Accurate positioning clamp of numerical control machine tool

Abstract

The utility model discloses a numerical control machine tool accurate positioning clamp, which belongs to the technical field of numerical control machine tool clamps, and comprises a machine tool, the top of the machine tool is fixedly connected with a protective frame, an adjusting frame is arranged in the protective frame, and the surface of the adjusting frame is fixedly connected with three adjusting rods. A positioning mechanism and an auxiliary mechanism are arranged on the front side of the adjusting rod, an observation window is embedded in the right side of the machine tool, parts are arranged in the machine tool, and a rotating door is arranged on the right side of the machine tool. The positioning mechanism comprises a fixing plate, two positioning pins, a positioning sleeve, a supporting column and a rotating block, the interior of the fixing plate is fixedly connected with the surface of the supporting column, and the problems that most of the prior art can only position and clamp workpieces of specific shapes and sizes, adaptability to workpieces of different specifications is insufficient, universality is poor, operation is tedious, and the working efficiency is high are solved. The time consumed for clamping and disassembling the workpiece is long, and the production efficiency is influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of CNC machine tool fixtures, in particular to a precise positioning fixture for CNC machine tools. Background Art

[0002] The CNC machine tool precision positioning fixture is an important device used to accurately fix and position the workpiece during the CNC machine tool processing process.

[0003] In the prior art, a CNC machine tool needs to use a positioning fixture to fix the object before processing it. However, the existing positioning fixture is usually integrated and inconvenient to disassemble. Moreover, when a small component of the positioning fixture is damaged, the large component connected to the small component needs to be replaced together, resulting in a waste of resources.

[0004] The existing patent (publication number: CN217991706U) discloses a positioning fixture for CNC machine tools, including: a mounting plate, the upper end of the mounting plate is slidably connected to a movable plate, one end of the movable plate is fixedly connected to a clamping plate 1; a support plate, fixedly connected to the side wall on the other side of the upper end of the mounting plate; and a clamping plate 2, which is clamped to the upper end of the support plate. When the positioning fixture is damaged, the clamping plate 1 can be replaced by unscrewing the bolts and removing the fixing block, and the clamping plate 2 can be lifted up and separated from the support plate to replace the clamping plate 2.

[0005] In response to the above problems, existing patents have provided solutions. However, the above solutions have certain limitations during use. Most of them can only position and clamp workpieces of specific shapes and sizes. They are not adaptable to workpieces of different specifications, have poor versatility, are cumbersome to operate, and it takes a long time to clamp and disassemble the workpiece, which affects production efficiency.

[0006] Therefore, a precise positioning fixture for CNC machine tools is proposed. Utility Model Content

[0007] The purpose of the utility model is to provide a precise positioning fixture for CNC machine tools, which can solve the problems that most existing fixtures can only position and clamp workpieces of specific shapes and sizes, have insufficient adaptability to workpieces of different specifications, have poor versatility, are cumbersome to operate, and take a long time to clamp and disassemble workpieces, thereby affecting production efficiency.

[0008] To achieve the above-mentioned object, the present invention provides the following technical solution: a precise positioning fixture for a CNC machine tool, comprising a machine tool, a protective frame fixedly connected to the top of the machine tool, characterized in that an adjustment frame is provided inside the protective frame, three adjustment rods are fixedly connected to the surface of the adjustment frame, a positioning mechanism and an auxiliary mechanism are provided on the front side of the adjustment rods, an observation window is inlaid on the right side of the machine tool, parts are provided inside the machine tool, and a rotating door is provided on the right side of the machine tool;

[0009] The positioning mechanism includes a fixed plate, two positioning pins, a positioning sleeve, a support column and a rotating block. The interior of the fixed plate is fixedly connected to the surface of the support column, the front side of the positioning pin passes through the fixed plate and extends to the interior of the rotating block, the surface of the positioning pin is threadedly connected to the interior of the rotating block, the rear side of the positioning sleeve is fixedly connected to the front side of the rotating block, and the front side of the support column extends to the interior of the rotating block and contacts the interior of the rotating block.

[0010] Preferably, the surface of the positioning sleeve is fixedly connected to a fixing frame, and the fixing frame is provided with four auxiliary plates. Two limiting pads are fixedly connected to opposite sides of the four auxiliary plates, and the side of the limiting pad close to the surface of the part is in close contact with the surface of the part.

[0011] Preferably, eight limit springs are fixedly connected to the interior of the fixing frame, and the limit springs are fixedly connected to the auxiliary plate on a side close to the auxiliary plate.

[0012] Preferably, a positioning ring is fixedly connected to the front side of the positioning sleeve, and the interior of the positioning ring contacts the surface of the part.

[0013] Preferably, a bearing is rotatably connected to the surface of the support column, and the surface of the bearing is fixedly connected to the interior of the rotating block.

[0014] Preferably, two handles are provided on the rear side of the fixing plate, and the front sides of the handles are fixedly connected to the rear sides of the positioning pins.

[0015] Preferably, a motor is fixed to the rear side of the protective frame, and the front side of the motor output shaft passes through the protective frame and is fixedly connected to the rear side of the adjustment frame.

[0016] Preferably, two hinges are provided on the rear side of the rotating door, the connection between the rotating door and the machine tool is rotatably connected via the hinges, and a handle is fixedly connected to the right side of the rotating door.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. The present application allows the rear side of the part to extend into the interior of the positioning sleeve, so that the positioning sleeve is rotated through the support column, so that the interior of the positioning sleeve is tightly connected to the surface of the part for fixation, and the rotating block is used to position the part. This facilitates the positioning pin to move from the interior of the fixed plate to the interior of the rotating block, thereby facilitating the fixing of the positioning sleeve by the rotating block, thereby avoiding the need to disassemble and replace the positioning sleeve, thereby improving production efficiency;

[0019] 2. This application enables the part to be moved to the inside of the positioning sleeve through the fixing frame, and the auxiliary plate is driven to move under the expansion and contraction of the limit spring, so that the auxiliary plate drives the limit pad to be in close contact with the surface of the part, thereby facilitating the positioning ring to limit the movement of the part. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is the overall structure diagram of the CNC machine tool precision positioning fixture of the present utility model;

[0021] Figure 2 This is a schematic diagram of the three-dimensional structure inside the protective frame of the present invention;

[0022] Figure 3 This is a schematic diagram of the three-dimensional connection between the adjustment frame and the adjustment rod in the utility model;

[0023] Figure 4 This is a three-dimensional connection diagram of the auxiliary mechanism in the utility model;

[0024] Figure 5 It is a three-dimensional connection diagram of the positioning mechanism in the utility model.

[0025] In the figure, 1. machine tool; 2. handle; 3. rotating door; 4. hinge; 5. observation window; 6. protective frame; 7. parts; 8. positioning mechanism; 801. fixed plate; 802. positioning pin; 803. positioning sleeve; 804. support column; 805. rotating block; 9. auxiliary mechanism; 901. fixed frame; 902. auxiliary plate; 903. limit spring; 904. limit pad; 905. positioning ring; 10. adjusting rod; 11. motor; 12. adjusting frame; 13. bearing; 14. handle. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] See also Figure 1-5 , this utility model provides a technical solution:

[0028] A CNC machine tool precision positioning fixture includes a machine tool 1, a protective frame 6 is fixedly connected to the top of the machine tool 1, an adjustment frame 12 is provided inside the protective frame 6, three adjustment rods 10 are fixedly connected to the surface of the adjustment frame 12, a positioning mechanism 8 and an auxiliary mechanism 9 are provided on the front side of the adjustment rods 10, an observation window 5 is embedded on the right side of the machine tool 1, a part 7 is provided inside the machine tool 1, and a rotating door 3 is provided on the right side of the machine tool 1;

[0029] The positioning mechanism 8 includes a fixed plate 801, two positioning pins 802, a positioning sleeve 803, a support column 804 and a rotating block 805. The interior of the fixed plate 801 is fixedly connected to the surface of the support column 804. The front side of the positioning pin 802 passes through the fixed plate 801 and extends to the interior of the rotating block 805. The surface of the positioning pin 802 is threadedly connected to the interior of the rotating block 805. The rear side of the positioning sleeve 803 is fixedly connected to the front side of the rotating block 805. The front side of the support column 804 extends to the interior of the rotating block 805 and contacts the interior of the rotating block 805.

[0030] In this embodiment: by moving part 7 to the interior of the machine tool 1 through the rotating door 3, it is convenient for the adjustment frame 12 to drive the adjustment rod 10 to rotate according to the model of part 7, so that the adjustment rod 10 drives the appropriate positioning sleeve 803 to move to the interior of the machine tool 1, and the rear side of the part 7 can be conveniently extended to the interior of the positioning sleeve 803, and the positioning sleeve 803 is rotated through the support column 804, so that the interior of the positioning sleeve 803 is tightly connected with the surface of the part 7 for fixation, and the rotating block 805 positions the part 7, and the positioning pin 802 can be conveniently moved from the interior of the fixed plate 801 to the interior of the rotating block 805, so that the positioning sleeve 803 can be conveniently fixed by the rotating block 805, thereby avoiding the disassembly and replacement of the positioning sleeve 803, and thus improving production efficiency.

[0031] Specifically, such as Figure 4 As shown, the surface of the positioning sleeve 803 is fixedly connected to a fixing frame 901, and the fixing frame 901 is provided with four auxiliary plates 902. Two limiting pads 904 are fixedly connected to the opposite sides of the four auxiliary plates 902, and the side of the limiting pad 904 close to the surface of the part 7 is in close contact with the surface of the part 7.

[0032] Specifically, such as Figure 3 、 Figure 4 As shown, eight limit springs 903 are fixedly connected to the interior of the fixing frame 901 , and the side of the limit spring 903 close to the auxiliary plate 902 is fixedly connected to the auxiliary plate 902 .

[0033] Specifically, such as Figure 3 、 Figure 4 As shown, a positioning ring 905 is fixedly connected to the front side of the positioning sleeve 803 , and the interior of the positioning ring 905 contacts the surface of the component 7 .

[0034] In this embodiment: by making the side of the limiting pad 904 close to the surface of the part 7 in close contact with the surface of the part 7, the limiting pad 904 can be conveniently used to assist in limiting the surface of the part 7 through the auxiliary plate 902, thereby achieving the effect of assisting in limiting the part 7.

[0035] Specifically, such as Figure 5As shown, the surface of the support column 804 is rotatably connected to the bearing 13 , and the surface of the bearing 13 is fixedly connected to the interior of the rotating block 805 .

[0036] Specifically, such as Figure 5 As shown, two handles 14 are provided on the rear side of the fixing plate 801 , and the front sides of the handles 14 are fixedly connected to the rear sides of the positioning pins 802 .

[0037] In this embodiment, by fixedly connecting the front side of the handle 14 to the rear side of the positioning pin 802, the handle 14 can conveniently drive the positioning pin 802 to move inside the fixed plate 801, thereby achieving the effect of conveniently driving the positioning pin 802 to move.

[0038] Specifically, such as Figure 3 As shown, a motor 11 is fixed to the rear side of the protective frame 6 , and the front side of the output shaft of the motor 11 passes through the protective frame 6 and is fixedly connected to the rear side of the adjustment frame 12 .

[0039] Specifically, such as Figure 1 As shown, two hinges 4 are provided on the rear side of the rotating door 3 , and the connection between the rotating door 3 and the machine tool 1 is rotatably connected via the hinges 4 . A handle 2 is fixedly connected to the right side of the rotating door 3 .

[0040] In this embodiment, by rotatably connecting the rotating door 3 and the machine tool 1 via the hinge 4, the handle 2 can be conveniently driven to rotate the rotating door 3 via the hinge 4, thereby achieving the effect of conveniently driving the rotating door 3 to rotate.

[0041] Working principle: When positioning and clamping different parts 7, part 7 is moved to the inside of the machine tool 1 through the rotating door 3, so that the adjustment frame 12 drives the adjustment rod 10 to rotate through the output shaft of the motor 11 according to the model of the part 7, so that the adjustment rod 10 drives the appropriate positioning sleeve 803 to move to the inside of the machine tool 1, so that the part 7 is conveniently moved to the inside of the positioning sleeve 803 through the fixed frame 901, and the auxiliary plate 902 is driven to move under the expansion and contraction of the limit spring 903, so that the auxiliary plate 902 drives the limit pad 904 to be in close contact with the surface of the part 7, so that the positioning ring 905 is convenient to limit the movement of the part 7, so that the rear side of the part 7 can be conveniently extended to the inside of the positioning sleeve 803, so that the positioning sleeve 803 can pass through The bearing 13 on the surface of the support column 804 rotates, so that the interior of the positioning sleeve 803 is tightly connected and fixed with the surface of the part 7, so that the rotating block 805 can position the part 7, and the handle 14 can be conveniently used to drive the positioning pin 802 to move, so that the positioning pin 802 moves from the inside of the fixed plate 801 to the inside of the rotating block 805, so that the positioning sleeve 803 can be conveniently fixed by the rotating block 805, thereby avoiding the disassembly and replacement of the positioning sleeve 803, which can improve production efficiency and solve the problem that most existing ones can only position and clamp workpieces of specific shapes and sizes, lack adaptability to workpieces of different specifications, have poor versatility, are cumbersome to operate, and take a long time to clamp and disassemble workpieces, affecting production efficiency.

[0042] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A precise positioning fixture for a numerically controlled machine tool, comprising a machine tool (1), wherein a protective frame (6) is fixedly connected to the top of the machine tool (1), and characterized in that: An adjusting frame (12) is provided inside the protective frame (6), three adjusting rods (10) are fixedly connected to the surface of the adjusting frame (12), a positioning mechanism (8) and an auxiliary mechanism (9) are provided on the front side of the adjusting rod (10), an observation window (5) is embedded on the right side of the machine tool (1), a part (7) is provided inside the machine tool (1), and a rotating door (3) is provided on the right side of the machine tool (1); The positioning mechanism (8) comprises a fixed plate (801), two positioning pins (802), a positioning sleeve (803), a support column (804) and a rotating block (805); the interior of the fixed plate (801) is fixedly connected to the surface of the support column (804); the front side of the positioning pin (802) passes through the fixed plate (801) and extends to the interior of the rotating block (805); the surface of the positioning pin (802) is threadedly connected to the interior of the rotating block (805); the rear side of the positioning sleeve (803) is fixedly connected to the front side of the rotating block (805); the front side of the support column (804) extends to the interior of the rotating block (805) and contacts the interior of the rotating block (805).

2. The CNC machine tool precision positioning fixture according to claim 1, characterized in that: The surface of the positioning sleeve (803) is fixedly connected to a fixing frame (901), and the fixing frame (901) is provided with four auxiliary plates (902). Two limiting pads (904) are fixedly connected to opposite sides of the four auxiliary plates (902), and the limiting pads (904) are in close contact with the surface of the part (7) on the side close to the surface of the part (7).

3. The CNC machine tool precision positioning fixture according to claim 2, characterized in that: Eight limit springs (903) are fixedly connected inside the fixing frame (901), and the limit springs (903) are fixedly connected to the auxiliary plate (902) on a side close to the auxiliary plate (902).

4. The CNC machine tool precision positioning fixture according to claim 1, characterized in that: A positioning ring (905) is fixedly connected to the front side of the positioning sleeve (803), and the interior of the positioning ring (905) is in contact with the surface of the component (7).

5. The CNC machine tool precision positioning fixture according to claim 1, characterized in that: The surface of the support column (804) is rotatably connected to a bearing (13), and the surface of the bearing (13) is fixedly connected to the interior of the rotating block (805).

6. The CNC machine tool precision positioning fixture according to claim 1, characterized in that: Two handles (14) are provided on the rear side of the fixing plate (801), and the front sides of the handles (14) are fixedly connected to the rear sides of the positioning pins (802).

7. The CNC machine tool precision positioning fixture according to claim 1, characterized in that: A motor (11) is fixed to the rear side of the protective frame (6), and the front side of the output shaft of the motor (11) passes through the protective frame (6) and is fixedly connected to the rear side of the adjustment frame (12).

8. The CNC machine tool precision positioning fixture according to claim 1, characterized in that: Two hinges (4) are provided on the rear side of the rotating door (3); the connection between the rotating door (3) and the machine tool (1) is rotatably connected via the hinges (4); and a handle (2) is fixedly connected to the right side of the rotating door (3).

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