AGV front chassis front and side machining clamp
By designing limiting components and positioning pins in conjunction with support components, and using pressure sensors to detect the position of the AGV's front chassis, the problem of the AGV's front chassis shifting on the fixture was solved, thus improving processing accuracy and stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO JUNLING MOLD TECH
- Filing Date
- 2025-07-11
- Publication Date
- 2026-07-14
AI Technical Summary
During the machining of the AGV front chassis, existing technologies struggle to effectively prevent it from shifting on the fixture, leading to machining errors, and also make it difficult to ensure its accurate positioning on the fixture.
A machining fixture for the front and side of the AGV front chassis was designed. It uses limit components and positioning pins in conjunction with support components and uses pressure sensors to detect the position of the AGV front chassis to ensure its accurate positioning and limitation on the fixture and avoid displacement.
It achieves accurate positioning and limiting of the AGV front chassis during processing, avoiding displacement and improving processing accuracy and stability.
Smart Images
Figure CN224488457U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of machining, and in particular to a machining fixture for the front and side of the AGV front chassis. Background Technology
[0002] In the design of AGVs (Automated Guided Vehicles), the front chassis is one of the core components, directly affecting the vehicle's navigation accuracy, load-bearing capacity, and movement stability. The machining of the AGV front chassis requires processing its front, back, and sides. Typically, this is done in two stages using two fixtures: one stage processes the front and sides of the AGV front chassis, and the other stage processes the back.
[0003] When machining the front and sides of the AGV front chassis, a four-axis machine tool is needed to drive the fixture and the AGV front chassis to rotate. However, the AGV front chassis is usually heavy. If the clamping force of the fixture is poor during rotation, the AGV front chassis is prone to displacement, which will lead to machining errors. In addition, the AGV front chassis has a complex structure, making it difficult to ensure that it is placed in place on the fixture. Summary of the Invention
[0004] This utility model mainly solves the above-mentioned problems and provides a machining fixture for the front and side of the AGV front chassis. It can limit the AGV front chassis to prevent it from shifting when it is flipped, and can also detect whether the position of the AGV front chassis on the fixture is accurate.
[0005] The technical solution adopted by this utility model to solve its technical problem is a machining fixture for the front and side of an AGV front chassis, including a base plate. The base plate has an AGV front chassis placement area in the middle. Several clamping components, several supporting components, several limiting components, and several positioning pins are fixedly arranged on the base plate. The clamping components are arranged around the AGV front chassis placement area. The supporting components are distributed in the AGV front chassis placement area. The limiting components include side limiting components and through limiting components. The side limiting components are located at the edge of the AGV front chassis placement area. The through limiting components correspond to the hollow area on the AGV front chassis. The positioning pins correspond to the through holes on the AGV front chassis. A pressure sensor is arranged on the supporting component.
[0006] As a preferred embodiment of the above solution, the support includes a clamping support, an auxiliary support, and a floating support. The clamping support is provided in a one-to-one correspondence with the clamping assembly. The auxiliary support is located at the edge and center of the AGV front chassis placement area, and the floating support is located in the center of the AGV front chassis placement area.
[0007] As a preferred embodiment of the above solution, the clamping assembly includes a hydraulic cylinder, a pressure block, and a rotating plate. The pressure block includes a connected pressure arm and a drive plate. The hydraulic cylinder base is provided with a rotating connection part. The first end of the rotating plate is rotatably mounted on the rotating connection part. The lower end of the drive plate is rotatably connected to the piston rod of the hydraulic cylinder on the side away from the pressure arm. The lower end of the drive plate is rotatably connected to the second end of the rotating plate on the side close to the pressure arm.
[0008] As a preferred embodiment of the above solution, the pressure arm is located on the upper side of the drive plate, and a pressing part extends downward from the end of the pressure arm.
[0009] As a preferred embodiment of the above solution, the side limiting component matches the edge of the AGV front chassis, and the side limiting component facing the AGV front chassis is an inclined surface that slopes from top to bottom and from the outside to the inside.
[0010] As a preferred embodiment of the above solution, the through-hole limiting component matches the cutout on the front chassis of the AGV, and the cross-section of the through-hole limiting component gradually increases from top to bottom.
[0011] The advantages of this utility model are: the limiting component is set in the hollow of the AGV front chassis, and the positioning pin is set in the through hole of the AGV front chassis, which can limit the AGV front chassis and prevent it from displacing when it is flipped; the support component is equipped with pressure sensors, and by comparing the current pressure value of each pressure sensor with the pressure value of the AGV front chassis when it is in the correct position, it can be determined whether the position of the AGV front chassis on the fixture is accurate. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the structure of the AGV when the front and side machining fixtures of the AGV are used to hold the AGV.
[0013] Figure 2 This is a schematic diagram of the machining fixtures for the front and side of the AGV front chassis.
[0014] Figure 3 for Figure 2 A magnified view of a portion of region A in the middle.
[0015] 1-Base plate 2-Clamping assembly 3-Side limiting component 4-Through limiting block 5-Auxiliary support component 6-Clamping support component 7-Floating support component 8-Positioning pin 22-Pressure arm 23-Drive plate 24-Rotating plate 25-Hydraulic cylinder. Detailed Implementation
[0016] The technical solution of this utility model will be further described below through embodiments and in conjunction with the accompanying drawings.
[0017] Example:
[0018] This embodiment provides a machining fixture for the front and side surfaces of the AGV front chassis, such as... Figure 1 and Figure 2 As shown, the device includes a base plate 1, with an AGV front chassis placement area in the middle of the base plate 1. Several clamping components 2, several support members, several limiting members, and several positioning pins are fixedly installed on the base plate. The clamping components 2 are arranged around the AGV front chassis placement area. The support members are distributed in the AGV front chassis placement area. The limiting members include side limiting members 3 and through limiting members 4. The side limiting members 3 are located at the edge of the AGV front chassis placement area. The through limiting members 4 correspond to the hollow area on the AGV front chassis. The positioning pins 8 correspond to the through holes on the AGV front chassis.
[0019] The support system includes clamping supports 6, auxiliary supports 5, and floating supports 7. Clamping supports 6 correspond one-to-one with clamping components 2. Auxiliary supports 5 are located at the edge and center of the AGV front chassis placement area, and floating supports 7 are located in the center of the AGV front chassis placement area. All supports are equipped with pressure sensors. These pressure sensors detect whether the AGV front chassis is correctly placed on the fixture. When the AGV chassis is placed on the fixture, all supports except the floating supports will contact and support the AGV chassis; therefore, the pressure sensors on these supports will also detect a certain pressure value. By pre-recording the pressure values detected by each pressure sensor when the AGV is correctly placed, and comparing these pre-recorded pressure values with the pressure values when the AGV front chassis is placed, it can be determined whether the AGV front chassis is correctly placed. In addition, secondary confirmation can be performed using a floating support. The floating support is hydraulically controlled, rising to contact the front chassis of the AGV. By pre-recording the hydraulic pressure applied to the floating support, the pressure value detected by the pressure sensor on the floating support when the front chassis of the AGV is correctly placed, and the pressure change of the pressure sensors on the auxiliary and support components after the floating support contacts the front chassis of the AGV, the same hydraulic pressure is used to drive the floating support during secondary confirmation. The recorded values are then compared with the pressure values detected by the pressure sensors on the floating support and the pressure changes of the pressure sensors on the auxiliary and support components.
[0020] like Figure 3As shown, the clamping assembly includes a hydraulic cylinder 25, a pressure block, and a rotating plate 24. The pressure block includes a connected pressure arm 22 and a drive plate 23. The pressure arm 22 is located on the upper side of the drive plate 23, and a pressing part extends downward from the end of the pressure arm 22. A rotating connection part is provided on the base of the hydraulic cylinder. The first end of the rotating plate 24 is rotatably mounted on the rotating connection part. The lower end of the drive plate 23, away from the pressure arm 22, is rotatably connected to the piston rod of the hydraulic cylinder. The lower end of the drive plate 23, near the pressure arm 22, is rotatably connected to the second end of the rotating plate 24. When the hydraulic cylinder 25 retracts, the piston rod of the hydraulic cylinder drives the rotating plate 24 to rotate towards the piston rod through the drive plate 23, so that the pressure arm 22 can be fully inserted above the hydraulic cylinder, facilitating the placement of the AGV front chassis.
[0021] Furthermore, the side limiting component 3 matches the edge of the AGV front chassis, and the side limiting component 3 facing the AGV front chassis has an inclined surface that slopes from top to bottom and from the outside to the inside. The through-type limiting component 4 matches the cutout on the AGV front chassis, and the cross-section of the through-type limiting component 4 gradually increases from top to bottom. The inclined surface of the side limiting component 3 and the design of the through-type limiting component 4 (smaller at the top and larger at the bottom) facilitate the placement of the AGV front chassis, while the inclined surface and the gradually changing cross-section can guide the AGV front chassis to a certain extent, guiding the AGV to the accurate position.
[0022] In this embodiment, the front and side processing fixtures of the AGV front chassis have limiting components installed in the hollow of the AGV front chassis, and positioning pins installed in the through holes of the AGV front chassis. These can limit the movement of the AGV front chassis and prevent it from shifting when it is flipped. The support is equipped with pressure sensors. By comparing the current pressure values of each pressure sensor with the pressure values of the AGV front chassis when it is in the correct position, it can be determined whether the position of the AGV front chassis on the fixture is accurate.
[0023] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.
Claims
1. A machining fixture for the front and side surfaces of an AGV front chassis, characterized in that: The system includes a base plate with an AGV front chassis placement area in the center. Several clamping components, supporting members, limiting members, and positioning pins are fixedly mounted on the base plate. The clamping components surround the AGV front chassis placement area. The supporting members are distributed within the AGV front chassis placement area. The limiting members include side limiting members and through-hole limiting members. The side limiting members are located at the edge of the AGV front chassis placement area, and the through-hole limiting members correspond to the hollowed-out areas on the AGV front chassis. The positioning pins correspond to the through holes on the AGV front chassis. Pressure sensors are mounted on the supporting members.
2. The AGV front chassis front and side processing fixture according to claim 1, characterized in that: The support includes a clamping support, an auxiliary support, and a floating support. The clamping support is provided in a one-to-one correspondence with the clamping assembly. The auxiliary support is located at the edge and center of the AGV front chassis placement area, and the floating support is located in the center of the AGV front chassis placement area.
3. The AGV front chassis front and side processing fixture according to claim 1 or 2, characterized in that: The clamping assembly includes a hydraulic cylinder, a pressure block, and a rotating plate. The pressure block includes a connected pressure arm and a drive plate. The hydraulic cylinder base is provided with a rotating connection part. The first end of the rotating plate is rotatably mounted on the rotating connection part. The lower end of the drive plate is rotatably connected to the piston rod of the hydraulic cylinder on the side away from the pressure arm. The lower end of the drive plate is rotatably connected to the second end of the rotating plate on the side close to the pressure arm.
4. The AGV front chassis front and side processing fixture according to claim 3, characterized in that: The pressure arm is located on the upper side of the drive plate, and a pressing part extends downward from the end of the pressure arm.
5. The AGV front chassis front and side machining fixture according to claim 1, characterized in that: The side limiting component matches the edge of the AGV front chassis, and the side limiting component facing the AGV front chassis has an inclined surface that slopes from top to bottom and from the outside to the inside.
6. The AGV front chassis front and side machining fixture according to claim 1, characterized in that: The insertion limiting component matches the cutout on the front chassis of the AGV, and the cross-section of the insertion limiting component gradually increases from top to bottom.