CN219945391U

CN219945391U - Cutter disc interchangeability processing device

Info

Publication number: CN219945391U
Application number: CN202321329651.6U
Authority: CN
Inventors: 杜玉刚; 路亚光
Original assignee: Changzhou Xinshu Machine Tool Numerical Control Equipment Co ltd
Current assignee: Changzhou Xinshu Machine Tool Numerical Control Equipment Co ltd
Priority date: 2023-05-29
Filing date: 2023-05-29
Publication date: 2023-11-03
Anticipated expiration: 2033-05-29

Abstract

The utility model relates to the technical field of cutter disc machining, in particular to a cutter disc interchangeability machining device, wherein a part to be machined of a cutter disc at least comprises a first machining part positioned on an end face and a second machining part positioned on a side face, the machining device comprises a numerical control rotary table, the numerical control rotary table is connected with a two-shaft rotating mechanism, the first rotating shaft center of the two-shaft rotating mechanism is overlapped with the central line of the cutter disc, the second rotating shaft center of the numerical control rotary table is perpendicular to the first rotating shaft center, and a tool assembly for clamping and positioning the cutter disc is arranged on the numerical control rotary table.

Description

Cutter disc interchangeability processing device

Technical Field

The utility model relates to the technical field of cutter head machining, in particular to a cutter head interchangeability machining device.

Background

The numerical control tool rest is a functional component of numerical control equipment, and the cutterhead is an important key piece of the numerical control tool rest. A plurality of cutters are arranged on the numerical control cutter rest, and the parts are processed by different cutters through the rotation of the numerical control cutter rest. The cutter is arranged on the cutter head through the cutter seat, the precision of the numerical control cutter head directly influences the machining precision of the part, and the precision of the cutter head determines the precision of the numerical control cutter head. Because the key parts of the cutterhead are difficult to be machined through one-time clamping, the precision of the cutterhead is difficult to be ensured. In the prior state, the tool rest is assembled, and then the assembled tool rest is integrally placed on a machine tool, and key parts of a semi-finished tool head (semi-finished product) such as 12-edge appearance, positioning grooves thereof, tool mounting holes and the like are subjected to finish machining so as to improve the integral accuracy of the tool rest. However, the processing method increases the process flow, affects the production efficiency, and brings difficulty to the subsequent maintenance.

Disclosure of Invention

In order to solve the problems of the prior art that the cutter head machining increases the process flow and the production efficiency is low, the utility model provides a cutter head interchangeability machining device for improving the production efficiency.

The technical scheme adopted for solving the technical problems is as follows:

the machining device comprises a numerical control rotary table, wherein the numerical control rotary table is connected with a two-shaft rotating mechanism, the first rotating shaft center of the two-shaft rotating mechanism is overlapped with the central line of the cutterhead, the second rotating shaft center of the numerical control rotary table is perpendicular to the first rotating shaft center, and a tool assembly for clamping and positioning the cutterhead is arranged on the numerical control rotary table.

Further, the first processing part comprises a reference hole bottom surface and a reference hole, and the second processing part comprises a plurality of side units, positioning grooves positioned on the side units and a cutter hole.

Further, the tool assembly comprises a tool main body, the tool main body is fixed with the numerical control rotary table, a supporting portion for bearing the end face of the cutter head, a hydraulic clamping mechanism and a core expansion positioning shaft matched with a central hole of the cutter head are arranged on the tool main body, a first positioning hole communicated with the tool hole is formed in the inner side of the tool hole, and the hydraulic clamping mechanism is pressed on the hole wall of the first positioning hole and used for pressing the cutter head on the supporting portion. The center hole and the core expansion positioning shaft are positioned in a gapless way, the core expansion positioning shaft realizes the center positioning of the cutter head on the tool, and the positioning gap is eliminated through the core expansion.

Further, the supporting part and the hydraulic clamping mechanism are uniformly distributed along the circumference of the cutterhead. And the hydraulic clamping mechanisms are six sets, and the workpiece is clamped by hydraulic driving.

Further, the supporting part comprises a plurality of supporting plates fixed on the tool main body, and supporting surfaces are arranged on the supporting plates. Six supporting plates are arranged in total, the supporting plates and the tool main body can be fixed by bolts, the cutterhead is supported on the same plane, and the flatness tolerance of the six supporting surfaces is 0.003mm.

Further, the hydraulic clamping mechanism comprises a lever cylinder, and a lever pressing arm of the lever cylinder is pressed on the hole wall of the first positioning hole.

Further, the mounting flange of the expanding core positioning shaft is provided with an avoidance groove, the avoidance groove is provided with a transition block, the transition block is provided with a pin, the cutter head is provided with a second positioning hole, and the pin is inserted into the second positioning hole.

Further, the pins are diamond pins. The diamond pin controls the appearance position of the cutterhead.

Further, the tool main body is fixedly or integrally connected with a heightening block, and the rising core positioning shaft is arranged on the heightening block.

Further, the lever cylinder is arranged between the heightening block and the supporting part, and when the lever pressing arm of the lever cylinder presses the hole wall of the first positioning hole, the lever pressing arm of the lever cylinder is positioned right above the supporting part.

The beneficial effects are that: the cutter disc interchangeability processing device changes the secondary positioning and decentralized processing of the original workpiece into the primary positioning and clamping of the part, completes the whole processing of the key part, eliminates the errors of the secondary positioning and clamping, has reliable quality and good precision, meets the cutter disc interchangeability assembly requirement, provides guarantee for the assembly of a product assembly line, is convenient for product maintenance, and achieves better technical and economic effects.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a first perspective view of a cutterhead;

fig. 2 is a second perspective view of the cutterhead;

FIG. 3 is a schematic view of a processing apparatus;

fig. 4 is a schematic diagram of the assembly of the cutterhead with the machining device.

The tool comprises 1, a cutter head, 1-1, a first processing part, 1-11, a base hole bottom surface, 1-12, a base hole, 1-2, a second processing part, 1-21, a side unit, 1-22, a positioning groove, 1-23, a cutter hole, 1-3, a first positioning hole, 1-4, a second positioning hole, 1-5, an end surface, 1-6, an outer hole bottom surface 2, a numerical control turntable, 3, a tool main body, 3-1, an heightening block, 4, a supporting part, 4-1, a supporting surface, 5, an expanding core positioning shaft, 6, a lever cylinder, 6-1, a lever pressing arm, 7, a transition block, 8 and a diamond pin.

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. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses. 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 is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present utility model. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

In the description of the present utility model, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present utility model; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present utility model.

The machining device comprises a numerical control rotary table 2, wherein the numerical control rotary table 2 is connected with a two-axis rotating mechanism, a first rotating axis of the two-axis rotating mechanism is overlapped with a central line of the cutter head 1, a second rotating axis of the numerical control rotary table 2 is perpendicular to the first rotating axis, and a tool assembly for clamping and positioning the cutter head 1 is arranged on the numerical control rotary table 2.

The first processing part 1-1 comprises a reference hole bottom surface 1-11 and a reference hole 1-12, and the second processing part 1-2 comprises a plurality of side units 1-21, positioning grooves 1-22 positioned on the plurality of side units 1-21 and cutter holes 1-23.

As shown in fig. 3, the tool assembly comprises a tool main body 3, the tool main body 3 is fixed with a numerical control turntable 2, a supporting part 4 for bearing an end face 1-5 of a cutter head 1, a hydraulic clamping mechanism and a core expanding positioning shaft 5 matched with a central hole of the cutter head 1 are arranged on the tool main body 3, an heightening block 3-1 is fixedly or integrally connected on the tool main body 3, and the core expanding positioning shaft 5 is arranged on the heightening block 3-1.

The inner side of the cutter hole 1-23 is provided with a first positioning hole 1-3 communicated with the cutter hole, and a hydraulic clamping mechanism is pressed on the hole wall of the first positioning hole 1-3 and used for pressing the cutter head 1 on the supporting part 4.

The supporting part 4 and the hydraulic clamping mechanism are uniformly distributed along the circumference of the cutterhead 1. The bearing capacity and the pressing force of the cutter disc 1 are distributed uniformly, and the positioning is more stable.

The supporting part 4 comprises a plurality of supporting plates fixed on the tool main body 3, and the supporting plates are provided with supporting surfaces 4-1.

The hydraulic clamping mechanism comprises a lever cylinder 6, and a lever pressing arm 6-1 of the lever cylinder 6 presses the hole wall of the first positioning hole 1-3.

The mounting flange of the expansion core positioning shaft 5 is provided with an avoidance groove, the avoidance groove is provided with a transition block 7, the transition block 7 is provided with a pin, the cutter head 1 is provided with a second positioning hole 1-4, and the pin is inserted into the second positioning hole 1-4. The pins are diamond shaped pins 8.

The lever cylinder 6 is disposed between the height increasing block 3-1 and the supporting portion 4, and when the lever pressing arm 6-1 of the lever cylinder 6 presses against the wall of the first positioning hole 1-3, the lever pressing arm 6-1 of the lever cylinder 6 is located directly above the supporting portion 4.

The cutter head has higher precision requirement, taking a BMT cutter head as an example: as shown in FIGS. 1-2, the reference hole 1-12 has a dimension phi 170 (+0.025/0) mm, and the reference hole bottom surface 1-1 has a parallelism of 0.03mm with respect to the end surface 1-5. The parallelism of the bottom surface of the outer hole of phi 240.5 to the bottom surface 1-1 of the reference hole is 0.02mm; the reference holes 1-12 have the following dimensions: 170+/-0.006mm, the flatness of the 12 side units 1-21 is 0.01mm, and the perpendicularity of the 12 side units 1-21 relative to the reference holes 1-21 is 0.01mm; the parallelism of the centers of the 12 cutter holes 1-23 with the dimension phi 55 to the bottom surface 1-1 of the reference hole is 0.01mm; the distance between the center of the cutter hole 1-23 and the bottom surface 1-1 of the reference hole is 60+/-0.02 mm; the symmetry of the center of the slot in one direction of the 15mm wide cross slot on the 12 side units 1-21 to the reference hole 1-21 is 0.01mm; the perpendicularity to the center of the other groove is 0.01mm.

Through the structure and the precision analysis of the cutter disc, a hydraulic tool and a biaxial numerical control turntable are adopted to form an equipment system on a workbench of a vertical machining center, so that five-axis rotary machining is realized: the one-time clamping is ensured, all machining of key parts of the cutter disc is completed, and innovation and breakthrough of the cutter disc machining technology are realized.

The parts are accurately and reliably positioned and clamped on the numerical control turntable (as shown in fig. 4) through the tool assembly, which is a very important link. Firstly, mounting a biaxial numerical control turntable on a workbench of vertical machining center equipment; the tool assembly is arranged on a workbench of the numerical control turntable, and the calibration expansion core positioning shaft 5 is concentric with the numerical control turntable 2, so that the tolerance is 0.003mm. Finally, the tool assembly and the numerical control turntable 2 are connected into a whole; the workpiece and the tool are positioned by adopting the expansion core positioning shaft 5, so that the workpiece and the tool are coaxial, and the diamond pins 8 determine the direction of the workpiece, so that the workpiece is of a typical one-side two-pin positioning structure; the workpiece is pressed by arranging lever pressing arms 6-1 in six second positioning holes 1-4 of the part.

The specific processing process comprises the following steps:

1. preparation of parts (semi-finished products)

(1) All non-key parts of the part are processed into finished products, such as end surfaces, holes, screw holes and the like;

(2) The key parts are reserved with 0.5mm (unilateral) finish machining allowance, such as a side unit 1-21, a reference hole bottom surface 1-1, a positioning groove 1-22, a cutter hole 1-23 and the like.

(3) Improving the precision of the part mounting hole: if the center hole of the cutter disc is increased from phi 85.5 (+0.14/0) mm to phi 85.5 (+0.05/0) mm, the accurate positioning of the cutter disc on the tooling rising core positioning shaft is ensured.

(4) And the parallelism precision of two end faces is improved: the front end face and the rear end face of the cutter head are subjected to grinding processing to reach the parallelism of 0.02mm so as to ensure the parallelism requirement of the end faces 1-5 to the bottom face of the reference hole of 0.03mm.

2. Changing dispersion processing into centralized processing

The original secondary positioning and dispersion processing of the workpiece is changed into primary positioning and clamping of the part, so that all processing of key parts is completed, and errors of secondary positioning and clamping are eliminated:

(1) Placing the semi-finished cutterhead on a tooling, and positioning through one surface and two pins;

(2) Checking the gap between the end face 1-5 of the cutterhead and the supporting surface 4-4 by using a feeler gauge, wherein a feeler gauge of 0.02mm is required to be inserted;

(3) The tool assembly is characterized in that a lever pressing arm 6-1 of the tool assembly presses the cutter disc 1 on the supporting surface 4;

(4) Checking the jump of the upper plane of the cutter disc 1 by striking a table, wherein the jump is required to be within 0.02mm;

(5) A machining reference hole 1-12 and a reference hole bottom surface 1-21 (horizontal position) of the machining cutter head 1;

(6) The numerical control turntable 2 rotates 90 degrees (vertical position);

(7) The machining side surface units 1-21 and the corresponding positioning grooves 1-22, wherein each machining side surface is turned by 30 degrees until machining is finished;

(8) The numerical control turntable 2 is reversed for 90-degree reset (horizontal position);

(9) And releasing the lever pressing arm 6-1 to detach the workpiece.

The present utility model is not limited to the above-mentioned embodiments, and any person skilled in the art, based on the technical solution of the present utility model and the inventive concept thereof, can be replaced or changed within the scope of the present utility model.

Claims

1. A cutter disc interchangeability processing device is characterized in that a part to be processed of a cutter disc (1) at least comprises a first processing part (1-1) positioned on an end face and a second processing part (1-2) positioned on a side face, the processing device comprises a numerical control rotary table (2), the numerical control rotary table (2) is connected with a biaxial rotation mechanism, a first rotation axis of the biaxial rotation mechanism is overlapped with a central line of the cutter disc (1), a second rotation axis of the numerical control rotary table (2) is perpendicular to the first rotation axis, and a tool assembly for clamping and positioning the cutter disc (1) is arranged on the numerical control rotary table (2).

2. The cutterhead interchangeability processing apparatus of claim 1, wherein: the first processing part (1-1) comprises a reference hole bottom surface (1-11) and a reference hole (1-12), and the second processing part (1-2) comprises a plurality of side units (1-21), positioning grooves (1-22) positioned on the side units (1-21) and cutter holes (1-23).

3. A cutterhead interchangeability processing apparatus according to claim 2, wherein: the tool assembly comprises a tool main body (3), wherein the tool main body (3) is fixed with a numerical control rotary table (2), a supporting part (4) for bearing the end face (1-5) of the cutter head (1), a hydraulic clamping mechanism and a core expanding positioning shaft (5) matched with a central hole of the cutter head (1) are arranged on the tool main body (3), a first positioning hole (1-3) communicated with the inner side of a cutter hole (1-23) is formed in the inner side of the cutter hole, and the hydraulic clamping mechanism is pressed on the hole wall of the first positioning hole (1-3) and used for pressing the cutter head (1) on the supporting part (4).

4. A cutterhead interchangeability processing apparatus according to claim 3, wherein: the supporting part (4) and the hydraulic clamping mechanism are uniformly distributed along the circumferential direction of the cutterhead (1).

5. A cutterhead interchangeability processing apparatus according to claim 3, wherein: the supporting part (4) comprises a plurality of supporting plates fixed on the tool main body (3), and supporting surfaces (4-1) are arranged on the supporting plates.

6. A cutterhead interchangeability processing apparatus according to claim 3, wherein: the hydraulic clamping mechanism comprises a lever cylinder (6), and a lever pressing arm (6-1) of the lever cylinder (6) presses the hole wall of the first positioning hole (1-3).

7. A cutterhead interchangeability processing apparatus according to claim 3, wherein: the mounting flange of the expanding core positioning shaft (5) is provided with an avoidance groove, a transition block (7) is mounted in the avoidance groove, a pin is arranged on the transition block (7), the cutter head (1) is provided with a second positioning hole (1-4), and the pin is inserted into the second positioning hole (1-4).

8. The cutterhead interchangeability processing apparatus of claim 7, wherein: the pin is a diamond pin (8).

9. A cutterhead interchangeability processing apparatus according to claim 3, wherein: the fixture is characterized in that the fixture main body (3) is fixedly or integrally connected with a heightening block (3-1), and the rising core positioning shaft (5) is arranged on the heightening block (3-1).

10. The cutterhead interchangeability processing apparatus of claim 6, wherein: the lever cylinder (6) is arranged between the heightening block (3-1) and the supporting part (4), and when the lever pressing arm (6-1) of the lever cylinder (6) presses the hole wall of the first positioning hole (1-3), the lever pressing arm (6-1) of the lever cylinder (6) is positioned right above the supporting part (4).