CN223629890U - A fork-type part drilling and milling combined machining fixture - Google Patents

Abstract

A fork-type milling and drilling compound machining fixture includes a base plate, a first positioning plate, a second positioning plate, a floating V-block, a pneumatic clamping device, and a manual clamping device. It has the advantages of accurate positioning and fast clamping for workpieces that need to be milled and drilled in multiple passes, avoiding the problem of multiple clamping and alignment of workpieces during processing, reducing the impact of datum non-coincidence and decreased processing accuracy caused by different processing positions of the same workpiece, and improving production efficiency.

Description

Shifting fork type part drilling and milling composite machining clamp

Technical Field

The utility model belongs to the technical field of machining, and relates to a shifting fork type part drilling and milling composite machining clamp which is used for positioning and clamping shifting fork type parts in numerical control machining.

Background

Shifting fork parts are commonly used in gear shifting systems, and specific uses include automotive gearboxes, machine tool gear shifting devices, and the like. In the processing of shifting fork type parts, the clamping mode of the workpiece is often required to be replaced aiming at different characteristics of the workpiece so as to meet the processing requirement. The frequent operation process of replacing the clamp is very complicated, and meanwhile, the phenomenon of uneven reference and the like possibly occur in the process of replacing the clamp, thereby directly affecting the production efficiency, the processing cost, the precision and the like of the product.

In order to improve the machining efficiency of shifting fork type parts and simultaneously maintain the machining precision of the parts, the shifting fork type part drilling and milling composite machining clamp is provided, the problems that in numerical control machining of the type of parts, the reference is not uniform due to repeated clamping, the machining precision is low and the like are solved, the machining cost is reduced, and the machining efficiency is improved.

Therefore, the design of the shifting fork type part drilling and milling composite machining fixture can rapidly position, clamp and fix shifting fork type parts, realize one-time clamping and can finish multiple process machining, and the fixture is convenient to operate, high in clamping efficiency and beneficial to improving the machining precision and the machining efficiency of the parts.

Disclosure of Invention

The technical scheme adopted by the utility model is as follows:

a shifting fork type part drilling and milling composite machining clamp comprises a bottom plate 1, a first positioning plate 2, a second positioning plate 3, a floating V-shaped block 4, a pneumatic clamping device 5 and a manual clamping device 6, wherein the bottom plate 1 is an L-shaped plate, the bottom plate 1 is fixedly arranged on a numerical control machine tool, 2U-shaped waist slots are arranged on the horizontal plate, and 2U-shaped waist slots are arranged on the vertical plate;

The floating V-shaped block 4 mainly comprises a V-shaped block 4-1, guide posts 4-2, springs 4-3, a supporting plate 4-4, nuts 4-5 and screws 4-6, wherein the guide posts 4-2 are fixedly connected with the supporting plate 4-4 through the screws 4-6, through holes are formed in two sides of the V-shaped block 4-1 and matched with the guide posts 4-2, the springs 4-3 are distributed between the upper top surface of the supporting plate 4-4 and the lower bottom surface of the V-shaped block 4-1 along the guide posts 4-2, the nuts 4-5 are connected with the guide posts 4-2, and the supporting plate 4-4 is fixedly installed with the bottom plate 1 through positioning pins 4-7;

The pneumatic clamping device 5 mainly comprises an air cylinder 5-1, a telescopic rod 5-2 and a pressing block 5-3, wherein the pneumatic clamping device 5 is fixed on a vertical plate of the bottom plate 1, the air cylinder 5-1 is connected with the telescopic rod 5-2, and the pressing block 5-3 is fixedly connected with the telescopic rod 5-2;

The manual clamping device 6 comprises a handle 6-1, a connecting rod 6-2, a rocker 6-3 and a base 6-4, wherein the base 6-4 is fixed on the base plate 1, the handle 6-1 is hinged with the base 6-4 and can rotate around a hinge point, the connecting rod 6-2 is simultaneously hinged with the handle 6-1 and the rocker 6-3 and can rotate around the hinge point, and the rocker 6-3 is hinged with the base 6-4 and can rotate around the hinge point.

The shifting fork type part drilling and milling composite machining clamp has the advantages of being accurate in positioning, fast in clamping, capable of machining multiple working procedures in one-time clamping and the like, solves the difficult problems of multiple clamping and alignment of shifting fork type parts in machining of different working procedures, and reduces the influence of reference misalignment and machining precision of the same workpiece caused by machining of different positions.

Drawings

Fig. 1 is a structural diagram of the present utility model.

FIG. 2 is a block diagram of a floating V-block of the present utility model.

Fig. 3 is a diagram of a manual clamping device of the present utility model.

FIG. 4 is a diagram of a pneumatic clamp of the present utility model.

Fig. 5 is a diagram showing a structure of a fork according to the present utility model.

Detailed Description

The utility model will be described in detail below with reference to the drawings and the detailed description.

As shown in FIG. 1, the shifting fork type part drilling and milling composite machining clamp comprises six parts, namely a bottom plate 1, a first positioning plate 2, a second positioning plate 3, a floating V-shaped block 4, a pneumatic clamping device 5 and a manual clamping device 6.

The bottom plate 1 is an L-shaped plate, the bottom plate 1 is fixedly arranged on a numerical control machine tool, 2U-shaped waist grooves are formed in a horizontal plate, 2U-shaped waist grooves are formed in a vertical plate, the first positioning plate 2 is fixedly connected with the vertical plate of the bottom plate 1, and the second positioning plate 3 is fixedly connected with the horizontal plate of the bottom plate 1.

The floating V-shaped block 4 comprises a V-shaped block 4-1, a guide post 4-2, a spring 4-3, a support plate 4-4, a nut 4-5 and a screw 4-6, wherein the guide post 4-2 is fixedly connected with the support plate 4-4 through the screw 4-6, through holes are formed in two sides of the V-shaped block 4-1 and matched with the guide post 4-2, the spring 4-3 is distributed between the upper top surface of the support plate 4-4 and the lower bottom surface of the V-shaped block 4-1 along the guide post 4-2, the nut 4-5 is connected with the guide post 4-2, the support plate 4-4 is fixedly installed with the bottom plate 1, the V-shaped block 4-1 is pushed to always keep contact with the outer circular surface of a part through the acting force of the spring, the centering axis is positioned, the V-shaped block 4-1 is subjected to the downward pressure and is transmitted to the spring 4-3 in the clamping process, the spring 4-3 is stressed to downward to enable the V-shaped block 4-1 to axially move along the guide post 4-2, and the axial freedom degree along the guide post is released, and the overstocking is avoided.

The pneumatic clamping device 5 comprises an air cylinder 5-1, a telescopic rod 5-2 and a pressing block 5-3, wherein the pneumatic clamping device 5 is fixed on a vertical plate of the bottom plate 1, the air cylinder 5-1 is connected with the telescopic rod 5-2, the pressing block 5-3 is fixedly connected with the telescopic rod 5-2, and when the pneumatic clamping device works, the position of the telescopic rod 5-2 is controlled by controlling the starting and stopping of the air cylinder 5-1, and the pressing block 5-3 is indirectly controlled to compress a workpiece.

The manual clamping device 6 comprises a handle 6-1, a connecting rod 6-2, a rocker 6-3 and a base 6-4, wherein the base 6-4 is fixed on the bottom plate 1, the handle 6-1 is hinged with the base 6-4 and can rotate around a hinge point, the connecting rod 6-2 is simultaneously hinged with the handle 6-1 and the rocker 6-3 and can rotate around the hinge point, the rocker 6-3 is hinged with the base 6-4 and can rotate around the hinge point, when the clamping device works, the handle 6-1 is manually controlled to rotate to drive the connecting rod 6-2 to rotate, and when the handle 6-1 and the connecting rod 6-2 are positioned in the same straight line, the manual clamping device 6 is positioned at a dead point position to realize clamping of a workpiece by the rocker 6-3.

When the fixture is used, the fixture body is fixedly arranged on a milling machine working platform through the U-shaped waist groove on the bottom plate 1, a workpiece 7 is vertically placed on the upper surface of the second positioning plate 3, the plane at the left end of the workpiece 7 is in contact with the first positioning plate 2, the floating V-shaped block 4 is in contact with the outer circle of the workpiece 7 under the action of a spring to realize the positioning of a central shaft, so that the workpiece 7 is completely positioned, the workpiece 7 is clamped through the pneumatic clamping device 5 and the manual clamping device 6, after the drilling of the workpiece 7 is finished, the whole fixture body can be turned over, the vertical plate of the bottom plate 1 is fixedly connected with a drilling machine working table, the drilling of the workpiece 7 is carried out under the condition that the position of a tool is not changed, after the drilling is finished, the pneumatic clamping device 4 and the manual clamping device 6 are used for clamping the workpiece 7, and the workpiece 7 is taken down, and the drilling is finished.

Claims (4)

1. A fork-type part drilling and milling composite machining fixture, characterized in that: it comprises six parts: a base plate (1), a first positioning plate (2), a second positioning plate (3), a floating V-block (4), a pneumatic clamping device (5), and a manual clamping device (6); the base plate (1) is an L-shaped plate, the base plate (1) is fixedly installed on a CNC machine tool, the horizontal plate is provided with two U-shaped grooves, and the vertical plate is provided with two U-shaped grooves; the first positioning plate (2) is fixedly connected to the vertical plate of the base plate (1); the second positioning plate (3) is fixedly connected to the horizontal plate of the base plate (1). 2. A fork-type part drilling and milling compound machining fixture according to claim 1, characterized in that: the floating V-block (4) includes a V-block (4-1), a guide post (4-2), a spring (4-3), a support plate (4-4), a nut (4-5), and a screw (4-6); the guide post (4-2) is fixedly connected to the support plate (4-4) by the screw (4-6); the V-block (4-1) has through holes on both sides to cooperate with the guide post (4-2); the spring (4-3) is distributed along the guide post (4-2) between the top surface of the support plate (4-4) and the bottom surface of the V-block (4-1); the nut (4-5) is connected to the guide post (4-2); and the support plate (4-4) is fixedly installed to the base plate (1) by the positioning pin (4-7). 3. A fork-type part drilling and milling composite machining fixture according to claim 1, characterized in that: the pneumatic clamping device (5) includes a cylinder (5-1), a telescopic rod (5-2), and a pressure block (5-3); the pneumatic clamping device (5) is fixed on the vertical plate of the base plate (1), the cylinder (5-1) is connected to the telescopic rod (5-2), and the pressure block (5-3) is fixedly connected to the telescopic rod (5-2). 4. A fork-type part drilling and milling composite machining fixture according to claim 1, characterized in that: the manual clamping device (6) includes a handle (6-1), a connecting rod (6-2), a rocker arm (6-3), and a base (6-4); the base (6-4) is fixed on the base plate (1), the handle (6-1) is hinged to the base (6-4) and can rotate around the hinge point, the connecting rod (6-2) is hinged to both the handle (6-1) and the rocker arm (6-3) and can rotate around the hinge point, and the rocker arm (6-3) is hinged to the base (6-4) and can rotate around the hinge point.