CN101224478B - Pneumatic radial impact blanking machine - Google Patents

Abstract

The invention discloses a pneumatic radial impact high-efficiency precise blanking press. The blanking press at least comprises a pneumatic radial impact blanking device and a bar stock fixing device; wherein, the pneumatic radial impact blanking mechanism adopts a cylinder piston to drive a blanking die so as to impact the bar stock; the invention has the advantages of high frequency, adjustable frequency, adjustable impact force, economy, practicability and convenience, etc. The invention can achieve the precise blanking according to the bar stocks with different materials and different dimensions.

Description

Pneumatic radial impact cutting machine

Technical field

The invention belongs to the technical field of low energy consumption, near-net and high-efficiency precision molding. It relates to a blanking machine, especially a pneumatic radial impact blanking machine. The blanking machine adopts the principle of pneumatic impact to realize the circumferential generation, expansion and fracture of fatigue cracks on bars under periodic radial loading, and finally completes Precision blanking.

Background technique

The blanking of metal bars widely exists in the preparation process of cold extrusion, die forging, metal chain pins, rolling bearing rollers, pin standard parts and shaft parts, and in these blanking processes, the amount of blanking is huge, At present, traditional shearing, sawing, high-energy cutting and other blanking methods have problems such as low material utilization rate, large blanking force, high energy consumption, low production efficiency and poor blanking section quality to varying degrees.

Contents of the invention

The object of the present invention is to provide a pneumatic impact high-efficiency precision cutting machine. The blanking machine can promote cracks to expand from the surface of the bar along the radial circumference, so it can obtain good cross-section quality, and has the advantages of wide processing range, high efficiency, and good quality.

In order to realize above-mentioned task, the present invention takes following technical solution:

A pneumatic radial impact blanking machine, including a base, on which a bar fixing device and a stand are arranged, is characterized in that:

The bar material fixing device is mainly composed of a blanking sleeve, a bar material fixing sleeve, an elastic cushion cover and a bar material fixing bracket. The bar material fixing sleeve is connected with the bar material fixing bracket through a transition fit. The elastic cushion cover is matched with the bar fixing bracket;

An impact cylinder is evenly arranged on the stand along the radial direction of the bar. The impact cylinder is equipped with a piston, and a blanking mold is installed on the piston. The working contour curve of the blanking mold adopts a cycloid;

During the blanking process, one end of the bar is installed in the inner hole of the bar fixing sleeve, and the other end is inserted into the blanking sleeve. Driven by the piston, the cutting mold is driven to continuously apply load to the bar along the radial direction of the bar, so as to complete the radial pneumatic impact blanking process of the bar.

The radial impact stroke of the blanking die can be adjusted to meet the process requirements of various diameter bars; the impact cylinder can provide impact loads with different frequencies and pressures according to the process requirements, and work in the specified order according to the process requirements.

In the pneumatic radial impact high-efficiency precision blanking machine of the present invention, when blanking, the bar is placed at the center and static, and in the plane perpendicular to the axis of the bar, seven impact cylinders are evenly arranged in the compressed air pressure adjustment system, which is highly efficient. Under the control of the advanced solenoid valve reversing system and the intelligent control system, the bar is loaded radially according to the process requirements, so that only one blanking die is in working state at a time, ensuring that the bar is only loaded in one direction. There will be no interference between the blanking molds. Reasonably distributed impact cylinders can realize uniform circumferential fatigue loading of the bar, thereby promoting the stable expansion of micro-cracks and ensuring the quality of the section. It has the advantages of high frequency, adjustable frequency, adjustable impact force, economical, practical and convenient.

Description of drawings

Figure 1 is the front view of the pneumatic radial impact punching precision blanking machine.

Fig. 2 is a side sectional view of the pneumatic radial impact precision blanking machine.

The labels in the figure represent respectively: 1. blanking sleeve, 2. elastic pad cover, 3. bar stock fixing sleeve, 4. bar stock fixing bracket, 5. cylinder, 6. piston, 7. blanking mold, 8, frame.

The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

Detailed ways

Referring to the accompanying drawings, the pneumatic radial impact blanking machine of the present invention comprises a base 9, on which a bar stock fixing device and a frame 8 are arranged, and the bar stock fixing device mainly consists of a blanking sleeve 1, a bar stock fixing sleeve 3. The elastic cushion cover 2 and the bar stock fixing bracket 4 are formed. The bar stock fixing cover 3 is connected with the bar stock support 4 through a transition fit, and one end of the blanking sleeve 1 forms a fit with the bar stock fixing bracket 4 through the elastic cushion cover 2;

7 impact cylinders 5 are evenly arranged on the frame 8 along the radial direction of the bar. The impact cylinder 5 has a piston 6, and a blanking mold 7 is installed on the piston 6. The working contour curve of the blanking mold 7 adopts a cycloid;

During the blanking process, one end of the bar is installed in the inner hole of the bar fixing sleeve 3, and the other end is inserted into the blanking sleeve 1, and one end of the blanking sleeve 1 passes through the elastic pad 3 (polyurethane pad) and the machine. The frame 8 forms a fit, and the other end is in contact with the blanking mold 7; the impact cylinder 5 performs radial impact movement on the bar under the control of the control system, and is driven by the piston 6 of the impact cylinder 5 to drive the blanking mold 7 Continuously apply load to the bar along the radial direction of the bar, so as to complete the radial pneumatic impact blanking process of the bar.

The main technical features of the blanking machine are as follows: 7 impact cylinders are loaded in a full circumferential cycle to realize single-cycle high-frequency radial load fatigue blanking; the radial impact stroke is adjusted by the blanking mold, which can process different materials and different diameters The impact cylinder can also provide impact loads of different frequencies and pressures according to the process requirements, and can work in the specified order according to the process requirements, such as 1# impact cylinder→2# impact cylinder→3# impact cylinder→4# Impact cylinder→5# impact cylinder→6# impact cylinder→7# impact cylinder→1# impact cylinder; 1# impact cylinder→3# impact cylinder→5# impact cylinder→7# impact cylinder→2# impact cylinder→4# Impact cylinder → 6# impact cylinder → 1# impact cylinder works in sequence, etc.

Each impact cylinder can work on demand through the control system according to the process requirements, for example, first press 1# impact cylinder → 3# impact cylinder → 5# impact cylinder → 7# cylinder impact sequence to repeat the work; then press 2# impact cylinder → 4# Impact cylinder → 6# impact cylinder repeats work, etc.

The bar fixing sleeve adopts a sleeve structure, which can realize the blanking of short and thick bars.

Claims (6)

1. a Pneumatic radial impact blanking machine comprises base (9), is provided with bar fixture and frame (8) on base (9), it is characterized in that:

Described bar fixture mainly is made of blanking sleeve (1), bar fixed cover (3), elasticity cushion cover (2) and bar fixed support (4), bar fixed cover (3) is connected with bar fixed support (4) by interference fits, and an end of blanking sleeve (1) forms with bar fixed support (4) by elasticity cushion cover (2) and cooperates;

Described frame (8) upper edge bar radially evenly is furnished with 7 blow cylinders (5), has piston (6) on the blow cylinder (5), and blanking mould (7) is installed on the piston (6), and the working profile curve of this blanking mould (7) adopts cycloid;

In the blanking process, bar one end is installed in the endoporus of bar fixed cover (3), an other end inserts in the blanking sleeve (1), blow cylinder (5) is done the radial impact motion by the ordered pair bar under control system control, under the drive of the piston (6) of blow cylinder (5), drive blanking mould (7) and constantly radially give the bar imposed load, thereby finish radially Pneumatic immpacting blanking process of bar along bar.

2. Pneumatic radial impact blanking machine as claimed in claim 1 is characterized in that, described blow cylinder (5) is evenly arranged in the plane of vertical bar axis.

3. Pneumatic radial impact blanking machine as claimed in claim 1 is characterized in that, the radial impact stroke of described blanking mould (7) can be regulated.

4. Pneumatic radial impact blanking machine as claimed in claim 1 is characterized in that, described blanking mould (7) adapts to the bar of various different-diameters.

5. Pneumatic radial impact blanking machine as claimed in claim 1 is characterized in that, described blow cylinder (5) can provide the shock loading of different frequency and pressure according to technological requirement.

6. Pneumatic radial impact blanking machine as claimed in claim 1 is characterized in that, described blow cylinder (5) is pressed specified order work according to technological requirement.

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