Position-variable pneumatic machining clamp for automobile doorsill beam

Abstract

A position-variable pneumatic machining clamp for an automobile doorsill beam belongs to the technical field of machining and is characterized in that a whole bearing base is a rectangular hollow tool bottom plate, and a square supporting block and a long-strip-shaped side positioning block are fixedly connected to the bottom plate through bolts and used for supporting and positioning a workpiece; the connecting plate and the positioning connecting piece are connected and fixed to the bottom plate through bolts and used for fixing the assembly; the positioning air cylinder is connected to the positioning connecting piece through a bolt and used for positioning a workpiece. The downward pressing air cylinder and the side jacking air cylinder are connected and fixed to the connecting plate through bolts and used for pressing and jacking. The position-variable pneumatic machining clamp for the automobile doorsill beam has the beneficial effects that a traditional clamping mode according to working procedures is changed, a workpiece can be quickly clamped, and machining of all working procedures of the workpiece can be completed at a time. And the clamping time of sub-working procedures is shortened, the efficient production takt is guaranteed, and the machining efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of machining. Background Art

[0002] At present, the production cycle of automobile sill beam parts is very fast and the processing efficiency is high. However, the machining fixtures used are still traditional, process-based fixtures. Such fixtures need to be clamped in different processes during machining. For example, if a workpiece needs four-sequence machining, it needs to be equipped with a four-sequence machining device to clamp the workpiece, and it takes time for manual clamping of the workpiece four times. Such a fixture with process-based clamping has low clamping and production efficiency, high production cost, and cannot meet the requirements of fast production cycle and high processing efficiency of automobile parts. Summary of the invention

[0003] The utility model aims to provide a pneumatic clamping device with variable position for automobile door sill beams, which can be clamped once and complete all machining processes of a workpiece quickly and at one time.

[0004] The technical solution of the utility model is: the entire load-bearing base is a rectangular hollow tooling base plate, the square support block and the long strip side positioning are fixed on the base plate by bolt connection, and are used to support and position the workpiece; the connecting plate and the positioning connecting piece are fixed on the base plate by bolt connection, and are used to fix the assembly; the positioning cylinder is connected to the positioning connecting piece by bolts, and is used to position the workpiece; the downward pressure cylinder and the side push cylinder are fixed on the connecting plate by bolt connection, and are used to press and push.

[0005] The beneficial effects of the utility model are as follows: the pneumatic clamping device for the variable position of the automobile door sill beam changes the traditional clamping method of each process, so that the workpiece can be clamped quickly and all the machining processes of the workpiece can be completed at one time, which reduces the clamping time of each process, ensures efficient production rhythm and improves processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0007] Figure 2 It is a front view of the utility model;

[0008] Figure 3 It is a top view of the utility model;

[0009] Figure 4 It is a schematic diagram of clamping a workpiece of the utility model; DETAILED DESCRIPTION

[0010] The utility model is further described below in conjunction with the accompanying drawings:

[0011] like Figures 1-4As shown, 1 is the bottom plate, 2 is the support block A, 3 is the support block B, 4 is the downward pressing cylinder A, 5 is the connecting plate A, 6 is the side pressing cylinder A, 7 is the support block C, 8 is the side pressing cylinder B, 9 is the connecting plate B, 10 is the downward pressing cylinder B, 11 is the support block D, 12 is the side positioning A, 13 is the side positioning B, 14 is the positioning cylinder, 15 is the positioning connecting piece, 16 is the workpiece, 17 is the positioner, and 18 is the machine tool workbench.

[0012] As Figures 1-3 shown, the support block A 2, the support block B 3, the support block C 7, and the support block D 11 are bolted to the bottom plate 1, the connecting plate A 5, the connecting plate B 9, the side positioning A 12, the side positioning B 13, and the positioning connecting piece 15 are bolted to the bottom plate 1, the downward pressing cylinder A 4 and the side pressing cylinder A 6 are bolted to the connecting plate A 5, the downward pressing cylinder B 10 and the side pressing cylinder B 8 are bolted to the connecting plate B 9, and the positioning cylinder 14 is bolted to the positioning connecting piece 15, which together form the entire tooling. The support block A 2, the support block B 3, the support block C 7, and the support block D 11 are made of aluminum, and the rest are made of Q235.

[0013] As Figures 1-3 shown, its working principle is as follows:

[0014] The support block A 2, the support block B 3, the support block C 7, and the support block D 11 are used for support, the side positioning A 12, the side positioning B 13, and the positioning cylinder 14 are used for positioning, the downward pressing cylinder A 4 and the downward pressing cylinder B 10 are used for clamping, and the side pressing cylinder A 6 and the side pressing cylinder B 8 are used for pressing tightly.

[0015] As Figure 4 shown, the usage method of the present utility model is as follows:

[0016] Fix the positioner 17 on the designated machine tool workbench 18, install the entire tooling on the positioner 17, place the workpiece 16 to be machined on the designated position of the tooling, and press the left end of the workpiece 16 against the cylinder rod of the positioning cylinder 14. Start the pneumatic switch. First, the cylinder rod of the positioning cylinder 14 moves downward to avoid the end machining position, then the side pressing cylinder A 6 and the side pressing cylinder B 8 press tightly against the workpiece 16, and then the pressing arms of the downward pressing cylinder A 4 and the downward pressing cylinder B 10 rotate 90 degrees and then clamp the workpiece 16. During the machining process, the machining program controls the positioner 17 to drive the tooling to rotate freely by 360°, machining all the features of the workpiece 16.

[0017] After the machining is completed, the machining program controls the positioner 17 to drive the tooling back to the initial state, turn off the pneumatic switch. First, the cylinder rod of the positioning cylinder 14 moves upward to return to the designated position, then the side pressing cylinder A 6 and the side pressing cylinder B 8 retract to release the workpiece 16, and then the downward pressing cylinder A 4 and the downward pressing cylinder B 10 retract, and the cylinder pressing arms release the workpiece 16 and rotate 90 degrees to avoid the workpiece. At this time, the machined finished workpiece 16 can be taken out.

Claims

1. A variable-position pneumatic motor plus fixture for an automotive sill beam, characterized in that: The entire load-bearing base is a rectangular hollow tooling base plate. The square support blocks and the long strip-shaped side positioners are connected and fixed to the base plate by bolts, and are used to support and position the workpiece. The connecting plate and the positioning connecting piece are connected and fixed to the base plate by bolts, and are used to fix the components. The positioning cylinder is connected to the positioning connecting piece by bolts and is used to position the workpiece. The downward pressing cylinder and the side pressing cylinder are connected and fixed to the connecting plate by bolts and are used to press and clamp tightly.

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