CN201988936U - Automatic clamping hydraulic device for ordinary vertical milling machine - Google Patents

Abstract

The utility model discloses an automatic clamping hydraulic device for an ordinary vertical milling machine, which mainly solves the problem that no automatic workpiece clamping device is arranged on an existing ordinary vertical milling machine. The utility model is characterized in that the automatic clamping hydraulic device is composed of a solenoid valve unit, a hydraulic oil cylinder unit and a clamp unit, wherein the solenoid valve unit comprises an overflow valve (2), a two-position four-way reversing valve (3), a one-way valve (4) and a flow dividing and collecting valve (11) which are connected in sequence based on requirements of a hydraulic pipeline; the hydraulic oil cylinder unit is composed of a first hydraulic oil cylinder (5) and a second hydraulic oil cylinder (8); and the clamp unit is composed of a first movable clamp (6), a second movable clamp (9), a first fixed clamp (7) and a second fixed clamp (10); pistons in the first hydraulic oil cylinder (5) and the second hydraulic oil cylinder (8) are fixedly connected with connecting rod ends of the first movable clamp (6) and the second movable clamp (9) respectively; and the hydraulic pipeline communication between a hydraulic pump unit and the hydraulic oil cylinder unit is realized through the solenoid valve unit. The device has the characteristic of simple structure, and the labor intensity of an operator can be greatly reduced when products are processed in batches.

Description

An automatic clamping hydraulic device for ordinary end milling machines

technical field

The utility model relates to an auxiliary device used on an ordinary end milling machine, in particular to an auxiliary device used on an ordinary end milling machine to realize automatic clamping of workpieces.

Background technique

Ordinary end milling machine is a machine tool that mills workpieces with milling cutters. In addition to milling planes, grooves, gear teeth, threads and spline shafts, it can also process more complex profiles. Therefore, ordinary end milling machines are widely used in machinery manufacturing and repair departments. However, after a long period of application, it is found that the following problems exist in the existing ordinary end milling machines: when milling on ordinary end milling machines, the workpiece is usually clamped by manual clamping, and when a large number of workpieces are milled When processing, it will inevitably lead to high labor intensity and low production efficiency of workers, making it difficult to guarantee the quality of processed products.

Contents of the invention

In order to solve the problems existing in the prior art proposed by the background technology, the utility model provides an automatic clamping hydraulic device for ordinary end milling machines, which has the advantages of simple structure, convenient operation, fast clamping, safe and stable use, etc. Features, when processing products in large quantities, it can greatly reduce the labor intensity of the operator.

The technical solution of the utility model is: the automatic clamping hydraulic device for ordinary end milling machines includes a hydraulic pump unit and a corresponding control system formed by connecting a hydraulic oil tank, a gear pump and a motor. In addition, the automatic The clamping hydraulic device also includes a solenoid valve unit composed of a relief valve, a two-position four-way reversing valve, a one-way valve, and a flow diversion and flow valve connected in sequence according to the requirements of the hydraulic pipeline, and a hydraulic cylinder composed of the first and second hydraulic cylinders. A hydraulic cylinder unit composed of a hydraulic cylinder unit, and a clamp unit composed of the first and second movable clamps and the first and second fixed clamps; the pistons in the first and second hydraulic cylinders are respectively connected to the connecting rod ends of the first and second movable clamps A fixed connection is made, and the hydraulic pump unit and the hydraulic cylinder unit realize hydraulic pipeline communication through the solenoid valve unit.

In order to achieve reliable clamping of the clamp unit, it can be defined that the inner surfaces of the first and second movable clamps and the inner surfaces of the first and second fixed clamps are all arc surfaces, and the arc angles of the two arc surfaces are equal .

The utility model has the following beneficial effects: after adopting the above scheme, when the control system controls the motor to be powered on, the motor drives the gear pump to rotate and starts to pressurize the hydraulic circuit, so that the hydraulic oil with a certain pressure can be changed through the two-position four-way The right channel of the valve enters the first hydraulic cylinder and the second hydraulic cylinder, pushes the pistons of the two cylinders to retract simultaneously, and drives the first movable clamp and the second movable clamp to perform a loosening movement, thereby realizing the automatic loosening operation of the workpiece. While the piston of the oil cylinder is retracted, the hydraulic oil at the rear end of the oil cylinder flows back to the hydraulic oil tank through the check valve and the two-position four-way reversing valve. When the two-position four-way reversing valve is powered on, the electromagnet pulls in and the hydraulic pipeline changes direction. The hydraulic oil with pressure enters the first hydraulic cylinder and the The second hydraulic oil cylinder pushes the pistons of the two oil cylinders to extend, and drives the first movable fixture 6 and the second movable fixture 9 to perform clamping movement, thereby realizing the automatic clamping operation of the workpiece. While the piston of the oil cylinder is retracted, the hydraulic oil at the front end of the oil cylinder flows back to the hydraulic oil tank through the two-position four-way reversing valve. This automatic clamping hydraulic device specially designed for ordinary end milling machines can clamp the workpiece for a long time during milling, thus greatly reducing the labor intensity of the operator. In addition, the device also has the characteristics of simple structure, convenient operation, fast clamping, safety and stability. The device can be directly installed on the existing ordinary end milling machine without large-scale modification of the equipment. It can not only reduce the labor intensity, but also significantly improve the production efficiency. The field trial shows that after using this device, the production efficiency can be improved. Increased by more than 30%.

Description of drawings

Fig. 1 is a schematic composition diagram of the utility model.

Fig. 2 is a front view of the clamp unit in the utility model.

Fig. 3 is a top view of the clamp unit in the present invention.

In the figure, 1-hydraulic oil tank, 2-overflow valve, 3-two-position four-way reversing valve, 4-one-way valve, 5-first hydraulic cylinder, 6-first movable fixture, 7-first fixed fixture, 8-the second hydraulic cylinder, 9-the second movable fixture, 10-the second fixed fixture, 11-the flow diversion valve, 12-the gear pump, 13-the motor.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described:

As shown in Figure 1, this type of automatic clamping hydraulic device for ordinary end milling machines includes a hydraulic pump unit composed of a hydraulic oil tank 1, a gear pump 12 and a motor 13 connected and a corresponding control system, in addition , the automatic clamping hydraulic device also includes a solenoid valve unit composed of a relief valve 2, a two-position four-way reversing valve 3, a one-way valve 4, and a flow diversion and flow collection valve 11 connected in sequence according to the requirements of the hydraulic pipeline, A hydraulic cylinder unit composed of a first hydraulic cylinder 5 and a second hydraulic cylinder 8, and a clamp unit composed of a first movable clamp 6, a second movable clamp 9, a first fixed clamp 7, and a second fixed clamp 10; The pistons in the first and second hydraulic cylinders are respectively fixedly connected to the connecting rod ends of the first and second movable clamps, and the hydraulic pump unit and the hydraulic cylinder unit are connected to each other through the solenoid valve unit.

In addition, in order to achieve a good clamping of the workpiece, it is defined that the inner surfaces of the first and second movable clamps and the inner surfaces of the first and second fixed clamps are all arc surfaces, and the arc angle of the two arc surfaces equal. 2 and 3 are a front view and a top view of the clamp unit, respectively.

The specific installation mode of the device is as follows: the hydraulic oil tank is placed near the base of an ordinary end milling machine, and the gear pump, motor, and solenoid valve system are placed on the hydraulic oil tank; the hydraulic oil cylinder system and the fixture system are fixed on the milling machine workbench; The control system is placed on the control panel of the end milling machine; the hydraulic oil tank, hydraulic pump, electromagnetic valve, and hydraulic oil cylinder are connected with oil pipes. The specifications and models of the components used in this device are as follows: The size of the hydraulic oil tank is: 1000×800×600mm; the relief valve adopts YF3 type pilot relief valve; the two-position four-way reversing valve adopts 4SE ⁶ ₁₀ D20/315 ^G24 _W220-50 type valve; check valve adopts type S10A5; oil cylinder size is Ф140×300mm; movable fixture size is 200×120×80mm, fixed fixture size is 200×120×80mm; diverter and flow valve adopts FLB10H type; gear pump The CB-B80 type is adopted; the motor adopts the Y100L-6 type motor.

The specific working process of this device is as follows: under the position shown in the figure, the motor 13 is powered on, drives the gear pump 12 to rotate, pressurizes the hydraulic circuit, uses the overflow valve 2 to set the pressure of the entire hydraulic pipeline, and makes the pipeline pressure range Between 0.5-16Mpa. The hydraulic oil with a certain pressure enters the first hydraulic cylinder 5 and the second hydraulic cylinder 8 through the right channel of the two-position four-way reversing valve 3, and pushes the pistons of the two cylinders to retract simultaneously, driving the first movable fixture 6 and the second hydraulic cylinder. The movable fixture 9 performs a loosening movement, so as to realize the automatic loosening operation of the workpiece. While the piston of the oil cylinder is retracted, the hydraulic oil at the rear end of the oil cylinder flows back to the hydraulic oil tank 1 through the check valve 4 and the two-position four-way reversing valve 3 . When the two-position four-way reversing valve 3 is powered on, the electromagnet is attracted and the hydraulic pipeline is reversed, and the hydraulic oil with pressure enters the first channel through the left channel of the two-position four-way reversing valve 3 and the diverting and collecting valve 11. 2. Two hydraulic oil cylinders push the pistons of the two oil cylinders out to drive the movable fixture for clamping movement, so as to realize the automatic clamping operation of the workpiece. While the piston of the oil cylinder is retracted, the hydraulic oil at the front end of the oil cylinder flows back to the hydraulic oil tank 1 through the two-position four-way reversing valve 3 .

Claims (2)

1. automated exchanged cutter hydraulic means that is used for common end mill, comprise one by hydraulic oil container (1), gear pump (12) and motor (13) connect hydraulic pump unit and the corresponding control system that the back constitutes, it is characterized in that: described automated exchanged cutter hydraulic means also comprises one by overflow valve (2), two-position four way change valve (3), the electromagnetic valve unit that check valve (4) and flow divider-combiner (11) constitute after requiring to be linked in sequence according to fluid pressure line, one by first, two hydraulic jacks (5,8) the hydraulic jack unit of Gou Chenging, and one by first, two floating holders (6,9) and first, two stationary fixtures (7,10) fixture unit of Gou Chenging; Piston in described first and second hydraulic jack (5,8) respectively with connections that fix of the connecting-rod head of first and second floating holder (6,9), be communicated with by described electromagnetic valve unit realization fluid pressure line between described hydraulic pump unit and the hydraulic jack unit.

2. a kind of automated exchanged cutter hydraulic means that is used for common end mill according to claim 1, it is characterized in that: described first and second floating holder (6, the medial surface of medial surface 9) and described first and second stationary fixture (7,10) is arc surface, and the radian of two arc surfaces equates.

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