CN219380129U - Chamfering, positioning and polishing tool for non-circular curved surface - Google Patents

Abstract

The utility model provides a chamfer location grinding tool for non-circular curved surface, belong to grinding tool technical field, including the grinding tool, the grinding tool includes grinding tool body and grinding head, still include the locating sleeve, the locating sleeve cover is outside the grinding tool, the locating sleeve includes lower part fixed sleeve and upper portion locating sleeve, the fixed sleeve of lower part corresponds the cover outside the grinding tool body and with the little clearance fit back fixed connection of grinding tool body, upper portion locating sleeve corresponds the cover outside the grinding head, be equipped with the location notch on the section of thick bamboo wall of upper portion locating sleeve according to the product by the size requirement of chamfer of polishing. The utility model solves the problem that the dimension and the angle of the chamfering process of the non-circular curved surface are difficult to control, and has the advantages of simple structure, novel design, easy operation, low production cost, high processing precision, stable and reliable quality, high processing efficiency and convenient popularization and use.

Description

Chamfering, positioning and polishing tool for non-circular curved surface

Technical Field

The utility model belongs to the technical field of polishing tools, and particularly relates to a chamfering positioning polishing tool for a non-circular curved surface.

Background

In the mechanical manufacturing parts, a large number of non-circular curved surfaces exist, and chamfering is often needed to be processed in the design process of the non-circular curved surfaces so as to remove burrs, such as burrs of a certain type of diesel engine cam shaft and other moving parts, in order to prevent the working surfaces from being damaged by the burrs and acute angles of the cam profile in the process of mutual movement of the cam and the roller, the two sides of the cam profile are required to be chamfered, the surface quality of the chamfer is required to be high, and the surface roughness value cannot be larger than Ra1.6. The chamfer size is consistent, the chamfer angle and the chamfer size are consistent, and the requirements of drawing are met. The simplified structure of the parts is shown in figure 3.

Chamfering of non-circular curved surfaces cannot be achieved with common equipment. The existing processing methods have two kinds: the machining method is to equip special tools and programs for machining on a numerical control machine tool, and machining precision is guaranteed by the numerical control programs and machining precision of the machine tool. Therefore, numerical control equipment is required to be occupied, non-circular curved surface programming is required, for non-circular curved surfaces with complex molded lines, technical preparation workload is large, special tools are required to be equipped, for parts with hardness exceeding 40HRC, the common tools cannot meet processing requirements, special hard alloy tools are required to be customized, the tool wear is rapid in the processing process, and the manufacturing cost is high. Another processing method is to use a pneumatic polisher to polish manually, and ensure accuracy by means of hand feeling and visual inspection of operators. The polishing tool cannot accurately position during polishing by a manual method, the length and the angle size of the chamfer of the processed part are controlled by means of manual visual observation, the error is large, the quality of products is not easy to control, the phenomenon that the length size of the chamfer and the angle of the processed part are out of tolerance exists, and the quality of products is not guaranteed. There is therefore a need for improvements.

Disclosure of Invention

The utility model solves the technical problems that: the utility model provides a chamfering positioning polishing tool for a non-circular curved surface, which solves the problem that the dimension and the angle of the chamfering processing process of the non-circular curved surface are difficult to control, and has the advantages of simple structure, novel design, easy operation, low production cost, high processing precision, stable and reliable quality, high processing efficiency and convenient popularization and use.

The utility model adopts the technical scheme that: a chamfer location grinding tool for non-circular surface, including the grinding tool, the grinding tool includes grinding tool body and grinding head, still includes the positioning sleeve, the positioning sleeve cover is outside the grinding tool, the positioning sleeve includes lower part fixed sleeve and upper portion positioning sleeve, the fixed sleeve of lower part corresponds the cover outside the grinding tool body and with the little clearance fit back fixed connection of grinding tool body, upper portion positioning sleeve corresponds the cover outside the grinding head, be equipped with the location notch according to the product on the section of thick bamboo wall of upper portion positioning sleeve by the size requirement of chamfer of polishing.

For the preferable mode of above-mentioned scheme, the grinding tool adopts standard pneumatic grinding tool, and corresponding the grinding head adopts cylindrical grinding wheel bistrique, correspondingly, upper portion positioning sleeve is cylindrical tubular structure and cover in the outside of cylindrical grinding wheel bistrique.

In a preferred mode of the above scheme, the positioning notch is aligned with the middle of the cylindrical grinding wheel grinding head.

In the preferable mode of the scheme, the included angle between the locating edge of the locating notch and the central line of the upper locating sleeve is the same as the specified chamfering angle on the product part graph, and the shape of the locating notch is the same as the shape of the edge located on the product part.

In the preferable mode of the scheme, the positioning tongue piece used for prolonging the length of the positioning edge is fixedly arranged outside the positioning notch on the upper positioning sleeve, and the extending direction of the positioning tongue piece is consistent with the direction of the positioning edge on the positioning notch.

In the preferable mode of the scheme, the lower fixing sleeve is of a cylindrical barrel structure, two or more screw holes are formed in the cylindrical surface of the lower fixing sleeve, and the lower fixing sleeve is fixedly connected with the polishing tool body through the screw holes by fastening screws.

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

1. according to the scheme, the pneumatic polishing tool is combined with the positioning sleeve, so that the common equipment and the cutter are improved, and the polishing tool can keep a required angle and a certain distance with a polished part in the polishing process, so that the length dimension of a chamfer angle is ensured, the processing of a non-circular curved surface chamfer angle is realized, the manufacturing cost of the part is reduced, the efficient processing requirement is met, and the problem that the angle and the dimension are not easy to control in the processing process of the non-circular curved surface chamfer angle is effectively solved;

2. according to the scheme, through accurate positioning of the chamfering tool, the problems that the consistency of the manually polished size is poor and the machining quality of a product is not easy to ensure are solved, the consistency of the chamfer size of the machined part is good, and the design requirement is met;

3. the cylindrical grinding wheel grinding head of the pneumatic grinding tool can be used for machining the quenched high-hardness part, machining of the part chamfer with the non-circular curved surface and with the hardness of more than 40HRC is achieved, the machined part is high in size precision, stable in quality and high in machining efficiency, design requirements are met, and machining cost is low.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic view of a positioning sleeve according to the present utility model;

FIG. 3 is a schematic view of a camshaft of a diesel engine according to an embodiment of the present utility model;

FIG. 4 is a diagram illustrating the profile construction of the cam shown in S1-S1 of FIG. 3 in accordance with the present utility model;

FIG. 5 is a diagram illustrating the profile construction of the cam shown in S2-S2 of FIG. 3 in accordance with the present utility model.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, in this document, 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 may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The inclusion of an element as defined by the phrase "comprising one does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.

Referring to fig. 1-5, embodiments of the present utility model are described in detail.

Example 1:

the present embodiment will be described in detail with reference to the processing of a camshaft structure of a diesel engine.

As shown in fig. 3, the structure of a camshaft 4 of a diesel engine of this embodiment is shown, in which a chamfering processing portion 4-1 of the cam profile is shown, fig. 4 and 5 are cam profile structure diagrams of S1-S1 and S2-S2 on the camshaft 4, the processing element portion surface roughness is required to be ra1.6um, and the chamfering is required to be 2×45 °.

The chamfering positioning polishing tool for the non-circular curved surface comprises a polishing tool 1, wherein the polishing tool 1 comprises a polishing tool body 1-1 and a polishing head 1-2.

Preferably, the polishing tool 1 adopts a standard pneumatic polishing tool, and the corresponding polishing head 1-2 adopts a cylindrical grinding wheel grinding head.

The pneumatic polishing tool in the embodiment adopts the cylindrical grinding wheel grinding head and can be used for processing the chamfer of the part with higher hardness.

Still include positioning sleeve 2, positioning sleeve 2 cover is outside burnisher 1 for carry out the accurate positioning to pneumatic burnisher, the accurate high-efficient processing of non-circular curved surface chamfer is realized to usable pneumatic burnisher through positioning sleeve 2 location.

Wherein the positioning sleeve 2 comprises a lower fixing sleeve 2-1 and an upper positioning sleeve 2-2, see fig. 2.

The lower fixing sleeve 2-1 is correspondingly sleeved outside the polishing tool body 1-1 and is fixedly connected with the polishing tool body 1-1 after being in small clearance fit.

Preferably, the lower fixing sleeve 2-1 is in a cylindrical barrel structure, two or more screw holes 2-5 are formed in the cylindrical surface of the lower fixing sleeve 2-1, and the fastening screw 3 fixedly connects the lower fixing sleeve 2-1 with the polishing tool body 1-1 through the screw holes 2-5.

In the embodiment, the lower fixing sleeve 2-1 and the polishing tool body 1-1 are reliably connected and positioned by fixing the fastening screw 3 and the screw hole 2-5.

The upper positioning sleeve 2-2 is of a cylindrical barrel structure and is sleeved outside the cylindrical polishing head 1-2.

Preferably, the cylinder wall of the upper positioning sleeve 2-2 is provided with a positioning notch 2-3 according to the size requirement of the polished chamfer of the product.

Preferably, the position of the positioning notch 2-3 is aligned with the middle part of the cylindrical grinding wheel grinding head, and the included angle between the positioning edge of the positioning notch 2-3 and the central line of the upper positioning sleeve 2-2 is the same as the chamfering angle specified on the product part drawing, so as to ensure that the chamfering angle of the machined part is correct. The shape of the positioning notch 2-3 is the same as the shape of the edge positioned on the product part, and the depth size of the positioning notch is determined through computer simulation drawing, so that the chamfer size meets the drawing requirement.

Preferably, a positioning tongue piece 2-4 for extending the length of the positioning edge is fixedly arranged outside the positioning notch 2-3 on the upper positioning sleeve 2-2, and the extending direction of the positioning tongue piece 2-4 is consistent with the direction of the positioning edge on the positioning notch 2-3.

In this embodiment, in order to make the location between positioning sleeve and the part more reliable, designed the location tongue piece on positioning sleeve, increase location length, make the pneumatic grinding tool location more reliable in the process of polishing.

The use principle is as follows: before machining, the positioning sleeve 2 is firstly arranged on the polishing tool 1, so that the positioning notch 2-3 of the positioning sleeve 2 is aligned with the middle part of the cylindrical grinding wheel grinding head, and the fastening screw 3 is screwed down, so that the positioning between the positioning sleeve 2 and the polishing tool is reliable; the positioning notch 2-3 of the positioning sleeve 2 is lapped on the edge of the part needing chamfering, the positioning notch 2-3 and the positioning tongue edge 2-4 of the positioning sleeve 2 are gradually overlapped with the edge of the part in a grinding process, so that the chamfering angle and the chamfering size machined by the part are kept consistent, the efficient and accurate machining of the chamfering of the non-circular curved surface part is realized, and the machining advantage of the non-circular curved surface part is more obvious.

The polishing tool is applied to the processing process of the cam profile chamfer of the camshaft cam of a certain diesel engine, achieves good effects, is gradually popularized to the processing of the cam profile chamfer of the camshaft cam of other diesel engines, and has the advantages of novel and reasonable tool structure, wide application range and higher popularization value through practice.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims (6)

1. A chamfer location grinding tool for non-circular curved surface, includes grinding tool (1), grinding tool (1) are including grinding tool body (1-1) and polishing head (1-2), its characterized in that: still include positioning sleeve (2), positioning sleeve (2) cover is outside burnisher (1), positioning sleeve (2) are including lower part fixed sleeve (2-1) and upper portion positioning sleeve (2-2), lower part fixed sleeve (2-1) correspond the cover outside burnisher body (1-1) and with little clearance fit back fixed connection of burnisher body (1-1), upper portion positioning sleeve (2-2) correspond the cover outside burnisher head (1-2), be equipped with location notch (2-3) on the section of thick bamboo wall of upper portion positioning sleeve (2-2) according to the size requirement of product by the chamfer of polishing.

2. The chamfer positioning grinding tool for non-circular curves according to claim 1, wherein: the polishing tool (1) adopts a pneumatic polishing tool, the corresponding polishing head (1-2) adopts a cylindrical grinding wheel grinding head, and correspondingly, the upper positioning sleeve (2-2) is of a cylindrical structure and is sleeved outside the cylindrical grinding wheel grinding head.

3. The chamfer positioning grinding tool for non-circular curves according to claim 2, wherein: the positioning notch (2-3) is aligned with the middle part of the cylindrical grinding wheel grinding head.

4. A chamfer positioning grinding tool for non-circular curves according to claim 3, wherein: the included angle between the locating edge of the locating notch (2-3) and the central line of the upper locating sleeve (2-2) is the same as the specified chamfering angle on the product part graph, and the shape of the locating notch (2-3) is the same as the shape of the edge located on the product part.

5. The chamfer positioning grinding tool for non-circular curves according to claim 4, wherein: the upper positioning sleeve (2-2) is fixedly provided with a positioning tongue piece (2-4) for prolonging the length of a positioning edge outside the positioning notch (2-3), and the extending direction of the positioning tongue piece (2-4) is consistent with the direction of the positioning edge on the positioning notch (2-3).

6. The chamfer positioning grinding tool for non-circular curves according to claim 1, wherein: the lower fixing sleeve (2-1) is of a cylindrical barrel structure, two or more screw holes (2-5) are formed in the cylindrical surface of the lower fixing sleeve (2-1), and the lower fixing sleeve (2-1) is fixedly connected with the polishing tool body (1-1) through the screw holes (2-5) by the fastening screws (3).