Machine tool knife rest for internal grinding of neodymium iron boron circular ring

Abstract

The utility model discloses a machine tool knife rest for internal grinding of a neodymium iron boron circular ring. The machine tool knife rest comprises a mounting rack, a worm and gear lifting mechanism, a grinding wheel polishing mechanism and a sliding table mechanism, the mounting rack is provided with an upper table top and a lower table top, and the two table tops form a semi-enclosed space for mounting and protecting the worm and gear lifting mechanism; the worm and gear lifting mechanism is rotationally connected with the table tops of the mounting rack, and a lifting part moves up and down between the two table tops of the mounting rack and can be kept static at any height; the sliding table mechanism is fixedly connected to the lower table top of the mounting rack and located on the front side of the worm and gear lifting mechanism, and a sliding part horizontally slides between the edge of the table top and the worm and gear lifting mechanism; a grinding device is arranged on the grinding wheel grinding mechanism; one end of the grinding wheel polishing mechanism is rotationally connected to the lifting component and moves up and down together, and the other end is rotationally connected with the sliding component and moves horizontally in a linkage mode; the polishing device achieves relative change of height under the combined action of movement of the two ends.

Description

Technical Field

[0001] The utility model belongs to the field of mechanical processing and manufacturing, and more specifically relates to a machine tool tool holder for internal grinding of a NdFeB ring. Background Art

[0002] When performing internal grinding on ring-type products, since the height of the machine tool spindle is a fixed parameter and the heights of different machine tool spindles vary, it is often necessary to adjust the height of the mounting tool holder of the grinding wheel to match the grinding working conditions.

[0003] At present, in the existing technology, such as in the Chinese patent application number CN201820124496.7, an internal hole grinding wheel tool holder is disclosed. The relative height of the grinding wheel tool holder is fixed and can only match the X-axis height of the machine tool spindle applicable to this application patent. For other machine tools, there is a possibility that the grinding wheel height cannot match the processing height, and there is no universality for different machine tools.

[0004] For the above solution, it is often necessary to design a tool mounting bracket for a machine tool with a specific spindle height, which generates unnecessary time and economic costs when replacing a machine tool with a different spindle height. Utility Model Content

[0005] The design purpose of the utility model is to provide a NdFeB ring internal grinding machine tool tool holder to solve the above problems. It can achieve universal grinding when the machine tool is installed at different X-axis heights by adjusting the relative height of the grinding wheel.

[0006] The utility model discloses a NdFeB ring internal grinding machine tool tool holder, which comprises a mounting frame, a worm gear lifting mechanism, a grinding wheel grinding mechanism and a slide mechanism.

[0007] The mounting frame is formed with an upper and a lower table, and the two tables form a semi-enclosed space for installing and protecting the worm gear lifting mechanism;

[0008] The worm gear lifting mechanism is rotatably connected to the mounting frame table, wherein a lifting component moves up and down between the two tables of the mounting frame and can remain stationary at any height therein.

[0009] The slide mechanism is fixedly connected to the lower table of the mounting frame and is located in front of the worm gear lifting mechanism, wherein a sliding component slides horizontally between the edge of the table and the worm gear lifting mechanism.

[0010] The grinding wheel grinding mechanism is fixedly provided with a grinding device. One end of the grinding wheel grinding mechanism is rotatably connected to the lifting component, moving up and down together, and the other end is rotatably connected to the sliding component, performing a linked horizontal movement. The grinding device achieves relative height changes under the combined action of the movement of both ends.

[0011] As a further improvement of the present invention, the mounting frame is provided with a plurality of evenly spaced process holes on the lower table for connection and fixation with the machine tool carriage.

[0012] As a further improvement to the present invention, the lifting components of the worm gear lifting mechanism include a connecting shaft guide rod, a connecting shaft slide rod, and a worm gear connecting shaft. The connecting shaft guide rod and the connecting shaft slide rod are vertically fixed between the upper and lower surfaces of the mounting frame, and the worm gear connecting shaft is slidably connected to the two rods and mounted horizontally. The worm is vertically mounted between the upper and lower surfaces of the mounting frame and can rotate freely. The upper end of the worm extends through the upper surface of the mounting frame. The worm wheel is rotationally connected to the worm gear connecting shaft and meshes with the worm. The worm drives the worm wheel to rotate to change its height, and the worm gear connecting shaft and the worm wheel move up and down along the two rods in conjunction with each other.

[0013] As a further improvement of the present invention, the slide mechanism includes a slide base and a linear slide rail. The linear slide rail is located in front of the worm gear lifting mechanism and is fixedly mounted on the mounting frame. The slide base is slidably connected to the linear slide rail and moves horizontally along the linear slide rail.

[0014] As a further improvement of the present invention, the grinding wheel grinding mechanism includes a grinding wheel seat and a grinding machine. The grinding wheel seat is tilted and arranged between the worm gear lifting mechanism and the slide mechanism, with one end higher and the other end lower. The grinding machine is fixedly mounted on the grinding wheel seat. The higher end of the grinding wheel seat is rotatably connected to the worm gear connecting shaft, and the other end is rotatably connected to the slide seat. The worm gear connecting shaft drives the higher end to move in the vertical direction, while the other end and the slide seat move in the horizontal direction in conjunction with it. The relative height of the grinding machine fixed above changes with the movement of the grinding wheel seat to match the machine tool spindles of different heights.

[0015] As a further improvement of the present invention, the spiral angle of the worm selected in the worm gear lifting mechanism is smaller than the contact friction angle between the worm wheel and the worm, and has a self-locking characteristic. The rotation of the worm wheel can only be driven by the rotation of the worm, and vice versa. When the worm is fixed and does not rotate, the height of the worm gear is fixed to achieve stillness at any height.

[0016] As a further improvement of the present invention, one end of the worm screw passing through the upper table of the mounting frame is fixedly connected to a rotating handle for driving the worm screw to rotate. The rotating handle is provided with a locking device that can be locked with the upper table of the mounting frame to fix the worm screw.

[0017] As a further improvement of the present invention, a slide rail stopper is further included. The slide rail stopper is installed at one end of the linear slide rail away from the worm and is higher than the linear slide rail to prevent the slide seat from slipping.

[0018] Compared with the prior art, the beneficial effect of the present invention is that the NdFeB ring internal grinding machine tool tool holder of the present invention can adjust the grinding wheel height for machine tools with different spindle heights and has processing versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the worm gear lifting mechanism of the present utility model;

[0021] Figure 3 This is a schematic diagram of the installation rack of the utility model;

[0022] Figure 4 This is a schematic diagram of the other side of the grinding wheel grinding mechanism of the present invention;

[0023] Figure 5 It is an enlarged schematic diagram of the slide mechanism of the utility model;

[0024] Figure 6 This is an enlarged schematic diagram of the rotating handle of the present utility model;

[0025] Figure 7 This is a schematic diagram of the working condition of the utility model, with the workpiece in cross-section;

[0026] Description of the numbers in the figure:

[0027] 1. Mounting frame; 2. Worm gear lifting mechanism; 3. Grinding wheel grinding mechanism; 4. Slide mechanism; 5. Connecting shaft guide rod; 6. Connecting shaft slide rod; 7. Worm gear connecting shaft; 8. Worm gear; 9. Worm; 10. Slide seat; 11. Linear slide rail; 12. Grinding wheel seat; 13. Grinding wheel machine; 14. Rotating handle; 15. Slide rail stop. DETAILED DESCRIPTION

[0028] Specific embodiment 1: Please refer to the attached figure

[0029] A NdFeB ring internal grinding machine tool tool holder comprises a mounting frame 1, a worm gear lifting mechanism 2, a grinding wheel grinding mechanism 3 and a slide mechanism 4.

[0030] The mounting frame 1 is made of metal and consists of two upper and lower platforms. The upper platform is shorter than the lower platform, forming a semi-enclosed space to protect the worm gear lifting mechanism 2 installed therein. The upper and lower platforms are each provided with corresponding vertical mounting holes for the slide rail, guide rod, and worm. The lower platform is provided with evenly spaced process holes for positioning and mounting the machine tool carriage.

[0031] The worm gear lifting mechanism 2 includes a sliding rod lifting structure consisting of a connecting shaft guide rod 5, a connecting shaft slide rod 6, and a worm gear connecting shaft 7. The connecting shaft guide rod 5 and the connecting shaft slide rod 6 are slender rods, and the ends of the rods pass through the slide rail mounting holes and guide rod mounting holes of the upper and lower tables respectively, and are vertically installed in parallel on the mounting frame 1 using bolts. The worm gear connecting shaft 7 is a stepped shaft part with a thick middle and thin ends. The thinner ends are respectively provided with vertical through holes in the center along the radial direction. The position and size of the through holes match the corresponding connecting shaft guide rod 5 and connecting shaft slide rod 6. The two holes of the worm gear connecting shaft 7 match and pass through the two rods, are installed horizontally, and slide up and down along the vertical direction of the rods. The worm wheel 8 is rotatably connected to the middle part of the worm gear connecting shaft 7 through a bearing. The worm 9 is vertically installed between the upper and lower tables, located in the middle and rear of the two rods, and matches the worm wheel 8 for meshing transmission. Both ends of the worm 9 pass through the upper and lower tables and are fitted with bearings to enable free rotation. When the worm 9 rotates and drives the worm wheel 8, the worm wheel 8 drives the worm wheel connecting shaft 7 to move vertically within the constraints of the connecting shaft guide rod 5 and the connecting shaft slide rod 6. During this coordinated movement, the connecting shaft slide rod 6 is the primary load-bearing rod, so its diameter is thicker than the connecting shaft guide rod 5. It matches the through hole on the corresponding worm wheel connecting shaft 7 and is correspondingly provided with raised cylindrical hollow walls extending along the upper and lower ends of the rod to better bear the load.

[0032] The rotating handle 14 is fixed to the upper end of the worm 9 by means of bolts, and a hand wheel is formed at the end away from the worm 9 to facilitate the rotation of the rotating handle 14 .

[0033] The slide mechanism 4 includes a slide seat 10 and a linear slide rail 11, which are arranged at a position where the lower table of the mounting frame 1 is longer than the upper table. The slide seat 10 is a horizontally arranged cylindrical part, the upper half is semicircular, and the lower half is trapezoidal. The semicircular part has a through hole through the center of the circle, and two longitudinal through grooves with a depth exceeding the through hole are opened at the same distance from the two end faces. The two linear slide rails 11 are fixed longitudinally and horizontally on the lower table of the mounting frame 1 by bolts. The cross-section of the linear slide rail 11 is similar to that of an I-beam, with the middle and the two ends narrowing inward. The trapezoidal lower part of the slide seat 10 has two notches of corresponding shapes, which match and connect the two linear slide rails 11 to realize the longitudinal translation movement guided by the linear slide rail 11.

[0034] The grinding wheel grinding mechanism 3 includes a grinding wheel seat 12 and a grinding machine 13. The grinding wheel seat 12 is a metal rectangular plate-shaped part, which is tilted and arranged between the worm gear lifting mechanism 2 and the slide mechanism 4, with one end high and the other end low. Two vertical shaft ears extend on both sides of the high and low ends. The grinding machine 13 is installed horizontally on the upper side of the grinding wheel seat 12 with bolts, and a motor is installed behind it in parallel to provide grinding power through a belt and a pulley. The shaft ear at the higher end of the grinding wheel seat 12 is installed with a bearing and is hinged to the left and right shaft ends of the worm gear connecting shaft 7. The shaft ear at the other end is installed with a bearing and extends into the through groove of the slide seat 10. A connecting shaft passes through the through hole of the slide seat 10 and the inner ring of the bearing, and the lower end of the grinding wheel seat 12 is hinged in series with the slide seat 10 to achieve a rotational connection.

[0035] Instructions for Use: This embodiment utilizes a right-handed worm gear 9. Clockwise rotation of the handle 14 drives the worm 9, causing the worm wheel 8 to rotate upward and exerting an upward force on the worm wheel connecting shaft 7, driving it to translate upward. The higher end of the grinding wheel holder 12, rotatably connected to the worm wheel connecting shaft 7, is also driven upward. Simultaneously, the lower end of the grinding wheel holder 12 and the slide 10, rotatably connected thereto, translate toward the worm 9, constrained by the mating linear guide 11. The grinding wheel holder 12 pivots and rises relative to the slide 10 at its hinge point. The fixedly mounted grinding wheel 13 achieves an upward elevation change during the vertical movement of the grinding wheel holder 12, thereby raising the grinding wheel head upward. Conversely, counterclockwise rotation of the handle 14 lowers the grinding wheel head downward. By adjusting the grinding wheel head height according to the varying heights of the target circular workpiece within the machine tool spindle, the operating mechanism achieves universal adaptability.

[0036] Specific embodiment 2: Compared with embodiment 1, the spiral angle of the worm 9 selected in the worm gear lifting mechanism 2 is smaller than the contact friction angle between the worm wheel 8 and the worm 9, and has a self-locking characteristic. The worm wheel 8 can only be driven by the rotation of the worm 9, but not vice versa. When the worm 9 stops and is not driven, the height of the worm wheel 8 is fixed and remains stationary at the stop height.

[0037] Specific Example 3: This embodiment, based on Example 2, features a stud below the handwheel of the rotating handle 14, which is threadedly engaged with the handle rod. The stud can be extended or retracted by turning the handwheel. The lower end of the stud protrudes outward into a disc. As the stud is turned and extended downward, it fits tightly against the upper surface of the mounting frame 1. The resulting friction locks the rotating handle 14, preventing accidental contact with the rotating handle 14 during operation, which could cause the grinding wheel height to change.

[0038] Specific embodiment 4: Based on embodiment 3, this embodiment installs a rail stopper 15 at the end of the linear rail 11 away from the worm 9. The rail stopper is higher than the linear rail 11 to prevent the slide seat 10 from slipping when the grinding wheel height is adjusted downward.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to be limiting. All variations, modifications, and substitutions within the spirit and principles of this design are within the scope of protection of this utility model.

Claims

1. A machine tool tool holder for NdFeB ring internal grinding, characterized by: It includes a mounting frame (1), a worm gear lifting mechanism (2), a grinding wheel grinding mechanism (3) and a slide mechanism (4); The mounting frame (1) is formed with an upper and a lower table, and the two table forms a semi-enclosed space for mounting and protecting the worm gear lifting mechanism (2); The worm gear lifting mechanism (2) is rotatably connected to the table of the mounting frame (1), wherein a lifting component moves up and down between the two tables of the mounting frame (1) and can remain stationary at any height therein; The slide mechanism (4) is fixedly connected to the lower table of the mounting frame (1) and is located in front of the worm gear lifting mechanism (2), wherein a sliding component slides horizontally between the edge of the table and the worm gear lifting mechanism (2); A grinding device is fixedly provided on the grinding wheel grinding mechanism (3); one end of the grinding wheel grinding mechanism (3) is rotatably connected to the lifting component and moves up and down together, and the other end is rotatably connected to the sliding component and performs linked horizontal movement; the grinding device achieves relative height change under the combined action of the movement of the two ends.

2. The NdFeB ring internal grinding machine tool tool holder according to claim 1, characterized in that: The mounting frame (1) is provided with a plurality of evenly spaced process holes on the lower table for connection and fixation with the machine tool carriage.

3. The NdFeB ring internal grinding machine tool tool holder according to claim 2, characterized in that: The lifting components of the worm gear lifting mechanism (2) include a connecting shaft guide rod (5), a connecting shaft slide rod (6) and a worm gear connecting shaft (7); the connecting shaft guide rod (5) and the connecting shaft slide rod (6) are vertically fixed between the upper and lower tables of the mounting frame (1); the worm gear connecting shaft (7) is slidably connected to the two rods and is horizontally mounted; the worm gear (9) is vertically mounted between the upper and lower tables of the mounting frame (1) and can rotate freely, and the upper end of the worm gear (9) passes through the upper table of the mounting frame (1); the worm gear (8) is rotatably connected to the worm gear connecting shaft (7) and is matched and meshed with the worm gear (9); the worm gear (9) drives the worm gear (8) to rotate to change its height, and the worm gear connecting shaft (7) and the worm gear (8) are linked to move up and down along the two rods.

4. The NdFeB ring internal grinding machine tool tool holder according to claim 3, characterized in that: The slide mechanism (4) includes a slide seat (10) and a linear slide rail (11); the linear slide rail (11) is located at the front side of the worm gear lifting mechanism (2) and is fixedly arranged on the mounting frame (1); the slide seat (10) is slidably connected to the linear slide rail (11) and moves horizontally along the linear slide rail (11).

5. The NdFeB ring internal grinding machine tool tool holder according to claim 4, characterized in that: The grinding wheel grinding mechanism (3) includes a grinding wheel seat (12) and a grinding wheel machine (13); the grinding wheel seat (12) is tilted and arranged between the worm gear lifting mechanism (2) and the slide mechanism (4), with one end higher and the other end lower, and the grinding wheel machine (13) is fixedly mounted on the grinding wheel seat (12); the higher end of the grinding wheel seat (12) is rotationally connected to the worm gear connecting shaft (7), and the other end is rotationally connected to the slide seat (10); the worm gear connecting shaft (7) drives the higher end to move in the vertical direction, and the other end moves together with the slide seat (10) in the horizontal direction and is linked thereto, and the relative height of the grinding wheel machine (13) fixed above changes with the movement of the grinding wheel seat (12) to match the machine tool spindles of different heights.

6. The NdFeB ring internal grinding machine tool tool holder according to claim 3, characterized in that: The spiral angle of the worm (9) selected in the worm gear lifting mechanism (2) is smaller than the contact friction angle between the worm wheel (8) and the worm (9), and has a self-locking characteristic. The worm wheel (8) can only be driven to rotate by the rotation of the worm (9), and vice versa. When the worm (9) is fixed and does not rotate, the height of the worm wheel is fixed to achieve stillness at any height.

7. The NdFeB ring internal grinding machine tool tool holder according to claim 6, characterized in that: One end of the worm (9) passing through the upper table of the mounting frame (1) is fixedly connected to a rotating handle (14) for driving the worm (9) to rotate; a locking device is formed on the rotating handle (14) and can be locked with the upper table of the mounting frame (1) to fix the worm (9).

8. The NdFeB ring internal grinding machine tool tool holder according to claim 4, characterized in that: The invention also includes a slide rail stopper (15), which is installed at one end of the linear slide rail (11) away from the worm (9) and is higher than the linear slide rail (11) to prevent the slide seat (10) from slipping.

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