Burr chamfering clamp for pipe fitting

Abstract

The invention relates to a burr chamfering clamp for pipe fittings. The burr chamfering clamp comprises a bottom plate, a vertical plate, a first motor, a bidirectional lead screw, a fixing unit and a polishing unit. The bottom plate is a rectangular steel plate and is used for supporting the whole device; the two vertical plates are vertically fixed to the two ends of the bottom plate correspondingly. The first motor is fixed to the top of the left vertical plate and used for driving the two-way lead screw to rotate. One end of the bidirectional lead screw is connected with an output shaft of the motor I, and the other end of the bidirectional lead screw is fixed on the right side vertical plate through a bearing seat; the fixing unit is fixed to the bottom plate, located behind the vertical plate and used for fixing a pipe fitting. The two polishing units are arranged in a mirror image mode, are slidably connected to the two ends of the two-way lead screw correspondingly and are used for polishing and deburring the inner wall of the pipe fitting; the technical effects that multiple pipe fittings can be efficiently fixed and synchronously deburred at a time, the production efficiency is improved, the application range is expanded, and the subsequent machining precision is improved are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical processing, and in particular to a burr chamfering fixture for pipe fittings. Background Art

[0002] Among all kinds of mechanical parts, pipe fittings are widely used. During the processing and installation of pipe fittings, it is very important to remove the burrs on the inner diameter of the pipe fittings in time, because this can ensure the normal operation of the pipeline. The fixture for deburring and chamfering both ends of the pipe fittings plays a pivotal role in the processing of pipe fittings. Therefore, choosing the right fixture can ensure operation safety, improve processing accuracy, improve work efficiency, prevent deformation of pipe fittings, thereby reducing production costs and saving time and manpower.

[0003] The Chinese invention patent with patent number CN113977383B discloses a deburring device for mechanical processing, including a support plate, two symmetrically distributed first side plates and a second side plate are arranged on the top of the support plate, a first spiral rod is arranged on the top of the support plate, the threads at both ends of the first spiral rod are symmetrical and distributed in opposite directions, and two matching first sleeves are threadedly connected on the outer wall of the first spiral rod; the invention can simultaneously deburr both ends of a steel pipe, and the grinding head can not only deburr the inner wall end of the steel pipe, but also grind and deburr the inner and outer wall end faces of the steel pipe synchronously, with good deburring effect and high efficiency, and the various components cooperate and interact with each other to jointly complete the grinding and deburring of the inner and outer wall end faces of the steel pipe.

[0004] However, during the actual use of the above solution, although the processing efficiency and accuracy have been improved to a certain extent, it is impossible to achieve efficient fixation and synchronous deburring of multiple pipe fittings at one time for large-scale processing and manufacturing, which may lead to reduced production efficiency and cost-effectiveness; and the single-structure clamping mechanism cannot perform corresponding fixation on pipe fittings of different structures, and cannot ensure that the force on the pipe fittings is uniform, which may lead to inaccurate and unstable fixation, thereby affecting the subsequent processing accuracy and reducing the quality of the processed pipe fittings. Summary of the invention

[0005] In view of the technical problems existing in the prior art, the present invention provides a burr chamfering fixture for pipe fittings, which solves the technical problems in the prior art that multiple pipe fittings cannot be efficiently fixed and synchronously deburred at one time, the production efficiency is low, the scope of application is low, and the subsequent processing accuracy is affected. The present invention achieves the technical effects of being able to efficiently fix and synchronously deburr multiple pipe fittings at one time, improving the production efficiency, expanding the scope of application, and improving the subsequent processing accuracy.

[0006] The technical solution of the present invention to solve the above technical problem is as follows: A burr chamfering fixture for pipe fittings, comprising a base plate, a vertical plate, a motor 1, a bidirectional lead screw, a fixing unit and a grinding unit; The base plate is a rectangular steel plate, which is used to provide support for the entire device; there are two vertical plates, which are respectively fixed vertically at the two ends of the base plate; the motor 1 is fixed on the top of the left vertical plate, which is used to drive the bidirectional lead screw to rotate; the bidirectional lead screw is horizontally arranged, one end is connected to the output shaft of the motor 1, and the other end is fixed to the right vertical plate through a bearing seat; the fixing unit is fixed on the base plate and located behind the vertical plate, which is used to fix the pipe fittings; there are two grinding units, which are arranged in a mirror image and are respectively slidably connected to the two ends of the bidirectional lead screw, which are used to grind and deburr the inner wall of the pipe fittings.

[0007] Furthermore, the fixing unit includes a four-axis turntable, an oil circuit distributor, an oil circuit flange, a fixture vertical plate, a hydraulic angle cylinder, an angle cylinder pressure rod, an angle cylinder pressure block, a directional block and an adjustment pressure block; The four-axis turntable is installed on the bottom plate and is located behind the vertical plate to adjust the angle of the pipe fittings; the oil circuit distributor is fixed on the rear side of the four-axis turntable to distribute and transmit hydraulic oil; the oil circuit flange is connected to the front side of the four-axis turntable to connect the fixture vertical plate; the fixture vertical plate is placed horizontally and fixed on the front side of the oil circuit flange to provide a support surface for the pipe fittings; two hydraulic angle cylinders are provided, both fixed on the fixture vertical plate to provide clamping force; two angle cylinder pressure rods are provided, one corresponding to the hydraulic angle cylinders, They are respectively fixed at the output end of the corresponding hydraulic angle cylinder for transmitting the clamping force; there are two corner cylinder pressure blocks, which correspond to the corner cylinder pressure rods one by one and are respectively fixed at the upper ends of the corresponding corner cylinder pressure rods for pressing and fixing the pipe fittings under the action of the hydraulic angle cylinder; there are four directional blocks, which are all slidably connected in the fixture vertical plate and located below the pipe fittings for supporting the pipe fittings with semicircular arc groove structures; there are four adjustment pressure blocks, which are respectively fixed at the bottom of the fixture vertical plate and located below the corresponding directional blocks for adjusting the positions of the directional blocks.

[0008] Furthermore, four semicircular arc grooves are evenly arranged on the upper surface of the fixture vertical plate, which are used to provide a fixing position for the pipe fitting and fit the pipe fitting structure; the upper end of the orienting block is an arc surface structure, which is used to support the pipe fitting with a semicircular arc groove structure; the side of the corner cylinder pressure block that is in direct contact with the pipe fitting is made of rubber material to prevent damage to the surface of the pipe fitting.

[0009] Furthermore, the grinding unit includes a movable ring, a connecting plate, and a grinding assembly; the movable ring is slidably connected to the bidirectional screw by a threaded connection; the connecting plate is fixed to the bottom of the movable ring for connecting the grinding assembly; two grinding assemblies are provided, arranged front and back, and respectively fixed at the front and rear ends of the connecting plate, for respectively performing synchronous deburring processing on the corresponding pipe fittings.

[0010] Preferably, the grinding assembly includes a second motor, a fixed cylinder, a gear, a rotating block, a support rod and a grinding head; The second motor is fixed on the connecting plate and is used to drive the gear to rotate; the fixed cylinder is fixed on the connecting plate and is arranged opposite to the second motor; the gear is connected to the output shaft of the second motor and is used to drive the rotating block to rotate; there are four rotating blocks, which are evenly arranged along the circumference of the fixed cylinder, slidingly connected in the fixed cylinder and meshing with the gear for transmission; there are four support rods, which are respectively connected to the corresponding rotating blocks by hinged manner; there are four grinding heads, which are all rotatably connected to the ends of the corresponding support rods, and are used to grind and deburr the pipe fittings.

[0011] Preferably, a capsule is fixed to the end of the second output shaft of the motor. The capsule is a circular ring structure and its interior is connected to an external air pump through a pipeline, so as to adjust the inclination angle of the support rod and thus control the processing angle.

[0012] Preferably, the bag body has two parts, namely an air bag and a wax bag; the air bag and the wax bag are both fixed at the end of the second output shaft of the motor and arranged on the left and right; the air bag is located on the side away from the pipe, and the wax bag is located on the side close to the pipe.

[0013] Furthermore, the movable ring is rotatably connected to the connecting plate via a short pin, and a servo motor is fixed to the rear side of the movable ring. The short pin is connected to the output shaft of the servo motor to drive the grinding assembly to rotate.

[0014] Preferably, the grinding unit further includes a leveling assembly, four of which are provided, corresponding one to one with the grinding assemblies, and the leveling assembly includes a straightening plate, a pull rope, and an iron ball; The straightening plate is detachably fixed to the bottom of the vertically placed wax bag, and is used to keep the bottom of the wax bag level during the wax filling and solidification process; four pull ropes are provided and evenly fixed to the bottom of the straightening plate; four iron balls are provided and fixed to the corresponding ends of the pull ropes, and are used to straighten the pull ropes through magnetic attraction and make the bottom of the wax bag parallel to the ground.

[0015] Furthermore, a horizontal plate is fixed on the opposite surfaces of the two vertical plates, and a plurality of grooves corresponding to the positions of the iron balls are opened on the upper surface of the horizontal plate. Magnets are arranged inside the grooves for adsorbing the iron balls and keeping the aligning plate in a horizontal position.

[0016] The beneficial effects of the present invention are as follows: by adopting a hydraulic drive mode and a multi-component coordination mode to fix the pipe fittings, and arranging an arc surface structure above the fixture vertical plate, multiple pipe fittings can be fixed and deburred in one operation, thereby improving work efficiency, and arranging a directional block can further fit the pipe fitting structure with a semi-circular arc groove structure, provide stable support, ensure that the pipe fittings are evenly stressed, and expand the scope of application, thereby solving the technical problems in the prior art that efficient fixation and synchronous deburring of multiple pipe fittings at one time, low production efficiency, low scope of application, and impact on subsequent processing accuracy can be achieved, and the technical effects of efficient fixation and synchronous deburring of multiple pipe fittings at one time, improved production efficiency, expanded scope of application, and improved subsequent processing accuracy can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The present invention is a schematic diagram of the overall three-dimensional structure of a burr chamfering fixture for pipe fittings.

[0018] Figure 2 The present invention is a schematic diagram of a state in which a fixing unit of a burr chamfering fixture for a pipe fitting is clamping the pipe fitting.

[0019] Figure 3 The present invention is a schematic three-dimensional structural diagram of a part of the fixing unit of a burr chamfering fixture for pipe fittings.

[0020] Figure 4 The present invention is a schematic diagram of the three-dimensional structure of a grinding unit of a burr chamfering fixture for pipe fittings.

[0021] Figure 5 The present invention is a schematic diagram of the three-dimensional structure of a grinding assembly of a burr chamfering fixture for pipe fittings.

[0022] Figure 6 It is a partial enlarged schematic diagram of point A of a burr chamfering fixture for pipe fittings of the present invention.

[0023] Figure 7 This is a state diagram of a grinding unit of a burr chamfering fixture for pipe fittings of the present invention during deburring and chamfering.

[0024] Figure 8 The present invention is a front view of a grinding unit of a burr chamfering fixture for pipe fittings during position correction.

[0025] Fig. 9 The present invention is a schematic diagram of the grinding assembly of a burr chamfering fixture for pipe fittings during position correction.

[0026] In the accompanying drawings, the components represented by the reference numerals are listed as follows: 100, bottom plate, 110, vertical plate, 120, motor one, 130, bidirectional screw, 200, fixed unit, 210, four-axis turntable, 220, oil circuit distributor, 230, oil circuit flange, 240, fixture vertical plate, 250, hydraulic angle cylinder, 260, angle cylinder pressure rod, 270, angle cylinder pressure block, 280, orientation block, 290, adjustment pressure block, 300, grinding unit, 310, moving ring, 320, connecting plate, 330, grinding assembly, 331, motor two, 332, fixed cylinder, 333, gear, 334, rotating block, 335, support rod, 336, grinding head, 340, capsule, 341, air bag, 342, wax bag, 350, straightening plate, 351, pull rope, 352, iron ball, 360, horizontal plate. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application.

[0028] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "plurality" means two or more, unless otherwise clearly and specifically defined.

[0029] In the description of the present application, the term "for example" is used to mean "used as an example, illustration or description". Any embodiment described as "for example" in the present application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is given to enable any technician in the field to implement and use the present invention. In the following description, details are listed for the purpose of explanation. It should be understood that a person of ordinary skill in the art can recognize that the present invention can be implemented without using these specific details. In other examples, well-known structures and processes will not be elaborated in detail to avoid unnecessary details to obscure the description of the present invention. Therefore, the present invention is not intended to be limited to the embodiments shown, but is consistent with the widest scope consistent with the principles and features disclosed in the present application.

[0030] See also Figure 1, which is a schematic diagram of the overall three-dimensional structure of a burr chamfering fixture for pipe fittings of the present invention; the burr chamfering fixture for pipe fittings of the present invention fixes the pipe fittings by adopting a hydraulic drive method and a multi-component cooperation method, and an arc surface structure is arranged above the fixture vertical plate 240, so that the device can fix and deburr multiple pipe fittings with only one operation, thereby improving work efficiency; and the arrangement of the directional block 280 can further fit the pipe fitting structure with a semicircular arc groove structure and provide stable support for it, which can achieve the technical effects of efficient fixation and synchronous deburring of multiple pipe fittings at one time, improved production efficiency, expanded scope of application, and improved subsequent processing accuracy.

[0031] Example 1 See also Figures 1 to 3 The embodiment of the present invention provides a burr chamfering fixture for pipe fittings, including a base plate 100, a vertical plate 110, a motor 120, a bidirectional lead screw 130, a fixing unit 200 and a grinding unit 300; The bottom plate 100 is a rectangular steel plate, used to provide support for the entire device; The vertical plates 110 are provided with two, and are respectively vertically fixed at two ends of the bottom plate 100; The motor 120 is fixed on the top of the left vertical plate 110 and is used to drive the bidirectional lead screw 130 to rotate; The bidirectional lead screw 130 is arranged horizontally, one end of which is connected to the output shaft of the motor 120, and the other end of which is fixed to the right vertical plate 110 through a bearing seat; The fixing unit 200 is fixed on the bottom plate 100 and is located behind the vertical plate 110, and is used to fix the pipe fittings; The grinding units 300 are provided with two, mirror-arranged, and slidably connected to the two ends of the bidirectional lead screw 130, respectively, for grinding and deburring the inner wall of the pipe.

[0032] The fixing unit 200 includes a four-axis turntable 210, an oil distributor 220, an oil flange 230, a fixture stand 240, a hydraulic angle cylinder 250, an angle cylinder pressure rod 260, an angle cylinder pressure block 270, an orientation block 280 and an adjustment pressure block 290; The four-axis turntable 210 is installed on the bottom plate 100 and is located behind the vertical plate 110, and is used to adjust the angle of the pipe placement; The oil distributor 220 is fixed on the rear side of the four-axis turntable 210 and is used to distribute and transmit hydraulic oil; The oil flange 230 is connected to the front side of the four-axis turntable 210 and is used to connect the fixture vertical plate 240; The fixture stand plate 240 is placed horizontally and fixed on the front side of the oil line flange 230 to provide a support surface for the pipe fitting; The hydraulic angle cylinders 250 are provided with two, both fixed on the fixture vertical plate 240, for providing clamping force; The angle cylinder pressure rods 260 are provided with two, corresponding to the hydraulic angle cylinders 250 one by one, and are respectively fixed to the output ends of the corresponding hydraulic angle cylinders 250 for transmitting the clamping force; The corner cylinder pressing blocks 270 are provided with two, corresponding to the corner cylinder pressing rods 260 one by one, and are respectively fixed to the upper ends of the corresponding corner cylinder pressing rods 260, and are used to press and fix the pipe fittings under the action of the hydraulic corner cylinder 250; There are four directional blocks 280, all of which are slidably connected in the fixture vertical plate 240 and located below the pipe fittings, and are used to support the pipe fittings with a semicircular arc groove structure; There are four adjustment pressing blocks 290 , which are respectively fixed at the bottom of the fixture vertical plate 240 and located below the corresponding directional blocks 280 , and are used to adjust the positions of the directional blocks 280 .

[0033] The upper surface of the clamp vertical plate 240 is evenly provided with four semicircular grooves for providing a fixing position for the pipe and fitting the pipe structure; the upper end of the orienting block 280 is an arc surface structure for supporting the pipe with a semicircular groove structure; the side of the corner cylinder pressure block 270 that is in direct contact with the pipe is made of rubber material to prevent damage to the surface of the pipe.

[0034] When the embodiment of the present application is actually running, the steps are as follows: Step 1: Place four pipes to be processed in the semicircular grooves on the fixture vertical plate 240 respectively and place them opposite to each other in pairs, and ensure that the pipes are positioned correctly by adjusting the pressing block 290 and the orientation block 280; Step 2: Start the hydraulic angle cylinder 250, and press and fix the four pipe fittings through the angle cylinder pressure rod 260 and the angle cylinder pressure block 270; Step 3: Start the motor 120 to rotate forward, drive the bidirectional lead screw 130 to rotate, and make the moving rings 310 on both sides move toward each other synchronously along the bidirectional lead screw 130 and move to the pipe processing position; Step 4: Start the two grinding units 300 and start grinding and deburring the inner diameters of the four pipe fittings at both ends to achieve fine grinding of the inner diameters of the end faces of the pipe fittings; Step 5: After the grinding process is completed, stop the grinding unit 300, and start the motor 120 to reverse, drive the bidirectional screw 130 to rotate, so that the moving rings 310 on both sides move synchronously along the bidirectional screw 130 away from each other and move to the initial position, remove the four pipe fittings by a robot or manually, and put the pipe fittings to be processed, and repeat the above operation.

[0035] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages: By adopting the method of hydraulic drive and multi-component coordination to fix the pipe fittings, the problems of loose pipe fittings and inaccurate positioning in the traditional clamping method are effectively solved, the processing accuracy and efficiency are improved, and the technical problems in the prior art that it is impossible to achieve efficient fixation and synchronous deburring of multiple pipe fittings at one time, low production efficiency, low scope of application, and impact on subsequent processing accuracy are solved. The technical effect of being able to achieve efficient fixation and synchronous deburring of multiple pipe fittings at one time, improved production efficiency, expanded scope of application, and improved subsequent processing accuracy is achieved.

[0036] Example 2 In order to make the pipe fittings more finely polished during the polishing process and improve the flexibility of the device, the present application proposes the following technical solutions for the above technical problems, specifically: See also Figures 4 to 6 , the grinding unit 300 includes a moving ring 310, a connecting plate 320, and a grinding assembly 330; The moving ring 310 is slidably connected to the bidirectional lead screw 130 by means of a threaded connection; The connecting plate 320 is fixed to the bottom of the moving ring 310 and is used to connect the grinding assembly 330; The grinding assemblies 330 are provided with two, arranged front and back, and fixed to the front and rear ends of the connecting plate 320 respectively, for performing synchronous deburring processing on the corresponding pipe fittings respectively.

[0037] The grinding assembly 330 includes a second motor 331, a fixed cylinder 332, a gear 333, a rotating block 334, a support rod 335 and a grinding head 336; The second motor 331 is fixed on the connecting plate 320 and is used to drive the gear 333 to rotate; The fixing cylinder 332 is fixed on the connecting plate 320 and arranged opposite to the second motor 331; The gear 333 is connected to the output shaft of the second motor 331 and is used to drive the rotating block 334 to rotate; The rotating blocks 334 are provided with four pieces, which are evenly arranged along the circumference of the fixed cylinder 332, are slidably connected in the fixed cylinder 332 and mesh with the gear 333 for transmission; There are four support rods 335, which are respectively connected to the corresponding rotating blocks 334 by hinged manner; There are four grinding heads 336 , all of which are rotatably connected to the ends of corresponding support rods 335 , and are used to grind and remove burrs from pipe fittings.

[0038] A capsule 340 is also fixed to the end of the output shaft of the second motor 331. The capsule 340 is a circular ring structure and its interior is connected to an external air pump through a pipeline, so as to adjust the inclination angle of the support rod 335 and thus control the processing angle.

[0039] The present application adjusts the inclination angle of the support rod 335 by controlling the inflation amount of the air bag 340, and then controls the position of the grinding head 336, so that the grinding head 336 is more closely fitted to the size structure of the pipe fitting; the grinding head 336 is driven by the motor 2 331 to rotate and revolve, so that the inner diameter of the end face of the pipe fitting can be finely polished, and the grinding pressure of the grinding head 336 on the inner wall of the pipe fitting can be adjusted in real time by controlling the inflation amount of the air bag 341, so as to ensure the grinding effect, improve the processing accuracy of the pipe fitting grinding, and improve the flexibility of the device.

[0040] Example 3 Considering that the support rod 335 needs to be fixed in position in the initial state, and in order to improve the stability of the device operation, improve the processing accuracy and reduce the processing error, the present application proposes the following technical solutions for the above technical problems, specifically: See also Figures 7 to 9 The bag body 340 has two parts, namely an air bag 341 and a wax bag 342; the air bag 341 and the wax bag 342 are both fixed to the end of the output shaft of the motor 2 331, and are arranged on the left and right; the air bag 341 is located on the side away from the pipe fitting, and the wax bag 342 is located on the side close to the pipe fitting.

[0041] In this embodiment, the position of the support rod 335 and the grinding head 336 is fixed by using a capsule 340 structure, and the position of the support rod 335 is initially fixed by utilizing the solidification characteristics of the wax capsule 342 and filling it with wax water to make it solidify. In addition, due to the expansion characteristics of the capsule 340, the vibration generated during the grinding process can be effectively reduced, thereby improving the operation stability and processing accuracy.

[0042] Example 4 Considering that during the process of filling wax water, there may be too much wax water at the bottom of the wax capsule 342 due to its own gravity, so that the wax water is unevenly distributed after solidification in the wax capsule 342, affecting the positioning of the initial position, and then making the angles between each support rod 335 and the central axis of the gear 333 inconsistent, resulting in inaccurate positioning of the grinding head 336, affecting the contact angle between the grinding head 336 and the pipe fitting, resulting in the inability to always closely fit the inner wall of the pipe fitting with different inner diameters, reducing the removal of the inner diameter burr of the pipe fitting and the processing accuracy, the present application proposes the following technical solutions for the above technical problems, specifically: See also Figures 7 and 8 The moving ring 310 is rotatably connected to the connecting plate 320 via a short pin, and a servo motor is fixed to the rear side of the moving ring 310. The short pin is connected to the output shaft of the servo motor to drive the grinding assembly 330 to rotate.

[0043] The polishing unit 300 further includes a leveling assembly, and four leveling assemblies are provided, corresponding to the polishing assemblies 330 one by one, and the leveling assembly includes a straightening plate 350, a pull rope 351, and an iron ball 352; The straightening plate 350 is detachably fixed to the bottom of the vertically placed wax capsule 342, and is used to keep the bottom of the wax capsule 342 level during the wax filling and solidification process; The pull ropes 351 are provided with four and are evenly fixed on the bottom of the straightening plate 350; Four iron balls 352 are provided and fixed at the ends of the corresponding pull ropes 351 respectively, so as to straighten the pull ropes 351 through magnetic attraction and make the bottom of the wax capsule 342 parallel to the ground.

[0044] A horizontal plate 360 ​​is fixed to the opposite surfaces of the two vertical plates 110. The upper surface of the horizontal plate 360 ​​is provided with a plurality of grooves corresponding to the positions of the iron balls 352. Magnets are arranged inside the grooves for adsorbing the iron balls 352 and keeping the aligning plate 350 in a horizontal position.

[0045] The present application ensures the horizontal state of the wax capsule 342 during the solidification process through the mutual coordination and magnetic attraction of the squaring plate 350, the pull rope 351, the iron ball 352, and the horizontal plate 360, further improves the initial position accuracy of the support rod 335, and thus improves the grinding accuracy of the inner diameter of the pipe by the grinding head 336.

[0046] During the actual operation of the present application, the steps are as follows: before the grinding process, the servo motor drives the grinding assembly 330 to rotate 90° in the forward direction so that the wax capsule 342 is placed horizontally; then, wax water is filled into the wax capsule 342, and after the wax water solidifies, the bottom of the wax capsule 342 is ensured to be horizontal by cooperating with the straightening plate 350, the pull rope 351, the iron ball 352 and the horizontal plate 360, thereby preliminarily fixing the position of the support rod 335; finally, the servo motor is started to reverse and drive the grinding assembly 330 to rotate 90° in the reverse direction so that the wax capsule 342 is placed vertically, and the motor 1 120 and the motor 2 331 are started in turn to drive the grinding unit 300 and the grinding head 336 to rotate, and the inclination angle of the support rod 335 is adjusted by controlling the inflation amount of the airbag 341, so that the grinding head 336 is in close contact with the inner wall of the pipe fitting for grinding and deburring.

[0047] It should be noted that in the above embodiments, the description of each embodiment has its own emphasis, and for parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0048] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A burr chamfering fixture for pipe fittings, characterized in that: The device comprises a bottom plate (100), a vertical plate (110), a motor (120), a bidirectional lead screw (130), a fixing unit (200) and a grinding unit (300); the bottom plate (100) is a rectangular steel plate used to provide support for the entire device; two vertical plates (110) are provided, which are respectively fixed vertically at two ends of the bottom plate (100); the motor (120) is fixed at the top of the left vertical plate (110) and is used to drive the bidirectional lead screw (130) to rotate; the bidirectional lead screw (130) is arranged horizontally, one end of which is connected to the output shaft of the motor (120), and the other end is fixed to the right vertical plate (110) through a bearing seat; The fixing unit (200) is fixed on the bottom plate (100) and is located behind the vertical plate (110), and is used to fix the pipe fitting; two grinding units (300) are provided, arranged in a mirror image, and are respectively slidably connected to the two ends of the bidirectional lead screw (130), and are used to grind and deburr the inner wall of the pipe fitting.

2. A burr chamfering fixture for pipe fittings according to claim 1, characterized in that: The fixing unit (200) comprises a four-axis turntable (210), an oil circuit distributor (220), an oil circuit flange (230), a fixture vertical plate (240), an oil pressure angle cylinder (250), an angle cylinder pressure rod (260), an angle cylinder pressure block (270), an orientation block (280) and an adjustment pressure block (290); the four-axis turntable (210) is mounted on a base plate (100) and is located behind the vertical plate (110) for adjusting the angle at which the pipe is placed; the oil circuit distributor (220) is fixed on the rear side of the four-axis turntable (210) for distributing and transmitting hydraulic oil; the oil circuit flange (230) is connected to the front side of the four-axis turntable (210) for connecting the fixture vertical plate (240); the fixture vertical plate (240) is placed horizontally and fixed on the front side of the oil circuit flange (230) to provide a support surface for the pipe; the oil pressure angle cylinder (250) is provided with two Each of the two corner cylinder pressure rods (260) is fixed on the fixture vertical plate (240) for providing a clamping force; the two corner cylinder pressure rods (260) are provided, one-to-one corresponding to the hydraulic corner cylinder (250), and are respectively fixed on the output end of the corresponding hydraulic corner cylinder (250) for transmitting the clamping force; the two corner cylinder pressure blocks (270) are provided, one-to-one corresponding to the corner cylinder pressure rods (260), and are respectively fixed on the upper end of the corresponding corner cylinder pressure rods (260) for pressing and fixing the pipe fitting under the action of the hydraulic corner cylinder (250); the four directional blocks (280) are provided, all of which are slidably connected in the fixture vertical plate (240) and are located below the pipe fitting, and are used to support the pipe fitting with a semicircular arc groove structure; the four adjustment pressure blocks (290) are provided, each of which is fixed on the bottom of the fixture vertical plate (240) and is located below the corresponding directional block (280), and is used to adjust the position of the directional block (280).

3. A burr chamfering fixture for pipe fittings according to claim 2, characterized in that: The upper surface of the fixture vertical plate (240) is evenly provided with four semi-circular arc grooves for providing a fixing position for the pipe fitting and fitting the pipe fitting structure; the upper end of the orientation block (280) is a circular arc surface structure for supporting the pipe fitting with a semi-circular arc groove structure; the side of the corner cylinder pressure block (270) that is in direct contact with the pipe fitting is made of rubber material for preventing damage to the pipe fitting surface.

4. A burr chamfering fixture for pipe fittings according to claim 3, characterized in that: The grinding unit (300) comprises a moving ring (310), a connecting plate (320), and a grinding assembly (330); the moving ring (310) is slidably connected to the bidirectional lead screw (130) by means of a threaded connection; the connecting plate (320) is fixed to the bottom of the moving ring (310) and is used to connect the grinding assembly (330); two grinding assemblies (330) are provided, arranged front and back, and are respectively fixed to the front and rear ends of the connecting plate (320) and are used to perform synchronous deburring processing on corresponding pipe fittings.

5. A burr chamfering fixture for pipe fittings according to claim 4, characterized in that: The grinding assembly (330) comprises a second motor (331), a fixed cylinder (332), a gear (333), a rotating block (334), a support rod (335) and a grinding head (336); the second motor (331) is fixed on the connecting plate (320) and is used to drive the gear (333) to rotate; the fixed cylinder (332) is fixed on the connecting plate (320) and arranged opposite to the second motor (331); the gear (333) is connected to the output shaft of the second motor (331) The rotating block (334) is connected to the fixed tube (332) and is used to drive the rotating block (334) to rotate; there are four rotating blocks (334) which are evenly arranged along the circumference of the fixed tube (332), are slidably connected in the fixed tube (332) and mesh with the gear (333) for transmission; there are four support rods (335) which are respectively connected to the corresponding rotating blocks (334) in an articulated manner; there are four grinding heads (336) which are rotatably connected to the ends of the corresponding support rods (335) and are used to grind and remove burrs from the pipe fittings.

6. A burr chamfering fixture for pipe fittings according to claim 5, characterized in that: A capsule (340) is also fixed to the end of the output shaft of the second motor (331). The capsule (340) is a circular ring structure and its interior is connected to an external air pump through a pipeline, and is used to adjust the inclination angle of the support rod (335) and thus control the processing angle.

7. A burr chamfering fixture for pipe fittings according to claim 6, characterized in that: The sac body (340) has two parts, namely an air sac (341) and a wax sac (342); the air sac (341) and the wax sac (342) are both fixed to the end of the output shaft of the second motor (331) and arranged on the left and right; the air sac (341) is located on the side away from the pipe fitting, and the wax sac (342) is located on the side close to the pipe fitting.

8. A burr chamfering fixture for pipe fittings according to claim 7, characterized in that: The moving ring (310) is rotatably connected to the connecting plate (320) via a short pin, and a servo motor is fixed to the rear side of the moving ring (310). The short pin is connected to the output shaft of the servo motor and is used to drive the grinding assembly (330) to rotate.

9. A burr chamfering fixture for pipe fittings according to claim 8, characterized in that: The polishing unit (300) further comprises a leveling assembly, wherein four leveling assemblies are provided and correspond one to one with the polishing assemblies (330), and the leveling assembly comprises a straightening plate (350), a pull rope (351), and an iron ball (352); the straightening plate (350) is fixed to the bottom of a vertically placed wax capsule (342) in a detachable manner, and is used to keep the bottom of the wax capsule (342) horizontal during the wax filling and solidification process; four pull ropes (351) are provided and are evenly fixed to the bottom of the straightening plate (350); four iron balls (352) are provided and are respectively fixed to the ends of corresponding pull ropes (351), and are used to straighten the pull ropes (351) through magnetic attraction and make the bottom of the wax capsule (342) parallel to the ground.

10. A burr chamfering fixture for pipe fittings according to claim 9, characterized in that: A horizontal plate (360) is fixed to the opposite surfaces of the two vertical plates (110), and a plurality of grooves corresponding to the positions of the iron balls (352) are provided on the upper surface of the horizontal plate (360). Magnets are provided inside the grooves for adsorbing the iron balls (352) and keeping the aligning plate (350) in a horizontal position.

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