Rotary grinding equipment and method for metal workpiece

Abstract

The invention belongs to the technical field of grinding, and particularly relates to rotary grinding equipment and method for a metal workpiece. Comprising an equipment table; a machining cavity is formed in the equipment table, and a bottom plate grid is installed in the machining cavity and used for dividing the machining cavity into an upper space and a lower space. A three-jaw chuck is installed on the top of the bottom plate grid and located in the upper space. A pipe fitting is clamped and connected in the three-jaw chuck; a double-wall step grinding device is further arranged in the upper space and used for synchronously grinding the inner wall and the outer wall of the pipe fitting at the same time. The double-wall step grinding device comprises a circular base located above the pipe fitting. By means of the double-wall step grinding device, the inner wall and the outer wall of the pipe fitting can be synchronously ground at the same time, the situation that an operator needs to repeatedly grind the pipe fitting is avoided, the pipe fitting can be ground and formed at a time, the needed grinding time of the pipe fitting is shortened, the grinding efficiency of equipment is improved, and therefore the limitation of the equipment in use is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of grinding, and in particular relates to a rotary grinding device and method for metal workpieces. Background Art

[0002] In the process of electromechanical processing, it is often necessary to grind the inner and outer walls of tubular metal workpieces to improve the production quality and performance of the workpieces. Existing rotary grinding equipment for metal workpieces usually fixes the workpiece on a machine tool to perform grinding operations on the rotating surface of the workpiece when in use. However, the existing equipment cannot simultaneously grind the inner and outer walls of the pipe fittings, resulting in low efficiency of the equipment during grinding, thereby reinforcing the limitations of the equipment during use. Summary of the invention

[0003] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a rotary grinding device and method for metal workpieces, which effectively solves the problems in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a rotary grinding device for metal workpieces, comprising an equipment table; a processing cavity is provided in the equipment table, and a bottom plate grid is installed in the processing cavity, and the bottom plate grid is used to divide the processing cavity into an upper space and a lower space; a three-jaw chuck is installed on the top of the bottom plate grid, and the three-jaw chuck is located in the upper space; a pipe fitting is clamped and connected in the three-jaw chuck; a double-wall step grinding device is also provided in the upper space, and the double-wall step grinding device is used to simultaneously grind the inner and outer walls of the pipe fitting; the double-wall step grinding device includes a circular base located above the pipe fitting, and the center of the circular base and the pipe fitting are coaxial; a transverse displacement structure is also provided in the processing cavity, and the transverse displacement structure is used to control the grinding position of the double-wall step grinding device on the pipe fitting.

[0005] Preferably, a driving motor is also provided at the center of the top of the circular base; the top of the driving shaft is installed at the bottom of the circular base, and the top of the driving shaft is connected to the output end of the driving motor; the bottom end of the driving shaft is connected to a bearing, and the bearing is connected to a driving square plate; an active shaft is provided on the side of the driving square plate close to the pipe fitting, and the bottom end of the active shaft is connected to a first grinding wheel, and the first grinding wheel is used to grind the inner wall of the pipe fitting; the top of the active shaft is connected to the bearing; the first connecting frame is connected to the four sides of the top of the driving square plate, and the first connecting frame is arranged at the side wall of the circular base.

[0006] Preferably, two symmetrical guide slide columns are provided on the side of the driving square plate, and a guide slider is slidably connected to the guide slide column, and the opposite surfaces of the two guide sliders are commonly connected to a driving base, and a driven rotating shaft is connected through the top of the driving base, and a second grinding wheel is installed at the bottom end of the driven rotating shaft, and the second grinding wheel is used to grind the outer wall of the pipe fitting; a first pulley is connected to the top of the driven rotating shaft, and a tensioning transmission belt is connected to the first pulley; a second pulley is connected to the driving rotating shaft, and the second pulley is connected to an end of the tensioning transmission belt away from the first pulley; the tensioning transmission belt slidably cooperates with the second pulley and the first pulley.

[0007] Preferably, the transverse displacement structure includes an X-axis slide rail arranged on the top surface of the processing cavity, the X-axis slide rail is slidably connected with a transverse slider, the transverse slider is installed with a Y-axis slide rail, and the Y-axis slide rail and the X-axis slide rail are vertically arranged; the Y-axis slide rail is slidably connected with a vertical slider, and the side of the vertical slider away from the X-axis slide rail is connected with a telescopic cylinder.

[0008] Preferably, a fixing base block is installed on the output end of the telescopic cylinder, and a plurality of second connecting frames are installed on the side wall of the fixing base block, and the plurality of second connecting frames are commonly connected to the outer side wall of the circular base; a liquid tank is also installed on the telescopic cylinder, and a circulating liquid spraying unit is provided on the liquid tank.

[0009] Preferably, a variable pitch stop module is also provided on the guide slider; the variable pitch stop module includes a guide spring mounted on the guide slide column, one end of the guide spring is fixedly connected to the guide slider, and the other end is connected to a guide limit block, and the guide limit block is fixedly connected to the end of the guide slide column away from the driving square plate; a plurality of locking sockets are penetrated through the opposite surfaces of the two guide slide columns.

[0010] Preferably, the top and bottom of the guide slider are provided with a limit base, and the side of the limit base passes through the limited sliding column, and the limit sliding column slides with the limit base; the ends of the two limit sliding columns away from the driven rotating shaft are commonly connected to the limited horizontal plate, and the side of the limit horizontal plate away from the driven rotating shaft is provided with a pull ring; the side of the limit horizontal plate away from the pull ring is provided with a locking plug, and the locking plug passes through the side of the guide slider away from the driven rotating shaft and is connected to one of the locking plug holes; a limit spring is sleeved on the limit sliding column, one end of the limit spring is fixedly connected to the limit base, and the other end is connected to the limited round block, and the limit round block is fixedly installed on the end of the limit sliding column close to the driven rotating shaft.

[0011] Preferably, a limited rotation and anti-sway mechanism is provided on both the second grinding wheel and the first grinding wheel; the limited rotation and anti-sway mechanism includes two groups of positioning swivels, which are respectively installed on the top of the second grinding wheel and the first grinding wheel; the positioning swivel is composed of two circular rings, and the inner and outer diameters of the upper circular ring are equidistantly larger than those of the lower circular ring; a plurality of positioning swivel blocks are nested on the positioning swivel, and the positioning swivel blocks and the positioning swivel are slidably fitted; the tops of the plurality of positioning swivel blocks are commonly connected with an auxiliary movable fixed ring; the auxiliary movable fixed ring at the first grinding wheel is arranged on the driving square plate; the auxiliary movable fixed ring at the second grinding wheel is arranged on the driving base.

[0012] Preferably, the circulating spray unit includes a liquid extraction hose installed on the liquid tank, the input end of the liquid extraction hose passes through the top of the bottom plate grille and is located in the lower space; the output end of the liquid extraction hose is connected to the liquid tank; two input ends of the spray hose are installed on the liquid tank; the output ends of the two spray hoses are respectively directed toward the grinding parts of the first grinding wheel and the second grinding wheel side walls and the pipe fittings; a dispensing hose is installed on the spray hose, and the output end of the dispensing hose is directed toward the sliding part of the positioning rotating block and the positioning rotating ring.

[0013] The present invention also provides a rotary grinding method for a metal workpiece, comprising the following steps:

[0014] S1. Operate the double-wall step grinding device to grind the inner and outer walls of the pipe fittings simultaneously;

[0015] S2. Using a transverse displacement structure, the double-wall step grinder can be located at different positions of the pipe for grinding operations;

[0016] S3. The grinding process is automatically carried out in the processing chamber at the equipment table to prevent the debris generated during grinding from affecting the operation of the equipment or the health of the staff.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] (1) Start the driving motor so that its output end drives the driving shaft to rotate, and under the action of the bearing, drives the active shaft on the driving square plate to rotate, so that the first grinding wheel on it rotates, so that it is used to grind the inner wall of the pipe fitting; at the same time, the driving shaft will drive the second pulley to rotate when rotating, so that it drives the first pulley on the driven shaft to rotate under the action of the tensioning transmission belt, so that the second grinding wheel on the driven shaft rotates, so that it is used to grind the outer wall of the pipe fitting, so that the first grinding wheel and the second grinding wheel rotate synchronously, and under the action of the transverse displacement structure, the first grinding wheel and the second grinding wheel are driven to move, and both are at the same height, so that the first grinding wheel and the second grinding wheel can grind the inner wall and the outer wall of the pipe fitting synchronously at the same time, avoiding the need for operators to repeat the grinding steps on the pipe fitting, that is, the pipe fitting can be polished and formed at one time, reducing the time required for grinding the pipe fitting, improving the grinding efficiency of the equipment, and thus reducing the limitations of the equipment when in use;

[0019] (2) When the second grinding wheel and the first grinding wheel are grinding the side wall of the pipe fitting, the second grinding wheel and the first grinding wheel rotate and drive the positioning swivel to rotate, so that the positioning swivel is limited in a plurality of positioning swivel blocks, so that the rotation of the second grinding wheel and the first grinding wheel can be limited, so as to avoid the vibration generated when the second grinding wheel and the first grinding wheel rotate at high speed or when grinding the side wall of the pipe fitting, which may cause the second grinding wheel and the first grinding wheel to be dislocated, thereby improving the stability of the second grinding wheel and the first grinding wheel when rotating; at the same time, the grinding effect of the second grinding wheel and the first grinding wheel on the pipe fitting is improved;

[0020] (3) The driving base is movably arranged. By moving the driving base, the driving base is moved on the upper limit of the guide slide column through the guide slider, so that the guide spring is in a buffering state, thereby adjusting the position of the second grinding wheel on the driving base, so that the spacing between the second grinding wheel and the first grinding wheel is adjustable. In addition, with the cooperation of the transverse displacement structure, the second grinding wheel and the first grinding wheel can grind pipes of different thicknesses, that is, they can process pipes of different diameters, thereby reducing the limitations of the equipment during use and improving the grinding effect of the equipment;

[0021] (4) By operating the horizontal slider, the vertical slider and the telescopic cylinder, the first grinding wheel and the second grinding wheel can grind the pipe fitting at different positions and heights, and the grinding position and direction are also variable. The combination of the X-axis slide rail and the Y-axis slide rail can enable the grinding wheel to grind around the side wall of the pipe wall, and the grinding process is automated, thereby improving the grinding efficiency of the equipment and reducing the workload of the staff;

[0022] (5) A spray hose is used so that the output ends of the two spray hoses spray coolant on the grinding points of the first grinding wheel, the second grinding wheel side wall and the pipe fitting, so as to reduce the temperature during grinding and improve the grinding efficiency of the equipment; at the same time, it can prevent the debris generated during grinding from splashing everywhere due to inertia and causing damage to the pipe fittings, thereby improving the grinding quality of the equipment for the workpiece; at the same time, a dispensing hose is also provided on the spray hose, and the coolant sprayed from its output end is directed to the sliding point of the positioning block and the positioning swivel, which is not only used to reduce the heat generated by the friction when the two rotate, but also has a certain lubrication effect, thereby increasing the positioning block and the positioning swivel. The smoothness during rotation improves the smoothness and precision of the grinding wheel, thereby improving the grinding effect of the equipment; at the same time, when the coolant acts on the grinding or sliding part, the liquid will be thrown out due to inertia during rotation and act on the inner wall of the processing cavity and fall on the bottom plate grid, thereby entering the lower space for collecting the used coolant. The input end of the liquid extraction hose is in the lower space, so that the used coolant can be refilled into the liquid tank for reuse, avoiding the waste of resources and improving the environmental protection effect of the equipment during use; it is used to prompt the use life of the equipment and reduce the limitations of the equipment during use;

[0023] (6) Pull the pull ring outward so that the limit horizontal plate on it slides on the limit base through the limit sliding column, so that the limit spring is in a buffer state, and then the locking plug on the limit horizontal plate is away from the guide slider and no longer contacts the locking socket, thereby releasing the limit setting of the guide slider, so that the driving base can move normally, so that the first grinding wheel and the second grinding wheel can be adjusted normally; when the spacing adjustment between the two is completed, by loosening the limit horizontal plate, the locking plug is driven to reset and move under the reset of the limit spring, so that it passes through the guide slider and is connected to one of the locking sockets, thereby limiting the guide slider to the current position, avoiding the second grinding wheel from being dislocated when grinding the pipe fitting, improving the safety and stability of the second grinding wheel when in use, and improving the grinding effect of the equipment; at the same time, because the guide slider is limited, the guide spring in the buffer state cannot be reset, and the elastic force brought about acts on the guide slider, thereby strengthening the friction between the locking plug and the locking socket, avoiding the locking plug from being dislocated due to non-human factors during use, and improving the use effect of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0025] In the attached picture:

[0026] Figure 1 This is one of the overall structural schematic diagrams of the present invention;

[0027] Figure 2 This is the second schematic diagram of the overall structure of the present invention;

[0028] Figure 3 It is a schematic diagram of the structure of the second grinding wheel of the present invention;

[0029] Figure 4 It is a schematic diagram of the structure of the first grinding wheel of the present invention;

[0030] Figure 5 This is a schematic diagram of the internal structure of the processing cavity of the present invention;

[0031] Figure 6 It is a schematic diagram of the structure of the telescopic cylinder of the present invention;

[0032] Figure 7 This is an exploded view of the positioning swivel of the present invention;

[0033] Figure 8 This is a schematic diagram of the locking socket structure of the present invention;

[0034] Fig. 9 It is a cross-sectional view of the liquid tank of the present invention;

[0035] Fig.10 This is a cross-sectional exploded view of the guide slider of the present invention;

[0036] In the figure: 1, equipment table; 2, processing cavity; 3, bottom plate grid; 4, three-jaw chuck; 5, pipe fittings; 6, round base; 7, driving motor; 8, driving shaft; 9, driving square plate; 10, driving shaft; 11, first grinding wheel; 12, first connecting frame; 13, guide slide column; 14, guide slide block; 15, driving base; 16, driven shaft; 17, second grinding wheel; 18, first pulley; 19, tensioning drive belt; 20, second pulley; 21, X-axis slide rail; 22, horizontal slide block; 23 , Y-axis slide rail; 24, vertical slider; 25, telescopic cylinder; 26, fixed base block; 27, second connecting frame; 28, liquid tank; 29, guide spring; 30, guide limit block; 31, locking socket; 32, limit base; 33, limit slide column; 34, limit horizontal plate; 35, pull ring; 36, locking plug; 37, limit spring; 38, limit round block; 39, positioning swivel; 40, positioning swivel block; 41, auxiliary fixed ring; 42, liquid extraction hose; 43, spray hose; 44, packaging hose. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0038] Example, by Figures 1 to 10 The present invention comprises an equipment table 1; a processing cavity 2 is arranged in the equipment table 1, a bottom plate grille 3 is installed in the processing cavity 2, and the bottom plate grille 3 is used to separate the processing cavity 2 into an upper space and a lower space; a three-jaw chuck 4 is installed on the top of the bottom plate grille 3, and the three-jaw chuck 4 is located in the upper space; a pipe 5 is clamped and connected in the three-jaw chuck 4; a double-wall step grinding device is also arranged in the upper space, and the double-wall step grinding device is used to grind the inner and outer walls of the pipe 5 synchronously at the same time; the double-wall step grinding device comprises a groove located above the pipe 5 The circular base 6 is coaxial with the center of the circular base 6 and the pipe 5; a transverse displacement structure is also provided in the processing cavity 2, and the transverse displacement structure is used to control the grinding position of the double-wall step grinding device on the pipe 5; a driving motor 7 is also provided at the center of the top of the circular base 6; the top of the driving shaft 8 is installed at the bottom of the circular base 6, and the top of the driving shaft 8 is connected to the output end of the driving motor 7; the bottom end of the driving shaft 8 is connected to a bearing, and a driving square plate 9 is connected to the bearing; the driving square plate 9 is close to the pipe A driving shaft 10 is provided on one side of the driving shaft 10, and a first grinding wheel 11 is connected to the bottom end of the driving shaft 10, and the first grinding wheel 11 is used to grind the inner wall of the pipe 5; the top of the driving shaft 10 is connected to the bearing; the top of the driving square plate 9 is connected to a first connecting frame 12 around the top, and the first connecting frame 12 is arranged on the side wall of the circular base 6; two symmetrical guide slides 13 are provided on the side of the driving square plate 9, and a guide slider 14 is slidably connected to the guide slide 13, and the opposite surfaces of the two guide sliders 14 are commonly connected to the driving base 15, a driven shaft 16 is connected through the top of the driving base 15, and a second grinding wheel 17 is installed at the bottom of the driven shaft 16, and the second grinding wheel 17 is used to grind the outer wall of the pipe 5; the top of the driven shaft 16 is connected to a first pulley 18, and the first pulley 18 is connected to a tensioning belt 19; the driving shaft 8 is connected to a second pulley 20, and the second pulley 20 is connected to an end of the tensioning belt 19 away from the first pulley 18; the tensioning belt 19 is slidably matched with the second pulley 20 and the first pulley 18;

[0039] By starting the driving motor 7, the output end of the driving motor drives the driving shaft 8 to rotate, and the driving shaft 10 on the driving square plate 9 is driven to rotate under the action of the bearing, so that the first grinding wheel 11 on the driving shaft rotates, so that it is used to grind the inner wall of the pipe 5; at the same time, the driving shaft 8 will drive the second pulley 20 to rotate when rotating, so that it drives the first pulley 18 on the driven shaft 16 to rotate under the action of the tensioning transmission belt 19, so that the second grinding wheel 17 on the driven shaft 16 rotates, so that it is used to grind the outer wall of the pipe 5, so that the first grinding wheel 11 and the second grinding wheel 17 rotate synchronously, and the first grinding wheel 11 and the second grinding wheel 17 are driven to move under the action of the transverse displacement structure, and both are at the same height, so that the first grinding wheel 11 and the second grinding wheel 17 can grind the inner wall and the outer wall of the pipe 5 synchronously at the same time, avoiding the need for the operator to repeat the grinding steps on the pipe 5, that is, the pipe 5 can be polished and formed at one time, reducing the time required for grinding the pipe 5, improving the grinding efficiency of the equipment, and thus reducing the limitations of the equipment when in use.

[0040] The transverse displacement structural member of the present embodiment comprises an X-axis slide rail 21 arranged on the inner top surface of the processing cavity 2, a transverse slider 22 is slidably connected to the X-axis slide rail 21, a Y-axis slide rail 23 is installed on the transverse slider 22, and the Y-axis slide rail 23 and the X-axis slide rail 21 are vertically arranged; a vertical slider 24 is slidably connected to the Y-axis slide rail 23, and a telescopic cylinder 25 is connected to the side of the vertical slider 24 away from the X-axis slide rail 21; a fixed base block 26 is installed on the output end of the telescopic cylinder 25, and a plurality of second connecting frames 27 are installed on the side wall of the fixed base block 26, and the plurality of second connecting frames 27 are connected to the outer side wall of the circular base 6; a liquid tank 28 is also installed on the telescopic cylinder 25, and a circulating liquid spraying unit is arranged on the liquid tank 28;

[0041] By operating the horizontal slider 22, the vertical slider 24 and the telescopic cylinder 25, the first grinding wheel 11 and the second grinding wheel 17 can grind the pipe 5 at different positions and heights, and the grinding position and direction are also variable. The combination of the X-axis slide rail 21 and the Y-axis slide rail 23 allows the grinding wheel to grind around the side wall of the pipe wall 5, and the grinding process is automated, which improves the grinding efficiency of the equipment and reduces the work intensity of the staff.

[0042] The guide slider 14 of this embodiment is also provided with a variable pitch stop module; the variable pitch stop module includes a guide spring 29 sleeved on the guide slide post 13, one end of the guide spring 29 is fixedly connected to the guide slider 14, and the other end is connected to a guide limit block 30, and the guide limit block 30 is fixedly connected to the end of the guide slide post 13 away from the driving square plate 9; a plurality of locking sockets 31 are penetrated on the opposite surfaces of the two guide slide posts 13; the top and bottom of the guide slider 14 are both provided with a limit base 32, and the side of the limit base 32 is penetrated and connected to a limit slide post 33, and the limit slide post 33 is slidably matched with the limit base 32; One end of the two limit slides 33 away from the driven shaft 16 is commonly connected to the limit horizontal plate 34, and a pull ring 35 is provided on the side of the limit horizontal plate 34 away from the driven shaft 16; a locking plug 36 is provided on the side of the limit horizontal plate 34 away from the pull ring 35, and the locking plug 36 passes through the side of the guide slider 14 away from the driven shaft 16 and is connected to one of the locking plug holes 31; a limit spring 37 is sleeved on the limit slide 33, one end of the limit spring 37 is fixedly connected to the limit base 32, and the other end is connected to the limit round block 38, and the limit round block 38 is fixedly installed on the end of the limit slide 33 close to the driven shaft 16;

[0043] Since the driving base 15 is movably arranged, the driving base 15 is moved so that it moves to the upper limit position on the guide slide column 13 through the guide slider 14, so that the guide spring 29 is in a buffering state, so that the position of the second grinding wheel 17 on the driving base 15 can be adjusted, so that the spacing between it and the first grinding wheel 11 is adjustable, and with the cooperation of the transverse displacement structure, the second grinding wheel 17 and the first grinding wheel 11 can grind the pipe fittings 5 ​​of different thicknesses, that is, they can process the pipe fittings 5 ​​of different diameters, which reduces the limitations of the equipment when in use and improves the grinding effect of the equipment;

[0044] When it is necessary to adjust the spacing between the first grinding wheel 11 and the second grinding wheel 17, the pull ring 35 is pulled outward so that the limit plate 34 on it slides on the limit base 32 through the limit slide post 33, so that the limit spring 37 is in a buffering state, and then the locking plug 36 on the limit plate 34 is away from the guide slider 14 and no longer contacts the locking plug hole 31, thereby releasing the limit setting of the guide slider 14, so that the driving base 15 can move normally, so that the first grinding wheel 11 and the second grinding wheel 17 can be adjusted normally; when the spacing between the two is adjusted, the limit plate 34 is loosened, and the locking plug 36 is driven under the reset of the limit spring 37. 6 is reset and moved to pass through the guide slider 14 and connect with one of the locking sockets 31, so that the guide slider 14 is limited to the current position, avoiding the second grinding wheel 17 from being dislocated when grinding the pipe 5, improving the safety and stability of the second grinding wheel 17 when in use, so that the grinding effect of the equipment is improved; at the same time, since the guide slider 14 is limited, the guide spring 29 in the buffer state cannot be reset, and the elastic force brought about acts on the guide slider 14, thereby strengthening the friction between the locking plug 36 and the locking socket 31, avoiding the locking plug 36 from being dislocated due to non-human factors when in use, and improving the use effect of the equipment.

[0045] The second grinding wheel 17 and the first grinding wheel 11 of this embodiment are both provided with a limited rotation anti-sway mechanism; the limited rotation anti-sway mechanism comprises two sets of positioning swivel rings 39, which are respectively mounted on the top of the second grinding wheel 17 and the first grinding wheel 11; the positioning swivel ring 39 is composed of two circular rings, and the inner and outer diameters of the upper circular ring are equidistantly larger than those of the lower circular ring; a plurality of positioning swivel blocks 40 are nested on the positioning swivel ring 39, and the positioning swivel blocks 40 and the positioning swivel ring 39 are slidably matched; the tops of the plurality of positioning swivel blocks 40 are commonly connected with an auxiliary movable fixed ring 41; the auxiliary movable fixed ring 41 at the first grinding wheel 11 is arranged on the driving square plate 9; the auxiliary movable fixed ring 41 at the second grinding wheel 17 is arranged on the driving base 15;

[0046] When the second grinding wheel 17 and the first grinding wheel 11 are grinding the side wall of the pipe 5, the second grinding wheel 17 and the first grinding wheel 11 rotate and drive the positioning swivel 39 to rotate, so that it rotates within a limited position in a plurality of positioning swivel blocks 40, so that the rotation of the second grinding wheel 17 and the first grinding wheel 11 can be limited, so as to avoid the vibration generated when the second grinding wheel 17 and the first grinding wheel 11 rotate at high speed or grind the side wall of the pipe 5, which may cause the second grinding wheel 17 and the first grinding wheel 11 to be dislocated, thereby improving the stability of the second grinding wheel 17 and the first grinding wheel 11 when rotating; at the same time, the grinding effect of the second grinding wheel 17 and the first grinding wheel 11 on the pipe 5 is improved.

[0047] The circulating liquid spraying unit of this embodiment includes a liquid extraction hose 42 installed on the liquid tank 28, the input end of the liquid extraction hose 42 passes through the top of the bottom plate grille 3 and is located in the lower space; the output end of the liquid extraction hose 42 is connected to the liquid tank 28; the input ends of two spray hoses 43 are installed on the liquid tank 28; the output ends of the two spray hoses 43 are respectively directed to the grinding position of the side walls of the first grinding wheel 11 and the second grinding wheel 17 and the pipe 5; the spray hose 43 is installed with a dispensing hose 44, and the output end of the dispensing hose 44 is directed to the sliding position of the positioning rotating block 40 and the positioning rotating ring 39;

[0048] When the double-wall step grinding device is synchronously grinding the inner and outer walls of the pipe 5, by using the spray hose 43, the output ends of the two spray hoses 43 spray coolant on the grinding points of the first grinding wheel 11 and the second grinding wheel 17 and the pipe 5, so as to reduce the temperature during grinding and improve the grinding efficiency of the equipment; at the same time, it can prevent the debris generated during grinding from splashing everywhere due to inertia and causing damage to the pipe 5, thereby improving the grinding quality of the equipment for the workpiece; at the same time, a dispensing hose 44 is also provided on the spray hose 43, and the coolant sprayed from its output end is directed to the sliding part of the positioning rotating block 40 and the positioning rotating ring 39, which is not only used to reduce the heat generated by the friction when the two rotate, but also has a certain lubrication effect. , which can increase the smoothness of the positioning rotating block 40 and the positioning rotating ring 39 during rotation, so that the smoothness and precision of the grinding wheel during rotation can be improved, thereby improving the grinding effect of the equipment; at the same time, when the coolant acts on the grinding or sliding part, the liquid will be thrown out due to inertia during rotation and act on the inner wall of the processing cavity 2 and will fall on the bottom plate grid 3, thereby entering the lower space for collecting the used coolant, and the input end of the liquid extraction hose 42 is in the lower space, so that the used coolant can be refilled into the liquid tank 28 for reuse, avoiding waste of resources and improving the environmental protection effect of the equipment during use; it is used to prompt the use life of the equipment and reduce the limitations of the equipment during use.

[0049] The present invention also provides a rotary grinding method for a metal workpiece, comprising the following steps:

[0050] S1, operating the double-wall step grinding device to grind the inner and outer walls of the pipe 5 simultaneously;

[0051] S2. Using a transverse displacement structure, the double-wall step grinder is located at different positions of the pipe 5 for grinding operation;

[0052] S3. The grinding process is automatically performed in the processing chamber 2 at the equipment table 1, so as to prevent the debris generated during grinding from affecting the operation of the equipment or the health of the staff.

[0053] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rotary grinding device for metal workpieces, comprising a device table (1); characterized in that: The equipment platform (1) is provided with a processing cavity (2), and a bottom plate grille (3) is installed in the processing cavity (2), and the bottom plate grille (3) is used to divide the processing cavity (2) into an upper space and a lower space; a three-jaw chuck (4) is installed on the top of the bottom plate grille (3), and the three-jaw chuck (4) is located in the upper space; a pipe (5) is clamped and connected in the three-jaw chuck (4); a double-wall step grinding device is also provided in the upper space, and the double-wall step grinding device is used to simultaneously grind the inner and outer walls of the pipe (5); the double-wall step grinding device includes a circular base (6) located above the pipe (5), and the circular base (6) and the pipe (5) are coaxial; a transverse displacement structure is also provided in the processing cavity (2), and the transverse displacement structure is used to control the grinding position of the double-wall step grinding device on the pipe (5).

2. A rotary grinding device for metal workpieces according to claim 1, characterized in that: A driving motor (7) is also provided at the center of the top of the circular base (6); the top of a driving shaft (8) is installed at the bottom of the circular base (6), and the top of the driving shaft (8) is connected to the output end of the driving motor (7); the bottom end of the driving shaft (8) is connected to a bearing, and the bearing is connected to a driving square plate (9); a driving shaft (10) is provided on the side of the driving square plate (9) close to the pipe (5), and the bottom end of the driving shaft (10) is connected to a first grinding wheel (11), and the first grinding wheel (11) is used to grind the inner wall of the pipe (5); the top of the driving shaft (10) is connected to the bearing; the top of the driving square plate (9) is connected to a first connecting frame (12) around the top, and the first connecting frame (12) is arranged on the side wall of the circular base (6).

3. A rotary grinding device for metal workpieces according to claim 2, characterized in that: The side of the driving square plate (9) is provided with two symmetrical guide slides (13), and a guide slider (14) is slidably connected to the guide slide (13), and the opposite surfaces of the two guide sliders (14) are commonly connected to a driving base (15), and a driven shaft (16) is connected through the top of the driving base (15), and a second grinding wheel (17) is installed at the bottom end of the driven shaft (16), and the second grinding wheel (17) is used for grinding the outer wall of the pipe (5); the top end of the driven shaft (16) is connected to a first pulley (18), and the first pulley (18) is connected to a tensioning transmission belt (19); the driving shaft (8) is connected to a second pulley (20), and the second pulley (20) is connected to an end of the tensioning transmission belt (19) away from the first pulley (18); the tensioning transmission belt (19) is slidably matched with the second pulley (20) and the first pulley (18).

4. A rotary grinding device for metal workpieces according to claim 1, characterized in that: The transverse displacement structural component comprises an X-axis slide rail (21) arranged on the top surface of the processing cavity (2); a transverse slider (22) is slidably connected to the X-axis slide rail (21); a Y-axis slide rail (23) is installed on the transverse slider (22); the Y-axis slide rail (23) and the X-axis slide rail (21) are vertically arranged; a vertical slider (24) is slidably connected to the Y-axis slide rail (23); a telescopic cylinder (25) is connected to the side of the vertical slider (24) away from the X-axis slide rail (21).

5. A rotary grinding device for metal workpieces according to claim 4, characterized in that: A fixing base block (26) is installed on the output end of the telescopic cylinder (25), and a plurality of second connecting frames (27) are installed on the side wall of the fixing base block (26), and the plurality of second connecting frames (27) are commonly connected to the outer side wall of the circular base (6); a liquid tank (28) is also installed on the telescopic cylinder (25), and a circulating liquid spraying unit is arranged on the liquid tank (28).

6. A rotary grinding device for metal workpieces according to claim 3, characterized in that: The guide slider (14) is also provided with a variable pitch stop module; the variable pitch stop module comprises a guide spring (29) sleeved on the guide slide column (13); one end of the guide spring (29) is fixedly connected to the guide slider (14); the other end is connected to a guide limit block (30); the guide limit block (30) is fixedly connected to an end of the guide slide column (13) away from the driving square plate (9); and a plurality of locking holes (31) are penetrated through the opposite surfaces of the two guide slide columns (13).

7. A rotary grinding device for metal workpieces according to claim 6, characterized in that: The top and bottom of the guide slider (14) are both provided with a limit base (32), and the side of the limit base (32) is connected with a limit slide column (33), and the limit slide column (33) and the limit base (32) are slidably matched; the ends of the two limit slide columns (33) away from the driven shaft (16) are commonly connected to a limit horizontal plate (34), and the side of the limit horizontal plate (34) away from the driven shaft (16) is provided with a pull ring (35); the limit horizontal plate (34) away from the pull ring (3 5), a locking plug (36) is provided on one side of the guide slider (14) and the locking plug (36) passes through the side of the guide slider (14) away from the driven shaft (16) and is connected to one of the locking plug holes (31); a limiting spring (37) is sleeved on the limiting slide post (33), one end of the limiting spring (37) is fixedly connected to the limiting base (32), and the other end is connected to a limiting round block (38), and the limiting round block (38) is fixedly installed on one end of the limiting slide post (33) close to the driven shaft (16).

8. The rotary grinding device for metal workpieces according to claim 3, characterized in that: The second grinding wheel (17) and the first grinding wheel (11) are both provided with a limited rotation anti-sway mechanism; the limited rotation anti-sway mechanism comprises two groups of positioning swivel rings (39), which are respectively mounted on the top of the second grinding wheel (17) and the first grinding wheel (11); the positioning swivel ring (39) is composed of two circular rings, and the inner and outer diameters of the upper circular ring are equidistantly larger than those of the lower circular ring; a plurality of positioning swivel blocks (40) are nested on the positioning swivel ring (39), and the positioning swivel blocks (40) and the positioning swivel ring (39) are slidably matched; the tops of the plurality of positioning swivel blocks (40) are commonly connected with an auxiliary fixed ring (41); the auxiliary fixed ring (41) at the first grinding wheel (11) is arranged on the driving square plate (9); the auxiliary fixed ring (41) at the second grinding wheel (17) is arranged on the driving base (15).

9. The rotary grinding device for metal workpieces according to claim 5, characterized in that: The circulating spray unit comprises a liquid extraction hose (42) installed on the liquid tank (28), the input end of the liquid extraction hose (42) passes through the top of the bottom plate grille (3) and is located in the lower space; the output end of the liquid extraction hose (42) is connected to the liquid tank (28); the input ends of two spray hoses (43) are installed on the liquid tank (28); the output ends of the two spray hoses (43) are respectively oriented to the grinding positions of the side walls of the first grinding wheel (11) and the second grinding wheel (17) and the pipe fitting (5); a dispensing hose (44) is installed on the spray hose (43), and the output end of the dispensing hose (44) is oriented to the sliding position of the positioning rotating block (40) and the positioning rotating ring (39).

10. A rotary grinding method for a metal workpiece, using the rotary grinding device for a metal workpiece as claimed in claim 1, characterized in that: Includes steps: S1, operating a double-wall grinding device to grind the inner and outer walls of the pipe (5) simultaneously; S2, using a transverse displacement structure to enable the double-wall step grinder to be located at different positions of the pipe (5) for grinding; S3. The grinding process is automatically carried out in the processing chamber (2) at the equipment table (1), so as to prevent the debris generated during grinding from affecting the operation of the equipment or the health of the staff.

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