A left front lower longitudinal beam torque inner reinforcing box machining clamp

Abstract

The utility model discloses a left front lower longitudinal beam torque inner reinforcing box processing clamp, including work table and setting positioning assembly, three sets of main clamping component, auxiliary clamping component on the work table, three sets of main clamping component are set up in triangular type distribution, utilize main clamping component to carry out the clamping to workpiece circumference, the utility model utilizes the workpiece on the preset empty positioning, and the preset empty is overlapped with the processing position, utilizes the lift mechanism and the cooperation of elastic pin assembly, removes after completing positioning, avoids the influence workpiece's processing. Through the secondary clamping of multiple main clamping components and auxiliary clamping components, and cooperate second oil pressure support cylinder and support workpiece, avoid workpiece shaking when processing.

Description

Technical Field

[0001] This utility model relates to the field of fixture components, and in particular to a machining fixture for the inner reinforcing box of the left front lower longitudinal beam. Background Technology

[0002] The left front lower longitudinal beam torsion reinforcement box is a metal component installed inside the left front lower longitudinal beam of a vehicle. Its main function is to enhance the torsional rigidity and strength of the longitudinal beam. By adding this structure, deformation caused by torsional forces during vehicle operation can be effectively reduced, thereby improving the vehicle's stability and durability.

[0003] The machining of the torque inner reinforcement box of the left front lower longitudinal beam requires machining multiple holes on its surface. However, the torque inner reinforcement box of the left front lower longitudinal beam is an irregularly shaped product, and conventional fixtures cannot hold it stably and reliably. Utility Model Content

[0004] In view of the above-mentioned defects in the existing technology, the main purpose of this utility model is to overcome the shortcomings of the existing technology and disclose a machining fixture for the torque inner reinforcing box of the left front lower longitudinal beam. The fixture is characterized by including a worktable and a positioning component, three sets of main clamping components, and an auxiliary clamping component disposed on the worktable. The three sets of main clamping components are arranged in a triangular distribution. The main clamping components are used to clamp the workpiece circumferentially.

[0005] The positioning component includes a first elastic pin component, a second elastic pin component, and a lifting mechanism. The second elastic pin component is mounted on the lifting mechanism. The first elastic pin component and the lifting mechanism are spaced apart. The second elastic pin component corresponds to the hole in the middle of the workpiece.

[0006] The auxiliary clamping components are distributed around the workpiece to provide auxiliary clamping in the circumferential direction.

[0007] Furthermore, the main clamping assembly includes a support block and a first lever cylinder. The support block is fixed on the worktable, and the clamping part on the workpiece is pressed onto the support block by the first lever cylinder.

[0008] Furthermore, the first elastic pin assembly includes a fixed base, a first spring, a first guide pin, and a first positioning pin. The fixed base has a recessed guide groove, the first positioning pin is slidably connected to the guide groove, the side wall of the first positioning pin has a recessed first guide groove, the first guide pin is mounted on the fixed base and one end is placed in the guide groove, and the first spring is disposed in the guide groove to provide an upward thrust for the first positioning pin.

[0009] Furthermore, the end of the first locating pin has a diamond-shaped structure and converges towards the center.

[0010] Furthermore, the second elastic pin assembly includes a guide seat, a second positioning pin, a second guide pin, and a second spring. The second positioning pin is slidably connected to the guide seat. A second guide groove is provided on the guide seat. The second guide pin is disposed on the second positioning pin. The second guide groove and the second guide pin limit the movement range of the second positioning pin. The second spring provides an upward driving force for the second positioning pin.

[0011] Furthermore, one end of the second positioning pin has a protruding positioning portion, which is conical, and the other end extends to provide a guide rod. The guide seat has an axially recessed third guide groove that cooperates with the guide rod, and the guide rod is slidably connected to the third guide groove.

[0012] Furthermore, the second guide groove is connected to the third guide groove, the guide rod is radially provided with a mounting hole, the second guide pin is tightly fitted with the mounting hole, and the second guide pin is placed in the second guide groove.

[0013] Furthermore, the second spring is sleeved on the guide rod, and the second spring acts on the guide seat and the second locating pin.

[0014] Furthermore, the auxiliary clamping assembly includes a first hydraulic support cylinder and a second lever cylinder.

[0015] Furthermore, it also includes a second hydraulic support cylinder, which is disposed on the worktable and is used to support the bottom and side plates of the workpiece.

[0016] The beneficial effects achieved by this utility model are:

[0017] This invention utilizes a pre-set opening on the workpiece for positioning, and this opening overlaps with the processing position. A lifting mechanism and an elastic pin assembly work together to remove the opening after positioning, thus avoiding interference with workpiece processing. Multiple sets of main and auxiliary clamping assemblies provide secondary clamping, and a second hydraulic support cylinder further supports the workpiece, preventing it from vibrating during processing. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the blank of the workpiece of this utility model;

[0019] Figure 2 This is a three-dimensional structural diagram of the finished product of the workpiece of this utility model;

[0020] Figure 3 A three-dimensional structural diagram of a machining fixture for the torque inner reinforcing box of the left front lower longitudinal beam;

[0021] Figure 4 This is a top view of a machining fixture for the inner reinforcing box of the left front lower longitudinal beam;

[0022] Figure 5 A schematic diagram showing the cooperation between the main clamping component and the first elastic pin component;

[0023] Figure 6 A three-dimensional structural diagram of the auxiliary clamping component;

[0024] Figure 7 This is a schematic diagram showing the cooperation between the second elastic pin assembly and the lifting mechanism;

[0025] Figure 8 This is a schematic diagram of the second locating pin.

[0026] Figure 9 This is a schematic diagram showing the usage state of a machining fixture for the torque inner reinforcing box of the left front lower longitudinal beam according to this utility model;

[0027] The attached figures are labeled as follows:

[0028] 1. Worktable; 2. Positioning assembly; 3. Main clamping assembly; 4. Auxiliary clamping assembly; 5. Second hydraulic support cylinder.

[0029] 21. First elastic pin assembly; 22. Second elastic pin assembly; 23. Lifting mechanism; 211. Fixed seat; 213. First guide pin; 214. First positioning pin; 2141. First guide groove; 221. Guide seat; 222. Second positioning pin; 223. Second guide pin; 224. Second spring; 2211. Second guide groove; 2212. Third guide groove; 2221. Positioning part; 2222. Guide rod.

[0030] 31. Support base; 32. First lever cylinder;

[0031] 41. First hydraulic support cylinder; 42. Second lever cylinder. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0033] like Figure 1 and Figure 2As shown, the left front lower longitudinal beam torque inner reinforcing box (the workpiece described below) has an irregular shape with a plane. The sides of the plane are diffracted. In this machining process, drilling is required on the plane of the workpiece; therefore, reliable clamping is necessary to ensure machining accuracy. A first positioning hole is pre-drilled on the plane of the workpiece, and this positioning hole requires further machining during processing. A clamping portion is pre-drilled circumferentially on the workpiece, and a second positioning hole is provided on the clamping portion. After the workpiece is machined, it is removed, and the second positioning hole is also removed simultaneously. The workpiece is positioned using the first and second positioning holes.

[0034] A machining fixture for the torque inner reinforcement box of the left front lower longitudinal beam, such as Figures 3-8 As shown, it includes a worktable 1 and a positioning component 2, three sets of main clamping components 3, and an auxiliary clamping component 4 mounted on the worktable 1. The three sets of main clamping components 3 are arranged in a triangular pattern. The main clamping components 3 are used to clamp the workpiece in the circumferential direction.

[0035] The positioning component 2 includes a first elastic pin component 21, a second elastic pin component 22, and a lifting mechanism 23. The second elastic pin component 22 is mounted on the lifting mechanism 23. The first elastic pin component 21 and the lifting mechanism 23 are spaced apart, meaning there is a gap between the first elastic pin component 21 and the second elastic pin component 22. The second elastic pin component 22 corresponds to a first positioning hole. The first elastic pin component 21 corresponds to a first positioning hole. The lifting mechanism 23 is a hydraulic cylinder.

[0036] The auxiliary clamping components 4 are distributed around the workpiece to provide auxiliary clamping for the workpiece in the circumference.

[0037] During clamping, the workpiece is positioned by the positioning component 2, then clamped by the main clamping component 3, and then clamped by the auxiliary clamping component 4. The main clamping component 3 and the auxiliary clamping component 4 work together to clamp the workpiece to ensure clamping reliability.

[0038] In one embodiment, such as Figures 3-8 As shown, the active clamping assembly 3 includes a support base 31 and a first lever cylinder 32. Clamping points are provided on the support base 31 and the first lever cylinder 32, and the clamping part of the workpiece is pressed onto the support base 31 by the first lever cylinder 32.

[0039] In one embodiment, such as Figures 3-8As shown, the auxiliary clamping assembly 4 includes a first hydraulic support cylinder 41 and a second lever cylinder 42. The first hydraulic support cylinder 41 provides adaptive support for the workpiece, and the second lever cylinder 42 presses the clamping part of the workpiece onto the first hydraulic support cylinder 41. That is, after the main clamping assembly 3 completes clamping, the first hydraulic support cylinder 41 drives upward and stops when it contacts the workpiece (after contacting the workpiece, the hydraulic support cylinder will stop driving and maintain its current position after reaching a certain pressure). Then, the second lever cylinder 42 presses the workpiece onto the first hydraulic support cylinder 41, completing the clamping of the workpiece.

[0040] In one embodiment, such as Figures 3-8 As shown, it also includes a second hydraulic support cylinder 5. Several second hydraulic support cylinders 5 are provided, the number depending on the actual support requirements. These second hydraulic support cylinders 5 support the workpiece's plane and side plates. In this embodiment, three second hydraulic support cylinders 5 are provided to support the workpiece's plane, arranged in a triangular pattern. Two second hydraulic support cylinders 5 are provided to support the workpiece's side plates, and these two cylinders are spaced apart. This multi-point support by the second hydraulic support cylinders 5 improves the workpiece's stability during processing.

[0041] In one embodiment, such as Figures 3-8 As shown, the first elastic pin assembly 21 includes a fixed base 211, a first spring, a first guide pin 213, and a first positioning pin 214. The fixed base 211 is mounted on the worktable 1. A guide groove is recessed at the upper end of the fixed base 211. The first positioning pin 214 is slidably connected to the guide groove. A first guide groove 2141 is recessed on the side wall of the first positioning pin 214. The fixed base 211 is provided with a mounting hole. The first guide pin 213 is tightly fitted with the mounting hole, and one end of the first guide pin 213 protrudes from the mounting hole and extends into the guide groove, and is placed in the first guide groove 2141. Through the cooperation of the first guide pin 213 and the first guide groove 2141, the axial movement range of the first positioning pin 214 is guided and limited. The first spring is disposed in the guide groove and acts on the bottom of the guide groove and the bottom of the first positioning pin 214, providing an axial pushing force for the first positioning pin 214.

[0042] In the above embodiments, such as Figures 3-8 As shown, the end of the first locating pin 214 has a diamond-shaped structure and converges towards the center.

[0043] In one embodiment, such as Figures 3-8As shown, the second elastic pin assembly 22 includes a guide seat 221, a second positioning pin 222, a second guide pin 223, and a second spring 224. The second positioning pin 222 is slidably connected to the guide seat 221. A second guide groove 2211 is provided on the guide seat 221. The second guide pin 223 is provided on the second positioning pin 222. The second guide groove 2211 and the second guide pin 223 limit the movement range of the second positioning pin 222. The second spring 224 provides an upward driving force for the second positioning pin 222.

[0044] In the above embodiments, such as Figures 3-8 As shown, one end of the second positioning pin 222 protrudes from the positioning part 2221, and the positioning part 2221 is conical. The other end extends to provide a guide rod 2222. The guide seat 221 is axially recessed to provide a third guide groove 2212 that cooperates with the guide rod. The guide rod 2222 and the third guide groove 2212 are slidably connected.

[0045] In the above embodiments, such as Figures 3-8 As shown, the second guide groove 2211 communicates with the third guide groove 2212, the guide rod 2222 is radially provided with mounting holes, the second guide pin 223 is tightly fitted with the mounting holes, and the second guide pin 223 is placed inside the second guide groove 2211. Preferably, the second guide grooves 2211 are symmetrically arranged. When the second guide pin 223 is assembled with the mounting holes, both ends of the second guide pin 223 protrude from the mounting holes and are placed inside the second guide groove 2211. Thus, through the cooperation of the second guide pin 223, the second guide groove 2211, the guide rod 2222, and the third guide groove 2212, stable and reliable axial movement is achieved.

[0046] In the above embodiments, such as Figures 3-8 As shown, the second spring 224 is sleeved on the guide rod 2222. Therefore, the two ends of the second spring 224 act on the wire 221 and the second positioning pin 222 respectively, and guide the deformation of the second spring 224 through the guide rod 2222.

[0047] When using this utility model, such as Figures 3-9As shown, the positioning holes on the workpiece are placed on the first positioning pin 214 and the second positioning pin 222 respectively. At this time, the workpiece's own weight causes the first spring and the second spring 224 to deform, and the first positioning pin 214 and the second positioning pin 222 to move downward. At the same time, the workpiece is supported on the support base 31. The first lever cylinder 32 presses the workpiece onto the support base 31. Then, the first hydraulic support cylinder 41 rises and contacts the lower surface of the workpiece clamping point and stops, maintaining the stopped position. The second lever cylinder 42 presses the workpiece onto the first hydraulic support cylinder 41. At this time, the clamping of all clamping points is completed. Finally, the second hydraulic support cylinder 5 is pushed out and contacts the lower surface and side of the workpiece for alignment and support. Finally, the lifting mechanism 23 drives the second elastic pin assembly 22 to descend and move away from the positioning hole to avoid the second elastic pin assembly 22 affecting the processing of the workpiece.

[0048] The above are merely preferred embodiments of the present utility model and are not intended to limit the scope of implementation of the present utility model. Any modifications or equivalent substitutions to the present utility model without departing from the spirit and scope thereof shall be covered within the protection scope of the claims of the present utility model.

Claims

1. A machining fixture for the inner reinforcing box of the left front lower longitudinal beam, characterized in that, It includes a worktable and a positioning component mounted on the worktable, three sets of main clamping components, and an auxiliary clamping component. The three sets of main clamping components are arranged in a triangular pattern. The main clamping components are used to clamp the workpiece circumferentially. The positioning component includes a first elastic pin component, a second elastic pin component, and a lifting mechanism. The second elastic pin component is mounted on the lifting mechanism. The first elastic pin component and the lifting mechanism are spaced apart. The second elastic pin component corresponds to the hole in the middle of the workpiece. The auxiliary clamping components are distributed around the workpiece to provide auxiliary clamping in the circumferential direction.

2. The machining fixture for the inner reinforcing box of the left front lower longitudinal beam according to claim 1, characterized in that, The main clamping assembly includes a support block and a first lever cylinder. The support block is fixed on the worktable, and the clamping part on the workpiece is pressed onto the support block by the first lever cylinder.

3. The machining fixture for the inner reinforcing box of the left front lower longitudinal beam according to claim 1, characterized in that, The first elastic pin assembly includes a fixed base, a first spring, a first guide pin, and a first positioning pin. The fixed base has a recessed guide groove. The first positioning pin is slidably connected to the guide groove. The side wall of the first positioning pin has a recessed first guide groove. The first guide pin is mounted on the fixed base, with one end placed in the guide groove. The first spring is disposed in the guide groove to provide an upward thrust for the first positioning pin.

4. The machining fixture for the inner reinforcing box of the left front lower longitudinal beam according to claim 3, characterized in that, The end of the first locating pin has a diamond-shaped structure and converges towards the center.

5. A machining fixture for the inner reinforcing box of the left front lower longitudinal beam according to claim 1, characterized in that, The second elastic pin assembly includes a guide seat, a second positioning pin, a second guide pin, and a second spring. The second positioning pin is slidably connected to the guide seat. A second guide groove is provided on the guide seat. The second guide pin is disposed on the second positioning pin. The second guide groove and the second guide pin limit the movement range of the second positioning pin. The second spring provides an upward driving force for the second positioning pin.

6. A machining fixture for the inner reinforcing box of the left front lower longitudinal beam according to claim 5, characterized in that, One end of the second positioning pin has a protruding positioning part, which is conical, and the other end extends to provide a guide rod. The guide seat has an axially recessed third guide groove that cooperates with the guide rod, and the guide rod is slidably connected to the third guide groove.

7. A machining fixture for the inner reinforcing box of the left front lower longitudinal beam according to claim 6, characterized in that, The second guide groove is connected to the third guide groove, the guide rod is radially provided with a mounting hole, the second guide pin is tightly fitted with the mounting hole, and the second guide pin is placed in the second guide groove.

8. A machining fixture for the inner reinforcing box of the left front lower longitudinal beam according to claim 6, characterized in that, The second spring is sleeved on the guide rod, and the second spring acts on the guide seat and the second locating pin.

9. A machining fixture for the inner reinforcing box of the left front lower longitudinal beam according to claim 1, characterized in that, The auxiliary clamping assembly includes a first hydraulic support cylinder and a second lever cylinder.

10. A machining fixture for the inner reinforcing box of the left front lower longitudinal beam according to claim 1, characterized in that, It also includes a second hydraulic support cylinder, which is disposed on the worktable and is used to support the bottom and side plates of the workpiece.

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