CN219292840U

CN219292840U - Ball end mill with length adjusting function

Info

Publication number: CN219292840U
Application number: CN202223350617.5U
Authority: CN
Inventors: 谢志强; 张秋莲; 谢嘉琪
Original assignee: Balchals Precision Technology Changzhou Co ltd
Current assignee: Balchals Precision Technology Changzhou Co ltd
Priority date: 2022-12-14
Filing date: 2022-12-14
Publication date: 2023-07-04
Anticipated expiration: 2032-12-14

Abstract

The utility model discloses a ball end mill with a length adjusting function, which comprises a cutter head body, a cutter bar assembly and a connector. The beneficial effects of the utility model are as follows: according to the cutter bar assembly, in the actual use process, different numbers of connecting rods can be connected according to actual milling requirements, so that the milling depth of the milling cutter can be adjusted, further, the deeper position of a workpiece can be milled, in addition, when the milling cutter is connected, the idler wheel can rotate in the annular groove I, the sliding plate presses the idler wheel downwards along with the screw thread groove I screwed into the screw thread groove, and repulsive force exists between the connecting rods and the cutter head body, so that the firmness of connection between the connecting rods and the cutter head body can be improved.

Description

Ball end mill with length adjusting function

Technical Field

The utility model relates to an end mill, in particular to a ball end mill with a length adjusting function, and belongs to the technical field of milling cutters.

Background

The ball end mill is also called an R-cutter, and the cutting edge of the R-cutter is similar to a ball and is assembled on a milling machine for milling various curved surfaces and arc grooves.

For the existing ball end mill, for example, patent number CN210080818U discloses a ball end mill, which can directly replace a blade when the blade is damaged through a set mounting surface and the blade detachably arranged on the mounting surface, so that the use cost of the ball end mill is greatly reduced.

Disclosure of Invention

The present utility model has been made to solve at least one of the above-mentioned problems, and an object of the present utility model is to provide a ball nose end mill having a length adjustment function.

The utility model realizes the above purpose through the following technical scheme: a ball end mill with length adjustment function includes

The tool bit body is used for milling a workpiece, is arranged at the lower side of the end mill, and comprises a centering fixedly connected to the bottom surface of the tool bit body, and the surface of the tool bit body is fixedly connected with a first threaded column;

the cutter bar assembly is used for connecting the cutter head body, is arranged above the cutter head body, and comprises a connecting rod sleeved on the surface of the first threaded column, a second threaded column fixedly connected to the surface of the connecting rod and a threaded groove formed in the bottom surface of the connecting rod, the first threaded column is inserted in the threaded groove, and the first threaded column is in threaded connection with the connecting rod;

the bottom surface fixedly connected with screw thread section of thick bamboo of connector, screw thread section of thick bamboo and screw thread post two threaded connection.

As still further aspects of the utility model: the surface of the tool bit body is provided with a spiral chip removal groove.

As still further aspects of the utility model: the surface of the tool bit body is provided with a plurality of heat dissipation holes.

As still further aspects of the utility model: the surface of the movable rod is provided with scale marks.

As still further aspects of the utility model: the bottom surface symmetry of connecting rod has seted up the removal groove, all is provided with the spring in every removal groove, spring and connecting rod fixed connection, the bottom fixedly connected with sliding plate of spring, sliding plate and connecting rod sliding connection, the bottom surface fixedly connected with shaft of sliding plate, the shaft bottom surface rotates and is connected with the gyro wheel, the surface of tool bit body has seted up with gyro wheel matched with ring channel one.

As still further aspects of the utility model: the surface of the connecting rod is also provided with a second annular groove which is the same as the first annular groove.

As still further aspects of the utility model: the screwing direction between the thread cylinder and the thread column II and the screwing direction between the thread column I and the thread groove are opposite to the rotation direction of the machine tool.

As still further aspects of the utility model: sliding grooves are symmetrically formed in two sides of the moving groove, sliding blocks are symmetrically and fixedly connected to two sides of the sliding plate, and the sliding blocks are in sliding connection with the moving groove.

The beneficial effects of the utility model are as follows:

according to the cutter bar assembly, in the actual use process, different numbers of connecting rods can be connected according to actual milling requirements, so that the milling depth of the milling cutter can be adjusted, further, the deeper position of a workpiece can be milled, in addition, when the milling cutter is connected, the idler wheel can rotate in the annular groove I, the sliding plate presses the idler wheel downwards along with the screw thread groove I screwed into the screw thread groove, and repulsive force exists between the connecting rods and the cutter head body, so that the firmness of connection between the connecting rods and the cutter head body can be improved.

Drawings

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

FIG. 2 is a schematic view of a connecting cross-section structure of the present utility model;

fig. 3 is a schematic diagram of a disassembling structure of a connecting rod and a cutter head body in the present utility model.

In the figure: 1. the tool bit comprises a tool bit body, 12, chip grooves, 13, heat dissipation holes, 14, a first threaded column, 15, a first annular groove, 2, centering, 3, a tool bar assembly, 31, a connecting rod, 32, a second annular groove, 33, a second threaded column, 34, a threaded groove, 35, a moving groove, 36, a sliding groove, 37, a sliding block, 38, a sliding plate, 39, a spring, 310, a wheel shaft, 311, a roller, 4, a connector, 41 and a threaded cylinder.

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.

Example 1

As shown in fig. 1 to 3, a ball nose end mill with a length adjustment function includes

The tool bit body 1 is used for milling a workpiece, is arranged at the lower side of the end mill, comprises a centering 2 fixedly connected to the bottom surface of the tool bit body 1, and is fixedly connected with a first threaded column 14 on the surface of the tool bit body 1;

the cutter bar assembly 3 is used for connecting the cutter head body 1, is arranged above the cutter head body 1, and comprises a connecting rod 31 sleeved on the surface of a first threaded column 14, a second threaded column 33 fixedly connected to the surface of the connecting rod 31, and a threaded groove 34 formed in the bottom surface of the connecting rod 31, wherein the first threaded column 14 is inserted into the threaded groove 34, and the first threaded column 14 is in threaded connection with the connecting rod 31;

the connector 4, the bottom surface fixedly connected with screw thread section of thick bamboo 41 of connector 4, screw thread section of thick bamboo 41 and screw thread post two 33 threaded connection.

Example two

As shown in fig. 1 to 3, this embodiment includes, in addition to all the technical features of the first embodiment, the following steps:

the chip groove 12 which is spiral is formed in the surface of the tool bit body 1, so that scraps generated by milling can be cleaned in time, and the phenomenon that the milling precision of a workpiece is affected by accumulation of the scraps on the surface of the workpiece is avoided.

The surface of tool bit body 1 has seted up a plurality of louvres 13, can carry out timely cooling to the temperature that tool bit body 1 produced when milling, avoids high temperature to damage tool bit body 1.

Example III

the bottom surface symmetry of connecting rod 31 has seted up removal groove 35, all be provided with spring 39 in every removal groove 35, spring 39 and connecting rod 31 fixed connection, the bottom fixedly connected with sliding plate 38 of spring 39, sliding plate 38 and connecting rod 31 sliding connection, the bottom surface fixedly connected with shaft 310 of sliding plate 38, the shaft 310 bottom surface rotates and is connected with gyro wheel 311, roller 311 matched with ring channel one 15 is seted up on the surface of tool bit body 1, when being connected, roller 311 can rotate in ring channel one 15, along with screw post one 14 screw in screw groove 34 for sliding plate 38 extrudees spring 39, spring 39 downward pushes down roller 311 this moment, make there is repulsion between connecting rod 31 and the tool bit body 1, thereby can improve the fastness of being connected between connecting rod 31 and the tool bit body 1.

The surface of the connecting rod 31 is also provided with the annular groove two 32 which is the same as the annular groove one 15, and in the actual use process, the milling depth of the milling cutter can be adjusted by connecting different numbers of connecting rods 31 according to the actual milling requirements.

Example IV

the screwing direction between the screw cylinder 41 and the screw post two 33 and the screw post one 14 and the screw groove 34 is opposite to the rotation direction of the machine tool.

The sliding grooves 36 are symmetrically formed in two sides of the moving groove 35, the sliding blocks 37 are symmetrically and fixedly connected to two sides of the sliding plate 38, and the sliding blocks 37 are in sliding connection with the moving groove 35, so that the moving track of the sliding plate 38 can be limited.

Working principle: when the tool is used, firstly, the tool is assembled, firstly, the number of required connecting rods 31 is determined according to milling depth during assembly, then adjacent connecting rods 31 are connected, after the connecting rods 31 are assembled, the connecting rods 31 are connected with the tool bit body 1, when the tool is connected, the roller 311 can rotate in the annular groove I15, the sliding plate 38 presses the spring 39 along with the screw thread groove I14 screwed into the screw thread groove 34, the spring 39 downwards presses the roller 311, repulsive force exists between the connecting rods 31 and the tool bit body 1, so that the connection firmness between the connecting rods 31 and the tool bit body 1 can be improved, then the connector 4 is connected with the screw thread post II 33 at the uppermost end of the connecting rods 31 through the screw thread barrel 41, the tool is assembled with a machine tool through the connector 4, a workpiece can be machined, during use, waste chips generated during milling can be cleaned timely through the chip groove 12, the phenomenon that the waste chips are accumulated on the surface of the workpiece influences on the milling precision of the workpiece can be avoided, meanwhile, the high-temperature damage to the tool bit body 1 during milling can be avoided through the heat dissipation hole 13.

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. Any reference sign in a claim should not be construed as limiting the claim concerned.

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

1. A ball nose end mill with length adjustment, comprising

The tool bit body (1) is used for milling a workpiece, is arranged at the lower side of the end mill, and comprises a centering (2) fixedly connected to the bottom surface of the tool bit body (1), and a first threaded column (14) is fixedly connected to the surface of the tool bit body (1);

the cutter bar assembly (3) is used for connecting the cutter head body (1), is arranged above the cutter head body (1), and comprises a connecting rod (31) sleeved on the surface of the first threaded column (14), a second threaded column (33) fixedly connected to the surface of the connecting rod (31) and a threaded groove (34) formed in the bottom surface of the connecting rod (31), the first threaded column (14) is inserted into the threaded groove (34), and the first threaded column (14) is in threaded connection with the connecting rod (31);

the connector (4), the bottom surface fixedly connected with screw thread section of thick bamboo (41) of connector (4), screw thread section of thick bamboo (41) with screw thread post two (33) threaded connection.

2. A ball nose end mill having a length adjustment function according to claim 1, wherein: the surface of the tool bit body (1) is provided with a spiral chip removal groove (12).

3. A ball nose end mill having a length adjustment function according to claim 1, wherein: the surface of the tool bit body (1) is provided with a plurality of heat dissipation holes (13).

4. A ball nose end mill having a length adjustment function according to claim 1, wherein: the utility model discloses a cutter head, including connecting rod (31), movable groove (35) have been seted up to the bottom surface symmetry of connecting rod (31), every all be provided with spring (39) in movable groove (35), spring (39) with connecting rod (31) fixed connection, the bottom fixedly connected with sliding plate (38) of spring (39), sliding plate (38) with connecting rod (31) sliding connection, the bottom surface fixedly connected with shaft (310) of sliding plate (38), shaft (310) bottom surface rotation is connected with gyro wheel (311), the surface of cutter head body (1) seted up with gyro wheel (311) matched with ring channel one (15).

5. A ball nose end mill having a length adjustment function according to claim 4, wherein: the surface of the connecting rod (31) is also provided with a second annular groove (32) which is the same as the first annular groove (15).

6. A ball nose end mill having a length adjustment function according to claim 1, wherein: the screwing direction between the screw cylinder (41) and the screw column II (33) and between the screw column I (14) and the screw groove (34) is opposite to the rotation direction of the machine tool.

7. A ball nose end mill having a length adjustment function according to claim 4, wherein: sliding grooves (36) are symmetrically formed in two sides of the moving groove (35), sliding blocks (37) are symmetrically and fixedly connected to two sides of the sliding plate (38), and the sliding blocks (37) are in sliding connection with the moving groove (35).