CN201871953U - Lathe cutter following device with novel structure - Google Patents

Abstract

The utility model belongs to the technical field of machining, and relates to a tool following device of a machine tool with a novel structure, which is mainly composed of a support frame (10) and three support carriers, each of which has a stretching shaft and a support body (10). The supporting body (6) is connected to the connection block (3) at one end of the stretching shaft through the mandrel (4); wherein the two supporting carriers are respectively located at the top and side of the supporting frame (10), and the stretching shaft (2) passes through it. Go through the support frame (10) and connect with the handle (1); the tensile shaft (9) of the support carrier located on the lower plane of the support frame (10) is threaded with the lower plane of the support frame and fastened by a lock nut (8) ; The support frame (10) is fixed on the large pallet (11) of the machine tool and moves with the large pallet (11). The utility model realizes the tracking and supporting of the slender shaft parts in the whole process, ensures the processing accuracy of the slender shaft parts, improves the production efficiency and reduces the processing cost.

Description

A New Structured Machine Tool Follower Device

technical field

The utility model belongs to the technical field of mechanical processing and manufacturing, and mainly relates to a tool follower device of a machine tool with a new structure, which is used for cutting the outer circle of slender shaft parts.

Background technique

The machining of the outer circle of slender shaft parts is usually completed on ordinary horizontal lathes or CNC horizontal lathes. When the long axis is used, due to the severe vibration of the machine tool, the parts will be greatly deformed after processing, and the dimensional accuracy and surface roughness of the parts cannot meet the product design requirements.

Traditional slender shaft processing usually adopts the following two support methods:

One is to place a fixed center frame in the middle of the slender shaft. Due to the installation of the fixed center frame, the continuous cutting is hindered. The machining of the full length of the outer circle of the slender shaft parts is divided into two sections. The secondary positioning makes it difficult to guarantee the design accuracy requirements after the parts are machined;

The second is to use the tool holder for processing. The traditional tool holder supports the part at two points on the top and side of the slender shaft to realize continuous cutting of the part. The precision of the processed part is also improved compared with the traditional method. Letting the knife, the support part of the tool holder with only two points of support for the slender shaft is very easy to wear, and the tool damage is very serious after processing the journal of the slender shaft parts and the bottom of the groove in this way.

The support bodies of the above two processing methods are all fixed supports, and the material of the support body is copper or cast iron that is easy to wear. Replace regularly.

It can be seen that, using the above two methods to process slender shaft parts, it is difficult to guarantee the machining accuracy of the parts, and it will also generate relatively large processing costs.

Contents of the invention

The purpose of this utility model is to propose a machine tool tracking device with a new structure, which is used to improve the support stiffness of the slender shaft in the entire processing process, ensure the processing accuracy of the slender shaft, improve production efficiency, and reduce processing costs.

The utility model adopts the following technical schemes for completing the invention task: a machine tool follower device with a novel structure, mainly composed of a support frame and three support carriers; the three support carriers all have stretching shafts and support bodies, so One end of the tensile shaft of the supporting carrier is fixedly connected with a connecting block, the supporting body is connected to the connecting block through a mandrel and a rolling body is arranged between the supporting body and the mandrel; the three supporting carriers are respectively arranged on the supporting frame On the top, side, and lower plane of the support frame; the stretching shaft of the support carrier arranged at the top of the support frame and the side passes through the support frame and is threaded with the support frame, and the stretch shaft of the support carrier on the top of the support frame and the side is the other One end is connected to the handle; it forms a structure in which the stretching shaft drives the supporting body to move relative to the processed part under the action of the handle; The lower part of the processing part is supported and the structure can be adjusted in height, and a lock nut is provided to fasten the tensile shaft; the support body supporting the carrier on the top of the support frame and the lower plane is arranged symmetrically up and down and is a coaxial structure; The support frame is fixed on the large pallet of the machine tool and moves with the large pallet.

A new type of machine tool follower device proposed by the utility model has the following beneficial effects:

1. The tool follower device moves along the axial direction of the part together with the tool, and supports the processing part of the part from time to time, which reduces the vibration of the machine tool and improves the processing stability.

2. The support body and the parts form rolling friction, which reduces the wear of the parts on the support body;

3. The follower device runs through the entire processing process, and the processing is completed at one time, ensuring the processing accuracy;

4. The supporting body adopts a circular sleeve, which has high supporting strength and is easy to replace.

5. When cutting the journal and undercut of parts, it can reduce tool damage and improve processing efficiency.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a structural schematic diagram of the support carrier of the present invention.

In the figure: 1. handle, 2. stretching shaft, 3. connection block, 4. mandrel, 5. needle roller, 6. supporting body, 7. parts, 8. lock nut, 9. stretching shaft, 10 , support frame, 11, large pallet.

Detailed ways

The utility model is further described in conjunction with accompanying drawing and embodiment:

As shown in Figures 1 and 2, a machine tool follower device with a novel structure is mainly composed of a support frame 10 and three support carriers; the three support carriers all have stretching shafts and support bodies 6, and the support One end of the tensile shaft of the carrier is screwed into the connection block 3 and welded, the support body 6 is connected to the connection block 3 through the mandrel 4 and a needle roller 5 is arranged between the support body and the mandrel 4; the three support carriers are respectively Be arranged on the top, side, and lower plane of the support frame 10; the stretching shaft 2 of the support carrier that is arranged on the top of the support frame 10 and the side passes through the support frame 10 and is threadedly matched with the support frame 10, and the top and side surfaces of the support frame The stretching shaft 2 of the support carrier is threadedly connected with the handle 1, and the handle 1 is rotated, and the stretching shaft 2 drives the support body 6 to move relative to the processed part under the action of the handle 1, so that the outer circle of the support body 6 contacts the part line to form a rolling Friction; the tensile shaft 9 supporting the carrier on the lower plane of the support frame is threadedly connected with the lower plane of the support frame to adjust the height of the support body 6, and is provided with a lock nut 8 for fastening the tensile shaft; The support body 6 supporting the carrier on the top of the support frame and the lower plane is symmetrically arranged up and down and has a coaxial structure; the support frame 10 is fixed on the large pallet 11 of the machine tool and moves with the large pallet 11 .

Before processing the parts 7, the support frame 10 is installed on the large pallet 11 of the machine tool by two M16 screws, and the stretching axis 9 of the support carrier on the lower plane of the support frame 10 is adjusted so that the support body of the support carrier on the lower plane 6. After contacting the support with the part 7 and making the axis of the support body 6 parallel to the axis of the part 7, tighten the lock nut 8 so that the stretching shaft 9 cannot move up and down or rotate; rotate the handle 1 to adjust the upper end of the support frame 10 and the side support carrier. Stretch the shaft 2, make the support body 6 on the upper end and side of the support frame 10 contact and support the part 7 and make the axis of the support body 6 parallel to the axis of the part 7, then tighten the stretch shaft 2 so that the stretch shaft 2 cannot move Or rotate, and at the same time, the slender shaft parts are fixedly supported.

When the support body 6 on the three support carriers is in contact with the part 7, it is necessary to ensure that the axis of the support body 6 is parallel to the axis of the part 7. When designing, the contact lines between the support carrier on the upper end and the bottom surface and the part are respectively forward and rear. Deviate from the center line of the part by 1-2 mm to ensure the support rigidity in the processing process; since the support body 6 and the outer circle of the part are in line contact, rolling friction is formed between the support body 6 and the part; the rolling friction resistance is small, so the part is produced due to resistance The vibration is also small; the bottom surface of the support frame 10 is installed on the large pallet of the machine tool through screws. During the processing, the follower device and the tool move along the axis of the part, tracking and supporting the part processing part, so that the support body 6 and the part 7. The force direction is vertical, so that the service life of the support body 6 can be improved, and at the same time, the special requirements for surface processing of slender shaft parts can be met.

Claims (2)

1. the lathe of a new structure is characterized in that with knife system: mainly be made of bracing frame (10) and three prop carriers; Described three prop carriers all have tensile axis and supporter (10), tensile axis one end of described prop carrier all is fixedly connected with contiguous block (3), and supporter (6) is connected on the contiguous block (3) by axle (4) and is provided with rolling element between supporter (6) and axle (4); Described three prop carriers are separately positioned on the top, side, lower plane of bracing frame (10); The tensile axis (2) that is arranged on the prop carrier of bracing frame top, side pass bracing frame (10) and with the bracing frame threaded engagement, the tensile axis of the prop carrier of support frame as described above top, side (2) other end connects handle (1); Constitute tensile axis (2) and under handle (1) effect, drive the structure that supporter (6) moves relative to part to be processed (7); Tensile axis (9) other end of support frame as described above lower plane upper support carrier is threaded with the bracing frame lower plane, constitutes part to be processed (7) lower support and height adjustable structure, and is provided with the locking nut (8) in addition fastening to tensile axis (9); The supporter (6) of support frame as described above top, lower plane upper support carrier is symmetrical arranged up and down and is coaxial configuration; Support frame as described above (10) is fixed on lathe big palette (11) and goes up and move with big palette (11).

2. the lathe of a kind of new structure according to claim 1 is characterized in that with knife system: the supporter (6) of support frame as described above top, lower plane upper support carrier departs from part 7 center lines 1～2mm to forward and backward both sides respectively with the contact wire of part (7).

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