Fixing clamp for machining parts of numerical control machine tool

Abstract

The utility model discloses a fixing clamp for machining parts of a numerical control machine tool, and particularly relates to the field of fixing clamps for the numerical control machine tool, the fixing clamp comprises a fixing clamp body, the fixing clamp body is sequentially provided with a lower structure and a middle structure from bottom to top, and the middle structure is located at the upper end of the lower structure and is partially communicated with the lower structure; and the upper structure is located on the upper portion of the middle structure and communicated with the middle structure, a displacement frame is arranged in the upper structure, a plurality of displacement tracks communicated with the annular track are arranged on the displacement frame, and the annular track is arranged between the displacement frame and the upper structure. According to the utility model, a plurality of structures are driven by a single driver to realize linkage, the linkage degree among the structures is high, the consumption of work resources is low, the disadvantage that each device needs an independent driving structure to drive to realize the same work is avoided, and the device has the advantages of high efficiency and low energy consumption.

Description

Technical Field

[0001] The utility model relates to the technical field of fixing fixtures for CNC machine tool processing, and more specifically, to a fixing fixture for CNC machine tool parts processing. Background Art

[0002] CNC machine tool is the abbreviation of digital control machine tool, which is an automated machine tool equipped with a program control system. When processing parts on CNC machine tools, the workpiece or raw material needs to be clamped by a fixed fixture to avoid displacement of the workpiece or raw material during processing on the CNC machine tool, resulting in workmanship deviation.

[0003] After searching, the existing patent CN 204524932 U discloses a new type of CNC machine tool fixing fixture, which mainly includes a disc, and is characterized in that: a plurality of fixed baffles are provided on the edge of the disc, a hydraulic cylinder is provided on the fixed baffle, a fixed disc is provided at the center of the disc, a cross hole is provided on the fixed disc, a bolt is provided in the cross hole, the bolt is connected to the clamping plate, and the hydraulic rod on the hydraulic cylinder is pressed against the clamping plate.

[0004] The operation of the existing clamps is relatively complicated during work, so a large amount of resources will be consumed during work; at the same time, the above-cited patent documents do not propose relevant solutions to solve the problems of low clamping efficiency and serious resource consumption in the use of the fixed clamps for CNC machine tools in the prior art;

[0005] Therefore, in view of the above problems, a fixing fixture for machining parts of CNC machine tools is proposed. Utility Model Content

[0006] In order to overcome the above-mentioned defects of the prior art, an embodiment of the utility model provides a fixing fixture for machining parts of a CNC machine tool to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fixing fixture for machining parts of CNC machine tools, comprising a fixing fixture body, wherein the fixing fixture body is provided with a lower structure, a middle structure located at the upper end of the lower structure and partially connected to the lower structure, and an upper structure located at the upper part of the middle structure and connected to the middle structure in sequence from bottom to top; a displacement frame is provided in the upper structure, and a plurality of displacement tracks connected to the annular track are provided on the displacement frame; an annular track is provided between the displacement frame and the upper structure, and the surface of the annular track is slidably connected to A first clamp and a second clamp are vertically coupled to a "T"-shaped connecting column at the bottom end of the first clamp, and coupled to an "L"-shaped connecting column at the bottom end of the second clamp. A first gear bar is arranged at the bottom end of the "T"-shaped connecting column, and a second gear bar is arranged at the bottom end of the "L"-shaped connecting column. The first gear bar and the second gear bar are adjustable in bidirectional driving through a driving structure. When the driving structure rotates, the moving directions of the first gear bar and the second gear bar are opposite. The driving structure is mounted on a gear-shaped turntable, and the bottom end of the gear-shaped turntable is rotatably mounted in the lower structure.

[0008] Preferably, the driving structure includes a driving motor, which is mounted on the surface of the gear-shaped turntable, and is drivingly connected to the output end of the driving motor and the driving gear structure. The surface of the driving gear structure has teeth, and the upper end face of the driving gear structure is meshed with the teeth located on the surface of the first gear bar; the lower end face of the driving gear structure is meshed with the teeth located on the surface of the second gear bar. The driving motor drives the upper end face of the driving gear to mesh with the first gear bar, and at the same time drives the lower end face of the driving gear to mesh with the second gear bar. The first gear bar and the second gear bar cause the first clamp and the second clamp to be displaced, and the workpiece is clamped.

[0009] Preferably, the driving gear structure and the first gear bar are in contact with one end close to the "L"-shaped connecting column, and the driving gear structure and the second gear bar are in contact with one end close to the "T"-shaped connecting column. When the driving gear drives the first gear bar and the second gear bar to fit together, the end of the first gear bar close to the "L"-shaped connecting column does not contact the surface of the "L"-shaped connecting column, and the first gear bar and the second gear bar are separated by setting connecting columns with different structures.

[0010] Preferably, the outer wall of the gear-shaped turntable is provided with teeth, and a telescopic column is provided on the outer side of the gear-shaped turntable and on the inner side wall of the lower structure, and a driving gear structure is provided at the front end of the telescopic column. After the driving gear structure is driven by the telescopic column to contact the gear-shaped turntable, it can engage with the gear-shaped turntable and realize rotation. The controllable rotation of the device is realized through the telescopic performance of the telescopic column, with high rotation efficiency and low resource consumption.

[0011] Preferably, the driving gear structure includes a second driving motor, and the output end of the second driving motor is drivingly connected to the driving gear, the driving teeth are engaged with the outer wall of the gear-shaped turntable, and when the telescopic column is in a fully retracted state, the front end of the driving gear structure and the outer wall of the gear-shaped turntable are not in contact, and the gear-shaped turntable is electrically driven by the driving motor and the gear structure, thereby reducing the input of human resources and improving the workmanship stability performance of the device.

[0012] Preferably, the displacement track is annular or rectangular, and the front end of the displacement track is connected to the outer side of the annular track. The first clamp and the second clamp located in the annular track can enter the displacement track corresponding to their current positions. After the clamp enters the displacement track through the annular track, no displacement can occur in the displacement track, thereby improving the stability of the device after clamping.

[0013] Preferably, the number of the displacement tracks is not less than four, and the width of each of the displacement tracks should be at least sufficient to accommodate the passage of the first clamp or the second clamp; the displacement tracks are not connected to each other, and by setting up multiple displacement tracks, the user can select the clamping position according to the specific situation of the workpiece to be clamped, thereby improving the adaptability and applicability of the device.

[0014] Preferably, the first clamp and the second clamp are distributed correspondingly, and the first clamp and the second clamp have various specifications compatible with the workpiece to be clamped. By setting the clamps distributed correspondingly, stable clamping can be achieved, avoiding the problem of unstable clamping caused by clamping on the same side of the device.

[0015] Technical effects and advantages of the utility model:

[0016] 1. Compared with the prior art, this type of fixed fixture for machining parts of CNC machine tools realizes the position adjustment of the fixture by setting a circular track. The position adjustment of the fixture is realized by the telescopic column located in the lower wall structure engaging the gear-shaped turntable. When the device needs to adjust the position, the device is extended to drive the driving gear structure and the gear-shaped turntable to engage and generate rotation. When the device does not need to adjust the position, the device is reset, and the driving gear structure and the gear-shaped turntable are separated. The adjustment efficiency is high. At the same time, the user can also adjust the fixture manually, with a high degree of linkage and low resource loss.

[0017] 2. Compared with the prior art, this type of fixed fixture for processing CNC machine tool parts drives the first fixture and the second fixture to achieve displacement in the displacement track by setting the first gear bar and the second gear bar, thereby clamping the workpiece, improving the workmanship efficiency of the device and avoiding the problem of resource waste caused by the need for the device in the prior art to drive the fixtures separately through multiple driving structures.

[0018] 3. Compared with the prior art, this type of CNC machine tool parts processing fixed fixture structure has a high degree of linkage between the structures, low consumption of workmanship resources, avoids the disadvantage that each device needs a separate drive structure to achieve the same workmanship, and has the advantages of high efficiency and low energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model.

[0020] Figure 2 This is a schematic diagram of the appearance structure of the utility model.

[0021] Figure 3 For this utility model Figure 1 Schematic diagram of the enlarged structure of part A in FIG.

[0022] Figure 4 It is a structural schematic diagram of the utility model.

[0023] The accompanying drawings are marked as follows: 1. fixed fixture body; 2. bottom plate; 3. lower structure; 31. gear-shaped turntable; 32. mounting column; 33. bearing; 34. telescopic column; 35. driving gear structure; 4. middle structure; 5. upper structure; 6. annular track; 7. displacement frame; 8. displacement track; 9. first fixture; 10. second fixture; 11. "T"-shaped connecting column; 12. "L"-shaped connecting column; 13. first gear bar; 14. second gear bar; 15. driving motor; 16. active gear structure. DETAILED DESCRIPTION

[0024] 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.

[0025] As attached Figure 1-Figure 3The fixing fixture for machining parts of a numerically controlled machine tool shown in the figure comprises a fixing fixture body 1, which sequentially covers, from bottom to top, a bottom plate 2 for connecting the numerically controlled machine tool, a lower structure 3 located on the upper surface of the bottom plate 2 and used to install a driving structure, a middle structure 4 located on the upper end of the lower structure 3, and an upper structure 5 located at the uppermost end of the device and realizing clamping work.

[0026] Among them: a hole is arranged on the surface of the upper structure 5, and the hole is arranged on the surface of the upper structure 5 and penetrates the interior of the upper structure 5, a displacement frame 7 is arranged in the upper structure 5, and an annular track 6 is installed between the upper structure 5 and the displacement frame 7, and a first clamp 9 and a second clamp 10 are slidably connected to the upper end surface of the annular track 6. In order to improve the stability of the clamp for the workpiece, the first clamp 9 and the second clamp 10 are arranged relatively.

[0027] A plurality of displacement tracks 8 are radially provided on the surface of the displacement frame 7, and the front end of the displacement track 8 is in contact with the annular track 6. The first clamp 9 and the second clamp 10 can enter into the displacement track 8 through the annular track 6 at the position where the annular track 6 and the displacement track 8 are in contact, and slide in the displacement tracks 8 respectively entered therein.

[0028] In the middle structure 4, the bottom end of the first clamp 9 is coupled with the "T"-shaped connecting column 11, and the bottom end of the second clamp 10 is coupled with the "L"-shaped connecting column 12. The first gear bar 13 is vertically connected to the bottom end of the "T"-shaped connecting column 11, and is horizontally connected to the second gear bar 14 on an end face of the "L"-shaped connecting column 12 close to the first clamp 9; the first gear bar 13 is provided with first teeth on the surface, and the first teeth on the surface of the first gear bar 13 face the direction of the second gear bar 14; the second teeth are provided on the surface of the second gear bar 14, and the second teeth on the surface of the second gear bar 14 face the direction of the first gear bar 13.

[0029] There is a space between the first gear bar 13 and the second gear bar 14. A driving gear structure 16 is installed between the first gear bar 13 and the second gear bar 14. The surface of the driving gear structure 16 is provided with meshing teeth. The first gear bar 13 meshes with the upper end surface of the meshing teeth through the first teeth; the second gear bar 14 meshes with the lower section of the meshing teeth through the second teeth. The driving gear structure 16 is connected to the output end of the driving motor 15, and the driving gear structure 16 is driven by the output end of the driving motor 15 to realize rotation.

[0030] A gear-shaped turntable 31 is arranged in the lower structure 3 and located on the bottom end surface of the lower structure 3. A bearing 33 is arranged on the bottom end surface of the lower structure 3. A mounting column 32 is arranged at the bottom end of the gear-shaped turntable 31. The mounting column 32 is fixed in the bearing 33. After the gear-shaped turntable 31 is driven, the mounting column 32 rotates in the bearing 33. Teeth are arranged on the surface of the gear-shaped turntable 31. A telescopic column 34 is arranged on the inner side wall of the lower structure 3 corresponding to the outer wall of the gear-shaped turntable 31. A driving gear structure 35 and the outer wall of the gear-shaped turntable 31 are used to realize telescopic engagement at the output end of the telescopic column 34.

[0031] The working process of the utility model is as follows:

[0032] When in use, the user now connects the device to an external control power supply. After the device is powered on, the user presses the displacement switch. After the displacement switch is turned on, the PLC receives an electrical signal and controls the telescopic column 34 to extend toward the gear-shaped turntable 31 until the telescopic column 34 is controlled to drive the driving gear structure 35 to contact the teeth on the surface of the gear-shaped turntable 31, and the driving gear structure 35 starts to work. The driving gear structure 35 includes a second driving motor and a driving gear located at the output end of the second driving motor. The driving gear rotates under the drive of the second driving motor. The rotating driving gear engages with the outer surface of the gear-shaped turntable 31, driving the mounting column 32 at the bottom end of the gear-shaped turntable 31 to rotate in the bearing 33. The gear-shaped turntable 31 rotates while driving the driving motor 15 to rotate. The driving motor 15 drives the first clamp 9 and the second clamp 10 to slide in the annular track 6 through the engaged first gear bar 13 and the second gear bar 14.

[0033] After the first clamp 9 and the second clamp 10 are rotated to a suitable position for clamping, the user presses the displacement switch again, the telescopic column 34 retracts, and drives the driving gear structure 35 away from the gear-shaped turntable 31, and the gear-shaped turntable 31 stops rotating; at this time, the user presses the clamping switch, and the output end of the driving motor 15 drives the active gear structure 16 to rotate, and the upper end of the active gear structure 16 is engaged with the end of the first gear bar 13 close to the "L"-shaped connecting column 12, and one end of the active gear structure 16 is engaged with the end of the second gear bar 14 close to the "T"-shaped connecting column 11. After the active gear structure 16 rotates forward, the first gear bar 13 and the second gear bar 14 move relative to each other and gradually approach each other, driving the first clamp 9 and the second clamp 10 to move in the displacement track 8 at their corresponding positions, until the workpiece is clamped between the first clamp 9 and the second clamp 10, and the pressure sensor located on the surface of the first clamp 9 and the pressure sensor on the surface of the second clamp 10 detects the pressure generation, and sends an electrical signal to the PLC to control the driving motor 15 to stop rotating.

[0034] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A fixing fixture for machining parts of numerically controlled machine tools, comprising a fixing fixture body (1), wherein the fixing fixture body (1) is provided with a lower structure (3), a middle structure (4) located at the upper end of the lower structure (3) and partially connected to the lower structure (3), and an upper structure (5) located at the upper part of the middle structure (4) and connected to the middle structure (4) in sequence from bottom to top, characterized in that; A displacement frame (7) is arranged in the upper structure (5), an annular track (6) is arranged between the upper structure (5) and the displacement frame (7), a plurality of displacement tracks (8) connected to the annular track (6) are arranged on the displacement frame (7), an annular track (6) is arranged between the displacement frame (7) and the upper structure (5), a first clamp (9) and a second clamp (10) are slidably connected to the surface of the annular track (6), the bottom end of the first clamp (9) is vertically coupled to a "T"-shaped connecting column (11), and the bottom end of the second clamp (10) and The first gear bar (13) and the second gear bar (14) are coupled with each other through an "L"-shaped connecting column (12); a first gear bar (13) is arranged at the bottom end of the "T"-shaped connecting column (11); a second gear bar (14) is arranged at the bottom end of the "L"-shaped connecting column (12); the first gear bar (13) and the second gear bar (14) are adjustable in bidirectional driving through a driving structure; when the driving structure rotates, the first gear bar (13) and the second gear bar (14) move in opposite directions; the driving structure is mounted on a gear-shaped rotating disk (31); and the bottom end of the gear-shaped rotating disk (31) is rotatably mounted in the lower structure (3).

2. A fixing fixture for machining parts of CNC machine tools according to claim 1, characterized in that: The driving structure comprises a driving motor (15), the driving motor (15) being mounted on the surface of the gear-shaped rotating disk (31), and the output end of the driving motor (15) being drivingly connected to a driving gear structure (16), the surface of the driving gear structure (16) having teeth, and the upper end surface of the driving gear structure (16) meshing with the teeth on the surface of the first gear bar (13); The lower end surface of the driving gear structure (16) meshes with the teeth located on the surface of the second gear bar (14).

3. A fixing fixture for machining parts of CNC machine tools according to claim 2, characterized in that: The driving gear structure (16) and the first gear bar (13) are in contact with one end close to the "L"-shaped connecting column (12), and the driving gear structure (16) and the second gear bar (14) are in contact with one end close to the "T"-shaped connecting column (11). When the driving gear structure (16) drives the first gear bar (13) and the second gear bar (14) to fit together, the end of the first gear bar (13) close to the "L"-shaped connecting column (12) does not contact the surface of the "L"-shaped connecting column (12).

4. The fixing fixture for machining parts of CNC machine tools according to claim 1, characterized in that: The outer wall of the gear-shaped turntable (31) is provided with teeth, a telescopic column (34) is provided on the outer side of the gear-shaped turntable (31) and on the inner side wall of the lower structure (3), and a driving gear structure (35) is provided at the front end of the telescopic column (34). After the driving gear structure (35) is driven by the telescopic column (34) to contact the gear-shaped turntable (31), it can engage with the gear-shaped turntable (31) and realize rotation.

5. The fixing fixture for machining parts of CNC machine tools according to claim 4, characterized in that: The driving gear structure (35) includes a second driving motor, and the output end of the second driving motor is drivingly connected to the driving gear, and the driving gear is engaged with the outer wall of the gear-shaped rotating disk (31). When the telescopic column (34) is in a fully retracted state, the front end of the driving gear structure (35) does not contact the outer wall of the gear-shaped rotating disk (31).

6. The fixing fixture for machining parts of CNC machine tools according to claim 1, characterized in that: The displacement track (8) is annular or rectangular, the front end of the displacement track (8) is connected to the outer side of the annular track (6), and the first clamp (9) and the second clamp (10) located in the annular track (6) can enter the displacement track (8) corresponding to their current positions.

7. A fixing fixture for machining parts of CNC machine tools according to claim 6, characterized in that: The number of the displacement tracks (8) is not less than four, and the width of each displacement track (8) should be at least sufficient to accommodate the first clamp (9) or the second clamp (10) passing through; the displacement tracks (8) are not connected to each other.

8. The fixing fixture for machining parts of CNC machine tools according to claim 1, characterized in that: The first clamp (9) and the second clamp (10) are distributed correspondingly, and the first clamp (9) and the second clamp (10) have a variety of specifications that are compatible with the workpiece to be clamped.

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