Tubular workpiece port grinding machine

Abstract

The utility model discloses a tubular workpiece port grinding machine, and relates to the technical field of machining. The polishing device comprises a polishing table, a polishing assembly and a fixing assembly. The grinding assembly comprises an L-shaped column, a lifting block, a grinding disc, a first sliding block and a grinding head. The fixing assembly comprises a movable plate, a movable frame, a fixed frame and a rotary drum. According to the tubular workpiece polishing device, the first sliding block is driven to move through the mounting rod and the threaded rod in the polishing assembly, the distance between the polishing heads is adjusted, and the inner wall and the outer wall of end openings of tubular workpieces with different thicknesses can be conveniently polished at the same time; the problem that the outer wall and the inner wall of an end opening of a tubular workpiece are inconvenient to polish at the same time in the prior art is solved, a moving frame in a fixing assembly drives a moving plate to reciprocate in the longitudinal direction, the tubular workpiece is driven to reciprocate in the longitudinal direction, and the tubular workpiece is driven to rotate through a rotating cylinder; the problem that an end opening of a square pipe is not convenient to polish in the prior art is solved.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical processing technology, and in particular relates to a grinding machine for the end of a tubular workpiece. Background Technology

[0002] Machining refers to the process of changing the shape, size or properties of a workpiece through a mechanical device. According to the difference in processing method, it can be divided into cutting processing and pressure processing. Among them, grinding is one of the most common processing methods in cutting processing. In order to facilitate grinding of various workpieces, grinding machines are usually used.

[0003] A polishing and grinding machine for the inner wall weld of a tubular workpiece is disclosed in the existing document with publication number CN220007150U. It includes a workpiece clamping assembly, a workpiece moving assembly, a grinding assembly and a grinding moving assembly. This utility model can realize automated operation. By manually adjusting the pallet displacement and controlling the controller to drive the pressure plate cylinder, the pressure plate of the tubular workpiece is pressed down to clamp the tubular workpiece and realize the automatic grinding of the inner wall weld of the tubular workpiece.

[0004] However, it still has the following drawbacks in practical use:

[0005] 1. The polishing and grinding machine mentioned above has a grinding drive motor and a grinding head. The grinding drive motor drives the grinding head to grind the inner wall of the port of the tubular workpiece. However, it is not convenient to grind the outer wall of the port of the tubular workpiece during use, and its functionality is limited.

[0006] 2. The polishing and grinding machine mentioned above has a grinding drive motor and a grinding head. The grinding drive motor drives the grinding head to grind the inner wall of the end of the tubular workpiece. However, in use, it can only grind round tubular workpieces and is not convenient for grinding flat tubular workpieces, so its application range is small.

[0007] To address these issues, we provide a grinding machine for the ends of tubular workpieces. Utility Model Content

[0008] The purpose of this invention is to provide a grinding machine for the ends of tubular workpieces. The first slider is moved by the mounting rod and threaded rod in the grinding assembly, adjusting the distance between the grinding heads. This facilitates simultaneous grinding of the inner and outer walls of the ends of tubular workpieces of different thicknesses, solving the problem of inconvenience in simultaneously grinding the outer and inner walls of the ends of tubular workpieces. The moving frame in the fixed assembly drives the moving plate to reciprocate longitudinally, causing the tubular workpiece to reciprocate longitudinally. The rotating drum further drives the tubular workpiece to rotate, solving the problem of inconvenience in grinding the ends of square tubes.

[0009] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0010] This utility model is a grinding machine for the end of a tubular workpiece, including a grinding table, a grinding assembly and a fixing assembly;

[0011] A fixing plate is fixedly connected to the center of the bottom of the grinding table;

[0012] The grinding assembly includes an L-shaped column, a lifting block, a grinding disc, a first slider, and a grinding head. The horizontal support arms of the L-shaped column are fixedly connected to the outer walls of both sides of the grinding table. The lifting block is slidably connected to the vertical support arm of the L-shaped column. The grinding disc is movably connected to the side of the lifting block closest to the grinding table. A first groove is vertically opened on the upper part of the outer wall of the grinding disc. The first slider is slidably connected to the inner side of the first groove. An installation rod passes through the top of the first groove. A threaded rod is threaded inside the installation rod. A first knob is fixedly connected to the end of the threaded rod located outside the first groove. The end of the threaded rod located inside the first groove is rotatably connected to the top of the first slider. A first drive motor is fixedly connected to the center of the outer wall of the grinding disc and the first slider on the side away from the grinding table. The grinding head is sleeved on the output shaft of the first drive motor.

[0013] The fixed assembly includes a movable plate, a movable frame, a fixed frame, and a rotating cylinder. The movable plate is movably connected to the inside of the grinding table. Connecting plates are fixedly connected to the front and rear ends of the lower surface of the movable plate. The movable frame is fixedly connected between the connecting plates. Racks are fixedly connected to the inner walls of both sides of the movable frame. A half gear is rotatably connected to the center of the inside of the movable frame. The gears and half gears are meshed together. Movable frames are slidably connected to both sides of the upper surface of the movable plate. The fixed frame is movably connected to the top of the movable frames. An mounting cylinder is fixedly connected to the top of the movable plate. The rotating cylinder is rotatably fitted inside the mounting cylinder.

[0014] A further feature of this invention is that a first hydraulic cylinder is fixedly connected to the top of the vertical support arm of the L-shaped column, and the piston shaft of the first hydraulic cylinder moves through the top of the vertical support arm of the L-shaped column and is fixedly connected to the top of the lifting block.

[0015] A further feature of this invention is that a second hydraulic cylinder is fixedly connected to the outer wall of the lifting block on the side away from the grinding table. The piston shaft of the second hydraulic cylinder moves through the lifting block and is fixedly connected to a connecting frame. The end of the connecting frame away from the lifting block is fixedly connected to the outer wall of the grinding disc on the side close to the lifting block.

[0016] A further feature of this invention is that: both sides of the interior of the grinding table are fixedly connected with slide rods along the longitudinal direction, and a second slider is slidably sleeved on the outer wall of the slide rod along the axial direction. The top of the second slider is welded to both sides of the lower surface of the moving plate, and a return spring is sleeved on the front and rear ends of the outer wall of the slide rod.

[0017] A further feature of this invention is that a second drive motor is fixedly connected to the center of the lower surface of the fixed plate, and a half gear is sleeved on the output shaft of the second drive motor.

[0018] The present invention is further configured as follows: a second sliding groove is provided on both sides of the upper surface of the movable plate along the transverse direction; the bottom of the movable frame is slidably connected to the inside of the second sliding groove; a dual-axis motor is fixedly connected to the center position of the upper surface of the movable plate through a first motor frame; bearing seats are fixedly connected to both sides of the upper surface of the movable plate; the output shafts of the dual-axis motors are fixedly connected to sleeve rods through couplings; the end of the sleeve rod away from the dual-axis motor rotates through the bearing seat; an inner rod is threaded inside the sleeve rod; one end of the inner rod is fixedly connected to the outer wall of the movable frame near the dual-axis motor; a third hydraulic cylinder is fixedly connected to the inner side of the movable frame; the piston shaft of the third hydraulic cylinder moves through the top of the movable frame and is fixedly connected to the bottom of the fixed frame.

[0019] A further feature of this invention is that a third drive motor is fixedly connected to the top side of the mounting cylinder via a second motor frame, a drive gear is sleeved on the output shaft of the third drive motor, a transmission gear is meshed below the drive gear, the transmission gear is rotatably connected to one side of the mounting cylinder, and an external gear ring is sleeved on the outer wall of one side of the rotating cylinder, the external gear ring is meshed below the transmission gear.

[0020] A further feature of this invention is that: the front and rear end faces and top of the fixed frame and both sides of the top of the rotating cylinder are threaded with a fixing rod; a damping pad is glued to one end of the fixing rod located inside the fixed frame and the rotating cylinder; and a second knob is fixedly connected to one end of the fixing rod located outside the fixed frame and the rotating cylinder.

[0021] A further feature of this invention is that a pad is fixedly connected to the bottom inner side of the fixed frame, and a rubber block is adhered to the top of the pad.

[0022] This utility model has the following beneficial effects:

[0023] 1. This utility model, by setting up a grinding assembly, uses two sets of grinding heads to simultaneously grind the outer and inner walls of the tubular workpiece port. Under the action of the threaded connection between the mounting rod and the threaded rod, the first slider drives one set of grinding heads to move, realizing the adjustment of the distance between the two sets of grinding heads, which is convenient for grinding the port of tubular workpieces with different wall thicknesses.

[0024] 2. This utility model, by setting a fixing component, loosens the fixing rod in the fixing frame to fix the tubular workpiece, and drives the tubular workpiece to rotate via a rotating cylinder, thus realizing the end grinding of the round tubular workpiece. When it is necessary to grind the end of the square tubular workpiece, the fixing rod in the fixing frame fixes the tubular workpiece, and at the same time, the second drive motor is started. The output shaft of the second drive motor drives the half gear to rotate synchronously. Under the action of the meshing connection between the half gear and the rack, the moving frame drives the moving plate to perform longitudinal reciprocating motion, thus realizing the end grinding of the square tubular workpiece. It is convenient to perform end grinding of round or square tubular workpieces according to needs, thus increasing its application range.

[0025] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 A schematic diagram of the overall structure of a grinding machine for the ends of tubular workpieces;

[0028] Figure 2 This is a schematic diagram of the structure of the polishing table of this utility model;

[0029] Figure 3 This is a schematic diagram of the structure of the grinding component of this utility model;

[0030] Figure 4 This is a schematic diagram of the structure of the grinding disc of this utility model;

[0031] Figure 5 This is a schematic diagram of the structure of the first slider of this utility model;

[0032] Figure 6 This is a schematic diagram of the structure of the grinding head of this utility model;

[0033] Figure 7 This is a schematic diagram of the structure of the fixing component of this utility model;

[0034] Figure 8 This is a structural disassembly diagram of the movable plate of this utility model;

[0035] Figure 9 This is a schematic diagram of the structure of the movable frame of this utility model;

[0036] Figure 10This is a schematic diagram showing the installation between the movable frame and the fixed frame of this utility model;

[0037] Figure 11 This is a schematic diagram showing the installation between the mounting cylinder and the rotating cylinder of this utility model.

[0038] The attached diagram lists the components represented by each number as follows:

[0039] 1-Grinding table, 101-Fixed plate, 2-Grinding assembly, 201-L-shaped column, 201a-First hydraulic cylinder, 202-Lifting block, 202a-Second hydraulic cylinder, 202b-Connecting frame, 203-Grinding disc, 203a-First slide groove, 204-First slider, 204a-Mounting rod, 204b-Threaded rod, 204c-First knob, 205-Grinding head, 205a-First drive motor, 3-Fixed assembly, 301-Moving plate, 301a-Slide rod, 301b-First slider, 301c-Return spring, 301d-Connecting plate, 301e-Second slide groove, 302-Moving frame 302a-Rack, 302b-Second drive motor, 302c-Half gear, 303-Moving frame, 303a-First motor frame, 303b-Dual-axis motor, 303c-Bearing housing, 303d-Sleeve rod, 303e-Inner rod, 304-Fixing frame, 304a-Third hydraulic cylinder, 304b-Padded block, 304c-Rubber block, 305-Mounting cylinder, 305a-Second motor frame, 305b-Third drive motor, 305c-Drive gear, 305d-Transmission gear, 306-Rotating drum, 306a-Outer gear ring, 307-Fixing rod, 307a-Damping pad, 307b-Second knob. Detailed Implementation

[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model. Specific Implementation Example 1

[0042] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, this is the first embodiment of the present invention. This embodiment provides a grinding machine for the port of a tubular workpiece, including a grinding table 1 and a grinding assembly 2. The grinding assembly 2 includes an L-shaped column 201, a lifting block 202, a grinding disc 203, a first slider 204, and a grinding head 205. The two sets of grinding heads 205 grind the port of the tubular workpiece respectively, and the distance between the two sets of grinding heads 205 is adjusted by the first slider 204. This solves the problem that it is not convenient to grind the inner and outer walls of the port of the tubular workpiece at the same time.

[0043] Specifically, the horizontal support arms of the L-shaped column 201 are fixedly connected to the outer walls of both sides of the grinding table 1. The lifting block 202 is slidably connected to the vertical support arm of the L-shaped column 201. The grinding disc 203 is movably connected to the side of the lifting block 202 near the grinding table 1. A first groove 203a is vertically formed on the upper part of the outer wall of the grinding disc 203. A first slider 204 is slidably connected to the inner side of the first groove 203a. An installation rod 204a passes through the top of the first groove 203a. A threaded rod 204b is threaded inside the installation rod 204a. A first knob 204c is fixedly connected to one end of the threaded rod 204b located outside the first groove 203a. The other end of the threaded rod 204b located inside the first groove 203a is rotatably connected to the top of the first slider 204. The grinding disc 203 and the first slider 204... A first drive motor 205a is fixedly connected to the center of the outer wall on the side away from the grinding table 1. The grinding head 205 is sleeved on the output shaft of the first drive motor 205a. The L-shaped column 201 is set to install the lifting block 202 and other structures. The lifting block 202 is set to drive the height adjustment of the grinding head 205. The grinding disc 203 is set to install the grinding head 205 and other structures, and drive the grinding head 205 to move laterally. The first slide groove 203a is set to install the first slider 204. The first slider 204 is set to adjust the distance between the grinding heads 205. The two sets of grinding heads 205 are set to grind the outer wall and inner wall of the tubular workpiece port at the same time. The first drive motor 205a is set to drive the grinding head 205 to rotate.

[0044] Furthermore, a first hydraulic cylinder 201a is fixedly connected to the top of the vertical support arm of the L-shaped column 201. The piston shaft of the first hydraulic cylinder 201a moves through the top of the vertical support arm of the L-shaped column 201 and is fixedly connected to the top of the lifting block 202. The first hydraulic cylinder 201a is used to drive the lifting block 202 to move up and down.

[0045] A second hydraulic cylinder 202a is fixedly connected to the outer wall of the lifting block 202 away from the grinding table 1. The piston shaft of the second hydraulic cylinder 202a moves through the lifting block 202 and is fixedly connected to a connecting frame 202b. The end of the connecting frame 202b away from the lifting block 202 is fixedly connected to the outer wall of the grinding disc 203 near the lifting block 202. The second hydraulic cylinder 202a is used to drive the grinding disc 203 to move laterally, and the connecting frame 202b is used to connect the piston shaft of the second hydraulic cylinder 202a to the grinding disc 203.

[0046] The operation process of this embodiment is as follows: First, the first hydraulic cylinder 201a is started. The piston shaft of the first hydraulic cylinder 201a drives the lifting block 202 to move, which in turn drives the grinding head 205 to move up and down. When the grinding head 205 reaches the specified height, the first hydraulic cylinder 201a is closed. Then, the first knob 204c is rotated. The first knob 204c drives the threaded rod 204b to rotate relative to the mounting rod 204a. Under the action of the threaded connection between the threaded rod 204b and the mounting rod 204a, the threaded rod 204b drives the first slider 204 in the first slide groove 2. The first knob 204c stops rotating when the distance between the two sets of grinding heads 205 reaches the preset value range. Finally, the second hydraulic cylinder 202a is started. The piston shaft of the second hydraulic cylinder 202a drives the grinding disc 203 to move through the connecting bracket 202b, so that the grinding heads 205 are located inside and outside the port of the tubular workpiece respectively. The first drive motor 205a is started. The output shaft of the first drive motor 205a drives the grinding heads 205 to rotate synchronously. Thus, the rotation of the grinding heads 205 simultaneously grinds the inner and outer walls of the port of the tubular workpiece. Specific Implementation Example 2

[0048] Please see Figure 7 , Figure 8 , Figure 9 , Figure 10 and Figure 11 As shown, this is the second embodiment of the present invention. This embodiment is based on the previous embodiment, but differs from the previous embodiment in that it also includes a fixing component 3. The fixing component 3 includes a moving plate 301, a moving frame 302, a fixing frame 304, and a rotating cylinder 306. The moving frame 302 drives the moving plate 301 to move longitudinally, realizing the longitudinal linear motion of the opposing tubular workpiece relative to the grinding structure, thereby realizing the grinding of the end of the opposing tubular workpiece, solving the problem that the existing method is not convenient for grinding the end of the opposing tubular workpiece.

[0049] Specifically, the movable plate 301 is movably connected to the inner side of the grinding table 1. Connecting plates 301d are fixedly connected to the front and rear ends of the lower surface of the movable plate 301. The movable frame 302 is fixedly connected between the connecting plates 301d. Racks 302a are fixedly connected to the inner walls of both sides of the movable frame 302. A half-gear 302c is rotatably connected to the center position inside the movable frame 302, and the gears and half-gears 302c mesh with each other. Movable frames 303 are slidably connected to both sides of the upper surface of the movable plate 301. A fixed frame 304 is movably connected to the top of the movable frame 303. A mounting cylinder 305 is fixedly connected above the movable plate 301. A rotating cylinder 306 is rotatably fitted inside the mounting cylinder 305. The 1 is used to drive the tubular workpiece to perform longitudinal reciprocating motion. The connecting plate 301d is used to connect the moving frame 302 and the moving plate 301. The moving frame 302 is used to drive the moving plate 301 to perform longitudinal reciprocating motion. The rack 302a and the half gear 302c are used to drive the moving frame 302 to perform longitudinal reciprocating motion. The moving frame 303 is used to install the fixed frame 304 and drive the fixed frame 304 to move. The fixed frame 304 is used to fix both ends of the tubular workpiece. The mounting cylinder 305 is used to install the rotating cylinder 306 and drive the tubular workpiece to rotate through the rotating cylinder 306.

[0050] Furthermore, both sides of the interior of the grinding table 1 are fixedly connected with slide rods 301a along the longitudinal direction. A second slider 301b is slidably sleeved on the outer wall of the slide rod 301a along the axial direction. The top of the second slider 301b is welded to both sides of the lower surface of the moving plate 301. The front and rear ends of the outer wall of the slide rod 301a are fitted with return springs 301c. The slide rods 301a and the second slider 301b are used to movably install the moving plate 301 on the grinding table 1, and the return springs 301c are used to drive the moving plate 301 to perform spontaneous return movements.

[0051] A second drive motor 302b is fixedly connected to the center of the lower surface of the fixed plate 101. A half gear 302c is sleeved on the output shaft of the second drive motor 302b. The second drive motor 302b is used to install the half gear 302c and drive the half gear 302c to rotate.

[0052] The upper surface of the movable plate 301 has a second sliding groove 301e on both sides in a horizontal direction. The bottom of the movable frame 303 is slidably connected to the inside of the second sliding groove 301e. The second sliding groove 301e is provided to slide the movable frame 303 on the movable plate 301.

[0053] A dual-axis motor 303b is fixedly connected to the center of the upper surface of the movable plate 301 via a first motor frame 303a. Bearing seats 303c are fixedly connected to both sides of the upper surface of the movable plate 301. The output shafts of the dual-axis motors 303b are fixedly connected to sleeve rods 303d via couplings. The end of the sleeve rod 303d away from the dual-axis motor 303b rotatably passes through the bearing seat 303c. An inner rod 303e is threaded inside each sleeve rod 303d, and one end of the inner rod 303e is fixedly connected to the movable plate 301. On the outer wall of the frame 303 near the dual-axis motor 303b, the first motor frame 303a is set up to install the dual-axis motor 303b. The dual-axis motor 303b is set up to drive the sleeve rod 303d to rotate. The bearing seat 303c is set up to install the end of the sleeve rod 303d away from the dual-axis motor 303b. The sleeve rod 303d and the inner rod 303e are set up to drive the moving frame 303 to move laterally and adjust the spacing between the moving frames 303.

[0054] A third hydraulic cylinder 304a is fixedly connected to the inner side of the movable frame 303. The piston shaft of the third hydraulic cylinder 304a moves through the top of the movable frame 303 and is fixedly connected to the bottom of the fixed frame 304. The third hydraulic cylinder 304a is used to movably install the fixed frame 304 on the movable frame 303 and adjust the height of the fixed frame 304.

[0055] A third drive motor 305b is fixedly connected to the top side of the mounting cylinder 305 via a second motor frame 305a. A drive gear 305c is sleeved on the output shaft of the third drive motor 305b. A transmission gear 305d is meshed below the drive gear 305c. The transmission gear 305d is rotatably connected to one side of the mounting cylinder 305. An external gear ring 306a is sleeved on the outer wall of one side of the rotating cylinder 306. The external gear ring 306a is meshed below the transmission gear 305d. The second motor frame 305a is set up to mount the third drive motor 305b. The third drive motor 305b is set up to drive the drive gear 305c to rotate. The transmission gear 305d is set up to connect the drive gear 305c and the external gear ring 306a. The external gear ring 306a is set up to drive the rotating cylinder 306 to rotate.

[0056] The front and rear ends and top of the fixed frame 304 and the top two sides of the rotating cylinder 306 are threaded with fixed rods 307. The end of the fixed rod 307 located inside the fixed frame 304 and the rotating cylinder 306 is bonded with a damping pad 307a. The end of the fixed rod 307 located outside the fixed frame 304 and the rotating cylinder 306 is fixedly connected with a second knob 307b. The fixed rod 307 is used to fix the tubular workpiece inside the fixed frame 304 or the rotating cylinder 306. The damping pad 307a increases the friction between the fixed rod 307 and the tubular workpiece. The second knob 307b facilitates the rotation of the fixed rod 307.

[0057] A pad 304b is fixedly connected to the bottom inner side of the fixed frame 304, and a rubber block 304c is bonded to the top of the pad 304b. The pad 304b is used to support the tubular workpiece inside the fixed frame 304, and the rubber block 304c is used to enable the pad 304b to support tubular workpieces of different shapes.

[0058] The rest of the structure is the same as in Example 1.

[0059] The operation process of this embodiment is as follows: When it is necessary to perform end grinding on a cylindrical workpiece, the cylindrical workpiece is placed horizontally through the rotating drum 306, and its two ends pass through the fixing frame 304. At the same time, the fixing rod 307 on the rotating drum 306 is rotated to fix the cylindrical workpiece. Then, the third drive motor 305b is started. The output shaft of the third drive motor 305b drives the drive gear 305c to rotate synchronously. Under the transmission action of the transmission gear 305d, the external gear ring 306a drives the cylindrical workpiece to rotate through the rotating drum 306. In conjunction with the work of the grinding structure, the end grinding of the cylindrical workpiece is achieved.

[0060] When it is necessary to perform end grinding on the tubular workpiece, rotate the fixing rod 307 on the fixing frame 304. The tubular workpiece is fixed inside the fixing frame 304 by the fixing rod 307. Then, start the second drive motor 302b. The output shaft of the second drive motor 302b drives the half gear 302c to rotate synchronously. Under the action of the meshing connection between the half gear 302c and the rack 302a, the moving frame 302 drives the moving plate 301 to perform longitudinal reciprocating motion. Together with the work of the grinding structure, the end grinding of the tubular workpiece is achieved.

[0061] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0062] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A grinding machine for the end of a tubular workpiece, comprising a grinding table (1), a grinding assembly (2), and a fixing assembly (3), characterized in that: A fixing plate (101) is fixedly connected to the bottom center of the grinding table (1); the grinding assembly (2) includes an L-shaped column (201), a lifting block (202), a grinding disc (203), a first slider (204), and a grinding head (205). The horizontal support arms of the L-shaped column (201) are fixedly connected to the outer walls of both sides of the grinding table (1). The lifting block (202) is slidably connected to the vertical support arm of the L-shaped column (201). The grinding disc (203) is movably connected to the side of the lifting block (202) near the grinding table (1), and a first sliding groove (203a) is vertically opened on the upper part of the outer wall of the grinding disc (203). The first slider (204) is slidably connected to the grinding head (205). The first slide groove (203a) is located inside the first slide groove (203a), and the top of the first slide groove (203a) is penetrated by an installation rod (204a). The installation rod (204a) is threaded with a threaded rod (204b) inside. The end of the threaded rod (204b) located outside the first slide groove (203a) is fixedly connected to a first knob (204c). The end of the threaded rod (204b) located inside the first slide groove (203a) is rotatably connected to the top of the first slider (204). The grinding disc (203) and the first slider (204) are both fixedly connected to the center of the outer wall on the side away from the grinding table (1). The grinding head (205) is sleeved on the output shaft of the first drive motor (205a). The fixing component (3) includes a movable plate (301), a movable frame (302), a fixed frame (304), and a rotating cylinder (306). The movable plate (301) is movably connected to the inner side of the grinding table (1), and connecting plates (301d) are fixedly connected to the front and rear ends of the lower surface of the movable plate (301). The movable frame (302) is fixedly connected between the connecting plates (301d), and racks (302a) are fixedly connected to the inner walls on both sides of the movable frame (302). The movable frame (302) is rotatably connected to the center of the interior of the movable frame (302), and the gear and the half gear (302c) are meshed together. The movable frame (303) is slidably connected to both sides of the upper surface of the movable plate (301). The fixed frame (304) is movably connected to the top of the movable frame (303). The mounting cylinder (305) is fixedly connected to the top of the movable plate (301). The rotating cylinder (306) is rotatably sleeved inside the mounting cylinder (305).

2. The tubular workpiece end grinding machine according to claim 1, characterized in that, The top end of the vertical support arm of the L-shaped column (201) is fixedly connected to a first hydraulic cylinder (201a), and the piston shaft of the first hydraulic cylinder (201a) moves through the top end of the vertical support arm of the L-shaped column (201) and is fixedly connected to the top of the lifting block (202).

3. The tubular workpiece end grinding machine according to claim 1, characterized in that, A second hydraulic cylinder (202a) is fixedly connected to the outer wall of the lifting block (202) away from the grinding table (1), and the piston shaft of the second hydraulic cylinder (202a) moves through the lifting block (202) and is fixedly connected to a connecting frame (202b). One end of the connecting frame (202b) away from the lifting block (202) is fixedly connected to the outer wall of the grinding disc (203) near the lifting block (202).

4. A grinding machine for the ends of tubular workpieces according to claim 1, characterized in that, Both sides of the interior of the grinding table (1) are fixedly connected with slide rods (301a) along the longitudinal direction, and a second slider (301b) is slidably sleeved on the outer wall of the slide rod (301a) along the axial direction. The top of the second slider (301b) is welded to both sides of the lower surface of the moving plate (301), and a return spring (301c) is sleeved on the front and rear ends of the outer wall of the slide rod (301a).

5. A grinding machine for the end of a tubular workpiece according to claim 1, characterized in that, The second drive motor (302b) is fixedly connected to the center of the lower surface of the fixed plate (101), and the half gear (302c) is sleeved on the output shaft of the second drive motor (302b).

6. A grinding machine for the ends of tubular workpieces according to claim 1, characterized in that, The upper surface of the movable plate (301) has second sliding grooves (301e) on both sides, and the bottom of the movable frame (303) is slidably connected to the inside of the second sliding grooves (301e). A dual-axis motor (303b) is fixedly connected to the center of the upper surface of the movable plate (301) through a first motor frame (303a). Bearing seats (303c) are fixedly connected to both sides of the upper surface of the movable plate (301). The output shafts of the dual-axis motors (303b) are fixedly connected to sleeve rods (303d) through couplings. 03d) The end away from the dual-axis motor (303b) rotates through the bearing seat (303c). The sleeve rod (303d) is threaded with an inner rod (303e) inside. One end of the inner rod (303e) is fixedly connected to the outer wall of the movable frame (303) near the dual-axis motor (303b). The inner side of the movable frame (303) is fixedly connected to a third hydraulic cylinder (304a). The piston shaft of the third hydraulic cylinder (304a) moves through the top of the movable frame (303) and is fixedly connected to the bottom of the fixed frame (304).

7. A grinding machine for the ends of tubular workpieces according to claim 1, characterized in that, A third drive motor (305b) is fixedly connected to one side of the top of the mounting cylinder (305) via a second motor frame (305a). A drive gear (305c) is sleeved on the output shaft of the third drive motor (305b). A transmission gear (305d) is meshed below the drive gear (305c) and is rotatably connected to one side of the mounting cylinder (305). An external gear ring (306a) is sleeved on one side of the outer wall of the rotating cylinder (306) and is meshed below the transmission gear (305d).

8. A grinding machine for the ends of tubular workpieces according to claim 1, characterized in that, The front and rear ends and top of the fixed frame (304) and the top two sides of the rotating cylinder (306) are threaded with fixed rods (307). The end of the fixed rod (307) located inside the fixed frame (304) and the rotating cylinder (306) is bonded with a damping pad (307a), and the end of the fixed rod (307) located outside the fixed frame (304) and the rotating cylinder (306) is fixedly connected with a second knob (307b).

9. A grinding machine for the end of a tubular workpiece according to claim 8, characterized in that, A pad (304b) is fixedly connected to the bottom inner side of the fixed frame (304), and a rubber block (304c) is glued to the top of the pad (304b).

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