Grinding machine

Abstract

The invention relates to the field of machining, in particular to a grinding machine which comprises a circular ring seat, supporting leg frames are symmetrically arranged at the two ends of the circular ring seat, a spherical ring seat is arranged in the center of the circular ring seat, three grooves are evenly formed in the spherical ring seat in the circumferential direction, supporting arm rods are arranged in the three grooves in a sliding mode, and supporting blocks are perpendicularly fixed to the ends, close to the center of the spherical ring seat, of the three supporting arm rods. Three limiting frames are evenly arranged on the upper end face of the spherical ring seat in the circumferential direction, a threaded disc is arranged among the three limiting frames in a rotation limiting mode, the lower end face of the threaded disc is in threaded connection with the upper end faces of the three supporting arm rods, and a positioning screw is in threaded connection with one limiting frame and used for abutting against the threaded disc. A lifting frame slides on one supporting leg frame in a lifting limiting mode, a grinding disc is arranged on the lifting frame in a rotating mode, grinding paper with a sponge layer adheres to the lower end of the grinding disc, and an adjusting screw rod is arranged on the lifting frame in a rotating mode and is in threaded connection with the supporting leg frame. The spherical surface polishing device is convenient for polishing a spherical surface.

Description

Technical Field

[0001] The invention relates to the field of processing, in particular to a grinding machine. Background Art

[0002] A grinder is a machine tool that uses abrasive tools to grind the surface of a workpiece. Most grinders use high-speed rotating grinding wheels for grinding, while a few use other grinding tools such as oilstones and abrasive belts and free abrasives for processing, such as honing machines, superfinishing machines, belt grinders, grinders and polishers. However, most existing grinders are used to grind axial surfaces or planes, and are not convenient for grinding spherical surfaces. Summary of the invention

[0003] The purpose of the invention is to provide a grinding machine which is convenient for grinding a spherical surface.

[0004] The purpose of the present invention is achieved through the following technical solutions:

[0005] A grinding machine comprises a circular ring seat with support frames symmetrically arranged at both ends, a spherical ring seat is arranged in the center of the circular ring seat, three grooves are evenly arranged on the spherical ring seat in the circumferential direction, support arm rods are slid in the three grooves, and support blocks are vertically fixed to the three support arm rods near the center end of the spherical ring seat, and three limit frames are evenly arranged on the upper end surface of the spherical ring seat in the circumferential direction, a threaded disk is provided between the three limit frames to limit rotation, the lower end surface of the threaded disk is connected to the upper end surfaces of the three support arm rods by threads, a positioning screw is threadedly connected to one of the limit frames for tightening the threaded disk, a lifting frame is provided on one of the leg frames for lifting and limiting sliding, a grinding disc is rotatably provided on the lifting frame, and a grinding paper with a sponge layer is adhered to the lower end of the grinding disc, an adjusting screw is rotatably provided on the lifting frame, and the adjusting screw is threadedly connected to the leg frame.

[0006] An inclined surface is arranged on the upper end of the support block near the central end of the spherical ring seat, and anti-skid rubber is arranged on the inclined surface.

[0007] A clamping block is arranged on the upper end of the supporting block.

[0008] A transverse axis frame is fixed at the lower end of the spherical ring seat, a control screw is threadedly connected to the other leg frame, a fork frame is rotated at the inner end of the control screw, and a linkage plate is rotated between the fork frame and the transverse axis frame.

[0009] A plurality of ridges are evenly arranged on the upper end of the threaded disk.

[0010] A push rod is axially penetrated and slidably provided in one of the support arm rods.

[0011] The push rod is provided with an auxiliary rod at the center end near the spherical ring seat through a torsion spring for rotation, and a corresponding support block is provided with a placement groove near the center end of the spherical ring seat for accommodating the auxiliary rod.

[0012] The auxiliary rod is provided with anti-skid rubber near the center end of the spherical ring seat.

[0013] A screw frame is fixed on the center end of the support arm rod away from the spherical ring seat, and a mounting plate is connected to the screw frame. A turntable rotates on the mounting plate, and a connecting rod rotates between the eccentric part of the turntable and the push rod.

[0014] A threaded sleeve is rotatably arranged on the mounting plate, and the threaded sleeve is threadedly connected to the screw rod frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 and Figure 2 It is a schematic diagram of the structure of the grinding machine;

[0016] Figure 3 It is a schematic diagram of the structure of the ring seat;

[0017] Figure 4 It is a schematic diagram of the local structure of the grinding machine;

[0018] Figure 5 and Figure 6 It is a schematic diagram of the structure of the spherical ring seat;

[0019] Figure 7 It is a structural schematic diagram of the support arm, the clamp block and the support block;

[0020] Figure 8 and Fig. 9 It is a schematic diagram of the structure of the screw rack and the mounting plate;

[0021] Fig.10 It is a schematic diagram of the structure of the push rod and the auxiliary rod;

[0022] Fig.11 It is a structural diagram of the lifting frame.

[0023] In the figure:

[0024] Ring seat 101; leg support 102;

[0025] Spherical ring seat 201; groove 202; limit frame 203; positioning screw 204; horizontal axis frame 205; linkage plate 206; fork frame 207; control screw 208; threaded disk 209;

[0026] Support arm 301; clamp block 302; support block 303; screw rod frame 304; mounting plate 305; threaded sleeve 306; placement groove 307;

[0027] Push rod 401; auxiliary rod 402; turntable 403; linkage rod 404;

[0028] Lifting frame 501; grinding disc 502; adjusting screw 503. DETAILED DESCRIPTION

[0029] like Figure 1-11As shown, the grinding machine is described in detail:

[0030] A grinding machine, comprising a circular ring seat 101 with leg frames 102 symmetrically arranged at both ends, a spherical ring seat 201 arranged at the center of the circular ring seat 101, three grooves 202 uniformly arranged on the spherical ring seat 201, arm rods 301 sliding in the three grooves 202, support blocks 303 vertically fixed to the three arm rods 301 near the center end of the spherical ring seat 201, three limit frames 203 uniformly arranged on the upper end surface of the spherical ring seat 201, and threaded disks 209 limiting rotation between the three limit frames 203 The lower end surface of the threaded disk 209 is threadedly connected to the upper end surfaces of the three support arm rods 301, one of the limit frames 203 is threadedly connected with a positioning screw 204 for tightening the threaded disk 209, one of the leg frames 102 is provided with a lifting frame 501 for lifting and limiting sliding, a grinding disk 502 is rotated on the lifting frame 501, and a grinding paper with a sponge layer is adhered to the lower end of the grinding disk 502, an adjusting screw 503 is rotated on the lifting frame 501, and the adjusting screw 503 is threadedly connected to the leg frame 102.

[0031] When in use, the sphere to be polished is placed on the three support blocks 303, and then the first motor installed on the lifting frame 501 is started to drive the polishing disc 502, so that the polishing paper is driven to rotate through the polishing disc 502, and then the adjusting screw 503 is rotated to make the adjusting screw 503 drive the leg frame 102 to descend, and then the rotating polishing paper is pressed against the upper end of the sphere to polish the surface of the sphere at the upper end. By changing the surface of the sphere at the upper end, the purpose of completely polishing the surface of the sphere is achieved;

[0032] A sponge layer is provided between the grinding disc 502 and the grinding paper. During grinding, the deformation of the sponge layer increases the surface contact area between the grinding paper and the sphere, thereby improving the grinding efficiency.

[0033] By rotating the threaded disk 209, the threaded disk 209 can simultaneously threadably transmit the three support arms 301 so that the three support arms 301 can synchronously drive the three support blocks 303 to approach or move away from the center of the spherical ring seat 201, thereby allowing the three support blocks 303 to adapt to the support and placement of spheres of different diameters; at the same time, by rotating the positioning screw 204, the inner end of the positioning screw 204 can be pressed tightly against the threaded disk 209 to lock the position of the threaded disk 209, thereby preventing the three support blocks 303 from moving automatically and ensuring the stability of the support.

[0034] Further:

[0035] By providing an inclined surface at the upper end of the support block 303 close to the central end of the spherical ring seat 201 and providing anti-skid rubber on the inclined surface, the sphere can be better supported by the three support blocks 303 .

[0036] like Figure 7 As shown:

[0037] A clamping block 302 is disposed at the upper end of the supporting block 303 .

[0038] When a column extends from one end of the spherical surface of the sphere to be polished and cannot be supported by the three supporting blocks 303, the column is inserted into the center of the annular seat 101, and the three arm rods 301 are similarly controlled to approach, and then the column is clamped and fixed by the three clamping blocks 302, so as to polish the spherical surface;

[0039] Further:

[0040] A transverse axis frame 205 is fixed to the lower end of the spherical ring seat 201, and a control screw 208 is threadedly connected to the other leg frame 102. A fork frame 207 is rotated on the inner end of the control screw 208, and a linkage plate 206 is rotated between the fork frame 207 and the transverse axis frame 205.

[0041] In order to fully grind the spherical surface of a sphere with a column extending from one end, the control screw 208 can be rotated to move the control screw 208 on the leg frame 102, and then the spherical ring seat 201 is driven to rotate on the circular ring seat 101 through the cooperation of the fork frame 207, the linkage plate 206 and the horizontal axis frame 205, and then the spherical ring seat 201 and the column at its center are transformed into an inclined state, and the grinding disc 502 rotating above is cooperated to complete the comprehensive grinding of the spherical surface of the sphere with a column extending from one end.

[0042] like Figure 4 As shown:

[0043] By evenly disposing a plurality of ridges on the upper end of the threaded disk 209 , it is convenient to push the threaded disk 209 to rotate and adjust the positions of the three support blocks 303 .

[0044] like Figure 8-10 As shown:

[0045] A push rod 401 axially penetrates and slides inside one of the support arms 301;

[0046] Through the setting of the push rod 401, when the spherical surface of the sphere is polished, the push rod 401 can be pushed back and forth in the direction of the sphere, so that the push rod 401 contacts the sphere and pushes it, so that the sphere compresses the sponge upward and rolls at the same time, and when the push rod 401 slides outward, it automatically falls back to the three supporting blocks 303, forming a replacement of the upper surface of the sphere, thereby achieving the complete polishing of the sphere surface without stopping the machine.

[0047] Further:

[0048] The push rod 401 is provided with an auxiliary rod 402 at the center end near the spherical ring seat 201 through a torsion spring, and a corresponding support block 303 is provided with a placement groove 307 near the center end of the spherical ring seat 201 for accommodating the auxiliary rod 402 .

[0049] By setting the auxiliary rod 402, the push rod 401 is extended upward near the end of the sphere, and under the torsion force of the torsion spring, when the push rod 401 is pushed inward and the auxiliary rod 402 is driven to leave the placement groove 307, the auxiliary rod 402 will press the push rod 401 to change it to an inclined upward state, so that the auxiliary rod 402 can better contact with the lower end of the sphere, push the sphere, and replace the upper surface of the sphere, thereby avoiding the push rod 401 from being unable to contact the lower end of the sphere.

[0050] Further:

[0051] By providing anti-skid rubber at the central end of the auxiliary rod 402 close to the spherical ring seat 201, the ball can be pushed by the auxiliary rod 402 to make the ball roll better.

[0052] Further:

[0053] A screw frame 304 is fixed to the center end of the support arm 301 away from the spherical ring seat 201 , and a mounting plate 305 is connected to the screw frame 304 . A turntable 403 rotates on the mounting plate 305 , and a linkage rod 404 rotates between the eccentric part of the turntable 403 and the push rod 401 .

[0054] The second motor installed on the mounting plate 305 drives the turntable 403 , thereby forming a reciprocating sliding of the push rod 401 driven by the connecting rod 404 .

[0055] Further:

[0056] A threaded sleeve 306 is rotatably disposed on the mounting plate 305 , and the threaded sleeve 306 is threadedly connected to the screw holder 304 .

[0057] By rotating the threaded sleeve 306 , the threaded sleeve 306 can move axially on the screw rod frame 304 , thereby causing the mounting plate 305 to move axially, so that the push rod 401 and the auxiliary rod 402 can adapt to the tumbling of balls of different diameters.

Claims

1. A grinding machine, characterized in that: The invention comprises a circular ring seat (101) with leg frames (102) symmetrically arranged at both ends, a spherical ring seat (201) being arranged at the center of the circular ring seat (101), three grooves (202) being evenly arranged on the spherical ring seat (201) in a circumferential direction, support arms (301) sliding in the three grooves (202), support blocks (303) being vertically fixed to the three support arms (301) near the center end of the spherical ring seat (201), three limiting frames (203) being evenly arranged on the upper end surface of the spherical ring seat (201), and a threaded disk (209) being arranged between the three limiting frames (203) for limiting rotation, The lower end surface of the threaded disk (209) is connected to the upper end surfaces of the three arm rods (301) by threads, and a positioning screw (204) is threadedly connected to one of the limit frames (203) for tightening the threaded disk (209). A lifting frame (501) is provided on one of the leg frames (102) for lifting and limiting sliding, and a grinding disk (502) is rotatably provided on the lifting frame (501). A grinding paper with a sponge layer is adhered to the lower end of the grinding disk (502), and an adjusting screw (503) is rotatably provided on the lifting frame (501), and the adjusting screw (503) is threadedly connected to the leg frame (102).

2. A grinding machine according to claim 1, characterized in that: The upper end of the support block (303) is provided with an inclined surface close to the central end of the spherical ring seat (201), and the inclined surface is provided with anti-slip rubber.

3. A grinding machine according to claim 1, characterized in that: A clamping block (302) is provided at the upper end of the supporting block (303).

4. A grinding machine according to claim 3, characterized in that: A transverse axis frame (205) is fixed at the lower end of the spherical ring seat (201), a control screw (208) is threadedly connected to the other leg frame (102), a fork frame (207) is rotatably provided at the inner end of the control screw (208), and a linkage plate (206) is rotatably provided between the fork frame (207) and the transverse axis frame (205).

5. A grinding machine according to claim 1, characterized in that: The upper end of the threaded disk (209) is evenly provided with a plurality of ridges.

6. A grinding machine according to claim 1, characterized in that: A push rod (401) axially penetrates and slides inside one of the support arms (301).

7. A grinding machine according to claim 6, characterized in that: The push rod (401) is provided with an auxiliary rod (402) at the central end close to the spherical ring seat (201) through a torsion spring, and a corresponding support block (303) is provided with a placement groove (307) close to the central end of the spherical ring seat (201) for accommodating the auxiliary rod (402).

8. A grinding machine according to claim 7, characterized in that: The auxiliary rod (402) is provided with anti-slip rubber near the central end of the spherical ring seat (201).

9. A grinding machine according to claim 6, characterized in that: A screw frame (304) is fixed to the central end of the support arm (301) away from the spherical ring seat (201), and a mounting plate (305) is connected to the screw frame (304). A rotating disk (403) rotates on the mounting plate (305), and a connecting rod (404) rotates between the eccentric part of the rotating disk (403) and the push rod (401).

10. A grinding machine according to claim 9, characterized in that: A threaded sleeve (306) is rotatably mounted on the mounting plate (305), and the threaded sleeve (306) is threadably connected to the screw rod frame (304).

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