A CNC machine tool auxiliary positioning device

Abstract

This utility model relates to the field of Swiss-type machining centers and discloses an auxiliary positioning device for CNC Swiss-type machining centers. The device includes a base, a tool holder on the inner wall of the base, a positioning mechanism on the inner side wall of the base, and a collecting mechanism at the bottom end of the inner wall of the base. The positioning mechanism includes a fixed seat, a groove on the outer wall of the fixed seat, a fixed block slidably connected to the inner wall of the groove, a turntable fixedly connected to the bottom end of the outer wall of the fixed block, three sets of guide rods slidably connected to the inner wall of the turntable, clamping blocks fixedly connected to the surfaces of the guide rods, and an insert block elastically connected to the inner wall of the fixed block via a limiting spring. In this utility model, by setting a positioning structure, the workpiece can be clamped and fixed by the mutual approach of the three sets of clamping blocks during machining, thereby preventing the workpiece from shaking during machining and causing inaccurate machining precision.

Description

Technical Field

[0001] This utility model relates to the field of CNC machining centers, and in particular to an auxiliary positioning device for CNC machining centers. Background Technology

[0002] A CN (Cellular Numerical Control) core-sliding machine is a device controlled by computer numerical control (CNC) technology, used in processes such as mold making and injection molding to move or position the core of a mold. This machine is typically used to manufacture parts or products with complex hollow structures or special shapes.

[0003] A search revealed Chinese Patent Publication No. CN 216298647 U, which discloses an auxiliary positioning device for a CNC sliding head machine. This device relates to the field of auxiliary devices for CNC sliding head machines and includes a positioning device and a workpiece body. One end of the positioning device is fixed with a positioning mechanism, which includes a fixed disk. The inner side of the fixed disk has a rotating ring connected to an external power source, and one end of the rotating ring is connected to a rotating block. The inner wall of the rotating block is fitted with a rotating rod connected to the fixed disk. The positioning device contains a power gear connected to an external power source, and one side of the power gear has a first moving plate. This invention enhances the positioning effect by incorporating a positioning mechanism, a first moving plate, and an electromagnet, effectively solving the problem of positioning deviation in positioning devices. Furthermore, by incorporating a power gear, a second moving plate, and rollers, it reduces wear and power loss caused by workpiece movement, effectively solving the technical problem of inconvenient workpiece movement.

[0004] The above-mentioned equipment positions bar workpieces by extrusion, which has poor stability. If the bar workpiece is processed by the cutting head after positioning, it may slip and become loose. If not dealt with in time, it will affect the processing quality. Therefore, an auxiliary positioning device for CNC sliding head machine is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides an auxiliary positioning device for CNC core-sliding machines, which aims to improve the problem of poor stability of the fixing method in the existing technology of positioning by extrusion.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an auxiliary positioning device for a CNC machining center, comprising a base, a tool holder provided on the inner wall of the base, a positioning mechanism provided on the inner side wall of the base, a collecting mechanism provided at the bottom end of the inner wall of the base, the positioning mechanism comprising a fixed seat, a groove provided on the outer wall of the fixed seat, a fixed block slidably connected to the inner wall of the groove of the fixed seat, a turntable fixedly connected to the bottom end of the outer wall of the fixed block, three sets of guide rods slidably connected to the inner wall of the turntable, clamping blocks fixedly connected to the surface of the guide rods, and an insert block elastically connected to the inner wall of the fixed block by a limiting spring.

[0007] As a further description of the above technical solution:

[0008] The collection mechanism includes a fixed box, a collection box slidably connected to the inner wall of the fixed box, a filter hole opened on the inner wall of the right side of the collection box, an external interface fixedly connected to the outer wall of the base, a wedge block elastically connected to the inner wall of the fixed box through a return spring, and a moving rod fixedly connected to the top of the outer wall of the wedge block.

[0009] As a further description of the above technical solution:

[0010] The fixing seat is disposed on the inner side wall of the base, and the insert block passes through and is slidably connected to the inner wall of the fixing block.

[0011] As a further description of the above technical solution:

[0012] One end of the limiting spring is fixedly connected to the surface of the insert block, and the other end of the limiting spring is fixedly connected to the inner wall of the fixing block.

[0013] As a further description of the above technical solution:

[0014] The surface of the fixing base has multiple sets of through holes, and the bottom end of the outer wall of the insert block is inserted into the inner wall of the through hole.

[0015] As a further description of the above technical solution:

[0016] The surface of the fixed base is provided with three sets of linear guide grooves, and the guide rod is slidably connected to the inner wall of the linear guide grooves of the fixed base.

[0017] As a further description of the above technical solution:

[0018] The fixed box is fixedly connected to the bottom end of the inner wall of the base, one end of the reset spring is fixedly connected to the top end of the outer wall of the wedge, the other end of the reset spring is fixedly connected to the top end of the inner wall of the fixed box, and the wedge is slidably connected to the inner wall of the fixed box.

[0019] As a further description of the above technical solution:

[0020] The movable rod passes through and is slidably connected to the inner wall of the fixed box, and the inner side wall of the wedge is in contact with the outer left side wall of the collection box.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, by setting a positioning structure, the workpiece can be clamped and fixed by the mutual approach of three sets of clamping blocks during the processing, thereby avoiding the workpiece from shaking during the processing and causing inaccurate processing precision.

[0023] 2. In this utility model, by setting up a collection mechanism, the debris generated during the processing of the workpiece is attracted by the suction force of the dust collection device connected to the external interface and adsorbed inside the collection box, thereby preventing the debris from splashing. At the same time, the detachable collection box allows for centralized processing of the debris. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall three-dimensional structure of an auxiliary positioning device for a CNC machine tool proposed in this utility model;

[0025] Figure 2 This is a three-dimensional structural diagram of the positioning mechanism of the auxiliary positioning device for a CNC machine tool proposed in this utility model;

[0026] Figure 3 This is a partial cross-sectional view of the fixing seat of the auxiliary positioning device for a CNC machine tool proposed in this utility model;

[0027] Figure 4 This is a partial cross-sectional view of the base structure of an auxiliary positioning device for a CNC machine tool proposed in this utility model;

[0028] Figure 5 This utility model proposes an auxiliary positioning device for CNC machine tools. Figure 4 Enlarged structural diagram of section A.

[0029] Legend:

[0030] 1. Base; 2. Tool holder; 3. Collection mechanism; 31. Fixing box; 32. External interface; 33. Collection box; 34. Filter hole; 35. Return spring; 36. Wedge block; 37. Moving rod; 4. Positioning mechanism; 41. Fixing seat; 42. Fixing block; 43. Limiting spring; 44. Insertion block; 45. Turntable; 46. Guide rod; 47. Clamping block. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Reference Figures 1-3 The present invention provides an embodiment of an auxiliary positioning device for a CNC machining center, comprising a base 1, a tool holder 2 disposed on the inner wall of the base 1 (which is prior art), the tool holder 2 having multiple sets of tool heads disposed on its surface, a positioning mechanism 4 disposed on the inner side wall of the base 1, and a collecting mechanism 3 disposed at the bottom end of the inner wall of the base 1.

[0033] Reference Figures 2-3 The positioning mechanism 4 includes a fixed base 41. Both the fixed base 41 and the inner wall of the turntable 45 have cavities to facilitate the placement of workpieces. The fixed base 41 is located on the inner side wall of the base 1. An electrical control device is connected to the outside of the fixed base 41, allowing it to move the workpiece on its surface back and forth to cut the shape of the workpiece. This is existing technology. An insert block 44 penetrates and slides through the inner wall of the fixed block 42. The inner wall of the fixed block 42 has a groove that fits the circular block on the surface of the insert block 44, allowing the insert block 44 to... The four parts can slide back and forth on the inner wall of the fixed block 42, but cannot detach from the inner wall. The outer wall of the fixed seat 41 is provided with a sliding groove, and the fixed block 42 is slidably connected to the inner wall of the sliding groove of the fixed seat 41. By providing a sliding groove on the outer wall of the fixed seat 41, the fixed block 42 can move on the inner wall of the sliding groove to clamp and fix the workpiece. The bottom end of the outer wall of the fixed block 42 is fixedly connected to a turntable 45. When the fixed block 42 slides on the outer wall of the fixed seat 41, it can drive the turntable 45 to rotate synchronously.

[0034] Reference Figures 2-3Three sets of guide rods 46 are slidably connected to the inner wall of the turntable 45. Three sets of linear guide grooves are formed on the surface of the fixed base 41. The guide rods 46 are slidably connected to the inner wall of the linear guide grooves of the fixed base 41. By rotating the turntable 45, the three sets of guide rods 46 move towards each other on the inner wall of the inclined grooves. Simultaneously, the guide rods 46 also move on the inner wall of the linear guide grooves of the fixed base 41, allowing the three sets of guide rods 46 to move linearly. Clamping blocks 47 are fixedly connected to the surface of the guide rods 46. The relative movement of the three sets of clamping blocks 47 clamps the outer wall of the workpiece. The clamping and fixing block 42 has an insert block 44 elastically connected to its inner wall via a limiting spring 43. The surface of the fixing base 41 has multiple sets of through holes. The bottom end of the outer wall of the insert block 44 is inserted into the inner wall of the through hole. The insertion between the two fixes the turntable 45 to multiple positions after moving the four sets of guide rods 46. One end of the limiting spring 43 is fixedly connected to the surface of the insert block 44, and the other end of the limiting spring 43 is fixedly connected to the inner wall of the fixing block 42. The function of the limiting spring 43 is to automatically reset the position of the insert block 44 after it is pulled outward.

[0035] Reference Figure 1 and Figures 4-5 The collection mechanism 3 includes a fixed box 31, which is fixedly connected to the bottom of the inner wall of the base 1. One end of the return spring 35 is fixedly connected to the top of the outer wall of the wedge 36, and the other end of the return spring 35 is fixedly connected to the top of the inner wall of the fixed box 31. The function of the return spring 35 is to automatically reset the position of the wedge 36 after it is squeezed and moved by the inclined surface of the wedge 36. The wedge 36 is slidably connected to the inner wall of the fixed box 31. The inner wall of the fixed box 31 has a cavity that fits the wedge 36, so that the wedge 36 can move in the inner wall of the cavity. The inner wall of the fixed box 31 is slidably connected to a collection box 33. By setting the collection box 33, the debris generated by the surface processing of the workpiece can be centrally processed.

[0036] Figures 4-5 The inner wall of the right side of the collection box 33 is provided with a filter hole 34. The filter hole 34 can block the cavity where the external interface 32 connects to the inner wall of the fixed box 31, thereby preventing debris from being sucked in by the vacuum cleaner at the external interface 32. The outer wall of the base 1 is fixedly connected to the external interface 32, and a vacuum cleaner can be connected to the external interface 32 to generate suction and thus adsorb the debris during workpiece processing. The inner wall of the fixed box 31 is elastically connected to a wedge 36 through a return spring 35. The top of the outer wall of the wedge 36 is fixedly connected to a moving rod 37, which passes through and slides on the inner wall of the fixed box 31. The inner side wall of the wedge 36 is in contact with the outer wall of the left side of the collection box 33. The contact between the two fixes the collection box 33 in the position of the inner wall of the fixed box 31.

[0037] Working principle: When processing a workpiece, the dust collection device can be connected and fixed to the external interface 32, thereby generating suction inside the base 1. The dust generated during workpiece processing is sucked into the collection box 33 by the dust collection device. The cutting oil from the cutting process flows into the fixed box 31 through the through hole on the surface of the collection box 33, and then flows back into the base 1 from the bottom of the fixed box 31. When dumping the cutting debris on the surface of the collection box 33, the wedge 36 can be pulled upward by grasping the moving rod 37 to move it on the inner wall of the fixed box 31, and the return spring 35 is elastically compressed. At this time, the debris can be removed from the inner wall of the fixed box 31 by the handle on the surface of the collection box 33, so as to facilitate its centralized processing.

[0038] Meanwhile, when installing the workpiece, the workpiece is inserted into the inner wall of the cavity of the fixed base 41. At this time, the insert block 44 can be pulled outward on the inner wall of the fixed block 42, and the limiting spring 43 is elastically compressed. At this time, the fixed block 42 can be rotated to drive the turntable 45 to rotate, so that the three sets of guide rods 46 will move towards each other in the inclined groove on the surface of the turntable 45. At the same time, since the top of the guide rod 46 moves in the linear guide groove of the fixed base 41, the guide rod 46 will drive the clamping block 47 to move linearly, thereby contacting the surface of the workpiece and clamping and fixing the workpiece. At this time, the insert block 44 can be released and it will be reset by the elastic action of the limiting spring 43, so that the insert block 44 can be inserted into the through hole of the fixed base 41 at the current position, thereby fixing the position of the turntable 45 in clamping the workpiece.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A CNC machine tool auxiliary positioning device, comprising a base (1), characterized in that: The inner wall of the base (1) is provided with a knife holder (2), the inner side wall of the base (1) is provided with a positioning mechanism (4), the bottom end of the inner wall of the base (1) is provided with a collection mechanism (3), and the positioning mechanism (4) includes a fixed seat (41). The outer wall of the fixed seat (41) is provided with a sliding groove. The inner wall of the sliding groove of the fixed seat (41) is slidably connected to a fixed block (42). The bottom end of the outer wall of the fixed block (42) is fixedly connected to a turntable (45). The inner wall of the turntable (45) is slidably connected to three sets of guide rods (46). The surface of the guide rods (46) is fixedly connected to a clamping block (47). The inner wall of the fixed block (42) is elastically connected to an insert block (44) through a limiting spring (43).

2. The auxiliary positioning device for a CNC machining center according to claim 1, characterized in that: The collection mechanism (3) includes a fixed box (31), a collection box (33) is slidably connected to the inner wall of the fixed box (31), a filter hole (34) is opened on the inner wall of the right side of the collection box (33), an external interface (32) is fixedly connected to the outer wall of the base (1), a wedge (36) is elastically connected to the inner wall of the fixed box (31) through a return spring (35), and a moving rod (37) is fixedly connected to the top of the outer wall of the wedge (36).

3. The auxiliary positioning device for a CNC machine tool according to claim 1, characterized in that: The fixing seat (41) is disposed on the inner side wall of the base (1), and the insert (44) is slidably connected to the inner wall of the fixing block (42).

4. The auxiliary positioning device for a CNC machining center according to claim 1, characterized in that: One end of the limiting spring (43) is fixedly connected to the surface of the insert block (44), and the other end of the limiting spring (43) is fixedly connected to the inner wall of the fixing block (42).

5. The auxiliary positioning device for a CNC machining center according to claim 1, characterized in that: The surface of the fixing base (41) has multiple sets of through holes, and the bottom end of the outer wall of the insert (44) is inserted into the inner wall of the through hole.

6. The auxiliary positioning device for a CNC machining center according to claim 1, characterized in that: The surface of the fixed base (41) is provided with three sets of linear guide grooves, and the guide rod (46) is slidably connected to the inner wall of the linear guide groove of the fixed base (41).

7. The auxiliary positioning device for a CNC machining center according to claim 2, characterized in that: The fixed box (31) is fixedly connected to the bottom end of the inner wall of the base (1), one end of the reset spring (35) is fixedly connected to the top end of the outer wall of the wedge (36), the other end of the reset spring (35) is fixedly connected to the top end of the inner wall of the fixed box (31), and the wedge (36) is slidably connected to the inner wall of the fixed box (31).

8. The auxiliary positioning device for a CNC machine tool according to claim 2, characterized in that: The movable rod (37) passes through and is slidably connected to the inner wall of the fixed box (31), and the inner side wall of the wedge (36) is in contact with the outer left side wall of the collection box (33).

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