Adjustable bending die head, bending die, use method and processing method

Abstract

The present invention discloses an adjustable bending die head, bending mold, use method and processing method, which belong to the field of mechanical manufacturing. The bending die head of the present invention comprises: a support frame, a servo motor arranged above the support frame, a ball screw pair connected to the output end of the servo motor, an adjustment block arranged on the nut of the ball screw pair, and a guide rod arranged on the side of the support frame, wherein the adjustment block is provided with a guide sleeve, and the guide sleeve is slidably mounted on the guide rod. The guiding accuracy of the adjustment block is improved by the sliding cooperation between the guide sleeve and the guide rod. A cushion block and a module are arranged at the lower end of the adjustment block to avoid the wear of the adjustment block during production, thereby reducing the replacement frequency of the adjustment block and saving time and labor. The use method of the present invention can accurately adjust the die head with high adjustment accuracy; the processing method of the present invention can process the key components of the die head, and the processed parts have high accuracy, thereby improving the accuracy of the die head and the mold.

Description

Technical Field

[0001] The invention belongs to the field of mechanical manufacturing, and in particular relates to an adjustable bending die head, a bending mold, a use method and a processing method. Background Art

[0002] Profile bending machines are the most advanced profile forming equipment in the 21st century. They are widely used in automobiles, elevators, petroleum, chemicals, steel structures, machinery manufacturing and other industries. At present, the principle of profile bending machines is usually to apply pressure perpendicular to the bending direction of the material above the object, so that the material is deformed. A major component of a profile bending machine is the bending die. Usually, traditional bending dies are fixed in form and can only bend a single product. They cannot be adjusted according to the shape of the product before processing, nor can they process products at multiple angles. The limitations are too great. When producing products of different shapes, the mold needs to be replaced, which greatly increases the cost of the enterprise.

[0003] In order to solve the above problems, many adjustable bending dies are provided in the prior art. For example, application numbers: 201821973166.1, 201811426441.2 and 201910832455.2 all disclose a bending machine, the bending die of the bending machine includes a plurality of bending die heads, the bending die heads are connected to a ball screw pair by a servo motor for transmission, so that the adjustment block can move up and down, and the plurality of bending die heads are arranged in sequence. By adjusting each adjustment block, the lower ends of the plurality of adjustment blocks can form bending curves of different shapes, so that products of different shapes can be pressed. However, in the prior art, during the movement of the adjustment block, the limit block set on the adjustment block is limited to the strip-shaped behavior hole of the side plate for guiding and limiting. During the transmission process of the ball screw pair, if the component set on the nut is not guided and limited, the nut will rotate with the screw instead of moving linearly along the screw. Therefore, if the width of the bar-shaped limit hole is larger than the width of the positioning block, the positioning block will rotate slightly during the transmission process, resulting in low precision of the guide positioning, which affects the processing quality of the product. In order to improve the precision of the guide positioning, the width of the positioning block needs to be close to the width of the bar-shaped limit hole in order to perform more accurate guide positioning. Therefore, higher requirements are placed on the processing precision of the positioning block and the limit hole, thereby increasing the processing cost. In addition, in the prior art, during the bending process of the product, the lower end of the adjustment block is in direct contact with the product, that is, the lower end of the adjustment block plays the role of a module. When used for a long time, the lower end of the adjustment block will cause greater wear, and it is very troublesome to replace the adjustment block, which is time-consuming and labor-intensive, and reduces production efficiency. Summary of the invention

[0004] Technical problem: The present invention provides an adjustable bending die head, bending mold, use method and processing method. The die head and mold of the present invention have high guiding precision, are not easy to cause wear on the lower end of the adjustment block, and do not need to frequently replace the adjustment block; at the same time, the use method of the present invention has high adjustment precision, and the processing method of the present invention can improve the processing precision of key components, thereby improving the processing precision of the die head and mold.

[0005] Technical solution: The adjustable bending die head of the present invention includes: a support frame, a servo motor arranged above the support frame, a ball screw pair connected to the output end of the servo motor, an adjustment block arranged on the nut of the ball screw pair, and a guide rod arranged on the side of the support frame, the adjustment block is provided with a guide sleeve, and the guide sleeve is slidably installed on the guide rod.

[0006] Furthermore, the support frame includes a top plate and two side plates arranged parallel to the lower side of the top plate, the adjustment block is located between the two side plates, the guide rod is arranged on the outer side of the side plate, the side plate is provided with a guide groove, and the guide sleeve passes through the guide groove and is slidably installed on the guide rod.

[0007] Furthermore, the guide rod is installed on the outer side of the side plate through an upper guide rod support and a lower guide rod support, the upper end of the guide rod is connected to the upper guide rod support, and the lower end of the guide rod is connected to the lower guide rod support.

[0008] Furthermore, a guide hole is formed on the guide sleeve, and the guide rod passes through the guide hole, so that the guide sleeve is slidably mounted on the guide rod.

[0009] Furthermore, a locking screw for locking the guide rod is provided on the guide rod lower support, and the guide rod lower support is detachably connected to the side plate.

[0010] Furthermore, a cushion block and a module are sequentially arranged at the lower end of the adjustment block, and both the cushion block and the module are detachably installed.

[0011] Furthermore, the servo motor is installed above the support frame through a motor seat, a motor positioning hole is opened on the motor seat, and the output end of the servo motor passes through the motor positioning hole. When the motor seat is installed on the support frame, the coaxiality of the motor positioning hole and the screw of the ball screw pair is less than or equal to 0.03mm.

[0012] Furthermore, the output end of the servo motor is connected to the ball screw pair through a coupling.

[0013] Furthermore, the cross section of the guide rod is circular.

[0014] The adjustable bending die of the present invention comprises: a plurality of bending die heads arranged in sequence.

[0015] The method for using the bending die of the present invention comprises:

[0016] (1) How to use a single bending die head

[0017] The servo control system gives the servo motor control command, and the servo motor transmits power to the ball screw pair through the coupling. The ball screw pair converts the rotational motion into linear motion and transmits the power to the adjustment block, so that the adjustment block moves up and down along the screw. The adjustment block drives the cushion block and the module to move at the same time, and adjusts the module to the set position;

[0018] The adjusting block drives the guide sleeve to move, the guide sleeve slides along the guide rod, and the guide rod guides and positions the adjusting block through the guide sleeve;

[0019] (2) How to use multiple bending dies

[0020] The servo system gives different control instructions to each servo motor, and adjusts the modules of each die head to different set positions according to the usage of the single die head, so that the lower ends of all modules form the curved shape of the parts to be processed.

[0021] The processing method of the bending die head of the present invention comprises:

[0022] First, the adjustment block is rough-machined and fine-machined. After fine-machined, a 1.5mm machining allowance is reserved in the diameter direction of the nut mounting hole on the adjustment block for assembly processing;

[0023] Then the guide sleeve is rough-machined and fine-machined. After fine-machined, a 1mm machining allowance is reserved in the diameter direction of the guide hole on the adjusting block for assembly processing;

[0024] Assemble the guide sleeve onto the adjusting block and tighten it with bolts, and use the guide sleeve and the adjusting block to make positioning holes, and use the positioning pins to position the guide sleeve on the adjusting block;

[0025] Send the combination of the adjusting block and the guide sleeve into the machining center to fine-machine the nut mounting hole and the guide hole. After fine-machining, ensure that the parallelism of the axis of the nut mounting hole and the axis of the guide hole is 0.01mm, the coplanarity of the axis of the nut mounting hole and the axis of the guide hole is 0.01mm, and the symmetry of the guide hole to the nut mounting hole is 0.01mm.

[0026] Beneficial effects: Compared with the prior art, the present invention has the following advantages:

[0027] (1) The present invention realizes the guiding and positioning of the adjustment block by setting a guide rod on the side of the support frame and using a guide sleeve to slide with the guide rod. Therefore, when the adjustment block moves on the screw, the rotational freedom of the adjustment block will be strictly limited by the sliding cooperation between the guide sleeve and the guide rod, so the adjustment block will not rotate slightly during the movement, thereby effectively improving the guiding accuracy of the adjustment block during movement, thereby realizing precise adjustment of the die head. Compared with the prior art, the method of realizing guiding and positioning by cooperating with the positioning block and the limit hole has higher guiding accuracy.

[0028] (2) The present invention sequentially arranges a cushion block and a module at the lower end of the adjusting block, and both the cushion block and the module are installed in a detachable manner. During the production process of the product, the adjusting block will not be in direct contact with the material, but will bend the material into shape by directly contacting the material through the detachable module. Therefore, it is the module, not the adjusting block, that is worn. Therefore, when the module is worn, the module can be directly replaced without replacing the adjusting block, which saves time and effort, and improves production efficiency and the life of the die. In addition, the cushion block arranged between the module and the adjusting block can provide buffer protection for the adjusting block during the bending process of the material, further avoiding damage to the adjusting block, thereby reducing the replacement frequency of the adjusting block.

[0029] (3) The servo motor of the present invention is installed on the support frame through the motor seat. The motor seat is provided with a motor positioning hole. The output end of the servo motor passes through the motor positioning hole. When the motor seat is installed on the support frame, the coaxiality between the motor positioning hole and the screw of the ball screw pair is less than or equal to 0.03 mm. On the one hand, it is convenient for the accurate installation of the servo motor. On the other hand, when the servo motor drives the ball screw pair to move, the screw and the output end of the servo motor have better coaxiality, so that the die head has better precision.

[0030] (4) The method for using the bending die head of the present invention controls the operation of the servo motor through a servo system and uses a ball screw for transmission to achieve precise adjustment of the position of the adjustment block, so that the module can be accurately adjusted to the set position with high adjustment accuracy. The cooperation of the guide rod and the guide sleeve is used to guide and position the movement of the adjustment block, thereby improving the adjustment accuracy of the die head. In addition, when there are multiple adjustment types of dies, each die head can be adjusted separately, so that the module of each die head can be accurately adjusted to the set position, so that the lower ends of the multiple modules form different curve shapes, and thus parts of different shapes can be processed, realizing one die for multiple uses.

[0031] (5) The bending die processing method of the present invention first processes the key components of the die separately and then processes them in a combined manner, which not only ensures the processing accuracy of individual parts, but also ensures the combination accuracy of the parts after assembly, thereby improving the adjustment accuracy of the die, and further improving the processing accuracy of the mold, thereby improving the processing accuracy of the parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a front view of the bending die of the bending die of the present invention;

[0033] Figure 2 It is a cross-sectional view in the direction of A of the bending die of the present invention.

[0034] The figure includes: 1. support frame; 2. servo motor; 101. top plate; 102. side plate; 103. guide groove; 3. ball screw pair; 301. screw; 302. nut; 4. adjustment block; 5. guide rod; 501. guide rod upper support; 502. guide rod lower support; 6. guide sleeve; 7. spacer; 8. module; 9. motor seat; 10. coupling; 11. bearing. DETAILED DESCRIPTION

[0035] The present invention will be further described below in conjunction with the embodiments and the accompanying drawings.

[0036] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical content disclosed by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle", "inside", "outside" and so on quoted in this specification are only for the convenience of description, and are not used to limit the scope of implementation. The change or adjustment of their relative relationship should also be regarded as the scope of implementation of the present invention without substantially changing the technical content.

[0037] Combination Figure 1 As shown, the bending die of the bending machine includes a plurality of bending die heads arranged in sequence. The present invention provides an adjustable bending die head, combined with Figure 2 As shown, the adjustable bending die head of the present invention includes: a support frame 1, a servo motor 2 arranged above the support frame 1, a ball screw pair 3 connected to the output end of the servo motor 2, an adjustment block 4 arranged on the nut 302 of the ball screw pair 3, and a guide rod 5 arranged on the side of the support frame 1, and a guide sleeve 6 is arranged on the adjustment block 4, and the guide sleeve 6 is slidably installed on the guide rod 5.

[0038] It is noted that the ball screw pair 3 is a component that can convert rotational motion into linear motion, and includes a screw 301 and a nut 302, which is common knowledge for those skilled in the art. The adjustment block 4 is provided with a nut mounting hole for mounting the nut 302, so that the adjustment block 4 can be mounted on the nut 302 and move with the nut 302.

[0039] In the embodiment of the present invention, the output end of the servo motor 2 is connected to the screw 301 of the ball screw pair 3 through the coupling 10, thereby realizing the transmission of power. When the servo motor 2 drives the screw 301 of the ball screw pair 3 to rotate, due to the spiral transmission, the nut 302 of the ball screw pair 3 will move up and down on the screw 301, thereby driving the adjustment block 4 to move up and down along the screw 301, thereby realizing the adjustability of the bending die head. Through the cooperation of the guide rod 5 and the guide sleeve 6, the adjustment block 4 is guided and limited.

[0040] In a preferred embodiment of the present invention, the support frame 1 includes a top plate 101 and two side plates 102 arranged in parallel at the lower side of the top plate 101. Ignoring the processing error, the top plate 101 and the side plates 102 are vertical, and a space is formed between the two side plates 102, in which the adjustment block 4 is arranged. The guide rod 5 is arranged on the outer side of the side plate 102, that is, on the side away from the adjustment block 4. The side plate 102 is provided with a guide groove 103. When the adjustment block 4 moves along the lead screw 301, the guide sleeve 6 passes through the guide groove 103 and is slidably installed on the guide rod 5, so that the adjustment block 4 can be accurately guided and positioned when it moves.

[0041] The present invention realizes the guiding and positioning of the adjusting block 4 by setting a guide rod 5 on the side of the support frame 1 and using a guide sleeve 6 to slide with the guide rod 5. In the prior art, in order to realize the guiding and positioning of the adjusting block 4, a positioning block is set on the side of the adjusting block 4, and then a vertical strip-shaped limiting hole is opened on the side plate 102, and the positioning block is installed in the strip-shaped limiting hole. When the adjusting block 4 moves, the positioning block is limited in the strip-shaped limiting hole, which plays a role in guiding and positioning. During the transmission process of the ball screw pair 3, if the component set on the nut 302 is not guided and limited, the nut 302 will rotate with the screw 301, and will not move linearly along the screw 301. Therefore, if the width of the strip-shaped limiting hole is larger than the width of the positioning block, the positioning block will rotate slightly during the transmission process, resulting in low precision of the guiding and positioning, thereby affecting the processing precision of the equipment. In order to improve the accuracy of guiding and positioning, the width of the positioning block needs to be close to the width of the strip-shaped limiting hole, so that more accurate guiding and positioning can be performed. Therefore, higher requirements are placed on the processing accuracy of the positioning block and the limiting hole, thereby increasing the processing cost. However, the present invention uses a guide rod for guiding and positioning, and only requires the guide sleeve 6 to cooperate with the guide rod 5, so that accurate guiding and positioning can be performed, and the guiding and positioning accuracy is higher.

[0042] More specifically, in the preferred embodiment of the present invention, because the support frame 1 includes two side plates 102, correspondingly, there are two guide rods 5, and a guide sleeve 6 is provided on each side of the adjustment block 4, and each guide sleeve 6 is slidably mounted on the corresponding guide rod 5. Because two guide sleeves 6 and two guide rods 5 are provided, the accuracy of the guide positioning can be further improved.

[0043] Of course, it should be noted that in other embodiments of the present invention, only one guide sleeve 6 may be provided on the adjustment block 4, and then a guide rod 5 may be correspondingly provided on the side of the support frame 1, and the guide sleeve 6 and the guide rod 5 may cooperate to achieve the guiding and limiting of the adjustment block 4.

[0044] In order to more conveniently install the guide rod 5, an upper guide rod support 501 and a lower guide rod support 502 for installing the guide rod 5 are provided on the outer side of the side plate 102. Specifically, the upper guide rod support 501 is located on the upper side of the guide groove 103, and the lower guide rod support 502 is located on the lower side of the guide groove 103. Therefore, when the guide rod 5 is installed on the outer side of the side plate 102 through the upper guide rod support 501 and the lower guide rod support 502, the upper end of the guide rod 5 is connected to the upper guide rod support 501, and the lower end of the guide rod 5 is connected to the lower guide rod support 502. When the guide rod 5 is installed, the axis of the guide rod 5 has a good degree of parallelism with the axis of the lead screw 301, so as to avoid the blocking phenomenon when the guide sleeve 6 moves on the guide rod 5, thereby reducing friction.

[0045] In order to enable the guide sleeve 6 to be slidably mounted on the guide rod 5 , in the embodiment of the present invention, a guide hole is opened on the guide sleeve 6 , and the guide rod 5 passes through the guide hole, so that the guide sleeve 6 is slidably mounted on the guide rod 5 .

[0046] Further, in the embodiment of the present invention, the guide rod lower support 502 is detachably connected to the side plate 102, so as to facilitate the installation of the guide rod 5. The guide rod upper support 501 and the side plate 102 can be detachably connected or non-detachably connected, and in the implementation of the present invention, the guide rod upper support 501 is provided with a mounting hole, and the guide rod 5 can be directly inserted from the mounting hole, and then the guide rod lower support 502 is provided with a locking screw, and when the position of the guide rod 5 is adjusted, it is locked by the locking screw. Through this structure, the installation of the guide rod 5 is facilitated.

[0047] Further, the lower end of the adjusting block 4 of the present invention is provided with a cushion block 7 and a module 8 in sequence, and is installed in a detachable manner. In the prior art, the module 8 is a part that contacts the pressurized material, while in the prior art, the lower end of the adjusting block 4 is directly in contact with the pressurized profile, or the adjusting block 4 directly applies pressure to the material to form the material. However, in this way, after the mold is used for a long time, the lower end of the adjusting block 4 will be severely worn and cannot be used. However, it will be very troublesome to replace the adjusting block 4. In the present invention, the cushion block 7 and the module 8 are provided in sequence at the lower end of the adjusting block 4. When the module 8 is worn, the module 8 can be directly replaced without replacing the adjusting block 4. The role of setting the cushion block 7 between the adjusting block 4 and the module 8 is to provide a certain buffer, thereby further avoiding damage to the adjusting block 4, thereby increasing the life of the die head and reducing the replacement frequency of the adjusting block 4. When it is necessary to process profiles of different shapes, modules 8 of different shapes can be installed according to demand, thereby improving the versatility of the mold.

[0048] Furthermore, the servo motor 2 is installed above the top plate 101 of the support frame 1 through the motor seat 9. The motor seat 9 is provided with a motor positioning hole, and the output end of the servo motor 2 passes through the motor positioning hole. When the motor seat 9 is installed on the support frame 1, the coaxiality between the motor positioning hole and the screw 301 of the ball screw pair 3 is less than or equal to 0.03 mm. In a preferred embodiment of the present invention, the coaxiality between the motor positioning hole and the screw 301 of the ball screw pair 3 is 0.02 mm. On the one hand, it is convenient for the accurate installation of the servo motor 2. On the other hand, when the servo motor 2 drives the ball screw pair 3 to move, the screw 301 and the output end of the servo motor 2 have better coaxiality, so that the die head has better precision.

[0049] Furthermore, a bearing hole is opened on the top plate 101 of the support frame 1 , a bearing 11 is installed in the bearing hole, and the screw 301 of the ball screw pair 3 is installed in the bearing 11 .

[0050] In the embodiment of the present invention, the cross section of the guide rod 5 is circular, so the guide rod is a cylindrical structure. At this time, the guide hole is also circular, and the guide accuracy is guaranteed through the shaft hole matching, and it is more convenient to process.

[0051] The preferred structure of the bending mold head of the present invention is specifically assembled as follows: first install the ball screw pair 3 on the adjustment block 4, then place the adjustment block 4 in the support frame 1, and pass two guide sleeves 6 through the two sides of the adjustment block 4 of the support frame 1; each guide sleeve 6 is inserted into a guide rod 5. Install the guide rod upper support 501, and insert the upper end of the guide rod 5 into the mounting hole of the guide rod upper support 501, install the guide rod lower support 502, and by adjusting the guide rod lower support 502, ensure that the adjustment block 4 and the guide sleeve 6 can move up and down on the guide rod 5 freely without obstruction, and then lock the guide rod 5 by the locking bolt. Install the cushion block 7 and the module 8 on the adjustment block 4 in turn. Put the bearing 11 on the screw 301, so as to install the ball screw pair 3 on the support frame 1, and rotate the screw 301 to ensure that the adjustment block 4 can move freely. Install the coupling 10 on the upper end of the ball screw pair 3, and lock the coupling 10 to the upper end of the ball screw pair 3 with bolts, install the motor seat 9, calibrate the motor positioning hole on the motor seat 9, and require the coaxiality of the motor positioning hole and the screw 301 of the ball screw pair 3 to be 0.02mm; install the servo motor 2, and lock the output end of the servo motor 2 and the coupling 10 with bolts.

[0052] Further, such as Figure 1 As shown, an adjustable bending die of the present invention comprises: a plurality of bending die heads of the present invention arranged in sequence, usually 20-60. When the preferred structure of the present invention is adopted, the support frame 1 of the bending die heads is processed into a whole, and the guide rod upper support 501 on the side plate 102 on the same side of the support frame 1 of all the bending die heads is a whole, and is screwed to the support frame 1. The bending die forms different curved surfaces to meet the bending shapes of different parts by adjusting each die head up and down. This arrangement can better solve the problem that the bending die can only be used for a single product, and one die can be used for multiple purposes; at the same time, it reduces the manufacturing cost of the die and improves the accuracy of the bent parts through precise adjustment; it eliminates the mold repair process, greatly prolongs the life of the mold, and increases the economic benefits for the enterprise.

[0053] At the same time, the present invention provides a method for using a bending die head, comprising:

[0054] (1) How to use a single bending die head

[0055] The servo control system gives a control instruction to the servo motor 2. The servo motor 2 transmits power to the ball screw pair 3 through the coupling 10. The ball screw pair 3 converts the rotational motion into linear motion and transmits the power to the adjustment block 4, so that the adjustment block 4 moves up and down along the screw 301. The adjustment block 4 drives the cushion block 7 and the module 8 to move simultaneously, and adjusts the module 8 to the set position.

[0056] The adjusting block 4 drives the guide sleeve 6 to move, and the guide sleeve 6 slides along the guide rod 5. The guide rod 5 guides and positions the adjusting block 4 through the guide sleeve 6.

[0057] (2) How to use multiple bending dies

[0058] The servo system gives different control instructions to each servo motor 2, and adjusts the modules 8 of each die head to different set positions according to the use method of the single die head, so that the lower ends of all modules 8 form the curved shape of the parts to be processed.

[0059] It is noted that the setting position is determined according to the shape of the part to be processed.

[0060] The method uses a servo control system to control the movement of the servo motor 2, and uses a ball screw pair 3 to convert the rotational motion into a linear motion, thereby realizing the up and down adjustment of the adjustment block 4, and uses the ball screw pair 3 for transmission, which has high transmission accuracy and can achieve fine adjustment, so that the position of the adjustment block 4 can be adjusted more accurately, and then the position of the module 8 can be adjusted more accurately. In addition, during the movement of the adjustment block 4, the guide rod 5 guides and positions the adjustment block 4 through the guide sleeve 6 to prevent the adjustment block 4 from twisting during the movement, thereby greatly improving the adjustment accuracy of the die head, so that the mold made using the die head has higher accuracy.

[0061] When multiple die heads are used in real time, the servo control system sends different control signals to each servo motor, thereby adjusting the modules 8 of different die heads to different positions, so that the lower ends of the multiple modules 8 form a curved shape consistent with the shape of the parts to be processed, so that one mold can be used for multiple purposes and the pressing of parts of different shapes can be achieved.

[0062] The present invention also provides a method for processing a bending die head, in which key components of the die head are processed. In order to ensure the adjustment accuracy of the die head, very high requirements are placed on the processing accuracy of the adjustment block 4 and the guide sleeve 6. Not only the processing accuracy of a single part must be ensured, but also the combined accuracy of the two parts must be ensured. For this reason, when processing the adjustment block 4 and the guide sleeve 6, a synthetic processing method is adopted, that is, the two parts are first processed separately, and then the two parts are combined and processed, and finally a higher processing accuracy is achieved. Specifically, the processing method includes:

[0063] First, the adjusting block 4 is rough-machined and fine-machined. After fine-machined, a 1.5 mm machining allowance is reserved in the diameter direction of the nut mounting hole on the adjusting block 4 for assembly processing;

[0064] Then the guide sleeve 6 is rough-machined and fine-machined. After fine-machined, a 1mm machining allowance is reserved in the diameter direction of the guide hole on the adjusting block 4 for combined machining;

[0065] Assemble the guide sleeve 6 onto the adjusting block 4 and tighten it with bolts, and use the guide sleeve 6 and the adjusting block 4 to form positioning holes, and use positioning pins to position the guide sleeve 6 on the adjusting block 4;

[0066] Send the combination of the adjusting block 4 and the guide sleeve 6 to the machining center to fine-machine the nut mounting hole and the guide hole. After fine-machined, ensure that the parallelism of the axis of the nut mounting hole and the axis of the guide hole is 0.01mm, the coplanarity of the axis of the nut mounting hole and the axis of the guide hole is 0.01mm, and the symmetry of the guide hole to the nut mounting hole is 0.01mm.

[0067] The combined processing method not only ensures the processing accuracy of a single part, but also ensures the combined accuracy of the parts after assembly, thereby improving the adjustment accuracy of the die head, and further improving the processing accuracy of the mold, thereby improving the processing accuracy of the parts. In addition, this method can complete the processing of two holes through one clamping, simplifying the clamping operation and improving efficiency.

[0068] The present invention provides an adjustable bending die head and a bending mold. The adjusting block of the bending die head has high guiding and positioning accuracy during movement. At the same time, a detachable module is provided at the lower end of the adjusting block to avoid wear of the adjusting block. Therefore, there is no need to frequently replace the adjusting block, which saves time and effort, and makes the mold have a longer service life and improves production efficiency. At the same time, the present invention provides a method for using the bending die head. By using this method, the die head and the mold can be accurately adjusted, so that parts of different shapes can be processed. In addition, the present invention also provides a method for processing key components of the bending die head. By using this method, the key components of the die head have higher processing accuracy and combined accuracy after assembly, so that the accuracy of the die head and the mold can be improved, and then the accuracy of the parts is improved.

[0069] The above embodiments are only preferred implementation modes of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and equivalent substitutions without departing from the principles of the present invention. These technical solutions after improvements and equivalent substitutions to the claims of the present invention all fall within the protection scope of the present invention.

Claims

1. A method for processing an adjustable bending die head, characterized in that: The bending die head comprises: a support frame (1), a servo motor (2) arranged above the support frame (1), a ball screw pair (3) connected to the output end of the servo motor (2), an adjustment block (4) arranged on a nut (302) of the ball screw pair (3), and a guide rod (5) arranged on a side of the support frame (1), wherein a guide sleeve (6) is arranged on the adjustment block (4), and the guide sleeve (6) is slidably mounted on the guide rod (5); The support frame (1) comprises a top plate (101) and two side plates (102) arranged parallel to the bottom side of the top plate (101); the adjustment block (4) is located between the two side plates (102); the guide rod (5) is arranged on the outside of the side plate (102); a guide groove (103) is formed on the side plate (102); and the guide sleeve (6) passes through the guide groove (103) and is slidably mounted on the guide rod (5); A cushion block (7) and a module (8) are sequentially arranged at the lower end of the adjustment block (4); The upper end of the guide rod (5) is connected to the guide rod upper support (501), and the lower end of the guide rod (5) is connected to the guide rod lower support (502); The guide rod (5) is installed on the outer side of the side plate (102) via a guide rod upper support (501) and a guide rod lower support (502); The servo motor (2) is mounted on the support frame (1) via a motor seat (9); a motor positioning hole is formed on the motor seat (9); an output end of the servo motor (2) passes through the motor positioning hole; when the motor seat (9) is mounted on the support frame (1), the coaxiality between the motor positioning hole and the lead screw (301) of the ball screw pair (3) is less than or equal to 0.03 mm; The processing methods of bending die head include: First, the adjusting block (4) is subjected to rough machining and fine machining. After fine machining, a machining allowance of 1.5 mm is reserved in the diameter direction of the nut mounting hole on the adjusting block (4) for assembly machining; Then the guide sleeve (6) is subjected to rough machining and fine machining. After fine machining, a machining allowance of 1 mm is reserved in the diameter direction of the guide hole on the adjusting block (4) for assembly machining; Assemble the guide sleeve (6) onto the adjusting block (4) and tighten it with bolts, and use the guide sleeve (6) and the adjusting block (4) to form positioning holes, and use positioning pins to position the guide sleeve (6) on the adjusting block (4); The assembly of the adjusting block (4) and the guide sleeve (6) is sent to a machining center to fine-machine the nut mounting hole and the guide hole. After fine-machine, ensure that the parallelism of the axis of the nut mounting hole and the axis of the guide hole is 0.01 mm, the coplanarity of the axis of the nut mounting hole and the axis of the guide hole is 0.01 mm, and the symmetry of the guide hole to the nut mounting hole is 0.01 mm; The assembly method of the bending die head includes: First, the ball screw pair (3) is mounted on the adjusting block (4), and then the adjusting block (4) is placed in the support frame (1), and two guide sleeves (6) are arranged on both sides of the adjusting block (4) through the support frame (1); Each guide sleeve (6) is inserted into a guide rod (5); the guide rod upper support (501) is installed, and the upper end of the guide rod (5) is inserted into the installation hole of the guide rod upper support (501); the guide rod lower support (502) is installed, and then the guide rod (5) is locked by a locking bolt; Install the cushion block (7) and the module (8) on the adjustment block (4) in sequence; Put the bearing (11) onto the lead screw (301), and install the ball screw pair (3) on the support frame (1); The coupling (10) is installed on the upper end of the ball screw pair (3), and the coupling (10) is locked to the upper end of the ball screw pair (3) with bolts; Install the motor seat (9), calibrate the motor positioning hole on the motor seat (9), and require that the coaxiality between the motor positioning hole and the lead screw (301) of the ball screw pair (3) is less than or equal to 0.03 mm; Install the servo motor (2) and tighten the output end of the servo motor (2) and the coupling (10) with bolts.

2. The method for processing an adjustable bending die head according to claim 1, characterized in that: The guide sleeve (6) is provided with a guide hole, and the guide rod (5) passes through the guide hole, so that the guide sleeve (6) is slidably mounted on the guide rod (5).

3. The method for processing an adjustable bending die head according to claim 2, characterized in that: A locking screw for locking the guide rod (5) is provided on the guide rod lower support (502), and the guide rod lower support (502) is detachably connected to the side plate (102).

4. A method for processing an adjustable bending die head according to any one of claims 1 to 3, characterized in that: The cushion block (7) and the module (8) are both detachably installed.

5. The method for processing an adjustable bending die head according to claim 1, characterized in that: The output end of the servo motor (2) is connected to the ball screw pair (3) via a coupling (10).

6. The method for processing an adjustable bending die head according to claim 1, characterized in that: The cross section of the guide rod (5) is circular.

7. An adjustable bending die, characterized in that: include: A bending die head processed by the processing method of the adjustable bending die head described in any one of claims 1-6 arranged in sequence.

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