's development of new energy vehicles to reduce energy consumption and emissions. More and more automakers are choosing Al-Si alloy casting to manufacture subframes. Currently, Al-Si alloy subframes are mainly of two types: split and integral. Whether split or integral, castings are prone to deformation during casting, placement, and subsequent heat treatment, leading to issues such as thin walls, misaligned holes, and lack of luster during machining. This affects machining efficiency and wastes machining costs. Therefore, it is necessary to inspect and correct the castings to ensure their quality. Utility Model Content
[0003] The purpose of this utility model is to address the above-mentioned shortcomings by providing a tooling for the calibration and testing of a front subframe of an automobile.
[0004] This utility model includes an orthopedic table. The four corners of the orthopedic table are respectively provided with a pair of front-end stop block positioning and clamping components and a pair of rear-end positioning and clamping components in a symmetrical manner. The orthopedic table located on the right rear-end positioning and clamping component is provided with a rear-end end support column. The middle part of the orthopedic table is provided with a suspension clamping cylinder, a pair of crossbeam clamping cylinders, a pair of horn clamping cylinder groups, a pair of horn top pressing cylinders and a pair of front-end frame clamping cylinders in sequence from front to back. The pair of crossbeam clamping cylinders, the pair of horn clamping cylinder groups, the pair of horn top pressing cylinders and the pair of front-end frame clamping cylinders are all symmetrically installed on the left and right sides of the orthopedic table.
[0005] The front stop positioning and clamping assembly includes a positioning support base and a front clamping cylinder. The top of the positioning support base is provided with an L-shaped positioning groove, and adjustment positioning blocks are provided at both ends of the L-shaped positioning groove. The piston rod of the front clamping cylinder is provided with a front pressing block, and one end of the front pressing block is located directly above the positioning support base.
[0006] The adjusting positioning block is slidably installed in the L-shaped positioning groove via the adjusting screw.
[0007] The rear-end positioning and clamping assembly includes a rear-end side clamping cylinder and a positioning pin disposed opposite to the rear-end side clamping cylinder. The piston rod of the rear-end side clamping cylinder is provided with a clamping block, and the straightening table is provided with a positioning pin mounting bracket, on which the positioning pin is mounted.
[0008] A rear-end top clamping cylinder is provided between the rear-end side clamping cylinder and the positioning pin on the left side. The piston rod of the rear-end top clamping cylinder is connected to a sliding groove, and a C-shaped clamping block is slidably provided on the sliding groove. A rear-end end clamping cylinder is provided on the straightening table on one side of the rear-end end support column. A rear-end end pressing block is provided on the piston rod of the rear-end end clamping cylinder. One end of the rear-end end pressing block is located directly above the rear-end end support column.
[0009] The suspension clamping cylinder, the crossbeam clamping cylinder, the pair of ram horn top pressing cylinders, and the pair of front frame clamping cylinders all have the same structure as the rear top pressing cylinder.
[0010] The two C-shaped clamping blocks of a pair of crossbeam clamping cylinders are connected by a clamping plate. The pair of crossbeam clamping cylinders are synchronous cylinders. A front frame middle support column is provided on the straightening platform located between a pair of front frame clamping cylinders.
[0011] The ram's horn clamping cylinder assembly includes a horizontal clamping cylinder and a vertical clamping cylinder that are arranged vertically. The piston rod of the horizontal clamping cylinder is provided with a vertical sliding groove, and the piston rod of the vertical clamping cylinder is provided with a horizontal sliding groove. The vertical sliding groove and the horizontal sliding groove are slidably connected by a C-shaped ram's horn positioning block.
[0012] The advantages of this utility model are: it adopts the form-fitting positioning of the boss of the subframe body, firstly by a set of cylinders for quick clamping, and then by a set of hydraulic cylinders for X, Y and Z direction correction of the overall frame, crossbeam, steering knuckle and suspension of the subframe, thereby improving the overall product qualification rate and machining efficiency. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of this utility model.
[0014] Figure 2 This is a schematic diagram of the front stop positioning and clamping component.
[0015] Figure 3 This is a schematic diagram of the back-end positioning and clamping component structure.
[0016] Figure 4 This is a schematic diagram of the ram's horn clamping cylinder assembly.
[0017] Figure 5 This is a schematic diagram of the structure of this utility model in use. Detailed Implementation
[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.
[0020] In the description of the embodiments of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, they are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the utility model. Furthermore, if terms such as "first" or "second" appear in the description of this utility model, they are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0021] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0022] As shown in the attached figure, the present invention includes an orthopedic table 1. A pair of front-end stop block positioning and clamping components 2 and a pair of rear-end positioning and clamping components 3 are symmetrically arranged at the four corners of the orthopedic table 1. A rear-end support column 4 is provided on the orthopedic table 1 located on the right rear-end positioning and clamping component 3. From front to back, the middle part of the orthopedic table 1 is provided with a suspension clamping cylinder 5, a pair of crossbeam clamping cylinders 6, a pair of horn clamping cylinder groups 7, a pair of horn top pressing cylinders 8, and a pair of front-end frame clamping cylinders 9. The pair of crossbeam clamping cylinders 6, the pair of horn clamping cylinder groups 7, the pair of horn top pressing cylinders 8, and the pair of front-end frame clamping cylinders 9 are all symmetrically installed on the left and right sides of the orthopedic table 1.
[0023] The front subframe has a symmetrical structure. During the straightening process, the front end of the front subframe is positioned and clamped by a pair of front stop positioning and clamping components 2, and the rear end is positioned and clamped by a pair of rear end positioning and clamping components 3, so that the front subframe is fixed. Then, the suspension clamping cylinder 5, a pair of crossbeam clamping cylinders 6, a pair of horn clamping cylinder groups 7, a pair of horn top pressing cylinders 8 and a pair of front frame clamping cylinders 9 are activated to straighten the various parts of the front subframe.
[0024] A pair of rear-end positioning clamping assemblies 3 straighten the two ends of the rear of the front subframe after clamping; suspension clamping cylinders 5 straighten the suspension area of the front subframe; a pair of crossbeam clamping cylinders 6 straighten the crossbeam of the front subframe; a pair of yoke clamping cylinders 7 and a pair of yoke top pressing cylinders 8 work together to straighten the two yokes of the front subframe; and a pair of front frame clamping cylinders 9 straighten the front frame of the front subframe.
[0025] Preferably, the front stop positioning and pressing assembly 2 includes a positioning support 10 and a front pressing cylinder 11. The top of the positioning support 10 is provided with an L-shaped positioning groove, and adjustment positioning blocks 13 are provided at both ends of the L-shaped positioning groove. The piston rod of the front pressing cylinder 11 is provided with a front pressing block 12, and one end of the front pressing block 12 is located directly above the positioning support 10.
[0026] The adjusting positioning block 13 is slidably installed in the L-shaped positioning groove by adjusting the screw.
[0027] The two protruding feet at the bottom front end of the front subframe are inserted between the two adjusting positioning blocks 13 in the L-shaped positioning groove, and then the front clamping cylinder 11 presses down to fix it on the top of the front subframe. The adjusting positioning block 13 is a movable connecting part. The position of the positioning block 13 can be adjusted by moving the adjusting screw to facilitate the smooth positioning of the two protruding feet at the bottom front end of the front subframe.
[0028] Preferably, the rear-end positioning clamping assembly 3 includes a rear-end side clamping cylinder 15 and a positioning pin 16 disposed opposite to the rear-end side clamping cylinder 15. The piston rod of the rear-end side clamping cylinder 15 is provided with a clamping block, and the straightening table 1 is provided with a positioning pin mounting bracket. The positioning pin 16 is mounted on the positioning pin mounting bracket.
[0029] The rear side clamping cylinder 15 presses the two sides of the rear end of the front subframe from the X-axis direction to straighten it.
[0030] The positioning pin 16 is set opposite to the rear side clamping cylinder 15 to observe whether the correction in the X-axis direction at both ends of the rear of the front subframe is qualified.
[0031] Furthermore, a rear-end top clamping cylinder 18 is provided between the rear-end side clamping cylinder 15 and the positioning pin 16 on the left side. The piston rod of the rear-end top clamping cylinder 18 is connected to a sliding groove, and a C-shaped clamping block is slidably provided on the sliding groove. A rear-end end clamping cylinder 19 is provided on the straightening table 1 located on one side of the rear-end end support column 4. A rear-end end pressing block 20 is provided on the piston rod of the rear-end end clamping cylinder 19. One end of the rear-end end pressing block 20 is located directly above the rear-end end support column 4.
[0032] The rear top clamping cylinder 18 straightens the left side of the rear end of the front subframe from the Z-axis direction downward. The C-shaped clamping block is a movable part. When the front subframe is positioned, the C-shaped clamping block is moved backward to facilitate the positioning of the front subframe. After positioning, the C-shaped clamping block is moved forward and inserted into the rear end of the front subframe, and then straightened by the rear top clamping cylinder 18.
[0033] The rear end clamping cylinder 19 and the rear end support column 4 are used for clamping and fixing when the front subframe is installed and positioned.
[0034] Preferably, the suspension clamping cylinder 5, the crossbeam clamping cylinder 6, the pair of horn top pressing cylinders 8 and the pair of front frame clamping cylinders 9 have the same structure as the rear top pressing cylinder 18, and all of them are used to correct various parts of the front subframe in the Z-axis direction.
[0035] Furthermore, the two C-shaped clamping blocks of the pair of crossbeam clamping cylinders 6 are connected by a clamping plate 23. The pair of crossbeam clamping cylinders 6 are synchronous cylinders. The straightening table 1 located between the pair of front frame clamping cylinders 9 is provided with a front frame middle support column 24.
[0036] Since the crossbeam is a narrow, thin-walled structure, it is prone to deformation under pressure. The clamping plate 23 can be used to correct the overall deformation and effectively prevent deformation during the correction process.
[0037] The central support column 24 of the front frame provides support from the bottom, and a pair of front frame clamping cylinders 9 are located on both sides of the central support column 24 of the front frame, pressing the front frame from top to bottom, thereby completing the correction of the front frame.
[0038] Preferably, the ram's horn clamping cylinder assembly 7 includes a transverse clamping cylinder 26 and a longitudinal clamping cylinder 27 that are vertically distributed. The piston rod of the transverse clamping cylinder 26 is provided with a longitudinal sliding groove, and the piston rod of the longitudinal clamping cylinder 27 is provided with a transverse sliding groove. The longitudinal sliding groove and the transverse sliding groove are slidably connected by a C-shaped ram's horn positioning block 28.
[0039] The lateral clamping cylinder 26 corrects the horn from the X-axis direction, and the longitudinal clamping cylinder 27 corrects the horn from the Y-axis direction. The cooperation of the lateral clamping cylinder 26 and the longitudinal clamping cylinder 27 controls the movement of the C-shaped horn positioning block 28 in the X-axis and Y-axis directions respectively to complete the correction of the horn part.
Claims
1. A tooling for calibrating and inspecting a front subframe of an automobile, characterized in that... The orthopedic table (1) includes a pair of front-end stop block positioning and clamping components (2) and a pair of rear-end positioning and clamping components (3) symmetrically arranged at the four corners of the orthopedic table (1). The orthopedic table (1) located on the right rear-end positioning and clamping component (3) is provided with a rear end support column (4). The middle part of the orthopedic table (1) is provided with a suspension clamping cylinder (5), a pair of crossbeam clamping cylinders (6), a pair of horn clamping cylinder groups (7), a pair of horn top pressing cylinders (8) and a pair of front-end frame clamping cylinders (9) in sequence from front to back. The pair of crossbeam clamping cylinders (6), the pair of horn clamping cylinder groups (7), the pair of horn top pressing cylinders (8) and the pair of front-end frame clamping cylinders (9) are all symmetrically installed on the left and right sides of the orthopedic table (1).
2. The automotive front subframe calibration and inspection fixture according to claim 1, characterized in that... The front stop positioning and pressing assembly (2) includes a positioning support (10) and a front pressing cylinder (11). The top of the positioning support (10) is provided with an L-shaped positioning groove, and at both ends of the L-shaped positioning groove are respectively provided with adjusting positioning blocks (13). The piston rod of the front pressing cylinder (11) is provided with a front pressing block (12), and one end of the front pressing block (12) is located directly above the positioning support (10).
3. The automotive front subframe calibration and inspection fixture according to claim 2, characterized in that... The adjusting positioning block (13) is slidably installed in the L-shaped positioning groove by adjusting the screw.
4. The automotive front subframe calibration and inspection fixture according to claim 1, characterized in that... The rear positioning clamping assembly (3) includes a rear side clamping cylinder (15) and a positioning pin (16) disposed opposite to the rear side clamping cylinder (15). The piston rod of the rear side clamping cylinder (15) is provided with a clamping block, and the straightening table (1) is provided with a positioning pin mounting bracket. The positioning pin (16) is mounted on the positioning pin mounting bracket.
5. The automotive front subframe calibration and inspection fixture according to claim 4, characterized in that... A rear-end top clamping cylinder (18) is provided between the rear-end side clamping cylinder (15) and the positioning pin (16) on the left side. The piston rod of the rear-end top clamping cylinder (18) is connected to a sliding groove, and a C-shaped clamping block is slidably provided on the sliding groove. A rear-end end clamping cylinder (19) is provided on the straightening table (1) located on one side of the rear-end end support column (4). A rear-end end pressing block (20) is provided on the piston rod of the rear-end end clamping cylinder (19). One end of the rear-end end pressing block (20) is located directly above the rear-end end support column (4).
6. The automotive front subframe calibration and inspection fixture according to claim 5, characterized in that... The suspension clamping cylinder (5), the crossbeam clamping cylinder (6), a pair of ram horn top pressing cylinders (8) and a pair of front frame clamping cylinders (9) have the same structure as the rear top pressing cylinder (18).
7. The automotive front subframe calibration and inspection fixture according to claim 6, characterized in that... The two C-shaped clamping blocks of a pair of beam clamping cylinders (6) are connected by a clamping plate (23). The pair of beam clamping cylinders (6) are synchronous cylinders. A front frame middle support column (24) is provided on the straightening table (1) located between a pair of front frame clamping cylinders (9).
8. The automotive front subframe calibration and inspection fixture according to claim 1, characterized in that... The ram's horn clamping cylinder assembly (7) includes a horizontal clamping cylinder (26) and a vertical clamping cylinder (27) distributed vertically. The piston rod of the horizontal clamping cylinder (26) is provided with a vertical sliding groove, and the piston rod of the vertical clamping cylinder (27) is provided with a horizontal sliding groove. The vertical sliding groove and the horizontal sliding groove are slidably connected by a C-shaped ram's horn positioning block (28).