A tool bit fixing structure for a lathe

Abstract

The application discloses a tool bit fixing structure for a lathe, which comprises a tool bar, first screw holes are formed on the front and back sides of the left end of the top of the tool bar, and the inner surfaces of the first screw holes are connected with tool bit fixing members through first inner hexagonal bolts. The second inner hexagonal bolt is threaded out from the through hole where the tool bit needs to be installed, and then is screwed into the second screw hole through an external hexagonal wrench. Then, the first inner hexagonal bolt is threaded out from the inner surfaces of the second reserved hole and the first reserved hole in sequence, and is screwed into the first screw hole through an external hexagonal wrench. At this time, the pressing rod can limit the top of the tool bit. In this process, the angle of the tool bit fixing member can be freely adjusted, so that the two tool bit fixing members can effectively fix different edges and corners of different types of tool bits. Specifically, the arc-shaped part can fix the tool bit with an arc-shaped structure, and the planar part can fix the tool bit with a planar structure.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lathe, in particular to a tool bit fixing structure for lathe. BACKGROUND

[0002] The lathe is the most important cutting machine tool in the metal cutting machine tool, and is the most in the general machine manufacturing factory. It is also called the working mother machine. Drills, reamers, reamers, taps, dies and knurling tools can be used for corresponding processing on the lathe. The function of the lathe is to cut and process various sizes and shapes of rotating surfaces and helical surfaces. The lathe needs to use a tool bit when processing objects. In order to improve the fixation of the tool bit, a tool rod is needed. However, the existing tool rod has a fixed structure of the tool bit slot, so that one tool rod can only fix one type of tool bit. This not only increases the purchase cost of the tool rod, but also brings inconvenience to people's use. Therefore, we propose a tool bit fixing structure for lathe. SUMMARY

[0003] The purpose of the present application is to provide a tool bit fixing structure for lathe to solve the problems in the background art.

[0004] To achieve the above purpose, the present application provides the following technical scheme: a tool bit fixing structure for lathe, comprising a tool rod, first screw holes are formed on the front and back of the left end of the top of the tool rod, and the inner surface of the first screw hole is connected with a tool bit fixing piece through a first inner hexagonal bolt, a first support is fixedly connected to the top of the tool rod and located on the right side of the first screw hole, and a first screw rod is threadedly connected to the inner surface of the first support, a movable plate is movably connected to the left side of the first screw rod through a bearing, a third support is fixedly connected to the top of the movable plate, and a tooth plate is movably connected to the left end of the inner surface of the third support.

[0005] Preferably, a second screw hole is formed on the left end of the inner surface of the tool rod, a second inner hexagonal bolt is threadedly connected to the inner surface of the second screw hole, a protrusion is inserted into the inner hexagonal hole of the second inner hexagonal bolt, a second screw rod is movably connected to the top of the protrusion through a bearing, a second gear is fixedly connected to the upper end of the outer surface of the second screw rod, and a second knob is fixedly connected to the top of the second screw rod.

[0006] Preferably, a second support is threadedly connected to the outer surface of the second screw rod, a third screw hole is formed in the bottom of the second support, a screw rod is threadedly connected to the inner surface of the third screw hole, and a countersunk hole is formed at the connection between the tool rod and the screw rod.

[0007] Preferably, the outer surface of the first inner hexagonal bolt is provided with a pressing rod, the connecting position of the pressing rod and the first inner hexagonal bolt is provided with a second reserved hole, the connecting position of the cutter bar and the movable plate is provided with a first sliding groove, the right side of the first screw rod is fixedly connected with a first knob, and the top of the toothed plate is fixedly connected with a first gear.

[0008] Preferably, the right end of the top of the second support and the third support is fixedly connected with a sleeve, the inner cavity of the sleeve is movably connected with a toothed rod through a damper and a spring, the damper is located on the inner side of the spring, the right end of the top of the toothed rod is fixedly connected with a push block, and the connecting position of the sleeve and the push block is provided with a second sliding groove.

[0009] Preferably, the cutter head fixing part comprises a fixed rod, the outer side of the fixed rod is provided with a tooth, the connecting position of the fixed rod and the first inner hexagonal bolt is provided with a first reserved hole, the rear end of the inner side of the fixed rod is provided with an arc-shaped part, and the front end of the inner side of the fixed rod is provided with a planar part.

[0010] Compared with the prior art, the present application has the following advantages:

[0011] 1、The second inner hexagonal bolt is passed out from the through hole where the cutter head needs to be installed, and is screwed into the second screw hole through the external hexagonal wrench, then the first inner hexagonal bolt is sequentially passed out from the inner surfaces of the second reserved hole and the first reserved hole, and is screwed into the first screw hole through the external hexagonal wrench, at this time, the pressing rod can limit the top of the cutter head, and in this process, people can freely adjust the angle of the cutter head fixing part, so that the two cutter head fixing parts can effectively fix different edges and corners of different types of cutter heads, specifically, the arc-shaped part can fix the cutter head with an arc-shaped structure, the planar part can fix the cutter head with a planar structure, when the fixing is completed, the deflection angle of the toothed plate is adjusted, and the first screw rod is screwed through the first knob, which can drive the third support to move left under the cooperation of the bearing, the movable plate, the first support and the first sliding groove, so that the toothed plate and the tooth mesh, further improving the fixing effect of the cutter head fixing part on different edges and corners of the cutter head.

[0012] 2、People can pass the screw rod out from the countersunk hole and screw it into the third screw hole through the external screwdriver according to needs, and the second support can be fixed on the surface of the cutter bar, then the second screw rod is screwed through the second knob, which can drive the protruding block to move down under the cooperation of the bearing, so that the protruding block limits the inner hexagonal hole of the second inner hexagonal bolt, further improving the fixing effect of the second inner hexagonal bolt on the cutter head.

[0013] 3、The sleeve, tooth rod, damper, spring, second sliding groove and push block arranged on the top of the second support can limit the second gear, so that the loosening of the second screw rod can be avoided, and the sleeve, tooth rod, damper, spring, second sliding groove and push block arranged on the top of the third support can limit the first gear, so that the loosening of the tooth plate can be avoided. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure in the first perspective state of the application;

[0015] Figure 2 It is a schematic diagram of the three-dimensional structure in the second perspective state of the application;

[0016] Figure 3 It is a schematic diagram of the countersunk hole structure of the application;

[0017] Figure 4 It is a schematic diagram of the second screw hole structure of the application;

[0018] Figure 5 It is a schematic diagram of the tool bit fixing member structure of the application;

[0019] Figure 6 It is a schematic diagram of the spring structure of the application.

[0020] In the figure: tool rod 1, second support 2, sleeve 3, second knob 4, second gear 5, second reserved hole 6, second internal hexagonal bolt 7, pressing rod 8, tool bit fixing member 9, fixing rod 91, tooth 92, first reserved hole 93, arc-shaped part 94, flat part 95, first screw rod 10, first knob 11, movable plate 12, first gear 13, first internal hexagonal bolt 14, first support 15, screw rod 16, countersunk hole 17, protruding block 18, second screw rod 19, third screw hole 20, first screw hole 21, second screw hole 22, first sliding groove 23, tooth rod 24, damper 25, spring 26, second sliding groove 27, push block 28, third support 29, tooth plate 30. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the application.

[0022] The knife bar 1, the second support 2, the sleeve 3, the second knob 4, the second gear 5, the second reserved hole 6, the second internal hexagonal bolt 7, the pressing rod 8, the tool bit fixing piece 9, the fixed rod 91, the tooth 92, the first reserved hole 93, the arc-shaped part 94, the flat part 95, the first screw rod 10, the first knob 11, the movable plate 12, the first gear 13, the first internal hexagonal bolt 14, the first support 15, the screw rod 16, the countersunk hole 17, the protruding block 18, the second screw rod 19, the third screw hole 20, the first screw hole 21, the second screw hole 22, the first sliding groove 23, the toothed rod 24, the damper 25, the spring 26, the second sliding groove 27, the push block 28, the third support 29 and the toothed plate 30 components of the present application are all general standard components or components known to those skilled in the art, and their structures and principles can be known by technical personnel or obtained through conventional experimental methods. Example One

[0023] Please refer to Figure 1 , Figure 2 , Figure 4 and Figure 5The utility model provides a kind of cutting tool fixing device, including cutter bar 1, the front and rear sides of the top left end of cutter bar 1 are both provided with first screw hole 21, and the inner surface of first screw hole 21 is connected with cutter head fixing part 9 by first inner hexagonal bolt 14, the top of cutter bar 1 and being fixedly connected with first support 15 on the right side of first screw hole 21, and the inner surface of first support 15 is threadedly connected with first screw rod 10, the left side of first screw rod 10 is movably connected with movable plate 12 by bearing, the top of movable plate 12 is fixedly connected with third support 29, and the left end of the inner surface of third support 29 is movably connected with toothed plate 30, the outer surface of first inner hexagonal bolt 14 is provided with pressure rod 8, second reserved hole 6 is set in the connecting place of pressure rod 8 and first inner hexagonal bolt 14, first sliding slot 23 is set in the connecting place of cutter bar 1 and movable plate 12, the right side of first screw rod 10 is fixedly connected with first knob 11, and the top of toothed plate 30 is fixedly connected with first gear 13, cutter head fixing part 9 includes fixed rod 91, the outside of fixed rod 91 is provided with tooth 92, first reserved hole 93 is set in the connecting place of fixed rod 91 and first inner hexagonal bolt 14, the rear end of the inside of fixed rod 91 is provided with arc part 94, and the front end of the inside of fixed rod 91 is provided with flat part 95, second inner hexagonal bolt 7 is worn out from the through hole where the cutter head needs to be installed, and is screwed into second screw hole 22 by external hex wrench, then first inner hexagonal bolt 14 is sequentially worn out from the inner surface of second reserved hole 6 and first reserved hole 93, and is screwed into first screw hole 21 by external hex wrench, at this time, pressure rod 8 can limit the top of cutter head, and in this process, people can freely adjust the angle of cutter head fixing part 9, so that two cutter head fixing parts 9 can effectively fix different edges and corners of different types of cutter heads, specifically: arc part 94 can fix the cutter head with arc-shaped structure, flat part 95 can fix the cutter head with flat structure, when fixing is completed, the deflection angle of toothed plate 30 is adjusted, and first screw rod 10 is screwed by first knob 11, under the cooperation of bearing, movable plate 12, first support 15 and first sliding slot 23, third support 29 can be driven to move left, so that toothed plate 30 and tooth 92 are engaged, further improve the fixing effect of cutter head fixing part 9 on different edges and corners of cutter head. Embodiment two:

[0024] Please refer to Figure 1 And Figure 3The left end of the inner surface of the cutter bar 1 is provided with a second threaded hole 22, the inner surface of the second threaded hole 22 is threadedly connected with a second inner hexagonal bolt 7, the inner hexagonal hole of the second inner hexagonal bolt 7 is inserted with a protrusion 18, the top of the protrusion 18 is movably connected with a second screw rod 19 through a bearing, the upper end of the outer surface of the second screw rod 19 is fixedly connected with a second gear 5, the top of the second screw rod 19 is fixedly connected with a second knob 4, the outer surface of the second screw rod 19 is threadedly connected with a second support 2, the bottom of the second support 2 is provided with a third threaded hole 20, the inner surface of the third threaded hole 20 is threadedly connected with a screw rod 16, and the connecting position of the cutter bar 1 and the screw rod 16 is provided with a counterbore 17, the screw rod 16 can be taken out from the counterbore 17 and screwed into the third threaded hole 20 through an external screwdriver according to the needs of people, the second support 2 can be fixed on the surface of the cutter bar 1, then the second knob 4 is screwed to drive the second screw rod 19, and the protrusion 18 can be driven to move downward under the cooperation of the bearing, so that the protrusion 18 can limit the inner hexagonal hole of the second inner hexagonal bolt 7, and the fixing effect of the second inner hexagonal bolt 7 on the cutter head is further improved. Example three:

[0025] Please refer to Figure 6 The right end of the top of the second support 2 and the third support 29 is fixedly connected with a sleeve 3, the inner cavity of the sleeve 3 is movably connected with a tooth rod 24 through a damper 25 and a spring 26, the damper 25 is located on the inner side of the spring 26, the right end of the top of the tooth rod 24 is fixedly connected with a push block 28, and the connecting position of the sleeve 3 and the push block 28 is provided with a second sliding groove 27, the sleeve 3, the tooth rod 24, the damper 25, the spring 26, the second sliding groove 27 and the push block 28 arranged on the top of the second support 2 can limit the second gear 5, so that the loosening phenomenon of the second screw rod 19 can be avoided, and the sleeve 3, the tooth rod 24, the damper 25, the spring 26, the second sliding groove 27 and the push block 28 arranged on the top of the third support 29 can limit the first gear 13, so that the loosening phenomenon of the tooth plate 30 can be avoided.

[0026] The working principle of the present application is that the second internal hexagonal bolt 7 is threaded out of the through hole where the tool bit needs to be installed, and is screwed into the second screw hole 22 through the external hexagonal wrench, then the first internal hexagonal bolt 14 is threaded out of the inner surface of the second reserved hole 6 and the first reserved hole 93 in turn, and is screwed into the first screw hole 21 through the external hexagonal wrench, at this time the pressure rod 8 can limit the top of the tool bit, and in this process, people can freely adjust the angle of the tool bit fixing piece 9, so that the two tool bit fixing pieces 9 can effectively fix different edges and corners of different types of tool bits, specifically: the arc-shaped part 94 can fix the tool bit with an arc-shaped edge and corner, and the flat part 95 can fix the tool bit with a flat edge and corner, when the fixing is completed, the deflection angle of the toothed plate 30 is adjusted, and the first screw rod 10 is screwed through the first knob 11, which can drive the third bracket 29 to move left under the cooperation of the bearing, the movable plate 12, the first bracket 15 and the first sliding groove 23, so that the toothed plate 30 is engaged with the teeth 92, further improving the fixing effect of the tool bit fixing piece 9 on different edges and corners of the tool bit, people can thread the screw rod 16 out of the countersunk hole 17 and screw it into the third screw hole 20 through the external screwdriver, which can fix the second bracket 2 on the surface of the tool bar 1, then the second screw rod 19 is screwed through the second knob 4, which can drive the lug 18 to move downward under the cooperation of the bearing, so that the lug 18 limits the internal hexagonal hole of the second internal hexagonal bolt 7, further improving the fixing effect of the second internal hexagonal bolt 7 on the tool bit, the sleeve 3, the toothed rod 24, the damper 25, the spring 26, the second sliding groove 27 and the push block 28 arranged on the top of the second bracket 2 can limit the second gear 5, so that the second screw rod 19 can avoid loosening, the sleeve 3, the toothed rod 24, the damper 25, the spring 26, the second sliding groove 27 and the push block 28 arranged on the top of the third bracket 29 can limit the first gear 13, so that the toothed plate 30 can avoid loosening.

[0027] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and changes can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A tool bit fixing structure for a lathe, comprising a tool bar (1), characterized in that: The left end of the top of the cutter bar (1) is provided with a first screw hole (21) on both sides, and the inner surface of the first screw hole (21) is connected with a cutter head fixing piece (9) through a first inner hexagonal bolt (14), the top of the cutter bar (1) is fixedly connected with a first support (15) on the right side of the first screw hole (21), and the inner surface of the first support (15) is threadedly connected with a first screw rod (10), the left side of the first screw rod (10) is movably connected with a movable plate (12) through a bearing, and the top of the movable plate (12) is fixedly connected with a third support (29), and the left end of the inner surface of the third support (29) is movably connected with a toothed plate (30). The left end of the inner surface of the cutter bar (1) is provided with a second screw hole (22), the inner surface of the second screw hole (22) is threadedly connected with a second inner hexagonal bolt (7), the inner hexagonal hole of the second inner hexagonal bolt (7) is inserted with a protruding block (18), the top of the protruding block (18) is movably connected with a second screw rod (19) through a bearing, the outer surface of the second screw rod (19) is fixedly connected with a second gear (5) at the upper end, and the top of the second screw rod (19) is fixedly connected with a second knob (4). The outer surface of the second screw rod (19) is threadedly connected with a second support (2), the bottom of the second support (2) is provided with a third screw hole (20), the inner surface of the third screw hole (20) is threadedly connected with a screw rod (16), and the connecting part of the cutter bar (1) and the screw rod (16) is provided with a countersunk hole (17). The outer surface of the first inner hexagonal bolt (14) is provided with a pressure rod (8), the connecting part of the pressure rod (8) and the first inner hexagonal bolt (14) is provided with a second reserved hole (6), the connecting part of the cutter bar (1) and the movable plate (12) is provided with a first sliding groove (23), the right side of the first screw rod (10) is fixedly connected with a first knob (11), and the top of the toothed plate (30) is fixedly connected with a first gear (13). The cutter head fixing piece (9) comprises a fixed rod (91), the outer side of the fixed rod (91) is provided with a tooth (92), the tooth (92) is engaged with the toothed plate (30), the connecting part of the fixed rod (91) and the first inner hexagonal bolt (14) is provided with a first reserved hole (93), the rear end of the inner side of the fixed rod (91) is provided with an arc part (94), and the front end of the inner side of the fixed rod (91) is provided with a flat part (95).

2. A tool bit holding structure for a lathe according to claim 1, characterized in that: The right end of the top of the second support (2) and the third support (29) is fixedly connected with a sleeve (3), the inner cavity of the sleeve (3) is movably connected with a tooth rod (24) through a damper (25) and a spring (26), the damper (25) is located on the inner side of the spring (26), the right end of the top of the tooth rod (24) is fixedly connected with a push block (28), and the connecting part of the sleeve (3) and the push block (28) is provided with a second sliding groove (27).

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