CN113681455B - Grinding and polishing tool - Google Patents

Abstract

The invention provides a grinding and polishing tool which comprises a positioning shaft used for connecting rotating equipment, wherein a grinding block is detachably connected to the positioning shaft, and a circular arc-shaped grinding working groove is formed in the grinding block. According to the invention, the outer circular surface on the workpiece to be processed is ground or polished through the rotation of the grinding block, so that the defect that the workpiece which is not a revolving body cannot be clamped on the existing grinding equipment for grinding is avoided; the grinding block is of an eccentric structure, the grinding working groove is in a circular arc shape, and the grinding block acts on the workpiece by centripetal force when rotating, so that the concentricity and the form and position tolerance of the processed workpiece are ensured to be good; the polishing tool is placed in the polishing working groove through the fixing part used for fixing the polishing tool arranged on the polishing block, and the workpiece can be polished, so that the tool is multipurpose; the tool has the advantages of simple structural design, easy operation, low cost and convenient use.

Description

A grinding and polishing tooling

technical field

The invention relates to the field of mechanical processing, in particular to a grinding and polishing tool.

Background technique

In production and processing, it is often necessary to grind and polish the outer circular surface of some non-rotating workpieces. Because it is difficult to find a suitable position on the non-rotating workpiece to fix it on the rotating equipment, so as to ensure Centering rotation of the outer circular surface. Therefore, it is impossible to use existing equipment such as conventional cylindrical grinding, centerless grinding or lathes to complete the processing of the outer circular surface on this type of non-rotating workpiece, and the use of equipment such as grinding wheels cannot ensure that the outer cylindrical surface of the non-rotating workpiece The concentricity and shape tolerance; using manual grinding and polishing is time-consuming and labor-intensive, and the efficiency is low, which brings great inconvenience to production and manufacturing.

Contents of the invention

In view of the above technical problems, the present invention proposes a grinding and polishing tool to solve the problem of inconvenient grinding of non-rotating workpieces in the prior art.

In order to achieve the above object, the technical solution of the present invention is achieved in that:

The utility model relates to a grinding and polishing tool, which includes a positioning shaft used for connecting a rotating device, a grinding block is detachably connected to the positioning shaft, and an arc-shaped grinding working groove is arranged on the grinding block.

Preferably, two grinding blocks are detachably connected to the positioning shaft, and the two grinding blocks are arranged rotationally symmetrically so that the grinding working grooves of the two grinding blocks are oppositely arranged.

Preferably, the grinding blocks are provided with U-shaped openings, and the grinding working groove of one of the two grinding blocks can be inserted into the U-shaped opening of the other so that the grinding working grooves of the two grinding blocks are oppositely arranged.

Preferably, the grinding block is also provided with a fixing part for fixing the polishing tool.

Preferably, the fixing portion is a screw hole.

Preferably, the grinding block is further provided with a communication groove, and the communication groove communicates the screw hole with the grinding working groove.

Preferably, the positioning shaft is provided with a limiting protrusion for limiting the grinding block.

Preferably, the limit protrusion is provided with a notch for the screw to pass through.

Preferably, it also includes an end cover sleeved on the outside of the grinding block, and the end cover is provided with an end cover protrusion extending inward to press the grinding block to the positioning shaft.

Preferably, the end cap is provided with a through hole communicating with the screw hole.

Preferably, the end cover is also connected to the positioning shaft through a compression connector, and the compression connector is detachably connected to the positioning shaft; the end of the compression connector near the end cover is provided with an inward compression protrusion for positioning the end The cover is compressed and fixed to the positioning shaft.

Preferably, the pressing connection part is screwed with the positioning shaft.

Beneficial effects of the present invention: the present invention grinds or polishes the outer circular surface of the processed workpiece through the rotation of the grinding block, avoiding the disadvantage that the non-revolving workpiece cannot be clamped on the existing grinding equipment for grinding; the grinding block It is set as an eccentric structure and the grinding working groove is arc-shaped. When the grinding block rotates, it acts on the workpiece by centripetal force to ensure good concentricity and shape tolerance of the workpiece to be processed; Putting the polishing tool in the grinding work tank can also perform polishing work on the workpiece, making the tooling multi-purpose; the tooling structure design is simple and easy to operate, the cost is low, and it is convenient to use; the tooling can not only be used for non-rotating workpieces, It can also be used for rotary workpieces.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a sectional view of the present invention;

Fig. 3 is the sectional view of grinding block of the present invention

Fig. 4 is the top view of grinding block of the present invention;

Fig. 5 is a three-dimensional schematic diagram of the positioning shaft of the present invention;

Fig. 6 is the front view of positioning shaft of the present invention;

Fig. 7 is the schematic diagram of the assembly of the positioning shaft and the grinding block of the present invention;

Fig. 8 is a sectional view of the end cap of the present invention;

Fig. 9 is a cross-sectional view of the compression connector of the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

As shown in Figures 1 to 9, a grinding and polishing tooling according to an embodiment of the present invention includes a positioning shaft 1 for connecting to a rotating device, a grinding block 4 is detachably connected to the positioning shaft 1, and a grinding block 4 is An arc-shaped grinding groove 41 is provided. The groove wall of the grinding groove 41 is the grinding surface, and the axial direction of the grinding groove 41 is consistent with the axial direction of the positioning shaft 1 . The rotating device can be a lathe or other devices that can drive the positioning shaft 1 to rotate. The rear end of the positioning shaft 1 is fixed on the rotating device, and the front end of the positioning shaft 1 is connected to the grinding block 4 to drive the grinding block 4 to rotate. When in use, extend the end of the workpiece to be ground into the grinding working groove 41 , and attach the outer circular surface of the workpiece to be ground to the groove wall of the grinding working groove 41 . The rotation of the grinding block 4 rotates relative to the workpiece to be processed, and grinds the outer circular surface of the workpiece to be processed, avoiding the disadvantage that the non-rotating workpiece cannot be clamped on the existing grinding equipment for grinding; and because the grinding work groove 41 is arc-shaped, and the centripetal force acts on the workpiece when the grinding block 4 rotates simultaneously, so as to ensure good concentricity and shape tolerance of the processed workpiece. The structure design of the tooling is simple, easy to operate, and convenient to use. The tooling can be used not only for non-revolving workpieces, but also for revolving workpieces.

Preferably, as shown in Figure 1 and Figure 7, two grinding blocks 4 are detachably connected to the positioning shaft 1, each grinding block 4 is an eccentric structure, and the two grinding blocks 4 are arranged in a rotational symmetry to form an approximate "mutual ” font structure, so that the grinding working grooves 41 of the two grinding blocks 4 are arranged oppositely. Two arc-shaped grinding work grooves 41 are arranged opposite to form a circular circular surface, and there is a certain gap between the two grinding blocks 4, so that there can be a small amount of displacement between the two grinding blocks 4 when rotating . Since the two grinding blocks 4 have an eccentric structure and are arranged in an approximate "mutual" shape, when rotating, the two grinding working grooves 41 generate a certain centripetal force under the action of the eccentric part, so that the grinding surface is pressed against the workpiece for grinding. Grinding can improve the concentricity when processing the workpiece.

Preferably, as shown in FIGS. 1 and 3 , the grinding block 4 is provided with a U-shaped opening 43 , and the opening of the grinding working groove 41 on each grinding block 4 faces the U-shaped opening 43 and is aligned with the U-shaped opening 43 Communication; when the two grinding blocks 4 are rotationally symmetrically arranged at the front end of the positioning shaft 1, the grinding working groove 41 of one of the two grinding blocks 4 can be embedded in another U-shaped opening 43 so that the two grinding blocks 4 The grinding working groove 41 is just oppositely arranged to form a circular circular surface.

Preferably, as shown in Fig. 5 and Fig. 7, the positioning shaft 1 is provided with a position-limiting protrusion 11 which limits the position of the grinding block 4, and a positioning groove matching the shape of the grinding block 4 is formed between the position-limiting protrusions 11 . In this embodiment, there is a small gap between the limiting protrusion 11 and the grinding block 4, so that the two grinding blocks can rotate within a certain range.

Preferably, as shown in Fig. 1, Fig. 2 and Fig. 8, it also includes an end cap 3 sleeved on the outside of the grinding block 4, and the end cap 3 is provided with an inwardly extending annular end cap protrusion to hold the grinding block 4 Pressing against the positioning shaft 1, the end cover 3 is detachably connected with the positioning shaft 1. The grinding block 4 is provided with an annular groove matching with the protrusion of the end cap. During assembly, there is a small gap between the groove and the protrusion of the end cover, which does not hinder the mutual rotation of the two grinding blocks within a certain range.

The difference between Embodiment 2 and Embodiment 1 is that, as shown in Figure 2 and Figure 9, the end cover 3 is also connected to the positioning shaft 1 through the compression connector 2, and the compression connector 2 and the positioning shaft 1 can be Disconnect the connection; the end of the compression connector 2 close to the end cover 3 is provided with an inward compression protrusion for pressing and fixing the end cover 3 to the positioning shaft 1 . In this embodiment, one end of the end cover 3 close to the compression connector 2 is provided with an outwardly extending annular protrusion. The pressing protrusion presses on the annular protrusion so as to securely connect the end cover 3 with the positioning shaft 1 . In this embodiment, the pressing connection part 2 is threadedly connected with the positioning shaft 1 .

The installation and use steps of this embodiment are as follows:

First use gasoline and then alcohol to clean all parts, then dry them with clean compressed air, clamp the rear end of the positioning shaft on the lathe (or rotating equipment), and then place the grinding block 4 in the positioning groove of the positioning shaft 1 . Then install the end cover 3 on the grinding block 4 as shown in the figure, and then install the compression connector 2 on the positioning shaft 1, and apply an appropriate amount of grinding paste evenly on the groove wall of the grinding work groove 41 on the grinding block; 1. Place the workpiece to be ground in the grinding working groove 41 of the two grinding blocks 4, and start the lathe (or rotating equipment) for grinding until the effect is achieved.

Embodiment 3, as shown in FIG. 1 , FIG. 3 and FIG. 7 , differs from Embodiment 2 in that the grinding block 4 is further provided with a fixing portion 42 for fixing a polishing tool. In this embodiment, the fixing portion 42 is a screw hole, and the grinding block 4 is further provided with a communication groove 44 , which passes through the bottom of the U-shaped opening to communicate the screw hole with the grinding working groove 41 . And between the limit protrusions 11, there is also a gap 12 for the screw to pass through; the end cover 3 is provided with a through hole 31 communicated with the screw hole, and the through hole 31 communicates with the screw hole axially to facilitate the screw to be extended from the through hole 31. into the screw hole.

The installation and use steps of this embodiment are as follows:

First clean all parts with gasoline and then alcohol, then dry them with clean compressed air, clamp the rear end of the positioning shaft 1 on the lathe (or rotating equipment), and spread the gauze (or abrasive tools such as sandpaper) on the grinding surface In the grinding working groove 41 of the block 4, the end of the grinding tool is fixed in the screw hole 42 of the grinding block 4 with screws, and the grinding block 4 is installed in the positioning groove of the positioning shaft 1 again. Then the end cover 3 is installed on the grinding block 4 as shown in the figure, and the compression connector 2 is installed on the positioning shaft 1 to complete the installation. When in use, place the workpiece to be processed in the grinding working groove 41 of the two grinding blocks 4, and start the lathe (or rotating equipment) to polish until the effect is achieved.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of the present invention. within the scope of protection.

Claims (8)

1. The grinding and polishing tool is characterized by comprising a positioning shaft (1) for connecting rotating equipment, wherein a grinding block (4) is detachably connected to the positioning shaft (1), and a circular arc-shaped grinding working groove (41) is formed in the grinding block (4); two grinding blocks (4) are detachably connected to the positioning shaft (1); the grinding blocks (4) are provided with U-shaped openings (43), and the opening of the grinding working groove (41) on each grinding block (4) faces the U-shaped opening (43) and is communicated with the U-shaped opening (43); when the two grinding blocks (4) are arranged at the front end of the positioning shaft (1) in a rotationally symmetrical way, the grinding working groove (41) of one of the two grinding blocks (4) can be embedded into the U-shaped opening (43) of the other grinding block so that the grinding working grooves (41) of the two grinding blocks (4) are oppositely arranged; each grinding block (4) is of an eccentric structure, and the two grinding blocks (4) are arranged in a rotationally symmetrical way to form an approximate cross-shaped structure; the two circular arc-shaped grinding working grooves (41) are oppositely arranged to form a circular surface, and a gap is reserved between the two grinding blocks (4), so that a small amount of displacement can be generated between the two grinding blocks (4) during rotation; the two grinding working grooves (41) generate centripetal force under the action of the eccentric part, so that the grinding surface is pressed on the workpiece for grinding.

2. The grinding and polishing tool according to claim 1, wherein the grinding block (4) is further provided with a fixing portion (42) for fixing a polishing tool.

3. The lapping tool of claim 2, wherein the fixing portion (42) is a screw hole.

4. A lapping tool as claimed in claim 3, wherein the lapping block (4) is further provided with a communication groove (44), the communication groove (44) communicating the screw hole with the lapping working groove (41).

5. The grinding and polishing tool according to any one of claims 1 to 4, wherein the positioning shaft (1) is provided with a limiting protrusion (11) for limiting the grinding block (4).

6. The grinding and polishing tool according to claim 5, further comprising an end cover (3) sleeved on the outer side of the grinding block (4), wherein an inwardly extending end cover protrusion is arranged on the end cover (3) to press the grinding block (4) towards the positioning shaft (1).

7. The grinding and polishing tool according to claim 6, wherein the end cover (3) is further connected with the positioning shaft (1) through a pressing connecting piece (2), and the pressing connecting piece (2) is detachably connected with the positioning shaft (1); one end of the compression connecting piece (2) close to the end cover (3) is provided with an inward compression bulge which is used for pressing the end cover (3) to the positioning shaft (1) for compression fixation.

8. The grinding and polishing tool according to claim 7, wherein the pressing connection piece (2) is in threaded connection with the positioning shaft (1).

Images