CN202922284U - Angle iron type lathe fixture - Google Patents

Abstract

The utility model discloses an angle iron type lathe fixture, which comprises a clamp body, on which a bracket angle iron, a supporting angle iron and a positioning shaft angle iron are sequentially arranged from top to bottom, and a pressing angle iron is arranged on the bracket angle iron. Screws and movable blocks, the lower end of the compression screw passes through the movable block and is connected with the pressure head, and the movable block is hinged on the angle iron of the bracket; on the supporting angle iron, there are diamond pins and supporting nails for workpiece positioning; on the angle iron of the positioning shaft There is a positioning shaft on it. The utility model is suitable for the clamping of fuel injection pump parts with complex shapes, adopts axial clamping, compact structure, simple, convenient and reliable operation, reduces labor intensity of workers, and improves production efficiency.

Description

An angle iron lathe fixture

technical field

The utility model relates to a lathe clamp, in particular to an angle iron lathe clamp for drilling parts holes of a fuel injection pump on a lathe.

Background technique

With the rapid development of the automobile industry, the demand for automobile diesel engines is increasing day by day. As an important part of diesel engines, fuel injection pumps also increase the market demand for fuel injection pumps. At present, most of the holes of fuel injection pump parts are processed by drilling machines. Due to the particularity of the shape and structure of fuel injection pump parts, the design of drilling machine fixtures is more difficult and the production preparation period is prolonged. At the same time, the existing fuel injection pump parts drilling machine fixtures are complicated to operate and labor-intensive Large, low production efficiency.

Contents of the invention

In order to overcome the problems existing in the prior art, the purpose of this utility model is to provide an angle iron lathe fixture for machining the holes of fuel injection pump parts. The lathe fixture is suitable for clamping fuel injection pump parts with complex shapes and adopts axial clamping , compact structure, simple, convenient and reliable operation, which reduces the labor intensity of workers and improves production efficiency.

The purpose of this utility model is achieved through the following technical solutions:

An angle iron type lathe fixture is characterized in that: the angle iron type lathe fixture includes a clamp body, on the clamp body, a bracket angle iron, a supporting angle iron and a positioning shaft angle iron are sequentially arranged on the clamp body, and the bracket angle iron There are compression screws and movable blocks on the top, the lower end of the compression screws passes through the movable block and is connected with the pressure head, and the movable block is hinged on the angle iron of the bracket; on the supporting angle iron, there are rhombus pins and supporting nails for workpiece positioning; A positioning shaft is arranged on the positioning shaft angle iron.

In the utility model, the lower end of the positioning shaft passes through the middle long groove of the positioning shaft angle iron, and is fixed on the positioning shaft angle iron by a locking nut. A correction ring for adjusting the position of the positioning shaft is provided on the clamp body.

In the utility model, the angle iron type lathe clamp is positioned by the notch of the clamp body, and is installed on the main shaft of the lathe through the transition plate. A correction ring is provided on the clamp body. The bracket angle iron, the support angle iron and the positioning shaft angle iron are all connected with the clamp body by screws. The diamond-shaped pin and the supporting angle iron are connected by thread; the supporting nail and the supporting angle iron are connected by thread. The workpiece is clamped by the pressure head after the cylindrical inner hole, the step surface and the round hole on the step surface are positioned on the positioning shaft, the support nail and the diamond pin.

The working principle of the utility model is:

According to the radial basic size of the cylindrical inner hole of the fuel injection pump part to be processed, design and process the positioning axis; according to the size of the circular hole on the step surface of the workpiece, design and process the diamond pin; and use the cylindrical inner hole, step surface and The circular holes on the step surface complete the positioning on the positioning shaft, supporting nails and diamond pins. Pull the movable block, so that the movable block rotates around the hinge to the clamping position of the workpiece, tighten the compression screw, so that the pressure head presses the workpiece downward (the pressure head and the compression screw are connected by a retaining ring, which can ensure that the pressure head clamps the workpiece When the workpiece is only pressed down, it does not rotate with the rotation of the compression screw; at the same time, when the pressing surface of the workpiece is uneven, the effective clamping of the workpiece by the pressure head can still be ensured). When the workpiece has finished machining the hole, unscrew the compression screw to loosen the workpiece, pull back the loose block, and then the free loading and unloading of the workpiece can be realized.

The utility model can realize the clamping of the parts of the fuel injection pump. Axial clamping is used to eliminate the error caused by the deformation of the workpiece due to radial clamping; for parts with different cylindrical inner hole sizes, the workpiece can be clamped only by replacing the positioning shaft, thereby effectively reducing Fixture design and manufacturing costs and production preparation cycle. The pressure head and the compression screw are connected by a retaining ring, which can ensure that the pressure head only presses the workpiece downward when clamping the workpiece, and does not rotate with the rotation of the compression screw; at the same time, when the compression surface of the workpiece is uneven, it can still ensure Effective clamping of the workpiece by the indenter. Setting the correction ring on the clamp body can ensure that the axis of the hole to be processed on the workpiece is consistent with the axis of the machine tool spindle by adjusting the position of the positioning axis, so as to meet the position accuracy requirements of the hole and ensure the processing quality of the part.

The utility model adopts axial clamping, compact structure, simple, convenient and reliable operation, reduces labor intensity of workers and improves production efficiency.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Detailed ways

An angle iron type lathe fixture, see Figure 1, the lathe fixture includes clamp body 1, bracket angle iron 2, support angle iron 9, positioning shaft angle iron 11, compression screw 4, loose block 5, pressure head 7, hinge 3. Diamond pin (not shown in the figure), support nail (not shown in the figure), positioning shaft 10, lock nut 13 and screw 15. The clamp body 1 positioned by the seam is installed on the lathe spindle through the transition plate; the bracket angle iron 2, the support angle iron 9 and the positioning shaft angle iron 13 are all connected with the clamp body 1 by screws 15; the compression screw 4 passes through the movable block 5 Finally, it is connected with the pressure head 7 through the retaining ring 6; the movable block 5 is connected with the bracket angle iron 2 through the hinge 3; the diamond pin (not shown in the figure) is threaded with the support angle iron 9; the support nail (not shown in the figure Out) and the supporting angle iron 9 are threadedly connected; after the positioning shaft 10 passes through the middle long groove of the positioning shaft angle iron 11, the washer 12 is set and connected with the lock nut 13. The middle part of the positioning shaft angle iron 11 is provided with a long groove, and a correction ring 14 is provided on the chuck body 1, through which the position of the positioning shaft 10 can be adjusted to ensure that the axis of the hole to be processed on the workpiece 8 is consistent with the axis of the machine tool spindle, thereby Meet the position accuracy requirements of the hole and ensure the processing quality of the workpiece.

The utility model adopts axial clamping, compact structure, simple, convenient and reliable operation, reduces labor intensity of workers and improves production efficiency.

Claims (3)

1. angle bar formula turning attachment, it is characterized in that: this angle bar formula turning attachment comprises clamp body (1), on clamp body (1), from top to bottom be provided with successively support angle bar (2), support angle (9) and locating shaft angle bar (11), be provided with housing screw (4), loose piece (5) and pressure head (7) at support angle bar (2), the lower end of housing screw (4) is connected with pressure head (7) after passing loose piece (5), and loose piece (5) is hinged on the support angle bar (2); Be provided with rhombus pin and the supporting nail of workpiece location usefulness in support angle (9); Be provided with locating shaft (10) at locating shaft angle bar (11).

2. angle bar formula turning attachment according to claim 1, it is characterized in that: the middle part elongated slot of locating shaft angle bar (11) is passed in the lower end of locating shaft (10), and is fixed on the locating shaft angle bar (11) by locking nut (13).

3. angle bar formula turning attachment according to claim 1 is characterized in that: the corrector loop (14) that is provided with to adjust locating shaft (10) position at clamp body (1).

Images