Knife rest for unfolding knife of special machine

Abstract

The utility model discloses a knife rest for a special machine expanding knife, which belongs to the technical field of lathe knife rests and comprises a fixed base, a fixed knife rest is rotatably sleeved at the upper end of the fixed base, a fixed cap is sleeved at the upper end of the fixed knife rest in a threaded manner, and a fixed bayonet is fixedly formed in the center of the fixed knife rest. A fixed clamping opening is formed in the upper end of the inner side of the fixed knife rest, a fixed pressing plate is arranged at the upper end of the inner side of the fixed clamping opening, limiting sliding columns are fixedly connected to the two sides of the fixed pressing plate and slidably connected to the two sides of the fixed knife rest in a sleeving mode, and a first threaded rod is rotationally connected to the center of the fixed pressing plate and connected with the fixed knife rest in a threaded sleeving mode. According to the arrangement, pressing plate type clamping is adopted, time waste caused by mounting and dismounting of a plurality of screws is avoided, meanwhile, by increasing the contact area, a certain protection effect can be achieved during pressing, and damage caused by abutting of the screws is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of lathe tool rests, and in particular relates to a tool rest for a special machine tool. Background Art

[0002] At present, the existing hole-shaped rollers are processed by CNC lathes, and the tool used is a forming knife. The hole-shaped roller is the main spare part of rolled steel, which is heavy and large in size. The processing volume of the hole-shaped roller is large, and some holes are very deep. When the hole-shaped roller is processed by an ordinary heavy-duty lathe, the existing tool holder structure cannot meet the processing requirements of the hole-shaped roller, specifically the poor stability of the turning process and insufficient bearing capacity.

[0003] The existing tool holder usually uses three screws to fix the tool. On the one hand, using multiple screws for fixing, disassembling and installing is very time-consuming. On the other hand, the contact area of ​​the screws is small, and the pressure on the tool during abutment and fixing is too great, which can easily cause damage to the tool. There are certain limitations. Utility Model Content

[0004] The purpose of the utility model is to provide a tool holder for a special machine to display the knife, so as to solve the problem proposed in the above background technology that the existing tool holder usually fixes the knife with three screws. On the one hand, it is very time-consuming to use multiple screws for fixing, disassembling and installing. On the other hand, the contact area of ​​the screws is small, and the pressure on the knife during the abutment and fixing is too great, which can easily cause damage to the knife and has certain limitations.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a tool holder for a special machine knife display, comprising a fixed base, a fixed tool holder is rotatably sleeved on the upper end of the fixed base, a fixed cap is threadedly sleeved on the upper end of the fixed tool holder, a fixed bayonet is fixedly opened at the center of the fixed tool holder, a fixed pressure plate is arranged at the inner upper end of the fixed bayonet, limited sliding columns are fixedly connected to both sides of the fixed pressure plate, the limited sliding columns are slidably sleeved on both sides of the fixed tool holder, a first threaded rod is rotatably connected to the center of the fixed pressure plate, and the first threaded rod is threadedly sleeved on the fixed tool holder.

[0006] Preferably, a rotation groove is fixedly opened at the upper end of the fixed base, a rotation rod is fixedly connected to the interior of the rotation groove, and a threaded tooth groove is fixedly opened at the upper end of the rotation rod.

[0007] Preferably, a protective ring is rotatably connected inside the rotating groove, an anti-slip tooth groove is fixedly opened on the inner wall of the protective ring, a sleeve is fixedly connected to the lower end of the fixed tool holder, an anti-slip rack is fixedly connected to the surface of the sleeve, and the sleeve is slidably sleeved inside the rotating groove.

[0008] Preferably, a square slot is fixedly opened on one side of the fixed base, the interior of the square slot is slidably connected to an abutting fixed block, the interior of the square slot is rotatably connected to a second threaded rod, the second threaded rod is threadedly sleeved with the abutting fixed block, and one end of the second threaded rod is fixedly connected to a rotating handle.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] 1. The utility model adopts a pressure plate type clamping, which avoids the time wasted in installing and removing multiple screws. At the same time, by increasing the contact area, it can play a certain protective role when clamping, avoiding damage caused by the abutment of the screws.

[0011] 2. The utility model fixes the tool holder by two methods: side abutment and upper thread fixing. The fixing effect is good, and the shaking of the tool holder during the processing is effectively prevented, which is more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the structure of the fixed base of the utility model;

[0014] Figure 3 This is a schematic diagram of the bottom structure of the fixed tool holder of the utility model;

[0015] Figure 4 It is a schematic diagram of the internal structure of the fixed base of the utility model.

[0016] In the figure: 1. fixed base; 2. fixed tool holder; 3. fixed cap; 4. fixed bayonet; 5. fixed pressure plate; 6. limit slide column; 7. first threaded rod; 10. rotating groove; 11. protective ring; 12. anti-skid tooth groove; 13. rotating rod; 14. threaded tooth groove; 15. sleeve; 16. anti-skid rack; 17. square slot; 18. second threaded rod; 19. rotating handle; 20. abutting fixed block. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1-4The utility model provides a technical solution: a tool holder for a special machine tool display, comprising a fixed base 1, a fixed tool holder 2 is rotatably sleeved on the upper end of the fixed base 1, a fixed cap 3 is threadedly sleeved on the upper end of the fixed tool holder 2, a fixed bayonet 4 is fixedly opened at the center of the fixed tool holder 2, a fixed pressure plate 5 is arranged at the inner upper end of the fixed bayonet 4, limited sliding columns 6 are fixedly connected to both sides of the fixed pressure plate 5, the limited sliding columns 6 are slidably sleeved on both sides of the fixed tool holder 2, a first threaded rod 7 is rotatably connected to the center of the fixed pressure plate 5, and the first threaded rod 7 is threadedly sleeved on the fixed tool holder 2.

[0019] In this embodiment, the fixed tool holder 2 can be fixed by the set fixing cap 3, and the tool is placed inside the fixed bayonet 4 after fixation. At this time, the first threaded rod 7 is rotated to make the first threaded rod 7 and the fixed tool holder 2 rotate in a threaded manner, and the bottom fixed pressure plate 5 can only slide under the limiting action of the limiting slide columns 6 on both sides, so that the first threaded rod 7 can drive the fixed pressure plate 5 to perform threaded lifting and lowering, thereby clamping the tool. This clamping method adopts a pressure plate clamping method, which avoids the time wasted on installing and disassembling multiple screws. At the same time, by increasing the contact area, it can play a certain protective role during clamping to avoid damage caused by the abutment of the screws.

[0020] Specifically, a rotation groove 10 is fixedly formed at the upper end of the fixed base 1 , a rotation rod 13 is fixedly connected inside the rotation groove 10 , and a threaded tooth groove 14 is fixedly formed at the upper end of the rotation rod 13 .

[0021] In this embodiment, the fixed tool holder 2 can be threadedly fixed by the cooperation between the rotating rod 13 and the fixing cap 3, so that the fixing effect of the fixed tool holder 2 is better.

[0022] Specifically, a protective ring 11 is rotatably connected inside the rotating groove 10, and an anti-skid tooth groove 12 is fixedly opened on the inner wall of the protective ring 11. A sleeve 15 is fixedly connected to the lower end of the fixed tool holder 2, and an anti-skid rack 16 is fixedly connected to the surface of the sleeve 15. The sleeve 15 is slidably sleeved inside the rotating groove 10.

[0023] In this embodiment, the rotation groove 10 is provided to make the rotation of the fixed tool holder 2 more stable, and to prevent shaking during processing.

[0024] Specifically, a square slot 17 is fixedly opened on one side of the fixed base 1, and a butt fixing block 20 is slidably connected inside the square slot 17. A second threaded rod 18 is rotatably connected inside the square slot 17. The second threaded rod 18 is threadedly sleeved with the butt fixing block 20, and one end of the second threaded rod 18 is fixedly connected to a rotating handle 19.

[0025] In this embodiment, the second threaded rod 18 is driven to rotate by rotating the rotating handle 19. After the second threaded rod 18 is rotated, it rotates with the abutment fixing block 20. Since the abutment fixing block 20 is limited inside the square slot 17 and can only slide, the second threaded rod 18 can drive the abutment fixing block 20 to translate by thread, and the rotating slot 10 is limited and abutted and fixed. This abutment and fixing method can further fix the fixed tool holder 2 to prevent the tool from shifting during the processing, resulting in processing deviations and affecting the processing efficiency.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tool holder for a special machine tool, comprising a fixed base (1), characterized in that: The upper end of the fixed base (1) is rotatably sleeved with a fixed tool holder (2), the upper end of the fixed tool holder (2) is threadedly sleeved with a fixed cap (3), the center of the fixed tool holder (2) is fixedly provided with a fixed bayonet (4), the inner upper end of the fixed bayonet (4) is provided with a fixed pressure plate (5), both sides of the fixed pressure plate (5) are fixedly connected with limit slides (6), the limit slides (6) are slidably sleeved on both sides of the fixed tool holder (2), the center of the fixed pressure plate (5) is rotatably connected with a first threaded rod (7), and the first threaded rod (7) is threadedly sleeved with the fixed tool holder (2).

2. The tool holder for a special machine according to claim 1, characterized in that: A rotation groove (10) is fixedly provided at the upper end of the fixed base (1), a rotation rod (13) is fixedly connected inside the rotation groove (10), and a threaded tooth groove (14) is fixedly provided at the upper end of the rotation rod (13).

3. The tool holder for a special machine according to claim 2, characterized in that: A protective collar (11) is rotatably connected inside the rotating groove (10), an anti-skid tooth groove (12) is fixedly provided on the inner wall of the protective collar (11), a sleeve (15) is fixedly connected to the lower end of the fixed tool holder (2), an anti-skid rack (16) is fixedly connected to the surface of the sleeve (15), and the sleeve (15) is slidably sleeved inside the rotating groove (10).

4. The tool holder for a special machine according to claim 1, characterized in that: A square slot (17) is fixedly provided on one side of the fixed base (1), abutting fixed blocks (20) are slidably connected inside the square slot (17), a second threaded rod (18) is rotatably connected inside the square slot (17), the second threaded rod (18) is threadedly sleeved with the abutting fixed blocks (20), and one end of the second threaded rod (18) is fixedly connected to a rotating handle (19).

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