Compression type multidirectional positioning tool used during shell machining

Abstract

The utility model discloses a compression type multi-directional positioning tool used during shell machining, and belongs to the technical field of tool clamps. The clamp comprises a clamp body and is characterized in that a linear lifting oil cylinder is arranged in the middle of the clamp body, the end of a lifting rod of the linear lifting oil cylinder is connected with a lifting tray, and two coarse positioning guide pins are arranged on the clamp body. A plurality of hydraulic lever cylinders are arranged on the upper side of the clamp body and located on the periphery of the lifting tray to press a workpiece supporting and positioning face, a spring lifting type floating supporting cylinder is arranged on the edge of the upper side of the clamp body to serve as auxiliary supporting and positioning, and two fine positioning pins are arranged on the upper side of the clamp body and close to the lifting tray. According to the utility model, the problems of collision damage to a processed surface and insufficient processing strength of the workpiece caused by manual installation of a larger shell workpiece can be avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of tooling fixtures, and in particular relates to a clamping multi-directional positioning tool used for processing a shell. Background Art

[0002] When a horizontal machining center processes a larger shell workpiece, if the workpiece is directly precisely positioned manually during manual installation, it will cause knocks and scratches on the precision positioning holes and machining surfaces of the workpiece. At the same time, the workpiece may be over-positioned or have insufficient machining strength due to inconsistent blanks, resulting in reduced machining yield and efficiency. Utility Model Content

[0003] The utility model aims at the above-mentioned problems, makes up for the deficiencies of the prior art, and provides a clamping multi-directional positioning tool for processing shells; the utility model can avoid the problems of bumps and scratches on the processed surface and insufficient workpiece processing strength caused by manual installation of larger shell workpieces.

[0004] To achieve the above purpose, the utility model adopts the following technical solutions.

[0005] The utility model provides a clamping multi-directional positioning tool for processing a shell, comprising a fixture body, characterized in that a linear lifting cylinder is arranged in the middle of the fixture body, the end of the lifting rod of the linear lifting cylinder is connected to a lifting pallet, two coarse positioning guide pins are arranged on the fixture body, a plurality of hydraulic lever cylinders are arranged on the upper side of the fixture body on the periphery of the lifting pallet to clamp the workpiece support positioning surface, a spring lifting type floating support cylinder is arranged on the edge of the upper side of the fixture body as an auxiliary support positioning, and two fine positioning pins are arranged on the upper side of the fixture body close to the lifting pallet.

[0006] Furthermore, one of the two precision positioning pins is a diamond pin and the other is a cylindrical pin.

[0007] The beneficial effects of the utility model.

[0008] The utility model avoids the bumps and damages to the processed surface caused by the manual installation of larger shell parts during production through the mutual cooperation of various components, solves the problem of over-positioning of the workpiece due to inconsistent blanks caused by the rigid support positioning of the tooling, ensures the strength of the workpiece during processing, and improves the processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific implementation methods described here are only used to explain the utility model and are not used to limit the utility model.

[0010] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model in an axial side view.

[0011] Figure 2 It is a front view structural schematic diagram of the utility model.

[0012] Figure 3 This is a top view of the structure of the utility model

[0013] Figure 4 It is a schematic diagram of the three-dimensional structure of the utility model after the workpiece is installed in the axial side view.

[0014] Markings in the figure: 1 is the fixture body, 2 is the linear lifting cylinder, 3 is the lifting tray, 4 is the coarse positioning guide pin, 5 is the hydraulic lever cylinder, 6 is the spring lifting floating support cylinder, 7 is the fine positioning pin, and 8 is the workpiece. DETAILED DESCRIPTION

[0015] As shown in the accompanying drawings, this embodiment provides a clamping multi-directional positioning tool for processing a shell, including a fixture body 1, a linear lifting cylinder 2 is arranged in the middle of the fixture body 1, and a lifting tray 3 is connected to the end of the lifting rod of the linear lifting cylinder 2. The lifting tray 3 is driven to lift and lower by the linear lifting cylinder 2, and the lifting tray 3 is used to support the workpiece 8.

[0016] Two rough positioning guide pins 4 are arranged on the fixture body 1. Four hydraulic lever cylinders 5 are arranged on the upper side of the fixture body 1 outside the lifting tray 3 to press the support positioning surface of the workpiece 8 as a rigid support positioning. The positioning surface is the processing plane.

[0017] A spring-lifting floating support cylinder 6 is provided on the upper edge of the fixture body 1 as an auxiliary support and positioning, and the positioning surface is the blank surface. This solves the problem of over-positioning of the workpiece 8 due to inconsistent blanks if the tooling is only positioned by the rigid support of the hydraulic lever cylinder 5.

[0018] Two precision positioning pins 7 are arranged on the upper side of the clamp body 1 near the lifting tray 3 , wherein one of the two precision positioning pins 7 is a diamond pin and the other is a cylindrical pin.

[0019] When the workpiece 8 is installed, the lifting tray 3 is in a raised state. The operator holds the workpiece 8 with both hands and places the two rough-machined holes of the workpiece 8 onto the lifting tray 3 through two rough positioning guide pins 4 to perform the first rough positioning of the workpiece 8.

[0020] After installation, the action sequence of the tooling is as follows: the lifting tray 3 descends to guide the two precision positioning holes of the workpiece 8 into the two precision positioning pins 7, and the processing surface fits the positioning surface; the hydraulic lever cylinder 5 used for rigid support presses the positioning surface of the workpiece 8 (the positioning surface is the processing plane), and leaves one hydraulic lever cylinder 5 without moving first; the spring lifting floating support cylinder 6 rises to perform auxiliary support positioning of the workpiece 8 (the positioning surface is the blank surface); the remaining hydraulic lever cylinder 5 moves to press the positioning surface of the workpiece 8; and processing begins.

[0021] The lifting pallet 3 is used to lift the workpiece 8 and ensure that the positioning hole is aligned with the positioning pin. After the pallet is lowered, the positioning hole of the workpiece 8 is guided into the fine positioning pin 7, and the processed surface is fitted with the positioning surface. Then the hydraulic lever cylinder 5 drives the pressure plate to press the hard support positioning surface of the workpiece 8. After about 2 seconds, the spring lifting floating support cylinder 6 rises to provide auxiliary support positioning for the fourth point of the blank surface of the workpiece 8, which solves the problem of over-positioning of the workpiece 8 caused by inconsistent blanks if the tooling only uses hard support positioning. After the auxiliary support positioning, the last hydraulic lever cylinder 5 presses the workpiece 8. Through this positioning and clamping method, the strength of the workpiece 8 during processing is effectively guaranteed, and the processing efficiency is improved.

[0022] It can be understood that the above specific description of the utility model is only used to illustrate the utility model and is not limited to the technical solution described in the implementation mode of the utility model. Ordinary technicians in the field should understand that the utility model can still be modified or replaced by equivalents to achieve the same technical effect; as long as the use requirements are met, they are within the protection scope of the utility model.

Claims

1. A clamping multi-directional positioning tool for processing a shell, comprising a clamp body (1), characterized in that: A linear lifting cylinder (2) is arranged in the middle of the clamp body (1), and the end of the lifting rod of the linear lifting cylinder (2) is connected to a lifting tray (3). Two rough positioning guide pins (4) are arranged on the clamp body (1). A plurality of hydraulic lever cylinders (5) are arranged on the upper side of the clamp body (1) on the periphery of the lifting tray (3) to press the support and positioning surface of the workpiece (8). A spring lifting type floating support cylinder (6) is arranged on the edge of the upper side of the clamp body (1) as an auxiliary support and positioning. Two fine positioning pins (7) are arranged on the upper side of the clamp body (1) near the lifting tray (3).

2. The clamping multi-directional positioning tool for processing a shell according to claim 1, characterized in that: One of the two precision positioning pins (7) is a diamond pin and the other is a cylindrical pin.

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