CN210189370U - Step grinding machine - Google Patents

Abstract

The utility model provides a step grinder, include the frame and install the first bearing on the frame, still include first grinding apparatus unit and second grinding apparatus unit. The first grinder unit and the second grinder unit are sequentially mounted on the first bearing, wherein the radial dimension of the first grinder unit is smaller than that of the second grinder unit. The workpiece to be polished can be roughly ground by the first grinding tool unit and then finely ground by the second grinding tool unit, and the surface of the workpiece can be polished at one time.

Description

Step grinding machine

Technical Field

The utility model relates to a grinding machine specifically relates to a step grinding machine that can once only polish the work piece.

Background

In order to achieve certain aesthetic or technical requirements on the surface of the product, such as surface finish, it is generally necessary to treat the surface of the workpiece with an abrasive device. For example, many types of water purifiers use pp cotton filter elements, which are typically treated with a knife or other abrasive to provide a smooth surface. In the prior art, the surface treatment of a workpiece, for example, the surface treatment of a pp cotton filter element, generally employs a two-step grinding process, wherein the first step is to perform rough grinding on the surface, and the second step is to perform fine grinding. Correspondingly, the existing grinding machine generally comprises two grinding units, namely a coarse grinding unit and a fine grinding unit, and the two grinding units are arranged separately, so that the grinding machine is large in size, and time and labor are consumed when a workpiece needs to be moved in use.

Therefore, a grinding machine capable of grinding a workpiece at one time is required to be developed.

SUMMERY OF THE UTILITY MODEL

One of the objectives of the present invention is to provide a step grinder which can polish a workpiece at a time.

According to an aspect of the utility model, a step grinder is provided, include the frame and install the first bearing on the frame, still include first grinding apparatus unit and second grinding apparatus unit. The first grinding tool unit and the second grinding tool unit are sequentially arranged and mounted on the first bearing, wherein the radial size of the first grinding tool unit is smaller than that of the second grinding tool unit.

In one embodiment, the first abrasive tool unit comprises n1 spaced apart first abrasive tools and the second abrasive tool unit comprises n2 spaced apart second abrasive tools, wherein n1 is less than n 2. Preferably, n 1: n2 < (1: 3), where preferably n 1: n2 is 1: 4.

Alternatively, the first grinder unit 12 includes a first grinder 121 of L1 length and the second grinder unit 13 includes a second grinder 131 of L2 length. Wherein L1 is less than L2. Preferably, L1: L2 < (1: 3), wherein preferably L1: L2 is 1: 4.

In one embodiment, the radial dimensions of the first and second grinder units differ by between 1mm and 5mm, wherein preferably the radial dimensions of the first and second grinder units differ by between 2mm and 3 mm.

In one embodiment, the first spindle is configured to drive the first grinder unit and the second grinder unit to rotate and move horizontally along the extending direction of the first spindle. The step grinding machine further comprises a second main shaft, the second main shaft is arranged in parallel with the first main shaft, and the second main shaft is used for installing a workpiece to be ground and can drive the workpiece to rotate.

The utility model discloses have following beneficial effect: the first main shaft of the step grinder is simultaneously provided with the first grinding tool unit and the second grinding tool unit, and the radial size of the first grinding tool unit is smaller than that of the second grinding tool unit, so that a workpiece to be ground can be roughly ground by the first grinding tool unit and then finely ground by the second grinding tool unit, and the surface of the workpiece is ground at one time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the following drawings only show some embodiments of the present invention by way of example, and that other drawings can be obtained by those skilled in the art without inventive work. Moreover, these drawings should not be construed as limiting the invention in any way.

FIG. 1 shows a schematic view of a part of the structure of the step grinder of the present invention;

fig. 2 shows a part of the structure schematic diagram of the step grinder in the use state of the invention.

Detailed Description

It should be noted that the following embodiments are exemplary illustrations of the present invention, and features in different embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with specific embodiments.

As shown in fig. 1, according to an embodiment of the present invention, the step grinder 100 includes a machine base 10 and a first spindle 11 mounted on the machine base 10, and further includes a first grinder unit 12 and a second grinder unit 13. The first grinder unit 12 and the second grinder unit 13 are sequentially arranged and mounted on the first spindle 11, wherein the radial dimension of the first grinder unit 12 is smaller than the radial dimension of the second grinder unit 13.

Alternatively, as shown in fig. 1, the first grinder unit 12 includes n1 spaced first grinders 121, such as a burr, a carbide saw blade, etc.; the second grinding tool unit 13 includes n2 spaced second grinding tools 131, such as grinding wheels, grinding knives, carbide saw blades, etc. The first and second grinders 121 and 131 are arranged and mounted on the first spindle 11. Wherein n1 is less than n2, preferably n 1: n2 < (1: 3), according to the design verification of the inventor, when the number ratio n 1: n2 of the grinding tools included in the first grinding tool unit 12 and the second grinding tool unit 13 is 1: 4, the comprehensive effect of better grinding effect and grinding tool ratio can be obtained.

In another embodiment, the first abrasive tool unit 12 may also include a length L1 of the first abrasive tool 121, such as a length of rollers; the second grinder unit 13 includes a length L2 of second grinders 131, such as a length of rollers. Wherein L1 is less than L2. Preferably, L1: L2 < (1: 3). According to the design verification of the inventor, when the length ratio L1: L2 of the first grinding tool unit 12 to the second grinding tool unit 13 is 1: 4, the comprehensive effect of better grinding effect and grinding tool proportion can be obtained.

In different embodiments, the first grinding tool 121 and the second grinding tool 131 may be grinding tools made of the same material, or grinding tools made of different materials according to different requirements; the die-cutting performance of the grinding tool can be the same or different. Preferably, the first grinding tool 121 is a grinding tool with the same material and the same die cutting performance, and the second grinding tool 131 is a grinding tool with the same material and the same die cutting performance. The centers of the first grinding tool 121 and the second grinding tool 131 may have a circular hole, which is sleeved on the first main shaft 11, then fixed on the first bearing 16 by the bolt 15, and then integrally mounted on the machine base 10 by the first bearing 16.

The radial dimensions of the first and second grinder units 12, 13 differ by 1mm to 5 mm. Preferably, the radial dimensions of the first and second grinder units 12, 13 differ by 2mm to 3 mm. The radial dimension refers to a dimension from the outer circumferential surfaces of the first grinder unit 12 and the second grinder unit 13 to the center of the first main shaft 11. If the cross-section of the first and second grinder units 12, 13 perpendicular to the first main axis 11 is circular, the radial dimension is the radius of the circle.

A gasket 14 is respectively arranged between two adjacent first grinding tools and two adjacent second grinding tools, namely between two adjacent first grinding tools, between two adjacent second grinding tools and between two adjacent first grinding tools and second grinding tools, and the gasket 14 is installed on the first main shaft 11. The grinding tool can be separated by the gasket, so that the fragments ground and cut on the surface of the workpiece can be conveniently discharged, and the phenomenon of overheating caused by the fact that the fragments are pushed on the spindle in the grinding process is prevented.

The first spindle 11 is arranged to carry the first grinder unit 12 and the second grinder unit 13 in a rotating movement, and at the same time, can be moved horizontally in the direction of extension of the first spindle, if necessary. It is understood that the first spindle 11 is driven by a power structure (not shown), and the description thereof is omitted as the technology is well known in the art. The first spindle 11 is thus able to carry the first and second grinder units 12, 13 in a rotational movement and/or to move horizontally in the direction of extension of the first spindle 11.

The step grinder 100 further comprises a second spindle 21, the second spindle 21 is arranged in parallel with the first spindle 11, and the second spindle 21 is configured to mount a workpiece 30 to be ground and can drive the workpiece 30 to rotate.

Thus, in the grinding operation, as shown in fig. 2, for example, the first grinder unit 12 on the first main shaft 11 is first brought into contact with the leftmost portion of the workpiece 30, the first main shaft 11 rotates in the same direction as the second main shaft 21, and the first grinder unit 12 performs rough grinding on the outer surface of the workpiece 30; then, the first spindle 11 may be horizontally moved in the first spindle extending direction from left to right during the rotational grinding. Or after stopping the rotation of the first main shaft 11, the first main shaft 11 is horizontally moved from left to right along the first main shaft extending direction. The second grinder unit 13 is thus brought into contact with the roughly ground outer surface of the workpiece 30, the first spindle 11 is rotated in the same direction as the second spindle 21, and the first grinder unit 12 finely grinds the roughly ground outer surface of the workpiece 30.

The first grinder unit 12 and the second grinder unit 13 of different radial sizes are rotated in synchronization, and while rotating, the first spindle 11 or the integral tool holder on which the first spindle 11 is mounted is moved from left to right, so that the workpiece 30 on the second spindle 21 is ground by grinders of different diameters such as blades. After the first spindle 11 or the integral tool holder on which the first spindle 11 is mounted is moved from the leftmost side to the rightmost side, the workpiece 30 is ground into a product having a uniform diameter.

The step grinder 100, in addition to the rotation of the first and second grinder units 12 and 13, also moves the first and second grinder units 12 and 13 in the axial direction, achieves the grinding of the workpiece 30 into a product having a uniform diameter in one operation, thereby reducing the grinding action. For example if need polish 5mm to the work piece, polish 3mm earlier, polish 2mm again and realize, and prior art is that two different stations polish respectively, the utility model discloses step grinder 100 polishes in proper order and realizes on same station. This can be used to produce products of the same axial diameter, such as filter cartridges of smooth diameter.

Therefore, the workpiece to be polished can be subjected to rough grinding by the first grinding tool unit and fine grinding by the second grinding tool unit without complex operation, and the surface of the workpiece is polished at one time. The utility model discloses a this step grinding machine can avoid moving or removing of work piece and required space and manpower when polishing, especially has special advantage to longer work piece.

For example, the applicant has desired to produce a pp cotton filter element for a water purifier, which has a certain length, for example 2m, and a certain flexibility during the manufacturing process, so that it is not easy to handle. Therefore, the two-step grinding separation process of the prior art is inconvenient. And on the step grinder of the utility model, the pp cotton filter core can be removed without moving, and the two-step grinding inconvenience of the prior art is overcome by moving the grinding tool unit.

It is to be understood that the above-described embodiments are merely illustrative and not restrictive of the current invention, and that modifications and variations may be resorted to without departing from the spirit and scope of the invention as those skilled in the art readily understand. Such modifications and variations are considered to be within the purview and scope of the invention and the appended claims. The scope of protection of the invention is defined by the appended claims. Furthermore, any reference signs in the claims shall not be construed as limiting the scope of the invention. Use of the verb "comprise" and its conjugations does not exclude the presence of elements or steps other than those stated in a claim. The indefinite article "a" or "an" preceding an element or step does not exclude the presence of a plurality of such elements or steps.

Claims (11)

1. The step grinder comprises a base and a first spindle mounted on the base, and is characterized by further comprising a first grinder unit and a second grinder unit, wherein the first grinder unit and the second grinder unit are sequentially arranged on the first spindle, and the radial size of the first grinder unit is smaller than that of the second grinder unit.

2. The step grinder of claim 1, wherein the first grinder unit includes n1 spaced first grinder tools and the second grinder unit includes n2 spaced second grinder tools, wherein n1 is less than n 2; alternatively, the first grinder unit 12 includes a first grinder 121 of L1 length and the second grinder unit 13 includes a second grinder 131 of L2 length, wherein L1 is less than L2.

3. The step grinder of claim 2, wherein n 1: n2 < (1: 3), or L1: L2 < (1: 3).

4. The step grinder of claim 3, wherein n 1: n2 is 1: 4 or L1: L2 is 1: 4.

5. The step grinder of claim 1, wherein the first and second grinder units differ in radial dimension by 1mm to 5 mm.

6. The step grinding machine of claim 5, wherein the radial dimensions of the first and second grinder units differ by between 2mm and 3 mm.

7. The step grinder of claim 2, wherein a spacer is disposed between adjacent first and second grinding tools, the spacer being mounted on the spindle.

8. The step grinder of claim 1, wherein the first spindle is configured to carry the first and second grinder units in rotational movement and in horizontal movement along the direction of extension of the first spindle.

9. The step grinding machine of claim 1, further comprising a second spindle arranged parallel to the first spindle, the second spindle being arranged to receive a workpiece to be ground and to impart rotational movement thereto.

10. The step grinder of claim 9, wherein the workpieces to be ground have the same radial dimension after being ground by the step grinder.

11. The step grinder of any one of claims 1 to 10, wherein the first and second grinder units each include a plurality of carbide saw blades.

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