Positioning clamp for machining of numerical control machine tool

Abstract

The utility model discloses a positioning fixture for machining of a numerical control machine tool, which comprises a positioning base, four groups of fixing plates are arranged at the bottom end of the positioning base, and a first workpiece positioning and clamping part with a fixed position and a second workpiece positioning and clamping part with an automatically adjustable position are arranged on the positioning base. A sliding block is arranged at the bottom end of the second workpiece positioning and clamping part, an adjusting lead screw is connected to the sliding block in a matched mode, and a driving motor is connected to the end of the adjusting lead screw. The first workpiece positioning and clamping part is detachably connected to the upper portion of the side end of the positioning base through a first clamping device, and the second workpiece positioning and clamping part is detachably connected to the sliding block through a second clamping device. Due to the fact that the detachable first workpiece positioning and clamping part and the detachable second workpiece positioning and clamping part are additionally arranged on the positioning base, a worker can select the corresponding first workpiece positioning and clamping part and the corresponding second workpiece positioning and clamping part according to the shapes of clamped workpieces, and the first workpiece positioning and clamping part and the second workpiece positioning and clamping part are used for clamping the workpieces of different shapes.

Description

TECHNICAL FIELD

[0001] The utility model relates to positioning fixture technical field for numerical control lathe, specifically point to a kind of positioning fixture for numerical control machine tool machining. BACKGROUND

[0002] Numerical control lathe is one of more widely used numerical control machine tools, it is mainly used for the inner and outer cylindrical surface of shaft parts or disc parts, inner and outer conical surface of arbitrary taper angle, complex rotary inner and outer curved surface and cylindrical, conical thread etc. cutting processing, and can carry out cutting groove, drilling, reaming, reaming and boring etc.

[0003] Now most numerical control lathe machining fixture structure is simple, only applicable to single specification workpiece, fixture does not have multidirectional adjusting function, different shapes cannot be quickly clamped and positioned, and the versatility cannot be improved.

[0004] Therefore, a positioning fixture for numerical control machine tool machining becomes a problem to be solved in the whole society. INVENTION CONTENTS

[0005] To solve the above technical problems, the technical scheme provided by the utility model is as follows: a positioning fixture for numerical control machine tool machining, including positioning base, the bottom end of the positioning base is provided with four groups of mounting plates, the positioning base is provided with position-fixed first workpiece positioning and clamping part and position-adjustable second workpiece positioning and clamping part, a sliding block is arranged at the bottom end of the second workpiece positioning and clamping part, an adjusting screw is connected with the sliding block in a matched mode, and a driving motor is connected with the end of the adjusting screw.

[0006] The first workpiece positioning and clamping part is detachably connected above the side end of the positioning base through the first clamping device, and the second workpiece positioning and clamping part is detachably connected on the sliding block through the second clamping device.

[0007] Further, two guide shafts are arranged on the positioning base, and the two ends of the sliding block are provided with circular holes matched with the guide shafts.

[0008] Further, the first clamping device and the second clamping device are the same in structure, the first clamping device includes a first clamping part and a second clamping part, the first clamping part includes a shell body, a first spring, a button and a second spring, the two sides of the shell body are provided with holes, the button extends out of the shell body from the hole, the button is provided with a guide column, the guide column extends into the first spring, the button side surface extends upward and is provided with a clamping protrusion, and the bottom end of the second clamping part is provided with a clamping groove matched with the clamping protrusion.

[0009] Further, the inside of the outer shell is provided with a fixed plate and a fixed column, the inner side end of the first spring is fixedly connected on the fixed plate, the second spring is sleeved on the fixed column, and when the first clamping part and the second clamping part are clamped and connected, the second spring is in a compressed state.

[0010] Compared with the prior art, the utility model has the advantages of:

[0011] The utility model discloses a positioning clamp for numerical control machine tool machining, which comprises a positioning base, a first workpiece positioning and clamping part and a second workpiece positioning and clamping part which are arranged on the positioning base, and a first clamping device and a second clamping device which are arranged on the first workpiece positioning and clamping part and the second workpiece positioning and clamping part respectively.

[0012] The utility model discloses a positioning clamp for numerical control machine tool machining, which comprises a positioning base, a first workpiece positioning and clamping part and a second workpiece positioning and clamping part which are arranged on the positioning base, and a first clamping device and a second clamping device which are arranged on the first workpiece positioning and clamping part and the second workpiece positioning and clamping part respectively. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the positioning clamp for numerical control machine tool machining of the utility model one embodiment;

[0014] Figure 2 It is a structural schematic diagram of the positioning clamp for numerical control machine tool machining of the utility model two embodiment;

[0015] Figure 3 It is a partial schematic diagram of the positioning clamp for numerical control machine tool machining of the utility model two embodiment;

[0016] Figure 4 It is a partial schematic diagram of the cooperation of the first workpiece positioning and clamping part and the first clamping device;

[0017] Figure 5 It is an internal schematic diagram of the first clamping part;

[0018] Figure 6 It is a structural schematic diagram of the sliding block;

[0019] Figure 7 It is a structural schematic diagram of the outer shell.

[0020] Wherein, 1, positioning base, 2, mounting plate, 3, first workpiece positioning and clamping part, 4, second workpiece positioning and clamping part, 5, sliding block, 6, adjusting screw, 7, drive motor, 8, guide shaft, 9, circular hole, 10, first clamping part, 11, second clamping part, 12, outer shell, 13, first spring, 14, button, 15, second spring, 16, hole, 17, clamping protrusion, 18, clamping groove, 19, fixed plate, 20, fixed column, 21, support plate, 22, rectangular hole, 23, fixed hole, 24, rectangular hole. DETAILED DESCRIPTION

[0021] The utility model makes further detailed description in combination with the drawings.

[0022] The utility model makes further detailed description in combination with the drawings.

[0023] The utility model provides a positioning fixture for numerical control machine tool machining, including positioning base 1, positioning base 1's bottom end is provided with four sets of mounting plate 2, be provided with the first workpiece positioning and clamping part 3 of fixed position and the second workpiece positioning and clamping part 4 of position automatically adjustable on positioning base 1, be provided with sliding block 5 at the bottom of second workpiece positioning and clamping part 4, and the adjusting screw 6 of cooperation and connection is had on sliding block 5, and the end of adjusting screw 6 is connected with drive motor 7;

[0024] First workpiece positioning and clamping part 3 is detachably connected on the side end of positioning base 1 by first clamping device, and second workpiece positioning and clamping part 4 is detachably connected on sliding block 5 by second clamping device.

[0025] Embodiment one:

[0026] The utility model in usage, with screw passes through the fixed hole 23 on mounting plate 2 and fixes the above-mentioned positioning fixture on workbench, places workpiece between first workpiece positioning and clamping part 3 and second workpiece positioning and clamping part 4, starts drive motor 7, and drive motor 7 works and drives adjusting screw 6 to rotate, to make the sliding block 5 on adjusting screw 6 slide with second workpiece positioning and clamping part 4, make second workpiece positioning and clamping part 4 approach first workpiece positioning and clamping part 3, to realize the clamping of workpiece. Through the above-mentioned operation can realize the automatic clamping of workpiece, and staff need not manually hold again.

[0027] Because first workpiece positioning and clamping part 3, second workpiece positioning and clamping part 4 are all detachably connected, staff can select corresponding workpiece positioning and clamping part according to the shape of workpiece, to make the utility model satisfy the workpiece clamping demand of different shapes.

[0028] Two groups of guide shafts 8 are arranged on the positioning base 1, and the two ends of the sliding block 5 are provided with circular holes 9 matched with the guide shafts 8. During the sliding of the sliding block 5 along the adjusting screw rod 6, the two ends of the sliding block 5 start to slide along the guide shafts 8, thereby improving the stability of the sliding block 5 during the movement.

[0029] Embodiment two:

[0030] The first clamping device and the second clamping device are identical in structure. The first clamping device comprises a first clamping component 10 and a second clamping component 11. The first clamping component 10 comprises an outer shell 12, a first spring 13, a button 14 and a second spring 15. Two sides of the outer shell 12 are provided with out-holes 16. The outer side end of the button 14 extends out of the outer shell 12 from the out-holes 16. The button 14 is provided with a guide column 13 which extends into the interior of the first spring 13. The side of the button 14 extends upwardly with a clamping protrusion 17. The bottom end of the second clamping component 11 is provided with a clamping groove 18 matched with the clamping protrusion 17.

[0031] The top end of the outer shell 12 is provided with a rectangular hole 24. The interior of the outer shell 12 is provided with a fixed plate 19 and a fixed column 20. The inner side end of the first spring 13 is fixedly connected to the fixed plate 19. The second spring 15 is sleeved on the fixed column 20. When the first clamping component 10 and the second clamping component 11 are clamped and connected, the second spring 15 is in a compressed state.

[0032] In this embodiment, one-key disassembly of the first workpiece positioning and clamping part 3 and the second workpiece positioning and clamping part 4 can be realized. The specific disassembly principle is as follows:

[0033] The button 14 is pressed inwardly by hand. After being pressed, the button 14 moves inwardly and simultaneously extrudes the first spring 13. At the same time, the button 14 drives the clamping protrusion 17 to move inwardly, so that the clamping protrusion 17 on the button 14 is separated from the restraint of the clamping groove 18 at the bottom end of the second clamping component 11. At this time, the second spring 15 in the compressed state generates elastic force to the second clamping component 11, so that the first clamping component 10 and the second clamping component 11 are quickly separated.

[0034] When the first workpiece positioning and clamping part 3 and the second workpiece positioning and clamping part 4 are installed, the clamping groove 18 at the bottom end of the first workpiece positioning and clamping part 3 and the second workpiece positioning and clamping part 4 is directly pressed into the outer shell 12, so that the clamping protrusion 17 on the button 14 is clamped and connected together with the clamping groove 18 at the bottom end of the second clamping component 11. The operation is simple.

[0035] In order to facilitate the clamping and fixing of the workpiece with the outer side wall being a plane structure, the first workpiece positioning and clamping part 3 and the second workpiece positioning and clamping part 4 are the same in structure, and the first workpiece positioning and clamping part 3 is provided in a flat plate structure.

[0036] In order to facilitate the clamping and fixing of the workpiece with the outer side wall being a plane structure, the first workpiece positioning and clamping part 3 and the second workpiece positioning and clamping part 4 are the same in structure, and the first workpiece positioning and clamping part 3 is provided in a flat plate structure.

[0037] As a further elaboration of the utility model, the support base 1 is fixedly installed with an integrally formed support plate 21 between the inner side walls, and the sliding block 5 is provided with a rectangular hole 22 matched with the support plate 21.

[0038] In order to facilitate the installation and fixing of the positioning clamp, a plurality of circular fixing holes 23 are arranged on the mounting plate 2, and the positioning clamp is fixed by screwing through the fixing holes 23.

[0039] The utility model and its implementation mode have been described above, and this description is not restrictive, and the drawings shown are only one of the implementation modes of the utility model, and the actual structure is not limited thereto. In summary, if a person skilled in the art is inspired thereby, without departing from the creative purpose of the utility model, without creative design, similar structure modes and embodiments of the technical scheme should belong to the protection scope of the utility model.

Claims

1. A positioning fixture for machining on a CNC machine tool, comprising a positioning base (1), wherein the bottom end of the positioning base (1) is provided with four sets of mounting plates (2), characterized in that: The positioning base (1) is provided with a first workpiece positioning clamping part (3) with a fixed position and a second workpiece positioning clamping part (4) with an automatically adjustable position. A sliding block (5) is provided at the bottom end of the second workpiece positioning clamping part (4). An adjusting screw (6) is connected to the sliding block (5). A drive motor (7) is connected to the end of the adjusting screw (6). The first workpiece positioning clamping part (3) is detachably connected to the upper side of the positioning base (1) via the first engaging device, and the second workpiece positioning clamping part (4) is detachably connected to the sliding block (5) via the second engaging device.

2. The positioning fixture for CNC machine tool machining according to claim 1, characterized in that: The positioning base (1) is provided with two sets of guide shafts (8), and the two ends of the sliding block (5) are provided with circular holes (9) that cooperate with the guide shafts (8).

3. A positioning fixture for CNC machine tool machining according to claim 1, characterized in that: The first and second engaging devices have the same structure. The first engaging device includes a first engaging component (10) and a second engaging component (11). The first engaging component (10) includes a housing (12), a first spring (13), a button (14), and a second spring (15). The housing (12) has outlet holes (16) on both sides. The outer end of the button (14) extends out of the housing (12) from the outlet holes (16). The button (14) is provided with a guide post (13). The guide post (13) extends into the interior of the first spring (13). The side of the button (14) has an engaging protrusion (17) extending upward. The bottom end of the second engaging component (11) is provided with an engaging groove (18) that cooperates with the engaging protrusion (17).

4. A positioning fixture for CNC machine tool machining according to claim 3, characterized in that: The top of the outer shell (12) is provided with a rectangular hole (24). The interior of the outer shell (12) is provided with a fixing plate (19) and a fixing post (20). The inner end of the first spring (13) is fixedly connected to the fixing plate (19). The second spring (15) is sleeved on the fixing post (20). When the first engaging component (10) and the second engaging component (11) are engaged, the second spring (15) is in a compressed state.

5. A positioning fixture for CNC machine tool machining according to claim 4, characterized in that: The first workpiece positioning clamping part (3) and the second workpiece positioning clamping part (4) have the same structure, and the first workpiece positioning clamping part (3) is a flat plate structure.

6. A positioning fixture for CNC machine tool machining according to claim 4, characterized in that: The first workpiece positioning clamping part (3) and the second workpiece positioning clamping part (4) have the same structure, and the inner wall of the first workpiece positioning clamping part (3) is set with an arc-shaped structure.

7. A positioning fixture for CNC machine tool machining according to claim 1, characterized in that: An integrally formed support plate (21) is fixedly installed between the inner walls of the support base (1), and a rectangular hole (22) that mates with the support plate (21) is provided on the sliding block (5).

8. A positioning fixture for CNC machine tool machining according to claim 1, characterized in that: The mounting plate (2) is provided with multiple circular fixing holes (23), and the positioning fixture is fixed by screws through the fixing holes (23).

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