CN114985612A - Variant punch for flaring of pipe end - Google Patents
Variant punch for flaring of pipe end Download PDFInfo
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- CN114985612A CN114985612A CN202210471744.6A CN202210471744A CN114985612A CN 114985612 A CN114985612 A CN 114985612A CN 202210471744 A CN202210471744 A CN 202210471744A CN 114985612 A CN114985612 A CN 114985612A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D41/00—Application of procedures in order to alter the diameter of tube ends
- B21D41/02—Enlarging
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/04—Movable or exchangeable mountings for tools
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Abstract
The invention provides a variant punch for flaring of the end part of a pipe, belonging to the technical field of aviation aircraft aluminum alloy sheet metal processing. The invention adopts the transmission rod with left-hand threads and right-hand threads and the transmission mechanism engaged with the gears to adjust the relative position between the punch lobes so as to form punches with different external shapes, can be used for the flaring treatment of the end parts of pipes with different section shapes, including circular, rectangular with round corners and runway-shaped sections, saves the number of the punches so as to reduce the manufacturing cost, avoids frequently replacing the punches with different specifications so as to improve the working efficiency, can be realized without a complex adjusting mechanism, and has simple structure, easy implementation and convenient use.
Description
Technical Field
The invention belongs to the technical field of pipe processing, and relates to a variant punch for flaring of an end of a pipe.
Background
When the pipes are connected, one connection mode is that after the end part of the pipe is flared, another pipe is inserted into the flared pipe, and the pipes are connected after being treated by processing modes such as welding and the like. A commonly used flaring method is to insert a corresponding flaring punch (a punch with a certain taper) into the end of the pipe, and then apply a thrust force along the axial direction of the pipe on the pipe or the flaring punch, so as to flare the pipe under the action of the flaring punch.
In addition, when the tube is hydroformed or the tube is hot-formed by air pressure, the end of the tube needs to be flared by a forming punch so as to realize sealing. When the flaring rate is high, namely the difference between the section circumference of the end part of the pipe for forming and the theoretical circumference after flaring is large, the problem that the end part of the pipe is cracked or the punch cannot enter can occur when the forming punch is directly used for flaring. Therefore, the pre-flaring treatment is often carried out on the condition of larger flaring rate, namely the end part of the pipe is expanded to a certain degree and then sealed after further flaring by using a forming punch, so that the problems that the end part is cracked and the punch cannot directly enter the end part of the pipe are solved.
The existing pipe end flaring equipment generally flares pipes with circular cross sections, and for pipes with non-circular cross sections (such as rectangular cross sections with rounded corners, runway-shaped cross sections and the like), a conical flaring punch with a corresponding shape is required to be processed to perform the pipe end flaring treatment. However, for pipes with different specifications and shapes, punches with different specifications and shapes are required during flaring, and the specification diversity of the punches can increase the manufacturing cost; different punches need to be replaced for tubular products of different specifications and shapes, so that the working efficiency is low.
In order to solve the problems that when the existing flaring punch is used for flaring pipes with different cross-sectional shapes, a plurality of sets of flaring punches need to be processed, so that the manufacturing cost is increased, and the efficiency is low when the flaring punches are frequently replaced, a variant punch which is convenient for flaring pipes with different specifications and shapes needs to be designed.
Disclosure of Invention
The invention provides a variant punch for flaring of the end part of a pipe, aiming at solving the problems that when the existing flaring punch is used for flaring pipes with different cross-sectional shapes, a plurality of sets of flaring punches need to be processed, so that the manufacturing cost is increased and the efficiency is low when the flaring punches are frequently replaced.
The technical scheme of the invention is as follows:
a variable punch for flaring the end of a pipe comprises a single-row transmission rod variable flaring punch and a double-row transmission rod variable flaring punch.
The single-row transmission rod variant flaring punch comprises four transmission rods 1-1, four punch segments 1-2, eight connecting arms 1-3, four transmission gears 1-4, four stopping cylinders 1-5, four fastening bolts 1-6, two power gears 1-7 and two power rods 1-8.
The thread on the transmission rod 1-1 is divided into two sections, one section is a left-handed thread, the other section is a right-handed thread, the thread sections are the same in length, and the threads at the two ends are arranged on the transmission rod 1-1 in a bilateral symmetry manner; the four driving rods 1-1 are arranged in a 'well' shape but are not mutually connected, four punch head petals 1-2 are respectively arranged at four cross parts of the driving rods 1-1 through threaded holes, the punch head petals 1-2 are arranged on the driving rods 1-1 in a manner of forming thread pairs, the punch head petals on the four punch head petals 1-2 face the same direction, two punch head petals 1-2 on the same driving rod are positioned on thread sections in different spiral directions, the thread specifications of the corresponding thread sections of the two driving rods 1-1 arranged in the same horizontal or vertical direction are consistent with the spiral direction, the four punch head petals 1-2 and the four driving rods 1-1 are connected into a whole, and the four punch head petals form a complete punch head.
One end of the transmission rod 1-1 is provided with a square section, a transmission gear 1-4 with a square hole at the center is inserted into the square section at the end part of the transmission rod 1-1, a cylindrical stop cylinder 1-5 with a square hole at the middle is inserted into the square section at the end part of the transmission rod 1-1 to restrict the axial movement of the transmission gear 1-4, a fastening bolt 1-6 is used for fixing the stop cylinder 1-5 at the end part of the transmission rod 1-1 to prevent the stop cylinder 1-5 from falling off, a power gear 1-7 is fixedly connected with a power rod 1-8, the power gear 1-7 is mutually meshed with two transmission gears 1-4 at the end parts of the two transmission rods 1-1 in the same direction to form a transmission mechanism, the relative positions of the transmission gears 1-4 and the power gears 1-7 are fixed through a connecting arm 1-3, two connecting arms 1-3 are respectively arranged on two sides of a transmission gear 1-4, one end of each of the two connecting arms 1-3 close to one side of the transmission rod thread is arranged on the circular section of the transmission rod 1-1, one end of each of the two connecting arms 1-3 far away from one side of the transmission rod thread is arranged on a stopping cylinder 1-5, the other ends of the four connecting arms 1-3 are respectively connected with a power rod 1-8, the connecting arms 1-3 are rotatably connected with the transmission rod 1-1, the power rods 1-8 and the stopping cylinders 1-5, and the power rods 1-8 move axially to enable power gears 1-7 and the transmission gear 1-4 to be in a non-meshed state.
The working process of the single-row transmission rod variable flaring punch comprises the following steps:
step 1, installing the punch clacks 1-2 on the transmission rod 1-1 through the thread holes and threads on the transmission rod 1-1 in a mode of forming thread pairs.
And 2, mounting the transmission gear 1-4 to the square section at the end part of the transmission rod 1-1, mounting the stopping cylinder 1-5 to the square section at the end part of the transmission rod 1-1 and fixing the stopping cylinder by the fastening bolt 1-6 to restrict the axial movement of the transmission gear 1-4, and after assembling the power gear 1-7 and the power rod 1-8, mutually meshing the power gear 1-4 and the transmission gear 1-4 through the connecting arm 1-3 to form a transmission mechanism.
And 3, rotating the power rod 1-8 to enable the power gear 1-7 to rotate, enabling the transmission gear 1-4 to rotate through meshing action, enabling the transmission gear 1-4 to drive the transmission rod 1-1 to rotate, enabling the two punch pin lobes 1-2 located in different thread sections of the same transmission rod 1-1 to move in the opposite direction or the opposite direction along the transmission rod 1-1, enabling the relative positions of the punch pin lobes 1-2 to change, enabling the punch pin lobes 1-2 to move in the vertical direction and the horizontal direction independently, and obtaining punch pins in different shapes by adjusting the relative position relationship of the punch pin lobes 1-2. When the power transmission device works, the power gear 1-7 and the transmission gear 1-4 in one direction (horizontal or vertical) are in a meshed state, and the power rod 1-8 is moved in the other direction (vertical or horizontal) to enable the power gear 1-7 and the transmission gear 1-4 to be in a non-meshed state.
And 4, placing the punch with the adjusted shape at the end part of the pipe and applying an acting force along the axial direction of the pipe to realize the flaring of the pipes with different shapes and specifications.
The double-row transmission rod variant flaring punch comprises two punch front end vertical direction transmission rods 2-1-1, two punch front end horizontal direction transmission rods 2-1-2, two punch rear end vertical direction transmission rods 2-1-3, two punch rear end horizontal direction transmission rods 2-1-4, four punch petals 2-2, sixteen connecting arms 2-3, eight transmission gears 2-4, eight stopping cylinders 2-5, eight fastening bolts 2-6, two power gears 2-7 and two power rods 2-8.
The two punch front end vertical direction transmission rods 2-1-1, the punch front end horizontal direction transmission rod 2-1-2, the punch rear end vertical direction transmission rod 2-1-3 and the punch rear end horizontal direction transmission rod 2-1-4 are respectively provided with two thread sections with the same length, one thread section is a left-handed thread and the other thread section is a right-handed thread, the two punch front end vertical direction transmission rods 2-1-1 and the two punch front end horizontal direction transmission rods 2-1-2 are arranged in a 'well' shape but are not mutually connected, the two punch rear end vertical direction transmission rods 2-1-3 and the two punch rear end horizontal direction transmission rods 2-1-4 are arranged in a 'well' shape but are not mutually connected, and the two groups of 'well' shaped transmission rods are arranged in a front-back alignment manner but are not mutually connected, the formed 8 cross points form four groups of cross positions which are aligned front and back, the four punch head petals 2-2 are respectively arranged on the four groups of cross positions through threaded holes, namely the punch head petals 2-2 are arranged on corresponding transmission rods in a thread pair forming mode through the threaded holes and left-handed threads or right-handed threads on the transmission rods, the punch head petals on the four punch head petals 2-2 face the same direction, the two punch head petals 2-2 on the same transmission rod are positioned on thread sections with different spiral directions, the thread spiral directions of the corresponding thread sections of the vertical direction transmission rod 2-1-1 at the front end of the punch head and the vertical direction transmission rod 2-1-3 at the rear end of the punch head are opposite, the thread spiral directions of the corresponding thread sections of the horizontal direction transmission rod 2-1-2 at the front end of the punch head and the horizontal direction transmission rod 2-1-4 at the rear end of the punch head are opposite, the four punch pin petals 2-2 and the eight transmission rods are connected into a whole, and the four punch pin petals 2-2 form a complete punch pin.
One end of the punch front end vertical direction transmission rod 2-1-1 is provided with a square section, a transmission gear 2-4 with a square hole in the center is inserted into the square section at the end part of the punch front end vertical direction transmission rod 2-1-1, a cylindrical stopping cylinder 2-5 with a square hole in the middle is inserted into the square section at the end part of the punch front end vertical direction transmission rod 2-1-1 to restrain the transmission gear 2-4 from moving axially, and a fastening bolt 2-6 is used for fixing the stopping cylinder 2-5 at the end part of the punch front end vertical direction transmission rod 2-1-1 to prevent the stopping cylinder 2-5 from falling off; the end parts of the horizontal transmission rod at the front end of the punch, the vertical transmission rod 2-1-3 at the rear end of the punch and the horizontal transmission rod 2-1-4 at the rear end of the punch are provided with a transmission gear 2-7, a stop cylinder 2-5 and a fastening bolt 2-6 in the same way as the vertical transmission rod 2-1-1 at the front end of the punch.
A transmission gear 2-4 at the end part of the punch front end vertical direction transmission rod 2-1-1 and the punch rear end vertical direction transmission rod 2-1-3 (or the punch front end horizontal direction transmission rod 2-1-2 and the punch rear end horizontal direction transmission rod 2-1-4) which are positioned on the same punch segment 2-2 are mutually meshed and fixed in relative positions through a connecting arm 2-3, two sides of the meshed transmission gear 2-4 are respectively provided with a connecting arm 2-3, one end of each connecting arm 2-3 is connected to the punch front end vertical direction transmission rod 2-1-1 and the punch rear end vertical direction transmission rod 2-1-3 (or the punch front end horizontal direction transmission rod 2-1-2 and the punch rear end horizontal direction transmission rod 2-1-4) circular section, the other end is connected to a stop cylinder 2-5 on the corresponding transmission rod; a power gear 2-7 is fixedly connected with a power rod 2-8, the power gear 2-7 is meshed with a transmission gear 2-4 at the end part of two horizontal transmission rods 2-1-4 at the rear ends of the punches (or two vertical transmission rods 2-1-3 at the rear ends of the punches) and is fixed at a relative position through a connecting arm 2-3, one end of the connecting arm 2-3 is connected to the power rod 2-8, the other end of the connecting arm is connected to a stop cylinder 2-5 or a circular section of the horizontal transmission rod 2-1-4 at the rear ends of the punches (or the vertical transmission rod 2-1-3 at the rear ends of the punches), and the connecting arm 2-3 is connected with a vertical transmission rod 2-1-1 at the front ends of the punches (or the horizontal transmission rod 2-1-2 at the front ends of the punches, the vertical transmission rod 2-1-3 at the rear ends of the punches, The horizontal direction transmission rod 2-1-4 at the rear end of the punch, the power rod 2-8 and the stopping cylinder 2-5 are in rotary connection, so that a transmission mechanism is formed, and the power rod 2-8 moves along the axial direction to enable the power gear 2-7 and the transmission gear 2-4 to be in a non-meshed state.
The working process of the double-row transmission rod variable flaring punch comprises the following steps:
the power rod 2-8 is rotated to rotate the power gear 2-7, the transmission gear 2-4 at the end part of the horizontal transmission rod 2-1-4 at the rear end of the punch (or the vertical transmission rod 2-1-3 at the rear end of the punch) is rotated through meshing action, so as to drive the transmission gear 2-4 at the end part of the horizontal transmission rod 2-1-2 at the front end of the punch (or the vertical transmission rod 2-1-1 at the front end of the punch) to rotate, the vertical transmission rod 2-1-1 at the front end of the punch, the horizontal transmission rod 2-1-2 at the front end of the punch, the vertical transmission rod 2-1-3 at the rear end of the punch and the horizontal transmission rod 2-1-4 at the rear end of the punch rotate, and two punch segments 2-2 located in different thread sections of the same transmission rod move oppositely or reversely, the relative position of the punch clack 2-2 is changed, and punches in different shapes are obtained by adjusting the relative position relation of the punch clack 2-2; when the power transmission device works, the power gear 2-7 and the transmission gear 2-4 in one direction (horizontal or vertical) are in a meshed state, and the power rod 2-8 is moved in the other direction to enable the power gear 2-7 and the transmission gear 2-4 to be in a non-meshed state; and placing the punch with the adjusted shape at the end part of the pipe and applying an acting force along the axial direction of the pipe to realize the flaring of the pipes with different shapes and specifications.
Further, the length l of the working section of the punch segment 1-2 1 Working section taper alpha of punch segment 1-2 1 Length l of working section of punch segment 2-2 2 Working section taper alpha of punch head valve 2-2 2 The punch pin can be processed into a plurality of specifications according to the requirements, and punch pins with different specifications are combined to meet the requirements of different application ranges.
The invention has the beneficial effects that:
(1) the variant flaring punch of the invention can be used for flaring the end of a pipe with different section shapes, including round, rectangular with round corners and 'racetrack' section.
(2) The variable flaring punch head is formed by adjusting the relative positions of the punch head flaps to form the punch head with different shapes, so that the number of the punch heads is reduced, the manufacturing cost is reduced, and the frequent replacement of the punch heads with different specifications is avoided, thereby improving the working efficiency.
(3) The invention adopts the transmission rod with the left-handed thread and the right-handed thread and the transmission mechanism meshed with the gear to adjust the relative position between the punch lobes so as to form the punches with different external shapes, can be realized without a complex adjusting mechanism, and has simple structure, easy implementation and convenient use.
Drawings
Fig. 1 is a schematic structural view of a single-row transmission rod variant flaring punch head of the invention.
Fig. 2 is a schematic view of a transmission structure of the single-row transmission rod variant flaring punch of the invention.
FIG. 3 is a schematic view of a non-meshing state of a power gear and a transmission gear in the single-row transmission rod variant flaring punch head.
Fig. 4 shows a single row transmission rod variant flaring punch with a left-handed thread and a right-handed thread.
Fig. 5 is a structural schematic diagram of the double-row transmission rod variant flaring punch head of the invention.
Fig. 6 is a schematic view of the transmission structure of the double-row transmission rod variant flaring punch of the invention.
FIG. 7 is a schematic view of the transmission structure of the double row transmission rod variant flaring punch with idler pulley.
Figure 8(a) is a punch lobe in a single row drive rod variation flare punch of the present invention.
Fig. 8(b) is a punch lobe in a dual row drive rod variation flaring punch of the present invention.
Fig. 9(a), (c), (e) are several typical tubes to which the variant flaring punch can be applied.
FIGS. 9(b), (d), and (f) are cross-sectional shapes of the pipe corresponding to FIGS. 9(a), (c), and (e).
In the figure: 1-1 transmission rod; 1-2 punch flaps; 1-3 linking arms; 1-4 transmission gears; 1-5 stopping cylinders; 1-6 fastening bolts; 1-7 power gears; 1-8 power rods; 2-1-1, a driving rod in the vertical direction at the front end of the punch; 2-1-2 horizontal transmission rods at the front ends of the punches; 2-1-3, a transmission rod is arranged at the rear end of the punch in the vertical direction; 2-1-4 horizontal transmission rods at the rear ends of the punches; 2-2 punch flaps; 2-3 connecting arms; 2-4 transmission gears; 2-5 of a stop cylinder; 2-6 fastening bolts; 2-7 power gears; 2-8 power rods; 2-9 connecting pins; 2-10 idler pulleys; 11 adopting a pipe after flaring by adopting a variant punch; l, the length of the working section of the punch head; taper of the working section of the alpha punch flap.
Detailed Description
The following further describes a specific embodiment of the present invention with reference to the drawings and technical solutions.
Example 1
With reference to fig. 1-4, 8(a), 9(a) and 9(b), the single-row transmission rod variant flaring punch comprises four transmission rods 1-1, four punch petals 1-2, eight connecting arms 1-3, four transmission gears 1-4, four stopping barrels 1-5, four fastening bolts 1-6, two power gears 1-7 and two power rods 1-8.
The thread on the transmission rod 1-1 is divided into two sections, one section is a left-handed thread, the other section is a right-handed thread, the thread sections are the same in length, and the threads at the two ends are arranged on the transmission rod 1-1 in a bilateral symmetry manner; the four driving rods 1-1 are arranged in a 'well' shape but are not mutually connected, four punch head petals 1-2 are respectively arranged at four cross parts of the driving rods 1-1 through threaded holes, the punch head petals 1-2 are arranged on the driving rods 1-1 in a manner of forming thread pairs, the punch head petals on the four punch head petals 1-2 face the same direction, two punch head petals 1-2 on the same driving rod are positioned on thread sections in different spiral directions, the thread specifications of the corresponding thread sections of the two driving rods 1-1 arranged in the same horizontal or vertical direction are consistent with the spiral direction, the four punch head petals 1-2 and the four driving rods 1-1 are connected into a whole, and the four punch head petals form a complete punch head.
One end of the transmission rod 1-1 is provided with a square section, a transmission gear 1-4 with a square hole at the center is inserted into the square section at the end part of the transmission rod 1-1, a cylindrical stop cylinder 1-5 with a square hole at the middle is inserted into the square section at the end part of the transmission rod 1-1 to restrict the axial movement of the transmission gear 1-4, a fastening bolt 1-6 is used for fixing the stop cylinder 1-5 at the end part of the transmission rod 1-1 to prevent the stop cylinder 1-5 from falling off, a power gear 1-7 is fixedly connected with a power rod 1-8, the power gear 1-7 is mutually meshed with two transmission gears 1-4 at the end parts of the two transmission rods 1-1 in the same direction to form a transmission mechanism, the relative positions of the transmission gears 1-4 and the power gears 1-7 are fixed through a connecting arm 1-3, two connecting arms 1-3 are respectively arranged on two sides of a transmission gear 1-4, one end of each of the two connecting arms 1-3 close to one side of the transmission rod thread is arranged on the circular section of the transmission rod 1-1, one end of each of the two connecting arms 1-3 far away from one side of the transmission rod thread is arranged on a stopping cylinder 1-5, the other ends of the four connecting arms 1-3 are respectively connected with a power rod 1-8, the connecting arms 1-3 are rotatably connected with the transmission rod 1-1, the power rods 1-8 and the stopping cylinders 1-5, and the power rods 1-8 move axially to enable power gears 1-7 and the transmission gear 1-4 to be in a non-meshed state.
The working process of the single-row transmission rod variable flaring punch comprises the following steps:
step 1, installing the punch clacks 1-2 on the transmission rod 1-1 through the thread holes and threads on the transmission rod 1-1 in a mode of forming thread pairs.
And 2, mounting the transmission gear 1-4 to the square section at the end part of the transmission rod 1-1, mounting the stopping cylinder 1-5 to the square section at the end part of the transmission rod 1-1 and fixing the stopping cylinder by the fastening bolt 1-6 to restrict the axial movement of the transmission gear 1-4, and after assembling the power gear 1-7 and the power rod 1-8, mutually meshing the power gear 1-4 and the transmission gear 1-4 through the connecting arm 1-3 to form a transmission mechanism.
And 3, rotating the power rod 1-8 to enable the power gear 1-7 to rotate, enabling the transmission gear 1-4 to rotate through meshing action, enabling the transmission gear 1-4 to drive the transmission rod 1-1 to rotate, enabling the two punch pin lobes 1-2 located in different thread sections of the same transmission rod 1-1 to move in the opposite direction or the back direction along the transmission rod 1-1, enabling the relative positions of the punch pin lobes 1-2 to change, enabling the punch pin lobes 1-2 to move independently in the vertical direction and the horizontal direction, and obtaining the punch pin suitable for the shape of the pipe shown in the figure 9(b) by adjusting the relative position relation of the punch pin lobes 1-2. When the power transmission device works, the power gear 1-7 and the transmission gear 1-4 in one direction (horizontal or vertical) are in a meshed state, and the power rod 1-8 is moved in the other direction (vertical or horizontal) to enable the power gear 1-7 and the transmission gear 1-4 to be in a non-meshed state.
And 4, placing the punch with the adjusted shape at the end part of the pipe and applying an acting force along the axial direction of the pipe to obtain the pipe 11-1 flared by the variant punch as shown in fig. 9 (a).
Example 2
The double-row transmission rod variant flaring punch is described by combining the drawings of fig. 5, fig. 6, fig. 8(b), fig. 9(c) and fig. 9(d), and comprises two front end vertical direction transmission rods 2-1-1 of the punch, two front end horizontal direction transmission rods 2-1-2 of the punch, two rear end vertical direction transmission rods 2-1-3 of the punch, two rear end horizontal direction transmission rods 2-1-4 of the punch, four punch flaps 2-2, sixteen connecting arms 2-3, eight transmission gears 2-4, eight stop cylinders 2-5, eight fastening bolts 2-6, two power gears 2-7 and two power rods 2-8.
The two punch front end vertical direction transmission rods 2-1-1, the punch front end horizontal direction transmission rod 2-1-2, the punch rear end vertical direction transmission rod 2-1-3 and the punch rear end horizontal direction transmission rod 2-1-4 are all provided with two thread sections with the same length, one thread section is a left-handed thread and the other thread section is a right-handed thread, the two punch front end vertical direction transmission rods 2-1-1 and the two punch front end horizontal direction transmission rods 2-1-2 are arranged in a 'well' shape and are not connected with each other, the two punch rear end vertical direction transmission rods 2-1-3 and the two punch rear end horizontal direction transmission rods 2-1-4 are arranged in a 'well' shape and are not connected with each other, and the two groups of 'well' shaped transmission rods are arranged in a front-back alignment manner and are not connected with each other, the formed 8 cross points form four groups of cross positions which are aligned front and back, the four punch head petals 2-2 are respectively arranged on the four groups of cross positions through threaded holes, namely, the punch head petals 2-2 are arranged on corresponding transmission rods in a thread pair forming mode through the threaded holes and left-handed threads or right-handed threads on the transmission rods, the punch head petals on the four punch head petals 2-2 face the same direction, the two punch head petals 2-2 on the same transmission rod are positioned on thread sections with different spiral directions, the thread spiral directions of the thread sections corresponding to the punch head front end vertical direction transmission rod 2-1-1 and the punch head rear end vertical direction transmission rod 2-1-3 are opposite, the thread spiral directions of the thread sections corresponding to the punch head front end horizontal direction transmission rod 2-1-2 and the punch head rear end horizontal direction transmission rod 2-1-4 are opposite, the four punch pin petals 2-2 and the eight transmission rods are connected into a whole, and the four punch pin petals 2-2 form a complete punch pin.
One end of the punch front end vertical direction transmission rod 2-1-1 is provided with a square section, a transmission gear 2-4 with a square hole in the center is inserted into the square section at the end part of the punch front end vertical direction transmission rod 2-1-1, a cylindrical stopping cylinder 2-5 with a square hole in the middle is inserted into the square section at the end part of the punch front end vertical direction transmission rod 2-1-1 to restrain the transmission gear 2-4 from moving axially, and a fastening bolt 2-6 is used for fixing the stopping cylinder 2-5 at the end part of the punch front end vertical direction transmission rod 2-1-1 to prevent the stopping cylinder 2-5 from falling off; the end parts of the horizontal transmission rod at the front end of the punch, the vertical transmission rod 2-1-3 at the rear end of the punch and the horizontal transmission rod 2-1-4 at the rear end of the punch are provided with a transmission gear 2-7, a stop cylinder 2-5 and a fastening bolt 2-6 in the same way as the vertical transmission rod 2-1-1 at the front end of the punch.
A transmission gear 2-4 at the end part of the punch front end vertical direction transmission rod 2-1-1 and the punch rear end vertical direction transmission rod 2-1-3 (or the punch front end horizontal direction transmission rod 2-1-2 and the punch rear end horizontal direction transmission rod 2-1-4) which are positioned on the same punch segment 2-2 are mutually meshed and fixed in relative positions through a connecting arm 2-3, two sides of the meshed transmission gear 2-4 are respectively provided with a connecting arm 2-3, one end of each connecting arm 2-3 is connected to the punch front end vertical direction transmission rod 2-1-1 and the punch rear end vertical direction transmission rod 2-1-3 (or the punch front end horizontal direction transmission rod 2-1-2 and the punch rear end horizontal direction transmission rod 2-1-4) circular section, the other end is connected to a stop cylinder 2-5 on the corresponding transmission rod; a power gear 2-7 is fixedly connected with a power rod 2-8, the power gear 2-7 is meshed with a transmission gear 2-4 at the end part of two horizontal transmission rods 2-1-4 at the rear ends of the punches (or two vertical transmission rods 2-1-3 at the rear ends of the punches) and is fixed at a relative position through a connecting arm 2-3, one end of the connecting arm 2-3 is connected to the power rod 2-8, the other end of the connecting arm is connected to a stop cylinder 2-5 or a circular section of the horizontal transmission rod 2-1-4 at the rear ends of the punches (or the vertical transmission rod 2-1-3 at the rear ends of the punches), and the connecting arm 2-3 is connected with a vertical transmission rod 2-1-1 at the front ends of the punches (or the horizontal transmission rod 2-1-2 at the front ends of the punches, the vertical transmission rod 2-1-3 at the rear ends of the punches, The horizontal direction transmission rod 2-1-4) at the rear end of the punch, the power rod 2-8 and the stopping cylinder 2-5 are in rotary connection, so that a transmission mechanism is formed, and the power rod 2-8 moves along the axial direction to enable the power gear 2-7 and the transmission gear 2-4 to be in a non-meshing state.
The working process of the double-row transmission rod variable flaring punch comprises the following steps:
the power rod 2-8 is rotated to rotate the power gear 2-7, the transmission gear 2-4 at the end part of the horizontal transmission rod 2-1-4 at the rear end of the punch (or the vertical transmission rod 2-1-3 at the rear end of the punch) is rotated through meshing action, so as to drive the transmission gear 2-4 at the end part of the horizontal transmission rod 2-1-2 at the front end of the punch (or the vertical transmission rod 2-1-1 at the front end of the punch) to rotate, the vertical transmission rod 2-1-1 at the front end of the punch, the horizontal transmission rod 2-1-2 at the front end of the punch, the vertical transmission rod 2-1-3 at the rear end of the punch and the horizontal transmission rod 2-1-4 at the rear end of the punch rotate, and two punch segments 2-2 located in different thread sections of the same transmission rod move oppositely or reversely, the relative position of the punch lobe 2-2 is changed, and the punch suitable for the pipe shown in fig. 9(d) is obtained by adjusting the relative position relation of the punch lobe 2-2; when the power transmission mechanism works, the power gear 2-7 and the transmission gear 2-4 in one direction (horizontal or vertical) are in a meshed state, and the power rod 2-8 is moved in the other direction to enable the power gear 2-7 and the transmission gear 2-4 to be in a non-meshed state; and (c) placing the punch with the adjusted shape at the end part of the pipe and applying an acting force along the axial direction of the pipe to obtain the pipe 11-2 flared by the variant punch as shown in fig. 9 (c).
The beneficial effects of the embodiment are as follows: the rigidity of the variable flaring punch can be improved and the working stability of the variable flaring punch can be improved.
Example 3
Referring to fig. 8, the modified punch for flaring an end of a tube according to the present embodiment is characterized in that: the length l of the working section of the punch head valve and the taper alpha of the working section can be processed into a plurality of specifications according to requirements, and the punch head valves with different specifications are combined to meet the requirements of different application ranges. The others are the same as in example 1 or example 2.
Example 4
With reference to fig. 9, a modified punch for flaring a pipe end according to the present embodiment is characterized in that: several typical tubes 11-1, 11-2, 11-3 can be used with the variant punches. The rest is the same as in embodiment 1 or embodiment 2.
Example 5, with reference to fig. 5 to 7, 8(b), 9(e), and 9(f), describes a double row transmission rod variant flaring punch including two front end vertical direction transmission rods 2-1-1 of a punch, two front end horizontal direction transmission rods 2-1-2 of a punch, two rear end vertical direction transmission rods 2-1-3 of a punch, two rear end horizontal direction transmission rods 2-1-4 of a punch, four punch lobes 2-2, sixteen connecting arms 2-3, eight transmission gears 2-4, eight stopper barrels 2-5, eight fastening bolts 2-6, two power gears 2-7, two power rods 2-8, four 2-9 connecting pins, and four idle gears 2-10.
An idler wheel 2-10 is arranged between the transmission gear 2-4 at the end part of the punch front end vertical direction transmission rod 2-1-1 and the punch rear end vertical direction transmission rod 2-1-3, between the transmission gear 2-1-2 at the front end of the punch and the transmission gear 2-4 at the end part of the punch rear end horizontal direction transmission rod 2-1-4, the idler wheel 2-10 is meshed with the transmission gear 2-4 and is fixed at a relative position through a connecting arm 2-3, and the idler wheel 2-10 is connected with the connecting arm 2-3 through a connecting pin 2-9. The screw thread direction of the screw thread section corresponding to the punch front end vertical direction transmission rod 2-1 and the punch rear end vertical direction transmission rod 2-1-3 is the same, and the screw thread direction of the screw thread section corresponding to the punch front end horizontal direction transmission rod 2-1-2 and the punch rear end horizontal direction transmission rod 2-1-4 is the same.
With such an arrangement, the method can be applied to the case where the distance between the punch front end vertical direction transmission rod 2-1-1 and the punch rear end vertical direction transmission rod 2-1-3 is large, and the distance between the punch front end horizontal direction transmission rod 2-1-2 and the punch rear end horizontal direction transmission rod 2-1-4 is large, and the movement is transmitted through the idler pulley 2-10, and the other steps are the same as those in the embodiment 2, so that the pipe 11-3 flared by the variable type punch as shown in fig. 9(e) can be obtained.
The above-mentioned embodiments only express the embodiments of the present invention, but not should be understood as the limitation of the scope of the invention patent, it should be noted that, for those skilled in the art, many variations and modifications can be made without departing from the concept of the present invention, and these all fall into the protection scope of the present invention.
Claims (5)
1. The variable punch for pipe end flaring is characterized by comprising a single-row transmission rod variable flaring punch and a double-row transmission rod variable flaring punch.
2. The variant punch for flaring the end of the pipe according to claim 1, wherein the variant flaring punch with the single-row transmission rod comprises four transmission rods (1-1), four punch lobes (1-2), eight connecting arms (1-3), four transmission gears (1-4), four stopping barrels (1-5), four fastening bolts (1-6), two power gears (1-7) and two power rods (1-8);
the threads on the transmission rod (1-1) are divided into two sections, one section is left-handed threads, the other section is right-handed threads, the thread sections are the same in length, and the threads at the two ends are arranged on the transmission rod (1-1) in a bilateral symmetry manner; the four driving rods (1-1) are arranged in a 'well' shape but are not mutually connected, the four punch head petals (1-2) are respectively arranged at four cross parts of the driving rods (1-1) through threaded holes, the punch head petals (1-2) are arranged on the driving rods (1-1) in a thread pair forming mode, the punch head petals on the four punch head petals (1-2) face the same direction, the two punch head petals (1-2) on the same driving rod are positioned on thread sections in different spiral directions, the thread specifications of the corresponding thread sections of the two driving rods (1-1) arranged in the same horizontal or vertical direction are consistent with the spiral direction, the four punch head petals (1-2) and the four driving rods (1-1) are connected into a whole, and the four punch head petals form a complete punch head;
one end of the transmission rod (1-1) is provided with a square section, a transmission gear (1-4) with a square hole in the center is inserted into the square section at the end of the transmission rod, a cylindrical stop cylinder (1-5) with a square hole in the middle is inserted into the square section at the end of the transmission rod (1-1) to restrict the axial movement of the transmission gear (1-4), a fastening bolt (1-6) is used for fixing the stop cylinder (1-5) at the end of the transmission rod (1-1) to prevent the stop cylinder (1-5) from falling off, a power gear (1-7) is fixedly connected with a power rod (1-8), the power gear (1-7) is meshed with two transmission gears (1-4) at the ends of the two transmission rods (1-1) in the same direction to form a transmission mechanism, and the relative positions between the transmission gears (1-4) and the power gears (1-7) are formed by a connecting arm (1-4) -3) fixing, wherein two connecting arms (1-3) are respectively arranged on two sides of a transmission gear (1-4), one end of each of the two connecting arms (1-3) close to one side of the transmission rod thread is arranged on the circular section of the transmission rod (1-1), one end of each of the two connecting arms (1-3) far away from one side of the transmission rod thread is arranged on a stopping cylinder (1-5), the other ends of the four connecting arms (1-3) are connected with power rods (1-8), the connecting arms (1-3) are in rotary connection with the transmission rod (1-1), the power rods (1-8) and the stopping cylinders (1-5), and the power rods (1-8) move axially to enable the power gears (1-7) and the transmission gears (1-4) to be in a non-meshed state.
3. The modified punch for flaring an end of a pipe according to claim 2, wherein the single row transmission rod modified flaring punch is operated according to the following steps:
step 1, mounting a punch head clack (1-2) on a transmission rod (1-1) in a manner of forming a thread pair through a threaded hole and a thread on the transmission rod (1-1);
step 2, mounting a transmission gear (1-4) to the square section at the end part of the transmission rod (1-1), mounting a stopping cylinder (1-5) to the square section at the end part of the transmission rod (1-1) and fixing the stopping cylinder through a fastening bolt (1-6) to restrain the axial movement of the transmission gear (1-4), and after assembling a power gear (1-7) and a power rod (1-8), mutually meshing the power gear (1-4) and the transmission gear (1-4) through a connecting arm (1-3) to form a transmission mechanism;
step 3, rotating the power rod (1-8) to enable the power gear (1-7) to rotate, enabling the transmission gear (1-4) to rotate through meshing, enabling the transmission gear (1-4) to drive the transmission rod (1-1) to rotate, enabling two punch head flaps (1-2) located in different thread sections of the same transmission rod (1-1) to move in the opposite direction or the reverse direction along the transmission rod (1-1), so that the relative positions of the punch head flaps (1-2) are changed, enabling the punch head flaps (1-2) to move in the vertical direction and the horizontal direction independently, and obtaining punch heads in different shapes by adjusting the relative position relationship of the punch head flaps (1-2); when the power transmission device works, the power gears (1-7) and the transmission gears (1-4) in one direction are in a meshed state, and the power rods (1-8) are moved in the other direction to enable the power gears (1-7) and the transmission gears (1-4) to be in a non-meshed state;
and 4, placing the punch with the adjusted shape at the end part of the pipe and applying an acting force along the axial direction of the pipe to realize the flaring of the pipes with different shapes and specifications.
4. The variant punch for flaring the end of the pipe according to claim 1, wherein the variant flaring punch comprises two punch front end vertical direction transmission rods (2-1-1), two punch front end horizontal direction transmission rods (2-1-2), two punch rear end vertical direction transmission rods (2-1-3), two punch rear end horizontal direction transmission rods (2-1-4), four punch flaps (2-2), sixteen connecting arms (2-3), eight transmission gears (2-4), eight stop cylinders (2-5), eight fastening bolts (2-6), two power gears (2-7) and two power rods (2-8);
the two punch front end vertical direction transmission rods (2-1-1), the punch front end horizontal direction transmission rod (2-1-2), the punch rear end vertical direction transmission rod (2-1-3) and the punch rear end horizontal direction transmission rod (2-1-4) are all provided with two sections of thread sections with the same length, one section is a left-handed thread and the other section is a right-handed thread, the two punch front end vertical direction transmission rods (2-1-1) and the two punch front end horizontal direction transmission rods (2-1-2) are arranged in a 'well' shape and are not connected with each other, the two punch rear end vertical direction transmission rods (2-1-3) and the two punch rear end horizontal direction transmission rods (2-1-4) are arranged in a 'well' shape and are not connected with each other, and the two groups of 'well' transmission rods are arranged in a front-back alignment and are not connected with each other, the formed 8 cross points form four groups of cross positions which are aligned front and back, four punch head petals (2-2) are respectively arranged on the four groups of cross positions through threaded holes, namely, the punch head petals (2-2) are arranged on corresponding transmission rods in a manner of forming thread pairs through the threaded holes and left-handed threads or right-handed threads on the transmission rods, the punch head petals on the four punch head petals (2-2) face the same direction, two punch head petals (2-2) on the same transmission rod are positioned on thread sections with different spiral directions, the thread spiral directions of the corresponding thread sections of the punch head front end vertical direction transmission rod (2-1-1) and the punch head rear end vertical direction transmission rod (2-1-3) are opposite, the thread spiral directions of the corresponding thread sections of the punch head front end horizontal direction transmission rod (2-1-2) and the punch head rear end horizontal direction transmission rod (2-1-4) are opposite, the four punch clacks (2-2) and the eight transmission rods are connected into a whole, and the four punch clacks (2-2) form a complete punch;
one end of the punch front end vertical direction transmission rod (2-1-1) is provided with a square section, a transmission gear (2-4) with a square hole in the center is inserted into the square section at the end of the punch front end vertical direction transmission rod (2-1-1), a cylindrical stopping cylinder (2-5) with a square hole in the middle is inserted into the square section at the end of the punch front end vertical direction transmission rod (2-1-1) to restrict the axial movement of the transmission gear (2-4), and a fastening bolt (2-6) is used for fixing the stopping cylinder (2-5) at the end of the punch front end vertical direction transmission rod (2-1-1) to prevent the stopping cylinder (2-5) from falling off; the end parts of the horizontal transmission rod at the front end of the punch, the vertical transmission rod (2-1-3) at the rear end of the punch and the horizontal transmission rod (2-1-4) at the rear end of the punch are provided with a transmission gear (2-4), a stop cylinder (2-5) and a fastening bolt (2-6) in the same way as the vertical transmission rod (2-1-1) at the front end of the punch;
a punch head front end vertical direction transmission rod (2-1-1) and a punch head rear end vertical direction transmission rod (2-1-3) which are positioned on the same punch head valve, or the punch head front end horizontal direction transmission rod (2-1-2) and a transmission gear (2-4) at the end part of the punch head rear end horizontal direction transmission rod (2-1-4) are mutually meshed and fixed with relative positions through a connecting arm (2-3), two sides of the meshed transmission gear (2-4) are respectively provided with a connecting arm (2-3), one end of the connecting arm (2-3) is connected to the punch head front end vertical direction transmission rod (2-1-1) and the punch head rear end vertical direction transmission rod (2-1-3), or the punch head front end horizontal direction transmission rod (2-1-2) and the punch head rear end horizontal direction transmission rod (2-1-4) circular sections, the other end is connected to a stop cylinder (2-5) on the corresponding transmission rod; a power gear (2-7) is fixedly connected with a power rod (2-8), the power gear (2-7) is meshed with two horizontal transmission rods (2-1-4) at the rear ends of the punches or transmission gears (2-4) at the ends of two vertical transmission rods (2-1-3) at the rear ends of the punches and fixed at relative positions through a connecting arm (2-3), one end of the connecting arm (2-3) is connected to the power rod (2-8), the other end of the connecting arm is connected to a stopping cylinder (2-5) or the horizontal transmission rod (2-1-4) at the rear ends of the punches or the circular section of the vertical transmission rod (2-1-3) at the rear ends of the punches, and the connecting arm (2-3) and the vertical transmission rod (2-1-1) at the front ends of the punches, The horizontal transmission rod (2-1-2) at the front end of the punch, the vertical transmission rod (2-1-3) at the rear end of the punch, the horizontal transmission rod (2-1-4) at the rear end of the punch, the power rod (2-8) or the stopping cylinder (2-5) are in rotary connection, so that a transmission mechanism is formed, and the power rod (2-8) moves along the axial direction to enable the power gear (2-7) and the transmission gear (2-4) to be in a non-meshed state.
5. The modified punch for flaring the end of a pipe material of claim 4, wherein the double row transmission rod modified flaring punch comprises the following steps:
the power gear (2-7) is rotated by rotating the power rod (2-8), the horizontal transmission rod (2-1-4) at the rear end of the punch or the transmission gear (2-4) at the end part of the vertical transmission rod (2-1-3) at the rear end of the punch is rotated through meshing action, so that the horizontal transmission rod (2-1-2) at the front end of the punch or the transmission gear (2-4) at the end part of the vertical transmission rod (2-1-1) at the front end of the punch is driven to rotate, the vertical transmission rod (2-1-1) at the front end of the punch, the horizontal transmission rod (2-1-2) at the front end of the punch, the vertical transmission rod (2-1-3) at the rear end of the punch and the horizontal transmission rod (2-1-4) at the rear end of the punch are rotated, two punch head flaps positioned on different thread sections of the same transmission rod move oppositely or reversely, so that the relative positions of the punch head flaps are changed, and punches in different shapes are obtained by adjusting the relative position relationship of the punch head flaps; when the power transmission mechanism works, the power gear (2-7) and the transmission gear (2-4) in one direction are in a meshed state, and the power rod (2-8) is moved in the other direction to enable the power gear (2-7) and the transmission gear (2-4) to be in a non-meshed state; and placing the punch with the well adjusted shape at the end part of the pipe and applying an acting force along the axial direction of the pipe to realize the flaring of the pipes with different shapes and specifications.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210471744.6A CN114985612A (en) | 2022-04-29 | 2022-04-29 | Variant punch for flaring of pipe end |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210471744.6A CN114985612A (en) | 2022-04-29 | 2022-04-29 | Variant punch for flaring of pipe end |
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| CN114985612A true CN114985612A (en) | 2022-09-02 |
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| CN202210471744.6A Pending CN114985612A (en) | 2022-04-29 | 2022-04-29 | Variant punch for flaring of pipe end |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116852045A (en) * | 2023-07-25 | 2023-10-10 | 东莞市金源制冷科技有限公司 | Technological preparation flow of aluminum alloy air conditioner connecting pipe and flaring processing device thereof |
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2022
- 2022-04-29 CN CN202210471744.6A patent/CN114985612A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116852045A (en) * | 2023-07-25 | 2023-10-10 | 东莞市金源制冷科技有限公司 | Technological preparation flow of aluminum alloy air conditioner connecting pipe and flaring processing device thereof |
| CN116852045B (en) * | 2023-07-25 | 2023-12-29 | 东莞市金源制冷科技有限公司 | Technological preparation flow of aluminum alloy air conditioner connecting pipe and flaring processing device thereof |
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