Feeding tool rest for eccentric circle turning of numerical control lathe

Abstract

The utility model belongs to the field of feeding tool rests for eccentric circle turning of numerically controlled lathes, and discloses a feeding tool rest for eccentric circle turning of numerically controlled lathes, which comprises a tool rest base, a top plate is fixedly connected to the surface of the tool rest base, a plurality of fixing bolts are in threaded connection to the surface of the top plate, and a limiting structure is arranged on the surface of the tool rest base. The limiting structure comprises a plurality of rectangular grooves, the rectangular grooves are evenly formed in the surface of the tool rest base, rectangular plates are slidably inserted into the inner walls of the rectangular grooves, and a plurality of positioning holes are formed in the surfaces of the rectangular plates. The tool rest base is arranged on the tool rest base, so that a tool installed on the tool rest base is supported, the phenomenon that a supporting point is not stable enough due to the fact that the contact area between the bottom of the tool and the tool rest base is small is avoided, it is guaranteed that eccentric circle turning can be conducted stably, and the turning production quality is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of a feed tool holder for eccentric circle turning of a numerically controlled lathe, and more specifically to a feed tool holder for eccentric circle turning of a numerically controlled lathe. Background Art

[0002] In the eccentric circle turning of CNC lathes, the feed tool holder is the component for installing the tool and realizing the movement of the tool along the set feed direction. It is mainly used to accurately move the tool to the processing position and control the feed speed and feed amount of the tool during the processing. The tool holder body is the installation carrier of the tool. It has multiple tool positions and can be installed with different types of turning tools, such as external cylindrical turning tools, internal hole turning tools, etc. When turning the eccentric circle, the appropriate tool is selected according to the processing requirements and installed on the tool holder body. The feed tool holder can accurately control the depth of the tool cutting into the workpiece. When rough turning the eccentric circle, a larger feed amount can be set to quickly remove excess material. In the fine turning stage, the feed amount can be reduced to improve the surface finish of the eccentric circle.

[0003] In the prior art, since the position of the eccentric circle is offset relative to the center of the lathe spindle, it is easy to interfere with the workpiece, fixture or other parts of the lathe during the turning process. By fixing the tool outward for a longer length, the position of the tool can be adjusted so that it has enough space during the cutting process to avoid collision with other parts. When the tool is fixed outward for a longer length, the position of the center of gravity of the tool changes and the center of gravity shifts outward. The center of gravity of the extended tool is far away from the support point, and it is more likely to lose balance when disturbed by external force, which in turn causes the tool to fall off the tool holder. Therefore, we propose a feed tool holder for eccentric circle turning of a CNC lathe to solve the above-mentioned problems. Utility Model Content

[0004] In view of the problems existing in the prior art, the purpose of the utility model is to provide a feed tool holder for eccentric circle turning of a CNC lathe, which supports the tool installed on the tool holder base by adjusting the length of the rectangular plate extending out of the tool holder base, thereby avoiding the problem that the support point of the tool is not stable enough due to the small contact area between the bottom of the tool and the tool holder base, thereby ensuring that the eccentric circle turning can be carried out stably and the production quality of turning is guaranteed.

[0005] To solve the above problems, the utility model adopts the following technical solutions.

[0006] A feed tool holder for eccentric circle turning of a CNC lathe comprises a tool holder base, a top plate is fixedly connected to the surface of the tool holder base, a plurality of fixing bolts are threadedly connected to the surface of the top plate, a limiting structure is provided on the surface of the tool holder base, the limiting structure comprises a plurality of rectangular grooves, a plurality of the rectangular grooves are evenly arranged on the surface of the tool holder base, a rectangular plate is slidably inserted into the inner wall of the rectangular groove, a plurality of positioning holes are arranged on the surface of the rectangular plate, a plurality of latches are slidably inserted into the surface of the tool holder base, and the size of the latches matches the size of the positioning holes.

[0007] Preferably, the arc surface of the latch is sleeved with a spring, and two ends of the spring are respectively fixedly connected to the latch and the tool holder base.

[0008] Preferably, a plurality of transverse grooves are formed on the surface of the rectangular plate, a plurality of longitudinal grooves are formed on the surface of the rectangular plate, and the plurality of transverse grooves are connected to the plurality of longitudinal grooves.

[0009] Preferably, guide grooves are provided on both sides of the inner wall of the rectangular groove, and two guide blocks are fixedly connected to the surface of the rectangular plate, and the guide blocks slide with the inner wall of the guide groove.

[0010] Preferably, a plurality of support arms are fixedly connected to the surface of the tool holder base, a threaded rod is threadedly penetrated through the surface of the support arm, and a clamping block is rotatably connected to one end of the threaded rod.

[0011] Preferably, two guide rods are slidably penetrated through the surface of the support arm, and the two guide rods are fixedly connected to the clamping block.

[0012] Beneficial effects: Compared with the prior art, the advantages of the utility model are:

[0013] (1) This solution supports the tool mounted on the tool holder base by adjusting the length of the rectangular plate extending out of the tool holder base, thereby avoiding the problem that the support point of the tool is not stable due to the small contact area between the bottom of the tool and the tool holder base, thereby ensuring that the eccentric circle turning can be carried out stably and the turning production quality is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the bottom plate of the tool holder of the utility model;

[0016] Figure 3 It is a structural schematic diagram of the rectangular plate of the utility model;

[0017] Figure 4 For this utility model Figure 2 A in the enlarged view;

[0018] Figure 5 It is a structural schematic diagram of the clamping block of the utility model.

[0019] Description of the numbers in the figure:

[0020] 1. Tool holder base; 2. Top plate; 3. Fixing bolt; 4. Limiting structure; 401. Rectangular groove; 402. Rectangular plate; 403. Positioning hole; 404. Latch; 405. Spring; 406. Horizontal groove; 407. Longitudinal groove; 408. Guide groove; 409. Guide block; 410. Support arm; 411. Threaded rod; 412. Block; 413. Guide rod. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention specification; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field without creative work based on the embodiments of the present invention are within the scope of protection of the present invention.

[0022] Example 1: Please refer to Figure 1 - Figure 5 A feed tool holder for eccentric circle turning of a CNC lathe comprises a tool holder base 1, a top plate 2 is fixedly connected to the surface of the tool holder base 1, a plurality of fixing bolts 3 are threadedly connected to the surface of the top plate 2, a limiting structure 4 is provided on the surface of the tool holder base 1, the limiting structure 4 comprises a plurality of rectangular grooves 401, the plurality of rectangular grooves 401 are evenly arranged on the surface of the tool holder base 1, a rectangular plate 402 is slidably inserted into the inner wall of the rectangular groove 401, a plurality of positioning holes 403 are arranged on the surface of the rectangular plate 402, a plurality of latches 404 are slidably inserted into the surface of the tool holder base 1, the size of the latches 404 is matched with the size of the positioning holes 403, a spring 405 is sleeved on the arc surface of the latches 404, and the two ends of the spring 405 are respectively fixedly connected to the latches 404 and the tool holder base 1. A plurality of transverse grooves 406 are provided on the surface of the rectangular plate 402, a plurality of longitudinal grooves 407 are provided on the surface of the rectangular plate 402, the plurality of transverse grooves 406 are connected to the plurality of longitudinal grooves 407, guide grooves 408 are provided on both sides of the inner wall of the rectangular groove 401, two guide blocks 409 are fixedly connected to the surface of the rectangular plate 402, and the guide blocks 409 slide with the inner wall of the guide groove 408. A plurality of support arms 410 are fixedly connected to the surface of the tool holder base 1, a threaded rod 411 is threadedly penetrated through the surface of the support arm 410, one end of the threaded rod 411 is rotatably connected to a clamping block 412, and two guide rods 413 are slidably penetrated through the surface of the support arm 410, and both guide rods 413 are fixedly connected to the clamping block 412.

[0023] Working principle: When the tool needs to be installed on the tool holder base 1 to turn the eccentric circle, first pull the latch 404, the latch 404 moves in the tool holder base 1 and gradually disengages from the positioning hole 403, the movement of the latch 404 stretches the spring 405, when the latch 404 disengages from the positioning hole 403, pull the rectangular plate 402, the rectangular plate 402 moves to slide in the rectangular groove 401 and gradually disengages from the rectangular groove 401, the movement of the rectangular plate 402 drives the guide block 409 along the guide groove The inner wall of 408 slides, and the guide groove 408 reaches the moving path of the limiting guide block 409, thereby limiting the moving path of the rectangular plate 402, thereby preventing the rectangular plate 402 from escaping from the rectangular groove 401 when moving. When the rectangular plate 402 is pulled out to a suitable length, the latch 404 is released, and the latch 404 is inserted into the positioning hole 403 with the help of the contraction force of the spring 405. The latch 404 reaches the position of the positioning rectangular plate 402, and then the tool is placed on the surface of the tool holder base 1, and the tool will also fit On the surface of the rectangular plate 402, the rectangular plate 402 will support the tool, and the transverse grooves 406 and the longitudinal grooves 407 on the surface of the rectangular plate 402 can improve the friction when the tool is fitted. When the tool is placed in a suitable position, the fixing bolt 3 on the top plate 2 is rotated, and the fixing bolt 3 will move in the top plate 2 with the help of the thread, and the bolt will move in the direction close to the tool. After the bolt moves to a suitable position, it will apply pressure on the tool, thereby squeezing the tool on the surface of the tool holder base 1, and then the threaded rod 411 is rotated. The rotation of the threaded rod 411 will move in the support arm 410 with the help of the thread. The movement of the threaded rod 411 will drive the block 412 to move in the direction close to the tool. When the block 412 moves, it will drive the guide rod 413 to move in the support arm 410. The guide rod 413 can limit the moving path of the block 412, thereby preventing the block 412 from rotating when moving. When the block 412 moves to a suitable position, the block 412 will squeeze the tool, thereby further improving the stability of the tool fixation.

[0024] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A feed tool holder for eccentric turning of a CNC lathe, comprising a tool holder base (1), a top plate (2) being fixedly connected to the surface of the tool holder base (1), a plurality of fixing bolts (3) being threadedly connected to the surface of the top plate (2), a limiting structure (4) being provided on the surface of the tool holder base (1), and characterized in that: The limiting structure (4) comprises a plurality of rectangular grooves (401), wherein the plurality of rectangular grooves (401) are evenly arranged on the surface of the tool holder base (1), a rectangular plate (402) is slidably inserted into the inner wall of the rectangular groove (401), a plurality of positioning holes (403) are arranged on the surface of the rectangular plate (402), and a plurality of latches (404) are slidably inserted into the surface of the tool holder base (1), wherein the size of the latches (404) matches the size of the positioning holes (403).

2. The feed tool holder for eccentric turning of a CNC lathe according to claim 1, characterized in that: The arc surface of the latch (404) is sleeved with a spring (405), and the two ends of the spring (405) are respectively fixedly connected to the latch (404) and the tool holder base (1).

3. The feed tool holder for eccentric turning of a CNC lathe according to claim 1, characterized in that: A plurality of transverse grooves (406) are provided on the surface of the rectangular plate (402), and a plurality of longitudinal grooves (407) are provided on the surface of the rectangular plate (402), wherein the plurality of transverse grooves (406) are connected to the plurality of longitudinal grooves (407).

4. The feed tool holder for eccentric turning of a CNC lathe according to claim 1, characterized in that: Guide grooves (408) are provided on both sides of the inner wall of the rectangular groove (401), and two guide blocks (409) are fixedly connected to the surface of the rectangular plate (402), and the guide blocks (409) slide with the inner wall of the guide groove (408).

5. The feed tool holder for eccentric turning of a CNC lathe according to claim 1, characterized in that: A plurality of support arms (410) are fixedly connected to the surface of the tool holder base (1); a threaded rod (411) is threadedly penetrated through the surface of the support arm (410); and a clamping block (412) is rotatably connected to one end of the threaded rod (411).

6. The feed tool holder for eccentric turning of a CNC lathe according to claim 5, characterized in that: Two guide rods (413) are slidably penetrated through the surface of the support arm (410), and the two guide rods (413) are fixedly connected to the clamping block (412).

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