CN115283606B - Precise forming die for inner hexagon composite specification screw and forming process thereof - Google Patents

Abstract

The invention discloses a hexagon inner hexagon compound specification precision molding die and its molding process in the technical field of inner hexagon composite specification molding. The top of the bottom plate is connected with a driving mechanism for driving the synchronous transmission of the two first toothed chains; the present invention utilizes a U-shaped fixing frame, a driving mechanism, a fastening mechanism, and The mechanism, multiple groups of drill bits of different specifications and the inner hexagonal forming head cooperate with each other. In the process of the U-shaped fixing frame driving the screw to move to the left, the screw head is processed from roughly small to top to bottom. It is not possible for too many people to participate, it is convenient and fast, and the processing efficiency is significantly improved, and the waste chips are discharged in time during the processing with the chip removal mechanism to avoid the waste chips from affecting the processing.

Description

A precision forming mold for hexagonal inner composite screw and its forming process

technical field

The invention relates to the technical field of forming of hexagonal composite specifications, in particular to a precision forming mold for screws of hexagonal composite specifications and a forming process thereof.

Background technique

The existing screw head inner hexagons are all of a single specification, which will cause slippage and failure during long-term use, which will affect the use of the screw. Based on this, it is proposed to set multiple specifications on the screw head in the prior art. The inner hexagon enables the inner hexagon of the screw head to adapt to multiple different specifications, which is convenient for fastening or taking out the screw for a long time.

But the production of the inner hexagon of the existing screw head is mostly manually placing and clamping the screws one by one on the lathe, and then processing the inner hexagon of the screw head, the processing is more complicated, and the processing time is longer. Among them, there is a lack of a forming device for processing the inner hexagon of the screw head of a composite specification. If the existing processing method of processing an inner hexagon of one specification is still used, the processing speed will be slower and the processing will be more cumbersome, and the processing in the current technology cannot It is completely suitable for the processing of multiple specifications. The waste chips during the processing of multiple specifications will often have an adverse effect on the next specification. Therefore, there is an urgent need for a fully automatic, convenient and quick processing of screw heads with multiple specifications. Molds and molding equipment.

Based on this, the present invention designs a precision forming die and forming process for hexagon socket compound specification screws to solve the above-mentioned problems.

Contents of the invention

The purpose of the present invention is to provide a precision molding die for hexagon socket compound specification screws and its forming process, to solve the above-mentioned background technology, but the production of the existing hexagon socket head of the screw head is mostly manually placing and clamping the screws one by one. On the lathe, the inner hexagon of the screw head is then processed. The processing is more cumbersome, and the processing time is longer, and in the prior art, there is a lack of forming devices for processing the inner hexagon of the screw head of composite specifications. There is a processing method for processing a hexagon of one specification, the processing speed will be slower, and the processing will be more cumbersome, and the processing in the current technology cannot be fully applied to the processing of multiple specifications, and the waste chips during the processing of multiple specifications will often affect the next Unfavorable effects caused by one specification, so there is an urgent need for a molding die and molding equipment that can process multi-standard inner hexagons on the screw head fully automatically, conveniently and quickly.

In order to achieve the above object, the present invention provides the following technical solutions: a precision forming die for hexagonal socket-head compound specification screws, including a fixed bottom plate, two first tooth chains arranged in front and back are arranged on the top of the fixed bottom plate, and the top of the fixed bottom plate is connected to There is a driving mechanism for synchronously driving the two first tooth chains, and the outer surfaces between the front and rear two first tooth chains are jointly fixed and connected with U-shaped fixing frames distributed in a linear array along the edges of the first tooth chains. The inside of each of the U-shaped fixing frames is provided with a first through groove for the threaded part of the screw to pass through, and the inside of each of the U-shaped fixing frames is connected with a fastening mechanism for clamping the fixing screws, above the fixed bottom plate There are several groups of drill bits and hexagon socket forming heads of different specifications, each set of drill bits and socket socket socket forming heads is composed of a drill bit and socket socket socket forming head, and each group of drill bits is located on the right side of the socket socket socket forming head, The specifications of several drill bits and inner hexagon forming heads are lowered successively from right to left, and the bottom ends of each group of said drill bits and inner hexagon forming heads are lowered successively from right to left, and several said drill bits and inner hexagon forming heads are connected with several U The fixed brackets are equidistantly distributed at the same distance, and some of the drill bits and the inner hexagon forming heads are located directly above some of the first through grooves. The power mechanism for processing, the bottom of the fixed base plate is provided with a chip removal mechanism for discharging the waste from the screw head after the drill bit and the inner hexagon forming head are processed; The support mechanism that supports the bottom of the screw when the screw head is processed;

The power mechanism includes a first support plate, the first support plate is fixedly connected to the top of the fixed bottom plate, two first electric cylinders are fixedly connected to the inner wall of the first support plate, and the two first electric cylinders The top of the cylinder is fixedly connected with two lifting plates. There are several installation sleeves running through the inside of the lifting plate at the bottom. The top of the installation sleeve is fixedly connected with a first motor, and the first motor is fixedly connected with the top of the lifting plate, and the top of each installation sleeve located directly above the inner hexagon forming head is fixedly connected with a second electric cylinder. The second electric cylinders are all fixedly connected to the top of the lifting plate;

The chip removal mechanism includes two sets of second support plates, the two sets of second support plates are respectively located on the front and rear sides of the two first tooth chains, and each set of second support plates is composed of two second support plates The four second supporting plates are all fixedly connected to the bottom of the fixed bottom plate, and the first rotating shaft is connected to the two second supporting plates in the same group for common rotation, and the end of one of the first rotating shafts is fixedly connected There is a second motor, and the second motor is fixedly connected to the side wall of the second support plate, and a plurality of first pulleys are jointly driven and connected between the two first rotating shafts, and the plurality of first pulleys are linear The array is distributed between several drill bits and the inner hexagonal forming head, and the inner side of each of the first pulleys is provided with an electromagnetic plate, and several of the electromagnetic plates are fixedly connected to the four second support plates through two first connecting frames. on the side wall;

L-shaped fixing plates are fixedly connected to the side walls of the two second supporting plates on the front side, and the first sliding rods slidingly connected with the two L-shaped fixing plates are penetrated inside the two said first sliding plates. The inner ends of the rods are fixedly connected with a scraper, and the scraper is used to scrape off the waste adsorbed on the first pulley. and the first spring between the scraper, the top of the fixed bottom plate is fixedly installed with a collection box, the bottom of the collection box is fixedly connected with a guide plate, and the inner end of the guide plate is located below the electromagnetic plate;

The support mechanism includes two U-shaped support plates, both of which are fixedly connected to the top of the fixed bottom plate, and the horizontal parts of the two U-shaped support plates are located inside the two first tooth chains , the tops of the two U-shaped support plates are fixedly connected with a third electric cylinder, and the tops of the two third electric cylinders are jointly fixedly connected with a support base plate, and the support base plate is located directly below the first through groove;

The drive mechanism includes four first fixed plates fixedly connected to the top of the fixed bottom plate, and a first rotating rod is connected between the two first fixed plates on the same side for common rotation, and the front end of one of the first rotating rods is fixed A third motor is connected, and the third motor is fixedly connected to the side wall of the first fixed plate. Two first gears are fixedly connected to the outer surfaces of the two first rotating rods, and the two first gears on the same side The first gears are jointly connected with the first gear chain transmission;

The fastening mechanism includes two fourth electric cylinders, and the two fourth electric cylinders are respectively fixedly connected to the inner front and rear side walls of the U-shaped fixed frame, and the inner ends of the two fourth electric cylinders are fixedly connected to each other. There are arc-shaped clamping plates, two of which are used to clamp the bottom threaded part of the screw;

An inner hexagon composite specification precision molding process, the specific steps of the process are:

Step 1: Place the screws that need to be processed with multi-standard hexagon sockets in the first slot of the U-shaped bracket that moves to the horizontal part, and the head of the screw contacts the top of the U-shaped bracket under the action of gravity;

Step 2: Start the fastening mechanism to fasten the bottom of the placed screw;

Step 3: Start the driving mechanism, drive the two first tooth chains to drive synchronously, and the two first tooth chains drive the U-shaped fixing bracket and the screw to move to the left;

Step 4: When the screw moves to the bottom of the rightmost drill bit, close the drive mechanism, open the support mechanism, and the support mechanism moves to the bottom of the screw to support the bottom of the screw;

Step 5: At the same time, start the power mechanism, and the power mechanism drives a number of staggered drill bits and inner hexagon forming heads to move downwards, first use the drill bits to drill holes, and then use the inner hexagon forming heads to process the inner hexagons of the drill bits. The head of the screw is processed into an inner hexagon with decreasing specifications from top to bottom;

Step 6: After each drilling of the drill bit and processing of the screw by the inner hexagonal forming head, the chip removal mechanism absorbs and discharges the waste chips on the screw head during the movement of the screw;

Step 7: After the processing is completed, open the fastening mechanism, and the screws will be automatically discharged when the U-shaped fixing frame is turned over, and the processing is completed.

Compared with prior art, the beneficial effect of the present invention is:

1. In the process of processing the multi-standard inner hexagon of the screw head each time, the present invention utilizes the U-shaped fixing frame, the driving mechanism, the fastening mechanism, multiple groups of drill bits of different specifications and the inner hexagon forming head to cooperate with each other, In the process of the U-shaped fixing frame driving the screw to move to the left, the screw head is processed from roughly small to top to bottom with multiple specifications of hexagon sockets, which can not involve too many people. It is convenient and fast, and the processing efficiency is significantly improved. During the process of processing, the chip removal mechanism discharges the waste chips in time to avoid the waste chips from affecting the processing.

2. In the present invention, through the first wheel belt provided between the drill bit and the inner hexagonal forming head, the second motor that has been started drives the second motor when the screw continues to move to the left after being processed by the drill bit or the inner hexagonal forming head. The first rotating shaft continues to rotate, and the first rotating shaft drives the first pulley to continuously drive. When the screw moves to the bottom of the first pulley and the electromagnetic plate, the electromagnetic plate absorbs the waste and makes the waste rest on the bottom of the first pulley. The one-wheel belt continuously drives to the front side, driving the waste to move forward, so as to discharge the waste left on the head of the screw in time. The non-stop driving of the first belt can avoid the influence of more waste debris absorbed by the same position of the electromagnetic plate. The appearance of its adsorption effect ensures that the waste chips on the screw head can be completely adsorbed and discharged every time, which is conducive to the processing of multi-standard inner hexagons on the screw head.

Description of drawings

Fig. 1 is a molding process flow chart of the present invention;

Fig. 2 is the first perspective view of the overall structure of the present invention;

Fig. 3 is the second perspective view of the overall structure of the present invention;

Fig. 4 is the third perspective view of the overall structure of the present invention;

Fig. 5 is some groups of drill bits of the present invention, inner hexagon forming head and power mechanism structural representation;

Fig. 6 is a schematic diagram of the position of several U-shaped fixing frames and Joao's first tire of the present invention;

Figure 7 is an enlarged view of the structure at A in Figure 6;

Fig. 8 is the right side view of the present invention (hiding the drill bit and the inner hexagon forming head of the power mechanism on the rear side and the top);

Fig. 9 is a structural schematic diagram of several sets of U-shaped fixing frames, the first toothed chain and the supporting mechanism of the present invention;

Fig. 10 is a structural schematic diagram of the chip removal mechanism of the present invention.

In the accompanying drawings, the list of parts represented by each label is as follows:

Fixed bottom plate 1, first tooth chain 2, U-shaped fixed frame 3, first through groove 4, drill bit 5, inner hexagon forming head 6, first support plate 7, first electric cylinder 8, lifting plate 9, installation sleeve 10 , the first motor 11, the second electric cylinder 12, the second support plate 13, the first rotating shaft 14, the second motor 15, the first wheel belt 16, the electromagnetic plate 17, the first connecting frame 18, the L-shaped fixed plate 19, First slide bar 20, scraper 21, first spring 22, collection box 23, guide plate 24, U-shaped support plate 25, third electric cylinder 26, support base plate 27, first fixed plate 28, first rotating rod 29 , The third motor 30, the first gear 31, the fourth electric cylinder 32, the arc clamping plate 33.

Detailed ways

Please refer to Figures 1-10, the present invention provides a technical solution: a precision forming mold for hexagonal socket compound specification screws, including a fixed bottom plate 1, and two first tooth chains 2 arranged front and back are arranged on the top of the fixed bottom plate 1, and the fixed bottom plate 1. The top is connected with a driving mechanism for synchronous transmission of the two first toothed chains 2, and the outer surface between the front and rear two first toothed chains 2 is jointly fixedly connected with a U-shaped distribution along the edge of the first toothed chain 2 in a linear array. Fixing frame 3, each U-shaped fixing frame 3 interiors are all provided with the first through groove 4 for the threaded part of the screw to pass through, and each U-shaped fixing frame 3 inside is connected with a fastening mechanism for clamping the fixing screws, fixing There are several groups of drill bits 5 and inner hexagon forming heads 6 of different specifications arranged above the bottom plate 1, and each set of drill bits 5 and inner hexagon forming heads 6 is composed of a drill bit 5 and an inner hexagon forming head 6, and each set of drill bits 5 is located at the inner hexagon On the right side of the forming head 6, several drill bits 5 and inner hexagonal forming heads 6 are lowered in turn from right to left, and the bottom ends of each group of drill bits 5 and inner hexagonal forming heads 6 are lowered successively from right to left, and several drill bits 5 and inner hexagonal forming heads 6 are lowered successively from right to left. The hexagonal forming head 6 is equidistantly distributed with some U-shaped fixing frames 3. Several drill bits 5 and inner hexagonal forming heads 6 are located directly above some first through grooves 4. The top of the fixed base plate 1 is connected with a number of drill bits 5 and The inner hexagonal forming head 6 is a power mechanism for processing the screw head. The bottom of the fixed base plate 1 is provided with a chip removal mechanism for discharging the waste from the screw head after the drill bit 5 and the inner hexagonal forming head 6 are processed. The top of the fixed base plate 1 is connected to There is a support mechanism for supporting the bottom of the screw when the drill bit 5 and the hexagon socket head 6 process the screw head;

When the molding die is working, the screws that need to be processed with multi-standard inner hexagons are placed in the first through groove 4 of the U-shaped fixing frame 3 that moves to the horizontal part. The top contacts, and then, start the fastening mechanism to fasten the bottom of the placed screw to prevent the screw from rotating and moving up and down during subsequent processing, and then start the driving mechanism to drive the two first tooth chains 2 to drive synchronously, and the two second tooth chains 2 A tooth chain 2 drives the U-shaped fixing frame 3 and the screw to move to the left. When the screw moves to the right bottom of the rightmost drill bit 5, the drive mechanism is closed, the support mechanism is opened, the support mechanism moves to the bottom of the screw, and the bottom of the screw is fixed. Support, at the same time, start the power mechanism, the power mechanism drives a number of staggered drill bits 5 and inner hexagon forming heads 6 to move downward, each set of drill bits 5 and inner hexagon forming heads 6 decreases in size from right to left, and when the screw moves to the left During the moving process, the large-sized drill bit 5 and the inner hexagonal forming head 6 first process the top of the screw, both of which use the drill bit 5 to drill holes first, and then use the inner hexagonal forming head 6 to process the inner hexagon at the position of the drill bit 5 , the bottom ends of each set of drill bits 5 and inner hexagon forming heads 6 are lowered from right to left, so that the screw heads are processed into inner hexagons with lower specifications from top to bottom, thereby automatically completing the processing of multi-standard inner hexagons. The efficiency is high, and after drilling 5 holes with the drill bit and 6 pairs of screws with the inner hexagonal forming head each time, the chip removal mechanism absorbs and discharges the waste chips at the screw head during the screw moving process, so as to avoid residual waste after each processing. Chips affect processing. After one processing is completed, the power mechanism drives several drill bits 5 and inner hexagon forming heads 6 to rise and reset, and the support mechanism at the bottom resets synchronously. Then, start the drive mechanism again to drive the U-shaped fixing frame 3 and the screw to the left Move to the next position for processing, and repeat the above steps, so that the screw head is automatically processed into multi-standard inner hexagons, which is convenient and quick. After the processing is completed, the fastening mechanism is opened, and the screw is automatically discharged when the U-shaped fixing frame 3 is turned over. It is convenient and quick to complete the processing, so that in the process of processing the multi-standard inner hexagon of the screw head each time, the U-shaped fixing frame 3, the driving mechanism, the fastening mechanism, multiple sets of drill bits 5 of different specifications and the inner hexagon The forming heads 6 cooperate with each other. When the U-shaped fixing frame 3 drives the screw to move to the left, the screw head is processed from roughly small to top to bottom with multiple specifications of inner hexagons. It is convenient and quick to prevent too many people from participating. The processing efficiency is significantly improved, and the chip removal mechanism is used to discharge the waste chips in time during the processing process to avoid the waste chips from affecting the processing.

As a further solution of the present invention, the power mechanism includes a first support plate 7, the first support plate 7 is fixedly connected to the top of the fixed bottom plate 1, two first electric cylinders 8 are fixedly connected to the inner wall of the first support plate 7, and the two first electric cylinders 8 are fixedly connected to each other. The top of the first electric cylinder 8 is jointly fixedly connected with two lifting plates 9, the inside of the bottom lifting plate 9 runs through a number of installation sleeves 10, and the drill bit 5 and the inner hexagon forming head 6 are all installed on the bottom of the installation sleeve 10, each located at the bottom of the installation sleeve 10. The top of the mounting sleeve 10 directly above the drill bit 5 is fixedly connected with a first motor 11, and the first motor 11 is fixedly connected to the top of the lifting plate 9, and the top of each mounting sleeve 10 directly above the inner hexagon forming head 6 is fixedly connected with a The second electric cylinder 12, some second electric cylinders 12 are all fixedly connected on the top of lifting plate 9; The head is processed by starting the two first electric cylinders 8 after the screw moves to the directly below the drill bit 5 or the inner hexagon forming head 6, driving two lifting plates 9 and several installation sleeves 10, the drill bit 5, and the inner hexagon forming The head 6 moves downward synchronously, simultaneously starts some second electric cylinders 12 and the second motor 15, and the second motor 15 drives some mounting sleeves 10 and the drill bit 5 to rotate rapidly, and during the downward movement of the drill bit 5, the screw head Drilling, the second electric cylinder 12 drives the mounting sleeve 10 and the inner hexagonal forming head 6 to vibrate up and down, and the inner hexagonal processing is performed on the screw head after drilling, which is convenient and quick, and processes multiple screws simultaneously, and the processing efficiency is relatively high. High, after the processing is completed, there is a mechanism to reset.

As a further solution of the present invention, the chip removal mechanism includes two sets of second support plates 13, the two sets of second support plates 13 are respectively located on the front and rear sides of the two first toothed chains 2, and each set of second support plates 13 is composed of two sets of second support plates 13. The four second support plates 13 are all fixedly connected to the bottom of the fixed bottom plate 1, and the two second support plates 13 in the same group are jointly rotatably connected with a first rotating shaft 14, one of which is the first rotating shaft. The end of 14 is fixedly connected with a second motor 15, and the second motor 15 is fixedly connected on the side wall of the second support plate 13, and a plurality of first pulley belts 16 are connected by common transmission between the two first rotating shafts 14. The tires 16 are distributed in a linear array between some drill bits 5 and the inner hexagonal forming heads 6, and the inside of each first tire 16 is provided with an electromagnetic plate 17, and several electromagnetic plates 17 are fixedly connected by two first connecting frames 18. On the side walls of the four second support plates 13; during work, after the screw is processed through the drill bit 5 and the inner hexagonal forming head 6, waste chips will remain in the inner hole position, which will affect the next drill bit 5 and the inner hexagonal forming head 6. Continue to process the screw head, through the first belt 16 set between the drill bit 5 and the inner hexagonal forming head 6, after the screw is processed by the drill bit 5 or the inner hexagonal forming head 6, continue to move to the left Among them, the second motor 15 that has been started drives the first rotating shaft 14 to continuously rotate, and the first rotating shaft 14 drives the first wheel belt 16 to continuously drive. When the screw moves to the bottom of the first wheel belt 16 and the electromagnetic plate 17, the electromagnetic plate 17 will The scraps are absorbed, so that the scraps lean against the bottom of the first wheel belt 16, and the first wheel belt 16 continues to drive to the front side, driving the scraps to move forward, so that the scraps left on the screw head are discharged in time, and the transmission is continuous The first wheel belt 16 can avoid the phenomenon that the same position of the electromagnetic plate 17 absorbs more waste and affects its adsorption effect, and ensures that the waste on the screw head can be completely adsorbed and discharged every time, which is beneficial to the screw head. Perform multi-standard inner hexagon processing.

As a further solution of the present invention, L-shaped fixing plates 19 are fixedly connected to the side walls of the two second supporting plates 13 on the front side, and the first sliding rods 20 slidingly connected to the two L-shaped fixing plates 19 run through the inside, The inner ends of the two first sliding rods 20 are fixedly connected with a scraper 21. The scraper 21 is used to scrape off the waste particles adsorbed on the first wheel belt 16. The outer surfaces of the two first sliding rods 20 are sheathed There is a first spring 22 located between the L-shaped fixed plate 19 and the scraper 21, a collection box 23 is fixedly installed on the top of the fixed bottom plate 1, and a guide plate 24 is fixedly connected to the bottom of the collection box 23, and the inner end of the guide plate 24 is located on the electromagnetic plate 17. during work, because when the first wheel belt 16 drives the waste chips to move forward, after the waste chips break away from the adsorption at the bottom of the electromagnetic plate 17, they fall from the first wheel belt 16 and fall on the fixed base plate 1 to splash everywhere , it is not conducive to follow-up personnel to carry out waste disposal. When the first wheel belt 16 drives the waste to move forward, part of the waste will automatically fall after being absorbed by the electromagnetic plate 17, and directly fall into the collection box 23 along the guide plate 24 Part of the waste that cannot fall directly is scraped off by the scraper 21 when passing through the scraper 21, and falls into the collection box 23, thereby collecting the waste in a centralized manner and avoiding the influence of the residual waste on the surface of the first pulley 16 subsequent adsorption.

As a further solution of the present invention, the support mechanism includes two U-shaped support plates 25, and the two U-shaped support plates 25 are fixedly connected to the top of the fixed bottom plate 1, and the horizontal parts of the two U-shaped support plates 25 are located on the two second On the inner side of the tooth chain 2, the tops of the two U-shaped support plates 25 are fixedly connected with the third electric cylinder 26, and the tops of the two third electric cylinders 26 are fixedly connected with the support base plate 27, and the support base plate 27 is located in the first through groove 4; when working, when the drill bit 5 and the inner hexagonal forming head 6 on the top are processing the screw head, a huge downward pressure will be generated on the screw head, so that the bottom of the screw needs to be supported to avoid The screw moves during processing. By first determining the third electric cylinder 26 when the drill bit 5 is required to process the screw head each time, the support base plate 27 is pushed to contact the bottom end of the screw to support the bottom of the screw, so as to prevent the screw from Moving downward during processing is beneficial to the processing of multi-standard inner hexagons for screws. After the processing is completed, the third electric cylinder 26 drives the support base plate 27 to reset, so as to avoid scratching the support base plate 27.

As a further solution of the present invention, the driving mechanism includes four first fixed plates 28 fixedly connected to the top of the fixed bottom plate 1, and a first rotating rod 29 is connected between the two first fixed plates 28 on the same side for common rotation, one of which is A third motor 30 is fixedly connected to the front end of a rotating rod 29, and the third motor 30 is fixedly connected to the side wall of the first fixed plate 28, and two first gears 31 are fixedly connected to the outer surfaces of the two first rotating rods 29. , the two first gears 31 on the same side are jointly connected with the first gear chain 2; when working, due to the need to stably drive some U-shaped support frames and screws to move, the third motor 30 is started to drive the first rotating rod 29 and the first gear 31 rotate, thereby stably driving two first toothed chains 2 and some U-shaped holders 3 and screws to move synchronously, which is convenient and fast.

As a further solution of the present invention, the fastening mechanism includes two fourth electric cylinders 32, and the two fourth electric cylinders 32 are respectively fixedly connected on the inner front and rear side walls of the U-shaped fixed frame 3, and the two fourth electric cylinders 32 The inner ends are all fixedly connected with arc-shaped clamping plates 33, and two arc-shaped clamping plates 33 are used to clamp the bottom threaded part of the screw; Clamp the screw to prevent the screw from rotating together. After the screw falls on the top of the U-shaped fixing frame 3, the two fourth electric cylinders 32 are synchronously activated to drive the two arc-shaped clamping plates 33 to move inward synchronously. The threaded part at the bottom of the screw is clamped to prevent the screw from rotating during processing, which is beneficial to the processing of multi-standard inner hexagons on the screw head.

An inner hexagon composite specification precision molding process, the specific steps of the process are:

Step 1: place the screws that need to be processed with multi-standard inner hexagons in the first through groove 4 of the U-shaped fixing frame 3 that moves to the horizontal part, and the head of the screw contacts the top of the U-shaped fixing frame 3 under the action of gravity;

Step 2: Start the fastening mechanism to fasten the bottom of the placed screw;

Step 3: start the drive mechanism, drive the two first toothed chains 2 to drive synchronously, and the two first toothed chains 2 drive the U-shaped fixing frame 3 and the screw to move to the left;

Step 4: When the screw moves to the bottom of the rightmost drill bit 5, close the drive mechanism, open the support mechanism, and move the support mechanism to the bottom of the screw to support the bottom of the screw;

Step 5: At the same time, start the power mechanism, and the power mechanism drives a number of staggered drill bits 5 and inner hexagonal forming heads 6 to move downwards, first use the drill bits 5 to drill holes, and then use the inner hexagonal forming heads 6 to adjust the position of the drill bits 5. Inner hexagonal processing, the screw head is processed into inner hexagonal angles with decreasing specifications from top to bottom;

Step 6: After drilling 5 holes with the drill bit and 6 pairs of screws with the inner hexagonal forming head each time, the chip removal mechanism absorbs and discharges the waste chips at the screw head during the movement of the screw;

Step 7: After the processing is completed, the fastening mechanism is opened, and the screws are automatically discharged when the U-shaped fixing frame 3 is overturned, and the processing is completed.

Claims (8)

1. Inner hexagon composite specificationScrew boltPrecision forming mould, including fixed baseplate (1), its characterized in that: the utility model discloses a drill bit forming device, including fixed baseplate (1), drill bit (5) and hexagonal forming head (6) that are located in proper order, fixed baseplate (1) top is provided with two first toothed chains (2) that arrange around being provided with, fixed baseplate (1) top is connected with the actuating mechanism who is used for driving two first toothed chains (2) synchronous drive, front and back two on the surface between first toothed chains (2) jointly fixedly connected with U type mount (3) that are linear array distribution along first toothed chain (2) edge, every U type mount (3) are inside all offered first logical groove (4) that supply screw thread part to pass, every U type mount (3) inboard all is connected with the fastening mechanism who is used for pressing from both sides tight set screw, fixed baseplate (1) top is provided with drill bit (5) and hexagonal forming head (6) of a plurality of different specifications, every drill bit (5) and hexagonal forming head (6) are constituteed by drill bit (5) and hexagonal forming head (6) in proper order, every group drill bit (5) are located the right side of hexagonal forming head (6), hexagonal forming head (6) is located a plurality of right side forming head (6) and hexagonal forming head (6) from a plurality of drill bit (5) and hexagonal forming head (6) top to the right side forming head (6) and the top is located in proper order and the order down, the screw head fixing device is characterized in that the top of the fixing base plate (1) is connected with a power mechanism for driving a plurality of drill bits (5) and inner hexagonal forming heads (6) to process screw heads, a chip removal mechanism for discharging scraps of the screw heads after the drill bits (5) and the inner hexagonal forming heads (6) are processed is arranged at the bottom of the fixing base plate (1), and a supporting mechanism for supporting the screw bottoms when the drill bits (5) and the inner hexagonal forming heads (6) process the screw heads is connected to the top of the fixing base plate (1).

2. The precise forming die for the hexagon socket compound specification screw according to claim 1, wherein: the power mechanism comprises a first supporting plate (7), the top of fixed baseplate (1) is fixedly connected with first backup pad (7), two first electric cylinders (8) are fixedly connected with on the inside wall of first backup pad (7), two the top of first electric cylinder (8) is fixedly connected with two lifter plates (9) jointly, the bottom lifter plates (9) are inside to be run through to have a plurality of installation cover (10), drill bit (5) with interior hexagonal forming head (6) all install the bottom at installation cover (10), every be located drill bit (5) directly over installation cover (10) top all fixedly connected with first motor (11), first motor (11) fixedly connected with is at the top of lifter plates (9), every be located the top of installation cover (10) just above interior hexagonal forming head (6) all fixedly connected with second electric cylinder (12), a plurality of second electric cylinder (12) all are fixedly connected with at the top of lifter plates (9).

3. The precise forming die for the hexagon socket compound specification screw according to claim 2, wherein: the chip removal mechanism comprises two groups of second supporting plates (13), the two groups of second supporting plates (13) are respectively located on the front side and the rear side of two first toothed chains (2), each group of second supporting plates (13) is composed of two second supporting plates (13), four second supporting plates (13) are fixedly connected to the bottom of a fixed bottom plate (1), first rotating shafts (14) are jointly connected between the second supporting plates (13) in a rotating mode, one of the first rotating shafts (14) is fixedly connected with a second motor (15), the second motor (15) is fixedly connected to the side wall of the second supporting plates (13), a plurality of first wheel belts (16) are connected between the first rotating shafts (14) in a transmission mode, the first wheel belts (16) are distributed between a plurality of drill bits (5) and inner hexagonal forming heads (6) in a linear array mode, a plurality of electromagnetic plates (17) are respectively arranged on the inner sides of the first wheel belts (16), and the electromagnetic plates (17) are fixedly connected to the side walls of the four second supporting plates (13) through two first connecting frames (18).

4. The precise forming die for the hexagon socket compound specification screw according to claim 3, wherein: the front side is two all fixedly connected with L type fixed plate (19) on second backup pad (13) lateral wall, two inside all running through of L type fixed plate (19) have rather than sliding connection's first slide bar (20), two the common fixedly connected with scraper blade (21) of first slide bar (20) inner, scraper blade (21) are used for scraping the sweeps of adsorbing on first wheel belt (16), two all overlap on first slide bar (20) surface and are equipped with first spring (22) that are located between L type fixed plate (19) and scraper blade (21), fixed baseplate (1) top fixed mounting has collecting box (23), collecting box (23) bottom fixedly connected with guide board (24), guide board (24) inner are located the below of electromagnetic plate (17).

5. The precise forming die for the hexagon socket compound specification screw according to claim 1, wherein: the supporting mechanism comprises two U-shaped supporting plates (25), wherein the two U-shaped supporting plates (25) are fixedly connected to the top of a fixed bottom plate (1), the two horizontal parts of the U-shaped supporting plates (25) are located on the inner sides of two first toothed chains (2), the two U-shaped supporting plates (25) are fixedly connected with third electric cylinders (26) at the top, the two supporting bottom plates (27) are fixedly connected to the top ends of the third electric cylinders (26) together, and the supporting bottom plates (27) are located under the first through grooves (4).

6. The precise forming die for the hexagon socket compound specification screw according to claim 1, wherein: the driving mechanism comprises four first fixing plates (28) fixedly connected to the top of a fixing base plate (1), a first rotating rod (29) is connected between the first fixing plates (28) in a common rotation mode, one of the first fixing plates is fixedly connected with a third motor (30) at the front end of the first rotating rod (29), the third motor (30) is fixedly connected to the side wall of the first fixing plates (28), two first gears (31) are fixedly connected to the outer surface of the first rotating rod (29), and the two first gears (31) on the same side are connected with a first toothed chain (2) in a transmission mode.

7. The precise forming die for the hexagon socket compound specification screw according to claim 1, wherein: the fastening mechanism comprises two fourth electric cylinders (32), the two fourth electric cylinders (32) are respectively and fixedly connected to the front side wall and the rear side wall of the inside of the U-shaped fixing frame (3), the inner ends of the two fourth electric cylinders (32) are fixedly connected with arc-shaped clamping plates (33), and the two arc-shaped clamping plates (33) are used for clamping bottom thread parts of screws.

8. A precision forming process of a compound specification of an inner hexagon, which is applicable to a precision forming die of a screw with compound specification of an inner hexagon according to any one of claims 1 to 7, and is characterized in that: the specific steps of the process are as follows:

step one: placing a screw which is required to be processed into multiple specifications and has a hexagon in a first through groove (4) of a U-shaped fixing frame (3) which moves to a horizontal part, wherein the screw contacts with the top of the U-shaped fixing frame (3) at the gravity action head;

step two: starting a fastening mechanism to fasten the bottom of the placed screw;

step three: starting a driving mechanism to drive two first toothed chains (2) to synchronously drive, wherein the two first toothed chains (2) drive a U-shaped fixing frame (3) and a screw to move leftwards;

step four: when the screw moves to the position right below the rightmost drill bit (5), the driving mechanism is closed, the supporting mechanism is opened, and the supporting mechanism moves to the bottom of the screw to support the bottom of the screw;

step five: simultaneously, starting a power mechanism, wherein the power mechanism drives a plurality of drill bits (5) and inner hexagonal forming heads (6) which are arranged in a staggered manner to move downwards, drilling holes by the drill bits (5), then processing inner hexagonal forming heads (6) on the positions of the drill bits (5), and processing screw heads into inner hexagonal with the specifications reduced from top to bottom in sequence;

step six: after each time the drill bit (5) drills and the hexagon socket head (6) processes the screw, the chip removing mechanism adsorbs and discharges scraps at the head of the screw in the moving process of the screw;

step seven: after the machining is finished, the fastening mechanism is opened, and the screw is automatically discharged when the U-shaped fixing frame (3) is overturned, so that the machining is finished.

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