CN110918851B

CN110918851B - A air hammer for steel part forging and pressing

Info

Publication number: CN110918851B
Application number: CN201911174691.6A
Authority: CN
Inventors: 周建民; 徐赟; 王雪芬
Original assignee: Suzhou Qianyuan Machinery Parts Co ltd
Current assignee: Suzhou Qianyuan Machinery Parts Co ltd
Priority date: 2019-11-26
Filing date: 2019-11-26
Publication date: 2022-03-04
Anticipated expiration: 2039-11-26
Also published as: CN110918851A

Abstract

The invention discloses an air hammer for forging and pressing steel parts, which relates to the field of air hammers and aims to solve the problems that an operator cannot easily and accurately adjust the position of a workpiece to be processed, so that the hammerhead pounding position has deviation, the workpiece to be processed has low processing quality and is easy to discard; the processing method has the technical effects that an operator determines the position where the workpiece to be processed is to be located through the prompts of the scale groove, the auxiliary groove, the identification groove, the main irradiation lamp and the auxiliary irradiation lamp, so that the smashing position is not prone to deviation, and the abandonment rate is reduced.

Description

A air hammer for steel part forging and pressing

Technical Field

The invention relates to the technical field of air hammers, in particular to an air hammer for forging and pressing steel parts.

Background

At present, the application range of the valve is very wide, and the valve is a common device in life. A valve is a device for controlling the direction, pressure and flow rate of a fluid in a fluid system, and is a device capable of controlling the flow rate of a medium (such as a liquid, a gas or a powdery solid) in piping and equipment by stopping the flow of the medium. The valve body is a main part in the valve, and the quality of the valve body is one of main factors influencing the quality of the valve. In the production process of the valve body with the medium-high pressure specification, the valve body is processed by mainly adopting a forging method. The air hammer is a free forging device and is frequently used in small and medium-sized enterprises.

The invention patent with the prior publication number of CN106607535B discloses an electric control air hammer, which comprises a bracket, an anvil block and an air hammer head, wherein the anvil block of the air hammer and the air hammer head correspond to the anvil block are arranged on the bracket, the air hammer head is connected with the bracket through a cantilever device, the cantilever device is connected with a working cylinder, and the upper end of the bracket is provided with an electric push rod for driving the working cylinder to move and a channel for pouring antirust liquid. When the pneumatic hammer is used, a workpiece to be machined is placed on the upper surface of the anvil block, then the electric push rod drives the working cylinder to move, the hammer head of the pneumatic hammer falls down, the hammer head is hammered on the workpiece to be machined, and the workpiece to be machined is forged and pressed.

The above prior art solutions have the following drawbacks: because the workpiece to be processed needs the air hammer head to repeatedly pound and press, and the different end faces of the workpiece to be processed and the smashing and pressing positions of all the end faces have different processing requirements, for an operator, when the workpiece to be processed is overturned or moved, the position of the workpiece to be processed cannot be accurately adjusted, so that the smashing and pressing positions of the air hammer head have deviation, the forging and pressing quality of a large number of workpieces to be processed is low, and finally, the workpieces can only be discarded, and the cost is wasted.

Disclosure of Invention

The invention aims to provide an air hammer for forging and pressing steel parts, which has the advantages that the hitting and pressing position of the hammer head of the air hammer is convenient to judge, the condition that the hitting and pressing position of a workpiece to be processed is deviated is not easy to occur in the forging and pressing process, and the rejection rate of the workpiece to be processed is reduced.

The above object of the present invention is achieved by the following technical solutions: the utility model provides an air hammer for steel part forging and pressing, includes the air hammer body, be equipped with the hammer column in the air hammer body, the hammer column slides and sets up in the air hammer body, hammer column lower extreme is connected with the tup, the tup below is equipped with the anvil block, the anvil block upper surface is equipped with the scale groove of being convenient for judge tup butt position.

Through adopting above-mentioned technical scheme, among prior art or forging and pressing course at ordinary times, operating personnel determines the position of processing the work piece through work experience in the past and subjective visual judgement, and the hammer post drives the tup whereabouts afterwards, pounces and presses on processing the work piece. However, for newly-entered operators, there is no abundant processing experience, and the contact position between the hammer head and the processing workpiece can only be roughly guessed according to subjective visual judgment, which causes a large deviation. When the position of the machined workpiece is adjusted by an experienced operator or an inexperienced operator, the contact position of the hammer head and the machined workpiece is mainly judged according to subjective vision, but the operator usually overlooks the machined workpiece and the hammer head, so that judgment errors are easy to occur, and the position where the hammer head is pressed on the machined workpiece is inaccurate. The forging and pressing are processes of enabling a machined workpiece to generate plastic deformation, deviation occurs in the hammering position of the hammer head, the machined workpiece cannot restore to the original shape, and only continuous repairing can be carried out in the subsequent hammering process, so that the machined workpiece meets machining requirements. However, in the subsequent pressing process, the pressing position is still prone to be inaccurate, and when the machined workpiece is a valve component, the machining accuracy concerns key performances such as the sealing performance of the valve and the accuracy of flow control, so that the number of the machined workpieces discarded due to the deviation of pressing occurs accounts for a majority of the total discarded number of the machined workpieces. Set up the scale groove on the anvil block, no matter whether operating personnel has the working experience, when upset or removal processing work piece, judge the position of contact and the area of contact of tup with processing work piece through the scale groove of processing work piece below, compare in judging through the vision and promoted the degree of accuracy greatly, reduce the tup and pound the probability that presses the position and appear the deviation, and then reduce the abandonment rate of processing work piece, saved the cost.

The forging process of each workpiece to be machined needs dozens of times or even hundreds of times of smashing and pressing, and each surface of each workpiece to be machined needs smashing and pressing for many times, so the forging process is a relatively long process. When the position of the hammer head for smashing and pressing the machined workpiece has deviation, an operator needs to remedy the machined workpiece through multiple times of smashing and pressing. In the processing process, the smashing and pressing times of each processed workpiece are increased by several times, the processing time is prolonged, and the processing efficiency is reduced. The scale groove is convenient for operators to judge the hitting and pressing positions of the hammer head and the machined workpiece, so that the operators do not need to measure and judge whether the position of the machined workpiece is correct or not for many times when moving or overturning the machined workpiece, the accurate hitting and pressing positions also reduce the hitting and pressing times, and the machining efficiency of the machined workpiece is improved.

The scale groove is arranged on the anvil block, when an operator with less experience is introduced by a processing factory, the operator performs forging and pressing processing on the processed workpiece according to the scale line, the yield is high, the learning difficulty of forging and pressing processing is reduced, and the labor cost of the processing factory is reduced.

The invention is further configured to: the shape that the scale groove constitutes is the same with the cross sectional shape of tup, the area of the shape that the scale groove constitutes is the same with the area of the cross section of tup.

Through adopting above-mentioned technical scheme, the shape that the scale groove constitutes is the same with the shape and the area of the cross section of tup. The position and the path of the falling hammer head can be judged more intuitively by an operator. When the processing workpiece is a cube or a cuboid, the upper surface and the lower surface of the processing workpiece are completely the same and are symmetrical about a horizontal plane, an operator can accurately judge the contact position of the hammer head and the processing workpiece according to the contact position of the lower surface of the processing workpiece and the scale groove, and meanwhile, the operator can accurately judge the contact area of the hammer head and the processing workpiece through the area of the lower surface of the processing workpiece in the shape formed by the scale groove, so that the accuracy of smashing and pressing is guaranteed. When the shapes of the upper surface and the lower surface of a machined workpiece are different, the distance between the scale groove and the upper surface of the machined workpiece is shorter than the distance between the upper surface of the machined workpiece and the hammer head, and the shape formed by the scale groove is the same as the shape of the cross section of the hammer head, so that an operator can judge the hitting and pressing position of the hammer head and the machined workpiece only by performing simple space imagination, and compared with the mode that the operator judges the hitting and pressing position of the hammer head according to experience, the mode ensures that the hitting and pressing position is more accurate, reduces the probability of hitting and deviating the hammer head, and further improves the machining quality of the machined workpiece. And the shape of the scale groove is the same as the shape and the area of the cross section of the hammer head, so that the difficulty of spatial imagination of operators is reduced, the machined workpiece is more quickly moved to an accurate position, and the machining efficiency is further improved.

The invention is further configured to: the middle of the shape formed by the scale grooves is provided with a cross-shaped auxiliary groove, and the central point of the auxiliary groove and the central point of the lower surface of the hammer head are positioned on the same straight line.

Through adopting above-mentioned technical scheme, when the air hammer not used, tup and anvil block upper surface butt, the central point of tup and the central point coincidence of auxiliary tank. Because the processing workpiece has a certain volume, when the processing workpiece is positioned on the upper surface of the anvil block, a part of the scale grooves can be shielded, when an operator determines the placing position of the processing workpiece through the scale grooves, if the height of the processing workpiece is higher, the operator cannot conveniently see the position of the scale grooves on the other side of the processing workpiece, and the placing position of the processing workpiece and the position where the processing workpiece needs to be placed are prone to deviation. The auxiliary groove is in a cross shape and is positioned in the middle of the shape formed by the scale grooves, the auxiliary groove is integrally two straight lines, no matter the size of the machined workpiece is small, the auxiliary groove increases the judgment standard of an operator, and the operator can know whether the position of the machined workpiece is accurate or not by observing the scale grooves and the auxiliary groove. The two straight lines are convenient for operators to know whether the position of the processing workpiece relative to the hammer head is inclined in the horizontal direction or not, and the accuracy of the hammering position of the hammer head is ensured.

The invention is further configured to: the hammer head is detachably connected in the hammer column, and a standby head detachably connected with the hammer column is placed on one side of the air hammer body.

Through adopting above-mentioned technical scheme, the specification of reserve head and tup is different, uses tup or reserve head as the circumstances, makes the air hammer satisfy different processing demands, and the flexibility is high, and the practicality is high. According to the different shapes of the workpieces to be processed or the different processing effects to be obtained, a more appropriate hammer head or standby head is selected, so that the processing process of the workpieces to be processed is smoother, and the processing efficiency is improved. The processing difficulty of the workpiece to be processed is reduced, the processing difficulty is reduced, and the processing quality of the workpiece to be processed is easier to improve by an operator.

The invention is further configured to: and a plurality of identification grooves are formed on the outer peripheral side of the scale groove.

Through adopting above-mentioned technical scheme, the sign trench is located the periphery side in scale groove, plays the sign effect, uses reserve head processing to wait to process the work piece when operating personnel, if the specification of reserve head is bigger for the hammer head, operating personnel then judges the contact position of reserve head and processing work piece through the sign groove to decide the position of locating of processing the work piece according to the sign groove, guarantee the precision of processing the work piece, thereby improve the processingquality of processing the work piece. In addition, no matter whether the hammer head or the spare head is used for machining the workpiece to be machined, if the size of the workpiece to be machined is large, an operator can determine the position of the workpiece to be machined through the position relation between the identification groove and the scale groove, and the machining accuracy of the workpiece to be machined is guaranteed. The problem that the placing position of the workpiece to be machined is inclined due to the fact that the size of the workpiece to be machined is too large and an operator inconveniently observes the positions of the scale groove and the auxiliary groove is solved.

The invention is further configured to: the vertical side wall of the anvil block is connected with a main support frame, the upper end of the main support frame is rotatably connected with a main rotating rod, and a main irradiation lamp is hinged to the main rotating rod.

Through adopting above-mentioned technical scheme, the last swivelling joint of main tributary strut has main dwang, and articulated on the main dwang have main lamp. When the air hammer is not used, the hammer head is abutted to the anvil block, an operator adjusts the position irradiated by the main irradiation lamp according to the position of the hammer head, the main irradiation lamp irradiates any position around the upper surface of the hammer head or the center of the upper surface of the hammer head, the light irradiated by the main irradiation lamp is positioned on the upper surface of a workpiece to be processed during processing, the light is not easy to be shielded and is not limited by the size of the workpiece to be processed, the operator can observe more easily and further make a judgment, and the workpiece to be processed is moved or overturned. The operator adjusts the irradiation position of the main irradiation lamp according to the own processing habit, so that the main irradiation lamp has the function of prompting the operator. When the machining workpiece is turned over or moved, the machining workpiece is moved to the next tamping position more quickly and accurately. When the size of the workpiece to be processed is large, and an operator is not easy to judge the hammerhead and the tamping position of the workpiece to be processed through the scale groove, the auxiliary groove and the standby groove, the main irradiation lamp is used more conveniently and quickly. The main irradiation lamp is matched with the scale groove, the auxiliary groove and the standby groove, so that an operator can judge the hammerhead and the pressing position of the workpiece to be processed more easily, the probability of deviation of the pressing position of the workpiece to be processed is reduced, and the processing quality of the workpiece to be processed is ensured.

The invention is further configured to: a plurality of auxiliary supporting frames are arranged on two sides of the main supporting frame, an auxiliary rotating rod is rotatably connected to the upper end of each auxiliary supporting frame, and an auxiliary illuminating lamp is hinged to the auxiliary rotating rod.

By adopting the technical scheme, the auxiliary illuminating lamp and the main illuminating lamp are used in the same way, and the illuminating positions of the main illuminating lamp and the auxiliary illuminating lamp are adjusted before the air hammer is used. The difference lies in that the auxiliary lamps are arranged at two sides of the main lamp, and then when in irradiation, the operator selectively turns on the auxiliary lamps to form an approximate graph with the main lamp, so that the operator can easily judge the striking position of the hammer. In addition, through the different irradiation positions of the main irradiation lamp and the auxiliary irradiation lamp, an operator can judge different points, the processing precision of the processed workpiece is guaranteed, the processing quality of the processed workpiece is high, and the rejection rate is reduced.

The invention is further configured to: the anvil block is provided with a plurality of insertion grooves, and the lower ends of the main support frame and the auxiliary support frame are fixedly connected with mounting rods which are in insertion connection with the insertion grooves.

Through adopting above-mentioned technical scheme, main tributary strut and auxiliary stay are installed on the anvil through the mode of pegging graft, when operating personnel need not use main lamp or vice lamp, through with main tributary strut and auxiliary stay from the mounting groove take out can, avoid main tributary strut and auxiliary stay to hinder the processing of waiting to process the work piece. Particularly, in some cases where the workpiece to be machined needs to be placed in the special die during the forging process, two operators are required to operate simultaneously, one operator holds the special die, the other operator places the workpiece to be machined in the special die, and then the workpiece to be machined is forged. In order to improve the efficiency and prevent the interference of the actions of two operators, the two operators are usually separated by a certain distance and can stand at different sides of the anvil, and the main irradiation lamp and the auxiliary irradiation lamp can interfere with the processing of the operators, so that the main support frame and the auxiliary support frame which are detachably connected enable the flexibility of the air hammer to be higher, and the practicability to be better. In addition, the main support frame and the auxiliary support frame which are detachably connected are convenient for overhauling the main irradiation lamp and the auxiliary irradiation lamp, and the service life of the air hammer is prolonged.

The invention is further configured to: one side of the upper surface of the anvil block is fixedly connected with a lug with a triangular longitudinal section.

By adopting the technical scheme, the convex block is positioned on one side where the operator is accustomed to standing, when the operator needs to turn over the machined workpiece, the machined workpiece is pulled towards the direction close to the operator, so that the machined workpiece slides along the inclined plane of the convex block, and then the machined workpiece is turned over by the inertia of the machined workpiece, so that time and labor are saved. Because the number of times that every processing work piece need be pounded and pressed is more, and operating personnel often need remove or upset processing work piece, in addition the reason weight of processing work piece self material is great, and operating personnel need continuous work again when many, the condition that the operating personnel strength is not enough appears in the later stage easily takes place, and then reduces work efficiency, also easily makes the upset of processing work piece comparatively hard, increases operating personnel's intensity of labour. The arrangement of the convex blocks enables an operator to save more labor relatively when the workpiece is turned over, reduces labor intensity, enables the operator to retain more force, keeps the speed of turning over the workpiece, and improves work efficiency.

The invention is further configured to: the anvil block comprises a base platform, a bearing plate, a damping plate and a processing plate, wherein the bearing plate is located inside the base platform, the damping plate is located above the bearing plate and is in plug-in connection with the bearing plate, and the processing plate is located above the damping plate and is in plug-in connection with the damping plate.

Through adopting above-mentioned technical scheme, the anvil block divide into the multilayer, connects through the mode of pegging graft between every layer, when the tup pounces to the processing work piece, because the grafting connection between the multilayer, wears away the impact that the anvil block received gradually, reduces the vibrations of anvil block, protects the ground of anvil block below, avoids ground to receive the vibrations of anvil block for a long time, produces the condition that crackle or relief descend. Meanwhile, the jumping amplitude of the machined workpiece on the upper surface of the machining plate is reduced, and the machined workpiece is uniformly stressed. In addition, the total height of the anvil block is increased or reduced by adding a backing plate or a cushion block and other devices to the inserting position or detaching the bearing plate, so that the operator is in a position where force is easy to apply when the operator overturns to process a workpiece, or the operator is easier to observe the processed workpiece and the scale groove, and the accuracy of the tamping position is improved.

In conclusion, the beneficial technical effects of the invention are as follows:

1. the contact position and the contact area of the hammer head and the machined workpiece are judged through the scale groove below the machined workpiece, so that the accuracy of the hammering is greatly improved, the probability of deviation of the hammering position of the hammer head is reduced, and the rejection rate of the machined workpiece is further reduced;

2. the scale groove is convenient for operating personnel to judge the hitting and pressing positions of the hammer head and the machined workpiece, so that the position of the machined workpiece does not need to be measured and judged for many times to be correct when the machined workpiece is moved or turned over, the hitting and pressing positions are accurate, the hitting and pressing times are reduced, and the machining efficiency of the machined workpiece is improved.

Drawings

Fig. 1 is a schematic view of the overall structure of an air hammer according to an embodiment of the present invention;

FIG. 2 is an exploded view of the hammer post and hammer head of the present invention;

FIG. 3 is an enlarged view at A of FIG. 2 illustrating an embodiment of the present invention;

FIG. 4 is a schematic view of the anvil according to an embodiment of the present invention.

In the figure, 1, an air hammer body; 11. a hammer post; 110. a slot; 111. fixing grooves; 12. a hammer head; 120. a slider; 121. connecting grooves; 13. a spare head; 2. an anvil block; 21. a base table; 22. a support plate; 23. a damper plate; 230. a main supporting frame; 231. a main rotating rod; 232. a main illuminating lamp; 233. a secondary support frame; 234. an auxiliary rotating rod; 235. a sub-lamp; 24. processing a plate; 25. inserting grooves; 26. mounting a rod; 27. a bump; 3. a scale groove; 4. an auxiliary groove; 5. the slot is identified.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, the air hammer for forging and pressing steel parts disclosed by the invention comprises an air hammer body 1, wherein the air hammer body 1 comprises a motor, a crankshaft, a gear shaft, a connecting rod, a piston, a lower rotary valve, a compression cylinder, an upper rotary valve, a working cylinder, a hammer column 11 and a hammer head 12, the motor is exposed outside and provides power for the air hammer, the motor is decelerated through a belt pulley and gear two-stage deceleration mechanism to drive the crankshaft and the connecting rod to drive the piston to do vertical linear reciprocating motion in the compression cylinder, pressure air is respectively formed in the upper cavity and the lower cavity of the compression cylinder and is input into the upper cavity and the lower cavity of the working cylinder through the upper rotary valve and the lower rotary valve, the working cylinder is vertically arranged, and the working cylinder is connected with the upper end of the hammer column 11 to further drive the hammer column 11 to move up and down.

Referring to fig. 2 and 3, the lower end of the hammer post 11 is provided with a slot 110, the slot 110 is T-shaped, the upper wall of the slot 110 is provided with a fixing groove 111, and the fixing groove 111 is a threaded groove. The slot 110 is inserted with a sliding block 120, the sliding block 120 is T-shaped, the lower end of the sliding block 120 is fixedly connected with a hammer 12, and one end of the sliding block 120 is provided with a connecting groove 121 which penetrates through the upper surface and the lower surface of the sliding block 120. After the sliding block 120 is inserted into the insertion slot 110, an operator passes through the connection slot 121 through a bolt and then is in threaded connection with the fixed slot 111, so that the sliding block 120 is limited in the hammer column 11, and the hammer head 12 moves up and down along with the hammer column 11.

Referring to fig. 1, one side of the air hammer body 1 is fixedly connected with a supporting plate 22, a standby head 13 is placed on the supporting plate 22, the standby head 13 can be a cuboid, and the hammer head 12 can be a cylinder. The spare head 13 has a structure identical to that of the upper end of the hammer 12, and includes a slider 120 fixedly connected to the spare head 13, the slider 120 is T-shaped, one end of the slider 120 is provided with a connecting groove 121 extending through the upper and lower surfaces of the slider 120, and the connecting groove 121 is used for being matched with the fixing groove 111 (marked in fig. 3) to fix the spare head 13 in the hammer post 11. Because the spare head 13 and the hammer head 12 have different shapes and different areas of the lower surfaces, an operator can select one of the spare head and the hammer head according to actual conditions during machining. An anvil block 2 is arranged under the hammer head 12, the upper surface of the anvil block 2 is used for placing a workpiece to be processed, the hammer head 12 moves up and down along with the hammer column 11, the workpiece to be processed on the upper surface of the anvil block 2 is hammered and pressed, and forging and pressing are achieved.

Referring to fig. 4, the anvil block 2 includes the base frame 21, and the base frame 21 can be the hexagon platform, is equipped with the standing groove in the base frame 21, has placed bearing board 22 in the standing groove, and bearing board 22 upper surface is equipped with the bearing slot, and bearing board 22 upper end is equipped with shock attenuation board 23, and shock attenuation board 23 lower surface fixedly connected with shock attenuation inserted block, shock attenuation inserted block and bearing slot plug-in connection. The upper surface of the damping plate 23 is provided with a damping slot, the upper end of the damping plate 23 is provided with a processing plate 24, and the lower surface of the processing plate 24 is fixedly connected with a processing insert block which is connected with the damping slot in an inserting manner. The workpiece to be machined is placed on the upper surface of the machining plate 24 for machining.

Referring to fig. 4, a projection 27 is fixedly connected to one side of the upper surface of the processing plate 24, the longitudinal section of the projection 27 is triangular, the projection 27 is located on the side where an operator is accustomed to standing, when the operator needs to turn over a processed workpiece, the processed workpiece is pulled in the direction close to the operator, so that the processed workpiece slides along the inclined surface of the projection 27, and then the processed workpiece is turned over by using the inertia of the processed workpiece, thereby saving time and labor.

Referring to fig. 4, the center of the upper surface of the processing plate 24 is provided with a scale groove 3, the scale groove 3 forms a circle, and the circle formed by the scale groove 3 has the same shape and area as the circle of the cross section of the hammer head 12 (marked in fig. 1). An auxiliary groove 4 is arranged in the middle of the circle formed by the scale grooves 3, the auxiliary groove 4 is in a cross shape, and the central intersection point of the auxiliary groove 4 and the center of a hammer 12 (marked in figure 1) are positioned on the same vertical straight line. The periphery of the scale groove 3 is provided with a plurality of mark grooves 5, the mark grooves 5 are linear and extend in the direction far away from the scale groove 3. When an operator processes a processing workpiece, the position of the hammer head 12 falling is judged in advance according to the scale groove 3, the auxiliary groove 4 and the identification groove 5, and then when the processing workpiece is moved or turned over, the processing workpiece can be accurately moved to the position needing to be processed, so that the hammer head 12 is prevented from deviating the hitting position of the processing workpiece, and the processing quality of the processing workpiece is reduced.

Referring to fig. 4, a main support frame 230 and a plurality of auxiliary support frames 233 are detachably connected to the vertical side walls of the shock absorbing plate 23, and the lower ends of the main support frame 230 and the auxiliary support frames 233 are fixedly connected with mounting rods 26. The vertical side wall of the damping plate 23 is provided with a plurality of insertion grooves 25 which are inserted and connected with the mounting rods 26. The main support frame 230 is rotatably connected with a main rotating rod 231 at the upper end thereof, and the main rotating rod 231 is in threaded connection with the main support frame 230. The upper end of the main rotating rod 231 is hinged with a main illuminating lamp 232, the main illuminating lamp 232 can be a small laser lamp, and the main illuminating lamp 232 preferably emits green light. The operator adjusts the position irradiated by the main irradiation lamp 232 by rotating the main rotation lever 231 and the main irradiation lamp 232, and further, when the machined workpiece is machined, the main irradiation lamp 232 gives an indication to the operator. A plurality of auxiliary support frames 233 are arranged on two sides of the main support frame 230, an auxiliary rotating rod 234 is connected to the upper end of the auxiliary support frame 233 in a threaded manner, and the upper end of the auxiliary rotating rod 234 is hinged with an auxiliary irradiation lamp 235. The sub lamp 235 may be a small laser lamp, and the sub lamp 235 preferably emits green light. The auxiliary illuminating lamp 235 is used for matching with the main illuminating lamp 232, so that more prompts are obtained by an operator, and the position of a processed workpiece is not easy to deviate from the processing required position.

The implementation principle of the embodiment is as follows: before a workpiece to be machined is machined, an operator selects one of the hammer head 12 and the spare head 13 to be arranged at the lower end of the hammer column 11 according to the forging and pressing requirements of the workpiece to be machined. If the size of the workpiece to be machined is large, the spare head 13 having a large lower surface area is preferably selected, and if the size of the workpiece to be machined is small, the hammer head 12 is preferably selected, and since the workpiece to be machined to be forged is generally a valve part, the hammer head 12 is often used. The hammer head 12 is fixed in the hammer post 11 by a bolt. Then, the positions of the main lamps 232 and the sub lamps 235 are adjusted so that the lamps of the main lamps 232 and the sub lamps 235 are irradiated at the center or the outer peripheral side of the upper surface of the workpiece to be processed. Then the hammer column 11 drives the hammer head 12 to move up and down, and the workpiece to be processed is hammered and pressed. In the process of moving the workpiece to be processed, an operator performs prejudgment on the hitting and pressing position of the hammer head 12 according to the scale groove 3, the auxiliary groove 4, the mark groove 5 or the irradiation points of the main irradiation lamp 232 and the auxiliary irradiation lamp 235, so that when the next hitting and pressing position of the workpiece to be processed is determined, the position of the workpiece to be processed is not easy to shift, and the processing precision of the workpiece to be processed is ensured.

The operator uses the scale groove 3, the auxiliary groove 4, the identification groove 5, or the main lamp 232 and the sub lamp 235 as appropriate. When the size of the workpiece to be machined is small, the position of the workpiece to be machined hit and pressed by the hammer 12 can be judged in advance according to the scale groove 3 because an operator overlooks the workpiece to be machined. And when the workpiece to be machined is moved, judging whether the workpiece to be machined is inclined or not according to the auxiliary groove 4 or the identification groove 5. When the size of the workpiece to be processed is large, the scale groove 3, the auxiliary groove 4 and the mark groove 5 are not easy to see, and an operator can judge through the main irradiation lamp 232 and the auxiliary irradiation lamp 235. If the workpiece to be processed needs two or more operators to process the workpiece, the main support frame 230 and the auxiliary support frame 233 are detached from the damping plate 23, so that the operation of the operators is prevented from being delayed.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims

1. The utility model provides an air hammer for steel forging and pressing, includes air hammer body (1), its characterized in that: a hammer column (11) is arranged in the air hammer body (1), the hammer column (11) is arranged in the air hammer body (1) in a sliding mode, a hammer head (12) is connected to the lower end of the hammer column (11), an anvil block (2) is arranged below the hammer head (12), and a scale groove (3) which is convenient for judging the abutting position of the hammer head (12) is formed in the upper surface of the anvil block (2); the shape formed by the scale grooves (3) is the same as the cross section shape of the hammer head (12), and the area of the shape formed by the scale grooves (3) is the same as the area of the cross section of the hammer head (12); the middle of the shape formed by the scale grooves (3) is provided with a cross-shaped auxiliary groove (4), and the central point of the auxiliary groove (4) and the central point of the lower surface of the hammer head (12) are positioned on the same straight line; the hammer head (12) is detachably connected in the hammer column (11), a standby head (13) detachably connected with the hammer column (11) is placed on one side of the air hammer body (1), and the standby head (13) and the hammer head (12) are different in specification; a main support frame (230) is connected to the vertical side wall of the anvil block (2), the upper end of the main support frame (230) is rotatably connected with a main rotating rod (231), and a main irradiation lamp (232) is hinged to the main rotating rod (231); a plurality of auxiliary support frames (233) are arranged on two sides of the main support frame (230), an auxiliary rotating rod (234) is rotatably connected to the upper end of each auxiliary support frame (233), and an auxiliary illuminating lamp (235) is hinged to each auxiliary rotating rod (234); a plurality of inserting grooves (25) are formed in the anvil block (2), and the lower ends of the main support frame (230) and the auxiliary support frame (233) are fixedly connected with mounting rods (26) which are connected with the inserting grooves (25) in an inserting manner; one side of the upper surface of the anvil block (2) is fixedly connected with a lug (27) with a triangular longitudinal section; the anvil block (2) comprises a bottom table (21), a bearing plate (22), a damping plate (23) and a processing plate (24), wherein the bearing plate (22) is located inside the bottom table (21), the damping plate (23) is located above the bearing plate (22) and is in plug-in connection with the bearing plate (22), and the processing plate (24) is located above the damping plate (23) and is in plug-in connection with the damping plate (23).

2. An air hammer for forging steel parts according to claim 1, wherein: and a plurality of marking grooves (5) are formed on the outer peripheral side of the scale groove (3).