Centerless grinding machine

Abstract

The utility model discloses a centerless grinding machine, relates to the field of grinding machines, and solves the problems that the length of a round bar material needing to be ground is far larger than that of a grinding wheel and a guide wheel, the other end of the round bar material is not limited and inserted or is held by hand for limiting, the stability in the grinding process is poor, and the grinding quality is influenced. A limiting structure is installed at the top of the workbench and comprises a round box and a fixing ring, a round cavity is formed in the center of the rear end face of the round box, the fixing ring is fixedly connected to the rear end face in the round box, three annularly-arranged inserting rods are slidably inserted into the outer side face of the fixing ring, and the inserting ends of the inserting rods are fixedly sleeved with a limiting plate. And the limiting plate is fixedly connected with the inner edge of the fixing ring through a compression spring, the compression spring is arranged at the insertion end of the insertion rod in a surrounding mode, the long round bar can be effectively prevented from shaking in the polishing process, timely adjustment can be conducted according to the polishing progress, and the consistency and stability of the polishing effect are ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of grinding machine, concretely to a centerless grinding machine. BACKGROUND

[0002] Centerless grinding machine is a kind of grinding machine without adopting the shaft positioning of workpiece to carry out grinding, mainly comprising grinding wheel, adjusting wheel and workpiece support three mechanisms, wherein grinding wheel actually undertakes the work of grinding, adjusting wheel controls the rotation of workpiece and controls the feed speed of workpiece, and as for workpiece support, it supports workpiece during grinding, and the three mechanisms can have several cooperation methods except stopping grinding, and are same in principle.

[0003] When the centerless grinding machine equipment needs to grind the round bar material whose length far exceeds the length of grinding wheel and guide wheel, the other end of the round bar is not limited to insert or hand-held to limit, and the grinding process has poor stability, which affects the grinding quality. UTILITY MODEL CONTENT

[0004] The utility model discloses a centerless grinding machine which can effectively prevent the long round bar from shaking during grinding, timely adjust according to the grinding progress, ensure the consistency and stability of grinding effect, and solve the problems in the background technology.

[0005] To achieve the above object, the utility model provides the following technical scheme: a centerless grinding machine, including grinding machine body, workstation and limiting structure, the workstation is installed on the front side and rear side door of grinding machine body, and the workstation top is installed with limiting structure, the limiting structure includes round box and fixed ring, the rear end surface center position of round box is equipped with circular cavity, the rear end surface inside round box is fixedly connected with fixed ring, the outer side surface of fixed ring is slidably inserted with three annularly arranged inserting rods, the inserting rod insertion end is fixedly sleeved with limiting plate, the limiting plate is fixedly connected with the inner edge of fixed ring through compression spring, the compression spring is arranged around the insertion end of inserting rod, the inner side surface of rotary ring is fixedly connected with three annularly arranged extruding blocks, the extruding blocks and inserting rods are staggered, the outer side of round box is installed with supporting structure, and the rotary ring is also installed with fixed structure.

[0006] Preferably, the front end surface of the round box is provided with a matching annular cover plate, and the abutting side surfaces of the round box and the annular cover plate are provided with magnet pieces, the annular cover plate can shield part of the components of the round box, so that the internal components are not completely exposed, the possibility of dust or iron filings generated during grinding falling into the round box is reduced, the frequency of cleaning operation is increased, and unnecessary workload is increased.

[0007] Preferably, the support structure includes a base plate, the base plate is bolted on the surface of the workbench, the top of the base plate is fixedly connected with two first screw rods, the top end of the first screw rod is provided with a protrusion, the protrusion is fixedly connected with the outer edge of the circular box, two first nuts are threadedly connected on the first screw rod, the adjusting mode can make the whole limiting structure horizontally move on the workbench, can be used for supporting the polishing of the circular bar within a certain length range, the application range is increased, and the practicality is increased.

[0008] Preferably, the fixing structure includes a backing plate, the outer side of the circular box is provided with an arc-shaped cavity, the backing plate is slidably connected in the arc-shaped cavity, the backing plate is fixedly connected with the outer edge of the rotating ring, and the second screw rod is fixedly connected with the outer side of the backing plate.

[0009] Preferably, the inner rear end face of the circular box is provided with a ring-shaped groove matched with the rotating ring, the rotating ring rotates in the matched ring-shaped groove, and the backing plate slides in the arc-shaped cavity, so that the rotating ring can stably rotate and does not move out of the circular box.

[0010] Preferably, one end of the inserting rod inserted into the fixing ring is in a circular arc shape, and the other end is in a triangular shape, the circular arc shape is tangent to the outer circular surface of the circular bar, no scratches are generated, the scratches generated on the surface of the circular bar during polishing are prevented, the product quality is affected, and the other end is in a triangular shape, so that horizontal directional component force is generated with the extruding block, and the inserting rod can be horizontally adjusted.

[0011] Compared with the prior art, the utility model has the advantages that:

[0012] The operator only needs to send the long circular bar into the inlet end of the grinding machine body, and after the long circular bar is fixed by the limiting structure, the grinding machine can be started to perform the polishing work, in the whole process, the limiting structure can not only effectively prevent the long circular bar from shaking during polishing, but also can be adjusted in time according to the polishing progress, so that the consistency and stability of the polishing effect are ensured. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a whole structure schematic view of the utility model;

[0014] Figure 2 It is a three-dimensional enlarged structure schematic view of other components in the utility model except the grinding machine body;

[0015] Figure 3 It is a three-dimensional enlarged structure schematic view of the limiting structure, the support structure and the fixing structure in the utility model;

[0016] Figure 4 It is an enlarged structure schematic view of the support structure in the utility model;

[0017] Figure 5The utility model discloses a limiting structure and fixed structure after the stereogram amplification structure schematic diagram of explosion decomposition in the utility model.

[0018] In the drawing: 1, grinding machine body; 2, worktable; 3, limiting structure; 301, round box; 302, extrusion block; 303, fixed ring; 304, insert rod; 305, compression spring; 306, rotating ring; 307, ring cover plate; 308, magnet piece; 309, limiting plate; 3010, circular cavity; 3011, annular groove; 4, support structure; 401, bottom plate; 402, first screw rod; 403, lug; 404, bolt; 405, first nut; 5, fixed structure; 501, second screw rod; 502, backing plate; 503, arc cavity; 504, second nut. DETAILED DESCRIPTION

[0019] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the utility model.

[0020] Please refer to Figure 1 、 Figure 2 、 Figure 3 And Figure 5The utility model provides a kind of centerless grinding machine shown in the drawing, including grinder body 1, workbench 2 and limiting structure 3, the workbench 2 is installed on the front side and rear side door of grinder body 1, limiting structure 3 is installed on the top of workbench 2, limiting structure 3 includes round box 301 and fixed ring 303, the center position of the rear end surface of round box 301 is equipped with circular cavity 3010, fixed ring 303 is fixedly connected in the rear end surface inside round box 301, three annularly arranged insertion rods 304 are slidably inserted in the outer side surface of fixed ring 303, insertion rod 304 insertion end is fixedly sleeved with limiting plate 309, limiting plate 309 is fixedly connected with the inner edge of fixed ring 303 by compression spring 305, compression spring 305 is arranged around insertion rod 304 insertion end, rotating ring 306 is rotatably connected on the inner side surface of round box 301, three annularly arranged extrusion blocks 302 are fixedly connected on the inner side surface of rotating ring 306, extrusion block 302 and insertion rod 304 are staggered, two round boxes 301 are installed at the center discharge position and feeding position of grinder body 1 respectively, when long round bar needs to be put into the inlet of grinder body 1 for feeding, first inserted into the center of round box 301 from circular cavity 3011, then manually rotate rotating ring 306, extrusion block 302 will extrude insertion rod 304, so that it moves towards the inside of fixed ring 303, ensure that three fixed rings 303 contact with the outer side surface of long round bar, so that the other end of long round bar can be limited during polishing on its surface, thereby reducing the possibility of shaking during polishing, and ensuring polishing quality. In addition, the design of limiting structure 3 also has flexibility and adaptability, insertion rod 304 can be adjusted according to different long round bar diameters under the action of compression spring 305, to realize close fitting, further improve the accuracy of polishing, and the rotating operation of rotating ring 306 is simple and fast, greatly improving work efficiency.

[0021] Please refer to Figure 2 and Figure 3 The front end surface of round box 301 is provided with a matching annular cover plate 307, and the abutting side surfaces of round box 301 and annular cover plate 307 are provided with magnet pieces 308.

[0022] Please refer to Figure 3 and Figure 4The outer edge side of the round box 301 is provided with a supporting structure 4, the supporting structure 4 comprises a bottom plate 401, the bottom plate 401 is installed on the surface of the workbench 2 through a bolt 404, the top of the bottom plate 401 is fixedly connected with two first screw rods 402, the top end of the first screw rod 402 is provided with a lug 403 in a penetrating mode, the lug 403 is fixedly connected with the outer edge of the round box 301, two first nuts 405 are threadedly connected on the first screw rod 402, it should be noted that the first nut 405 at the upper position is screwed out, the round box 301 is moved up and down, after being moved to a suitable height, the bottom first nut 405 is rotated to be in contact with the bottom of the lug 403, the first nut 405 at the upper position is screwed in again until the top of the lug 403 is contacted, so that the height adjustment and fixing are completed, the workbench 2 is provided with a threaded hole matched with the bolt 404, the bottom plate 401 can be fixed at an accurate position, the adjusting mode can enable the entire limiting structure 3 to be horizontally moved on the workbench 2, the round bar of a certain length range can be supported and polished, the application range is increased, and the practicability is improved.

[0023] Referring to Figure 3 and Figure 5 , the rotating ring 306 is further provided with a fixing structure 5, the fixing structure 5 comprises a backing plate 502, the outer side of the round box 301 is provided with an arc-shaped cavity 503, the backing plate 502 is slidably connected in the arc-shaped cavity 503, the backing plate 502 is fixedly connected with the outer edge of the rotating ring 306, the outer side of the backing plate 502 is fixedly connected with a second screw rod 501, the outer side of the second screw rod 501 is threadedly connected with a second nut 504, it should be noted that the second screw rod 501 is pulled by hand, the backing plate 502 can be moved in the arc-shaped cavity 503, so as to drive the rotating ring 306 to rotate, the second nut 504 is tightened, the fixing is completed, and the adjusting operation is simple and convenient.

[0024] Referring to Figure 5 , the inner rear end face of the round box 301 is provided with an annular groove 3011, the annular groove 3011 is matched with the rotating ring 306, it should be noted that the rotating ring 306 rotates in the matched annular groove 3011, and the backing plate 502 is slidably connected in the arc-shaped cavity 503, so that the rotating ring 306 can stably rotate and is not loosened and moved out from the round box 1.

[0025] Referring to Figure 3 and Figure 5 , one end of the inserting rod 304 inserted into the fixed ring 303 is in a circular arc shape, the circular arc shape is tangent to the outer circular surface of the round bar, no scratch is generated, the round bar surface polishing is prevented from being scratched, the product quality is affected, the other end is in a triangular shape, so that horizontal directional component force is generated with the extrusion block 302, the inserting rod 304 is horizontally moved and adjusted.

[0026] Working principle: when the long round bar needs to be put into the inlet of the grinding machine body 1 for feeding, first insert into the center of the circular box 301 from the circular cavity 3010, pull the second screw 501, can let the base plate 502 in the arc cavity 503 moves, thereby rotating the rotating ring 306, the extrusion block 302 extrudes the plug rod 304, makes it move towards the inside of the fixed ring 303, ensures that the three fixed rings 303 contact with the outer side surface of the long round bar, tightens the second nut 504, completes the fixation, in the process of grinding the surface of the long round bar, can limit the other end, thereby reducing the possibility of shaking in the process of grinding, ensuring the grinding quality.

[0027] It should be noted that in this document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0028] Although the embodiments of the present application have been shown and described, it is to be understood that for the purpose of the present application, the embodiments change, modify, replace and vary in many ways without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A centerless grinding machine comprising a machine body (1), a table (2) and a limiting structure (3), characterized in that, The grinder body (1) front side and rear side door are equipped with workbench (2), the workbench (2) top is equipped with limiting structure (3), limiting structure (3) includes round box (301) and fixed ring (303), the round box (301) rear end surface center position is equipped with circular cavity (3010), the round box (301) inside rear end surface is fixedly connected with fixed ring (303), the fixed ring (303) outer side surface is slidably inserted with three annularly arranged insertion rods (304), the insertion rod (304) insertion end is fixedly sleeved with limiting plate (309), the limiting plate (309) is fixedly connected with the inner edge of fixed ring (303) through compression spring (305), the compression spring (305) is arranged around the insertion end of insertion rod (304), the round box (301) inner side surface position is rotatably connected with rotary ring (306), the rotary ring (306) inner side surface is fixedly connected with three annularly arranged extrusion blocks (302), extrusion block (302) and insertion rod (304) staggered distribution, the round box (301) outer side is equipped with support structure (4), rotary ring (306) is also equipped with fixed structure (5).

2. A centerless grinding machine according to claim 1, characterized in that: The round box (301) front end surface is open, and the round box (301) front end surface is provided with a matching annular cover plate (307), and the round box (301) and the annular cover plate (307) are provided with magnet pieces (308) on the abutting sides.

3. A centerless grinding machine according to claim 1, wherein: The support structure (4) includes a bottom plate (401), and the bottom plate (401) is installed on the surface of the workbench (2) by bolts (404), and the top of the bottom plate (401) is fixedly connected with two first screw rods (402), and the top of the first screw rod (402) is provided with a protrusion (403), and the protrusion (403) is fixedly connected with the outer edge of the round box (301), and the first screw rod (402) is threadedly connected with two first nuts (405).

4. A centerless grinding machine according to claim 1, wherein: The fixed structure (5) includes a gasket (502), and the outer side surface of the round box (301) is provided with an arc-shaped cavity (503), and the gasket (502) is slidably connected in the arc-shaped cavity (503), and the gasket (502) is fixedly connected with the outer edge of the rotary ring (306), and the gasket (502) is fixedly connected with a second screw rod (501) on the outer side surface, and the second screw rod (501) is threadedly connected with a second nut (504) on the outer side surface.

5. A centerless grinding machine according to claim 1, wherein: The round box (301) inside rear end surface is equipped with annular groove (3011), and the annular groove (3011) is matched with the rotary ring (306).

6. A centerless grinding machine according to claim 1, wherein: The insertion rod (304) is inserted into the inner end of the fixed ring (303) and is arc-shaped, and the other end is triangular.

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